1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes in sbcl-2.4.8 relative to sbcl-2.4.7:
4 * bug fix: the elftool utility finds a writeable directory in more
5 situations. (thanks to Shinmera)
6 * bug fix: SLOT-MAKUNBOUND does not attempt to dereference a PROGN variable
8 * bug fix: READ-SEQUENCE into displaced arrays with a non-zero offset now
9 writes to the right memory location.
10 * bug fix: fix some erroneous file position calculations in the editcore
11 utility (exposed by a change in the libzstd compression implementation).
12 * bug fix: do not break the build on STYLE-WARNINGs for earlier SBCL build
13 hosts. (lp#2064671, reported by Patrick Poitras)
14 * bug fix: various bug fixes for ppc64le (lp#2074275, reported by Claude R. C.)
15 * bug fix: address a rounding error in the TAN type deriver which led to a
16 miscompile in cl-pdf. (lp#2077100, reported by Gian Pierro Carrubba)
17 * bug fix: overoptimization of FIND with a :TEST of CHAR-EQUAL. (lp#2077539)
18 * optimization: detection of duplicate names in loaded code now scales
20 * optimization: switch from Floyd's to Brent's cycle detection for lists.
21 * optimization: EQUAL on lists should be faster.
22 * optimization: fewer filesystem operations are performed when working out
24 * optimization: various microoptimizations on hash tables and
25 associated operations.
26 * optimization: strings are now hashed using FNV-1A, replacing Bob Jenkins'
28 * optimization: fewer redundant validations of the sequence bounding indices
29 in POSITION on strings.
30 * optimization: many improvements to type derivation on the arguments to and
31 results of standard functions
32 * optimization: adding many (hundreds) methods to a generic function can be
35 changes in sbcl-2.4.7 relative to sbcl-2.4.6:
36 * minor incompatible change: the compiler will emit optimization notes
37 related to complex type checks only at high SPEED optimization settings.
38 * minor incompatible change: the GET-FOREGROUND symbol is now exported from
39 the SB-THREAD package. (thanks to Philipp Marek)
40 * minor incompatible change: code objects are now printed with their ending
41 address as well as their start address.
43 ** fix occasional saved core corruption on Win32. (reported by Luís
45 ** address some crashing cases in arena support. (reported by Andreas
47 ** fix a hard-coded path to `cp`. (thanks to Hraban Luyat)
48 ** address relocation issues on PIC-flavoured arm64. (lp#2067153, thanks
50 ** fix a crash in the arm64-dissassembler if a code component is missing.
51 ** fix a crash on 32-bit musl libc systems. (reported by Will Sinatra)
52 ** fix building with link-time optimization. (lp#2072800, reported by Eli
54 ** fix building with newer llvm. (lp#2071545, reported by Yan)
55 ** mitigate the lack of gc-safety in SB-VM::REMOVE-STATIC-LINKS.
57 * bug fix: COMPILE installs its second argument as the value of its non-null
58 NAME argument, even if the second argument was already compiled.
59 (lp#2071324, reported by Tim Bradshaw)
60 * bug fix: allow the hashing routines in sb-md5 to work on arrays with more
62 * bug fix: allow READ-SEQUENCE and WRITE-SEQUENCE to read and write files
64 * bug fix: READ-SEQUENCE returns the index of the first unmodified element
65 of its sequence. (reported by Janis Dzerins)
66 * optimization: various improvements to floating point rounding routines.
67 * optimization: PHASE called on the result of COMPLEX now elides the
68 intermediate COMPLEX object.
69 * optimization: the compiler is more aware of the types of COMPLEX, ATAN,
72 changes in sbcl-2.4.6 relative to sbcl-2.4.5:
73 * enhancement: name conflicts resulting from colliding symbols in IMPORT and
74 USE-PACKAGE are resolved once for each name, rather than between pairwise
76 * enhancement: calls to structure constructors with type mismatches in
77 default initforms cause compile-time warnings.
79 ** fix constant-folding of %log1p and %log2 on 32-bit x86.
80 ** fix the encoding of popcntd on ppc64
81 * bug fix: EXPORT could be tricked into exporting two distinct symbols of
82 the same name from the same package.
83 * bug fix: two-argument calls to LOG with arguments of different precision
84 do not lose accuracy through insufficiently-precise intermediate values.
85 * bug fix: :NEWLINE options in *DEFAULT-EXTERNAL-FORMAT* are respected when
86 opening files. (reported by Marco Antoniotti)
87 * bug fix: extend type declarations for the iteration variable of DOLIST
88 with NULL during the evaluation of the result clause. (lp#942237)
89 * bug fix: #\uE0 (LATIN CAPITAL LETTER A WITH GRAVE) was incorrectly not
90 downcased with STRING-DOWNCASE. (lp#2067841, reported by Matt Kaufmann)
91 * bug fix: backquoted lists as arguments to MAKE-ARRAY were miscompiled.
92 (lp#2069345, reported by Dan Bothell)
93 * bug fix: resolve the circularity between the type system and the CLOS
94 metaobject protocol more robustly. (lp#2069502, reported by Jan Moringen)
95 * bug fix: misplaced tilde in a logical pathname error message.
96 (lp#2069995, thanks to Marco Heisig)
97 * optimization: various speedups to UTF-8 based external format streams and
98 other stream routines.
100 changes in sbcl-2.4.5 relative to sbcl-2.4.4:
101 * incompatible change: attempting to pass or return alien structs by value
102 now signals errors. Previously, such attempts would silently tend to
103 corrupt registers or memory; there is work in progress to allow such calls
104 conforming to the platform ABI. (thanks to Rongcui Dong)
105 * minor incompatible change: function debug info is compressed only if the
106 system is compiled with libzstd, rather than falling back to a pure-lisp
107 compression implementation.
108 * minor incompatible change: the compiler will warn in more cases when it
109 can detect incorrectly-typed arguments to FORMAT directives ~C and ~R
110 * minor incompatible change: strings are converted to a more compact
111 representation if possible before being used as docstrings.
113 ** explicitly include stdlib.h where needed on OpenBSD. (thanks to
115 ** make the editcore utility work on Windows. (thanks to Luís Borges de
117 ** fix memory initialization in RUN-PROGRAM on Windows.
118 ** resolve a deadlock in %INTERRUPT-THREAD on Darwin. (lp#2062940,
120 ** hang on startup under some terminal emulators on OS X 14.5.
121 (lp#2067313, reported by Richard M Kreuter)
122 * enhancement: when (> debug 1), try to find source locations for code
123 expanded from macros that copy their input forms.
124 * bug fix: the method-combination generic function caches were missing some
125 of the generic functions constructed during the PCL build itself.
126 (reported by Didier Verna)
127 * bug fix: SXHASH on equal PATHNAME objects could return different values in
128 different cores. (reported by Luís Borges de Oliveira)
129 * bug fix: spurious compiler warnings on SORT in some circumstances.
130 (lp#2065609, reported by William G Lederer)
131 * optimization: faster bignum addition and negation on arm64, x86-64.
132 * optimization: faster type tests for (unsigned-byte X) for X being
133 multiples of the platform word size, on arm64, x86-64.
135 changes in sbcl-2.4.4 relative to sbcl-2.4.3:
136 * minor incompatible change: after-GC hooks are now called in the finalizer
137 thread on threaded builds.
139 ** on win32 on 64-bit systems, clear x87 state as well as SSE state after
140 an exception. (lp#2000435, reported by David Scherfgen)
141 * enhancement: type assertions resulting from declarations involving variable
142 numbers of multiple values are now checked.
143 * enhancement: support for memory allocation arenas is now available on the
145 * enhancement: the cross-referencing facility is now able to handle
147 * enhacnement: the SB-INTROSPECT contrib finds callees in methods of generic
149 * bug fix: inconsistency in VOP definitions implementing DPB. (lp#2059842)
150 * bug fix: MASK-FIELD miscompilation. (lp#2059849)
151 * bug fix: caching a state-dependent type function leads to wrong type
152 inference further down the line. (lp#2059888)
153 * bug fix: internal consistency violation after failing to apply a
154 MAKE-ARRAY transform. (lp#2060083)
155 * bug fix: check the array index before constant-folding an array reference.
157 * bug fix: don't try to apply type constraints from SATISFIES
159 * bug fix: the JOIN-THREAD-PROBLEM function is now exported from the
160 SB-THREAD package. (lp#2063385, thanks to Benjamin Lee)
161 * bug fix: compare-and-swap works as expected on SLOT-VALUE of
162 FUNCALLABLE-STANDARD-OBJECT instances. (reported by qhong)
163 * bug fix: on arm64, and x86-64 with some non-default build options, integer
164 rounding functions treat minus zero more consistently.
165 * bug fix: disassembly of stack allocation of vectors caused a crash.
166 (reported by bohonghuang)
167 * bug fix: don't leak memory when decompressing a compressed core.
168 * optimization: the amount of space needed for debug-info is about 50% less,
169 leading to a total default image size reduction of more than 10%.
170 * optimization: on arm64 and x86-64, encoding constants in machine code is
172 * optimization: on arm64 and x86-64, list accumulation is done with less
174 * optimization: APPLY can apply a function to the REST of a &REST list
175 without additional consing.
177 changes in sbcl-2.4.3 relative to sbcl-2.4.2:
178 * enhancement: when dumping debug information to fasl files, the system
179 respects the SOURCE_DATE_EPOCH environment variable (if set) as the latest
180 timestamp to be used.
181 * contributed module: the sb-perf contributed module, an interface
182 originally by Luke Gorrie to Linux's perf, is now included by default on
183 Linux. (Thanks to Philipp Marek)
185 ** on Linux and BSD variants, timezone querying is now faster.
186 ** Arm64/Darwin: allow configuring the system with a relocatable static
188 ** PPC64: allow configuring the system with fasteval.
189 * bug fix: erroneous transform of EQUALP on characters (lp#2055425)
190 * bug fix: float rounders (FTRUNCATE and related functions) handle minus
191 zero more consistently, returning minus zero as the primary value when
192 rounding to zero from a negative value.
193 * bug fix: type checks for (VECTOR T) were giving the wrong answer for
194 vectors displayed to simple multi-dimensional arrays. (reported by
196 * bug fix: do not transform away division by BIT when the BIT might still
197 include 0. (lp#2056184, reported by xizang)
198 * bug fix: various errors related to imperfections in the perfect hash
199 generator. (lp#2055794, lp#2056341)
200 * bug fix: respect declarations for symbol macros inside defmethod.
201 (lp#2056514, reported by Jonathan Braud)
202 * bug fix: failure to set structure slots to floats on Arm64. (lp#2058148,
203 reported by Bibek Panthi)
204 * optimization: improvements to the implementation of CASE.
205 * optimization: faster PARSE-INTEGER :radix 10/16 on word-sized integers.
206 * optimization: improvements to LOGBITP.
208 changes in sbcl-2.4.2 relative to sbcl-2.4.1:
209 * bug fix: restore the ability to inherit from both SEQUENCE and
210 SB-MOP:FUNCALLABLE-STANDARD-OBJECT. (lp#2050088, reported by Christophe
212 * bug fix: COERCE will not convert lambda forms to functions if given a type
213 naming a (strict) subclass of FUNCTION.
214 * bug fix: LOG with a double-float and a ratio argument (in either order) do
215 not lose precision through a single-float intermediate argument.
216 * bug fix: LOG to the base 2 of integer powers of 2 are more likely to get
217 the mathematically precise answer.
218 * bug fix: LOG on ratios very near 1 with numerator or denominator being
219 near a power of 2 will use log1p and so will lose less precision.
220 * bug fix: the utf-8 external format with Unix line-endings updates its
221 character size information when taking the fast path for a buffer of ascii
222 characters. (lp#2054169, reported by John Carroll)
223 * bug fix: don't print the contents of a possibly no-longer-valid
224 dynamic-extent cons in PRINT-OBJECT method for THREAD objects.
225 (lp#2026195, reported by Jake Connor)
226 * bug fix: place external entry points for functions consistently before any
227 local functions. (lp#2051169, reported by Fedorov Alexander)
228 * bug fix: remove unactionable optimization notes for backquoted forms and
229 ordinary calls to APPEND at high speed. (lp#2051401, reported by Robert
231 * bug fix: infinite loop in COPY-SEQ on zero-length arrays of element-type
232 NIL. (lp#2051759, reported by Devon Sean McCullough)
233 * bug fix: fix compilation of non-top-level struct constructors.
234 (lp#2052329, reported by Robert Poitras)
235 * bug fixes in SB-SIMD:
236 ** improve bounds checking in SB-SIMD. (lp#2012010, reported by Patrick
238 ** fix SB-SIMD AVX f64.4-reverse (lp#2012986, thanks to Ari Projansky)
239 ** fix SB-SIMD shuffles on AVX and SSE2 (lp#2012990, reported by Ari
241 ** fix lifetimes in sse+xmm0 VOPs (lp#2015329, reported by Ari Projansky)
242 * optimization: a number of internal tables, particularly those related to
243 Unicode support have been converted to use perfect hash mechanisms,
244 improving both speed and space.
245 * optimization: FIND, POSITION, ASSOC and RASSOC with constant sequence
246 arguments containing symbols as keys are compiled to perfect hash lookups.
247 * optimization: the compiler runs a jump-to-jump elimination pass on x86-64.
248 * system integrity: compiling the system itself on x86-64/linux now produces
249 bitwise-identical cross-compiled fasls whether the build host is cmucl,
250 ccl, clisp or sbcl itself.
252 changes in sbcl-2.4.1 relative to sbcl-2.4.0:
253 * enhancement: compact instance headers are partially supported with the
254 mark-region parallel garbage collector.
255 * enhancement: functions with declared return types have their return values
256 type-checked in optimization regimes with high SAFETY and (DEBUG 3).
258 ** disable ASLR on FreeBSD. (lp#2047655, thanks to Konstantin Belousov)
259 ** link to libpthread on FreeBSD. (thanks to Konstantin Belousov)
260 ** restore build on 64-bit riscv. (lp#2034713, lp#2048869, reported by
261 Guillaume LE VAILLANT)
262 ** restore build on 64-bit ppc.
263 ** fix case in referring to a header file. (lp#2047726, thanks to Andrew Kravchuk)
264 ** the fastrem-32 feature (for optimized computations of FLOOR) is now
265 available on all platforms.
266 * bug fix: resweep moved lines after compaction in the mark-region parallel
268 * bug fix: infinite loops in the compiler on some constructs with SATISFIES
269 types. (lp#2047289, lp#2047706, lp#2049631)
270 * optimization: various hash tables implementing part of the system
271 (packages, Unicode data tables) have been converted to use perfect hash
273 * optimization: TYPECASE on structure class hierarchies is implemented using
275 * optimization: eliminate bound checks with relative offsets. (lp#1830314)
276 * optimization: the compiler has more knowledge of how to optimize
278 * optimization: the compiler can elide intermediates for some calls to
279 APPLY, CONCATENATE and MAKE-ARRAY with arguments that are freshly-consed
280 modifications of existing sequences.
281 * optimization: (LOOP FOR X IN (REVERSE LIST) ...) is now faster and conses
283 * optimization: (LOOP ... APPEND ...) is more compact, and does less work if
285 * optimization: type tests of various array types are faster and shorter.
287 changes in sbcl-2.4.0 relative to sbcl-2.3.11:
288 * minor incompatible change: *COMPILE-VERBOSE* and *LOAD-VERBOSE* are bound
289 to NIL when the system is started with the --script command-line argument.
290 (reported by Hraban Luyat, thanks to Nicolas Martyanoff)
291 * minor incompatible change: when looking for its core file, the system
292 checks the validity of whatever is pointed to by /proc/self/exe, and
293 assesses argv[0] if /proc/self/exe is invalid. (thanks to Philipp Marek)
294 * minor incompatible change: the system no longer provides type names on the
295 standard (CL) symbols ARRAY-RANK, ARRAY-TOTAL-SIZE, PATHNAME-HOST,
296 PATHNAME-TYPE, PATHNAME-DIRECTORY, FLOAT-RADIX or FLOAT-DIGITS.
299 ** the mark-region parallel garbage collector can be enabled on arm64.
300 (Thanks to Hayley Patton)
301 ** fix build on modern FreeBSDs. (lp#2046966, thanks to David J. Flander)
302 * bug fix: restore compiler type inference correctness on calls to REDUCE
303 with :INITIAL-VALUE but no :FROM-END. (lp#2044856, reported by Patrick
305 * bug fix: compiler error when declaring SB-EXT:MUFFLE-CONDITIONS on an
306 unknown type. (lp#2045442)
307 * bug fix: the disassembler provided non-pretty output for registers in some
308 cases. (lp#2046004, reported by Fedorov Alexander)
309 * bug fix: the system is slightly less likely to exhaust the stack again
310 when reporting a control stack exhaustion error.
311 * optimization: GC write barriers are eliminated in more cases.
312 * optimization: improved type derivation of iteration variables with mixed
314 * optimization: remove unused initial values from LET bindings, improving
315 register type selection.
316 * optimization: lower EQUALP/EQUAL/EQL to EQL/EQ in FIND/MEMBER based on the
318 * optimization: better type derivation for DPB, LOGIOR.
320 changes in sbcl-2.3.11 relative to sbcl-2.3.10:
321 * minor incompatible change: streams with an external-format specified with
322 :REPLACEMENT will use their replacement data once per stream unit that
323 causes a decoding error (rather than, in some cases, once for a sequence
324 of bytes none of which is a valid character start position for that
326 * minor incompatible change: external-format designators with unsupported or
327 unrecognized options now signal an error when used.
328 * enhancement: During generic function dispatch, for a generic function
329 using standard- or short-method-combination, if there are no applicable
330 primary methods the system will call the generic function
331 SB-PCL:NO-PRIMARY-METHOD, whose default behaviour is to signal an error.
332 Users may define methods on this generic function.
333 * enhancement: external formats for unibyte encodings and utf-8 now support
335 * enhancement: character decoding and encoding errors signalled by stream or
336 octet functions now provide a USE-VALUE restart for handlers to provide
337 replacement input or output.
338 * enhancement: READ-SEQUENCE and WRITE-SEQUENCE support user-defined
339 sequences; the default implementation proceeds element-by-element, reading
340 or writing single bytes or characters to or from the stream as
342 * bug fix: OCTETS-TO-STRING using unibyte external formats with unallocated
343 codepoints (e.g. iso-8859-3) correctly signal or use replacements rather
344 than taking bits from the address of NIL and converting those bits to
346 * bug fix: FILE-STRING-LENGTH now returns NIL if the input datum is not
347 encodable in the stream's external format.
348 * bug fix: table-based multibyte external formats (EUC-JP, Shift-JIS, GBK)
349 now honour a replacement character (in the external format or through
350 restarts) when encoding to octets.
351 * bug fix: converting from octets using the UCS-2, UCS-4 and UTF-32 external
352 formats no longer reads past the end of an octet array with a non-integral
353 number of two- or four-byte units.
354 * bug fix: converting from octets using the UCS-2, UCS-4, UTF-16 or UTF-32
355 external formats now returns a simple string, as required by the type
356 declaration of OCTETS-TO-STRING.
357 * bug fix: providing an invalid external format argument to OPEN or
358 WITH-OPEN-FILE (or the internal MAKE-FD-STREAM) no longer leaks a file
360 * bug fix: SB-ROTATE-BYTE recognizes out-of-relevant-range BYTE
361 specifications for integers before attempting to cons up enormous bignums
362 for masking and shifting. (lp#2042937)
363 * bug fix: fix type derivation on compiling SB-ROTATE-BYTE forms with
364 non-zero POSITION in the byte specifier. (lp#2042775)
365 * bug fix: fix multiple assembler errors when compiling MAKE-ARRAY,
366 MAKE-STRING and similar with a large constant size. (lp#2037347, lp#2038744)
367 * bug fix: fix internal error when compiling (SETF SBIT) with a large
368 constant index. (lp#2037415)
369 * bug fix: fix internal compiler error on invalid lambda list parameters in
371 * bug fix: fix internal compiler error when compiling some
372 infinitely-recursive LABELS forms. (lp#2042704)
373 * bug fix: fix internal compiler error when attempting to inline a jump to a
374 label that has been deleted. (lp#2043262)
375 * bug fix: FILL-POINTER should never be made to go negative. (lp#2042452)
376 * optimization: external formats with :REPLACEMENT no longer bind handlers
377 for coding errors around conversion functions, and so should cons less and
379 * optimization: when the :EXTERNAL-FORMAT argument to STRING-TO-OCTETS or
380 OCTETS-TO-STRING is a compile-time constant, the external format is
381 resolved at load time rather than on each call.
382 * optimization: the compiler is able to constrain the types of inputs to
383 some functions given a derived or asserted type of the function's return
385 * optimization: the compiler performs fewer redundant type checks in ASSOC,
386 GETF and similar functions.
388 changes in sbcl-2.3.10 relative to sbcl-2.3.9:
389 * enhancement: The compiler now allows stack allocating vectors of any size
390 on all safety levels, not just those which it can prove are of sub-page
391 sizes. It can do this because it now inserts code to check for stack
392 overflow explicitly on higher safety levels.
393 * enhancements to the disassembler:
394 ** on arm64, x86-64, DISASSEMBLE annotates references to static symbols.
395 * bug fix: calls to generic functions now detect erroneous keywords (in the
396 sense of CLHS 7.6.5) passed as arguments even when auxiliary methods are
398 * bug fix: the standard method on SB-MOP:COMPUTE-EFFECTIVE-METHOD no longer
399 inserts calls to implementation-defined local macros. (reported by Daniel
401 * bug fix: compiler error from state-machine-like LABELS forms in some
402 circumstances. (lp#2037318)
403 * bug fix: fix compile-time error in constant-folding RATIONAL on literal
404 float infinities. (lp#2037455)
405 * bug fix: failure on x86-64 to assemble code for EQL tests of comparisons
406 with immediates. (lp#2037456)
407 * bug fix: infinite loop in the compiler for simplification of type tests of
408 complicated union types. (lp#2038112, reported by Paul M. Rodriguez)
409 * bug fix: inability to dump a literal displaced array containing copies of
410 its displacement target. (lp#2038233, reported by James Kalenius)
411 * bug fix: compiler error in LOGBITP type derivation. (lp#2038241)
412 * bug fix: compiler error in AREF type derivation. (lp#2038659)
413 * bug fix: compiler internal consistency failure in overflow type checks.
415 * bug fix: work around an infinite loop in type simplification by not
416 providing such types from the compiler. (lp#2038980, reported by Richard
418 * bug fix: spurious run-time argument count errors from generic function
419 calls on arm64. (lp#2039006, reported by fiddlerwoaroof)
420 * bug fix: errors in SCALE-FLOAT on floating-point infinities. (lp#2039613)
421 * bug fix: ROOM is slightly more robust to incompletely-initialized
422 instances at the point of running ROOM. (Reported by Andreas Franke)
423 * bug fix: finalizers saved through SAVE-LISP-AND-DIE and subsequently
424 executed do not trigger memory faults. (Reported by Bohong Huang)
425 * optimization: improvements to type derivation for ISQRT, INTEGER-LENGTH,
426 LOGCOUNT, LOG, DENOMINATOR.
428 changes in sbcl-2.3.9 relative to sbcl-2.3.8:
429 * enhancement: stack allocation via DYNAMIC-EXTENT now applies to all values
430 that a variable can take on (for example via SETQ), not just the initial
431 binding. This permits for example building complex or recursive structures
432 on the stack more easily via iteration. See the updated manual entry for
434 * minor incompatible change: some interfaces in the SB-POSIX contrib module
435 adhere to the spec that a NULL result from the C library is an error if
436 and only if errno was altered by the call. SYSCALL-ERROR will be signaled
438 * enhancement: the SB-POSIX contrib module provides DO-PASSWDS and DO-GROUPS
439 to allow users to iterate over password and group databases safely.
441 ** support for Darwin on x86 and PowerPC has been restored. (lp#2033287,
442 thanks to Kirill A. Korinsky, Sergey Fedorov and barracuda156)
443 * bug fix: miscompilation due to erroneous type derivation in the presence
444 of multiplication of fixnums by ratios. (lp#2033695, reported by Patrick
446 * bug fix: compiler error when compiling signed- and unsigned 64-bit type
447 checks in some cases. (lp#2033997, reported by Eric Smith)
448 * bug fix: compiler error when the :INITIAL-CONTENTS argument to MAKE-ARRAY
449 is a constant non-sequence. (lp#2037328)
450 * bug fix: compiler error when constant-folding sequence functions with
451 :TEST or :KEY functions erroring on the given sequence. (lp#2037341)
452 * bug fix: compiler error when arguments to array or sequence functions
453 imply a very large sequence size. (lp#2037443, lp#2037348)
454 * bug fix: compiler error when the return value of ADJUST-ARRAY is not used.
456 * optimization: function types derived by the compiler can in some cases be
457 propagated backwards through the intermediate representation.
458 * optimization: better type derivations for LDB, LOGBITP, RATIO.
459 * optimization: eliminate bound checks in more cases involving transitive
462 changes in sbcl-2.3.8 relative to sbcl-2.3.7:
463 * enhancement: a mark-region parallel garbage collector is available as a
464 build-time option; it can be enabled by adding
465 `--without-gencgc --with-mark-region-gc`
466 to the build command line. (Thanks to Hayley Patton)
467 * enhancement: Stack allocation via DYNAMIC-EXTENT is now possible for
468 conditionals even when not all branches are stack-allocatable. Previously
469 all branches needed to be stack-allocatable for the otherwise-inaccessible
470 subparts to get stack allocated.
472 ** on Mac OS X Sonoma, loading the memory image no longer fails.
473 (lp#2029430, reported by cladur)
474 ** on Darwin, we no longer reimplement nanosleep().
475 ** on PPC64, undefined function errors now work.
476 ** on ARM64/OpenBSD, enable the GCC TLS feature. (thanks to Sébastien
478 ** when building the system, only display a reasonable amount of timing
479 precision. (thanks to Philipp Marek)
480 * bug fix: handling of inlining functions compiled to return unboxed values
481 no longer crashes the compiler. (lp#2029020, reported by Pascal
483 * bug fix: the source location for code executed within a top-level
484 (EVAL-WHEN (:COMPILE-TOPLEVEL) ...) form is now more useful.
485 * bug fix: address a race between user threads cancelling finalizers and the
486 finalizer thread executing them. (lp#2029306)
487 * bug fix: complex division returns the same value when evaluated inline and
488 out-of-line. (lp#2030097)
489 * bug fix: the pretty-printer no longer deletes syntactically-significant
490 whitespace immediately preceding a newline. (lp#1985814, reported by Mark
492 * optimization: the compiler is more aware of the result type of the
494 * optimization: EQUAL and EQUALP compile to more efficient code when the two
495 arguments are known to be of the same nullable type.
496 * optimization: converting bignums to floats uses no intermediate memory.
498 changes in sbcl-2.3.7 relative to sbcl-2.3.6:
499 * minor incompatible change: MACROLET macro functions are now compiled with
500 (SPEED 1), leading to fewer efficiency notes being emitted when compiled
501 in otherwise high-SPEED environments.
502 * minor incompatible change: when coalescing list data, the file compiler
503 respects substructure equality more accurately, with the side-effect of
504 coalescing along CDR chains as well as CARs. (lp#2025086)
505 * minor incompatible change: FUNCTION type declarations for local variables
506 generate assertions around their use when called.
508 ** on OpenBSD, the regression test suite expectations have been updated.
509 (lp#2026809, thanks to Sebastien Marie)
510 ** on OpenBSD, the data limit is now 1GB. (lp#2027536, thanks to
512 ** on Darwin with the SB-FUTEX feature, do not use unpaired
513 mach_thread_self() syscalls, avoiding resource leaks when creating
515 ** on 64-bit RISCV, add support for some REM-by-multiplication
517 ** on Windows, work around a C compiler bug relating to SYSV_ABI.
518 * bug fix: FILE-POSITION on string output streams no longer crashes or
519 causes arbitrary memory overwrites. (lp#1839040)
520 * bug fix: the compiler no longer constant-folds POSITION to NIL if the
521 START or END arguments are not valid.
522 * optimization: the compiler derives types of &KEY arguments in local calls.
524 * optimization: type tests of values of known union type can be faster if
525 the type being tested for has a non-trivial intersection with the known
527 * optimization: the low-level implementation of NUMBERP, REALP and RATIONALP
528 has been improved on x86-64 and arm64.
529 * optimization: the compiler removes known-NIL arguments from calls to
530 APPEND and NCONC, and empty sequences from calls to CONCATENATE.
531 * optimization: checks for symbols being bindable are now memoized, speeding
532 up compiled uses of PROGV.
533 * optimization: SLOT-VALUE on STRUCTURE-OBJECTs with non-constant slot-name
536 changes in sbcl-2.3.6 relative to sbcl-2.3.5:
538 ** restore building contribs on riscv; (lp#2002930)
539 ** shorter constant-loading sequences on riscv;
540 ** on OpenBSD, map the stack without executable permission (thanks to
542 ** Restore OpenBSD/arm64 for OpenBSD 7.3 (lp#2024003, reported by Robert
544 * bug fix: AREF on multidimensional arrays with the wrong number of indices
545 now signals an error. (lp#2022327, reported by EU)
546 * bug fix: the nature of NIL as both STRING and SEQUENCE is correctly handled
547 in the compiler's handling of string functions. (lp#2023118, reported by
549 * bug fix: the sb-bsd-sockets tests no longer fail on systems configured
550 without IPv6. (reported by Will Senn)
551 * bug fix: the compiler no longer transforms into incompletely-known functions
553 * optimization: better (the word-sized-type (ASH word-sized word-sized))
554 when the result can overflow. For arm64 and x86-64.
555 * optimization: better unoptimized calls to CEILING, FLOOR.
556 * optimization: functions that involve coercing floats now cons less.
557 For arm64 and x86-64.
558 * optimization: array displacement to simple arrays is slightly faster.
559 (reported by Shubhamkar Ayare)
561 changes in sbcl-2.3.5 relative to sbcl-2.3.4:
562 * enhancement: Unicode support has been updated to support version 15.0.0 of
563 the Unicode standard, including addition of characters and their collation
564 keys, and refinements to grapheme-, word- and line-breaking algorithms.
565 * new contrib module: an interface to perf, a performance-analysing tool for
566 Linux. (thanks to Luke Gorrie and Philipp Marek)
568 ** on x86-64, prefer using the LEAVE instruction rather than MOV/POP at
569 function epilogue to restore RSP/RBP.
570 ** support SB-FUTEX on OpenBSD. (thanks to Elijah Stone)
571 ** support SB-FUTEX on Darwin/arm64. (thanks to Elijah Stone)
572 ** fix compilation with clang on Windows. (lp#2018601, thanks to Andrew)
573 * bug fix: inspecting objects with unbound slots produces output that is less
574 confusable with the string "unbound". (thanks to Nicolas Martyanoff)
575 * optimization: make TN-REFs doubly-linked, allowing faster deletion.
576 (lp#2018124, reported by Matt Kaufmann)
577 * optimization: MAPCAN/MAPCON are less accidentally quadratic. (thanks to
579 * optimization: improved arithmetic operations in the form of
580 (the word-sized-type (-+* word-sized word-sized)) when the result can
581 overflow. For arm64 and x86-64.
583 changes in sbcl-2.3.4 relative to sbcl-2.3.3:
584 * enhancement: attempts to call non-callable objects can now provide
585 USE-VALUE restarts on x86-64 and arm64.
586 * bug fix: ioctl() (both in SBCL's internals and through SB-POSIX) was
587 broken on ARM64/Darwin. (reported by fiddlerwoaroof)
589 ** support for cross-compiling the system to Android has been added;
591 ** include likely absolute paths for gmp and mpfr on ARM64/Darwin; (thanks
593 ** include another absolute path for mpfr on Windows; (thanks to Ari
595 ** the PROMISE-COMPILE feature from the SB-CONCURRENCY contrib is now
596 available on all threaded platforms;
597 * optimization: VALUES-LIST performs less redundant work on x86-64 and
600 changes in sbcl-2.3.3 relative to sbcl-2.3.2:
601 * enhancement: LET-bound anonymous closures declared dynamic extent can now
602 be stack allocated, just like closures bound with FLET or
603 LABELS. Otherwise-inaccessible closure subparts of objects declared
604 dynamic extent can now also be stack allocated
605 * optimization: many standard CL functions which take functional arguments
606 will automatically stack allocate any downward funarg closures.
607 * optimization: better arithmetic between signed and unsigned words on arm64.
608 * optimization: reduce consing when doing arithmetic resulting in small (3
609 words or fewer) bignums.
610 * bug fix: miscompilation of some additions of signed and unsigned words on
612 * bug fix: loading the SB-SIMPLE-STREAMS contrib no longer incompatibly
613 overwrites CL:OPEN's function type. (lp#2008811)
614 * bug fix: implement the special-case automatic function definition for
615 PCL's slot accessor functions in the SB-EVAL interpreter. (lp#2008922,
616 reported by Jonathan Braud)
617 * bug fix: allow the build to succeed under SBCLs older than 2.0.0 in the
618 event that the host emits STYLE-WARNINGs while compiling the
619 cross-compiler. (lp#2009493, reported by Kirill)
620 * bug fix: restore compilation on ARM64 with OpenBSD. (lp#2009585, reported
622 * bug fix: compiling a HANDLER-BIND with a function undefined at
623 compile-time produces a compile-time STYLE-WARNING. (lp#2010176)
624 * bug fix: support files bigger than 4GB on ARM64/Linux, *BSD. (lp#2011453,
626 * bug fix: it is now possible to run sb-simd tests on systems without AVX2.
627 (lp#2011923, thanks to Sergio Durigan Junior)
628 * bug fix: miscompilation of some conditional moves. (lp#2012312, reported
630 * bug fix: SB-GMP no longer signals a TYPE-ERROR when raising a ratio base
631 to a negative integer exponent. (lp#2012577, thanks to Ari Projansky)
632 * bug fix: warn the user when they have declared a structure or
633 standard-object slot of :TYPE NIL.
635 changes in sbcl-2.3.2 relative to sbcl-2.3.1:
636 * incompatible change: the :ORDER long-form-option in
637 DEFINE-METHOD-COMBINATION accepts NIL as well as :MOST-SPECIFIC-FIRST and
638 :MOST-SPECIFIC-LAST. A value of NIL implies no particular ordering of the
639 methods, and so disables checks of multiple methods with the same
640 specializers in that group.
641 * bug fix: evaluate the :ORDER long-form-option in DEFINE-METHOD-COMBINATION
642 properly, avoiding an infinite loop in DEFINE-METHOD-COMBINATION if the
643 :ORDER argument leads to a cycle of compile-time constants.
644 * bug fix: better compile time on chains of conditionals which have gaps in
645 integer ranges. (lp#1992349, reported by Mykola Matvyeyev)
646 * bug fix: type derivation of VECTOR-LENGTH leading to wrong type handling
647 for MEMBER types involving vectors. (lp#2004094)
648 * bug fix: equality constraint propagation in the presence of constants
649 could cause code to be not deleted when it should have been. (lp#2006487)
650 * bug fix: better compile time when the compiler needs to perform checks to
651 see if fixnum or word computations result in overflow. (lp#2007741)
652 * bug fix: miscompilation on ARM64. (lp#2007758, reported by Stephen
654 * optimization: on x86-64, use SIMD instructions for UTF-8 buffer decoding;
655 * various type-driven optimizations:
656 ** comparisons of rationals with constant ratios or floats;
657 ** comparisons of unsigned-bytes with fixnums;
658 ** comparisons of fixnums with constant powers of two;
659 ** equality of numbers with integers too large to be exactly represented
661 ** arithmetic operations on a mixture of signed and unsigned word-sized
664 changes in sbcl-2.3.1 relative to sbcl-2.3.0:
665 * sb-graph has been removed. To visualize IR1 in sbcl, it is recommended to
666 use the function IR1-TO-DOT (which only survives the final tree shake if
667 the feature :sb-devel is enabled at build time).
669 ** implement some peephole optimizations on arm64;
670 ** support float traps on arm64;
671 * bug fix: package-manipulation operations within fasls work as expected in
672 the absence of explicit block compilation requests. (lp#2000004, reported
674 * bug fix: incorrect type simplification of certain CONS types.
675 (lp#1999352, reported by Paul Dietz)
676 * bug fix: method combination group selection interprets the symbol * as
677 a wildcard element within proper qualifier-pattern lists. (reported by
678 Maciej Katafiasz and by Daniel Kochmański)
679 * bug fix: &WHOLE can be used without error in define-method-combination
680 arguments lambda lists. (reported by Daniel Kochmański)
681 * bug fix: bogus debug variables generated for closure variables whose value
682 cell had not yet been allocated could cause segfaults and gc crashes
683 (reported by _death on #sbcl)
684 * bug fix: handling of float NaNs in two-arg numeric comparison functions is
685 more consistent with the required semantics in IEEE 754 when comparing
687 * bug fix: ensure that the hide-packages test passes even when the system
688 retains internal cross-reference metadata. (lp#2002896, reported by 3b)
689 * bug fix: don't trip an internal assertion in weak hash tables with
690 finalizers. (lp#1998064)
691 * optimization: load-time only code is no longer retained at runtime when
692 functions close over top level bindings.
693 * optimization: GO and RETURN-FROM now elide out-of-extent tag checks when
694 the compiler can prove it's safe even on high safety.
695 * optimization: addition of a fixnum to a bignum generates less garbage.
696 * optimization: in many cases, type inference and code generation is
697 improved for and around numerical comparison functions.
699 changes in sbcl-2.3.0 relative to sbcl-2.2.11:
700 * enhancement: support for SLOT-VALUE and friends has been extended to
701 structure and condition instances.
702 * enhancement: the error message for invalid array index conditions is clearer.
703 (lp#1999337, reported by Hadrien Lacour)
704 * minor incompatible change: COMPILED-FUNCTION-P now returns false for
706 * minor incompatible change: the compiler emit STYLE-WARNING conditions for
707 FIND and POSITION where the item sought can never be present in the
709 * optimization: support computing the remainder of a constant division by
711 * optimization: faster out of line float truncation routines.
712 * optimization: faster RATIONAL on 64-bit platforms.
713 * optimization: more compact testing of widetags on x86-64 and arm64.
714 * bug fix: type intersections of RATIONAL ranges with (NOT INTEGER) are
715 computed more consistently. (lp#1998008)
716 * bug fix: fix miscompilation of integer/fixnum comparisons where both
717 arguments are on the stack.
719 changes in sbcl-2.2.11 relative to sbcl-2.2.10:
721 ** arm64: allow the use of CLISP as a build host. (lp#1996942, reported
723 * enhancement: improvements to constraint propagation around comparison
725 * optimization: conditional move VOPs can work on boxed values and
726 produce less consing.
727 * optimization: NUNION and UNION are generally faster.
728 * bug fix: slot-makunbound-using-class can be redefined without redefining
729 the other slot methods. (lp#1956621, reported by Michał Herda)
730 * bug fix: GETHASH on a table created without ":synchronized t" when run
731 concurrently in multiple threads could have returned incorrect results.
732 * bug fix: build of contributed modules assumed that 'cat' was always
733 in /bin/cat on POSIX systems. (lp#1995224, reported by Kasper Gałkowski)
734 * bug fix: INSPECT on an (ARRAY NIL) no longer hangs. (lp#1995639, reported
736 * bug fix: Fix miscompilation of FILE-STRING-LENGTH when the first argument
737 has a known FILE-STREAM type. (lp#1995881)
739 changes in sbcl-2.2.10 relative to sbcl-2.2.9:
741 ** win32: improved handling of stack overflow exceptions. (lp#1302866)
742 ** Mac OS X: enforce stronger alignment when building the runtime.
743 (lp#1991485, reported by Yan)
744 ** arm64: support for building the system without the sb-unicode feature
745 (i.e. with 8-bit characters) is restored.
746 * bug fix: do not elide the GC store barrier in closures. (lp#1982608,
747 reported by Andrew Berkley)
748 * bug fix: make sb-introspect tests pass when the system is built without
749 support for source locations. (lp#1635349, reported by Tomas Hlavaty)
750 * bug fix: erroneous assumption that the format-control of a simple condition
751 was a string. (lp#1803727)
752 * bug fix: compiler consistency failure in modular arithmetic widening.
754 * bug fix: provide a stub for a helper function (lp#1992316)
756 changes in sbcl-2.2.9 relative to sbcl-2.2.8:
758 ** fix build on Darwin platforms with -fno-common. (lp#1980570, thanks to
760 ** include /usr/local paths when building on FreeBSD. (lp#1981112,
761 reported by William G Lederer)
762 ** several micro-optimizations on x86-64, including: better use of
763 INC/SUB, better SAP+, shorter KEYWORDP, better argument count
765 ** arm64: better KEYWORDP, better argument count verification
766 ** fix build on 32-bit Windows. (lp#1988534, thanks to Alexis Rivera)
767 ** x86-64: WITH-PINNED-OBJECTS can pin constants. (lp#1989037)
768 * bug fix: make sb-simd build in compiler-only SBCL. (thanks to Tonas
770 * bug fix: SB-SPROF:WITH-PROFILING now returns the value of its body (as was
771 advertised in its documentation).
772 * bug fix: catch malformed LET* forms in DEFMETHOD bodies. (lp#1988880,
773 reported by Patrick Poitras)
774 * enhancement: better source form tracking for atoms in LET bindings.
775 * optimization: reader character macro lookup is simpler and faster.
776 * optimization: FILL-POINTER (and its setter) are more compact.
778 changes in sbcl-2.2.8 relative to sbcl-2.2.7:
779 * minor incompatible change: support for 32-bit x86/Darwin has been removed.
780 * bug fix: fix miscompilation related to empty infinite loops preceded by
781 conditional expressions. (lp#1986810, reported by Artyom Bologov)
782 * bug fix: fix gc invariant violations. (lp#1983218, reported by Marius
783 Gerbershagen; lp#1983248, reported by Vasily Postnicov)
784 * bug fix: use CC to compile SBCL as a shared library. (lp#1976148,
785 reported by Pierre Neidhardt)
786 * bug fix: don't crash the system completely if RUN-PROGRAM fails to create
787 a pipe. (lp#1979841, reported by Thor Kristofferson)
788 * bug fix: be more disciplined about use of C system includes. (lp#1981799,
789 reported by Mark Evenson)
790 * bug fix: STRING/= returning wrong results for some cases when :END1/:END2
791 were not compile-time constants. (lp#1983284)
792 * bug fix: compile-time checking of :START and :END keyword arguments to
793 FILL is more complete.
794 * optimization: adjacent type tests on the same value are more compact
796 * optimization: the compiler can inline COPY-STRUCTURE in more cases.
797 * optimization: type checks for non-simple arrays are shorter.
798 * optimization: printing strings (as Lisp data) is faster.
800 changes in sbcl-2.2.7 relative to sbcl-2.2.6:
801 * minor incompatible change: the compiler emits full WARNINGs for undefined
802 references to variables in TYPE and DYNAMIC-EXTENT declarations, and for
803 SETQ of an undefined variable. (This was the historic behaviour for
804 everything except the DYNAMIC-EXTENT case, which used to emit a
805 STYLE-WARNING, but these diagnostics got lost in a refactoring since
807 * minor incompatible change: literal objects (strings, in particular)
808 in compiled code may at the discretion of the runtime be placed in
809 read-only memory. Violations of CLHS 3.7.1 could produce memory faults.
810 If ":PURIFY NIL" is given to SAVE-LISP-AND-DIE then no read-only memory
812 * enhancement: Unicode support has been updated to support version 10.0.0 of
813 the Unicode standard, including addition of characters and refinements to
814 breaking and collation algorithms.
815 * bug fix: AVX is no longer used for loading simd-pack-256 constants.
817 * bug fix: fix building the manual when some contribs are blocked or
818 otherwise disabled. (lp#1979821, thanks to Robert Schiele)
819 * bug fix: fix type derivation of sequence functions with highly-specific
820 declared argument types. (lp#1980292, reported by James Kalenius)
821 * bug fix: internal error when optimizing chains of conditionals in local
822 functions. (lp#1981607, reported by Pasha K)
823 * bug fix: fix comparison of negative floats with bignums.
824 * optimization: faster TRUNCATE with float arguments.
825 * optimization: EQUALP hashing of large floating point values should
826 generate less garbage.
828 changes in sbcl-2.2.6 relative to sbcl-2.2.5:
829 * minor incompatible change: support for 32-bit x86 on macOS has been
831 * new contrib: sb-simd, to provide a convenient interface for SIMD
832 programming on x86-64. (Thanks to Marco Heisig and other sb-simd
834 * enhancement: core compression now uses zstd instead of zlib. (lp#1881089)
835 * enhancement: provide compiler warnings for specialized array type
836 mismatches in CONCATENATE.
837 * enhancement: provide compiler warnings for bad sequence bounding index
838 designator arguments to sequence functions.
839 * enhancement: The sb-mpfr contrib now allows coercion from MPFR-FLOATs
840 to CL:RATIONAL. (Thanks to Robert Smith)
841 * bug fix: fix compilation failure related to declaiming types of constants.
842 (lp#1977726, reported by Pierre Neidhardt)
843 * bug fix: fix race condition in CLOS optimized constructors. (lp#1951341)
844 * bug fix: fix too-eager elision of allocation barriers when initializing
845 closure and structure objects.
846 * optimization: fasl files are now usually smaller (up to 10% on default
847 policy) and may load faster, especially on high debug.
848 * optimization: faster string comparisons on arm64, x86-64.
849 * optimization: faster [n]string-down/upcase on arm64, x86-64.
850 * optimization: faster [n]reverse for 8- and 32-bit element vectors on
852 * optimization: faster type tests for (CONS (EQL symbol)) on x86-64.
854 changes in sbcl-2.2.5 relative to sbcl-2.2.4:
855 * minor incompatible change: SB-EXT:*DERIVE-FUNCTION-TYPES* being NIL now
856 means that function calls will strictly only use type information from
857 proclaimed ftypes. The previous behavior (still the default) of using
858 derived type information from the same file is specified with :SAME-FILE.
860 * minor incompatible change: RENAME-FILE now overwrites the target file on
861 Windows too, making its behaviour consistent with other platforms.
862 * minor incompatible change: inlining of local function is inhibited if
865 ** single-stepping is now supported on 64-bit PowerPC platforms. (thanks
866 to Thomas Fitzsimmons)
867 ** the :SB-LINKABLE-RUNTIME feature is now supported on 32-bit and 64-bit
868 PowerPC platforms. (thanks to Thomas Fitzsimmons)
869 * optimization: improved type derivation of REDUCE with some known reducing
871 * enhancement: debug source locations now work correctly for top level forms
872 with policy DEBUG = 1, as well as for block compiled files.
873 * enhancement: TRACE now supports tracing macro functions, compiler-macro
874 functions, individual methods and local functions. See the user manual for
875 more details. (lp#375314)
876 * bug fix: fix integer comparisons on x86-64 and arm64 (lp#1971088, reported
877 by Guillaume LE VAILLANT)
878 * bug fix: coverage instrumentation behaves correctly with respect to
880 * bug fix: ftype proclamations now take effect immediately during block
882 * bug fix: block compilation of top-level closures now work. (lp#1931730,
883 reported by Sean Maher)
884 * bug fix: streams opened from RUN-PROGRAM but left unclosed because of a
885 non-local exit no longer cause unrelated streams to be closed later.
887 changes in sbcl-2.2.4 relative to sbcl-2.2.3:
888 * enhancement: better constraint propagation in the compiler. Specifically,
889 the compiler can now derive the type of X in control flow join situations
891 (LAMBDA (X) (ECASE (1 ...) (2 ...)) X)
893 (LAMBDA (X) (ETYPECASE (INTEGER ...) (SYMBOL ...)) X)
894 instead of forgetting all information about X after the E(TYPE)CASE.
895 * optimization: inlined functions enclosed in local macro definitions no
896 longer save their entire lexical environment, reducing unnecessary
898 * optimization: faster (< integer fixnum) comparisons (ARM64 and x86-64).
900 ** RUN-PROGRAM is faster on Linux and FreeBSD if close_range(2) is
902 * bug fix: block compilation now interacts more correctly with the creation
904 * bug fix: internal compiler error in array reference
905 optimizer. (lp#1966624)
907 changes in sbcl-2.2.3 relative to sbcl-2.2.2:
908 * minor incompatible change: SB-THREAD:MUTEX-OWNER may return :THREAD-DEAD
909 if the apparent owner either exited nearly instantly after releasing the
910 mutex (and is not now the owner), or died and never released it.
911 * minor incompatible change: building the system with the simple semi-space
912 copying collector is no longer supported.
913 * minor incompatible change: support for PPC/Darwin has been removed.
915 ** fix regressions in threads on RISC-V. (lp#1962598)
916 ** threads are now enabled by default on RISC-V.
917 ** The generational garbage collector is now supported on MIPS.
918 * optimization: fasls containing standard object literals are now smaller
919 and load more efficiently.
920 * optimization: faster arithmetic (*-+) on word-sized integers when the
921 result is not known to fit into a word (ARM64 and x86-64).
922 * bug fix: EQness of constants is now always preserved when block compiling.
924 changes in sbcl-2.2.2 relative to sbcl-2.2.1:
926 ** all architectures now share the coverage mark instrumentation
927 implementation, meaning that performance now equals what had been
928 implemented only on x86 architectures.
929 ** fixed a performance regression on x86-64 from changes in AVX2 register
930 handling. (lp#1960081, reported by Michael Kappert)
931 ** fixed a garbage collection bug on ppc64 manifesting in occasional
932 corruption on threaded programs. (lp#1959338, lp#1952973)
933 ** micro-optimizations in type tests for (SIGNED-BYTE 64).
934 * enhancement: improved handling of source locations for some classes
935 of compile time and runtime errors.
936 * enhancement: better source locations for structure accessors.
937 * bug fix: SB-COVER now always instruments top level forms correctly.
938 * bug fix: muffling conditions now works correctly on higher debug settings.
939 * bug fix: local muffling declarations now scope correctly with respect to
940 undefined variable warnings.
941 * optimization: calls to STRING= can now return NIL more quickly on strings
944 changes in sbcl-2.2.1 relative to sbcl-2.2.0:
945 * incompatible change: DEFINE-ALIEN-CALLBACK, which has never been exported
946 from a public package, has been deleted. It is superseded by
947 SB-ALIEN:DEFINE-ALIEN-CALLABLE.
948 * minor incompatible change: compiler warnings are emitted on more
949 provably-erroneous code involving sequence functions on specialized
952 ** support getting thread IDs on FreeBSD. (thanks to Felix Lange)
953 ** faster function call sequence on arm64.
954 ** the built-in buffer size for file streams is increased to 8KB.
955 * enhancement: provide a restart for method lambda list mismatches that
956 fmakunbounds the generic function.
957 * enhancement: provide a USE-VALUE restart around type errors signalled from
959 * enhancement: when UPDATE-INSTANCE-FOR-DIFFERENT-CLASS (or -REDEFINED-)
960 undergoes a non-local exit, restore the instance to its original state.
961 (thanks to Michał phoe Herda)
962 * enhancement: the :SYNCHRONIZED keyword argument to MAKE-HASH-TABLE is no
964 * bug fix: fix an erroneous compiler tranform for (EXPT SINGLE-FLOAT
965 INTEGER). (lp#1958061, thanks to Vasily Postnicov)
966 * bug fix: disassembly of closures is more likely to show the relevant code
967 if more than one closure closes over the same environment. (lp#1956870,
968 reported by Michał phoe Herda)
969 * bug fix: RUN-PROGRAM with :IF-EXISTS :APPEND no longer signals an error if
970 the output does not exist. (lp#1958569, thanks to Ingo Krabbe)
971 * optimization: reorder basic blocks to have loop code fall through more
972 often. (thanks to Hayley Patton)
973 * optimization: sequences larger than the buffer size are written to streams
974 without going through a buffering stage. (reported by Philipp Marek)
976 changes in sbcl-2.2.0 relative to sbcl-2.1.11:
978 ** support for FreeBSD on 64-bit arm platforms has been added.
979 ** the :SB-LINKABLE-RUNTIME build-time feature is now supported on 32-bit
980 and 64-bit arm platforms, and on the FreeBSD operating system.
981 ** bug fix: correct encoding for vmovsd. (lp#1953483, reported by Marco
983 ** bug fix: support ABIv1 callbacks on big-endian ppc64. (lp#1900343,
984 thanks to Thomas Fitzsimmons)
985 ** bug fix: don't misuse mprotect() in dynamic space on Windows.
986 (lp#1955723, reported by 3b)
987 * enhancement: catch type mismatches for REPLACE, SUBSTITUTE, MAKE-ARRAY
988 with :INITIAL-CONTENTS.
989 * optimization: printing symbols is around 10% faster than previously.
990 * bug fix: don't use the current type of non-returning functions when
991 redefining them in another file. (lp#1953214, reported by Nicolas Hafner)
992 * bug fix: eliminate stack cleanups more conservatively. (lp#1954330,
993 reported by Daniel Kochmański)
994 * bug fix: check consistently in tests for the existence of VOPs.
995 (lp#1952896, reported by Sébastien Villemot)
997 changes in sbcl-2.1.11 relative to sbcl-2.1.10:
998 * minor incompatible change: *COMPILE-PRINT* now defaults to NIL. T gives
999 the old behavior of echoing top level forms. Users who want to see a
1000 report of the phases of compilation can use *COMPILE-PROGRESS* and the
1001 corresponding COMPILE-FILE :PROGRESS argument.
1002 * optimization: The compiler assignment-converts functions much more
1003 aggressively; local or non-entry block-compiled functions
1004 which always return to the same place are automatically converted into the
1005 equivalent loop or goto control structures.
1006 * enhancement: on x86-64 and ppc64 platforms, the system uses inline
1007 instructions rather than page protection to implement a store barrier for
1008 the garbage collector.
1009 * enhancement: improved reporting of code deletion notes.
1011 ** unbound-variable restarts for amd64 are now supported.
1012 ** bug fix: single-floats to foreign functions on 32-bit ARMel.
1013 (lp#1950080, reported by Sebastien Villemot)
1014 ** bug fix: opening files with names containing non-ASCII characters on
1015 Windows works better. (reported by Nikolay)
1016 ** bug fix: use fp_xsave to access the floating point flags and control
1017 word in Haiku signal contexts. (Thanks to Al Hoang)
1018 ** bug fix: complex single-float support on riscv64.
1019 ** optimization: support for accessing elements of &rest args directly on
1021 ** optimization: parse a /proc file rather than executing uname for
1022 SOFTWARE-VERSION on Linux
1023 * bug fix: fix crash from SB-COVER:RESET-COVERAGE. (lp#1950059, reported by
1026 changes in sbcl-2.1.10 relative to sbcl-2.1.9:
1027 * incompatible change: simd-pack without a specific element-type is no
1028 longer treated as containing integers. A type must be supplied for VOPs to
1029 work on such values.
1030 * minor incompatible change: the list form of the FUNCTION type specifier
1031 does not allow * as any argument type, but does allow * as a placeholder
1032 for wholly unspecified arguments when specifying the value(s) type.
1033 * minor incompatible change: the default (Lisp) toplevel option parser
1034 throws an error if it encounters an option which was intended to be used
1035 and removed by the C runtime. (lp#1945081, reported by Luke Gorrie)
1036 * new feature: there is now a defined interface for defining foreign
1037 callable functions, which can be used for passing callbacks to foreign
1038 functions or for calling Lisp code from the foreign world as a shared
1039 library (preliminary support). See the revised manual section "Calling
1040 into Lisp From C" for more details.
1041 * enhancement: arg-count mismatches in self-calls in defmethod are reported.
1042 (lp#1912436, reported by 3b)
1043 * enhancement: the SB-CLTL2 contrib now returns type information for
1044 generated structure accessors. (lp#1934859, reported by SATO shinichi)
1045 * optimization: code generation is improved for modular arithmetic involving
1048 ** x86-64 machine code emitter crash when attempting to assemble some
1049 vector instructions. (lp#1945975, thanks to Marco Heisig)
1050 ** conditional move instructions are now supported on arm64.
1051 ** a number of new peephole optimizations have been implemented on arm64.
1052 ** arm64 on Darwin now uses gcc-compatible thread-local storage.
1053 * bug fix: compiler notes are no longer emitted when compiling FORMATTER
1054 forms, including when implicitly triggered on a constant string argument
1055 to FORMAT. (lp#1946246, reported by SATO shinichi)
1056 * bug fix: a compiler error when attempting to compile a call to AREF with
1057 too many dimensions. (lp#1902985)
1058 * bug fix: harmonize the behaviour of SLOT-BOUNDP on non-standard-objects
1059 between the various ways in which it can be called. (lp#732229, reported
1061 * bug fix: FTRUNCATE and similar functions are now more careful about
1062 deriving facts about the sign of zero they might return. (lp#1732009,
1063 reported by Paul Dietz)
1065 changes in sbcl-2.1.9 relative to sbcl-2.1.8:
1066 * minor incompatible change: the experimental DEFCAS macro has been removed.
1067 * minor incompatible change: finalizing classes with slots with duplicate
1068 symbol-names will only emit a warning if either slot name is an exported
1069 symbol. (lp#1943559)
1071 ** the debugger is better able to display SIMD packs. (thanks to Marco
1073 ** fix a bug in zeroing YMM registers. (thanks to Marco Heisig)
1074 ** fix instruction definitions for SSE blend and shuffle vector
1075 instructions. (thanks to Marco Heisig)
1076 ** handle heap corruption exceptions in our exception handler on win64.
1077 ** improve WAIT-UNTIL-FD-USABLE on Windows, reducing busy-looping.
1078 (thanks to Fabio Almeida)
1079 * bug fix: EQUALP hash tables whose keys contain arrays containing floats should
1080 behave correctly. (lp#1942424, reported by Nicolas Neuss)
1082 changes in sbcl-2.1.8 relative to sbcl-2.1.7:
1083 * minor incompatible change: the experimental DEFINE-CAS-EXPANDER macro has
1085 * minor incompatible change: the hooks in *INIT-HOOKS* are called before
1086 starting the finalizer or other non-user threads. (thanks to Sean Whitton)
1088 ** many improvements to code generation on arm64.
1089 ** avoid slow forms of the bit test instructions BT, BTS, BTR on x86-64.
1090 ** fix a bug in loading large core files on the Apple M1/arm64. (thanks
1091 to Mayank Manjrekar)
1092 ** fix a bug in loading core loading on the Apple M1/arm64. (reported by
1094 * enhancement: the block-compiler is more robust to files with intermingled
1095 compile-time and load-time effects. The semantics of the block-compiler
1096 remain not-entirely ANSI compatible. (thanks to Sean Maher)
1097 * enhancement: (CAS SAP-REF-<x>) and CAS on alien integers is implemented on
1098 ppc64 and x86-64, working towards fixing lp#1894057
1099 * bug fix: fix OPEN-STREAM-P on streams closed by saving a core.
1100 (lp#1938433, reported by Guillaume LE VAILLANT)
1101 * bug fix: remove a spurious warning from COERCE. (lp#1920931, reported by
1103 * bug fix: remove a warning from inlining SET-EXCLUSIVE-OR. (lp#1936470,
1104 reported by Jerome Abela)
1106 changes in sbcl-2.1.7 relative to sbcl-2.1.6:
1107 * incompatible change: on certain platforms (currently just x86-64),
1108 dynamic-extent arrays specialized on character and numeric types and
1109 created without either :INITIAL-ELEMENT or :INITIAL-CONTENTS will reflect
1110 previous contents of the stack instead of #\null (or 0) in all elements.
1111 * minor incompatible change: SB-SPROF:START-PROFILING no longer silently
1112 does nothing if the clock is already running. It instead stop and restarts
1113 with the newly provided options, and warns.
1114 * minor incompatible change: the system attempts to refer to the supplied
1115 pathname in compiler diagnostics, if relevant, rather than the truename.
1116 * enhancement: new contrib module sb-graph producing graphical
1117 visualizations of Intermediate Representations of SBCL compilation data
1120 ** improved code generation for unary minus in modular contexts on arm64.
1121 ** make the disassembler annotations slightly more robust on arm64.
1122 ** release space back to the Operating System on Windows.
1123 ** improve the test for whether pages need to be committed on Windows.
1124 * optimization: the type of (LOOP ... COLLECT ...), and the type of COLLECT
1125 INTO variables, is derived as LIST. (lp#1934577, reported by SATO
1128 changes in sbcl-2.1.6 relative to sbcl-2.1.5:
1129 * minor incompatible change: COMPILE-FILE does not merge the input file's
1130 pathname-directory into the output path if :OUTPUT-FILE was specified
1131 and has a directory that is not :UNSPECIFIC.
1133 ** improvements to unwind code generation on arm64.
1134 ** on x86-64, accept three operands for vshufpd. (reported by Bela
1136 ** on x86-64, improvements to use of popcount
1137 ** improve exception handling on 64-bit Windows. (thanks to Luis Borges
1139 * bug fix: allow use of macros with improper argument list. (lp#1929623,
1140 thanks to Sean Maher)
1141 * bug fix: COERCE no longer attempts to guess what the user meant if they
1142 provide a type specifier of a union of types other than STRING.
1144 * bug fix: print a single trailing zero after the decimal point for FORMAT
1145 ~E if there are no digits remaining to be printed and the width allows it.
1148 changes in sbcl-2.1.5 relative to sbcl-2.1.4:
1149 * minor incompatible change: on x86-64, the backend instruction encoders for
1150 movzx and for string opcodes have changed their semantics.
1152 ** compatibility: support the latest MinGW on x86. (lp#1923325, thanks to
1154 ** bug fix: on x86-64, fix instruction encoding for TEST on RIP-relative
1155 addresses. (lp#1925808, reported by Shinmera on #sbcl, thanks also to
1157 ** bug fix: on x86-64, loading all-1s into an AVX2 register no longer
1158 causes an error. (lp#1928516, thanks to Marco Heisig)
1159 ** bug fix: on arm64, improve disassembly of ADD with constant 0 as MOV
1160 ** enhancement: on arm64, support debugger commands RETURN-FROM-FRAME and
1161 RESTART-FRAME more efficiently.
1162 ** enhancement: on x86-64, add support for vshuf* AVX2 instructions.
1163 (reported by Bela Pecsek)
1164 ** optimization: faster function calls on arm64.
1165 ** optimization: (SETF SBIT) is faster on x86-64.
1166 * bug fix: INTEGER-DECODE-FLOAT was computing the wrong answer for denormal
1167 double floats. (lp#1926383, reported by Stavros Macrakis)
1168 * bug fix: RANDOM on a floating point argument now does not cons. (reported
1170 * bug fix: fix a compiler crash in type derivation of LOGTEST. (lp#1928243)
1171 * bug fix: fix a compiler failure when a declared function type contains a
1172 literal structure with a valid MAKE-LOAD-FORM method. (lp#1929160, thanks
1173 to Yurii Hryhorenko)
1174 * optimization: FBOUNDP on a constant symbol is now faster.
1175 * optimization: file compilation now produces smaller fasls for files which
1176 reference package literals.
1177 * optimization: derive the type of calls to FLOAT-SIGN.
1179 changes in sbcl-2.1.4 relative to sbcl-2.1.3:
1181 ** work around address-space randomization causing instability on new
1182 versions of MinGW. (lp#1921141)
1183 * bug fix: RANDOM on floats returns values strictly less than the float
1185 * bug fix: compiler error on x86-64 resulting from attempting to zero a
1186 memory location with xor. (reported by Eric Marsden)
1187 * optimization: extended loops updating iteration variables with THEN can
1188 perform specialized arithmetic for those updates.
1189 * optimization: in some cases, the jump table resulting from a compilation
1190 of TYPECASE is simpler.
1191 * optimization: on x86-64, IF BOUNDP followed by SYMBOL-VALUE can elide some
1192 memory loads and tests.
1194 changes in sbcl-2.1.3 relative to sbcl-2.1.2:
1195 * minor incompatible change: support for the :SB-SAFEPOINT-STRICTLY,
1196 :SB-THRUPTION, and :SB-WTIMER build features has been removed
1198 ** support for :SB-CORE-COMPRESSION on Darwin/ARM64
1199 ** support ARM v8.1 atomic and compare-and-swap instructions
1200 ** x86, x86-64: microoptimizations in multiple type-checking routines
1201 * bug fix: structures and conditions are now TYPEP all classes in the class
1202 precedence list of their class. (reported by Luis Oliveira)
1203 * bug fix: derivation of the result type from subtraction sometimes
1204 erroneously excluded zero. (lp#1916895)
1205 * bug fix: reduce the number of places where the system permissively accepts
1206 the symbol * as a type specifier where it should not be accepted.
1208 * bug fix: the code-walker used by the system's implementation of CLOS can
1209 handle defuns declared inline. (reported by Don Cohen)
1210 * optimization: EQUALP on specialized vectors and arrays is faster.
1211 * optimization: support routines for EQUALP hash tables generate less garbage.
1213 changes in sbcl-2.1.2 relative to sbcl-2.1.1:
1215 ** support for ARM64 macOS;
1216 ** improvement in coverage mark implementation on non-x86oid backends,
1217 approaching the existing x86oid support;
1218 ** more empirically-robust retrieval of the program counter from illegal
1219 instruction traps on SPARC;
1220 ** retain fewer dead objects when saving cores with precise collectors.
1221 * incompatible change: MAP-ALL-SAMPLES and MAP-TRACE-SAMPLES
1222 are no longer present in the SB-SPROF contrib module.
1223 * minor incompatible change: SB-SPROF:WITH-PROFILING defaults to all
1224 threads. SB-SPROF:START-PROFILING no longer accepts a :SAMPLING keyword.
1225 * enhancement: the sb-introspect contrib now supports finding the lambda
1226 lists of method combinations. (thanks to Didier Verna)
1227 * enhancement: short-form DEFSETF now stores a source-location.
1228 * bug fix: canonical unions of CONS types were being incorrectly computed.
1229 (lp#1912863, reported by James Kalenius)
1230 * bug fix: better understanding of array simplicity (or otherwise) in the
1231 type system. (lp#1903241)
1232 * bug fix: unions of rational and integer types now have a single canonical
1233 form, allowing more correct reasoning about them in the type system.
1234 * bug fix: less likely to overclaim certainty about type equality of union
1236 * bug fix: HANDLER-BIND evaluates the forms producing handler functions only
1237 once. (lp#1916302, reported by Christophe Junke)
1238 * optimization: FIND on constant sequences can be compiled into a jump
1239 table, in a similar manner to POSITION
1240 * optimization: the compiler's awareness of numeric contagion rules for
1241 operations on pairs of floating point numbers is improved. (lp#1914094,
1242 thanks to Andrew Berkley)
1244 changes in sbcl-2.1.1 relative to sbcl-2.1.0:
1246 ** restore non-threaded NetBSD builds;
1247 ** adjust how the finalizer thread is started; (lp#1906571, lp#1907872)
1248 ** fix the encoding of PEXTR on x86-64;
1249 * minor incompatible change: emit warnings for list iteration forms when the
1250 object being iterated over is known not to be a list. (lp#1908819,
1251 reported by Michael Fiano)
1252 * bug fix: detect 2 or 1 as an invalid number of arguments passed to
1253 optimized slot reading or writing effective method respectively.
1254 (lp#1909659, reported by Michal Herda)
1255 * bug fix: division by zero errors were in some cases not being signalled.
1256 (lp#1910098, reported by il71)
1257 * bug fix: erroneous coercions in the type system could lose precision.
1259 * bug fix: literal (read-time evaluated) NaNs in source code no longer cause
1260 compiler crashes. (lp#1909881, reported by Michal Herda)
1261 * bug fix: detect more erroneous syntax in method bodies. (lp#1912362,
1262 reported by Paul M. Rodriguez)
1263 * optimization: the compiler's understanding of EXPT is improved, reducing
1264 the introduction of COMPLEX types. (lp#1908830, reported by Michael Fiano)
1265 * optimization: the compiler is better at computing numeric contagion when
1266 (COMPLEX FLOAT) types are involved.
1267 * micro-optimizations:
1268 ** moving from slightly-bigger-than-fixnum ranges is more efficient on x86-64;
1269 ** encode character comparisons with smaller operands on x86-64;
1270 ** truncating (and related operations) on floats can be inlined in more
1271 cases on 64-bit platforms;
1272 ** rounding can use specialized instructions on ARM64 and on x86-64 when
1275 changes in sbcl-2.1.0 relative to sbcl-2.0.11:
1276 * minor incompatible change: the MAKE-EA internal function, used in the
1277 assembler, has been removed (affecting some libraries defining their own
1279 * new feature: SB-EXT:PRIMITIVE-OBJECT-SIZE can be used to interrogate the
1280 low-level size in memory of objects. (lp#1636910, reported by anquegi)
1282 ** pass required -std argument to the compiler on Solaris (lp#1885751,
1283 thanks to Jesse Off)
1284 ** better treatment of non-ASCII program arguments on Windows (lp#1907970,
1285 reported by Timofei Shatrov)
1286 ** implement the improved TYPEP with structure types on all other
1287 supported platforms (32-bit PowerPC, ARM, ARM64, MIPS, SPARC, RISC-V)
1288 * enhancement: stream dispatch (to vanilla ANSI / Gray / Simple variants) has
1289 been rewritten and optimized, fixing a number of bugs including:
1290 ** performance of WRITE-SEQUENCE on composite streams (lp#309136)
1291 ** handling of CLOSE on SYNONYM-STREAM (lp#1904257, reported by Richard M
1293 ** handling of CLOSE on BROADCAST-STREAM with no components (lp#1904722,
1294 reported by Richard M Kreuter)
1295 ** loading SB-SIMPLE-STREAMS breaks functionality of other stream classes
1297 ** some excessive consing in READ-LINE
1298 * enhancements related to RUN-PROGRAM:
1299 ** improved the documentation related to the ARGS argument (lp#806733,
1300 reported by mon_key)
1301 ** added a PRESERVE-FDS argument
1302 * bug fix: ensure that TYPE-OF returns something even on internal instances,
1303 which may become visible in the debugger. (lp#1908261, reported by
1305 * bug fix: iteration variables established by standard forms should always
1306 be considered used by the compiler. (lp#719585, reported by Roman
1308 * bug fix: don't allow compiler transformations to weaken the requirement
1309 against extended (list-form) function names in FUNCALL and related
1310 operators. (lp#310069)
1311 * bug fix: improve automated version number generation in branches.
1312 (lp#897867, thanks to Martin Cracauer)
1313 * bug fix: add possibly-spurious futex wakes when unwinding from a call to
1314 futex-wait, to avoid deadlocks from interrupted waits. (lp#1038034)
1315 * bug fixes in the compiler:
1316 ** error on malformed DESTRUCTURING-BIND (lp#1738638)
1317 ** error on malformed SPECIAL declaration (lp#1740756)
1318 ** error from use of VALUES type in COERCE (lp#1887712)
1319 ** enforcement of FTYPE types involving &OPTIONAL (lp#1903932)
1320 ** checking for proper-list-ness before applying transforms (lp#1905512)
1321 ** compilation of LAMBDA form including a malformed DEFUN (lp#1906056)
1322 ** memory fault from VALUES-related handling in high DEBUG code
1324 ** transforms handle explicit NIL arguments in :END arguments to SEARCH
1326 * bug fix: return COMPILED-FUNCTION for TYPE-OF on compiled functions.
1328 * some bugs were also closed in this release cycle as obsolete, having been
1329 fixed by the passage of time or other change in the environment:
1330 ** floating point error reporting on OS X (lp#309454)
1331 ** load-shared-library not working from non-main threads on OS X (lp#592425)
1332 * optimization: CONSTANTLY on constant arguments returns a more efficient
1333 function. (lp#1852585)
1334 * optimization: perform fewer Lisp/Alien representation conversions in
1336 * optimization: perform fewer redundant widetag tests when doing type tests
1337 of complicated union types.
1338 * optimization: signed-integer division on machine-word sized operands is
1339 now implemented using multiplication, affecting TRUNCATE, FLOOR, CEILING,
1340 MOD and REM. (This optimization was already performed on unsigned-integer
1343 changes in sbcl-2.0.11 relative to sbcl-2.0.10:
1344 * minor incompatible change: (ARRAY NIL (*)) is not a subtype of STRING,
1345 as is consistent with a majority of maintained CL implementations.
1346 * minor incompatible change: ARRAY-RANK-LIMIT is decreased from 65529 to 256
1347 * optimization: TYPEP on structure types is faster and more compact on
1349 * optimization: LOGCOUNT is faster on arm64.
1350 * optimization: SIGNUM can be inlined if its argument type is known.
1352 * bug fix: compiler crash in tail call handling. (lp#1903938)
1353 * bug fix: crash in traceroot. (lp#1903419, reported by Michal Herda)
1354 * bug fix: DESCRIBE called with a string as second argument no longer mutates
1355 that string. (lp#1903901, reported by Michal Herda)
1356 * bug fix: stack clobbering by 256-bit SIMD packs on x86-64. (lp#1901685,
1357 reported by Marco Heisig)
1359 changes in sbcl-2.0.10 relative to sbcl-2.0.9:
1360 * minor incompatible change: the funarg given to SB-SPROF:MAP-TRACES
1361 does not receive a wallclock time with each trace.
1362 * minor incompatible change: INTERNAL-TIME-UNITS-PER-SECOND has been
1363 increased to 10^6 on 64-bit architectures.
1364 * minor incompatible change: SIGPIPE is ignored by default again. (lp#1897624)
1365 * minor incompatible change: the system code compiled under the
1366 :LINKAGE-TABLE feature is now unconditionally compiled in, and the
1367 corresponding entry in *FEATURES* has been removed.
1368 * enhancement: style-warnings are issued for variables which have an
1369 assignment but no "for-value reference" (per CLHS glossary entry)
1370 * bug fix: SB-CLTL2:MACROEXPAND-ALL did not expand MULTIPLE-VALUE-BIND
1371 and MULTIPLE-VALUE-SETQ
1372 * bug fix: CPUID-based feature detection had an index/mask confusion
1374 * bug fix: fix a deadlock on Windows (lp#1896802)
1375 * bug fix: eliminate type errors when wall clocks go back (lp#1028026,
1377 * bug fix: fix EOF handling in read-char-no-hang on concatenenated streams
1378 (lp#690408, reported by Willem Broekema)
1379 * bug fix: fix MAP-INTO on extended sequences (lp#1855375, thanks to James
1381 * bug fix: SB-GMP can now raise -1, 0 and 1 to the power of a bignum.
1382 (thanks to Aaron Chen)
1383 * bug fixes in tests:
1384 ** add a C function declaration (lp#1897627, thanks to Bob Felts)
1385 ** parse vmmap output more liberally (lp#1897722, reported by Bob Felts)
1387 changes in sbcl-2.0.9 relative to sbcl-2.0.8:
1388 * incompatible change: HPPA and DEC Alpha architecture
1389 support has been removed.
1390 * minor incompatible change: the compiler signals a warning at
1391 compile-time when an initform of T, NIL or 0 does not match a
1392 STANDARD-CLASS slot's declared type.
1393 * minor incompatible change: the runtime no longer uses SIGPIPE internally,
1394 so the signal is deliverable to user code as is customary. Ignoring the
1395 signal - in lieu of the OS default of process termination - is obtainable
1396 via (SB-SYS:ENABLE-INTERRUPT SB-UNIX:SIGPIPE :IGNORE).
1398 ** a number of obsolete portability layers (particularly on the Windows
1399 platform) have been removed in favour of direct calling of the native
1401 ** RUN-PROGRAM now accepts a :WINDOW argument to control whether a
1402 subprocess window should be displayed. (Thanks to Luis Borges de
1404 ** the use of futexes implied by :SB-FUTEX is now implemented on FreeBSD.
1405 * bug fix: SB-SPROF can distinguish between SBCL-internal assembly routines.
1406 * bug fix: SB-SPROF has better output in its reports for anonymous
1408 * optimization: CALL-NEXT-METHOD with supplied arguments in required
1409 positions is now faster if the supplied arguments are EQL to the original
1412 changes in sbcl-2.0.8 relative to sbcl-2.0.7:
1414 ** added support for NetBSD/ARM64;
1415 ** threads on Linux now have OS-visible names;
1416 ** removed unnecessary emulation of pthread functions on Windows;
1417 ** work around a sigwait() bug on Mac OS X;
1418 ** allow safepoint build on Mac OS X, though it probably doesn't
1419 work very well (reported by Chris Wagner, lp#1382811)
1420 ** removed stub support for HPUX.
1421 * optimization: SB-THREAD:MAKE-THREAD is faster on most platforms.
1422 * optimization: faster RATIONAL when the result is a RATIO.
1423 * optimization: improved cross-type comparisons (float/ratio/bignum).
1424 * bug fix: EQUALP on pathnames was wrong
1425 * bug fixes: fix compiler issues in:
1426 ** COUNT (lp#1889391)
1427 ** VECTOR-LENGTH (lp#1888919)
1428 ** constant-folding (lp#1888384)
1429 ** FIND and POSITION (lp#1887316)
1431 changes in sbcl-2.0.7 relative to sbcl-2.0.6:
1432 * minor incompatible change: SB-THREAD:THREAD-OS-TID returns NIL for
1433 a thread which has exited.
1434 * minor incompatible change: OPEN no longer calls TRUENAME implicitly
1435 on a string filespec prior to issuing an open() system call.
1436 * minor incompatible change: PATHNAME is no longer a STRUCTURE-OBJECT.
1437 * documentation: HASH-FUNCTION is a function designator. (lp#1888028,
1438 reported by Jacek Zlydach)
1439 * bug fix: eliminated a potential garbage-collector deadlock
1440 when linking with TCMalloc.
1441 * bug fix: foreign threads (those not made by SB-THREAD:MAKE-THREAD)
1442 can not crash with a "GC_PENDING, but why?" error when returning
1443 back from Lisp into the foreign caller.
1444 * bug fix: sb-fasteval crashed trying to install a JIT-compiled
1445 DEFSTRUCT accessor in a locked package.
1446 * bug fix: removed misuse of putwc() which caused stdio streams
1448 * bug fix: the "maximum interrupt nesting depth exceeded" error
1449 generated in the C runtime is significantly less likely to occur.
1450 * bug fix: sb-sprof should no longer segfault from calling pthread_kill()
1451 on a nonexistent thread.
1452 * bug fix: a portability issue arising from various build hosts
1453 (lp#1886255, reported by Pierre Neidhardt)
1454 * bug fix: spurious compiler warnings from REDUCE with :INITIAL-VALUE.
1455 (lp#1885515, reported by Michael South)
1456 * bug fix: an inconsistency between class hierarchies and the type system
1457 under some circumstances involving redefinition. (lp#1886397, reported by
1459 * bug fix: the USE-VALUE restart for OPEN on non-existent files is more
1460 likely to function as expected. (lp#1886587)
1461 * bug fix: various invalid inputs to ROTATE-BYTE no longer cause compiler
1462 errors. (lp#1887164, lp#1888152)
1463 * optimization: PPC64 on linux uses the __thread annotation on C variables
1464 in preference to pthread_setspecific() and pthread_getspecific().
1466 changes in sbcl-2.0.6 relative to sbcl-2.0.5:
1467 * planned incompatible change: the defined symbols in the Metaobject
1468 Protocol, currently accessible from both SB-MOP and SB-PCL packages, will
1469 in a later release be no longer exported from SB-PCL.
1471 ** better support for dynamic-extent on the SPARC architecture.
1472 ** bug fix for loading very large core files.
1473 ** bug fix for logior and logxor on PPC64.
1474 * enhancement: EQUALP on structure instances uses code specialized
1475 to each structure type, inlining comparison of non-pointer slots.
1476 * enhancement: some standard operators, such as WITH-OUTPUT-TO-STRING and
1477 CHANGE-CLASS, have been adapted to use dynamic-extent temporary objects,
1478 and so cons less garbage on the heap.
1479 * enhancement: read tables are more space- and speed efficient
1480 * bug fix: stream conditions with dynamic-extent streams have the stream
1481 replaced by a stub. (reported by Matt Kaufmann)
1482 * bug fix: garbage collections triggered from foreign callbacks crashed.
1483 (lp#1884403, reported by Andrew Kent)
1484 * bug fix: compiler failure in compiling MAKE-LIST. (lp#1881349)
1485 * bug fix: using the debugger from frames with calls to functions with
1486 unsupplied optional arguments is less likely to cause heap corruption.
1489 changes in sbcl-2.0.5 relative to sbcl-2.0.4:
1491 ** experimental support for ARM32 and ARM64 on OpenBSD
1492 ** better musl libc support. (lp#1768368, thanks to Eric Timmons)
1493 ** more correct use of futexes on 64-bit Linux. (lp#1876825, reported by
1495 ** restore building on current Solaris. (lp#1881393, thanks to Shawn
1497 * enhancement: CMUCL-style START-BLOCK and END-BLOCK declarations are now
1498 supported for block compiling forms at a sub-file granularity.
1499 * enhancement: IPv6 support in sb-bsd-sockets is enabled on Windows.
1500 * minor change: *compile-print* now makes it more clear what block
1501 compilation is actually doing. The default output is now slightly more
1502 verbose as a result.
1503 * bug fix: number keys in EQUALP hash tables are correctly hashed.
1504 (lp#1878653, reported by Syll)
1505 * bug fix: EQness is better preserved given partial sharing of list contents
1506 in the file compiler. (lp#1583753, reported by Denis Budyak)
1507 * bug fix: the peephole pass neglected to preserve jump table labels.
1509 * bug fix: fix compiler crash in block compilation merging of toplevel
1510 lambdas. (lp#1865336, reported by il71)
1511 * bug fix: sb-introspect's function-lambda-arglist is better at extracting
1512 default values of nested macro arguments. (lp#1876194)
1513 * bug fix: RESTART-BIND's body is an implicit progn, and so does not accept
1514 declarations. (lp#1876303, reported by Michal Herda)
1515 * optimization: EQUAL hash tables with keys involving structure-objects will
1516 have fewer systematic collisions.
1518 changes in sbcl-2.0.4 relative to sbcl-2.0.3:
1520 ** 32-bit RISC-V is now fully supported. Unlike other ports, its backend
1521 is entirely shared with 64-bit RISC-V.
1522 ** native threads are now supported on RISC-V.
1523 ** fix and add some x86-64 vector instructions. (reported by Shubhamkar
1525 ** improve pointer representation on ppc64 for low-level performance
1527 ** threads are more stable on big-endian ppc64
1528 * enhancement: forward-referenced type tests can now be open-coded by using
1529 block compilation. The result is that mutually referential defstructs are
1530 now efficiently compiled in block compilation mode, superseding a lighter
1531 mechanism that worked in fewer contexts. However, that lighter mechanism
1532 has been removed, so for now, users who want to efficiently compile
1533 mutually referential defstructs must explicitly opt-in using block
1535 * bug fix: defstructs with empty initforms in the sbcl source are now
1536 explicitly intiialized with NIL, as that is undefined behavior under
1537 ANSI. This helps cross compilation hosts which do not implicitly
1538 initialize empty initform slots to NIL. (Thanks to Karsten Poeck)
1539 * bug fix: backtracing through assembly routines now works properly on
1541 * bug fix: ASH no longer gets miscompiled in certain edge cases on RISC-V.
1542 * bug fix: &MORE args have been slightly optimized and are more correct on
1544 * bug fix: unused local functions with &REST/&KEY/&OPTIONAL now also issue a
1546 * bug fix: APPLY on a large list ("large" being in excess of 2k to 16k items
1547 depending on the platform) can no longer crash the gencgc collector.
1548 * bug fix: sb-concurrency FRLOCK algorithm has been corrected. (lp#1087955)
1549 * bug fix: block compilation now respects inlining declarations better (like
1551 * optimization: hashing of structures with raw slots for EQUALP hash tables
1554 changes in sbcl-2.0.3 relative to sbcl-2.0.2:
1555 * incompatible change: the external format now defaults to UTF-8 and is not
1556 affected by LANG. SB-EXT:*DEFAULT-EXTERNAL-FORMAT* is now the only way to
1558 * minor incompatible change: the undocumented :EPHEMERAL argument to
1559 MAKE-THREAD has been removed.
1560 * minor incompatible change: DECLARE type testing of structure types when
1561 the SAFETY optimization quality is less than SPEED (but greater than 0) is
1562 precise, rather than merely testing that an object is a (general)
1565 ** respect sunos platform assembler flag handling
1566 ** riscv architecture can be detected during the build
1567 ** enabled the sb-dynamic-core feature on riscv, sparc, and made it
1568 unconditional everywhere
1569 ** cheneygc is an option for arm and arm64
1570 * enhancement: the installed sbcl executable tree can be renamed or moved
1571 without risk of incorrectly referencing a '.core' file from an obsolete
1573 * optimization: transform (values-list (list one-item)) to (values one-item)
1574 as multiple items were already recognized.
1576 changes in sbcl-2.0.2 relative to sbcl-2.0.1:
1577 * new feature: CMUCL-style block compilation support has been added,
1578 allowing whole program optimization. It has been documented in a new
1579 section of the manual entitled "Advanced Compiler Use and Efficiency
1580 Hints". In particular, users of block compilation will find a large
1581 speedup for numerical code, as functions which call or return floating
1582 point values will keep everything unboxed.
1583 * bug fix: in CHANGE-CLASS, handle non-standard slot-value-using-class for
1584 :INSTANCE and :CLASS slots better. (reported by Shinmera on #sbcl)
1585 * bug fix: REMHASH in an EQUAL or EQUALP hash-table works correctly on a
1586 key for which EQUAL (respectively EQUALP) is reduced to EQ. (lp#1865094)
1587 * bug fix: do not emit a warning for DEFCLASS slots with mismatched :TYPE
1588 and :INITFORM when the class has a non-standard metaclass.
1589 * bug fix: DISASSEMBLE on SPARC is less likely to spuriously annotate code
1590 sequences as error traps.
1592 changes in sbcl-2.0.1 relative to sbcl-2.0.0:
1593 * minor incompatible change: some symbols have been removed from *FEATURES*
1594 based on a determination of which should be impermissible to examine
1595 via #+ and #- reader macros in user-written code.
1596 * optimization: DEFSTRUCT copiers including COPY-STRUCTURE are able to
1597 stack-allocate the result when declared dynamic-extent.
1598 * bug fix: loop analysis code more robust. In particular, loop nesting depth
1599 is computed more accurately, improving the register allocation around
1602 changes in sbcl-2.0.0 relative to sbcl-1.5.9:
1603 * minor incompatible change: heap relocation now works on Windows. Since
1604 this feature now works on all platforms, it is enabled unconditionally and
1605 the :RELOCATABLE-HEAP symbol no longer appears on *FEATURES* in any
1606 builds. (Thanks to Luís Borges de Oliveira)
1607 * enhancement: malformed type specifiers and occurrences of deprecated types
1608 in :TYPE initargs of DEFCLASS and DEFINE-CONDITION slot specifications
1609 are detected and result in compile-time errors and warnings respectively.
1610 * enhancement: parallel contrib building, controlled by SBCL_MAKE_JOBS=-jX
1611 the same as for the C runtime.
1612 * bug fix: add a walker template for WITH-SOURCE-FORM.
1613 * bug fix: start the summary of a compilation unit on a fresh line. (Thanks
1615 * bug fix: on Windows, PARSE-NATIVE-NAMESTRING produces an absolute
1616 directory when parsing a bare drive name and :AS-DIRECTORY is specified.
1617 (Thanks to Luís Borges de Oliveira)
1618 * bug fix: on RISCV, the runtime is linked with libz if the core compression
1619 feature is requested. (Thanks to Andreas Schwab)
1620 * bug fix: ADJOIN using an EQL test and a KEY function only transforms into
1621 an EQ test if the key function returns values for which EQ and EQL are
1622 guaranteed to be the same.
1624 ** the instruction sequence for multiple-value calls is more
1625 efficient on x86-64.
1626 ** the direction flag is now unused on x86 and x86-64 when handling
1627 an unknown number of return values. (Thanks to Fanael Linithien)
1628 ** the x86-64 backend is better able to use memory operands for arithmetic
1630 ** compilation of TYPECASE to a jump table is enabled when all the types
1631 being tested are frozen.
1632 ** compilation of CASE and ECASE into a jump table has been implemented on
1633 32- and 64-bit powerpc platforms.
1634 ** the implementation of Unicode normalization has been sped up.
1635 ** pretty-printing dispatch on conses is faster, particularly with the
1636 standard pretty-print dispatch table. Deeply-nested forms should also
1637 pretty-print faster.
1639 changes in sbcl-1.5.9 relative to sbcl-1.5.8:
1641 ** a message intended to be more helpful will be displayed for an mmap
1643 ** the soft-float ABI on ARM32 is better supported, in particular in
1644 returning double floats from calls into C.
1646 ** CASE and ECASE with symbols as keys may be optimized into a vector
1647 lookup if all result forms are quoted or self-evaluating objects.
1648 ** CASE and ECASE can be optimized into a jump table on the x86[-64]
1649 backends with arbitrary result forms provided that the clause keys
1650 are either all fixnums, all characters, or all symbols.
1651 ** a number of forms are converted to use CASE in circumstances where that
1652 makes sense, including calls to POSITION, MEMQ and MEMBER, and TYPECASE
1653 where the types are MEMBER/EQL types.
1654 ** POSITION of a variable symbol in a constant sequence of symbols is
1655 converted to CASE and thence to a jump table.
1656 ** TYPECASE of a variable where the clauses are member types is converted
1657 to CASE and thence to a jump table.
1658 ** a number of slow instructions are no longer used on x86 and x86-64
1659 machines. (Thanks to Fanael Linithien)
1660 ** the compiler is better at tracking the implications of branches after
1662 ** parsing &KEY lists is slightly less register-intensive.
1663 ** a pattern-based peephole optimizer pass has been added, running some
1664 simple transformations on the x86-64 backend.
1665 * enhancements: more thorough compile-time type checking of various
1666 initforms (defclass, &key, defstruct).
1667 * bug fix: unions of complicated CONS types are less likely to cause an
1668 infinite loop. (lp#1799719)
1669 * bug fix: DESCRIBE on functions not named by extended function designators
1670 no longer signals a type error. (lp#1850531, reported by Michal Herda)
1672 changes in sbcl-1.5.8 relative to sbcl-1.5.7:
1674 ** support for Mac OS X Catalina
1675 ** improvements in interoperability with C code compiled with memory
1676 sanitization options
1677 ** libsbcl.so links to zlib when sb-core-compression is enabled.
1678 (lp#1845763, thanks to Juan M. Bello-Rivas)
1679 ** workarounds for BSD issues around mmap() and pthread_attr_setstack().
1681 ** support SSE for bzero if available on OpenBSD
1683 ** improved type understanding and translations for division operators
1684 (including TRUNCATE, GCD, LCM).
1685 ** sequential comparisons and branches can elide intermediate comparisons.
1687 ** convert EQUAL and EQUALP to EQL if either of the arguments is a type
1688 for which the structural equality predicate is identical to the simpler
1689 equality check. (lp#1848583)
1690 ** internal operators implementing string comparisons produce
1691 simpler-to-consume values. (lp#1848776)
1692 * bug fix: inspecting adjustable arrays and vectors with fill pointers works
1693 better. (lp#1846191, reported by Yves Pagani)
1695 changes in sbcl-1.5.7 relative to sbcl-1.5.6:
1697 ** many bug fixes to the experimental 64-bit PowerPC/Linux port, to the
1698 extent that the little-endian variant passes all applicable tests in
1699 the regression test suite; the big-endian variant currently has some
1701 ** experimental support for sb-threads on 64-bit PowerPC/Linux
1702 ** support threads on x86-64 Sun OS (lp#1841280)
1703 ** handle PAX restrictions on mprotect() on NetBSD
1704 ** experimental support for HaikuOS
1705 ** the runtime is built as a position-independent executable by default on
1706 x86-64 Linux and x86-64 Darwin
1707 * fixes and enhancements related to Unicode:
1708 ** update of the data files to Unicode 8.0
1709 ** fix a bug in the implementation of the Unicode line breaking algorithm
1710 regarding hebrew letters and hyphens
1711 * enhancement: add a restart to OPEN with :IF-EXISTS :ERROR to allow
1712 re-opening with :APPEND. (lp#806398, reported by Tobias Rittweiler)
1713 * bug fix: compiler optimizations on SEARCH with :FROM-END T didn't account
1714 for the empty sequence. (lp#1844821)
1715 * bug fix: handle SETF of nested empty VALUES correctly. (lp#1806478)
1716 * optimization: FLOOR and CEILING on rationals are simpler, and the
1717 compiler's understanding of them is better.
1719 changes in sbcl-1.5.6 relative to sbcl-1.5.5:
1721 ** experimental support for 64-bit PowerPC running Linux (extending Brian
1722 Bokser's work from 2018), on both the v1 and v2 ABIs
1723 * new feature: SB-EXT:SEARCH-ROOTS discovers paths from live objects to the
1724 roots keeping them alive.
1725 * enhancement: string output streams created with :ELEMENT-TYPE 'BASE-CHAR
1726 use internal buffers of BASE-STRING instead of UCS-4 strings restricted
1727 to the ASCII range, yielding a theoretical 4:1 space reduction.
1728 * optimization: improved make-array type derivation for multi-dimensional
1729 arrays. (lp#1838442)
1730 * bug fix: compliant redefinition of classes whose previous definition
1731 caused argument mismatch errors does not generate errors any more.
1732 (lp#1840595, reported by 3b on #sbcl)
1733 * bug fixes for issues caught by the random tester:
1734 ** never derive the type of TRUNCATE on arbitrary numbers as the empty
1736 ** provide out-of-line definitions for internal machinery related to
1737 FLOAT-SIGN. (lp#1838337)
1738 ** include COMPLEX in the derived type of SIGNUM when appropriate.
1740 ** more correct internal type testing for function types. (lp#1838808,
1741 lp#1838888, lp#1838986)
1742 ** don't assume that all objects of type (NOT SIMPLE-ARRAY) have an array
1743 header. (lp#1838827)
1744 ** recognize that PHASE on non-positive numbers can return 0 as well as PI.
1747 changes in sbcl-1.5.5 relative to sbcl-1.5.4:
1749 ** SunOS: bug reports and patches from Richard Lowe in sb-posix tests
1750 (lp#1837495), sb-concurrency tests (lp#1837817), unencapsulated tracing
1751 (lp#1837307), float registers in interrupt contexts (lp#1837168)
1752 * bug fix: do not generate version.lisp-expr from git describe if the git
1753 repository is not sbcl's own. (lp#1836663, thanks to Richard Lowe)
1754 * bug fix: compiler crash related to VALUES-LIST on a &REST argument in some
1755 contexts. (lp#1836096, reported by Samuel Jimenez)
1756 * bug fix: compiler hang related to constraint propagation. (lp#1835599,
1757 reported by Mark Cox)
1758 * bug fix: the inspector showed the wrong array element type. (lp#1835934,
1759 reported by Richard M Kreuter)
1760 * optimization: numerous improvements to hash table access and rehashing
1761 * optimization: ASSERT compiles into substantially more compact code.
1764 changes in sbcl-1.5.4 relative to sbcl-1.5.3:
1765 * minor incompatible change: hash tables on 64-bit machines consume roughly
1766 20% less memory but can only grow to hold 2^31 entries (theoretically)
1767 due to use of 31-bit indices internally.
1769 ** RISC-V: improve rotate-byte support (thanks to Philipp Matthias
1771 * bug fix: the system reasons more correctly regarding the array rank of
1772 complicated array types. (reported by Bart Botta)
1773 * bug fix: DOUBLE-FLOAT-P never gets weaked to NUMBERP. (reported by Bart
1775 * enhancement: the regression test suite can now benefit from paralellism,
1776 completing much faster when enough compute power is available.
1777 * optimization: readtables with non-base-char dispatch characters are less
1779 * optimization: INTERN performs fewer redundant type checks.
1780 * optimization: tests for PATHNAMEP and STRUCTURE-OBJECT (including in
1781 computing hash functions) are faster.
1783 changes in sbcl-1.5.3 relative to sbcl-1.5.2:
1785 ** RISC-V: numerous bug fixes and improvements
1786 ** all platforms: better run-program performance when used from multiple
1788 * enhancement: (declaim (optimize (debug 2))) ensures compilation of
1789 top-level forms, providing better debugging for simple forms that are
1790 otherwise "byte-code interpreted" when compiled into FASLs.
1791 * bug fix: use of finalizers could in rare circumstances cause a crash in
1792 the garbage collector.
1793 * bug fix: show extended function designators, e.g. (setf foo), in the
1795 * optimization: reduced overhead of calling NTH/NTHCDR.
1796 * optimization: improved FLOAT-SIGN on DOUBLE-FLOATs on 64-bit platforms
1798 changes in sbcl-1.5.2 relative to sbcl-1.5.1:
1799 * enhancement: RISC-V support with the generational garbage collector.
1800 * enhancement: command-line option "--tls-limit" can be used to alter the
1801 maximum number of thread-local symbols from its default of 4096.
1802 * enhancement: better muffling of redefinition and lambda-list warnings
1804 ** OS X: use Grand Central Dispatch semaphores, rather than Mach semaphores
1805 ** Windows: remove non-functional definition of make-listener-thread
1806 * new feature: decimal reader syntax for rationals, using the R exponent
1807 marker and/or *READ-DEFAULT-FLOAT-FORMAT* of RATIONAL.
1808 * optimization: various Unicode tables have been packed more efficiently
1810 changes in sbcl-1.5.1 relative to sbcl-1.5.0:
1811 * enhancement: restarts for missing package errors.
1812 * optimization: FIND-PACKAGE should be faster even when run in the context
1813 of a package with local package-nicknames.
1814 * optimization: fix TRUNCATE deftransform's results to have well-defined
1816 * bug fix: thread-safety problems in RUN-PROGRAM with :PTY.
1817 * bug fix: SLEEP transform could never fire.
1818 * build enhancement: defend against quirky host floating point
1820 * test enhancement: allow more parallelism in running the
1821 regression test suite
1823 changes in sbcl-1.5.0 relative to sbcl-1.4.16:
1824 * enhancement: SB-COVER emulates IN-PACKAGE when recording source maps;
1825 this makes it possible to generate coverage for forms that uses local
1826 package nicknames, or otherwise must be read in the correct package.
1827 * build enhancement: new host quirks mechanism, support for building under
1828 ABCL and ECL (as well as CCL, CMUCL, CLISP and SBCL itself)
1829 * optimization: (FIND-SYMBOL x "P") for constant "P" executes faster,
1830 subject to "P" not being a package-local nickname of any
1831 package. Similarly INTERN. (lp#1814924)
1832 * optimization: bounds checks are elided when possible where the same array
1833 is dereferenced multiple times.
1834 * bug fix: initargs are now deduplicated when computing effective slots.
1835 * bug fix: TREE-EQUAL with :TEST 'EQL now correctly computes its answer.
1836 (reported by Bahodir Mansurov)
1837 * bug fix: compiled (COERCE x 'FLOAT) no longer coerces double-floats into
1838 single-floats. (reported by J. Gareth Williams)
1840 changes in sbcl-1.4.16 relative to sbcl-1.4.15:
1841 * minor incompatible change: ENSURE-DIRECTORIES-EXIST no longer establishes
1842 a CONTINUE restart in case of an error.
1843 * minor incompatible change: Defining macros (DEFVAR, etc) which require a
1844 symbol as the name will fail to macroexpand if given a non-symbol.
1845 * enhancement: the unexported restart names SB-{ALIEN,FASL,IMPL,PCL}::RETRY
1846 have been replaced by SB-EXT:RETRY.
1848 changes in sbcl-1.4.15 relative to sbcl-1.4.14:
1849 * enhancement: added AVX2 instructions on x86-64, which can be used with
1851 * enhancement: specializer name parsing is less lenient and signals a
1852 specific condition in case of syntax errors. (lp#1808681)
1853 * enhancement: provide interactive restarts for some file-system errors.
1854 * enhancement: COMPILE no longer acquires the world lock.
1855 (fixes most occurrences of lp#308959)
1856 * bug fix: RUN-PROGRAM is more responsive and less likely to deadlock
1857 (lp#1702178, lp#1808641)
1858 * bug fix: traceroot can search for simple-fun targets (lp#1808659, reported
1860 * compiler bug fixes:
1861 ** related to code generation: lp#1805899, lp#1806982, lp#1807455
1862 ** related to interpreting and constant-folding: lp#1806513
1863 ** related to the type system: lp#1804759, lp#1804796
1864 ** related to eq-testing of structure slots: lp#1809582, lp#1808273
1865 ** related to dynamic-extent: lp#1809565, lp#1809253, lp#1809485,
1867 ** related to GC safety: lp#308949
1869 changes in sbcl-1.4.14 relative to sbcl-1.4.13:
1870 * enhancement: attempting to build on openbsd 6.0 or newer without
1871 the wxallowed mount option now results in a more useful error message.
1872 * enhancement: by popular demand, SB-EXT now exports two functions
1873 HEAP-ALLOCATED-P and STACK-ALLOCATED-P to assist in writing debug
1874 assertions that objects in hash-tables are not stack-allocated, etc.
1875 * bug fix: restored sb-thread support on OpenBSD.
1877 changes in sbcl-1.4.13 relative to sbcl-1.4.12:
1878 * minor incompatible change: PRINT-TYPE and PRINT-TYPE-SPECIFIER are not
1879 exported from SB-EXT. These were never announced, so this change would
1880 only affects users who discovered these undocumented functions.
1881 * enhancement: SB-EXT:SEARCH-ROOTS and SB-EXT:GC-AND-SEARCH-ROOTS
1882 are supported on all backends that use gencgc.
1884 changes in sbcl-1.4.12 relative to sbcl-1.4.11:
1885 * minor incompatible change: a number of platform-specific elements of
1886 *FEATURES* related to whether the system implements particular strategies
1888 * minor incompatible change: some changes to the (internal) implementation
1889 details of the x86 and x86-64 have necessitated changes to some low-level
1891 * enhancement: attempting to transfer control through GO or RETURN-FROM to
1892 frames which no longer exist are now caught and handled by the debugger.
1893 * enhancement: identical code (at the machine instruction level) can now be
1894 shared between functions, if explicitly requested.
1895 * enhancement: SB-EXT:STRING-TO-OCTETS and SB-EXT:OCTETS-TO-STRING are now
1897 * bug fixes: fix a number of bugs revealed by random testing (lp#1793171,
1898 lp#1793150, lp#1791550, lp#1792030, lp#1791059, lp#1790157, lp#1790717,
1901 changes in sbcl-1.4.11 relative to sbcl-1.4.10:
1902 * minor incompatible change: changes to the (internal) assembler on x86
1903 and x86-64 may cause problems to some low-level third-party libraries:
1904 ** new macro EA for defining an effective address, without size
1906 ** an explicit size modifier is now needed for MOVSX and MOVSZ
1908 ** MOVD and MOVQ move a single size of operand by definition.
1909 * enhancement: support the latest MinGW (lp#1786731, reported by il71)
1910 * enhancement: checks for modifications of constants can now be done in
1911 local (FLET/LABELS) functions.
1912 * optimization: improved type checking routines for various compound types.
1913 * optimization: array bound checks are elided on vectors when the index is
1914 known to be less than the length, including LOOP ACROSS.
1915 * optimization: the register allocator's use of temporaries is somewhat
1917 * optimization: checking widetags involves fewer conditional jumps on x86
1919 * bug fix: fix a number of bugs related to constant improper lists as
1920 sequence arguments (lp#1768563, lp#1768568, lp#1768652)
1922 changes in sbcl-1.4.10 relative to sbcl-1.4.9:
1923 * enhancement: added SB-EXT:MAKE-WEAK-VECTOR.
1924 * enhancement: constant-modification detection warnings can be generated
1925 in the presence of conditional constructs.
1926 * optimization: better bounds-checking on x86[-64] and ARM64.
1927 * optimization: adding 1 to or subtracting 1 from a fixnum variable does not
1929 * bug fixes: fix a number of bugs revealed by random testing (lp#1782826,
1930 lp#1779878, lp#1779737)
1932 changes in sbcl-1.4.9 relative to sbcl-1.4.8:
1933 * enhancement: SB-COVER instrumentation for x86[-64] has signficantly less
1934 overhead. The performance penalty for 64-bit code has been measured at
1935 around 30% slower than uninstrumented code as contrasted with slowdowns
1936 in excess of 100% previously.
1937 * enhancement: tracing a generic function with the :METHODS T option
1938 produces output corresponding to each method called under the default
1939 :ENCAPSULATE NIL tracing implementation.
1940 * bug fix: updated TRACE documentation. (lp#574614 was actually already
1941 fixed, but there were other issues.)
1942 * bug fix: fixed x86 GC bug causing heap corruption. (lp#1749369)
1943 * bug fix: improved compatibility with macOS High Sierra and graphical
1946 changes in sbcl-1.4.8 relative to sbcl-1.4.7:
1947 * bug fix: redefinition of method combinations now does the expected thing;
1948 generic functions using that method combination have their effective
1949 methods lazily recomputed according to the new definition of the method
1950 combination. (Reported by Didier Verna at ELS 2018)
1951 * bug fix: :arguments argument to the long form of DEFINE-METHOD-COMBINATION
1952 is now implemented more correctly, supporting suppliedp variables and
1953 &optional defaults. (Reported by Bruno Haible, lp#309084)
1955 changes in sbcl-1.4.7 relative to sbcl-1.4.6:
1956 * enhancement: better handling of unknown keyword arguments (lp#1750466)
1957 * enhancement: namestrings can now be computed for certain pathnames that
1958 previously did not have namestrings because of #\. characters in their
1959 name and/or type components.
1960 * bug fix: compiling a SLEEP call with a float positive infinity argument no
1961 longer causes an internal error (lp#1754081)
1962 * bug fix: keyword arguments provided to a generic function with
1963 EQL-specialized methods are checked more correctly (reported by Syll,
1966 changes in sbcl-1.4.6 relative to sbcl-1.4.5:
1967 * enhancement: DISASSEMBLE on a symbol naming a macro will disassemble
1968 the expander, not the code that traps attempted FUNCALL of the macro.
1969 * enhancement: The sb-sprof contrib now provides an experimental interface
1970 for accessing collected profiler data.
1971 * enhancement: The instruction-level profiling of the sb-prof contrib
1972 annotates the disassembler output more efficiently.
1973 * optimization: improved dynamic-extent handling of nested variables.
1975 changes in sbcl-1.4.5 relative to sbcl-1.4.4:
1976 * minor incompatible change: building with/without the :sb-package-locks
1977 feature is no longer an option. Package locks are always compiled in,
1978 and removing :sb-package-locks from *features* will have no effect.
1979 * enhancement: FIND-PACKAGE does not acquire a mutex
1980 * enhancement: cheneygc can perform heap relocation on startup
1981 * enhancement: in threaded builds, finalizers execute in a system-internal
1982 thread so that a user thread which invokes GC is unblocked from performing
1983 work as soon it returns from GC and invokes any post-GC hooks.
1984 As such, it is more important than before to avoid assumptions about
1985 special variable bindings in finalizers, even in single-threaded code.
1986 * optimization: faster (funcall (or function symbol)) on x86-64.
1988 changes in sbcl-1.4.4 relative to sbcl-1.4.3:
1989 * bug fix: pathname accessors such as PATHNAME-DIRECTORY work on
1991 * bug fix: (pathname-{device,directory,name,type} ... :case :common) works
1992 as expected. In particular MAKE-PATHNAME composed with the accessors
1993 roundtrips properly when both use the same :case. (lp#1739906)
1994 * bug fix: DIRECTORY no longer gets confused when the value of
1995 *DEFAULT-PATHNAME-DEFAULTS* has a name or type component. (lp#1740563)
1996 * bug fix: pattern pieces in pathname components are correctly escaped
1998 * bug fix: DELETE-DIRECTORY no longer signals an error when the directory is
1999 supplied as a pathname with name and/or type components containing escaped
2000 characters. (lp#1740624)
2001 * bug fix: weak hash-tables no longer cause GC time to scale superlinearly
2003 * bug fix: CANCEL-FINALIZATION operates in approximately constant time
2004 per operation (lp#1587983)
2005 * bug fix: big-endian MIPS systems now (mostly) work again (broken since
2007 * bug fix: backtrace from arg-count errors on systems other than x86, x86-64,
2008 ARM, and ARM64 now works again.
2009 * bug fix: backtrace from asynchronous interrupts on non-x86, non-x86-64
2010 systems should now be more reliable.
2011 * enhancement: warnings and errors referring to bindings established by LET,
2012 LET*, FLET and LABELS point to the offending form more accurately.
2013 * enhancement: backtrace for invalid argument count produces the exact
2014 supplied arguments including the extra ones on all platforms (no longer
2015 just x86, x86-64, ARM, and ARM64).
2017 changes in sbcl-1.4.3 relative to sbcl-1.4.2:
2018 * enhancement: SLEEP respects deadlines established by SB-SYS:WITH-DEADLINE.
2019 * bug fix: DECODE-TIMEOUT and operators accepting a timeout no longer signal
2020 an error when called with an argument that is of type (real 0) but not
2021 (unsigned-byte 62) (lp#1727789)
2022 * bug fix: fixed heap exhaustion bug when consing millions of small objects
2023 * bug fix: sb-safepoint builds are now a lot less prone to deadlocks and odd
2024 crashes (lp#1424031, lp#1268710)
2025 * bug fix: argumentless CALL-NEXT-METHOD where specialized-to-T or
2026 unspecialized parameters are mutated now uses the original (non-mutated)
2027 parameter values (lp#1734771)
2028 * bug fix: memory faults from lisp no longer use (thread-and-interrupt
2029 unsafe) global storage for fault addresses (everywhere), and now have
2030 cleaner backtraces (on x86 and x86-64). (lp#309068)
2031 * bug fix: pathnames with a directory component of the form
2032 (:absolute {:up,:wild,:wild-inferiors}) no longer fail to unparse.
2034 * bug fix: more reliable signal handling on macOS.
2036 changes in sbcl-1.4.2 relative to sbcl-1.4.1:
2037 * minor incompatible change: SB-EXT:QUIT is no longer marked as deprecated
2038 and behaves like SB-EXT:EXIT.
2039 * enhancement: ASDF updated to 3.3.1. The ASDF release is dedicated to
2040 the late Elias Pipping who put enormous amounts of work into it despite
2041 his terminal illness. Thank you and rest in peace. (lp#1681201)
2042 * enhancement: alien routines compiled with '-fsanitize=thread' and/or
2043 '-fsanitize=memory' cause fewer false positives in error reporting.
2044 * optimization: fewer instances of consing float constants at runtime.
2045 * bug fix: a number of compiler bugs detected by Paul F. Dietz' randomized
2046 tester. (lp#1731503, lp#1730699, lp#1723993, lp#1730434, lp#1661911,
2047 lp#1729639, lp#1729471, lp#1728692)
2048 * bug fix: better errors from NAMESTRING and friends on pathnames with no
2049 namestrings. (lp#792154)
2050 * bug fix: EQUAL and EQUALP compiler transforms were too confident in
2051 deriving a result. (lp#1732277, lp#1732225)
2052 * bug fix: FILL sometimes returned the underlying data vector rather than
2053 the given array. (lp#1732553)
2054 * bug fix: SEARCH returned the wrong answer in some cases. (lp#1732952)
2055 * bug fix: the type (COMPLEX INTEGER) behaves more as specified by Function
2056 TYPEP, which has stronger constraints than System Class COMPLEX.
2057 (Reported by Eric Marsden, lp#1733400)
2059 changes in sbcl-1.4.1 relative to sbcl-1.4.0:
2060 * optimization: faster foreign callbacks.
2061 * enhancement: complex arrays can be stack allocated.
2062 * enhancement: PROCESS-KILL now exists on win32 and PROCESS-PID actually
2064 * optimization: the register allocation method used by the compiler when
2065 optimizing for speed is now faster for functions with large bodies.
2066 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION works on big-endian CPUs
2067 (fixes lp#490490 for real rather than by disabling a test)
2068 * bug fix: code objects and bignums of large enough size to be placed
2069 on GC pages without any other object no longer cause accidental copying
2070 during garbage collection. (gencgc only)
2071 * bug fix: sb-fasteval failure with 0-argument lambdas (lp#1722715)
2072 * bug fix: RUN-PROGRAM doesn't leak handles on win32 and PROCESS-CLOSE
2073 doesn't crash. (lp#1724472)
2075 changes in sbcl-1.4.0 relative to sbcl-1.3.21:
2076 * minor incompatible change: DESTRUCTURING-BIND treats non-toplevel () as
2077 nested empty pattern. This seems to be what the standard mandates, so
2078 conforming code should not be affected.
2079 * ehancement: (GC :GEN 7) with gencgc will zero-fill dead pseudo-static
2080 objects so that they do not spuriously cause reachability of objects that
2081 would have been otherwise dead.
2082 * enhancement: PROCESS-STATUS now tracks stopped and continued processes
2083 properly (also fixes lp#1624941, based on patch by Elias Pipping).
2084 * bug fix: INSPECT handles errors signaled while printing slot
2086 * bug fix: DESCRIBE works on classes like it used to.
2087 * bug fix: *LOAD-PATHNAME* and *LOAD-TRUENAME* are bound to pathnames
2088 when processing a sysinit or userinit file
2089 * bug fix: save-lisp-and-die is able to collect more garbage on non-x86oid
2091 * bug fix: fixed out-of-bounds array read in optimized POSITION on bit-vectors
2092 * bug fix: signal emulation respects the 128-byte stack red zone on x86-64
2095 changes in sbcl-1.3.21 relative to sbcl-1.3.20:
2096 * minor incompatible change: the CLOBBER-IT restart for defstruct redefintion
2097 has been removed after a 15 year deprecation cycle. Use the new name,
2098 RECKLESSLY-CONTINUE. Note also that this restart is hidden if deemed unsafe
2099 due to altered placement of untagged slots in the structure.
2100 * enhancement: the assignment of -DSBCL_PREFIX= in src/runtime/GNUmakefile
2101 can be removed as a local patch, which results in an sbcl executable
2102 that finds its core file relative to itself by looking in "../lib/sbcl".
2103 * enhancement: backends using the generational GC are able to relocate
2104 dynamic space anywhere the operating system places it.
2105 This feature can be disabled by removing :relocatable-heap from the
2106 build configuration. Not supported on Windows.
2107 * enhancement: DEFMETHOD no longer signals IMPLICIT-GENERIC-FUNCTION-WARNING.
2108 * enhancement: better type conflict detection for high order functions, e.g.
2109 (find x "123" :test #'=)
2110 * enhancement: the tabular output of ROOM is aligned dynamically, preventing
2111 misaligned tables for larger sizes or counts.
2112 * enhancement: ROOM reports on immobile space if applicable.
2113 * optimization: optimized external-format routines.
2114 * bug fix: SB-INTROSPECT:ALLOCATION-INFORMATION returns :IMMOBILE
2115 instead of :FOREIGN for objects in immobile space.
2116 * bug fix: dotted lists in special forms and function call forms signal
2117 an appropriate error
2118 * bug fix: EQUALP hash tables with pathname keys now ignore internal slots.
2119 (lp#1712944, reported by Jason Miller)
2121 changes in sbcl-1.3.20 relative to sbcl-1.3.19:
2122 * minor incompatible change: DEF{GENERIC,METHOD} no longer accept some
2123 illegal lambda lists such as (defgeneric bar (foo &key foo)) or
2124 (defgeneric baz (t)) that were accepted before.
2125 * optimization: a valueless &AUX binding in a BOA constructor does not
2126 force all slots reads in safe code to perform a full type check.
2127 * optimization: ATOMIC-PUSH and ATOMIC-POP generate better code
2128 * bug fix: the low-level debugger would erroneously print - or not print
2129 as the case may be - "(bad-address)" for some objects depending whether
2130 the --dynamic-space-size argument was used at Lisp startup
2131 * bug fix: a DEFCONSTANT with a non non-eql-comparable object as the value
2132 could cause miscompilation if that constant appeared as the default
2133 expression for an &OPTIONAL binding
2134 * bug fix: generic function lambda lists are now checked for repeated
2135 and otherwise illegal entries. (lp#1704114)
2136 * bug fix: setting gencgc_verbose = 1 could cause deadlock in fprintf()
2137 depending on the platform's stdio implementation. The relevant code
2138 has been changed to use snprintf() and write() instead.
2140 changes in sbcl-1.3.19 relative to sbcl-1.3.18:
2141 * enhancement: specialized arrays can be printed readably without using
2143 * enhancement: SB-DEBUG:PRINT-BACKTRACE truncates huge string arguments.
2144 The full string remains available for inspection via (SB-DEBUG:ARG).
2145 * bug fix: backtracing from several threads at once could fail
2146 * bug fix: floating-point infinities could not be used as keys
2147 in EQUALP hash tables. (lp#1696274)
2148 * bug fix: random sb-fasteval failures. (lp#1642708)
2149 * bug fix: align the stack in callback wrappers to defend against C
2150 compiler over-aggressive use of SIMD. (lp#1697528)
2151 * bug fix: don't try to find the class when reporting that a class does
2152 not exist for a primitive type. (lp#1697226)
2154 changes in sbcl-1.3.18 relative to sbcl-1.3.17:
2155 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
2156 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
2157 invocations when building from source.
2158 * minor incompatible change: the result of WRITE-TO-STRING may be
2159 a BASE-STRING if all characters written are of type BASE-CHAR.
2160 * minor incompatible change: the broadcast stream with no output
2161 streams is a singleton object. That object satisfies OPEN-STREAM-P
2162 regardless of how many times CLOSE is invoked on it.
2163 * enhancement: x86[-64] backends contain an experimental feature
2164 which aids in demonstrating reachability of any object starting
2165 from a tenured object or a thread stack by producing a proof
2166 as a sequence of pointers to follow.
2167 The file "tests/traceroot.test.sh" contains an example usage.
2168 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
2169 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
2170 loaded from different fasl files may be collapsed to one object.
2171 If the variable is set to 2, then additionally strings which are
2172 STRING= in code resulting from COMPILE can be coalesced.
2173 For instance, two functions returning the literal string "HI"
2174 might return EQ strings after collapsing, which may be undesired
2175 in a particular use. The flag pertains to gencgc only.
2176 * enhancement: SXHASH values on pathnames are better distributed
2177 * bug fix: MAKE-PATHNAME removes empty strings as components of a
2178 directory, as is permitted: "Whenever a pathname is constructed
2179 the components may be canonicalized if appropriate."
2180 * optimization: various printer and FORMAT performance enhancements.
2181 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
2182 threads exit (lp#1682671, reported by Syll)
2183 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
2184 list of interactive threads. (lp#1682867, reported by Syll)
2186 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
2187 * enhancement: memory overhead from the garbage collector's metadata
2188 is reduced on 64-bit architectures; no change for 32-bit.
2189 * enhancement: further garbage collector speedups affecting
2190 pinned objects on conservative backends, and simple-vectors.
2191 * enhancement: on Linux a custom handler for SIGSEGV can be called
2192 for page faults outside of dynamic space by changing the C symbol
2193 "sbcl_fallback_sigsegv_handler".
2194 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
2195 * bug fix: random disassembler failures. (lp#1527931)
2196 * The bundled sb-md5 contrib has been updated to release 2.0.4
2197 which is licensed under Creative Commons CC0 per author's statement
2198 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
2199 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
2201 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
2202 * optimization: various small tweaks give around 5% faster garbage
2204 * bug fix: better detection of when an impossible code path does
2205 not need a warning. (lp#1668619)
2206 * bug fix: stronger attempts to disable position-independent
2207 executable building. (lp#1668986, patch from Mark Wright)
2208 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
2209 (lp#1674437, reported by Jan Idzikowski)
2211 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
2212 * minor incompatible change: the reader will when feasible create
2213 new symbols using a BASE-STRING for the print name. Additionally,
2214 string literals can favor the base-string type if desired, though
2215 the default is to always return UTF-32 strings for compatibility.
2216 A preference for base-string does not disable reading Unicode.
2217 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
2218 If Unicode was disabled at build time, this setting does nothing.
2219 * enhancement: SBCL generates more debug information by default.
2220 * enhancement: type errors provide context information, such as which
2221 variable is being bound, which slot of which structure is being set.
2222 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
2223 enabled by default), then symbols will never be moved in memory
2224 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
2225 code generation as well as interaction with foreign routines.
2226 This feature can only be enabled if #+immobile-space is enabled.
2227 * enhancement: undefined function errors can be restarted on x86-64, to
2228 either retry calling the function again or call a user supplied function.
2229 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
2230 addition to a lower bound.
2231 * enhancement: #+immobile-code improves the speed of function calling.
2232 Some delay may be noticed when redefining an existing function
2233 from a saved core file however.
2234 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
2236 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
2237 files to help with delivery of executables. (Thanks to François-René
2239 * bug fix: data race in GENTEMP fixed - it can no longer return the
2240 same interned symbol to multiple threads if called concurrently
2241 * bug fix: interrupting LOADing of FASLs does not leave functions without
2242 source locations. (lp#540276)
2243 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
2244 treated as if they were actually stack allocated (lp#1659964)
2245 * bug fix: correctly handle the case of a non-local exit within a function
2246 terminating the extent of dynamic-extent, dynamic-bound variables in the
2247 presence of multiple-values (lp#1655011)
2248 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
2249 sb-eval and sb-fasteval) now actually pins objects on gencgc.
2250 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
2251 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
2252 (directory "SOMETHING/**/MORE")
2253 * bug fix: better console IO on Windows (lp#1660906)
2255 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
2256 * minor incompatible change: the SB-PCL walker no longer recognizes
2257 macros expanding into a DECLARE expression. This is not a language change,
2258 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
2259 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
2260 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
2261 during macroexpansion point to the form that caused the problem more
2263 * enhancement: the "--noinform" command-line option inhibits output from
2264 save-lisp-and-die in addition to removing the startup banner.
2265 * bug fix: PROCESS-KILL failed to return errno if the system call failed
2266 * optimization: slightly more comprehensive treatment of the keyword
2267 arguments to MAKE-ARRAY in compiler transformations.
2269 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
2270 * enhancement: SET triggers package locks on undefined variables.
2272 * enhancement: new Windows specific option to run-program, :escape-arguments
2274 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
2275 CONSTANT where CONSTANT names a constant variable picks up the new value
2276 of CONSTANT in case it has been redefined. (lp#1644944)
2277 * optimization: faster TYPEP on undefined at compile-time types and upcoming
2278 class definitions. (lp#1082967)
2279 * optimization: memory consumption of each STANDARD-OBJECT instance is
2280 reduced by 2 words if the compact-instance-header feature is enabled.
2281 * optimization: CONDITION instances are quicker to allocate.
2282 * optimization: unoptimized calls to FILL on specialized vectors are now
2283 just as fast as T vectors.
2284 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
2285 * bug fix: cross reference information in fasls is no longer incompatible
2286 between different cores (lp#1648186)
2288 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
2289 * enhancement: on x86-64, compiled functions loaded from fasl files
2290 can not be moved, but can be freed, by GC. Additionally, COMPILE will
2291 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
2292 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
2293 The benefits are better physical separation of code from data,
2294 and potentially easier examination of live images by external tools.
2295 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
2296 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
2297 depending on the platform.
2298 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
2299 redefining that same function could lead to execution of random bytes.
2300 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
2301 * bug fix: better handling of exceptions on macOS.
2303 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
2304 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
2305 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
2306 documentation string (based on patch by Patrick Stein)
2307 * enhancement: support unboxed signed-word structure slots on x86, x86-64
2308 and ARM64. (lp#377616)
2309 * optimization: faster logical bit-array operations on multidimensional
2311 * optimization: better GC performance in the presence of many threads.
2312 (patch by Ilya Perminov, lp#1339924)
2313 * optimization: multiple-value-call is optimized with multiple argument
2314 forms, not just one. (lp#753803)
2315 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
2316 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
2317 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
2318 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
2319 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
2320 to a support mark-and-sweep as well as the traditional copying strategy.
2321 It is conceivable that some applications might be adversely affected.
2322 Please see ':immobile-space' in 'base-target-features.lisp-expr'
2323 for further details, and possible reasons to disable this feature.
2324 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
2325 from 2 words to 1 word, reducing memory consumption in applications
2326 which create many small structures.
2328 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
2329 * enhancement: more compact low-level error signaling code
2330 * enhancement: more compact encoding of cross-reference information
2331 * optimization: faster out of line fixnum-float comparisons.
2332 * optimization: filling a known simple-vector with a constant value
2333 is about as fast in unoptimized code as in code compiled with (SPEED 3),
2334 and the x86-64 implementation is able to use SSE instructions.
2335 * bug fix: correctly handle the case of a non-local exit within a function
2336 terminating the extent of dynamic-extent functions and variables in the
2337 presence of multiple-values (lp#1563127)
2338 * bug fix: restore builds on the latest OSX with the latest Xcode
2341 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
2342 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
2343 instead of (ARRAY CHARACTER (*)) when possible.
2344 * enhancement: cached make-instance/allocate-instance constructors can now
2345 get garbage collected.
2346 * optimization: better performance for some unoptimized operations on
2348 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
2349 DEFPACKAGE form no longer signals a bogus error
2351 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
2352 * minor incompatible change: the system now understands that the CONDITION
2353 type is disjoint with many other system types.
2354 * minor incompatible change: argument types in condition report functions
2355 are now declared (in combination with the above change, this can result in
2356 early detection of erroneous code).
2357 * enhancement: simple arrays of any rank can be stack-allocated
2358 on platforms supporting stack allocation of vectors.
2359 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
2360 MISMATCH and other array and sequence functions.
2361 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
2362 * optimization: more efficient CHANGE-CLASS.
2363 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
2364 cause memory faults, and should work properly (lp#1603806, reported by
2366 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
2369 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
2370 * bug fix: preserve the name of the destructive function for the destroyed
2371 constant and important result warnings, even when declared NOTINLINE.
2372 * optimization: faster operations on list-sets.
2373 * optimization: better type derivation of set functions.
2375 * optimization: load-time TLS-INDEX assignment, and other
2376 microoptimizations, on x86.
2380 ** ARRAY-DIMENSIONS;
2381 ** ARRAY-TOTAL-SIZE;
2382 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
2384 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
2385 * bug fix: do not insert conditional newlines in print-unreadable-object
2386 (lp#1398290). This reverses a change made in lp#488979 which reversed
2387 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
2388 * bug fix: constant negative rotations of 32-bit quantities are compiled
2389 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
2392 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
2393 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
2394 * enhancement: speed up debug info creation for highly nested functions.
2396 * enhancement: the interleaved structure slot optimization from
2397 release 1.2.6 has been ported to all architectures.
2398 * enhancement: support run-program I/O redirection into lisp streams on
2400 * bug fix: better wording in missed optimization note. (lp#1003265)
2401 * bug fix: interpreted (CAS SVREF) was broken
2402 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
2405 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
2406 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
2407 * enhancement: CONSTANTP understands backquote.
2408 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
2409 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
2411 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
2412 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
2413 is less likely to cause confusion in the compiler.
2414 * bug fix: DOCUMENTATION works as intended for classes with non-standard
2416 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
2417 returns NIL in certain situations
2418 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
2420 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
2423 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
2424 * enhancement: warn about argument mismatch for functions passed as
2425 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
2426 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
2427 now be constant-folded if all function arguments are declared as foldable.
2428 * optimization: improved logical operations on integers of unknown type.
2429 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
2431 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
2432 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
2433 of short sequences and stream types
2434 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
2435 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
2437 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
2438 arguments and small bit positions. (lp#1277690)
2439 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
2440 * bug fix: DEFUN of a function name that collides with a system-generated
2441 structure accessor does not confuse the runtime. (lp#540063)
2442 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
2444 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
2445 * enhancement: SB-THREAD support for ARM64.
2446 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
2447 will warn if a defaulted value is incompatible with its slot type.
2448 * enhancement: a local INLINE declaration on a structure constructor
2449 will work as intended, subject to any other factors that inhibit
2450 inlining, even if the DEFSTRUCT was not itself within a global
2451 INLINE proclamation for the named constructor
2452 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
2453 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
2455 * enhancement: the interleaved structure slot optimization from
2456 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
2457 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
2458 is made to join the current thread
2459 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
2460 * bug fix: structure constructor type checking is better. (lp#1508735)
2461 * bug fix: supplied-p variables for unused optional or keyword variables no
2462 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
2463 backtrace machinery) (lp#1498644)
2464 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
2465 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
2466 (fixes issues with floating-point type derivation in the compiler).
2467 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
2469 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
2470 parsing negative-fixnum values for internal-error arguments and escaped
2471 debug variables on 64-bit CPUs).
2472 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
2473 now works correctly.
2474 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
2476 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
2479 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
2480 * minor incompatible change: the environment passed to a macro/setf/deftype
2481 expander is not always an object of type SB-KERNEL:LEXENV.
2482 It can be nil, as is permissible by the standard.
2483 * enhancement: ported to ARM64 Linux.
2484 * enhancement: a new interpreter is included which has many benefits
2485 over sb-eval. It is disabled by default. See src/interpreter/README
2486 for instructions to enable it, and further details.
2487 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
2488 would fail to perform "normal semantic processing such as macro expansion"
2489 as stipulated by X3J13 issue LOAD-TIME-EVAL.
2490 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
2491 string as confusable. (lp#1504739)
2492 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
2493 if COMPUTE-IT was a local macro that shadowed a global function.
2494 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
2495 on platforms that use only the minimum specified set of fields in struct
2496 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
2497 very probably others). (partial fix for lp#1500951)
2499 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
2500 * enhancement: by default, timers with a repeat interval do not "catch up"
2501 by repeatedly calling their function after a clock discontinuity such as a
2502 suspend and resume cycle
2503 * bug fix: correctly restore multiple values on the stack in the presence of
2504 alien calls. (lp#1489590)
2505 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
2506 is a subtype of CHARACTER.
2507 * bug fix: an EQL method specializer no longer causes garbage retention
2508 if there are no extant methods using the specializer. (lp#492851)
2510 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
2511 * new feature: DEPRECATION declaration for functions, variables and types
2512 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
2513 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
2514 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
2515 section of the manual.
2516 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
2517 * enhancement: definitions within PROGN get proper source locations when
2518 compiled (needs latest Slime to take advantage of this). (lp#1473147)
2519 * enhancement: source locations for DEFCLASS slots now point directly to the
2520 slot definitions, not the whole DEFCLASS form.
2521 * bug fix: better source location in the presence of quoted forms.
2523 * bug fix: better source locations inside backqoute. (lp#1361502)
2524 * bug fix: HANDLER-BIND requires that the handler-function be
2525 a function designator at the time of binding establishment. (lp#1480679)
2526 * bug fix: inlined functions surrounded by nested macrolets are properly
2527 inlined. (lp#309123)
2529 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
2530 * minor incompatible change: The name of a compiled anonymous lambda
2531 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
2532 a lambda-list-like list following the introductory LAMBDA that is not
2533 in general a syntactically valid lambda list. Specifically, it won't
2534 retain default values, supplied-p variables, or &KEY or &AUX bindings.
2535 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
2536 scratch to address a handful of performance and correctness issues.
2537 Some minor behavioral differences exist regarding order of evaluation
2538 of default forms for unsupplied &OPTIONAL and &KEY arguments
2539 when nested destructuring patterns are involved.
2540 (lp#707556, lp#707573, lp#707578, lp#708051)
2541 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
2543 * enhancement: sb-unicode:normalize-string has a new optional argument,
2544 FILTER, a callback which controls which decomposed characters are
2545 collected. Useful for stripping away diacritics more efficiently.
2546 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
2547 after a call of ADJUST-ARRAY. (lp#1333731)
2548 * bug fix: Dynamic-extent allocation with a loop between allocating a value
2549 and the start of its environment no longer discards the allocated data
2550 when the loop is taken. (lp#1472785)
2551 * bug fix: Variable-reference elimination no longer generates incorrect code
2552 under certain circumstances. (lp#1446891)
2553 * bug fix: variables with EQL types are no longer treated as constants by
2554 VOPs, which caused problems with closures being allocated for such
2555 variables, but they remained unused. (lp#1390149)
2556 * bug fix: Windows installer generates registry key name
2557 correctly. (lp#1476447)
2559 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
2560 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
2561 return the new count
2562 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
2563 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
2565 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
2566 printed. (lp#1437947)
2567 * bug-fix: TRUENAME works properly on broken symlinks presented as
2568 directories. (lp#1400003)
2569 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
2570 order of argument evaluation. (lp#1458190)
2571 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
2572 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
2573 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
2574 situations incorrectly return the result of a SLOT-MISSING method
2575 instead of always returning the new value. (lp#1460381)
2576 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
2577 its lexical environment (thus being a closure) caused expressions
2578 involving the macro name to cause corruption in the pretty-printer
2579 due to faulty introspection of the lambda list of a closure.
2580 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
2581 function are of the matching sequence type. (lp#1459581)
2582 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
2584 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
2585 * minor incompatible change: the SB-C::*POLICY* variable is no longer
2586 a list. Code which manipulated it as such (including but not limited
2587 to non-bundled releases of ASDF) will need to be revised.
2588 * enhancement: The input stream for COMPILE-FILE implements
2590 * enhancement: EVAL errors that occur by way of LOAD report the starting
2591 line and column number of the erring toplevel form. (lp#565247)
2592 * optimization: better MAP and MAP-INTO on known vector result types.
2593 * bug fix: Read/modify/write macros accessing a place which is a
2594 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
2595 do not access subforms more than once. (lp#1450968)
2596 * bug fix: short form of DEFSETF no longer allows trailing junk.
2597 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
2598 regarding argument evaluation order. (lp#1452539)
2599 * bug fix: POP works as specified in CLHS if the setter for its
2600 argument has a side-effect on the existing CAR value. (lp#1454021)
2601 * bug fix: Reading "#()" with a positive numeric argument signals a
2602 reader error. As specified, reading "#1()" has undefined consequences,
2603 so correct portable code should be indifferent to this. (lp#1252100)
2604 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
2605 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
2607 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
2608 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
2609 which any part is unrecognizable as a legal type-specifier.
2610 The dispatch table will be altered, but the new entry is disabled.
2611 Subsequent type-defining forms will cause pprint-dispatch tables to
2612 re-examine whether any disabled entries should be enabled. (lp#1429520)
2613 * enhancement: Loading code containing calls to a deprecated function will,
2614 under most circumstances, signal warnings similar to compiling such code.
2615 The usual caveat holds about not detecting calls through a computed name,
2616 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
2617 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
2618 to a constant (VALUES integer integer) indicating the source line/column
2619 from which it was read, intended for logging Lisp runtime errors in
2620 a style similar to that afforded by the C preprocessor __LINE__ macro.
2621 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
2622 * enhancement: improved source locations for VOPs, alien types and
2624 * bug fix: functions in :FINAL deprecation have the correct docstring.
2625 No visible change, as no such functions presently exist. (lp#1439151)
2626 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
2627 if OTHER names either a macro or special-operator. (lp#1439921)
2629 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
2630 * minor incompatible change: all SOCKINT::WIN32-* functions have been
2631 deprecated with EARLY deprecation state
2632 * minor incompatible change: performing introspection via the system-internal
2633 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
2634 a function, as it always was before. (Affects swank-fancy-inspector)
2635 * enhancement: The value of SXHASH on bit-vectors of length equal to the
2636 word size now depends on the vector's contents instead of being constant;
2637 its value on bit-vectors of length divisible by the word size now depends
2638 also on the contents of the vector's last word.
2639 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
2641 * bug fix: A new dead code elimination phase removes dead code loops
2642 that confuse stack analysis. (lp#1255782, lp#308914)
2643 * bug fix: A toplevel form which was simple enough to bypass the main
2644 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
2645 would produce an invalid fasl file. (lp#1427050)
2646 * bug fix: The compiler no longer signals an internal error when
2647 encountering invalid FUNCTION forms like (function 1)
2648 * bug fix: express proper dependencies in the ASDF contrib, to support
2649 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
2652 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
2653 * minor incompatible change and bug fix: unboxed numeric constants
2654 on x86oids are arranged in memory differently, and the disassembler
2655 does not show them separately in DISASSEMBLE, but does
2656 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
2657 * optimization: The compiler's treatment of type specifiers makes
2658 it slightly faster and more memory-efficient. Portable code
2659 should be indifferent to this change, however, users of
2660 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
2661 and (MEMBER NIL T) are both internally collapsed to the former,
2662 so that the latter can never be obtained as part of an FTYPE.
2663 * optimization: a TYPEP call in which the second argument is not a
2664 QUOTE form but nevertheless recognized as a compile-time constant
2665 might open-code the test. One scenario for this involves backquote,
2666 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
2667 deferring until runtime should declare (NOTINLINE TYPEP).
2668 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
2669 code requiring delayed evaluation could be unportable though.]
2670 * enhancement: unused variables at the top-level are now reported.
2672 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
2674 * bug fix: compiler no longer signals an error when compiling certain
2675 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
2676 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
2677 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
2678 lp#1412881, lp#945261, lp#1419205, lp#1409402)
2679 * bug fix: files larger than 4GB can now be compiled.
2680 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
2681 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
2682 * bug fix: callbacks from foreign threads can work without enabling
2684 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
2685 macros. (lp#1387404)
2686 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
2687 * bug fix: compiler no longer fails to dump a multidimensional array
2688 constant involving a circular reference to itself
2689 * bug fix: conditional and nested DX allocation no longer confuse the
2690 compiler in STACK analysis. (lp#1044465)
2691 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
2693 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
2694 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
2695 * enhancement: backtrace for invalid argument count produces the exact
2696 supplied arguments including the extra ones, on x86, x86-64 and ARM.
2697 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
2698 are used before the structure is defined; similarly for the predicate.
2699 * optimization: FORMAT NIL with only ~a and string arguments is transformed
2701 * optimization: POSITION and FIND when inlined into code that is compiled
2702 with qualities of safety < 2 and speed > space will no longer signal
2703 an error on circular lists, but will potentially loop forever if given
2704 no :END constraint. As was always the case, calls that are not inlined
2705 are safe regardless of lexical policy.
2706 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
2707 no longer cause debugger failure when printing a backtrace
2708 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
2709 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
2710 did not work, and now it does.
2712 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
2713 * optimization: returning constant values refers to preboxed constants
2714 more reliably. (lp#1398785)
2715 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
2716 for a function after at least one ordinary (not inlined) call to that
2717 function was compiled, indicating a likely compilation order problem.
2718 Likewise a warning ensues if a call is compiled to a function
2719 that is subsequently proclaimed INLINE.
2720 * enhancement: always lose() when something goes wrong while saving a core
2721 (instead of just printing an error on stderr in some situations).
2722 * enhancement: frames in the debugger are now restartable by default.
2723 * bug fix: restore error handling on Windows x86.
2724 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
2725 at compile-time when possible. (lp#330299)
2726 * bug fix: parsing of malformed type specifiers no longer results
2727 in a memory-fault-error.
2728 * bug fix: LOOP properly destructures nested lists in WITH.
2729 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
2730 longer signals the wrong error.
2731 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
2733 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
2734 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
2735 select() if the OS has the former. Previously poll() was used
2736 only if waiting on exactly one file descriptor.
2737 * enhancement: efficiency of access to untagged structure slots is improved
2738 on x86-64, and the order of slots in memory is exactly as specified by
2739 defstruct, simplifying use of structures as arguments to foreign calls.
2740 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
2742 * bug fix: GC memory corruption during internal memory handling.
2743 * bug fix: duplicate effective-slot-definition objects as compared
2744 by EQ on name could be present in CLASS-SLOTS of a class whose
2745 metaclass was structure-class or condition-class. (lp#1049423)
2746 * bug fix: HANDLER-BIND with empty bindings works again; regression in
2748 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
2750 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
2751 (member #\a #\c). (lp#1392068)
2752 * bug fix: READ sometimes accidentally preserved a whitespace character
2753 after a token when it should not have. (lp#327790)
2755 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
2756 * enhancement: sb-bsd-sockets now has basic support for IPv6
2757 * enhancement: An sb-unicode package has been added, containing
2758 many functions related to handling Unicode text
2759 * enhancement: The reader now normalizes symbols to Normalization
2760 Form KC (NFKC). This behavior can be disabled with
2761 SB-EXT:READTABLE-NORMALIZATION
2762 * enhancement: a style-warning is signaled if OPTIMIZE declarations
2763 multiply specify a quality with differing values. (lp#310267)
2764 * bug fix: conservatively pointed to pages wipe out unused dwords so
2765 that they cannot act as false roots in turn.
2766 * bug fix: the walker's handling of lexical variable and symbol-macro
2767 bindings is improved (lp#375326, lp#1368305)
2768 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
2769 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
2770 * bug fix: in interpreted code, inequality predicates did not type-check
2771 arguments that weren't examined, and a 1-argument use of MIN or MAX
2772 accepted a complex number. (lp#1373702)
2773 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
2774 (lp#1364413, thanks to Zach Beane)
2776 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
2777 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
2778 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
2779 SEQUENCE:MERGE respectively when the specified result type designates an
2781 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
2783 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
2784 universal superclass (lp#1332983)
2785 * bug fix: reading an uninterned symbol whose print name has the
2786 syntax of an integer signals an error. (lp#310062)
2787 * bug fix: the walker is less likely to be confused when walking LET* forms
2788 with special bindings and use of those bindings and others of the same
2790 * bug fix: a rare bug affecting 32-bit platforms resulting in a
2791 fatal condition with the message "Globaldb rehash failure" has been fixed.
2793 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
2794 * enhancement: DOCUMENTATION works on instances of
2795 FUNCALLABLE-STANDARD-CLASS
2796 * enhancement: ASSERT reports arguments of calls to lexical functions in
2797 additional to global functions.
2798 * enhancement: ASDF updated to 3.1.3
2799 * enhancement: UIOP can be loaded without ASDF.
2800 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
2801 before accessing its class-precedence list.
2802 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
2804 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
2805 class is a FORWARD-REFERENCED-CLASS.
2806 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
2807 which initargs have been supplied.
2808 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
2810 * bug fix: macroexpanding a backquoted expression involving ",."
2811 outside of the compiler failed. (lp#1354623)
2813 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
2814 * incompatible change: the #\` ("backquote") reader macro was reimplemented
2815 to support robust pretty-printing. Reading a form involving #\` produces
2816 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
2817 that are not lists. Code that unportably attempts operations on
2818 un-evaluated forms resulting therefrom, e.g.
2819 (SUBST a b (read-from-string "`(x (,y))"))
2820 might generate incorrect results and/or errors.
2821 * enhancement: support for GNU/kFreeBSD x86.
2822 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
2823 and DEFGLOBAL variables of type fixnum.
2824 * enhancement: arithmetic constant reduction is now performed on defconstant
2825 constants too. (lp#1337069).
2826 * bug fix: certain ftype proclamations containing &optional t &rest t no
2827 longer cause subsequent definitions to signal bogus style-warnings.
2828 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
2829 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
2832 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
2833 * enhancement: GENCGC is enabled on ARM.
2834 * enhancement: better error reporting for invalid calls to local functions.
2835 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
2837 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
2838 to Robert Swindells)
2839 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
2841 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
2843 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
2844 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
2845 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
2847 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
2848 lp#700538, lp#613876, lp#695286, lp#798388)
2849 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
2850 * bug fix: array type intersection handles T and unknown element types
2851 correctly. (lp#1258716)
2852 * bug fix: fix a corner case in array type unparsing that would result in
2853 misleading translations from our internal type representation.
2854 * bug fix: array-rank now sees through union and intersection types.
2856 * bug fix: when DECLARE expressions are in the wrong place, be careful not
2857 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
2859 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
2860 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
2861 instead of signaling an error. (lp#1095483)
2862 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
2863 used to (rarely) introduce duplicate conflict markers in a single
2864 TN/block pair. (lp#1327008)
2866 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
2867 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
2868 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
2869 report of the signaled conditions lists currently running threads.
2870 * enhancement: ported to ARM linux.
2871 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
2872 * enhancement: new contrib sb-mpfr by Stephan Frank.
2873 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
2874 (lp#1315846, thanks to Mark Cox)
2875 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
2876 function-designator to a function only as needed. (lp#1012335)
2877 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
2878 thanks to Thomas Hlavaty)
2879 * bug fix: handle --without-xxx options to make.sh more carefully.
2880 (lp#1246665, thanks to Richard M Kreuter)
2881 * bug fix: prevent maybe-delete-exit from doing semantically broken things
2882 with local exits. (lp#309099, lp#518099, lp#533930)
2883 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
2884 by AMOP. (lp#861004)
2886 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
2887 * optimization: COERCE is now more effecient for more cases when the type is
2888 known at compile-time.
2890 * bug fix: correctly inherit condition initforms. (lp#1300904)
2891 * bug fix: properly pprint literal functions inside nested lists.
2893 * bug fix: more-correctly handle array-type unity (broken for ages, causing
2894 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
2895 reported by jasom in #lisp).
2897 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
2898 * enhancement: printing backtraces respects
2899 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
2901 * optimization: defstruct out-of-line accessor are now as fast as inlined.
2903 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
2904 instances with a test-function (reported by Vivitron in #sbcl)
2905 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
2906 * bug fix: Change COND error message (lp#1254511)
2907 * bug fix: LOAD is no longer confused when called on a directory.
2909 * bug fix: MAKE-CONDITION reports names of missing condition classes
2910 properly (lp#1199223)
2911 * bug fix: restore building with clang. (lp#1293643)
2912 * bug fix: restore building on SPARC (broken since 1.1.15).
2913 * bug fix: improved FreeBSD support.
2914 * bug fix: PPC floating point conversion corrupted stack.
2916 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
2917 * minor incompatible change: improve read/print consistency for pathnames on
2918 Win32, by using the circumflex character #\^ as the escape character.
2920 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
2921 * enhancement: Loading fasls with symbols from an undefined package includes
2922 the name of the symbol in the error message.
2923 * bug fix: problems when redefining classes and doing TYPEP on classes
2924 concurrently. (lp#1272742)
2925 * bug fixes to the x86-64 XCHG instruction:
2926 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
2928 ** it was misencoded when used to exchange EAX with itself.
2929 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
2930 32- and 16-bit variations as NOP.
2931 * bug fix: the disassembler outputs source annotations in the right place
2932 and no longer randomly drops some of them. (lp#1249205)
2933 * bug fix: fix commutative-arg-swap from introducing undumpable structures
2934 into code, prevent code with errors from being compiled. (lp#1276282)
2935 * bug fix: pathnames with :back in their directory component are succeffully
2937 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
2938 wrap functions around. (lp#309086)
2940 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
2941 * new feature: the iterative spilling/coloring register allocator developed
2942 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
2943 in. By default, it only activates for functions that optimize with
2944 (speed 3) and (> speed compilation-speed), but setting
2945 sb-regalloc:*register-allocation-method* to :iterative forces its
2946 execution. The previous behaviour can be obtained by instead setting that
2947 variable to :greedy. Thanks again to Google for their support, and, more
2948 crucially, to Alexandra Barchunova for her hard work.
2949 * optimization: make-array with known element-type and unknown dimensions is
2951 * optimization: make-array with unknown element-type is faster as well.
2953 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
2954 :application-type argument, which can be :console or :gui. :gui allows
2955 having GUI applications without an automatically appearing console window.
2956 * enhancement: reduced conservativism on GENCGC platforms:
2957 conservative roots must be valid-looking tagged pointers or point
2958 within a code object, not merely point to within the allocated part
2959 of a page, in order to pin a page.
2960 * enhancement: support for "Mac Roman" external format.
2961 * enhancement: encapsulation of named generic functions now happens without
2962 altering the identity of the function bound to the name.
2963 * bug fix: Windows applications without the console window no longer misbehave.
2964 (patch by Wilfredo Velazquez, lp#1256034).
2965 * bug fix: modular arithmetic optimizations do not stumble on dead branches
2966 with bad constants. (reported by Douglas Katzman)
2967 * bug fix: CLISP can be used again as a cross-compilation host.
2968 (Thanks to Vasily Postnicov, lp#1261451)
2969 * bug fix: run-program crashed with :directory nil. (lp#1265077)
2971 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
2972 * optimization: complicated TYPEP tests are less opaque to the type
2973 propagation pass. (lp#1229340)
2974 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
2975 * optimization: EQUALP on structures with raw slots (double-float/complex)
2976 no longer conses and is faster.
2977 * optimization: RESTART-CASE expands to more compact code.
2978 Thanks to Jan Moringen. (lp#1249055)
2979 * enhancement: Top-level defmethod without defgeneric no longer causes
2980 undefined-function warnings in subsequent forms. (lp#503095)
2981 * enhancement: Better error messages for system errors on Windows.
2982 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
2983 Cushing. (lp#1249183)
2984 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
2985 specification (multiple integer arguments) and signals a continuable error
2986 if the current SBCL version is lower (older) than the specification.
2988 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
2989 * bug fix: EQUALP now compares correctly structures with raw slots larger
2991 * bug fix: contribs couldn't be built on Windows with MinGW.
2992 * bug fix: Better pathname handling on Windows. (lp#922117)
2993 * bug fix: OPEN reports a more meaningful error when an existing file is
2994 opened for output with :if-exists :new-version. Thanks to Philip
2995 Munksgaard. (lp#455381)
2996 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
2997 CLOS-related errors. (lp#633911)
2998 * bug fix: GC deadlocks caused by concurrent consing on Windows.
3000 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
3001 * optimization: better distribution of SXHASH over small conses of related
3003 * other improvements to SXHASH:
3004 ** use the whole of the positive-fixnum range for SXHASH of fixnums
3005 * enhancement: The error message when calling an undefined alien function
3006 includes the name of the function on x86-64.
3007 * enhancement: sb-ext:run-program now supports :environment on Windows.
3008 * enhancement: ASDF is no longer required to load contribs at runtime.
3010 * enhancement: when called with a symbol, FIND-RESTART no longer calls
3011 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
3012 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
3013 clusters better in some cases
3014 * enhancement: SOME/ANY/other quantification higher-order functions no
3015 longer cons. (lp#1070635)
3016 * bug fix: forward references to classes in fasls can now be loaded.
3018 * bug fix: don't warn on a interpreted->compiled function redefinition
3019 from the same location. (patch by Douglas Katzman, lp#1042405)
3020 * bug fix: Create vectors of proper internal length when reading literal
3021 vectors from FASLs. (Reported by Jan Moringen)
3022 * bug fix: COMPILE can now successfully compile setf functions.
3023 (Reported by Douglas Katzman)
3024 * bug fix: run-program performs more correct escaping of arguments on
3025 Windows. (lp#1239242)
3026 * bug fix: function-lambda-expression on generic functions returns the
3028 * bug fix: (the [type] [constant]) now warns when [constant] matches
3029 [type] except for the number of values. (Reported by Nathan Trapuzzano
3031 * bug fix: signal errors in required cases of slot-definition initialization
3032 protocol. (lp#309072)
3033 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
3034 (thanks to Stelian Ionescu, lp#1242643)
3035 * bug fix: when given a restart object, FIND-RESTART checks whether the
3036 restart is active and, when a condition is supplied, whether the restart
3037 is associated to a different condition (lp#774410)
3039 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
3040 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
3041 shutdown(3). (thanks to Jan Moringen, lp#1207483)
3042 * enhancement: document extensible sequences. (thanks to Jan Moringen,
3044 * optimization: EQUAL and EQUALP transforms are smarter.
3045 (thanks to Elias Martenson, lp#1220084)
3046 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
3047 * bug fix: probe-file now can access symlinks to pipes and sockets in
3048 /proc/pid/fd on Linux. (reported by Eric Schulte)
3049 * bug fix: SBCL can now be built on Solaris x86-64.
3050 * bug fix: Floating point exceptions do not persist on Solaris anymore.
3051 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
3052 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
3054 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
3055 (thanks to Stephan Frank)
3056 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
3057 (thanks to Stephan Frank, lp#1206191)
3058 * bug fix: sb-safepoint can now reliably handle signal interruptions of
3059 foreign code. (lp#1133018)
3060 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
3061 constructors no longer fails to merge actual and default initargs
3062 (thanks to Jan Moringen, lp#1179858)
3063 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
3064 constructors handles non-KEYWORD initialization arguments more correctly.
3065 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
3066 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
3067 * bug fix: class definitions with CPLs inconsistent with their metaclasses
3068 are less likely to destroy the object system's integrity. (lp#309076)
3069 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
3070 standard. (lp#1203585, thanks to Jan Moringen)
3071 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
3072 settings. (lp#1023721)
3073 * bug fix: getting the order of arguments to
3074 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
3075 rather than a failed AVER. (reported by Paul Nathan)
3076 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
3077 arguments during copying on x86 and x86-64; it may still happen on other
3078 platforms when there are more fixed arguments than stack slots.
3079 (reported by Jan Moringen)
3081 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
3082 * enhancement: support building the manual under texinfo version 5.
3084 * enhancement: Windows builds no longer display the "Kitten of Death" message.
3085 A warning is instead appended to the regular banner, and may be muted with
3086 --noinform. (lp#728247)
3087 * enhancement: support building under new linker handling of syscalls under
3088 NetBSD. (thanks to Robert Swindells)
3089 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
3090 (regression since 1.1.9)
3091 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
3092 compiler macro. (thanks to Douglas Katzman).
3093 * bug fix: signal a warning when defining a setf-function when a
3094 setf-expander is already present. (thanks to Douglas Katzman).
3095 * bug fix: improved threading on PPC.
3096 * bug fix: ROOM works again on Windows. (lp#1206456)
3097 * bug fix: Streams were flushed even when there was one byte still left in
3098 the buffer. (lp#910213)
3099 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
3100 either NIL or :ERROR. (reported by Jan Moringen)
3102 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
3103 * enhancement: ASDF has been updated to 3.0.2.
3104 * optimization: stack frames are packed more efficiently on x86oids, which
3105 ought to reduce the frequency of Methuselahn conservative references (it
3106 certainly helps with gc.impure.lisp / BUG-936304 on x86).
3107 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
3108 recognized in modular arithmetic contexts, and compile to native negate,
3109 rather than going through bignums only to keep the low bits.
3110 * bug fix: Compiling potential modularic arithmetic forms does not cause type
3111 errors when some integer types lack lower or upper bounds. (lp#1199127)
3112 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
3113 bitwidth before being used in a non-modular context. (lp#1199428)
3114 * bug fix: Multiple catch/unwind blocks in a single function are now
3115 allocated in the right stack order on win32. (lp#1072739)
3117 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
3118 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
3119 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
3120 * enhancement: disassemble now annotates some previously missing static
3121 functions, like LENGTH.
3122 * enhancement: clean.sh now also cleans doc/internals.
3123 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
3124 print a symbol with a package prefix.
3125 * enhancement: The debugger and backtracing are more robust against buggy
3126 PRINT-OBJECT methods.
3127 * optimization: calls to static functions on x86-64 use less instructions.
3128 * optimization: compute encode-universal-time at compile time when possible.
3129 * optimization: when referencing internal functions as #'x, don't go through
3130 an indirect fdefn structure.
3131 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
3132 * optimization: (mod fixnum) type-checks are performed using one unsigned
3133 comparison, instead of two.
3134 * optimization: enable more modular arithmetic transforms in the presence of
3136 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
3137 when the result is known to be negative.
3138 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
3139 * optimization: comparisons between rationals and constant floats or between
3140 integers and constant ratios are now converted to rationals/integers at
3142 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
3143 * bug fix: problems with NCONC type derivation (reported by Jerry James).
3144 * bug fix: EXPT type derivation no longer constructs bogus floating-point
3145 types. (reported by Vsevolod Dyomkin)
3146 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
3147 addrinfo. (lp#1187041, patch by Jerry James)
3148 * bug fix: uninitialized type-error conditions can now be printed.
3150 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
3151 listening, allowing several tests to run in parallel.
3152 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
3153 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
3155 * bug fix: Specialised SIMD-PACK types can be negated.
3156 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
3157 reported by Eric Marsden)
3158 * bug fix: FP return values from foreign calls are always rounded to single
3159 or double float precision on x87.
3160 * bug fix: Known-safe vector access on x86oids should not fail spuriously
3161 when the index is of the form (+ x constant-positive-integer).
3162 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
3163 * bug fix: backtrace printer no longer tries to create very large lists when
3164 the arg-count register is clobberred by other code. (lp#1192929)
3165 * bug fix: x86 should never signal an FP exception while boxing an FP value,
3166 a situation that lands us into ldb.
3168 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
3169 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
3170 ROOM, plus a few SB-INTROSPECT functions) has been completely
3171 rewritten; it may now exhibit different bugs than before.
3172 * new feature: minimal runtime/compiler intrastructure support for SSE
3173 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
3174 feature :sb-simd-pack. This should enable intrinsics extensions as
3175 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
3176 for maintaining a branch for so long.
3177 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
3178 the working directory of the spawned process.
3179 (lp#791800) (patch by Matthias Benkard)
3180 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
3181 stack-allocated on PPC.
3182 * enhancement: "fixed objects" can now be stack-allocated on PPC.
3183 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
3184 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
3185 also returns VOPs which do not translate any functions, and finds
3186 defoptimizer types ir2convert and stack-allocate-result.
3187 * enhancement: better type derivation for APPEND, NCONC, LIST.
3189 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
3190 heap in a manner similar to the GC rather than its previous ad-hoc
3191 scheme, and is therefore no less and possibly more accurate.
3192 * fixes and enhancements related to Unicode:
3193 ** the character database information has been updated to Unicode 6.2;
3194 ** support for canonical and compatibility decomposition of characters has
3195 been added, along with support for primary composition;
3196 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
3197 NFKD) has been included;
3198 ** querying the character database for code points not defined by Unicode
3199 gives less wrong answers (lp#1178038, reported by Ken Harris)
3200 * enhancement: print intermediate evaluation results for some ASSERTed
3201 expressions. (lp#789497) (patch by Alexandra Barchunova)
3202 * enhancement: x86-64 disassemblies are annotated with unboxed constant
3203 values when there are references to (RIP-relative) unboxed constants.
3204 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
3205 of quadratically with the size of the input in the worst case.
3207 * bug fix: handle errors when initializing *default-pathname-defaults*,
3208 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
3209 decoding errors, or directories being deleted.
3210 * bug fix: Loading a core with a discontiguous dynamic space now correctly
3211 computes the amount of dynamic space used.
3212 * bug fix: disassembler missing ",8" on SHLD
3213 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
3214 that provide an "invalid" stack frame link for the signal handler
3215 itself now use the saved-fp-and-pc mechanism to pick up from the stack
3216 frame in the interrupt (signal) context. This is known to affect
3217 threaded FreeBSD/x86-64.
3218 * bug fix: some LOOP statements couldn't be compiled.
3220 * bug fix: sb-sequence:dosequence works on literal vectors.
3221 * bug fix: errors in generic arithmetic show the assembly routine's
3222 caller on x86 and x86-64. (lp#800343)
3223 * bug fix: Compile-time type errors should never result in COMPILE-FILE
3224 failure. (lp#943953)
3225 * bug fix: Known bad local calls do not cause strange failures when
3226 emitting or dumping code. (lp#504121)
3227 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
3228 codegen errors: type checks are inserted as necessary. (lp#1177703)
3229 * bug fix: Unsigned modular arithmetic is correctly converted into signed
3230 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
3231 * bug fix: a combination of inlined local function with &optional and
3232 recursion no longer causes undescriptive compiler errors. (lp#1180992)
3233 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
3234 when testing for non-zero-ness.
3235 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
3237 * bug fix: Type mismatch for the value of conditional expressions are
3238 correctly reported when detected at compile-time, instead of complaining
3239 about a constant NIL (similar for non-EQ-comparable catch tags).
3240 * bug fix: Referring to INLINE global functions as values should not result
3241 in a compilation failure. (lp#1035721)
3242 * optimization: faster ISQRT on fixnums and small bignums
3243 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
3244 * optimization: On x86-64, the number of multi-byte NOP instructions used
3245 for code alignment is now always minimal.
3246 * optimization: On 64-bit targets, the compiler generates much faster
3247 code for type checks for types known at compile time that are smaller
3248 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
3249 their COMPLEX variants.
3250 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
3251 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
3252 * optimization: ROOM no longer conses so egregiously on non-x86oid
3254 * optimization: associative bitwise operations reassociate patterns like
3255 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
3257 * optimization: quasiquote expressions now perform more constant folding,
3258 instead of consing equal lists at runtime. (lp#1026439)
3259 * optimization: local call analysis of inlined higher-order function
3260 should converge more quickly, resulting in better code for complex
3262 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
3263 integer constants are handled more cleverly, especially when they
3264 can be represented as sign-extended (signed-byte 32). (Based on a
3265 patch by Douglas Katzman)
3266 * optimization: IF/IF conversion should reliably result in sane code
3267 when (some of) the results of the inner IF are always false or
3269 * optimization: On x86oids, variable right shifts of machine words are
3270 compiled into straight SAR/SHR, instead of going through the generic
3273 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
3274 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
3276 * bug fix: :allocation slot option works for condition slots
3278 * bug fix: redefining conditions does not lead to multiple evaluations of
3279 hairy slot initfunctions anymore (lp#1164969)
3280 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
3282 * bug fix: function constants now work as initforms and default initarg
3283 values of conditions (lp#539517)
3284 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
3285 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
3286 * bug fix: no more bogus ## references when pretty printing backquoted
3287 forms with non-trivial structure sharing. (lp#1161218)
3288 * bug fix: Don't signal an error on (setf (documentation nil 'function)
3289 "doc"). Signal a style-warning instead when trying to set documentation
3290 of NIL for all other documentation types. (Reported by Zach
3291 Beane; regression since 2e52fa05.)
3292 * bug fix: modular arithmetic involving large constants and conditionals
3293 should no longer result in spurious dead code elimination. (Reported by
3295 * bug fix: our mach exception handler can seemingly called very early in
3296 the program execution process on OS X 10.8.0. Try and handle that case
3297 robustly, without potentially leaking mach ports too much.
3298 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
3300 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
3301 * enhancement: the continuable error when defknown-ing over extant
3302 fndb entries can be ignored by passing :overwrite-fndb-silently t
3303 as a keyword argument to sb-c:defknown (after attributes). Useful
3304 to allow defknown to be re-loaded. Use with :allow-other-keys t
3305 for backward compatibility.
3306 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
3308 * bug fix: Prevent a make-array transform from modifying source forms
3309 causing problems for inlined code. Thanks to Bart Botta.
3310 (regression since 1.0.42.11-bis)
3311 * bug fix: clear-output calls the correct gray stream routine,
3312 sb-gray:stream-clear-output. (lp#1153257)
3313 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
3315 * bug fix: Better error messages for package operations (lp#1154776)
3316 * bug fix: delete-package on a nonexistent package should signal a cerror.
3317 (regression since 1.0.37.44).
3318 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
3319 (lp#1154946, lp#1072112)
3320 * bug fix: compiling make-array no longer signals an error when the
3321 element-type is an uknown type, a warning is issued instead.
3322 Thanks to James Kalenius (lp#1156095)
3323 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
3324 produces wrong results for some inputs. (Thanks to Jan Moringen.)
3327 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
3328 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
3330 * new feature: package local nicknames. See manual for details.
3331 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
3332 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
3333 * enhancement: easier to use restarts for resolving name-conflicts
3334 resulting from IMPORT, EXPORT, or USE-PACKAGE.
3335 * enhancement: variant DEFPACKAGE forms now signal a full error with
3336 restarts provided for resolving the situation. (lp#891351)
3337 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
3338 DEFPACKAGE forms can now signal a full error with restarts provided for
3339 resolving the situation. See manual for details. (lp#891351)
3340 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
3341 (Thanks to Anton Kovalenko.) (lp#1102748)
3342 * enhancement: backtrace improvements
3343 ** secondary CLOS dispatch functions have better debug names (lp#503081)
3344 ** easier to read method names in backtraces. See
3345 SB-DEBUG:*METHOD-FRAME-STYLE*.
3346 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
3347 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
3348 SB-DEBUG:BACKTRACE-AS-LIST.
3349 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
3350 information is available in less intrusive form as frame annotations.
3351 * enhancement: SB-POSIX now provides MAP-ANON.
3352 * enhancement: test-suite results are colorized, failures in red, unexpected
3353 success in green. Works on Windows and on terminals with ANSI escape code
3354 support. Can be disabled with --no-color.
3355 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
3356 (thanks to James M. Lawrence)
3357 * bug fix: no more unused variable style warnings from RESTART-CASE
3358 macroexpansion (lp#1113859)
3359 * bug fix: no more unused variable style warnings when loading
3360 sb-bsd-sockets.asd (lp#1114681)
3361 * bug fix: deleting a package removes it from implementation-package
3362 lists of other packages.
3363 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
3364 This does not fix the occasional "interrupt already pending" issue, though.
3365 * bug fix: (setf (documentation 'x 'function)) and
3366 (setf (documentation #'x t)) set documentation in different places.
3367 (regression since 1.0.43.63)
3368 * bug fix: build on newer glibc. (lp#1095036)
3370 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
3371 * optimization: LOOP expressions using "of-type character" have slightly
3372 more efficient expansions.
3373 * bug fix: very long (or infinite) constant lists in DOLIST do not result
3374 in very long compile times or heap exhaustion anymore. (lp#1095488)
3375 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
3376 * bug fix: adjust-array ignored :initial-element for simple-vectors.
3378 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
3379 longer cause infinite loops (on circular data) or violate eqlity
3380 constraints. (lp#1099708)
3381 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
3383 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
3384 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
3386 * enhancement: support for C-c to interrupt the foreground thread
3387 on Windows. (Thanks to Anton Kovalenko.)
3388 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
3389 * enhancement: Safepoint builds on POSIX platforms can now optionally be
3390 built without pseudo-atomic sequences and their run-time overhead.
3391 * enhancement: Threads created outside of Lisp can enter Lisp through
3392 alien callbacks and appear as Lisp threads for the duration of that
3393 function invocation. On safepoint builds only.
3394 * enhancement: Miscellaneous improvements to namestrings and underlying
3395 calls to OS functions for file system access on Windows. (Thanks to
3397 * enhancement: The MSI installer support for Windows now uses Windows
3398 Installer XML at least version 3.5 and includes various usability
3399 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
3400 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
3401 on Windows. (Thanks to Anton Kovalenko.)
3402 * enhancement: The Windows backend now supports the x86-64 platform.
3403 (Thanks to Anton Kovalenko.)
3404 * bug fix: fasls are now once again directly executable (on platforms
3405 supporting shebang lines, with a suitably-installed sbcl).
3406 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
3407 * bug fix: Fix CAS access to slots of direct instances of structure classes
3408 in the presence of subclasses sharing the same conc-name.
3409 * bug fix: Logical pathname namestrings on Windows have been changed to
3410 be lower-case, to minimize differences between POSIX and Windows.
3412 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
3413 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
3414 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
3415 (NT 5.0) is no longer being maintained.
3416 * notice: Starting with this version, SBCL on Windows no longer supports
3417 building with disabled thread support.
3418 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
3419 * enhancement: New feature sb-dynamic-core allows the runtime to be
3420 rebuilt or relocated without requiring changes to the core file on
3421 all linkage table platforms. Required on Windows. (Thanks to Anton
3423 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
3424 * enhancement: I/O on Windows unnamed pipes is interruptible
3425 asynchronously using interrupt-thread, timers when running on Windows NT
3426 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
3428 * enhancement: Support for the experimental safepoint-based stop-the-world
3429 protocol on the PowerPC platform.
3430 * bug fix: Non-blocking reads from the Windows console were not necessarily
3431 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
3432 * bug fix: stability of threads on Windows has been improved upon through
3433 an updated stop-the-world protocol (thanks to Anton Kovalenko).
3435 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
3436 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
3437 (COMPILE and COMPILE-FILE still do.)
3438 * optimization: the SPARC backend now supports the precise generational
3439 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
3440 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
3441 * enhancement: add experimental support for the SB-THREAD feature and the
3442 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
3443 Threads are enabled by default, and this version of SBCL is considered
3444 to be the last and final release to officially support building with
3446 * optimization: The compiler no longer rotates loops in some cases where
3447 this transformation actually lead to worse code being generated.
3448 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
3449 symbol-macros by lexical bindings.
3450 * bug fix: stack allocation was prevented by high DEBUG declaration in
3452 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
3453 (thanks to SANO Masatoshi)
3454 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
3455 :JUNK-ALLOWED was true.
3456 * bug fix: type derivation inferred overly conservative types for
3457 unions of array types. (lp#1050768)
3459 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
3460 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
3461 source annotation of DISASSEMBLE output. Defaults to T.
3462 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
3463 WAIT-P argument added to WITH-RECURSIVE-LOCK.
3464 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
3466 * enhancement: Optional features (not enabled by default) allow the
3467 use of signals for inter-thread synchronization to be reduced on certain
3468 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
3469 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
3470 to test these experimental features. Known remaining bugs include minor
3471 thread safety issues, less timely freeing of memory by GC, and certain
3472 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
3473 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
3474 comparisons, particularly on almost-sorted inputs.
3475 * bug fix: Reading floats with large exponents no longer takes too much time
3476 before reporting that the exponent is too large.
3477 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
3478 correctly when the received datagram is larger than the provided buffer.
3479 (lp#1023438, thanks to Robert Uhl)
3480 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
3481 a SYMBOL-VALUE form with a constant symbol argument.
3482 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
3483 into a DEFCAS defined place was used as the place.
3484 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
3485 for from bit-vectors.
3486 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
3487 lead to internal errors or crashes (lp#1058799).
3488 * documentation: a section on random number generation has been added to the
3491 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
3492 * enhancement: implicit generic function warnings now specify the package
3493 in which the new generic function is being created.
3494 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
3495 updates of CAS-able places (similar to Clojure's swap!).
3496 * enhancement: run-program no longer decodes and re-encodes environment when
3497 :environment argument is not provided. (lp#985904)
3498 * enhancement: errors during compiler-macro expansion no longer cause
3499 runtime errors, only a compile-time warning, otherwise behaving as if
3500 the compiler macro had declined to expand.
3501 * optimization: On x86-64, code alignment of block headers is done with
3502 multi-byte NOPs now instead of repetitions of the single-byte NOP.
3503 * optimization: MAP-INTO is substantially faster when the target sequence is
3504 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
3505 thanks to James M. Lawrence)
3506 * optimization: the compiler no longer heap-conses to check exits in cases
3507 where the exit function is dynamic extent, or when it can prove the exit
3508 function cannot escape. (lp#1002534)
3509 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
3510 element type, and vectors that aren't SIMPLE-ARRAYs.
3511 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
3512 speed (around 1/3 the time in some cases), and a little better in terms of
3513 comparison calls. (Thanks to Takeru Ohta)
3514 * bug fix: On SPARC, a limitation on the number of code constants emittable
3515 by the compiler has been lifted, allowing certain long functions to
3516 compiled and assembled which had previously been unsupported; fixes
3517 cl-bench on this ISA (lp#1008996).
3518 * bug fix: potential for infinite recursion during compilation of CLOS slot
3519 typechecks when dependency graph had loops. (lp#1001799)
3520 * bug fix: error forms reported with some program-errors were not escaped
3522 * bug fix: functions from EVAL are now on more equal footing with functions
3523 from COMPILE. (lp#1000783, lp#851170, lp#922408)
3524 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
3525 objects as its :METHOD-COMBINATION argument, not just lists designating
3526 method combinations. (lp#936513)
3527 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
3529 * bug fix: restore build on solaris/sparc. (lp#1008506)
3530 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
3531 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
3532 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
3533 as keyword arguments no longer accidentally match unevaluated symbols
3535 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
3536 parameter was zero, now it signals an error. (lp#905817, fixed since
3538 * bug fix: run-program with :pty t no longer makes the pty as the process's
3539 controling terminal.
3540 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
3543 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
3544 * RANDOM enhancements and bug fixes:
3545 ** bug fix: the range and distribution of random integers could be
3546 catastrophically wrong when the compiler derived the type of its
3547 argument as a disjoint set of small integers.
3548 ** bug fix: the distribution of random integers is now completely
3549 uniform even when the specified limit is not a power of two.
3550 (Previously some values could be about 0.1 % more probable than
3551 others in the worst case.) (lp#309467)
3552 ** RANDOM on large integer arguments is generally faster and conses
3553 less than before; this is visible for fixnums above a length of
3554 about 24 bits, but extremely so for bignums: the old implementation
3555 used time and space quadratical in the size of the argument there,
3556 the new one is linear.
3557 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
3558 main entry point, SB-EXT:QUIT is deprecated.
3559 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
3560 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
3561 * enhancement: FASL loading no longer grabs the world-lock.
3562 * enhancement: GENCGC reclaims space more aggressively when objects being
3563 allocated are a large fraction of the total available heap space.
3565 * enhancement: backtraces show the correct number of arguments for frames
3566 called with too many arguments.
3567 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
3569 * enhancement: ASDF has been updated 2.21.
3570 * optimization: fewer uses of full calls to signed modular functions.
3572 * optimization: typechecking alien values is typically 5 x faster.
3573 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
3575 * bug fix: file compilation performance issues when dumping subtypes
3576 of CHARACTER (lp#994487)
3577 * bug fix: fixed disassembly of some SSE instructions on x86-64.
3578 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
3579 OPEN. (lp#969352, thanks to Kambiz Darabi)
3580 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
3582 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
3583 classoid even if X was not the proper name of the class. (lp#941102)
3584 * bug fix: declaration leakage between lexical environments due to careless
3585 use of NCONC in MAKE-LEXENV. (lp#924276)
3586 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
3587 *default-pathname-defaults* contains NAME or TYPE components.
3588 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
3589 from CL package, e.g. (loop . 10).
3590 * bug fix: run-program with existent or non-existent files for :output or
3591 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
3592 returns NIL instead of signalling an obscure error.
3593 * bug fix: fix miscompilation of some logand forms with large constant
3594 arguments. (lp#974406)
3595 * bug fix: account for funcallable-instance objects properly in ROOM.
3596 * bug fix: incorrect octets reported for c-string decoding errors.
3598 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
3600 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
3601 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
3602 allowing faster release of memory back to the OS. (lp#991293)
3603 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
3604 existing deadline for the dynamic scope of its body.
3605 * bug fix: compiler-internal interval arithmetic needed to be more
3606 conservative about open intervals when operated on by monotonic but not
3607 strictly-monotonic functions. (lp#975528)
3608 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
3609 it's also slightly faster. (lp#998926)
3610 * bug fix: better error messages for malformed declarations.
3612 * bug fix: define-condition didn't return the name of the defined condition.
3614 ** improved docstrings: REPLACE (lp#965592)
3616 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
3617 * bug fix: fix copy-structure. When copying from stack to heap, garbage
3618 could end up in the heap making GC unhappy.
3619 (Thanks to James Knight, lp#911027)
3621 ** SBCL can now be built using Clang.
3622 ** ASDF has been updated 2.20.
3623 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
3624 * bug fix: don't complain about a too-hairy lexical environment for inlining
3625 when the function has never been requested for inlining. (lp#963530)
3627 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
3628 * enhancements to building SBCL using make.sh:
3629 ** --fancy can be specified to enable all supported feature enhancements.
3630 ** --with-<feature> and --without-<feature> can be used to specify
3631 which features to build with.
3632 ** --arch option can be used to specify the architecture to build for.
3633 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
3634 full-blows cross-compilation.)
3635 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
3636 which allows specifying name of the default interning package for the
3638 * enhancement: when *READ-EVAL* is true, arrays with element type other than
3639 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
3640 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
3641 null alien when malloc() fails. (lp#891268)
3642 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
3643 conditions can be conveniently accessed through function with the same
3644 name, analogously to CONTINUE.
3645 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
3646 from the printer by type, causing an error marker to be printed instead.
3647 (Thanks to Attila Lendvai)
3648 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
3649 generally behave better when errors occur during printing.
3650 * enhancement: the test runner now takes a --report-skipped-tests argument
3651 to report the individual tests skipped as well as the number of skipped
3653 * enhancement: undefined functions now appear in backtraces as ("undefined
3654 function") instead of ("bogus stack frame") on x86oids.
3655 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
3656 deadlock errors are reported in an easier-to-decipher manner.
3657 * enhancement: DESCRIBE on type designators reports the expansion in more
3659 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
3660 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
3661 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
3662 * enhancement: better disassembly of segment-prefixes on x86 and other
3663 instruction prefixes (e.g. LOCK) on x86 and x86-64.
3664 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
3665 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
3666 * optimization: SUBSEQ on vectors of unknown element type is substantially
3668 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
3669 be stack-allocated. (lp#902351)
3670 * optimization: the compiler is smarter about representation selection for
3671 floating point constants used in full calls.
3672 * optimization: the compiler no longer refuses to coerce large fixnums to
3673 single floats inline, except on x86 where this limitation is still
3675 * optimization: truncation operations on integers with constant divisor
3676 arguments 1 and -1 are optimized away.
3677 * bug fix: deadlock detection could report the same deadlock twice, for
3678 two different threads. Now a single deadlock is reported exactly once.
3679 * bug fix: interval-arithmetic division during type derivation did not
3680 account for signed zeros.
3681 * bug fix: compiler error when typechecking a call to a function with
3682 non-constant keyword arguments.
3683 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
3684 * bug fix: condition slot accessors no longer cause undefined function
3685 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
3686 form that defines them. (lp#896379)
3687 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
3688 by ANSI. (lp#894202)
3689 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
3690 bogusly report NIL, T.
3691 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
3692 required arguments ignored and performed assignments to others.
3694 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
3695 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
3696 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
3697 * bug fix: redefining a function whose previous definition contained an
3698 unknown type no longer causes a style-warning. (lp#806243)
3699 * bug fix: undefined functions now appear in backtraces as ("undefined
3700 function") instead of ("bogus stack frame") on non-x86oids.
3701 * bug fix: backtraces are no longer cut off at ("undefined function") when
3702 called under certain circumstances (involving a caller-allocated stack
3704 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
3705 systems. (regression since 1.0.53)
3706 * bug fix: GC deadlocks from dladdr() on certain platforms.
3707 * bug fix: broken standard streams no longer automatically cause recursive
3708 errors on debugger entry.
3709 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
3710 (regression since 1.0.53)
3711 * bug fix: attempts to stack allocate a required argument to a function with
3712 an external entry point caused compiler-errors.
3713 * bug fix: compiler notes for failed stack allocation for a function argument
3714 no longer claim to be unable to stack allocate the function.
3715 * bug fix: COERCE now signals a type-error on several coercions to
3716 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
3717 * bug fix: missing failure-to-stack-allocate compiler notes for some
3718 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
3719 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
3721 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
3723 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
3724 * minor incompatible changes:
3725 ** RENAME-FILE on a symbolic links used to rename the linked-to file
3726 instead of the link.
3727 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
3728 directory, but now signal an error instead. Use TRUENAME to resolve the
3729 pathname if you wish to delete the linked directory, and DELETE-FILE if
3730 you wish to delete the
3731 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
3732 symbols associated with it will trigger a compile-time warning.
3733 * thread-related enhancements:
3734 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
3735 Many thanks to generous donors!)
3736 ** Threading is now more reliable on non-Linux platforms. We still don't
3737 consider threads on non-Linux platforms good enough to enable them by
3738 default, but they're in a clearly better shape now.
3739 ** Deadlines supported now on all platforms.
3740 ** All blocking functions in the threading API now have a :TIMEOUT
3742 ** Semaphore notification objects have been added to SB-THREAD.
3743 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
3744 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
3745 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3746 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
3747 using an API anologous to defining new SETFable places.
3748 * GC-related enhancements and bug fixes:
3749 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
3750 and Gb suffixes. Default is megabytes as before.
3751 ** on GENCGC targets, the default dynamic space size is now 512Mb for
3752 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
3753 exception, defaulting to mere 444Mb to fit under default ulimits.) The
3754 new defaults are in place to prevent hitting swap on low-end systems.
3755 Use build-time option --dynamic-space-size to build an SBCL with
3756 another default, or the runtime option to adjust the size at startup: a
3757 good size is at most equal to the amount of physical memory the system
3759 ** on GENCGC targets, nursery and generation sizes now default to 5% of
3761 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
3762 refuses to create SIMPLE-FUN objects.
3763 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
3765 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
3766 validation of pointer objects as GENCGC does, instead of a
3767 comparatively weak bounds-check against the heap spaces.
3768 * SB-BSD-SOCKETS bug fixes:
3769 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
3770 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
3771 systems with getaddrinfo().
3772 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
3773 safe outside systems with getaddrinfo().
3774 * enhancement: ASDF has been updated 2.019.
3775 * enhancement: special-case TCO prevention for functions which never return
3776 extended to untrusted types, keeping one more frame's worth of debug
3777 information around in many cases.
3778 * enhancement: debug-names of anonymous and local function are more
3779 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
3780 * enhancement: on win32, ABS of complex floats guards better against
3781 overflows. (lp#888410)
3782 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
3783 process exiting with code 1. (lp#676987)
3784 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
3785 the system where on the filesystem the SBCL sources themselves are
3786 located. (Thanks to Zach Beane)
3787 * enhancement: the compiler is now able to derive tighter bounds for
3788 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
3789 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
3790 correctly, even on wide-fixnum builds. (lp#887220)
3791 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
3792 resolved to directories.
3793 * bug fix: type mismatch when assigning to lexical variables no longer
3794 result in fasl-dumping internal type objects. (lp#890750)
3795 * bug fix: type mismatch on (SETF AREF) and function return values no
3796 longer result in fasl-dumping internal type objects.
3797 * bug fix: With several combinations of argument types, for example (EXPT
3798 <integer> <(complex double)>), EXPT now uses double-precision throughout
3799 instead of partially calculating only to single-precision. (lp#741564;
3800 thanks to Lutz Euler)
3801 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
3802 objects when interrupted by GC on PPC.
3804 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
3805 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
3806 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
3807 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
3808 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
3809 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
3810 targets is now 63 bits (up from 61).
3811 * enhancement: DESCRIBE now reports a lambda-list and source location
3812 for complext setf-expanders.
3813 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
3814 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
3815 of multiple-valued places to be set to NIL, instead of signalling an
3816 error (per a careful reading of CLHS 5.1.2.3).
3817 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
3818 * bug fix: repair crash in x86oid darwin signal handling emulation
3819 when built with certain compilers.
3820 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
3821 rotation arguments on x86-64. (lp#882151)
3822 * bug fix: low-level control flow optimisations could result in bogus
3823 code in functions with tail and non-tail calls to local functions on
3824 x86oids. (lp#883500)
3825 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
3826 to emit literal characters > (code-char 4095), for comparisons with
3827 constant characters.
3828 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
3829 on 64 bit platforms. (lp#881445)
3830 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
3831 delete the wrong file when using relative pathnames. (lp#882877)
3832 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
3833 sequences and :KEY NIL.
3835 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
3836 * enhancement: ASDF has been updated to version 2.017.
3837 * enhancement: the --core command line option now accepts binaries with
3839 * enhancement: when built with :sb-core-compression, core files (regular
3840 or executable) can be compressed with zlib. Use the :COMPRESSION
3841 argument to SAVE-LISP-AND-DIE to specify a compression level.
3842 * enhancement: --[no-]merge-core-pages determines whether the runtime
3843 hints the operating system that identical core pages between SBCL
3844 processes should share the same physical memory. Default is to only
3845 enable this for compressed cores.
3846 * optimization: SLEEP no longer conses.
3847 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
3848 or bit-vectors when using the standard pretty-print dispatch table.
3849 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
3851 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
3852 AREF, CHAR, etc. (lp#826971)
3853 * bug fix: compiler-errors causes by integer arguments with composed of
3854 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
3855 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
3856 expressions. (lp#770184)
3857 * bug fix: complex single float literals are correctly aligned when used
3858 as arguments of arithmetic operators.
3859 * bug fix: on 32-bit platforms, rounding of double floats larger than a
3860 fixnum is correct. (reported by Peter Keller)
3861 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
3862 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
3864 * bug fix: redefining classes such that slots with custom allocation are
3865 added or removed works again.
3867 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
3868 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
3869 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
3870 MAKE-SOCKET-STREAM if using SERVE-EVENT.
3871 * enhancement: added support for socket keepalive timeout intervals
3872 and probe counts on Linux.
3873 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
3874 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
3875 * enhancement: added new toplevel options --quit and --non-interactive
3877 * enhancement: the Windows port of SBCL now builds and runs on Wine
3878 (thanks to Anton Kovalenko).
3879 * enhancement: more, and more correct, SSE instruction definitions on
3880 x86-64 (thanks to Alexander Gavrilov).
3881 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
3882 to help the processor execute spin loops, when applicable. Currently
3883 implemented for x86 and x86-64.
3884 * optimization: unsigned integer divisions by a constant are implemented
3885 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
3886 * optimization: improved type-derivation for LOAD-TIME-VALUE.
3887 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
3888 instructions. (lp#814688)
3889 * bug fix: COERCE to unfinalized extended sequence classes now works.
3890 (reported by Jan Moringen; lp#815155)
3891 * bug fix: a compiler error during typecheck generation, reported by Eric
3892 Marsden. (lp#816564)
3893 * bug fix: obsolete instance protocol fires when shared slots are added
3895 * bug fix: fixed-format floating point printing with scaling factors.
3897 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
3898 backtraces. (lp#818460)
3899 * bug fix: better backtraces for interrupted syscall frames on x86.
3901 * bug fix: SSE comparison instructions can be disassembled even when one
3902 operand is in memory. (lp#814702)
3903 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
3904 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
3905 type information associated with the VALUES form.
3906 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
3908 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
3909 first write (lp#561642).
3910 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
3911 * bug fix: bound propagation involving conversion of large bignums to
3912 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
3914 * bug fix: &REST to &MORE conversion still works in unsafe call to known
3915 functions; reported by Lutz Euler (lp#826459).
3916 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
3919 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
3920 * enhancement: errors from FD handlers now provide a restart to remove
3921 the offending handler.
3922 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
3924 * enhancement: location of user or system initialization file can now easily
3925 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
3926 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
3927 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
3928 the thunk, as a keyword argument, :arguments.
3929 * enhancement: constraint propagation is simplified (and sped up) when
3930 COMPILATION-SPEED > SPEED.
3931 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
3932 * enhancement: debugger understands &MORE arguments better.
3933 * optimization: extracting bits of a single-float on x86-64 has been
3934 optimized. (lp#555201)
3935 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
3936 when (> SPEED SPACE).
3937 * optimization: local call trampolines (x86 and x86-64) are emitted
3939 * optimization: implicit value cells for dynamic-extent closed-over bindings
3940 on x86 and x86-64 can hold unboxed values as well.
3941 * meta-optimization: improved compilation speed, especially for large
3942 functions. (lp#792363 and lp#394206)
3943 * bug fix: bound derivation for floating point operations is now more
3944 careful about rounding possibly closing open bounds. (lp#793771)
3945 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
3946 backwards incompatible change in 1.0.48.27)
3947 * bug fix: occasional debugger errors in when a type-error occured in a
3948 function with dynamic-extent &rest list.
3949 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
3950 boa-construtors can be used to initialized structure slots.
3951 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
3952 (lp#795705, regression)
3953 * bug fix: DIRECTORY works better on logical pathnames.
3954 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
3955 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
3956 * bug fix: the compiler no longer constant-folds NaNs in
3957 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
3958 * bug fix: FORMAT now handles floating point rounding correct, eg.
3959 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
3961 * bug fix: style warning during lambda-list introspection of generic
3962 functions with both optional and key argments.
3963 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
3964 folding. (lp#729765)
3965 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
3968 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
3969 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
3970 interrupts for its body.
3971 * enhancement: source locations are now available for files loaded as
3972 source, compile-time-too evaluation, and initialization files.
3973 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
3974 virtual source-file information, eg. overriding input-file of COMPILE-FILE
3975 when a temporary file is used for compilation.
3976 * enhancement: ASDF has been updated to version 2.015.3.
3977 * enhancement: backtraces involving frames from the default evaluator are
3979 * enhancement: RUN-PROGRAM works with user-defined binary input and output
3981 * enhancement: more informative compile-time warnings and runtime errors for
3982 type-errors detected at compile-time.
3983 * enhancement: deadlock detection for mutexes and spinlocks.
3984 * enhancement: dynamic-extent for &rest lists stack allocate only their
3985 spines, not their argumets. While portable code should not rely on this,
3986 particularly in combination with inlining, it should make dynamic-extent
3987 easier to use safely.
3988 * enhancement: SB-POSIX improvements:
3989 ** WNOHANG and WUNTRACED are exported.
3990 ** SYSCALL-ERROR now also provides the name of the failing system call.
3991 * enhancement: --script improvements:
3992 ** errors on standard input, output, and error streams are handled and
3993 cause scripts to exit silently, making them easier to use in shell
3995 ** backtraces from scripts now go to standard error instead of the
3996 terminal even if one is available.
3997 ** --script can be an argument, causing the script to be loaded from
3999 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
4000 strings to foreign memory.
4001 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
4002 a file, making it easier to understand heap dynamics.
4003 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
4004 allows the compiler to automatically elide rest-list allocation so long as
4005 the call sites are in functions that the compiler knows cannot escape.
4007 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
4008 especially in safe code when none of the required arguments have changed
4010 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
4011 uninterruptible, as well as blocking reads from socket streams created
4012 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
4013 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
4014 from the to-char if the from-char is not a dispatch-macro character.
4015 * bug fix: references to undefined variables in function calls that are
4016 optimized away now signal a runtime error. (lp#722734)
4017 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
4018 types from a function defined in the same file. (regression from
4020 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
4022 * bug fix: spurious errors during QUIT when standard streams were closed.
4024 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
4025 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
4026 years, is now no longer supported.
4027 * enhancement: read() and write() have been added to SB-POSIX.
4028 * enhancement: types of DEFSTRUCT constructors are proclaimed more
4029 accurately, allowing better typechecking of call-sites.
4030 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
4031 are no longer caught. (reverted to pre 1.0.34 behaviour)
4032 * optimization: slightly faster ISQRT. (lp#713343)
4033 * bug fix: better support for Solaris /bin/sh in sh-based tests.
4034 * bug fix: TRACE behaves better when attempting to trace undefined
4035 functions. (lp#740717)
4036 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
4037 to (FUNCALL #'(LAMBDA ...) ...).
4038 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
4039 a compile-time error. (lp#720382)
4040 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
4042 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
4043 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
4044 optimization. (regression from 1.0.45.18/1.0.46.15)
4045 * bug fix: package locks did not protects against compile-time side-effects
4046 of DEFUN. (lp#675584)
4047 * bug fix: --dynamic-space-size argument is validated more carefully.
4049 * bug fix: memory fault from printing a malformed simple-condition.
4051 * bug fix: redefining classes so that slot-definition classes change now
4052 engages the obsolete instance protocol. (lp#766271)
4053 * bug fix: constant improper lists could break source coverage recording.
4055 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
4056 could exhaust stack.
4058 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
4059 * bug fix: fix mach port rights leaks in mach exception handling code on
4060 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
4062 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
4063 * enhancement: redefinition warnings for macros from different files. (lp#434657)
4064 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
4065 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
4066 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
4067 processed using EVAL -- now the appropriate toplevel form is reported instead.
4068 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
4069 declarations. (lp#726331)
4070 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
4071 that NIL/NULL is excluded from the type.
4072 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
4074 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
4075 and its compatriots.
4076 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
4077 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
4078 stack-allocated values out of their dynamic-extent. (lp#310175)
4079 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
4080 x86-64 builds caused a type-error.
4081 * bug fix: calling COMPILE with something else than a lambda-expression as the
4082 second argument reports a more sensible error. (lp#718905)
4083 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
4084 are detected. (lp#520607)
4085 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
4087 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
4088 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
4089 methods. (regression from 1.0.45.18)
4090 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
4091 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
4092 * bug fix: several foreign functions accepting string also accepted NIL and
4093 consequently caused a memory fault at 0 now signal a type-error instead.
4095 * bug fix: under rare circumstances, constraint propagation could rewrite a
4096 variable reference to refer to a variable not in scope, causing an error
4097 during physical environment analysis when attempting to close over the
4098 variable. (lp#551227)
4099 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
4101 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
4102 * enhancement: largefile support on Solaris.
4103 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
4104 arguments (lp#710017)
4105 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
4106 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
4108 * optimization: ERROR and CERROR are approximately 5 times faster.
4109 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
4110 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
4111 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
4112 up instance creation in those cases.
4113 * optimization: arithmetic operations with multiple constant arguments in now
4114 have them reduced at compile-time. (lp#676414)
4115 * optimization: determining current character position on string-streams for
4116 pretty-printing was overly slow.
4117 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
4118 lifetime analysis to overwrite closed-over variables (lp#681092).
4119 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
4120 were not handled correctly (lp#713063).
4121 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
4123 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
4124 mistake. (lp#667297).
4125 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
4126 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
4127 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
4128 unintern the wrong symbol with the same name. (lp#693796)
4129 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
4130 making it possible to restore the initial table if it has been messed up.
4133 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
4134 * enhancement: ~/ and ~user/ are treated specially in pathnames.
4135 Refer to documentation for details.
4136 * enhancement: ASDF has been updated to version 2.010.
4137 * optimization: mutated closed-over variables that are only accessed by
4138 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
4139 declared to be DYNAMIC-EXTENT) are stored directly in their containing
4140 stack frame, rather than allocating a VALUE-CELL (lp#586103).
4141 * optimization: UNWIND-PROTECT cleanup functions are now declared
4143 * bug fix: backtracing function with &REST arguments now shows the full
4144 argument list. (lp#310173)
4145 * bug fix: return types for functions with complex lambda-lists are now
4146 derived properly (lp#384892)
4147 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
4148 long string arguments slowed the compiler down to a crawl.
4149 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
4150 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
4151 in the DEFMETHOD body.
4152 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
4153 messages, being instead replaced with the corresponding function name.
4154 * bug fix: don't derive overly complex unions of numeric types for arithmetic
4155 operators. (lp#309448)
4157 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
4158 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
4159 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
4160 * enhancement: ALLOCATION-INFORMATION also provides the page the object
4162 * enhancement: default dynamic-space size can be configured at build-time
4163 without touching source, using the --dynamic-space-size argument to make.sh.
4164 * enhancement: DESCRIBE recognizes symbols naming optimization policy
4165 qualities, and mentions ALWAYS-BOUND declarations.
4166 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
4168 * enhancement: ASDF has been updated to 2.009.
4169 * enhancement: the system detects known type-erros in calls better,
4170 signalling a full warning about violated proclaimed FTYPEs and violations
4171 of derived FTYPEs within the same file, including self-calls.
4172 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
4173 * optimization: constant-folding exploits numeric and character types, in
4174 addition member types.
4175 * optimization: numeric, character and member types that are inhabited by
4176 exactly one value are tested with EQL.
4177 * optimization: more conditional branches are eliminated during IR1.
4178 Branches are simplified before performing if/if-conversion, and simple
4179 equivalent branches (that only read the same constant or variable) are
4181 * improvements to the Windows port:
4182 ** change: canonical unparsing form for pathname namestrings now uses / as
4183 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
4184 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
4185 on Windows. (thanks to Kalyanov Dmitry)
4186 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
4188 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
4189 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
4190 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
4191 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
4193 * bug fix: interrupts arriving during CL:OPEN caused an error.
4194 * bug fix: overeager character buffering could cause input to block
4195 spuriously when reading from a pipe (lp#643686)
4196 * bug fix: more efficient timer expiry should avoid starvation on systems
4197 where number of SIGALRMs per second is restricted. (lp#375515)
4198 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
4199 * bug fix: compile-times no longer scale linearly with the size of
4200 quoted lists in source-code. (lp#654289)
4201 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
4202 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
4203 so badly. (lp#654485)
4204 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
4205 an error for eg. STRUCTURE. (lp#458015)
4206 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
4207 (lp#613871, thanks to Roman Marynchak)
4208 * bug fix: more reliable &REST list type derivation. (lp#655203)
4209 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
4210 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
4211 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
4212 also declared NOTINLINE. (lp#655581)
4213 * bug fix: the compiler could attempt to emit constant left shifts of
4214 greater value than n-word-bits. (lp#309063)
4215 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
4216 type information for the function being set. (lp#659220)
4217 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
4218 containing self-calls were recompiled with a new signature, and failed
4219 to warn when a self-call using the old signature was left in. (lp#655126)
4220 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
4221 :DEFAULT when the default external had character size other than 8 bits.
4223 * bug fix: derived types of functions in the same file were implicitly
4224 trusted, leading to potential heap corruption when those function were
4225 defined incompatibly. (lp#657499)
4226 * bug fix: existing ASDF source registries are ignored when building
4227 contribs (lp#659105)
4228 * bug fix: short-form DEFSETF checks that the second argument is a symbol
4229 (lp#655824, thanks to Roman Marynchak)
4230 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
4231 package-lock violation was detected. (lp#660752)
4232 * bug fix: the system can store different docstrings for a single function
4233 under different names. (lp#661631, regression from 1.0.29.24)
4234 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
4235 properly. (lp#384801)
4236 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
4237 of specified length could confuse the type derivation in unsafe code.
4239 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
4240 fork with multiple Lisp threads running is made on every platform,
4241 not just Darwin. (lp#451111)
4242 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
4243 around when core was saved, which could cause undefined behaviour when the
4245 * bug fix: Allow UNTRACE of functions that are no longer defined
4246 (lp#667657, thanks to Attila Lendvai)
4247 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
4248 compile-time warning (lp#664373, thanks to Stas Boukarev)
4250 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
4251 * incompatible change: FD-STREAMS no longer participate in the serve-event
4252 event-loop by default. (lp#316072)
4253 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
4254 affects streams from CL:OPEN.
4255 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
4256 default, but this is liable to change: applications needing serve-event
4257 for socket streams should explicitly request it using :SERVE-EVENTS T
4259 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
4261 * enhancement: CLOS effective method functions and defclass slot typechecking
4262 function now have debug names for use in backtraces and profiles.
4263 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
4265 * enhancement: symbols are printed using fully qualified names in several
4266 error and warning messages which are often associated with package
4267 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
4268 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
4269 thanks to Andrew Golding)
4270 * bug fix: reading /proc files on Linux works. (lp#425199)
4271 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
4273 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
4274 breaking code that tried to write the value of a printer control variable.
4275 (lp#581564, thanks to Stas Boukarev)
4276 * bug fix: WRITE compiler macro did not handle output stream designators
4277 correctly. (lp#598374, thanks to Stas Boukarev)
4278 * bug fix: better availability of names of foreign functions in backtraces
4279 on Linux. (lp#626962, thanks to Stas Boukarev)
4280 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
4281 lp#627581, thanks to Josh Elsasser and Jim Wise)
4282 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
4283 thanks to Josh Elsasser)
4284 * bug fix: using aliases for builtin classes as defmethod specializers
4285 without adding DEFTYPEs for them works. (lp#618387)
4286 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
4288 * bug fix: legally dynamic-extent lists and vectors used as
4289 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
4290 * bug fix: inline-expansion creating references to dead lambda-variables
4291 (lp#454681, thanks to Alexey Dejneka)
4292 * bug fix: better error message for bogus numerical arguments to RANDOM.
4293 (lp#598986, thanks to Stas Boukarev)
4294 * bug fix: the compiler occasionally inlined references from incompatible
4295 environments occurs. (lp#308951)
4296 * bug fix: the compiler threw an error when trying to compile a local
4297 function (labels or flet) known to take a specialized complex argument.
4298 (not in launchpad, reported by sykopomp in #lispgames)
4299 * bug fix: package-locks failed to protect against compile-time effects of
4300 DEFUN when the symbol previously had a macro definition. (lp#576637)
4301 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
4302 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
4303 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
4304 * bug fix: evaluation in debugger REPL works using the global context when
4305 in frames that do not have sufficient debug information.
4306 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
4308 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
4310 * bug fix: interrupt taking longer than the requested period caused SLEEP
4311 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
4313 changes in sbcl-1.0.42 relative to sbcl-1.0.41
4315 ** Cross-compilation host is now specified to make.sh using
4316 command-line argument --xc-host=<command> instead of a positional
4317 argument. (thanks to Daniel Herring)
4318 ** Install location can be specified to make.sh using command-line
4319 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
4320 * optimization: The default implementation of
4321 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
4322 * enhancement: Explicit memory barrier operations are now available for use
4323 by multithreaded code. See documentation for details.
4324 * enhancement: Experimental support for threading on Linux/PPC.
4325 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
4326 * bug fix: EXPT signals an error if first argument is a zero and second
4327 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
4328 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
4329 (lp#576594, thanks to Roman Marynchak)
4330 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
4331 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
4333 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
4334 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
4335 cached, leading to many fewer expensive calls to
4336 COMPUTE-APPLICABLE-METHODS.
4337 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
4338 CLASS argument, search for and call an appropriate optimized ctor function
4340 * bug fix: WRITE always returns the correct value.
4342 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
4343 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
4344 * bug fix: Name conflicts between symbols passed as arguments to a single
4345 call to IMPORT no longer add multiple symbols with the same name to the
4346 package (detectable via DO-SYMBOLS).
4347 * bug fix: support building without the dlshim on darwin x86 and x86-64
4349 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
4351 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
4352 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
4354 * bug fix: linkage-table entries on PPC now no longer overflow their
4355 space allocation (potentially causing crashes if they are written out
4357 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
4358 platforms, preventing the GC from seeing stale pointers on the control
4359 stack in subsequent GCs (which would, and does, break invariants).
4360 * bug fix: 32-bit unicode external formats now work on big-endian systems.
4361 * bug fix: Literal characters with code points greater than about 32767
4362 now work on PPC UNICODE builds.
4363 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
4364 high order bits are explicitly cleared out. In some contrived situations,
4365 this could lead to wrong results in mixed real/complex float arithmetic.
4366 * bug fix: Fix function/macro redefinition warnings when building with
4367 clisp. (lp#576787, thanks to Josh Elsasser)
4368 * new platform: experimental support for ppc/openbsd (thanks to Josh
4370 * bug fix: Floating-point traps now work on ppc/linux.
4372 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
4373 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
4374 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
4375 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
4376 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
4377 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
4378 SB-THREAD:GRAB-MUTEX.
4379 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
4380 contain additional data structures and tools for concurrent programming;
4381 at the moment it contains a lock-free queue, and a lock-free mailbox
4383 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
4384 GET-MUTEX but takes &key rather than &optional parameters. Also added
4385 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
4387 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
4388 SB-THREAD:WAIT-ON-SEMAPHORE.
4389 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
4391 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
4392 conditions to defer the deadline for forever.
4393 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
4395 * enhancement: errors from NO-APPLICABLE-METHOD and
4396 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
4397 generic function call.
4398 * enhancement: SB-BSD-SOCKET improvements
4399 ** sockets and socket streams now have a more informative printed
4400 representation based on the corresponding SOCKET-NAME and
4402 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
4404 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
4405 CL:CLOSE when appropriate, and no longer disassociates the stream
4406 from the socket if close failed. (lp#543951)
4407 * improvements to the instrumenting profiler
4408 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
4409 ** optimization: counters no longer use locks for the overflow mode.
4410 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
4411 incurred an off-by-one miscount.
4412 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
4413 * enhancement: improved DEFMETHOD pretty-printing.
4414 * enhancement: perform range reduction when arguments are too large for
4415 x87's transcendentals (instead of returning 0). (lp#327192)
4416 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
4417 some of CL-PPCRE's macros. (lp#570079)
4418 * enhancement: our machine code is slightly less hostile to valgrind on
4420 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
4421 to Robert Swindells and Aleksej Saushev)
4422 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
4423 * bug fix: a rare case of startup-time page table corruption.
4424 * bug fix: a semaphore with multiple waiters and some of them unwinding due
4425 to timeouts could be left in an inconsistent state.
4426 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
4427 * bug fix: misoptimization of multiplication by one in
4428 (SB-C::FLOAT-ACCURACY 0) policies.
4429 * bug fix: miscounts in SB-PROFILE.
4430 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
4431 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
4432 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
4433 up itself" (March 2010) for further details.
4434 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
4435 against length of the list if the element is found before the specified
4436 END is reached. (thanks to Alec Berryman, lp#554385)
4437 * bug fix: errors signalled during package graph modification no longer
4438 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
4439 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
4440 :SB-DOC feature. (lp#552564)
4441 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
4442 * bug fix: more robust runtime executable path detection. (lp#375549)
4443 * bug fix: GCD always returns positive values. (lp#413680)
4444 * bug fix: Converting division to multiplication by reciprocal handles
4446 * bug fix: We were too eager in eliding range reduction tests on x87.
4447 The maximal magnitude is 2^63, not 2^64.
4448 * bug fix: Transforms for TRUNCATE don't die when the result is completely
4450 * bug fix: Maybe restore buildability on Alpha.
4451 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
4453 * bug fix: RANDOM-STATE can be printed readably again.
4454 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
4455 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
4456 types) could result in type mismatches during compilation.
4458 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
4459 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
4460 stack frame thrown from.
4461 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
4462 compiler optimization qualities inside dynamic extent of its body.
4463 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
4464 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
4466 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
4467 constraint propgation, allowing better compilation eg. when used to
4468 access structures with WITH-SLOTS. (lp#520366)
4469 * optimization: the compiler is now more aware of the type of the underlying
4470 storage vector for multidimensional simple arrays resulting in better code
4471 for accessing such arrays.
4472 * optimization: passing NIL as the environment argument to TYPEP no longer
4473 inhibits optimizing it. (lp#309788)
4474 * optimization: more efficient register usage when handling single-float
4475 arguments on x86-64. (thanks to Lutz Euler)
4476 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
4477 pre-allocated temporary vectors. (lp#496249)
4478 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
4479 in :INITIAL-CONTENTS. (lp#523612)
4480 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
4481 functions. (lp#524707)
4482 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
4483 WITH-SLOTS usages during compilation.
4484 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
4485 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
4486 all x86oid platforms with :UD2-BREAKPOINTS target feature.
4487 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
4488 instruction (tested on x86oid linux with ud2-breakpoints).
4489 * bug fix: slam.sh now works on win32.
4490 * bug fix: better differences of numeric types. (lp#309124)
4491 * bug fix: arrays declared intersection and union types can have their
4492 upgraded element type derived. (lp#316078)
4493 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
4494 threads started during profiling. (lp#472499)
4495 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
4497 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
4498 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
4499 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
4500 values instead of signaling an error. (lp#309093)
4501 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
4503 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
4504 declarations (lp#497321)
4505 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
4506 and failed to detect circular lists (lp#452008)
4507 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
4509 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
4510 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
4511 due to it, so that handlers can run.
4512 * bug fix: reparsing undefined types if they have become defined since
4513 parsing. (lp#309128)
4514 * bug fix: missing &REST type in a proclamation for a function with both
4515 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
4516 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
4517 expanded calls (lp#542174)
4518 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
4519 than just at toplevel form.
4521 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
4522 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
4523 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
4524 but work on type specifiers.
4525 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
4526 to name a type specifier.
4527 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
4528 specifier is valid where "valid" basically means "would be accepted as
4529 second argument of TYPEP".
4530 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
4531 returns the function's declared, or derived FTYPE.
4532 * new feature: SB-POSIX now supports accessing the d_ino member of
4533 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
4534 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
4535 provide for seeding a RANDOM-STATE object with user-provided data or
4536 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
4537 attempt to initialize the returned state from the operating system's
4538 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
4539 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
4540 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
4541 * bug fix: Fix grammar and style issues for the docstrings of
4542 printer-related variables and functions. (Thanks to mon_key; launchpad
4544 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
4546 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
4547 in a row even though a handler defered the deadline long into the
4549 * bug fix: A deadline handler was run without interrupts enabled for a
4550 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
4551 in infinitely spinning, non-killable threads.
4552 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
4553 before reaching the erring stack frame.
4554 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
4555 real power. (launchpad bug lp#525949)
4556 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
4557 GENCGC platforms. (launchpad bug lp#529014)
4558 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
4559 (launchpad bug lp#525916)
4560 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
4561 (Thanks to Robert Goldman)
4563 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
4564 * optimization: ROUND with a single single-float or double-float argument
4565 is properly inlined when possible.
4566 * optimization: Slightly better code is generated for integer<->float
4567 conversions and for single-float<->double-float conversions on x86-64.
4568 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
4569 code for 32-bit and 64-bit rotations on x86-64.
4570 * bug fix: The install script changes the ownership of directories as well
4571 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
4572 launchpad bug lp#508485)
4573 * bug fix: TRUNCATE with a single single-float or double-float argument is
4574 properly inlined when possible. (launchpad bug lp#489388)
4575 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
4576 no longer causes a compiler error on x86 and ppc.
4577 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
4578 always relative to *READTABLE* rather than the passed argument.
4580 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
4581 * minor incompatible change: threading support is now enabled by default
4583 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
4585 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
4586 are now caught and reported just like errors during macroexpansion.
4587 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
4588 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
4589 * enhancement: ASDF systems can now depends on SB-QUEUE.
4590 * fixes and improvements related to Unicode and external formats:
4591 ** bug fix: error handling and restart usage in the ucs-2 external format
4593 ** there is now an implementation of the ucs-4 external format.
4594 ** the utf-16 and utf-32 external formats are supported.
4595 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
4596 in the environment. setenv() and unsetenv() are also provided. (reported by
4597 Fare Rideau; launchpad bug lp#460455)
4598 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
4599 loading. This ensures sensible errors for .FASL files from other
4600 implementations on case-insensitive filesystems. (reported by Willem
4601 Broekema; launchpad bug lp#489417)
4602 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
4603 Willem Broekema; launchpad bug lp#489698).
4604 * bug fix: some minor code rearrangements to reenable warning-free building
4605 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
4606 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
4608 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
4611 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
4612 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
4613 * improvement: support O_LARGEFILE access to files larger than 2GB on
4614 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
4615 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
4616 definitions for methods specializing on the passed class itself.
4617 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
4618 definitions for methods specializing on the passed class itself, or on
4620 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
4621 about itself during the build (e.g. for M-? in Slime), if this flag is
4622 enabled in customize-target-features.lisp. This will increase the core
4623 size by about 5-6mb, though, so it's mostly interesting to SBCL
4625 * new feature: various GENCGC tuning parameters have been experimentally
4626 documented and exported from SB-EXT. See documentation for details.
4627 * fixes and improvements related to Unicode and external formats:
4628 ** the Unicode character database has been upgraded to the
4629 Unicode 5.2 standard, giving names and properties to a number of new
4630 characters, and providing a few extra characters with case
4632 ** improvement: restarts for providing replacement input/output on coding
4633 errors for fd-stream external formats.
4634 ** improvement: where :<encoding> is a keyword corresponding to an
4635 external format the system supports, it is now possible to specify
4636 (:<encoding> :replacement <character>) as an external format which will
4637 automatically substitute <character> on encoding or decoding errors for
4638 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
4640 ** improvement: the file streams underlying the standard streams (such as
4641 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
4642 which uses the replacement mechanism to handle encoding errors,
4643 preventing various infinite error chains and unrecoverable I/O
4645 ** minor incompatible change: the utf-8 external format now correctly
4646 refuses to encode Lisp characters in the surrogate range (char-codes
4647 between #xd800 and #xdfff).
4648 ** fix a typo preventing conversion of strings into octet vectors
4649 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
4651 ** fix a bug in the octet multibyte handling of decoding errors and the
4652 USE-VALUE restart. (launchpad bug lp#314939)
4653 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
4654 restart on fd-stream decoding errors.
4655 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
4656 error is near the end of file.
4657 ** fix a double-error case in unibyte octet conversions, when the first
4658 use of USE-VALUE is ignored.
4659 ** fix bugs in handling of undefined code points in unibyte encodings.
4660 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
4661 streams after an UNREAD-CHAR.
4662 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
4663 object is allocated in a boxed region of dynamic space.
4664 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
4665 fork with multiple Lisp threads running is made, instead of going
4666 ahead with unpredictable consequences. (reported by Leslie Polzer)
4667 * bug fix: uses of slot accessors on specialized method parameters within
4668 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
4669 error while finalizing the class. This fix may cause classes with slot
4670 accessors to be finalized later than previously. (reported by Lars Rune
4671 Nøstdal; launchpad bug lp#473699)
4672 * bug fix: restore buildability on the MIPS platform. (regression from
4673 1.0.30.38, reported by Samium Gromoff)
4674 * bug fix: inspecting closures is less likely to fail with a type error.
4675 * bug fix: no timer starvation when setting the system clock back.
4676 (launchpad bug lp#460283)
4677 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
4678 standard pprint dispatch table as specified by CLHS.
4679 * bug fix: give CLISP a hint about a type declaration to enable it to build
4680 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
4682 * bug fix: correctly dump literal objects in defaulting forms of arglists.
4683 (reported by Attila Lendvai; launchpad bug lp#310132)
4684 * bug fix: distinguish in type specifiers between arrays that might be
4685 complex and arrays that are definitely complex. (launchpad bug lp#309129)
4686 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
4687 type. (reported by Levente Mészáros; launchpad bug lp#485972)
4688 * bug fix: setting the value of a symbol-macro within a method in the
4689 presence of type declarations works properly again. (reported by Iban
4690 Hatchondo; launchpad bug lp#485019)
4692 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
4693 * optimization: faster FIND and POSITION on strings of unknown element type
4694 in high SPEED policies. (thanks to Karol Swietlicki)
4695 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
4697 * improvement: better error signalling for bogus parameter specializer names
4698 in DEFMETHOD forms (reported by Pluijzer)
4699 * bug fix: DELETE-FILE once again works on logical pathnames (regression
4701 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
4703 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
4704 removes previous default initargs (reported by Lars Rune Nøstdal and
4706 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
4707 lambda-lists. (reported by Peter Seibel)
4708 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
4709 correctly when starting from an executable core without saved runtime
4710 options (reported by Faré Rideau, thanks to Zach Beane)
4711 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
4712 an optimization note instead. (reported by Martin Cracauer)
4713 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
4714 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
4715 new process group if it doesn't need to share stdin with the sbcl
4716 process. (thanks to Leslie Polzer)
4717 * bug fix: SATISFIES could be misoptimized to refer to a local function.
4718 (reported by Stanislaw Halik)
4720 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
4721 * improvement: stack allocation is should now be possible in all nested
4722 inlining cases: failure to stack allocate when equivalent code is manually
4723 open coded is now considered a bug.
4724 * improvements related to Unicode:
4725 ** the Unicode character database has been upgraded to the
4726 Unicode 5.1 standard, giving names and properties to a number of new
4727 characters, and providing a few extra characters with case
4729 ** the system now recognizes and produces names for Unicode Hangul
4730 syllable characters.
4731 ** the EBCDIC-US external-format is now supported for octet operations
4732 (as well as for stream operations).
4733 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
4734 be used to output toplevel compile-time effects into a separate .CFASL
4736 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
4737 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
4739 * optimization: TRUNCATE on known single- and double-floats is upto 25%
4741 * optimization: division of floating point numbers by constants uses
4742 multiplication by reciprocal when an exact reciprocal exists.
4743 * optimization: multiplication of single- and double-floats floats by
4744 constant two has been optimized.
4745 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
4746 sufficient type information is available. (thanks to Leslie Polzer)
4747 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
4748 known structure objects are as efficient as defstruct generated accessors.
4749 * optimization: unused vector creation can now be optimized away.
4750 * improvement: ASDF systems can now depends on SB-INTROSPECT.
4751 * improvement: a STYLE-WARNING is signalled when a generic function
4752 clobbers an earlier FTYPE proclamation.
4753 * improvement: the compiler is able to track the effective type of
4754 generic function across method addition and removal even in the
4755 absence of an explicit DEFGENERIC.
4756 * improvement: DESCRIBE now reports on symbols naming undefined
4757 but assumed or declared function as well.
4758 * improvement: recompilation of systems using SB-GROVEL now works
4759 (thanks to Leslie Polzer)
4760 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
4761 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
4763 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
4764 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
4765 well as user defined declaration names.
4766 ** VARIABLE-INFORMATION is now aware of alien variables.
4767 * improvement: improved address space layout on OpenBSD (thanks to Josh
4769 * improvement: pretty-printing of various Lisp forms has been improved
4770 (thanks to Tobias Rittweiler)
4771 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
4772 unused were deleted in safe code. (reported by John Fremlin)
4773 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
4775 * bug fix: some out-of-line array predicates were missing (reported by
4777 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
4779 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
4780 (thanks to Larry D'Anna)
4781 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
4782 as well. (reported by Josh Elsasser)
4783 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
4784 leading to possible attempts to delete the same file twice. See docstring
4785 on DELETE-FILE for details. (reported by John Fremlin)
4786 * bug fix: DELETE-FILE once again deletes the file named by the pathname
4787 designator argument, rather than its truename. (reported by Luis
4789 * bug fix: the low-level debugger had 32-bit assumptions and was missing
4790 information about some array types. (thanks to Luis Oliveira)
4791 * bug fix: moderately complex combinations of inline expansions could
4792 be miscompiled if the result was declared to be dynamic extent.
4793 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
4794 form (+ <variable> <integer>) were miscompiled under certain
4796 * bug fix: in some cases no compiler note about failure to stack allocate
4797 was emitted, even if the objects were in fact heap allocated.
4798 * bug fix: minor violation of "otherwise inaccessible" rule for stack
4799 allocation could cause objects users might reasonably expect to
4800 be heap allocated to be stack allocated.
4801 * bug fix: DESCRIBE signalled an error for generic functions under
4802 certain circumstances. (thanks to Leslie Polzer)
4803 * bug fix: Fixed spelling of an error message.
4805 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
4806 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
4807 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
4808 of SB-THREAD:THREAD-ERROR-THREAD.
4809 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
4810 * new feature: docstrings for local and anonymous functions are no longer
4811 discarded. (thanks to Leslie Polzer)
4812 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
4813 values in other threads.
4814 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
4815 about object allocation.
4816 * optimization: division of a real float by a complex float is implemented
4817 with a specialised code sequence.
4818 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
4819 keywords is an order of magnitude faster.
4820 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
4821 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
4822 methods, and similarly for non-standard metaclass classes as long as there
4823 are no methods additional on MAKE-INSTANCE.
4824 * optimization: more efficient type-checks for FIXNUMs when the value
4825 is known to be a signed word on x86 and x86-64.
4826 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
4827 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
4829 * optimization: compiler is smarter about delegating argument type checks to
4831 * optimization: several character functions are now compiled somewhat more
4832 efficiently. (reported by Lynn Quam)
4833 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
4834 * improvement: less unsafe constant folding in floating point arithmetic,
4835 especially for mixed complex/real -float operations.
4836 * optimization: constant double and single floats are stored in native
4837 unboxed format on x86[-64].
4838 * optimization: smarter code for arithmetic operations with constant floats,
4839 complex floats, or integers on x86[-64].
4840 * optimization: smarter code for conjugate/multiplication of float complexes
4841 and abs/negate of floats on x86-64.
4842 * optimization: more efficient complex float and real float operations on
4844 * improvement: complex float division is slightly more stable.
4845 * improvement: DESCRIBE output has been reworked to be easier to read and
4846 contains more pertinent information.
4847 * improvement: failure to provide requested stack allocation compiler notes
4848 provided in all cases (requested stack allocation not happening without a
4849 note being issued is now considered a bug.)
4850 * bug fix: SB-POSIX exports the documented types and functions
4851 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
4852 types. (reported by "abhi")
4853 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
4854 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
4855 (thanks to Paul Khuong)
4856 * bug fix: looping around HANDLER-CASE could silently consume stack space
4857 on each iteration. (reported by "foobar")
4858 * bug fix: better error signalling when calls to functions seeking elements
4859 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
4860 (reported by Tobias Rittweiler)
4861 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
4862 directory components now works as it used to. (various prolems reported by
4863 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
4864 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
4865 (reported by Elliot Slaughter, thanks to Stas Boukarev)
4866 * bug fix: bogus undefined variable warnings from fopcompiled references to
4867 global variables. (thanks to Lars Rune Nøstdal)
4868 * bug fix: foreign function names should now appear in backtraces on
4869 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
4870 * bug fix: SETF compiler macro documentation strings are not discarded
4872 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
4873 (thanks to Alex Plotnick)
4874 * bug fix: SLEEP accepts large integer arguments, truncating them to
4875 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
4876 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
4877 * bug fix: compiler notes for expensive slot type checks could be emitted
4878 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
4880 changes in sbcl-1.0.29 relative to 1.0.28:
4881 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
4882 https://bugs.launchpad.net/sbcl
4883 Bugs can be reported directly there, or by sending email to
4884 sbcl-bugs@lists.sourceforge.net
4885 (no subscription required.)
4886 * minor incompatible change: under weak type checking policy integer
4887 types are weakened less aggressively.
4888 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
4889 allowed to return, which causes SBCL to quit with exit status 0. Previously
4890 if the function returned with a small integer return value, that value
4891 was accidentally reused as the exit status.
4892 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
4893 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
4894 :HASH-FUNCTION argument. Refer to user manual for details.
4895 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
4897 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
4898 microseconds since the Unix epoch on all platforms.
4899 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
4900 allows the compiler to safely elide boundedness checks for special
4902 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
4903 the symbol, prohibits both lexical and dynamic binding. This is mainly an
4904 efficiency measure for threaded platforms, but also valueable in
4906 * new feature: UNC pathnames are now understood by the system on Windows.
4907 * optimization: the compiler uses a specialized version of FILL when the
4908 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
4910 * optimization: accesses to potentially non-simple arrays where element type
4911 is known are 50% faster.
4912 * optimization: compiler now generates faster array typechecking code.
4913 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
4915 * optimization: multidimensional array accesses in the absence of type
4916 information regarding array rank are approximately 10% faster due to
4917 open coding of ARRAY-RANK.
4918 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
4919 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
4921 * optimization: result of call to VECTOR can now be stack allocated.
4922 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
4923 as long as the resulting array is one-dimensional and has a known
4924 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
4925 length of the list matches the known length of the vector does not
4926 allocate the list as an intermediate step. Ditto for VECTOR and simple
4928 * optimization: MAKE-ARRAY can now stack allocate in the presence of
4929 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
4930 known element type, and is known to be simple and one dimensional.
4931 * improvement: SBCL now emits a compiler note where stack allocation was
4932 requested but could not be provided (not in all cases, unfortunately)
4933 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
4934 * improvement: pretty-printing loop has been implemented properly. (thanks
4935 to Tobias Rittweiler)
4936 * documentation: CLOS slot typechecing policy has been documented.
4937 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
4938 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
4939 pointer, leading to memory faults. (thanks to Bart Botta)
4940 * bug fix: better floating point exception handling on x86/OpenBSD.
4941 (thanks to Josh Elsasser)
4942 * bug fix: exit status from QUIT when called under --script was lost
4943 (reported by Hubert Kauker)
4944 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
4945 same implementation of FILL to initialize the array, even if a more
4946 efficient one was available (reported by Stas Boukarev, thanks to
4948 * bug fix: potential miscompilation of array stack allocation on x86 and
4949 x86-64. (reported by Time Tossavainen)
4950 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
4951 result in their subforms being treated as top level forms. (reported by
4953 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
4954 than a machine register could leave garbage in the high bits of the
4955 result register (bug 316325).
4956 * bug fix: disable address space randomization Linux/x86-64 as well,
4957 not just x86-64. (reported by Ken Olum)
4958 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
4959 generate incorrect code.
4960 * bug fix: #201; type inference for CONS and ARRAY types could derive
4961 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
4962 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
4963 could not be assigned to or bound with PROGV. (reported by Lorenz
4965 * bug fix: the value of CL:- in the inspector was the previous expression
4966 evaluated rather than the expression being evaluated.
4967 * bug fix: constants can no longer be locally declared special.
4968 * bug fix: signals delivered to threads started from foreign land (read:
4969 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
4970 thread by blocking all signals and resignalling.
4971 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
4972 from :INITFORM, if any.
4974 changes in sbcl-1.0.28 relative to 1.0.27:
4975 * a number of bugs in cross-compilation have been fixed, with the ultimate
4976 result that building under (at least) clisp should be much more reliable.
4977 * minor incompatible changes: echo-streams now propagate unread-char to the
4978 underlying input stream, and no longer permit unreading more than one
4980 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
4981 frames, allowing for instance more reliable backtraces.
4982 * improvement: the debugger REPL can now reference lexical variables
4983 by name directly for code compiled with (DEBUG 3).
4984 * improvement: errors from malformed declarations now have better source
4985 paths associated with them. (thanks to Tobias Rittweiler)
4986 * optimization: faster local calls on x86/x86-64
4987 * bug fix: some error messages for out-of-bound array indexes confused the
4988 index and the bound. (thanks to Stas Boukarev)
4989 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
4991 * bug fix: running regressions tests in shells without OSTYPE set now works.
4992 (reported by Harald Hanche-Olsen)
4993 * bug fix: more robust static space exhaustion signalling from
4994 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
4995 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
4996 docstring away instead of storing it under names such as (LAMBDA (X)).
4997 (reported by Leslie Polzer)
4998 * bug fix: timers could go off in the wrong order, be delayed indefinitely
4999 (thanks to Ole Arndt for the patch)
5000 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
5001 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
5002 potentially-invalid effective methods in its cache.
5003 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
5004 instances as well (thanks to Paul Khuong)
5005 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
5006 SB-POSIX:WAITPID and their C equivalents.
5007 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
5009 changes in sbcl-1.0.27 relative to 1.0.26:
5010 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
5011 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
5012 * improvement: the system either recovers from stack exhaustion or dies
5013 properly as opposed to leaving the user uncertain of whether the handler
5014 trampled on some random memory next to the stack or having to rely on
5015 --lose-on-corruption (which is still a good idea to use in production
5016 because stack exhaustion can happen in signal handlers which will likely
5018 * bug fix: fix gc related interrupt handling bug on ppc (regression from
5019 1.0.25.37, reported by Harald Hanche-Olsen)
5020 * bug fix: work around signal delivery bug in darwin (regression from
5021 1.0.25.44, reported by Sidney Markowitz)
5022 * bug fix: fix ERROR leaking memory (reported by David Thompson)
5024 changes in sbcl-1.0.26 relative to 1.0.25:
5025 * incompatible change: an interruption (be it a function passed to
5026 INTERRUPT-THREAD or a timer function) runs in an environment where
5027 interrupts can be enabled. The interruption can use
5028 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
5029 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
5030 potentially running out of stack. Keep in mind that in the absence
5031 of WITHOUT-INTERRUPTS some potentially blocking operation such as
5032 acquiring a lock can enable interrupts.
5033 * incompatible change: GC-OFF and GC-ON are removed, as they were
5034 always unsafe. Use WITHOUT-GCING instead.
5035 * new feature: runtime option --disable-ldb
5036 * new feature: runtime option --lose-on-corruption to die at the
5037 slightest hint of possibly non-recoverable errors: running out of
5038 memory, stack, alien stack, binding stack, encountering a memory
5039 fault, etc. In the absence of --lose-on-corruption a warning is
5041 * enhancement: detect binding stack exhaustion
5042 * enhancement: detect alien stack exhaustion on x86/x86-64
5043 * improvement: generally more stable and reliable interrupt handling
5044 * improvement: there is a per thread interruption queue,
5045 interruptions are executed in order of arrival
5046 * improvement: a repeating timer reschedules itself when the it has
5047 finished, but expiration times are spaced equally. If an
5048 expiration time is in the past it will trigger after a short grace
5049 period that may give a chance to other things to run.
5050 * optimization: slightly faster gc on multithreaded builds
5051 * optimization: faster WITHOUT-GCING
5052 * bug fix: when JOIN-THREAD signals an error, do it when not holding
5053 important locks so that the debugger/handler doesn't produce
5054 recursive errors or deadlock.
5055 * bug fix: real-time signals are not used anymore, so no more
5056 hanging when the system wide real-time signal queue gets full.
5057 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
5059 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
5060 * bug fix: fix random memory faults related to interrupts on alpha
5061 * bug fix: fix random memory faults related to interrupts on sparc
5062 * bug fix: fix deadlocks related to starting threads
5063 * bug fix: fix deadlines on locks on futex platforms
5064 * bug fix: restore errno in signal handlers
5065 * bug fix: fix deadlocks related to hash tables
5066 * bug fix: fix deadlocks in pcl
5068 changes in sbcl-1.0.25 relative to 1.0.24:
5069 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
5070 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
5071 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
5072 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
5073 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
5074 better name and does not return values so stale on multiprocessor systems.
5075 Also, HOLDING-MUTEX-P was added for about the only sane usage of
5077 * improvement: unithread builds keep track of MUTEX-VALUE.
5078 * improvement: reading from a TWO-WAY-STREAM does not touch the output
5079 stream anymore making it thread safe to have a concurrent reader and
5080 a writer, for instance, in a pipe.
5081 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
5082 arguments, making compiler-macros for SETF-functions able to inspect
5083 their constant arguments.
5084 * improvement: COMPILE-FILE reports times with millisecond accuracy
5085 (thanks to Luis Oliveira)
5086 * optimization: CHAR-CODE type derivation has been improved, making
5087 TYPEP elimination on subtypes of CHARACTER work better. (reported
5088 by Tobias Rittweiler, patch by Paul Khuong)
5089 * bug fix: setting alien structure fields of type struct by value now
5090 computes the right offset for the memory copy.
5091 * bug fix: compilation problem involving inlined calls to aliens with
5092 result type VOID. (reported by Ken Olum)
5093 * bug fix: #235a; sequential inline expasion in different policies no
5094 longer reuses the functional from the previous expansion site.
5095 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
5096 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
5097 * bug fix: named ENUMs in multiply-referenced alien record types no longer
5098 cause an implied type redefinition. Regression from 1.0.21.29.
5099 * bug fix: sign-extension of small signed return values now works with C
5100 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
5101 * improvements to the Windows port:
5102 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
5103 Westfold, thanks to Rudi Schlatte)
5105 changes in sbcl-1.0.24 relative to 1.0.23:
5106 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
5107 vector of a multidimensional SIMPLE-ARRAY.
5108 * new feature: the system now signals a continuable error if standard
5109 readtable modification is attempted. (thanks to Tobias Rittweiler)
5110 * new feature: DIRECTORY has been extended with a non-standard keyword
5111 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
5112 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
5113 has been robustified and documented better. (thanks to Robert Goldman)
5114 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
5115 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
5116 * tradeoff: constant FORMAT control strings are now compiled unless
5117 SPACE > SPEED (previously only when SPEED > SPACE.)
5118 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
5120 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
5122 * bug fix: lexical type declarations are now correctly reported by
5123 SB-CLTL2. (reported by Larry D'Anna)
5124 * bug fix: STRING-TO-OCTETS did not handle :START properly when
5125 using UTF-8 as external format. (thanks to Luis Oliveira)
5126 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
5127 are signalled correctly. (thanks to Stas Boukarev)
5128 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
5129 designator. (thanks to Tobias Rittweiler)
5130 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
5131 designator, and returns T instead of the function. (thanks to
5133 * bug fix: direct superclasses of STANDARD-CLASS and
5134 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
5135 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
5136 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
5137 when no class with the named slot yet exists no longer causes a
5138 compile-time style-warning.
5139 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
5140 in safe code. (reported by Didier Verna)
5141 * bug fix: #430; nested structure constructors can stack allocate.
5142 * bug fix: on some 64-bit platforms dynamic space size was truncated
5143 to #xffff0000 bytes. (reported by Benjamin Lambert)
5144 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
5145 REPL unusable. (reported by Daniel Herring)
5146 * bug fix: return values of READ-SEQUENCE did not take :START into
5147 account on file streams, regressions since 1.0.12.22. (reported by
5148 Thomas Russ, patch by Paul Khuong)
5149 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
5150 method specializer used to confuse permuation vector optimization.
5151 * bug fix: system inserted bogus implicit type declarations for local
5152 special variables in DEFMETHOD bodies.
5153 * bug fix: #354; duplicated frames in backtraces due to
5154 non-tail-call-optimized XEPs to functions with return type NIL
5156 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
5157 initializes structure object slots according to DEFSTRUCT initforms,
5158 and DEFSTRUCT forms :INCLUDEind structure classes defined using
5159 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
5160 (reported by Bruno Haible and Stephen Wilson)
5161 * bug fix: #395; fill-pointer output streams used now support
5162 element-type BASE-CHAR as well.
5163 * bug fix: compiler error when attempting to derive return value of
5164 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
5166 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
5168 * bug fix: Mac OS X binaries should now be portable between Leopard
5171 changes in sbcl-1.0.23 relative to 1.0.22:
5172 * enhancement: when disassembling method functions, disassembly
5173 for the associated fast function is also produced.
5174 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
5176 * optimization: printing with *PRINT-PRETTY* true is now more
5177 efficient as long as the object being printed doesn't require
5178 special handling by the pretty printer.
5179 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
5180 now interact correctly with type declarations.
5181 * partial bug fix: PCL detects infinite recursion during wrapper
5182 validation. (thanks to Attila Lendvai)
5183 * bug fix: #426; nested function calls are inlined properly.
5184 Previously if FOO was an inline function, in calls of the form
5185 (FOO (FOO ...)) the outer call was not inlined.
5186 * bug fix: long long arguments passed in registers to alien
5187 functions on PowerPC Linux and NetBSD are now handled correctly
5188 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
5190 changes in sbcl-1.0.22 relative to 1.0.21:
5191 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
5192 for the shared object in the current directory, but passes the native
5193 namestring of the designated pathname to the operation system's shared
5194 object loading function as-it.
5195 * minor incompatible change: --disable-debugger toplevel option now takes
5196 effect before processing of initialization files and --eval or --load
5198 * new feature: new commandline argument: --script, which supports
5199 shebang lines. See documentation for details. (based on work by
5201 * new feature: SAVE-LISP-AND-DIE can save current values of
5202 --dynamic-space-size and --control-stack-size in the executable core,
5203 causing it to skip normal runtime option processing. See documentation
5204 for details. (thanks to Zach Beane)
5205 * enhancement: inoccous calls to EVAL or generic functions dispatching
5206 on subclasses of eg. STREAM no longer cause compiler notes to appear.
5207 * enhancement: the system no longer resignals errors from --load and
5208 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
5209 associated with the original error to be lost. (thanks to Ariel
5211 * enhancement: :DONT-SAVE keyword argument has been added to
5212 LOAD-SHARED-OBJECT for controlling interaction with
5213 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
5214 the effects of an earlier LOAD-SHARED-OBJECT call.
5215 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
5216 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
5217 provided. (reported by Cedric St-Jean)
5218 * bug fix: circularity handling in the reader did not treat raw
5219 structure slots correctly. (reported by Cedric St-Jean)
5220 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
5221 file descriptors when there were none.
5222 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
5223 was broken. (reporteed by Willem Broekema)
5224 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
5225 pathnames without a directory.
5226 * bug fix: COMPILE-FILE did not warn about undefined variable
5227 references at toplevel, and LOAD of the resulting fasl did
5228 not signal an error.
5229 * bug fix: functions with non-required arguments used to end up with
5230 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
5231 * bug fix: redefining a function with non-required arguments didn't
5232 update the system's knowledge about its call signature properly.
5233 * bug fix: fixed #431; incompatible alien record type redefinitions
5234 are detected and handled. (reported by Neil Haven)
5235 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
5236 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
5238 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
5239 after alien stack frames.
5240 * bug fix: strings passed to mk{s,d}temp lacked null termination
5242 changes in sbcl-1.0.21 relative to 1.0.20:
5243 * new feature: the compiler is able to track the effective type of a
5244 generic function across method addition and removal.
5245 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
5246 appropriately typed structure slots without locking.
5247 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
5248 information like those gathered by TIME using a programming-friendly
5250 * new feature: TIME reports time taken even if the form performs a
5251 non-local transfer of control.
5252 * enhancement: reduced conservativism on GENCGC platforms: on
5253 average 45% less pages pinned (measured from SBCL self build).
5254 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
5255 mutate constant symbols or violate declaimed type of the symbol.
5256 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
5257 sleeping on the semaphore in heavily contested semaphores.
5258 * bug fix: semaphores and condition variables were not interrupt
5260 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
5261 owned by other threads anymore.
5262 * bug fix: FIND on lists called KEY outside the specified
5263 subsequence. (reported by budden)
5264 * bug fix: LOG doesn't use single-float intermediate results when
5265 given mixed integer and double-float arguments, leading to better
5266 precision. (reported by Bob Felts)
5267 * bug fix: LOG with base zero returned values of inconsistent type.
5269 changes in sbcl-1.0.20 relative to 1.0.19:
5270 * minor incompatible change: OPTIMIZE qualities
5271 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
5272 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
5273 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
5274 * documentation: some slot access efficiency guidelines have been
5275 added to the user manual.
5276 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
5277 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
5278 as ASSOC and MEMEBER.
5279 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
5280 to more efficient EQ-comparison versions more often.
5281 * optimization: enhanced derivation of DOLIST iteration variable type
5283 * optimization: constant folding of simple (LIST ...) forms as DOLIST
5285 * optimization: runtime lookup of function definitions can be
5286 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
5287 * optimization: compiler is able to derive the return type of
5288 (AREF (THE STRING X) Y) as being CHARACTER.
5289 * optimization: CLRHASH on empty hash-tables no longer does pointless
5290 work. (thanks to Alec Berryman)
5291 * optimization: REPLACE deftransforms don't punt when :START1 or
5293 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
5294 no longer emits a code deletion note. (reported by Andrew
5296 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
5297 functions with an odd number of &OPTIONAL arguments, a &REST
5298 argument, and one or more &KEY arguments at the call site.
5299 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
5300 arguments appeared at call sites as well.
5301 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
5302 READ-LINE &co can no longer read from them afterwards. (reported
5304 * bug fix: fixed #427: unused local aliens no longer cause compiler
5305 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
5307 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
5308 alien-stack leakage. (reported by Andy Hefner)
5309 * bug fix: PROGV signals an error when an attempt to violate declared
5310 type of a variable or bind a constant is made.
5311 * bug fix: SET signals an error when an attempt to violate declared
5312 type of a variable is made.
5313 * bug fix: restart computation during the execution of a restart
5314 test function no longer causes infinite recursion. (reported by
5316 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
5317 signals an error. (thanks to Pierre Mai)
5318 * bug fix: EXPORT left symbol unexported in conflict situations.
5319 (thanks to Michael Weber)
5320 * bug fix: correctly handle name conflicts involving CL:NIL.
5321 (thanks to Michael Weber)
5322 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
5323 conflicts arising from USEing package with conflicting symbols
5324 correctly. (thanks to Michael Weber)
5326 changes in sbcl-1.0.19 relative to 1.0.18:
5327 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
5328 warnings that go otherwise unhandled will be muffled if they are
5329 of the type that's the value of this variable.
5330 * optimization: stack allocation is slightly more efficient on x86
5332 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
5333 where a raw slot always is initialized using the initform whose
5334 type is not know sufficiently well a compile-time are now compiled
5335 correctly. (reported by John Morrison)
5336 * bug fix: compiler no longer makes erronous assumptions in the
5337 presence of non-foldable SATISFIES types.
5338 * bug fix: stack analysis missed cleanups of dynamic-extent
5339 arguments in non-let-converted calls to local functions.
5340 * improvements to the Windows port:
5341 ** adjusted address spaces for building on both Win32 and
5342 Win64. (thanks for John Connors)
5343 * fixed some bugs revealed by Paul Dietz' test suite:
5344 ** interval arithmetic during type derivation used inexact integer
5345 to single-float coercions.
5346 ** arithmetic operations involving large integers and single
5347 floats give the same results in compiled and interpreted code.
5348 ** deriving the result type of COERCE no longer signals an error
5349 if the derived type of the second argument is a MEMBER type
5350 containing invalid type specifiers.
5351 ** ADJOIN with constant NIL as second argument works correctly.
5352 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
5354 changes in sbcl-1.0.18 relative to 1.0.17:
5355 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
5356 profiles only the current thread.
5357 * minor incompatible change: changes to SYMBOL-VALUE of constants
5358 defined with DEFCONSTANT now signal an error.
5359 * enhancement: SB-SPROF now has support for wallclock profiling,
5360 and is also able to profile specific threads. REPORT output
5361 has also additional sorting options.
5362 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
5364 * optimization: structure allocation has been improved
5365 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
5366 ** out of line constructors are ~10% faster.
5367 ** inline constructors are ~15% faster.
5368 ** inline constructors are capable of dynamic extent allocation
5369 (generally on x86 and x86-64, in some cases on other platforms
5371 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
5373 * optimization: file compiler is now able to coalesce non-circular
5374 lists, non-base strings, and bit-vectors. Additionally, constants
5375 are never referenced through SYMBOL-VALUE at runtime.
5376 * optimization: code defining methods on PRINT-OBJECT (and other
5377 generic functions in the COMMON-LISP package) now loads faster.
5378 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
5380 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
5381 fasl is now deleted. (reported by Attila Lendvai)
5382 * bug fix: READ-LINE always returned NIL for the last line in files.
5383 (reported by Yoshinori Tahara)
5384 * bug fix: more accurate disassembly annotations of foreign function
5385 calls. (thanks to Andy Hefner)
5386 * bug fix: trimming non-simple strings and non-string string
5387 designators when the there is nothing to trim works properly.
5388 (thanks to James Knight)
5389 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
5390 (thanks to Travis Cross)
5391 * fixed some bugs revealed by Paul Dietz' test suite:
5392 ** NIL is a valid function name (regression at 1.0.13.38)
5393 ** FILL on lists was missing its return value (regression at 1.0.12.27)
5394 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
5395 fill pointers properly (regression at 1.0.12.23)
5396 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
5397 displacement indices properly (regression at 1.0.12.23)
5399 changes in sbcl-1.0.17 relative to 1.0.16:
5400 * temporary regression: user code can no longer allocate closure
5401 variable storage on stack, due to bug 419 without explicitly
5402 requesting it. Please consult sbcl-devel for advice if you need to
5403 use this feature in the meanwhile.
5404 * new feature: runtime argument --control-stack-size can be used to
5405 adjust thread default control stack size.
5406 * enhancement: improved TIME output
5407 ** all times are reported using the measured accuracy (milliseconds
5408 for real and GC times, microseconds for everything else.)
5409 ** processor cycle counts on x86 and x86-64.
5410 ** interpreted forms are counted for both evaluator modes.
5411 ** number of lambdas converted by the compiler is reported.
5412 ** CPU percentage report (computed from real and total run time.)
5413 ** more comprehensive run time reporting, using a condenced format
5414 ** interperted form, lambda, and page fault counts are omitted
5416 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
5418 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
5419 * optimization: two argument forms of LAST are upto ~10% faster
5420 in normal SPEED policies.
5421 * optimization: NCONC no longer needs to heap cons its &REST list
5422 in normal SPEED policies.
5423 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
5424 to Sidney Markowitz)
5425 * bug fix: UNION and NUNION work with :TEST-NOT once more,
5426 regression since 1.0.9.1. (thanks to Eric Marsden)
5427 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
5428 since 1.0.15.36. (thanks to Paul Khuong)
5429 * bug fix: LAST when always returned the whole list when given a bignum
5430 as the second argument.
5431 * bug fix: dynamic extent allocation of nested lists and vectors
5432 could leak to otherwise accessible parts.
5433 * bug fix: invalid optimization of heap-allocated alien variable
5435 * bug fix: fasl header checking is less vulnerable to different
5436 platform word lengths.
5437 * bug fix: more correct assembler syntax for GNU binutils
5438 2.18.50.0.4 support. (thanks to Marijn Schouten)
5439 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
5441 * bug fix: the fopcompiler can handle LOCALLY forms (with no
5442 declarations) successfully. (reported by Attila Lendvai)
5444 changes in sbcl-1.0.16 relative to 1.0.15:
5445 * minor incompatible change: revert the changes to sb-posix's error
5446 signaling added in 1.0.14.
5447 * minor incompatible change: change PROBE-FILE back to returning
5448 NIL whenever we can't get a truename, as was the case before 1.0.14.
5449 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
5450 inherits from ERROR instead of just CONDITION.
5451 * new feature: SB-INTROSPECT can provide source locations for instances
5452 as well. (thanks to Tobias Rittweiler)
5453 * optimization: binding special variables now generates smaller code
5454 on threaded platforms.
5455 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
5456 and cases where no :TEST is given but the compiler can infer that
5457 the element to search is of type (OR FIXNUM (NOT NUMBER)).
5458 * optimization: better LOGNOT on fixnums.
5459 * optimization: modular arithmetic for a particular requested width
5460 is implemented using a tagged representation unless a better
5461 representation is available.
5462 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
5463 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
5464 for wellformedness and returns a specialized vector. (reported by
5465 Francois-Rene Rideau)
5466 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
5467 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
5468 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
5469 unscheduling timer at the same time as another timer fires.
5470 * bug fix: don't reschedule timers for dead threads.
5471 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
5472 * bug fix: copying output from RUN-PROGRAM to a stream signalled
5473 bogus errors if select() was interrupted.
5474 * enhancement: add support for fcntl's struct flock to SB-POSIX.
5476 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
5477 * enhancement: cleaner backtraces for interactive interrupts, as
5478 well as other cases where the interesting frames used to be
5479 obscured by interrupt handling frames.
5480 * enhancement: untracing a whole package using (UNTRACE "FOO") is
5481 now supported, and tracing a whole package using (TRACE "FOO") now
5482 traces SETF-functions as well.
5483 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
5484 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
5485 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
5486 * unreadably printed representation of hash-tables now includes
5488 * bug fix: partially fixed #188: type propagation from assignments
5489 is now more efficient.
5490 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
5491 'DOUBLE-FLOAT) are not flushable.
5492 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
5493 full address of the object, and none of the tag bits.
5494 * bug fix: readably printing hash-tables now respects other printer
5495 control variables. (reported by Cedric St-Jean)
5496 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
5497 keyword with MAKE-HASH-TABLE.
5498 * bug fix: export SB-POSIX:MKSTEMP.
5499 * bug fix: SORT was not interrupt safe.
5500 * bug fix: XREF accounts for the last node of each basic-block as
5502 * bug fix: MAKE-INSTANCE optimizations interacted badly with
5503 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
5504 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
5505 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
5506 create obsolete instances in the case of redefinition or
5507 obsoletion of a superclass. (thanks to Andy Hefner)
5508 * bug fix: Support for the Alpha architecture has been revived; it had
5509 suffered somewhat from lack of maintenance since sbcl-1.0.
5510 * improvements to the Windows port:
5511 ** The system detects the codepage to use at startup, instead of
5512 using the value from the saved core. (thanks to Kei Suzuki)
5514 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
5515 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
5516 (see documentation for details.)
5517 * revived support for OpenBSD (contributed by Josh Elsasser)
5518 * partially fixed bug #108: ROOM no longer suffers from occasional
5519 (AVER (SAP= CURRENT END)) failures.
5520 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
5521 bodies no longer cause a WARNING to be signalled. (reported by
5523 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
5524 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
5525 the bug in TRUNCATE.) (reported by Michael Weber)
5526 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
5527 no samples. (reported by Andy Hefner)
5528 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
5529 no longer appear as (NIL ...) frames in backtraces.
5530 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
5531 is now actually exported from SB-EXT as documented. (reported by
5533 * bug fix: sb-aclrepl now correctly understands how to inspect
5534 single-floats on 64-bit platforms where single-floats are not boxed.
5535 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
5536 yet been finalized. (reported by Levente Meszaros)
5537 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
5538 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
5539 SBCL-specific optimize qualities.
5541 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
5542 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
5543 an executable in the search path, and does so in the child
5544 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
5545 been removed; it can be found in the CVS history, for somebody who
5546 needs that search behavior (see the manual).
5547 * minor incompatible change: compiler policy re. weakening type
5548 checks has changed: now type checks are weakened only if SAFETY < 2
5550 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
5551 unparsing of directory pathnames as files. Analogously,
5552 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
5553 filename to parse into a directory pathname.
5554 * enhancement: implicit generic function creation now signals a
5555 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
5556 users can bind handlers for and muffle around calls to LOAD.
5557 * enhancement: RUN-PROGRAM allows unicode arguments and environments
5558 to be used (using the default stream external format), and allows
5559 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
5560 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
5561 strings and vectors whose element-type or simplicity is not fully
5562 known at compile-time.
5563 * optimization: STRING-TRIM and related functions no longer allocate
5564 a new string when no trimming needs to be performed. These functions
5565 are also faster than before when the input string has been declared
5567 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
5568 * optimization: READ-LINE is significantly faster for files containing
5570 * optimization: non-open coded uses of character comparison operators
5571 (e.g. char=) no longer cons when called with more than one parameter
5572 on platforms supporting dynamic-extent allocation.
5573 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
5574 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
5575 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
5577 * bug fix: some sequence functions elided bounds checking when
5579 * bug fix: too liberal weakening of union-type checks when SPEED >
5581 * bug fix: more bogus fixnum declarations in ROOM implementation
5584 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
5585 * new feature: MAKE-HASH-TABLE now experimentally accepts a
5586 :SYNCHRONIZED argument, which makes the hash-table safe for
5587 concurrent accesses (but not iteration.) See also:
5588 SB-EXT:WITH-LOCKED-HASH-TABLE, and
5589 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
5590 * optimization: CONCATENATE on strings is an order of magnitude faster
5591 in code compiled with (> SPEED SPACE).
5592 * optimization: SUBSEQ is ~50% faster on lists.
5593 * bug fix: bug 417 fixed -- source location reporting is now more robust.
5594 * bug fix: SUBSEQ on a list will now correctly signal an error if if
5595 END is smaller then START.
5596 * bug fix: SB-PROFILE will no longer report extra consing for nested
5597 calls to profiled functions.
5598 * bug fix: ROOM implementation had bogus fixnum declarations which
5599 could cause type-errors when calling ROOM on large images.
5600 * bug fix: if file compilation is aborted, the partial fasl is now
5601 deleted, and COMPILE-FILE returns NIL as the primary value.
5602 * bug fix: number of thread safety issues relating to SBCL's internal
5603 hash-table usage have been fixed.
5604 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
5605 be returned from its body when the values were being returned
5606 using unknown-values return convection and the W-P-O was wrapped
5607 inside an UNWIND-PROTECT.
5608 * bug fix: sb-posix should now compile again under Windows, enabling
5609 slime to work again.
5611 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
5612 * incompatible change: hash-table accessor functions are no longer
5613 automatically protected by locks. Concurrent accesses on the same hash-table
5614 from multiple threads can give inconsistent results or even corrupt the
5615 hash-table completely. Multi-threaded applications should do their own
5616 locking at the correct granularity. In the current implementation it is
5617 still safe to have multiple readers access the same table, but it's not
5618 guaranteed that this property will be maintained in future releases.
5619 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
5620 and will signal an error at runtime.
5621 * enhancement: SB-THREAD package now exports a semaphore interface.
5622 * enhancement: CONS can now stack-allocate on x86 and
5623 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
5625 * enhancement: nested lists can now be stack allocated on
5626 platforms providing stack allocation support.
5627 * enhancement: dynamic-extent support has been extended to support
5628 cases where there are multiple possible sources for the stack
5630 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
5631 if the mutex is uncontested on Linux.
5632 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
5633 as specified by the CLHS. (thanks to Tobias Rittweiler)
5634 * bug fix: NaN comparison now works on x86-64.
5635 * bug fix: CLOSE :ABORT T on a stream with pending output now
5637 * bug fix: instances of non-standard metaclasses using standard
5638 instance structure protocol sometimes missed the slot type checks
5640 * bug fix: known functions can be inlined in high-debug code.
5642 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
5643 * minor incompatible change: the MSI installer on Windows no longer
5644 associates .lisp and .fasl files with the installed SBCL.
5645 * minor incompatible change: :UNIX is no longer present in *FEATURES*
5646 on Windows. (thanks to Luis Oliviera)
5647 * new feature: SB-CLTL2 contrib module now implements
5648 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
5649 * optimization: scavenging weak pointers is now more efficient,
5650 requiring O(1) instead of O(N) per weak pointer to identify
5651 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
5652 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
5653 method bodies using constant slot-names when the first argument is
5654 a specializer parameter for the method.
5655 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
5656 names, when the class of the instance is a direct instance
5657 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
5658 as slow as the constant slot-name case.)
5659 * optimization: member type construction is now O(N) instead
5661 * optimization: UNION and NUNION are now O(N+M) for large
5662 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
5664 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
5665 now more readable in environments like Slime which display it.
5666 (thanks to Tobias C. Rittweiler)
5667 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
5668 was able to infer the correct argument type for the object on which
5669 the CAS operation was being performed.
5670 * bug fix: copy propagation interfered with parallel assignment
5671 semantics in local calls. (reported by Paul Khuong)
5672 * bug fix: the signed modular fixnum shift compiled to wrong code on
5673 x86 and x86-64. (spotted by a slight modification to some of
5676 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
5677 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
5678 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
5679 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
5681 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
5682 and generic function now print the object identity for anonymous
5683 instances. (thanks to Attila Lendvai)
5684 * enhancement: as an extension to MOP, SBCL now supports SETF of
5685 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
5686 (thanks to Attila Lendvai)
5687 * enhancement: sb-cover has an alternate annotation mode which puts
5688 the form annotations at the car of the form, instead of annotating
5689 it completely. The benefit of this mode is that it shows better
5690 which forms were instrumented by the compiler.
5691 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
5692 by printer control variables. (reported by Dan Corkill)
5693 * bug fix: system leaked memory when delayed output was performed by
5694 the OS in smaller chunks then expected. (thanks to David Smith)
5695 * bug fix: system leaked memory when file streams were not closed
5697 * bug fix: large objects written to slow streams that were modified
5698 after the write could end up with the modified state written to
5699 the underlying file descriptor.
5700 * bug fix: multiple threads operating in parallel on the same stream
5701 could cause buffer-overflows.
5702 * bug fix: source location information is stored correctly
5703 (broken since 1.0.6). This bug would generally show up as the
5704 Slime debugger highlighting the wrong form when the sldb-show-source
5706 * bug fix: Branch forms are again annotated as branches in the sb-cover
5708 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
5709 on x86-64. (reported by Gregory Vanuxem)
5710 * bug fix: EQUALP could return wrong results for structures with raw
5711 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
5712 word). (reported by Vjacheslav Fyodorov)
5713 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
5716 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
5717 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
5718 atomic compare-and-swap operations on threaded platforms.
5719 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
5720 allows assigning a global minimum value to optimization qualities
5721 (overriding proclamations and declarations).
5722 * enhancement: closed over variables can be stack-allocated on x86
5724 * performance bug fix: GETHASH and (SETF GETHASH) are once again
5726 * optimization: slot definition lookup is now O(1). This speeds up
5727 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
5728 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
5729 * optimization: ASSOC and MEMBER can now be open-coded for all
5730 combinations of keyword arguments when second argument is constant
5731 and SPEED >= SPACE. In other cases a specialized version is
5733 * bug fix: using obsoleted structure instances with TYPEP and
5734 generic functions now signals a sensible error.
5735 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
5736 (reported by Kristoffer Kvello)
5737 * bug fix: backtrace construction is now more careful when making
5738 lisp-objects from pointers on the stack, to avoid creating bogus
5739 objects that can be seen by the GC.
5740 * bug fix: defaulting of values in contexts expecting more than 7
5741 variables now works on x86-64. (reported by Christopher Laux)
5742 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
5744 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
5745 as the property-list of a symbol.
5746 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
5747 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
5748 situations requested, are once again file-compileable. (reported
5751 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
5752 * MOP improvement: support for user-defined subclasses of
5753 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
5754 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
5755 the expansion of DEFMETHOD, is responsible for generating a form
5756 which creates a list of specializers when evaluated. Additional
5757 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
5758 debugging and introspective support.
5759 * minor incompatible change: the (unsupported) spinlock interface
5760 has changed: free spinlock now has the value NIL, and a held spinlock
5761 has the owning thread as its value.
5762 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
5763 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
5765 * enhancement: name of a socket-stream is now "a socket" instead of
5766 "a constant string".
5767 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
5768 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
5769 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
5770 for generic functions. (Thanks to Tobias C. Rittweiler)
5771 * optimization: bignum printing speed has been improved by 20-40%
5772 (depending on the bignum size.)
5773 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
5775 * bug fix: the cache used by the CLOS to store precomputed effective
5776 methods, slot offsets, and constant return values is now thread and
5778 * bug fix: generic function dispatch function updating is now thread
5779 and interrupt safe (in the sense that the known issues have been
5781 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
5782 * bug fix: interning EQL-specializers is now thread and interrupt safe.
5783 * bug fix: asdf systems with dependencies to the SB-POSIX or
5784 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
5785 * bug fix: interrupt safety of applicable method computation has been
5788 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
5789 * new contrib: sb-cover, an experimental code coverage tool, is included
5790 as a contrib module.
5791 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
5792 significantly faster.
5793 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
5794 produce more efficient code on x86-64 if the compiler can determine
5795 that (+ INDEX <constant>) does not require a bounds check and FOO
5796 has an element type at least 8 bits wide.
5797 * enhancement: a new, experimental synchronous timeout facility is
5798 provided. Refer to SB-SYS:WITH-DEADLINE for details.
5799 * enhancement: when a symbol name conflict error arises, the
5800 conflicting symbols are always printed with a package prefix.
5801 (thanks to Kevin Reid)
5802 * enhancement: stepping is now once again supported on the SPARC and
5803 MIPS platforms. (It is also now more likely to work on CheneyGC
5805 * enhancement: sb-sprof can now also track and report accurate call
5807 * bug fixes: the treatment of non-standard subclasses of
5808 SB-MOP:SPECIALIZER is more correct.
5809 * incompatible change: PURIFY no longer copies the data from the
5810 dynamic space into the static and read-only spaces on platforms
5811 that use the generational garbage collector
5812 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
5814 * bug fix: GC race condition occasionally resulting in crashes with
5815 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
5817 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
5819 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
5820 a STYLE-WARNING to be signalled (regression from 1.0.4.)
5821 * bug fix: an asynchronous interrupt could previously leave the
5822 system running with GC inhibited.
5823 * bug fix: a DECLARE form evaluated at top-level now causes an error
5824 rather than silently (or verbosely) returning NIL.
5825 * bug fix: trying to dissassemble functions compiled at high DEBUG could
5826 result in a error being signalled due to source form lookup errors.
5827 (reported by Peter Graves)
5829 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
5830 * incompatible change: removed writer methods for host-ent-name,
5831 host-ent-addresses -- changing the values did not update the DNS
5833 * minor incompatible change: changed experimental JOIN-THREAD interface
5834 * documentation: the manual now lists reader and writer methods
5835 in class slot documentation sections. (thanks to Richard M Kreuter)
5836 * documentation: unwinding from asyncronous events has been
5837 documented as unsafe.
5838 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
5839 in multithreaded application code.
5840 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
5841 platforms. (thanks to James Anderson for the optimization hint)
5842 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
5844 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
5845 variants no longer cons.
5846 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
5847 their NOT- variants no longer cons.
5848 * optimization: EQUAL hash tables no longer use SXHASH for objects
5849 of all data types, but instead use an EQL hash for types for which
5850 EQUAL is the same as EQL.
5851 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
5852 are significantly faster.
5853 * optimization: new STRING-OUTPUT-STREAM implementation is much
5854 faster for large outputs and conses 30% less on average.
5855 * enhancement: XREF information is now collected for references made
5856 to global variables using SYMBOL-VALUE and a constant argument.
5857 * enhancement: SIGINT now causes a specific condition
5858 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
5859 * bug fix: FILE-POSITION used to signal an error in some cases where
5860 ANSI requires it to return NIL.
5861 * bug fix: ADJUST-ARRAY is now interrupt-safe.
5862 * bug fix: adding and removing fd-handlers is now interrupt-safe.
5863 * bug fix: inlined calls to C now ensure 16byte stack alignment on
5865 * bug fix: bad type declaration in the CLOS implementation has
5866 been fixed. (reported by James Anderson)
5867 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
5868 (thanks to Lutz Euler)
5869 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
5870 required by the CLHS. (reported by Samium Gromoff)
5871 * bug fix: dead unbound variable references now signal an error.
5872 (reported by Marco Monteiro)
5873 * bug fix: / with an unused value was being deleted in safe code.
5874 (thanks to Marco Monteiro and Kevin Reid)
5875 * bug fix: number of characters that can be written onto a single
5876 line in a file is unlimited.
5877 * bug fix: some GC deadlocks caused by asynchronous interrupts have
5878 been fixed by inhibiting interrupts for when GC is disabled.
5879 * bug fix: some interrupt safety issues with GETHASH, (SETF
5880 GETHASH), CLRHASH and REMHASH have been fixed.
5881 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
5882 specifier no longer causes infinite recursion.
5883 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
5884 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
5885 * bug fix: an &environment argument with the correct variable information
5886 is passed to macros that are expanded during byte compilation.
5887 (reported by Samium Gromoff)
5888 * bug fix: a logic error was causing the hash function for bignums to
5889 have excessive amounts of collisions. (reported by Faré Rideau)
5890 * bug fix: modifying the contents of an array could change the return
5891 value of SXHASH on that array, which is only allowed for strings
5892 and bit vectors. (bug introduced in 0.9.16)
5893 * improvement: the x86-64/darwin port now passes all tests (except
5894 for the debugger tests) but should still be considered
5895 experimental until this is fixed.
5896 * improvement: a style-warning is signaled for CASE (etc) clauses with
5897 duplicate keys. (thanks to Kevin Reid)
5898 * improvement: macos/x86 and macos/x86-64 now use mach exception
5899 handlers for dealing with illegal instructions (for trapping and
5900 error handling) and memory protection violations (for GC).
5902 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
5903 * new platform: experimental support for x86-64/darwin (MacOS).
5904 * incompatible change: the thread-safe (on most platforms) getaddrinfo
5905 and getnameinfo sockets functions are used instead of gethostbyaddr
5906 and gethostbyname, on platforms where the newer functions are available.
5907 As a result, the ALIASES field of HOST-ENT will always be NIL on these
5909 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
5910 don't print the startup banner, but behave as if --noinform was passed
5911 as a command line argument. (thanks to Kevin Reid)
5912 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
5913 * optimization: code using alien values with undeclared types is much faster.
5914 * optimization: the compiler is now able to open code SEARCH in more cases.
5915 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
5916 * bug fix: using standardized COMMON-LISP special variables as loop
5917 variables no longer signals bogus package lock violations. (reported
5919 * bug fix: declaring local loop variables to be of a range-limited type
5920 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
5921 (reported by Andras Simon)
5922 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
5923 bugs remain on x86-64.)
5924 * bug fix: the #= and ## reader macros now interact reasonably with
5925 funcallable instances.
5926 * bug fix: type-checks for function arguments were compiled using the
5927 compiler policy settings of the wrong lexical environment (in 1.0.2
5929 * bug fix: SHADOW accepts characters as string designators, as required
5930 by the spec (thanks to Eric Marsden)
5931 * bug fix: fixed GC safety issues when foreign functions are called with
5932 non-base strings as arguments
5933 * bug fix: more consistent error output for fatal-compiler-warnings, like
5935 * bug fix: functions with proper names were showing up as NIL in
5936 backtraces (reported by Edi Weitz, regression in 1.0.2)
5938 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
5939 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
5940 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
5941 produce more efficient code on the x86 if the compiler can determine
5942 that (+ INDEX <constant>) does not require a bounds check and FOO
5943 has an element type at least 8 bits wide.
5944 * bug fix: references to undefined variables are handled the same way
5945 in toplevel forms as in the normal compiler
5946 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
5948 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
5949 (thanks to Jon Buller)
5950 * improvement: faster compilation times for complex functions
5951 * improvement: added readlink support to SB-POSIX (thanks to Richard
5954 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
5955 * improvement: experimental support for mach exception handling on
5956 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
5958 * improvement: support for GBK external format.
5959 (thanks to Chun Tian (binghe))
5960 * improvement: the debugger now displays variables that have been closed
5961 over, in code compiled with (DEBUG 2) or higher
5962 * improvement: support for executable cores on NetBSD (thanks to
5964 * new feature: added a RESTART-FRAME debugger command
5965 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
5966 be used to provide an implementation for FILE-POSITION on Gray streams
5967 (thanks to Eric Marsden)
5968 * new feature: add syslog, openlog and closelog support to SB-POSIX
5969 (thanks to Richard Kreuter)
5970 * optimization: the function call overhead in code compiled with
5971 a high DEBUG optimization setting is significantly
5972 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
5973 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
5974 (thanks to Tony Martinez)
5975 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
5976 evaluated once (reported by Kevin Reid)
5977 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
5978 works again (thanks to Kilian Sprotte)
5979 * bug fix: an error is signaled for tagbodies with duplicate tags
5980 (thanks to Stephen Wilson)
5981 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
5982 * bug fix: Win32 port can now handle foreign code unwinding Lisp
5983 stack frames from alien callbacks.
5984 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
5985 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
5986 65k pages (thanks to David Woodhouse)
5987 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
5989 changes in sbcl-1.0.1 relative to sbcl-1.0:
5990 * new platform: FreeBSD/x86-64, including support for threading.
5991 * new feature: the compiler stores cross-referencing information
5992 about function calls (who-calls), macroexpansion (who-macroexpands)
5993 and special variables (who-binds, who-sets, who-references) for code
5994 compiled with (< SPACE 3). This information is available through the
5995 sb-introspect contrib.
5996 * new feature: users may subclass SEQUENCE, and have instances of
5997 these classes interoperate with standard Common Lisp functions if
5998 a number of methods are defined. (This feature is experimental
5999 and the interface subject to change based on feedback from SBCL
6000 users and the general community)
6001 * improvement: sb-sprof traces call stacks to an arbitrary depth on
6002 x86/x86-64, rather than the previous fixed depth of 8
6003 * improvement: another pthread back-end of mutex "pthread-futex".
6004 * bug fix: non-ascii command-line arguments are processed correctly
6005 (thanks to Yaroslav Kavenchuk)
6006 * bug fix: non-required arguments were not passed correctly when a method
6007 defined using DEFMETHOD was called from a mop-generated method using
6008 CALL-NEXT-METHOD (reported by Pascal Costanza)
6009 * bug fix: recursion is now permitted in accessors through
6010 SLOT-UNBOUND. (reported by Pascal Costanza)
6011 * bug fix: an error was signaled at startup if the HOME environment
6012 variable was defined, but had an empty value (reported by Peter Van Eynde)
6013 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
6014 signal a PROGRAM-ERROR, not a BUG.
6015 * bug fix: SB-POSIX:READDIR works when built with large file support.
6016 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
6018 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
6019 for better automatic indentation support. (thanks to Matt Pillsbury)
6020 * optimization: loading generic functions no longer takes O(n^2) time,
6021 proportional to the amount of methods in the generic function
6022 (reported by Todd Sabin and Jeremy Brown)
6023 * optimization: the FIND and POSITION family of sequence functions
6024 are significantly faster on arrays whose element types have been
6026 * improvements to the Windows port:
6027 ** Intermittent heap corruption problems have been fixed. (thanks
6028 to Alastair Bridgewater)
6029 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
6031 ** Lisp is able to unwind foreign exception frames from alien
6032 callbacks. (thanks to Alastair Bridgewater)
6034 changes in sbcl-1.0 relative to sbcl-0.9.18:
6035 * improvement: experimental support for threading on FreeBSD/x86.
6036 (thanks to NIIMI Satoshi)
6037 * improvement: runtime option --dynamic-space-size can be used
6038 to set the size of the dynamic space reserved on startup.
6039 * improvement: floating point modes in effect are now saved in
6040 core, and restored on startup.
6041 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
6042 startup, not time since first call to GET-INTERNAL-REAL-TIME.
6043 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
6044 threads are not running after *SAVE-HOOKS* have run.
6045 * improvement: writes to CLOS instance slots are type-checked in code
6046 compiled with (SAFETY 3)
6047 * improvement: floating-point exception handling on FreeBSD (thanks to
6049 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
6050 (thanks to Zach Beane)
6051 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
6053 * improvement: added support for the Shift-JIS external format.
6054 (contributed by NIIMI Satoshi)
6055 * improvement: callbacks are supported on Linux/PPC. (thanks to
6057 * bug fix: compiler bug triggered by a (non-standard) VALUES
6058 declaration in a LET* was fixed. (reported by Kaersten Poeck)
6059 * bug fix: file compiler no longer confuses validated and already
6060 dumped structurres. (reported by Kaersten Poeck)
6061 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
6062 fill-pointer signals a type-error as required. (thanks to
6064 * bug fix: disassemly of funcallable instances works.
6065 * bug fix: single stepping on PPC.
6066 * bug fix: fix thread-safety problems in the type system (generally
6067 manifesting as nonsensical errors like "STRING is a bad type specifier
6068 for sequences" or "The value 1 is not of type FIXNUM")
6069 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
6070 (reported by Josip Gracin)
6071 * bug fix: an error is signaled for attempts to displace arrays with
6072 incompatible element types (thanks to Mario Mommer)
6073 * bug fix: more correct handling of wide characters in debug info
6074 (bug reported by Attila Lendvai and fixed by Juho Snellman)
6075 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
6076 and don't cause extra consing
6077 * optimization: MAP and MAP-INTO are significantly faster on vectors
6078 whose elements types have been declared.
6079 * Improvements to SB-SPROF:
6080 ** Support for allocation profiling
6081 ** Reduced profiling overhead, especially for long profiling runs
6082 * Improvements to the Windows port:
6083 ** floating point exceptions are now reported correctly.
6084 ** stack exhaustion detection works partially.
6085 ** more accurate GET-INTERNAL-REAL-TIME.
6086 ** better RUN-PROGRAM behaviour in case of errors in the child
6088 ** PROBE-FILE now simplifies pathnames correctly.
6089 ** DIRECTORY now works correctly with :WILD-INFERIORS.
6090 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
6091 1st 1970 (although time timezone data will be unreliable).
6092 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
6094 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
6095 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
6096 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
6098 * bug fix: two potential GC deadlocks affecting threaded builds.
6099 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
6100 returns T (reported by Anton Kazennikov)
6101 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
6102 with non-variable places
6103 * bug fix: remove a race condition in the setting of
6104 funcallable-instance functions, this should make threaded CLOS
6105 code more stable against memory faults.
6106 * bug fix: corruption of specials when unbinding is interrupted by an
6107 asynchronous unwind (reported by Hannu Koivisto)
6108 * improvement: the debugger will now also display local variables that
6109 are only used once, for code compiled with a DEBUG optimization quality
6112 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
6113 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
6114 * incompatible change: External-format support for FFI calls. The
6115 SB-ALIEN:C-STRING no longer implies an ASCII
6116 external-format. Instead the string is subject to external-format
6117 conversion. Additionally return values of type SB-ALIEN:C-STRING
6118 are by default of type (SIMPLE-ARRAY CHARACTER), not
6119 SIMPLE-BASE-STRING. For an alien type that behaves like the old
6120 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
6121 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
6122 * incompatible change: SB-EXT package no longer contains the
6123 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
6124 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
6126 * incompatible change: the single-stepper is no longer available
6127 on Alpha, Mips and Sparc platforms.
6128 * minor incompatible change: the direct superclasses of
6129 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
6130 not (STANDARD-OBJECT FUNCTION). This makes the
6131 class-precedence-lists of GENERIC-FUNCTION and
6132 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
6134 * minor incompatible change: the default stream external format on
6135 non-unicode SBCL is no longer detected from the locale, but is always
6137 * new feature: Add a version of evaluator that uses an interpreter instead
6138 of the compiler. EVAL still uses the compiler by default, to switch it
6139 to use the interpreter, set the value of the variable
6140 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
6141 * minor incompatible change: the single-stepper REPL has been merged
6142 with the normal debugger (see the "Stepping" heading of the debugger help
6143 for more details). The debugger command STEP will no longer switch
6144 to the single-stepper REPL.
6145 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
6146 for a type now works.
6147 * bug fix: loading of default sysinit file works. (thanks to Leonid
6149 * bug fix: better detection of circularities in the file-compiler.
6150 (reported by Marco Monteiro)
6151 * bug fix: the CL pathname functions now work with files that have
6152 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
6153 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
6154 systems with Unix98 pty semantics.
6155 * bug fix: ASDF-INSTALL will now work with bsd tar.
6156 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
6158 * bug fix: timers expiring in dead threads no longer cause a
6159 type-error (reported by Paul "Nonny Mouse").
6160 * bug fix: thanks to more lightweight single-stepper instrumentation,
6161 code compiled with (DEBUG 3) will compile and execute significantly faster,
6162 and will have more accurate type-inferencing than before
6163 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
6164 whose bindings are modified
6165 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
6166 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
6167 ** replace dummy implementations of CL:MACHINE-INSTANCE and
6168 CL:SOFTWARE-VERSION with proper version
6170 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
6171 * feature: implemented the READER-METHOD-CLASS and
6172 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
6173 as specified by AMOP.
6174 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
6176 * optimization: faster LOGCOUNT implementation on x86 and x86-64
6177 (thanks to Lutz Euler)
6178 * optimization: hashing of general arrays and vectors has been
6179 improved. (reported by Any Fingerhut)
6180 * enhancement: SB-INTROSPECT is now able to find definitions of
6181 profiled functions. (thanks to Troels Henriksen)
6182 * enhancement: compiler-macro expansion applies now to FUNCALL forms
6183 as well, allowing compiler-macros for SETF-functions to expand.
6184 * enhancement: step-instrumentation no longer wraps known
6185 single-value functions with multiple-value context, allowing
6186 better type inference.
6187 * fixed bug #337: use of MAKE-METHOD in method combination now works
6188 even in the presence of user-defined method classes. (reported by
6189 Bruno Haible and Pascal Costanza)
6190 * fixed bug #339(c): if there are applicable methods not part of any
6191 long-form method-combination group, call INVALID-METHOD-ERROR.
6192 (reported by Bruno Haible)
6193 * fixed bug #361: the :FUNCTION initarg in the protocol for
6194 initialization of methods can now be used to override
6195 internally-produced optimized functions. (reported by Bruno
6197 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
6198 system-provided lambda expression no longer cause warnings about
6199 unbound #:|pv-table| symbols.
6200 * bug fix: improved the handling of type declarations and the
6201 detection of violations for keyword arguments with non-constant
6203 * bug fix: potentially erronous calls to PATHNAME and
6204 MERGE-PATHNAMES were being flushed in some cases.
6205 (reported by Richard Kreuter)
6206 * bug fix: compiled calls to TYPEP were mishandling obsolete
6207 instances. (reported by James Bielman and Attila Lendvai)
6208 * bug fix: format strings with ~> without matching ~< no longer
6209 trigger an AVER, but signal an understandable error instead.
6210 (reported by Antonio Martinez)
6211 * bug fix: specifying an output-file without a pathname-type for
6212 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
6213 of input-file instead of "fasl". (reported by Robert Dodier)
6214 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
6215 (reported by James Y Knight).
6216 * bug fix: compiler-macros-function did not consider the environment
6217 argument for shadowing by local functions.
6218 * bug fix: compiler-macros expansion was inhibited by local INLINE
6220 * bug fix: inline expansions of known functions were subject to
6221 step-instrumentation in high debug policies, leading to problems
6222 with type-inference.
6223 * bug fix: compiler failed to differentiate between different CONS
6224 types in some cases.
6225 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
6226 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
6227 * bug fix: #368: incorrect use of expressed vs. upgraded array
6229 * bug fix: #306a: more precise unions of array types.
6230 * thread-safety improvements:
6231 ** CONDITION-WAIT could return early on Linux, if the thread was
6232 interrupted and subsequently continued with SIGCONT.
6233 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
6235 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
6236 * added support for the ucs-2 external format. (contributed by Ivan
6238 * minor incompatible change: pretty printing of objects of type
6239 (cons symbol) is, in the default pprint-dispatch-table, now
6240 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
6242 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
6243 called later in a class's lifetime, possibly as late as when the
6244 first instance of the class is created. Previously,
6245 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
6246 class became finalizeable.
6247 * fixed bug: FILE-POSITION sometimes returned inconsistent results
6248 for multibyte external-format streams. (thanks to "vbzoli")
6249 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
6250 with :ALLOCATION :CLASS inherited from superclasses of the
6252 * fixed bug: anonymous classes can now be created using the :NAME
6253 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
6254 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
6255 * fixed bug: core-files saved with :EXECUTABLE T can again be
6256 executed when SBCL_HOME isn't set. (reported by James Knight)
6257 * fixed bug: toplevel LOCALLY forms with declarations could
6258 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
6259 * fixed bug: printing from several different threads using different
6260 values of *print-case* could cause invalid output, due to
6261 some internal special variables of the printer not being bound
6262 thread-locally (reported by Max Mikhanosha)
6263 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
6264 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
6265 (reported by Pascal Costanza)
6266 * fixed bug: FINALIZE-INHERITANCE is called from
6267 REINITIALIZE-INSTANCE on classes when the class has previously
6268 been finalized, as required by AMOP.
6269 * minor code generation optimizations:
6270 ** better register allocation in CLOS dispatching functions
6271 ** overflow detection when coercing signed bytes to fixnums on x86-64
6272 ** is now implemented with one IMUL instruction instead of three shifts
6273 ** more efficient bit-vector access on x86 and x86-64
6274 ** more efficient access to raw structure slots on x86 and x86-64
6275 * fixed some bugs revealed by Paul Dietz' test suite:
6276 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
6277 return its argument.
6279 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
6280 * feature: thread support on Solaris/x86, and experimental thread support
6282 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
6284 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
6285 default method for SLOT-UNBOUND.
6286 * minor incompatible change: prevent the user from specializing the
6287 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
6288 somewhat counter to the intent of the protocol, I (CSR) think, and
6289 additionally it just doesn't work in SBCL as currently
6290 implemented, thanks to optimizations (that are always valid for
6291 the other three SLOT-VALUEish functions, but not for the setter).
6292 * minor incompatible change: the :SB-LDB feature is now enabled by
6293 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
6294 the low-level debugger.
6295 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
6296 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
6297 down to an SB-SYS:FD-STREAM, allowing direct communication in
6298 more cases. Temporary files and pipes are still used as a fallback
6300 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
6301 on the non-reentrant C functions localtime(3) and gmtime(3).
6302 * bug fix: global optimization policy was not visible in LOCALLY and
6304 * bug fix: class objects can be used as specializers in methods.
6305 (reported by Pascal Costanza)
6306 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
6307 with a type error. (reported by blitz_ on #lisp)
6308 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
6309 failed with a type error. (reported by Pascal Bourguignon)
6310 * bug fix: merging pathnames against defaults with :DIRECTORY
6311 starting with '(:RELATIVE :BACK) should preserve the :BACK.
6312 (reported by James Y Knight)
6313 * bug fix: saving large (>2GB) cores on x86-64 now works
6314 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
6315 constant index and a (simple-array (signed-byte 32)) array
6316 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
6317 error (patch by Robert J. Macomber)
6318 * feature: TIME now displays the amount of run-time spent in GC
6319 * bug fix: The debugger now does a better job of respecting
6320 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
6321 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
6322 workaround for bug 403.)
6323 * bug fix: floating point exception handling now works on FreeBSD
6324 (thanks to NIIMI Satoshi)
6325 * fixed some bugs revealed by Paul Dietz' test suite:
6326 ** MISC.641: LET-conversion were not supposed to work in late
6328 * improvements to the Win32/x86 port:
6329 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
6330 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
6332 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
6333 * new feature: source path information is generated for macro-expansion
6334 errors for use in IDE's like Slime (thanks to Helmut Eller)
6335 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
6336 * bug fix: compiler does not loop forever on an invalid type in
6338 * improvement: compilation of most CLOS applications is significantly
6340 * optimization: added a limited bytecode compiler for simple toplevel
6341 forms, speeding up compilation and FASL loading
6342 * bug fix: the statistical profiler now properly distinguishes anonymous
6345 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
6346 * minor incompatible change: in sbcl-0.9.11 (but not earlier
6347 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
6348 into subclasses of the finalized class. Now user calls to
6349 FINALIZE-INHERITANCE finalize just the one class, and calls by the
6350 system return before any subclasses are finalized.
6351 * minor incompatible change: The reader no longer ignores errors
6352 regarding non-existent packages in #+ and #- feature tests.
6353 * new feature: command line options --no-sysinit, --no-userinit to
6354 inhibit loading the corresponding init files
6355 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
6356 for sending data through UDP sockets (thanks to François-René Rideau)
6357 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
6358 error is signalled instead (thanks to François-René Rideau)
6359 * minor incompatible change: Error signalling behaviour of lexical
6360 operations violating package locks has changed slightly. Refer to
6361 documentation on package locks for details.
6362 * enhancement: EVAL can process IF-expressions without resorting to the
6364 * bug fix: Some operations involving SIN, COS, or TAN weren't being
6365 constant-folded properly due to missing out-of-line functions.
6366 (reported by Mika Pihlajamäki)
6367 * bug fix: LISTEN sometimes returned T even in cases where no data was
6368 immediately available from the stream
6369 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
6370 were reversed. (reported by Levente Mészáros)
6371 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
6372 when given a vector displaced to an adjustable array. (reported
6374 * bug fix: derivation of float boundaries from numbers outside the
6375 appropriate float range (reported by John Wiseman)
6376 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
6378 * bug fix: precomputing cache entries for generic functions with
6379 some subclasses of specializers as yet invalid does not attempt to
6380 fill a cache line with a negative offset. (reported by Levente
6382 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
6383 allow condition class objects as arguments to DOCUMENTATION and
6384 (SETF DOCUMENTATION); only find and set documentation for
6385 structure names for the STRUCTURE doc-type. (suggested by Gary
6387 * improvements to the Win32/x86 port:
6388 ** (user-homedir-pathname) and default initialization file
6389 locations now know about the user's "Documents and Settings"
6390 directory (thanks to Yaroslav Kavenchuk)
6391 ** run-program is implemented (thanks to Mike Thomas)
6392 ** sockets support (thanks to Timothy Ritchey)
6393 ** better backtrace support (thanks to Alastair Bridgewater)
6394 ** sb-grovel supported
6395 ** asdf-install and sb-posix work somewhat
6396 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
6397 * improvements to the Solaris/x86 port:
6398 ** works on Solaris 11/Solaris Express
6399 ** floating-point exception handling support
6400 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
6401 * fixed some bugs revealed by Paul Dietz' test suite:
6402 ** REMOVE-METHOD returns its generic function argument even when
6403 the method is not one of the generic functions' methods.
6404 ** objects declared as MEMBER types can be admissible arguments to
6405 structure accessors.
6406 ** printing characters should simply be printed by the FORMAT ~:C
6408 ** compiler failure when compiling functions with hairy constant
6409 defaults for optional parameters.
6410 ** compiler produces wrong code when MAYBE-INLINE-expanding a
6411 function, which is already optimized.
6413 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
6414 * new platform: experimental support for SBCL x86/Darwin, including
6415 MacOS X 10.4.5 on Intel.
6416 * new feature: Unicode character names are now known to the system
6417 (through CHAR-NAME and NAME-CHAR).
6418 * new feature: the filesystem location of SBCL's core file is
6419 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
6420 * minor incompatible change: the contrib modules SB-POSIX and
6421 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
6422 this change is to make it easier to distribute
6423 location-independent binaries.
6424 * bug fix: as implied by AMOP, standardized classes no longer have
6425 slots named by external symbols of public packages. (reported by
6427 * optimization: calling functions via constant symbols -- as in
6428 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
6429 via the function object as in (FUNCALL #'FOO).
6430 * optimization: on x86 and x86-64, the calling convention for the
6431 case of dealing with an unknown number of values has been altered
6432 to be friendlier to the prediction heuristics implemented,
6433 particularly with reference to CALL and RET pairing. (thanks to
6434 Alastair Bridgewater)
6435 * optimization: on x86, the code for access to thread-local symbol
6436 values and binding/unbinding of thread-local symbols is smaller.
6437 (thanks to Alastair Bridgewater)
6438 * enhancement: CONSTANTP is now able to determine constantness of
6439 more complex forms, including calls to constant-foldable standardized
6440 functions and some special forms beyond QUOTE.
6441 * fixed bug: occasional GC crashes on Solaris/x86
6442 * optimization: x86-64 supports stack allocation of results of simple
6443 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
6444 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
6445 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
6446 (thanks to James Knight)
6447 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
6448 by the standard (thanks to Stephen Compall)
6450 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
6451 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
6452 be used for bundling the runtime and the core file into one
6453 executable binary. This feature is not currently supported on all SBCL
6454 platforms. (thanks to James Bielman and NIIMI Satoshi)
6455 * new feature: a generational or ephemeral garbage collector is now
6456 the default on the PowerPC platform (both Linux and Darwin). The
6457 old Cheney (stop and copy) collector is a build-time option.
6458 (thanks to Cyrus Harmon, after Raymond Toy)
6459 * minor incompatible change: the method by which SBCL finds its
6460 contributed modules has changed; it no longer relies on symbolic
6461 links from an $SBCL_HOME/systems directory, but searches directly
6462 in the subdirectories of $SBCL_HOME.
6463 * enhancement: the dynamic heap size on the Linux/PPC platform is
6464 markedly larger, even using the older Cheney garbage collector.
6465 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
6466 certain complicated string types. (reported by Gary King)
6467 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
6468 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
6469 * fixed bug: DOCUMENTATION on structures no longer signals an
6470 error if no structure type of the right name exists. (reported by
6472 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
6473 applicable non-standard primary or :AROUND method on
6474 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
6475 no longer cause unbound variable errors. (reported by Kevin Reid)
6476 * fixed bug: metacircle resolution in cases where methods have slots
6477 added before the slots from STANDARD-METHOD. (reported by Jean
6479 * fixed bug: the Power PC assembly code for calling into lisp
6480 sometimes computed its return address wrongly (depending on the
6481 15th bit of the address, fixed at link time). This used to
6482 manifest itself in a segmentation violation while building PCL.
6483 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
6484 many others over the years)
6485 * fixed bug: ROOM no longer reports silly numbers for stack usage if
6486 the stack pointer (treated as a signed integer) is negative.
6487 (thanks to Peter van Eynde)
6489 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
6490 * new platform: experimental support for the Windows operating
6491 system has been added. (thanks to Alastair Bridgewater)
6492 * fixed several bugs in and robustified the PPC FFI (including
6493 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
6494 * bug fix: allow non-simple string symbol names (reported by Paul
6496 * bug fix: interrupt handling on NetBSD (thanks to Richard M
6498 * bug fix: saving a core corrupted callbacks on x86/x86-64
6499 * bug fix: closed a loophole in metacircularity detection and
6500 grounding in the PCL implementation of CLOS.
6501 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
6502 (reported by tomppa on #lisp)
6503 * bug fix: clear the direction flag on Lisp -> C transitions, as
6504 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
6505 (reported by Andrej Grozin and Hendrik Maryns)
6506 * optimization: major improvements to GC efficiency on GENCGC platforms
6507 * optimization: faster implementation of EQUAL
6508 * optimization: emit more efficient opcodes for some common
6509 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
6510 * optimization: several other minor code-generation improvements on x86-64
6511 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
6513 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
6514 * minor incompatible change: (SETF CLASS-NAME) and (SETF
6515 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
6516 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
6517 by ANSI as a generic function, and for consistency (SETF
6518 GENERIC-FUNCTION-NAME) is treated likewise.
6519 * fixed bug #233.b: make constraint propagation notice when a variable
6520 value is changed after it is referenced but before it is used
6521 * fixed bug #296: no more arbitrary behaviour from filenames with
6522 odd characters as --load arguments. (reported by Adam Warner)
6523 * fixed bug #390: :CHARACTER-SET pathname components now work as
6524 expected. (reported by Tim Daly Jr)
6525 * fixed bug #391: complicated :TYPE intersections in slot
6526 definitions no longer cause an error in PCL internals.
6527 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
6528 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
6529 returning the number of octets which would be written to the
6530 file-stream. (thanks to Robert J. Macomber)
6531 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
6532 arguments to the internal stream functions. (thanks to David
6534 * bug fix: stack exhaustion is now handled on the x86/SunOS
6535 platform. (thanks to Daisuke Homma)
6536 * bug fix: more accurate ROOM results on GENCGC platforms
6537 * optimization: improved type inference for arithmetic-for
6538 index variables in LOOP
6539 * optimization: faster floating-point SQRT on x86-64
6540 * fixed some bugs revealed by Paul Dietz' test suite:
6541 ** DOCUMENTATION returns NIL instead of "" for method combinations
6542 that don't have a docstring
6544 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
6545 * minor incompatible change: (SETF CLASS-NAME) and (SETF
6546 GENERIC-FUNCTION-NAME) are no longer generic functions, and
6547 therefore are not customizeable by user code (as seems to be at
6548 least permitted and maybe required by AMOP). As a consolation,
6549 however, the SBCL implementation of these functions now calls
6550 REINITIALIZE-INSTANCE as specified by AMOP.
6551 * bug fix: slot-definition documentation is propagated as per ANSI
6552 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
6553 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
6554 argument, as do eslotd initialization methods. (from Pascal
6555 Costanza's "Closer" project)
6556 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
6557 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
6559 * bug fix: it is now possible to have more than one subclass of
6560 STANDARD-GENERIC-FUNCTION without causing stack overflow.
6561 (reported by Bruno Haible, Pascal Costanza and others)
6562 * bug fix: the dependent update protocol now works for generic
6563 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
6564 and Pascal Costanza)
6565 * bug fix: condition-class instances corresponding to
6566 DEFINE-CONDITION forms are now created eagerly. (reported by
6567 Kalle Olavi Niemitalo on comp.lang.lisp)
6568 * bug fix: floating point printing is more accurate in some
6569 circumstances. (thanks to Simon Alexander)
6570 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
6571 merged with *DEFAULT-PATHNAME-DEFAULTS*.
6572 * bug fix: callbacks on OS X now preserve stack-alignment.
6573 (thanks to Cyrus Harmon)
6574 * enhancement: the x86-64 disassembler is much better at
6575 disassembling SSE instructions. (thanks to Lutz Euler)
6576 * enhancement: CHECK-TYPE on a variable now allows type-inference
6577 (thanks to Vincent Arkesteijn)
6578 * optimization: improved performance of EUC-JP external format.
6579 (thanks to NIIMI Satoshi)
6580 * optimization: performance improvements to IO on file streams of
6581 :ELEMENT-TYPE CHARACTER
6582 * optimization: much faster memory allocation on x86-64
6583 * optimization: faster garbage collections (latency and throughput)
6585 * optimization: faster bignum subtraction and division on x86 and x86-64
6586 (thanks to Lutz Euler)
6587 * optimization: more accurate type-inference for loops that use a
6588 floating point index variable or a negative step.
6590 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
6591 * bug fix: add a workaround to SBCL looping infinitely at startup on
6592 Linux kernels with apparently buggy implementations of personality().
6593 (thanks to Svein Ove Aas)
6594 * bug fix: Unicode symbols are correctly printed in LDB backtraces
6595 (thanks to David Lichteblau)
6596 * bug fix: local bindings shadow global symbol macros for
6597 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
6598 * optimization: non-open coded uses of numeric comparison operators
6599 (e.g. >) no longer cons when called with more than one parameter
6600 on platforms supporting dynamic-extent allocation.
6601 * enhancement: saving cores with foreign code loaded is now supported
6602 on MIPS/Linux in addition to the previously supported platforms.
6603 * bug fix: FIND-RESTART now tests for activity, not applicability when given
6604 a restart object as identifier. (reported by Helmut Eller for CMUCL)
6605 * bug fix: division by zero in sb-sprof when no samples were collected
6606 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
6607 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
6608 (thanks to Alexander Kjeldaas)
6609 * new feature: ignoring the return values of destructive functions
6610 like NREVERSE signals a compile-time style-warning.
6611 (thanks to Kevin Reid)
6612 * new feature: the alignment of alien structure fields can be
6613 explicitly specified. (thanks to Cyrus Harmon)
6614 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
6615 and dump core on SIGQUIT
6617 ** incompatible change: threads do not inherit values of specials
6618 from their parents (see manual)
6619 ** bug fix: threads stacks belonging to dead threads are freed by the
6620 next exiting thread, no need to gc to collect thread stacks anymore
6621 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
6622 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
6623 ** bug fix: dynamic variable and thread start related gc lossage
6624 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
6626 * fixed some bugs revealed by Paul Dietz' test suite:
6627 ** SUBTYPEP is slightly more accurate on heinously complicated
6628 CONS types where some of the members have uncertain (in the
6629 NIL, NIL sense) type relationships to each other.
6631 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
6632 no longer purified unless :PURIFY T is explicitly specified.
6633 ** Non-purified cores are significantly smaller than before
6635 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
6636 * new feature: timers based on Zach Beane's excellent timer package
6637 * added support for the following external formats: koi8-u,
6638 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
6639 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
6640 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
6641 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
6642 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
6643 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
6644 * incompatible change: a threaded SBCL will no longer revert to
6645 non-threaded mode on non-NPTL systems, but refuse to start entirely.
6646 * bug fix: interrupts are disabled until startup is complete; no
6647 more sigsegvs when receiving a signal to soon
6648 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
6650 * bug fix: add a workaround for the memory randomization features in
6651 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
6652 workaround will only be in effect on systems with the proc filesystem
6654 * bug fix: printing objects of type HASH-TABLE signals a
6655 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
6657 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
6658 have been running for over 50 days. (reported by Gilbert Baumann)
6659 * bug fix: the logic for getting names of functions gets less
6660 confused when confronded with alternate-metaclass
6661 funcallable-instances. (reported by Cyrus Harmon)
6662 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
6663 consistent, even on internal alternate-metaclass objects.
6664 * bug fix: flush closure information collected by physical
6665 environment analysis prepass before the main pass. (bug reported
6667 * bug fix: compiler pack phase does not modify a hashtable, which is
6668 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
6669 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
6670 may be expanded. (reported by Alexander <malishev> on c.l.l)
6671 * bug fix: no more style-warnings when compiling code using LAST
6672 under high-SPEED low-SPACE settings. (reported by David Wallin
6674 * fixed some incompatibilities between SBCL's MOP and the MOP
6676 ** the METAOBJECT class is now implemented;
6677 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
6678 STANDARD-OBJECT, as required;
6679 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
6680 now compatible (as required by VALIDATE-SUPERCLASS); there
6681 remains a consistency requirement over the presence or absence
6682 of the FUNCTION class in the superclass list of finalized
6683 classes; see the manual for more details;
6684 ** the :AROUND method for COMPUTE-SLOTS on
6685 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
6686 requested slot ordering.
6688 ** bug fix: parent thread now can be gc'ed even with a live
6690 ** bug fix: binding a special with PROGV to no value is not
6691 the same as that symbol not having been bound (thanks to
6693 ** bug fix: binding specials is thread safe (thanks to
6695 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
6696 and SB-SPROF do not die with 'no handler for signal XX in
6697 interrupt_handle_now(..)' anymore
6698 ** bug fix: WITH-TIMEOUT works with multiple running threads
6699 * fixed some bugs revealed by Paul Dietz' test suite:
6700 ** ENSURE-GENERIC-FUNCTION should take a method class object for
6701 the :method-class keyword argument.
6703 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
6704 * new port: the Solaris operating system on x86 processors is now
6705 mostly supported, though some rough edges in the environment
6706 remain. (thanks to Daisuke Homma)
6707 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
6708 space for its heap. (thanks to Thiemo Seufer)
6709 * optimization: SBCL on MIPS platforms now supports dynamic-extent
6710 closures. (thanks to Thiemo Seufer)
6711 * minor incompatible change: eof selects abort in the debugger.
6712 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
6713 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
6715 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
6716 deprecated, and will go away in a future revision of SBCL.
6717 * minor incompatible change: GC-ON and GC-OFF are no longer
6718 implemented with a counter, it does not matter how many times gc
6719 is switched on or off
6720 * bug fix: discriminating functions for generic function classes
6721 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
6722 make invalid assumptions about method precedence order. (reported
6724 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
6725 platforms. (thanks to Thiemo Seufer)
6726 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
6727 * bug fix: correct pathname printing with printer escaping is on.
6728 (thanks to Kevin Reid)
6729 * bug fix: complex VOP definitions in "user-space" no longer trigger
6730 package locks. (reported by Zach Beane)
6731 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
6732 for funcallable-instance functions, and is no different from
6734 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
6735 characters in the current readtable. (reported by Nicholas Neuss)
6736 * bug fix: SUBTYPEP on various CONS types returns more a more
6737 accurate acknowledgment of its certainty.
6738 * optimizations: REMOVE-DUPLICATES now runs in linear time on
6739 lists in some cases. This partially fixes bug 384.
6740 * flush all standard streams before prompting in the REPL and the
6742 * bug fix: signal handling and triggering gc do not conflict
6743 directly anymore, in particular a high frequency sb-sprof does
6744 not prevent gc from running
6745 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
6746 approximation for timezone and DST information between the
6747 universal time epoch and the smallest negative 32-bit time_t.
6748 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
6749 year 1899 so long as the encoded time is non-negative.
6750 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
6751 the correct answer for non-constant rotate amounts when performing
6752 an inline 32-bit rotation.
6754 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
6755 there is only one thread in the session
6756 ** bug fix: memory leak for streams created in one thread and
6757 written to in another
6758 ** bug fix: lockup when compiled with gcc4
6759 ** bug fix: race that allows the gc to be triggered when gc is
6761 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
6762 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
6764 ** bug fix: finished threads are gc'ed properly
6765 * fixed some bugs revealed by Paul Dietz' test suite:
6766 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
6767 has arguments with a different set of applicable methods from
6768 the orignal arguments.
6769 ** The type error thrown by MAP now has a correct expected-type
6771 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
6772 name a compiled function.
6773 ** Three MISC tests where a large bignum was improperly coerced to
6774 a float that couldn't represent that bignum during type
6775 derivation were fixed.
6776 ** SUBTYPEP can now handle types involving the negation of a
6777 list-form FUNCTION type.
6778 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
6779 as (COMPLEX (AND RATIO (NOT FIXNUM))).
6780 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
6782 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
6783 * New feature: Experimental support for bivalent streams: streams
6784 opened with :element-type :default now allow character and binary
6785 (unsigned-byte 8) I/O
6786 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
6787 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
6789 * bug fix: no more highly sporadic "couldn't check whether ~S is
6790 readable" when reading a stream and an interrupt hits in the middle
6791 of a select system call
6792 * compiler better recognizes complex arrays (reported by Eduardo
6794 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
6795 for variables on SBCL built with linkage-tables. (reported by Luis
6797 * various error reporting improvements.
6798 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
6799 (Thanks to Thiemo Seufer)
6800 * bug fix: nested reader invokations work correctly
6801 * bug fix: it is possible to have simultaneous references to foreign
6802 code and foreign data with the same name.
6804 ** added x86-64 support
6805 ** incompatible change: the threading api now works with thread
6806 objects instead of thread ids
6807 ** bug fix: threads are protected from signals and interruption when
6808 starting up or going down
6809 ** bug fix: a race where an exiting thread could lose its stack to gc
6810 ** bug fix: don't halt on infinite error in threads if possible
6811 ** fixed numerous gc deadlocks introduced in the pthread merge
6812 ** bug fix: fixed thread safety issues in read and print
6813 ** bug fix: debugger doesn't hang on session lock if interrupted at
6814 an inappropriate moment
6815 ** bug fix: run-program is now thread safe(r)
6816 ** bug fix: inner with-recursive-lock no longer releases the mutex
6817 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
6818 * fixed some bugs revealed by Paul Dietz' test suite:
6819 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
6820 EXPECTED-TYPE slots filled.
6821 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
6823 ** MAKE-CONDITION accepts classes as type-designators.
6824 ** COMPILE may never return NIL.
6825 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
6826 range before calling Unix time functions
6828 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
6829 * numerous signal handling fixes to increase stability
6830 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
6831 * minor incompatible change: we now correctly canonize default
6832 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
6833 as per the MOP, rather than the historical (INITARG INITFUNCTION
6834 INITFORM). (reported by Bruno Haible)
6835 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
6836 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
6837 for more information.
6838 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
6839 pathname is a directory pathname.
6840 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
6841 * dynamic space size on PPC has been increased to 768Mb. (thanks to
6843 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
6844 :METACLASS argument in addition to a class name. (reported by
6845 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
6846 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
6847 (reported by Bruno Haible; patch from Gerd Moellmann)
6848 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
6850 * bug fix: more cleanups to the floating point exception handling on
6851 x86-64 (thanks to James Knight)
6852 * bug fix: the compiler does not try to constant fold calls of
6853 COERCE and BIT-* functions when they return freshly constructed
6854 objects. (reported by Nikodemus Siivola and Paul Dietz)
6855 * optimization: improved the MIPS versions of generic (in the
6856 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
6857 * optimization: direct conversion of (unsigned-byte 32) to floats on
6858 the PowerPC platform.
6859 * optimization: structure instances with raw slots now use less
6860 memory, and probably show better memory locality. (thanks to
6862 * optimization: DYNAMIC-EXTENT declarations for lists and closures
6863 are treated as requests for stack allocation on the x86-64,
6864 Alpha-32, PPC and SPARC platforms.
6865 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
6866 the wrong file descriptor; implementation of SOCKET-OPEN-P.
6867 (thanks to Tony Martinez)
6869 ** gcing a dead thread can no longer lead to lockups
6870 ** threads block signals until they are set up properly
6871 ** errno is no longer shared by threads
6872 ** interrupt-thread restores the eflags register on x86
6873 ** fixed some lockups due to gc/thread interaction
6874 * fixed some bugs revealed by Paul Dietz' test suite:
6875 ** invalid dotted lists no longer raise a read error when
6876 *READ-SUPPRESS* is T
6877 ** signal an error if a symbol that names a declaration is used
6878 as the name of a type, or vice versa
6879 ** allow using the (declare (typespec var*)) abbreviation for
6880 (declare (type typespec var*)) with all type specifiers
6881 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
6882 ** always return NIL from PPRINT-POP when OBJECT is NIL
6883 ** don't signal errors when pretty-printing malformed LABELS,
6884 FLET or MACROLET forms
6885 ** declarations in a DOLIST body are also in scope for the
6887 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
6889 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
6892 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
6893 * fixed cross-compiler leakages that prevented building a 32-bit
6894 target with a 64-bit host compiler.
6895 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
6896 opened with :IF-EXISTS :OVERWRITE.
6897 * fixed bug 281: error for an invalid qualifier in a short-form method
6898 combination method is not signalled until the faulty method is called.
6899 * bug fix: iteration variable type inferrer failed to deal with open
6900 intervals. (reported by Alan Shields)
6901 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
6902 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
6903 or more runtime options were provided to the sbcl binary.
6904 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
6905 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
6906 * optimization: there's now a fast-path for fixnum arguments in the
6907 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
6908 * optimization: the code generated on x86-64 is more compact thanks
6909 to not outputting unnecessary prefix bytes. (Thanks to Lutz Euler)
6910 * bug fix: floating-point exception handling now partly works on
6911 x86-64. (Thanks to James Knight)
6912 * improvement to the MIPS backend from Thiemo Seufer: C-style
6913 64-bit long long arguments and return values to alien functions
6915 * fixed some bugs revealed by Paul Dietz' test suite:
6916 ** the type-error signalled from WARN has a filled-in DATUM slot.
6917 ** the type-error required when a stream is not associated with
6918 a file has the stream as its datum.
6919 ** type-errors on single-floats on x86-64 no longer have
6920 :INVALID-OBJECT as the datum
6921 ** the type-errors signalled for invalid function names now have
6922 a correct expected type
6923 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
6924 for structures defined with a :TYPE. Documentation strings for
6925 typed structures are no longer immediately discarded
6926 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
6927 broadcast streams and synonym streams. FILE-LENGTH now also works
6928 on broadcast streams.
6930 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
6931 * incompatible change: the --noprogrammer option, deprecated since
6932 version 0.7.5, has been removed. Please use the equivalent
6933 --disable-debugger option instead.
6934 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
6936 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
6937 inoperational for a while now) has been completely removed.
6938 * null lexical environments are now printed as #<NULL-LEXENV>,
6939 significantly reducing the amount of clutter in typical backtraces.
6940 * documentation on weak pointers, finalization, and after GC hooks
6941 has been added to the manual.
6942 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
6943 as other specialized array types, is much faster. SUBSEQ and
6944 COPY-SEQ on such arrays have also been sped up.
6945 * optimization: EQL is now more efficient when at least other argument
6946 is known to be of type (OR FIXNUM (NOT NUMBER)).
6947 * fixed bug: the runtime is now less vulnerable to changes in the
6948 size of the SBCL object on OS X, and virtual memory is reserved for
6949 all spaces that need to be at a fixed address.
6950 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
6951 * fixed bug: finalizers and after GC hooks that cause consing are now
6953 * fixed bug: compiler error messages and summaries are now printed to
6954 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
6955 * fixed inference of the upper bound of an iteration variable.
6956 (reported by Rajat Datta).
6957 * fixed bug 211e: calling local functions with duplicated constant
6958 keyword argument no longer causes a bogus style warning about an
6960 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
6961 ftype declaration to be disregarded. (reported by Dave Roberts)
6962 * fixed bug 373: caused by erronous compilation of references to alien
6963 variables in the runtime on ppc/darwin.
6964 * fixed bug 376: CONJUGATE type deriver.
6965 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
6966 (reported by Baughn on #lisp)
6967 * a cross-compiler bug on non-x86 platforms has been identified and
6968 fixed. (thanks to Bruno Haible)
6969 * improvements to the MIPS runtime code for increased stability.
6970 (thanks to Thiemo Seufer)
6971 * increased the maximimum compact environment size to allow
6972 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
6973 * partial workaround for bug 135: don't name the function we're
6974 calling for hairy cases of EVAL, so as not to accumulate one environment
6975 entry per call to EVAL. (reported by Kevin Reid)
6976 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
6977 * optimization: type testing for non-vector arrays should be faster.
6978 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
6980 * bug fix: setting 31st element of a bit vector to zero did not work
6982 * bug fix: redefining a class definition which failed due to a
6983 previous accessor / function clash now works (but see BUGS entry
6984 #380 for more problems in this area). (thanks to Zach Beane)
6985 * the long form of DEFINE-METHOD-COMBINATION disables method group
6986 checking when given a single method group with pattern *. (thanks
6988 * on x86 compiler supports stack allocation of results of simple
6989 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
6990 * support for building and running on Mac OS X 10.4 "Tiger" has been added
6991 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
6992 * fixed some bugs related to Unicode integration:
6993 ** the restarts for recovering from input and output encoding
6994 errors only appear when there is in fact such an error to
6996 * fixed some bugs revealed by Paul Dietz' test suite:
6997 ** MISC.549 and similar: late transformation of unsafe type
6998 assertions into derived types caused unexpected code
7000 ** SCALE-FLOAT type deriver is less wrong.
7001 ** type derivers for EXP, LOG and similar functions compute result
7002 types for complex arguments better.
7003 ** (MISC.563) CONJUGATE type deriver works for very restricted
7005 ** out-of-line type testers for character strings are available.
7006 ** EQUAL compiler transform understands specialness of objects
7008 ** accessing double-floats stored on the stack now works on x86-64.
7009 ** debugger internals could sometimes create invalid lispobjs,
7010 resulting in GC crashes.
7011 ** MISC.548: type check weakening can convert required type into
7013 ** initialization forms for bindings are not in scope of free special
7016 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
7017 * incompatible change: thread support for non-NPTL systems has
7018 been removed - locking is buggy and unreliable. A threaded
7019 SBCL build will now warn at startup and refuse to create
7020 new threads, unless futex support is detected in the kernel
7021 * incompatible change: the top level REPL now has only an ABORT
7022 restart associated with it, not TOPLEVEL and ABORT as it used to.
7023 TOP and TOPLEVEL are now available as debugger commands for
7024 returning to the top level.
7025 * incompatible change: forms evaluated in the REPL now use the
7026 global optimization policy.
7027 * incompatible change: user- and system-initialization files are
7028 no longer processed with LOAD, but by READ and EVAL; hence the
7029 global optimization policy, startup package, readtable, etc,
7031 * The .fasl file format number has been incremented because of
7032 various incompatible changes.
7033 * internal entry point details and argument counts no longer appear
7034 in backtraces unless explicitly requested by setting
7035 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
7036 * built-in and standard functions no longer have names like "top
7037 level local call to FOO".
7038 * fixed bug 32: functions defined in non-null lexical environments
7039 now have more legible printed representation
7040 * fixed bug 33: functions defined in non-null lexical environemnts
7041 are now more amenable to inspection by INSPECT.
7042 * workaround for bug 354: XEPs no longer appear in backtraces unless
7043 explicitly requested.
7044 * fixed bug: receiving the signal which results from attempting to
7045 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
7046 SIGBUS on other *BSDs) on architectures where the C stack is also
7047 the Lisp stack (x86 and x86-64) from foreign code no longer leads
7048 to debugger confusion or wild instability. (reported by Cheuksan
7050 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
7051 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
7052 (reported by Lutz Euler)
7053 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
7054 compiled code. (reported by Paul Dietz)
7055 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
7056 specialized parameter to a method to something that is not TYPEP
7057 the specializer is now possible.
7058 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
7059 face of package deletion.
7060 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
7061 pathname. (reported by David Tolpin on c.l.l)
7062 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
7063 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
7064 STRING-STREAM and FILE-STREAM, respectively.
7065 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
7066 than previously; in addition, its test suite is now run on build.
7067 (thanks to Luke Gorrie)
7068 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
7069 * optimization: added a immediate representation for single-floats
7071 * fixed some bugs revealed by Paul Dietz' test suite:
7072 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
7073 ** attempting to create a package with a colliding nickname causes
7074 correctable errors to be signalled.
7075 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
7076 ** several x86-64 backend bugs related to sign-extension of immediate
7079 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
7080 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
7081 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
7083 * fixed loading of multiply forward-referenced layouts.
7084 (thanks to Cheuksan Wang)
7085 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
7086 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
7087 (see COMPILE-FILE documentation for details of :PRINT option)
7088 * fixed bugs 19 and 317: fixed-format floating point printing is
7089 more accurate. This also fixes a bug reported by Adam Warner
7090 related to the ~@F format directive.
7091 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
7093 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
7094 dispatch table if the from-char is a dispatch macro character.
7095 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
7096 by the wordsize no longer ignore the last word. (reported by Lutz
7098 * fixed bug in type checking of dynamic-extent variables. (reported
7100 * optimization: sequence traversal functions use their freedom to
7101 coerce function designators to functions.
7102 * optimization: code with many calls to CLOS methods specialized on
7103 CLOS classes has had redundant type checks removed.
7104 * optimization: added declarations to speed up operations that access
7105 the internal character database (for example STRING-UPCASE)
7106 * optimization: comparison operations between floats and sufficiently small
7107 fixnums no longer create extra rationals
7108 * fixed some bugs related to Unicode integration:
7109 ** portions of multibyte characters at the end of buffers for
7110 character-based file input are correctly transferred to the
7111 start of the buffer at the next read.
7112 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
7113 passing it through to OPEN.
7114 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
7115 argument given to internal calls to OPEN.
7116 ** the built-in comment readers (introduced by character sequences
7117 ";" and "#|") are more forgiving to encoding errors; they will
7118 STYLE-WARN and then attempt to resync the stream at a character
7119 boundary. (thanks to Teemu Kalvas)
7120 * fixed some bugs in the x86-64 port:
7121 ** Negative short int return values from c-calls are sign-extended
7123 ** The stack is aligned to 16-bytes for c-calls, as required by
7124 the ABI. (thanks to Cheuksan Wang)
7125 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
7126 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
7127 for enums. (thanks to Vincent Arkesteijn)
7128 ** Multiple small optimizations and bugfixes for floating point
7130 * fixed some bugs revealed by Paul Dietz' test suite:
7131 ** Space, Tab, Linefeed, Return and Page have the invalid
7132 secondary constituent character trait.
7133 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
7135 ** WITH-INPUT-FROM-STRING should only update the index place on
7137 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
7138 works more reliably.
7139 ** Bit-array operations (BIT-AND and similar) worked incorrectly
7140 with one-dimensional arrays with fill pointers.
7141 ** TYPE-OF failed on a complex with an integer realpart and a
7143 ** compiler failure during type inference for the code of form
7144 (IF (EQL X (THE ...)) ...) (MISC.535).
7146 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
7147 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
7148 platform. The port supports 61-bit fixnums, large memory spaces
7149 and reloading shared object files.
7150 * enhancement: saving cores with foreign code loaded is now
7151 supported on ppc/Darwin in addition to the previously supported
7153 * enhancement: the statistical profiler now walks deeper into the
7154 call stack for more meaningful call-graphs and accrued time
7155 reports (x86/x86-64 only). It also now reports time spent in
7157 * enhancement: it is now possible to trace most individual methods
7158 of a generic function in addition to tracing the generic function
7160 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
7162 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
7163 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
7164 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
7165 produces an error. (thanks to Vincent Arkesteijn)
7166 * bug fix: NAMESTRING on pathnames with :WILD components in their
7167 directories works correctly. (thanks to Artem V. Andreev)
7168 * fixed bug 125: compiler preserves identity of closures. (reported
7170 * bug fixed: functions with &REST arguments sometimes failed with
7171 "Undefined function" when compiled with (DEBUG 3). (reported by
7173 * bug fix: overflow during compiling of setting element of a bit
7174 vector with constant index and value. (reported by Timmy Douglas)
7175 * build fix: fixed the dependence on *LOAD-PATHNAME* and
7176 *COMPILE-FILE-PATHNAME* being absolute pathnames.
7177 * on x86 compiler partially supports stack allocation of dynamic-extent
7179 * GO and RETURN-FROM do not check the extent of their exit points
7180 when compiled with SAFETY 0.
7181 * fixed some bugs related to Unicode integration:
7182 ** encoding and decoding errors are now much more robustly
7183 handled; it should now be possible to recover even from invalid
7184 input or output to the terminal. (thanks to Teemu Kalvas)
7185 ** provided a first cut at implementing STRING-TO-OCTETS and
7186 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
7187 ** altered the SB-MD5 contributed module slightly, changing the
7188 interface just enough for it to be supportable for builds where
7189 lisp characters are not eight bits.
7190 * fixed some bugs revealed by Paul Dietz' test suite:
7191 ** the FORMATTER-generated functions for ~V[ conditionals require
7192 the correct number of arguments.
7193 ** READ-FROM-STRING returns the mandated second value when applied
7194 to displaced strings.
7195 ** the #\Rubout and #\Backspace characters are treated as invalid
7196 constituent characters by the tokenizer.
7198 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
7199 * new feature: reloading changed shared object files with
7200 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
7201 * new feature: references to foreign variables and functions
7202 can now be compiled and loaded before the corresponding shared
7203 object file is loaded, as long as the foreign definitions are
7204 available at runtime.
7205 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
7206 supported. (thanks to Dan Debertin)
7207 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
7208 just keywords. (thanks to Vincent Arkesteijn)
7209 * fixed bug #331: structure-class instances corresponding to
7210 DEFSTRUCT forms are now created eagerly.
7211 * fixed bug #345: backtraces from calls to undefined functions work
7212 on x86 as well. Related bug #61 is now also partially fixed on x86
7213 (backtraces from throws to unknown catch tags.)
7214 * bug fix: lambda-list parsing is now stricter vrt. order and number
7215 of lambda-list keywords.
7216 * bug fix: as specified by AMOP, an error is signalled if a
7217 class-option appears multiple times in a DEFCLASS form. (reported
7219 * bug fix: RANDOM can be compiled when the compiler derives the type
7220 of its numeric argument as a disjoint set of small integers.
7221 (reported by Paul Dietz)
7222 * bug fix: starting a core saved with shared objects loaded when
7223 those objects are not available no longer causes threaded SBCL to
7224 hang. (reported by Sean Ross)
7225 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
7227 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
7228 argument, which must always be NIL. (reported by Kalle Niemitalo)
7229 * bug fix: printing 1.0d+23 no longer results in an error.
7230 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
7231 * bug fix: structure slot setters preserve evaluation order. (thanks
7233 * fixed some bugs related to Unicode integration:
7234 ** RUN-PROGRAM can allow its child to take input from a Lisp
7235 stream. (reported by Stefan Scholl)
7236 ** ASDF-INSTALL successfully downloads .tar.gz files in all
7237 locales. (reported by Ken Causey)
7238 * fixed some bugs revealed by Paul Dietz' test suite:
7239 ** INCF, DECF and REMF evaluate their place form as specified in
7241 ** FORMATTER expands ~{ ~} iteration directives with V or #
7242 parameters correctly.
7243 ** FORMATTER deals with the ~@[ ~] conditional directive where the
7244 consequent uses no arguments correctly.
7245 ** the system has a partial understanding of the (COMPLEX RATIO)
7247 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
7250 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
7251 * new feature: a build-time option (controlled by the :SB-UNICODE
7252 keyword feature, enabled by default) for building the system with
7253 support for the entire 21-bit character space defined by the
7255 * new feature: the system now has rudimentary external-format
7256 support; the primary user-visible change at this time is that
7257 characters with the high bit set (such as lower-case-e-acute) will
7258 print correctly to a terminal in a UTF-8 environment.
7259 * minor incompatible change: BASE-CHAR no longer names a class;
7260 however, CHARACTER continues to do so, as required by ANSI.
7261 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
7262 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
7263 has been moved to the SB-EXT package (temporarily re-exported from
7265 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
7266 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
7268 * fixed bug #351: better error-handlind and reporting for malformed
7270 * fixed bug #350: bignum-printing is now more memory-efficient,
7271 allowing printing of very large bignums, eg. (expt 2 10000000).
7272 (reported by Bruno Haible)
7273 * fixed bug #302: better primitive-type selection for intersection
7275 * fixed bug #308: non-graphic characters now all have names, as
7276 required. (reported by Bruno Haible)
7277 * bug fix: redefining a class with different superclasses now correctly
7278 removes it from the direct-subclasses of its previous superclasses.
7279 (reported by David Morse)
7280 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
7281 new value now works. (reported by Bruno Haible)
7282 * bug fix: correct canonicalization of multiple non-standard slot
7283 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
7284 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
7285 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
7286 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
7287 now exists, an signals an error.
7288 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
7289 during macroexpansion for non-iteration variables as well. (reported
7290 by Bruno Haible for CMUCL)
7291 * bug fix: Cyclic structures and unprintable objects in compiler
7292 messages no longer cause errors. (reported by Bruno Haible)
7293 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
7294 and READ-FROM-STRING all now return a primary value of NIL if
7295 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
7296 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
7297 (reported by Bruno Haible for CMUCL)
7298 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
7299 do not designate a condition. (reported by Bruno Haible for
7301 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
7302 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
7303 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
7304 permitting resolution in favour of any of the conflicting symbols.
7305 (reported by Bruno Haible for CMUCL)
7306 * bug fix: EQUAL compiler optimizations is less aggressive on
7307 strings which can potentially compare true despite having distinct
7308 specialized array element types.
7309 * bug fix: unit enumerations can be defined without dividing by
7310 zero. (thanks to Vincent Arkesteijn)
7311 * FORMAT compile-time argument count checking has been enhanced.
7312 (report from Bruno Haible for CMUCL)
7313 * a partial workaround for the bug 262: the compiler does not try to
7314 inline-expand a local function doing RETURN-FROM from a deleted
7315 BLOCK. (thanks to Peter Denno for the bug report and to David
7316 Wragg for the simple test case)
7317 * fixed some bugs revealed by Paul Dietz' test suite:
7318 ** RENAME-PACKAGE allows all package designators as new package
7320 ** constraint propagation and lambda variable substitution are
7321 more cautious in dealing with partially deleted code.
7322 ** compiler sometimes lost reoptimization passes.
7323 ** CERROR, given a condition as condition designator, passes its
7324 remaining arguments to the continue format control without
7326 ** Case-altering FORMAT directives work correctly on non-ASCII
7328 ** The REAL type specifier handles bounds outside the floating
7329 point ranges without signalling FLOATING-POINT-OVERFLOW.
7330 ** Functions with IR1-transformations can create intercomponent
7331 references to global functions.
7332 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
7334 ** FORMAT ~R treats a nil value for its first parameter correctly.
7336 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
7337 * enhancement: saving cores with foreign code loaded is now
7338 supported on x86/NetBSD and sparc/Linux in addition to the previously
7339 supported platforms.
7340 * bug fix: on some platforms repeated installations caused multiple
7341 copies of HTML documentation to be installed -- should not happen
7342 any more. (reported by Stefan Scholl)
7343 * bug fix: parsing self-recursive alien record types multiple times
7344 no longer causes infinite recursion. (reported by Thomas F. Burdick,
7345 original patch by Helmut Eller for CMUCL)
7346 * bug fix: stack-exhaustion detection works now on NetBSD as well.
7347 (thanks to Richard Kreuter)
7348 * bug fix: defining classes whose accessors are methods on existing
7349 generic functions in other (locked) packages no longer signals
7350 bogus package lock violations. (reported by François-René Rideau)
7351 * bug fix: special variables as DEFMETHOD parameters no longer have
7352 associated bogus type declarations. (reported by David Wragg and
7354 * bug fix: read-write consistency on streams of element-type
7355 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
7356 * bug fix: redefiniton of the only method of a generic function with
7357 no DEFGENERIC no longer emits a full WARNING. In addition,
7358 redefinition of generic functions with no DEFGENERIC to an
7359 incompatible lambda list now signals an error. (thanks to Zach
7361 * bug fix: DEFGENERIC now works even when there's a function of the
7362 same name in an enclosing lexical environment. (thanks to Zach
7364 * fixed compiler failure, caused by instrumenting code during
7365 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
7366 * optimization: added loop analysis and improved register allocation
7367 * fixed some bugs revealed by Paul Dietz' test suite:
7368 ** POSITION on displaced vectors with non-zero displacement
7369 returns the right answer.
7370 ** (SIMPLE-STRING) is a valid type specifier for sequence
7372 ** *PRINT-LEVEL* handling for slotless structures is pedantically
7374 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
7375 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
7377 ** The justification version of the FORMAT ~< directive treats
7378 non-zero minpad parameter correctly.
7380 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
7381 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
7382 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
7383 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
7384 the supported interface.
7385 * new feature: Single-stepping of code compiled with DEBUG 2 or
7386 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
7387 * new feature: saving cores with foreign code loaded is now
7388 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
7389 Timothy Moore's work for CMUCL)
7390 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
7391 parameters to * instead of NIL if no initform is supplied.
7392 (reported by Johan Bockgaard)
7393 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
7394 correctly when FUNCALL appears as the car of the form. Note:
7395 despite this FUNCALL forms are not currently subject to
7396 compiler-macro expansion. (port of Raymond Toy's fix for the
7397 same from CMUCL, reported by Johan Bockgaard)
7398 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
7399 (thanks for Teemu Kalvas)
7400 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
7401 case instead of terminating the iteration (thanks for Julian
7402 Squires, Sean Champ and Raymond Toy)
7403 * bug fix: incorrect expansion of defgeneric that caused a style
7404 warning. (thanks for Zach Beane)
7405 * bug fix: slot accessor effective method computation works properly
7406 for classes with multiple non-standard applicable methods on
7407 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
7408 * on x86 compiler supports stack allocation of results of LIST and
7409 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
7410 CMUCL implementation by Gerd Moellmann)
7411 * fixed some bugs revealed by Paul Dietz' test suite:
7412 ** FORMAT strings with both the ~<~:;~> form of the justification
7413 directive and pretty-printing directives cause an error.
7415 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
7416 * incompatible change: the internal functions
7417 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
7418 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
7419 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
7420 instead of the old functions.
7421 * new feature: on platforms where "dladdr" is available foreign
7422 function names now appear in backtraces. (based on Helmut Eller's
7424 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
7425 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
7427 * documentation: ASDF manual is now distributed with SBCL.
7428 * bug fix: SBCL can now load its contributed modules with REQUIRE
7429 even if the system-provided entries have been removed from
7430 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
7432 * bug fix: backtraces involving undefined functions or assembly
7433 routines are more informative. (thanks to Brian Downing)
7434 * bug fix: mutually referent alien structures now work correctly.
7435 (reported by Rick Taube)
7436 * bug fix: structures defined by WITH-ALIEN can be referred to
7437 within other definitions in the same WITH-ALIEN.
7438 * bug fix: division operators (MOD, TRUNCATE and the like) with
7439 constant zero divisors and integer dividends no longer generate
7441 * bug fix: provide default methods for INPUT-STREAM-P and
7442 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
7443 * bug fix: improve the detection and resolution of MOP metacycles
7444 (where effective method computation depends on the generic function
7445 having its effective method computed). (reported by Bruno Haible)
7446 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
7447 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
7448 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
7449 * bug fix: pathnames with relative directory components can be
7450 represented relative to default pathnames.
7451 * optimization: in taking the GCD of bignums, reduce the two bignums
7452 to approximately the same size (using Euclid's algorithm) before
7453 applying the more sophisticated binary GCD. (thanks to Juho
7455 * optimization: COUNT on bitvectors now operates word-at-a-time.
7456 * optimization: ASH with a positive, but not necessarily constant,
7457 (leftwards) shift, when in a modular context, is compiled to a
7459 * fixed some bugs revealed by Paul Dietz' test suite:
7460 ** FORMAT variable parameters ("~V<char>") are defaulted properly
7461 if the corresponding argument is NIL.
7462 ** FORMAT directives accepting a minpad parameter treat negative
7464 ** literal commas as character parameters to FORMAT directives are
7466 ** literal spaces directly after ~<Newline> directives within a
7467 format-logical-block (~:< ~@:>) do not induce :FILL-style
7468 conditional newlines.
7469 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
7470 as specified: it no longer includes conditional newlines).
7471 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
7473 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
7474 :PER-LINE-PREFIX argument does not evaluate to a string.
7476 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
7477 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
7478 the manual for details; for now, package locks can be disabled by
7479 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
7480 if no major problems are found then it is likely that they will be
7481 compiled in unconditionally.
7482 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
7483 unsupported operators on all platforms. To load a shared library
7484 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
7485 object file, link it into a shared library outside of SBCL and
7486 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
7488 * bug workaround: ROOM T and the GC were not working together
7489 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
7490 reporting facility aren't preserved. That reporting has been
7491 disabled, so now until and unless someone figures out how to make it
7492 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
7493 * minor incompatible change: as threatened around sbcl-0.8.0, the
7494 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
7495 The symbols are also exported from SB-PCL for backwards
7496 compatibility, but more so than before SB-PCL should be treated as
7497 an implementation-internal package.
7498 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
7500 * the SB-SPROF contrib now works on (most) non-x86 architectures.
7501 It is known as of this release not to work on the Alpha, however.
7502 * fixed bug #167: errors signalled due to illegal syntax in method
7503 bodies are now more legible.
7504 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
7505 designators and can hence be used with TYPEP.
7506 * fixed bug #333: CHECK-TYPE now ensures that the type error
7507 signalled, if any, has the right object to be accessed by
7508 TYPE-ERROR-DATUM. (reported by Tony Martinez)
7509 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
7510 5.1.2.3 for multiple-value place subforms. (reported by Kalle
7512 * fixed bug #334: programmatic addition of slots using specialized
7513 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
7514 and :ALLOCATION :CLASS slots.
7515 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
7516 float exponents. (rereported by Peter Seibel)
7517 * fixed a bug: #\Space (and other whitespace characters) are no
7518 longer considered to be macro characters in standard syntax by
7519 GET-MACRO-CHARACTER.
7520 * fixed bug: initialization of condition class metaobjects no longer
7521 causes an instance of the condition to be created. (reported by
7523 * fixed bug: it is now possible to have slots such that
7524 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
7525 description is neither :INSTANCE nor :CLASS.
7526 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
7527 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
7528 SLOT-VALUE-USING-CLASS), and no longer causes errors with
7529 non-standard SLOT-DEFINITION-ALLOCATION values.
7530 * fixed bugs: various race conditions handling exiting threads.
7531 CL-PPCRE's thread torture test now passes.
7532 * fixed arguably-a-bug: GC time proportional to number of threads in
7533 system even when most of them are idle
7534 * optimization: improved performance of BIT and SBIT on bit-vectors.
7535 * .fasl file incompatibility: The fasl file version number has
7536 been incremented because of changes associated with package locks.
7538 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
7539 * minor incompatible change: the system no longer provides
7540 optimization hints (conditions which are TYPEP
7541 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
7542 mode; these hints are still emitted when higher SPEED optimization
7544 * new contrib module: a sampling profiler (profiling by statistical
7545 sampling, rather than by instrumenting functions) is available as
7546 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
7547 * the behaviour of the standard function ED is now customizeable by
7548 third parties through a hook variable: see ED's documentation
7549 string for information on the protocol.
7550 * the compiler no longer emits efficiency notes for (FUNCALL X)
7551 when the type of X is uncertain under default optimization
7553 * fixed bug 276: mutating a binding of a specialized parameter to a
7554 method to something that is not TYPEP the specializer is now
7556 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
7557 exhibit the required behaviour on the x86 platform. (thanks to
7558 Peter van Eynde, Eric Marsden and Bruno Haible)
7559 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
7560 even for difficult arguments. (reported by Peter Graves)
7561 * fixed bug 141a: the backquote printer now descends quoted
7563 * fixed another bug in backquote printing: no more destructive
7564 modification of the form's list structure. (reported by Brian
7566 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
7567 move between its address being taken and the call to
7568 interrupt_thread, fixing a crashing race condition.
7569 * the SB-POSIX contrib implementation has been adjusted so that it
7570 no longer exhibits ridiculously poor performance when constructing
7571 instances corresponding to C structs.
7573 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
7574 * minor incompatible change: the sb-grovel contrib now treats C
7575 structures as alien (in the sense of SB-ALIEN) objects rather than
7576 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
7577 has implications for memory management of client code
7578 (sb-grovel-returned objects must now be manually managed) and for
7579 type safety (alien objects now have full types).
7580 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
7581 used to control emission of compiler diagnostics, rather than the
7582 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
7583 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
7584 quality should be considered deprecated.
7585 * install.sh now installs the user manual as well
7586 * (not quite a new documentable feature, but worth considering in
7587 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
7588 beginnings of a semantically meaningful condition hierarchy is
7589 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
7591 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
7592 designator as the defaults argument.
7593 * fixed bug: Displaced arrays whose displaced-to array has become
7594 too small now cause ARRAY-DIMENSION to signal an error, providing
7595 for safer bounds-checking. (reported by Bruno Haible)
7596 * fixed bug: DEFCLASS slot definitions with identical :READER and
7597 :WRITER names now signal a reasonable error. (reported by Thomas
7599 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
7601 * fixed bug: Invalid slot specification errors now print correctly.
7602 (thanks to Zach Beane)
7603 * fixed bug 320: Shared to local slot value transfers in class
7604 redefinitions now happen corrently from superclasses as
7605 well. (reported by Bruno Haible)
7606 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
7608 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
7609 improper lists correctly. (reported by Bruno Haible)
7610 * fixed bug 313: source-transform for <fun-name> was erroneously
7611 applied to a call of a value of a variable with name <fun-name>.
7612 (reported by Antonio Menezes Leitao)
7613 * fixed bug 307: The obsolete instance protocol ensures that
7614 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
7615 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
7616 remove dead unknown-values globs from the middle of the stack.
7617 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
7618 easier to resume long computations after using *BREAK-ON-SIGNALS*
7619 to diagnose and fix failures. (thanks to Nikodemus Siivola)
7620 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
7621 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
7622 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
7623 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
7624 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
7626 * fixed a (fairly theoretical) bug in string printing: if
7627 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
7628 does not have array-element-type equal to the most general string
7630 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
7631 function name. (thanks to Nikodemus Siivola)
7632 * fixed bug: compile-time format string checker failed on
7633 non-closed ~{. (reported by Thomas F Burdick)
7634 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
7635 don't warn on legal loop code involving more than one aggregate
7636 boolean. (thanks to Nikodemus Siivola)
7637 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
7638 in keyword position to MAKE-PACKAGE was not being reported as
7640 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
7641 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
7643 * fixed bugs 280 and 312: the checking for multiple definitions in a
7644 file is less likely to become confused by uses of inline
7646 * fixed bug: the #S reader macro performs the keyword coercion
7647 specified for slot names. (reported by Kalle Niemitalo)
7648 * fixed bug: lambda lists may contain symbols whose names start with
7649 & but are not lambda-list-keywords; their occurrence triggers a
7651 * fixed bug 321: define-method-combination argument lambda lists do
7652 not cause invalid code to be generated when &optional or &aux
7653 variables have default values. (reported by Bruno Haible)
7654 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
7655 have CLOS classes; this appears also to have fixed reported
7656 instability in stack exhaustion detection.
7657 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
7658 MUFFLE-WARNING when no associated restart is present is now
7660 * optimization: rearranged the expansion of various defining macros
7661 so that each expands into only one top-level form in a
7662 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
7664 * optimization: used a previously little-used slot in symbols to
7665 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
7667 * fixed some bugs revealed by Paul Dietz' test suite:
7668 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
7670 ** Fixed an optimization bug related to inheritance of initforms
7671 from local to shared slots.
7672 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
7673 ** CAST optimizer forgot to flush argument derived type.
7674 ** print/read consistency on floats is now orders of magnitude
7675 more likely. (thanks also to Bruno Haible for a similar report
7677 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
7678 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
7679 for objects of type REAL. Make it so.
7680 ** SXHASH is specified (infelicitously) to respect similarity,
7681 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
7682 it so. (thanks to Markus Ziegler)
7683 ** on the Alpha, the compiler succeeds in compiling functions
7684 returning a known number of arguments greater than 63.
7685 ** fixed handling of invalid NIL arguments in keyword position
7687 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
7689 ** provided a readably-printable representation for RANDOM-STATE
7691 ** ensured that pathnames, where they have a namestring, always
7692 print using #P"..." syntax.
7694 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
7695 * Support for the forthcoming 2.0 version of the NetBSD kernel
7696 running on x86 hardware has been added. (thanks to Perry
7697 E. Metzger most immediately, and others for their past work)
7698 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
7699 current release version; SBCL's OpenBSD support had been broken
7700 since about the time of OpenBSD's switch to ELF binary format.)
7701 * [placeholder for DX summary]
7702 ** user code with &REST lists declared dynamic-extent, under high
7703 speed or space and low safety and debug optimization policy.
7704 * The manual has been converted to Texinfo format and the debugger
7705 chapter from the cmucl manual has been added.
7706 * A facility has been added to extract documentation strings from
7707 sbcl and store them as Texinfo-formatted snippets for inclusion in
7708 the manual (via Texinfo's @include directive)
7709 * bug fix: compiler emitted division in optimized DEREF. (thanks for
7710 the test case to Dave Roberts)
7711 * bug fix: multidimensional simple arrays loaded from FASLs had fill
7712 pointers. (reported by Sean Ross)
7713 * bug fix: PROFILE output is printed nicely even for large numerical
7714 values. (thanks to Zach Beane)
7715 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
7716 greater than 32 handle EOF correctly.
7717 * bug fix: on X86 an immediate argument of the IMUL instruction is
7718 correctly printed in disassembly. (thanks to Lutz Euler)
7719 * bug fix: class slots in redefined classes preserve their old
7720 values. (thanks to Bruno Haible and Nikodemus Siivola)
7721 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
7722 succeeds. (reported by Marco Baringer)
7723 * fixed some bugs revealed by Paul Dietz' test suite:
7724 ** READ-SEQUENCE now works on ECHO-STREAMs.
7725 ** RATIONALIZE works more according to its specification. (thanks
7728 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
7729 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
7730 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
7731 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
7732 should matter to you only if you rebind the printer control
7733 variables and then find you want different bindings in the
7734 debugger than in the ordinary execution of your program.)
7735 * The runtime build system has been tweaked to support building
7736 (on SPARC/SunOS) using a C compiler which invokes Sun's own
7737 assembler and linker. (thanks to Nikodemus Siivola)
7738 * Unbound, undefined, undeclared variables now trigger full
7739 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
7740 more often programmer error than deliberate exploitation of undefined
7742 * optimization: the hash algorithm for strings has changed to one
7743 that is less vulnerable to spurious collisions. (thanks to Juho
7745 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
7746 needless bounds checking. (thanks to Juho Snellman)
7747 * optimization: implemented multiplication as a modular
7748 (UNSIGNED-BYTE 32) operation on the PPC backend.
7749 * fixed some bugs revealed by Paul Dietz' test suite:
7750 ** ADJUST-ARRAY now copies the datum in a zero rank array if
7752 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
7753 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
7754 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
7756 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
7758 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
7760 ** ECHO-STREAMs no longer attempt to echo the end of file value to
7761 their output stream on EOF from read.
7762 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
7763 have been read to end-of-file.
7764 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
7766 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
7767 description of determination of which consecutive characters
7769 ** Printing the "Space" character with escaping on now yields "#\\ ",
7770 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
7771 ** Reading floating-point numbers with *READ-BASE* set to a number
7772 less than 10 works correctly.
7773 ** Reading floating-point numbers with *READ-BASE* set to a number
7774 more than 10 works correctly.
7775 ** Printing with *PRINT-READABLY* targets the standard readtable, not
7776 the readtable currently in effect.
7778 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
7779 * minor incompatible change: parsing of namestrings on a physical
7780 (Unix) host has changed; numbers after the final #\. in a
7781 namestring are no longer interpreted as a version field. This is
7782 intented to be largely invisible to the user, except that the
7783 meaning of the namestring "*.*.*" has changed: it now refers to a
7784 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
7785 should usually be replaced by
7786 (make-pathname :name :wild :type :wild :version :wild)
7787 with the added benefit that this is more likely to be portable.
7788 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
7789 option to OPEN now signals an error if the file being opened
7790 exists; this may have an impact on existing code.
7791 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
7792 signals received, on the PowerPC platforms (both Linux and
7793 Darwin). (thanks to Pierre Mai for pointing out the location of
7795 * several fixes on OS X: The system now builds and runs cleanly on
7796 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
7797 (thanks to Brian Mastenbrook)
7798 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
7799 second-resolution: integer multiples of 1/3600 between -24 and 24.
7800 (thanks to Vincent Arkesteijn)
7801 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
7802 type when called with 1 argument; PEEK-CHAR checked type of
7803 PEEK-TYPE only after having read first character from a
7804 stream. (reported by Peter Graves)
7805 * bug fix: the garbage collector now has much better locality
7806 behaviour, and in particular no longer treats all memory as being
7807 exhausted when many small objects point to each other in a deeply
7809 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
7810 recognized as being TYPEP their class.
7811 * bug fix: the PUSHNEW documentation string has been corrected.
7812 (thanks to Vincent Arkesteijn)
7813 * bug fix: defaulting of the value for the last of an atypically
7814 large number of multiple values being bound was not being
7815 performed correctly on the Alpha or PPC platforms
7816 * optimization: implemented multiplication as a modular
7817 (UNSIGNED-BYTE 32) operation on the x86 backend.
7818 * optimization: SEARCH on simple-base-strings can now be open-coded.
7819 (see also contrib/compiler-extras.lisp for inspiration for
7820 teaching the compiler about the Boyer-Moore algorithm).
7821 * value, returned by MAX (and MIN) called with several EQUALP, but
7822 not EQL, arguments now does not depend on compiler settings.
7823 * fixed some bugs revealed by Paul Dietz' test suite:
7824 ** in stack analysis liveness information is propagated from
7825 non-local entry points.
7826 ** pathwise CAST removing failed when the CAST node did not start
7828 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
7829 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
7831 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
7832 host is already defined.
7833 ** RENAME-FILE works on streams instead of signalling an internal
7835 ** PEEK-CHAR uses the current readtable when determining whether
7836 or not a character is whitespace.
7837 ** MERGE-PATHNAMES handles the case when the pathname does not
7838 specify a name while the default-pathname specifies a version.
7839 ** Pathnames now stand a better chance of respecting print/read
7841 ** Attempting to use standardized file system operators with a
7842 pathname with invalid :DIRECTORY components signals a
7844 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
7846 ** DIRECTORY on logical pathnames is more correct.
7847 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
7848 signal a TYPE-ERROR if their argument is not a stream.
7849 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
7850 designator argument does not designate a stream.
7851 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
7852 examining the synonym.
7853 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
7855 ** OPEN and WITH-OPEN-STREAM allow opening streams with
7856 element-type larger than ([UN]SIGNED-BYTE 32).
7858 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
7859 * When built with the :SB-FUTEX feature, threaded builds now take
7860 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
7861 for faster/more reliable mutex and condition variable support.
7862 * Incompatible change (but one you probably shouldn't have been using
7863 anyway): the interface and code for arbitrating between multiple
7864 threads in the same user session has been redesigned.
7865 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
7866 error when called without an explicit environment argument.
7867 (thanks to Nikodemus Siivola)
7868 * bug fix: buffered :DIRECTION :IO streams are less likely to become
7869 confused about their position. (thanks to Adam Warner and Gerd
7871 * bug fix: Pretty printing backquoted forms with unquotations in the
7872 argument list position of various code constructs such as LAMBDA
7873 now works correctly. (reported by Paul Dietz)
7874 * bug fix: Pretty printing unquotations no longer loses all
7875 stream position information.
7876 * optimization: performance of string output streams is now less
7877 poor for multiple small sequence writes.
7878 * optimization: performance of CSUBTYPEP in the presence of complex
7879 expressions involving CONS and NOT many times has been improved.
7880 (reported by Paul Dietz)
7881 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
7883 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
7884 streams for the REPL, for the debugger, and so on. (thanks to
7886 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
7887 * fixed some bugs revealed by Paul Dietz' test suite:
7888 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
7889 is ignored if it is too small, rather than propagating through
7890 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
7891 ** extremely complex negations of CONS types were not being
7892 sufficiently canonicalized, leading to inconsistencies in
7894 ** VALUES tranformer lost derived type.
7896 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
7897 * fixed a bootstrapping bug: the build process no longer assumes
7898 that the various BOOLE-related constants have the same value in
7899 host and target lisps. (noted by Paul Dietz' test suite on an
7900 SBCL binary built from CLISP)
7901 * The system can now be dynamically linked on the MIPS platform,
7902 which enables dynamic loading of foreign code from Lisp. (thanks
7903 to Ralf Baechle for discussions on the MIPS ABI)
7904 * The system now records debugging information for its own source
7905 files in a filesystem-position-independent manner, relative to
7906 the "SYS" logical host.
7907 * fixed a compiler bug: MV-LET convertion did not check references
7908 to the "max args" entry point. (reported by Brian Downing)
7909 * tweaked disassembly notes to be less confident about proclaiming
7910 some instruction as an LRA. (thanks to Brian Downing)
7911 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
7912 now each have their own history, command character, and other
7913 characteristics. (thanks to David Lichteblau)
7914 * fixed some bugs revealed by Paul Dietz' test suite:
7915 ** compiler failure in compiling LOGAND expressions including a
7917 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
7918 shift greater than 32.
7919 ** FLUSH-DEST did not mark blocks for type check regeneration.
7920 ** HANDLER-CASE failed to accept declarations in handler clauses
7921 in some circumstances.
7923 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
7924 * New code in contrib/sb-introspect (still probably not entirely
7925 stable yet) provides some support for smart Lisp development
7926 environments like SLIME.
7927 * The conditions signalled for errors occurring when loading .fasl
7928 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
7929 in a way which should help ASDF recover gracefully.
7930 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
7931 stuff has been cleaned up. If you code contrib/ stuff, this might
7932 affect you, and you can look at contrib/README, contrib/STANDARDS,
7933 and/or the 0.8.4.27 diff to check.
7934 * In full calls the compiler now does not generate checks for declared
7935 argument types for all arguments.
7936 * various threading fixes
7937 ** and some experimental patches which didn't make it into
7938 the main tree for this release, but which are shipped in
7939 contrib/experimental-thread.patch as a possible fix for some
7940 failures (deadlock, spinning...) in GC-intensive multithreaded
7942 * fixed PPC build problem (source code incompatibility of different
7943 library versions): added offsetof() hackery which attempts to divine
7944 where glibc maintainers put uc_mcontext today
7945 * fixed bug 282: compiler does not trust type assertions while passing
7946 arguments to a full call.
7947 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
7948 &OPTIONAL VALUES type parameter.
7949 * fix bug 214: algorithm for noting rejected templates is now more
7950 similar to that of template seletion. (also reported by rydis on
7952 * fixed bug 141b: printing backquoted information readably and prettily
7953 inserts a space where necessary.
7954 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
7955 (CHARACTER 10) are now reported as errors, rather than propagated
7956 as unknown types. (reported by piso on #lisp)
7957 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
7958 with values NIL and :ERROR. (thanks to Milan Zamazal)
7959 * fixed bug 191c: CLOS now does proper keyword argument checking as
7960 described in CLHS 7.6.5 and 7.6.5.1.
7961 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
7962 longer raise an error; further, using a list as a for-as-arithmetic
7963 counter now raises a meaningful error.
7964 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
7965 now understood by sequence creation functions such as MAKE-SEQUENCE
7967 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
7968 a STRING-INPUT-STREAM.
7969 * compiler enhancement: SIGNUM is now better able to derive the type
7971 * type declarations inside WITH-SLOTS are checked. (reported by
7973 * fixed some bugs revealed by Paul Dietz' test suite:
7974 ** incorrect optimization of TRUNCATE for a positive first
7975 argument and negative second.
7976 ** compiler failure in let-convertion during flushing dead code.
7977 ** compiler failure while deriving type of TRUNCATE on an
7978 interval, containing 0.
7979 ** ASH of a negative bignum by a negative bignum count now returns
7981 ** intersection of CONS types now canonicalizes properly, fixing
7982 inconsistencies in SUBTYPEP.
7984 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
7985 * incompatible change: The --disable-debugger command line
7986 option now clobbers the debugger at a more fundamental
7987 level, by redefining #'INVOKE-DEBUGGER instead of by
7988 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
7989 is specified by ANSI to ignore *DEBUGGER-HOOK* and
7990 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
7991 enter the debugger REPL and then suffer recursive errors
7992 because *DEBUG-IO* is also messed up in --disable-debugger mode;
7993 while under the new system, BREAK in --disable-debugger mode
7994 terminates the system just as an unhandled error would.
7995 * fixed compiler performance when processing loops with a step >1;
7996 * bug fix: DOCUMENTATION now retrieves generic function
7997 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
7998 support has been systematized, and now supports the methods
7999 specified by ANSI, along with a default method and a method for
8000 slot documentation. (reported by Nathan Froyd)
8001 * bug fix: effective methods associated with a generic function are
8002 no longer cached over a change of that generic function's method
8003 combination. (reported by Andreas Fuchs)
8004 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
8005 names a non-existent directory. (thanks to Andreas Fuchs)
8006 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
8007 the PPC platform, lead to stack corruption; this has been fixed.
8008 (reported by Rainer Joswig)
8009 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
8010 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
8011 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
8012 arithmetic in general, is now much more reliable on the PPC
8014 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
8015 platform now returns the right answer.
8016 * optimization: restored some effective method precomputation in
8017 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
8018 precomputation is now tunable.
8019 * optimization: compiler-internal data structure use has been
8020 reviewed, and changes have been made that should improve the
8021 performance of the compiler by about 20%.
8022 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
8023 simple-base-strings and simple-bit-vectors is improved.
8024 * optimization: the optimization of 32-bit logical and arithmetic
8025 functions introduced in version 0.8.3 on the x86 has been
8026 implemented on the mips, ppc and sparc platforms; an
8027 implementation of the same facility, but for 64-bit arithmetic,
8028 has been added for the alpha.
8029 * microoptimization: the compiler is better able to make use of the
8030 x86 LEA instruction for multiplication by constants.
8031 * bug fix: in some situations compiler did not report usage of
8032 generic arithmetic in (SPEED 3) policy.
8033 * bug 145b fix: compiler used wrong type specifier while converting
8034 MEMBER-types to numeric.
8035 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
8037 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
8038 index argument now works properly on the Alpha platform.
8039 * bug fix: floating point exception treatment on the Alpha platform
8041 * bug fix: FILE-POSITION works much better on string input and
8042 output streams. (thanks to Nikodemus Siivola)
8043 * bug fix: many threading/garbage collection symptoms sorted.
8044 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
8045 might be pseudo-atomic.
8046 * internal change: Stopping for GC is now done with signals not
8047 ptrace. GC is now done in whichever thread wanted it, instead of
8049 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
8051 * bug fix: result form in DO is not contained in the implicit
8053 * incompatible change: ICR structure is changed; the value part of
8054 CONTINUATION is now called LVAR; corresponding functions are
8055 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
8056 * added type deriver for ISQRT (thanks to Robert E. Brown).
8057 * bug fix: better support for loading from the command line when an
8058 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
8060 * fixed some bugs revealed by Paul Dietz' test suite:
8061 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
8062 ** ROUND and FROUND now give the right answer when given very
8063 small float arguments.
8064 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
8066 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
8067 ** (GCD 0 <negative-integer>) returned <negative-integer>.
8068 ** LCM should return a non-negative integer.
8069 ** PARSE-INTEGER returned the index of a terminator instead of the
8070 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
8071 ** PARSE-INTEGER returned an incorrect index being applied to a
8073 ** LCM with two arguments of 0 returns 0 rather than signalling
8075 ** unsigned addition of a 32-bit constant with the high bit set no
8076 longer causes an internal compiler error on the x86.
8077 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
8078 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
8079 with negative last argument.
8080 ** byte specifiers with zero size and position no longer cause
8081 an error during type derivation.
8082 ** bignum multiplication on the Alpha platform now returns the
8084 * porting: The system now builds on SuSE AMD64, although it still
8085 generates a 32-bit binary.
8086 * .fasl file incompatibility: The fasl file version number has
8087 been incremented (because of the changes to internal compiler
8088 data structures referred to above).
8090 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
8091 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
8092 more accurately, on the Darwin kernel running on PowerPC hardware.
8093 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
8094 * Compiler code deletion notes now signal a condition of type
8095 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
8096 an associated MUFFLE-WARNING restart.
8097 * The compiler now performs limited argument count validation of
8098 constant format strings in FORMAT, and where appropriate in ERROR,
8099 CERROR and WARN. (thanks to Gerd Moellmann)
8100 * New ASDF-INSTALL contrib can be used for automatic download and
8101 installation of third-party Lisp code from CCLAN or other sites
8103 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
8104 which forces another thread to execute a function supplied by the
8106 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
8107 now accept and act upon their :ELEMENT-TYPE keyword argument.
8108 (reported by Martin Atzmueller, Edi Weitz)
8109 * bug fix: FILE-POSITION now accepts position designators up to
8110 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
8111 is the greater. (thanks to Patrik Nordebo)
8112 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
8113 Kalle Olavi Niemitalo)
8114 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
8115 printable. (reported by Eric Marsden)
8116 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
8117 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
8118 * x86 bug fix in control stack exhaustion checking: now shows backtrace
8119 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
8120 (thanks to Stig Sandoe)
8121 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
8122 UNREAD-CHAR now correctly includes the unread character in the
8123 target sequence. (thanks to Gerd Moellmann)
8124 * bug fix in threaded builds: the system can now be suspended and
8125 resumed by shell job control with minimal disruption.
8126 * bug fixes in times and timezones >2038AD
8127 * better handling of "where is GNU make?" problem in build scripts
8128 (thanks to Nikodemus Siivola)
8129 * new optimization: inside a named function any reference to a
8130 function with the same name is considered to be a self-reference;
8131 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
8132 optimization quality.
8133 * new optimization on x86: logical functions and + now have
8134 optimized (UNSIGNED-BYTE 32) versions, which are automatically
8135 used when the result is truncated to 32 bits.
8136 * VALUES declaration is partially enabled.
8137 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
8138 * fixed some bugs revealed by Paul Dietz' test suite:
8139 ** The system now obeys the constraint imposed by
8140 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
8141 types form a lattice under type intersection.
8142 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
8143 ** ASSOC now ignores NIL elements in an alist.
8144 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
8145 and (1+ MOST-POSITIVE-FIXNUM) answers.
8146 ** The addition of a method with invalid qualifiers to a generic
8147 function does not cause an error to be signalled immediately;
8148 a warning is signalled, and the error is generated only on
8149 calling the generic function.
8150 * changed .fasl file version number, in part to add type codes for
8151 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
8152 obscure ANSI requirements
8154 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
8155 * fixed bug 148: failure to inline-expand a local function left
8156 garbage, confusing the compiler.
8157 * fixed bugs 3cd: structure slot readers perform type check if the
8158 slot can have an invalid value (i.e. it is either not initialized
8159 or can be written with a less specific slot writer).
8160 * bug fix: the compiler now traps array references to elements off
8161 the end of an array; previously, the bounds checking in some
8162 circumstances could go off-by-one.
8163 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
8165 * type declarations for array element types now obey the description
8166 on the CLHS page "Declaration TYPE", as per discussions on
8167 sbcl-help around 2003-05-08. This means that a declaration
8168 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
8169 declaration, all references to BAR will be asserted or assumed
8170 (with THE, so dependent on compiler policy) to involve objects of
8171 type FOO. Note that no such declaration is implied in
8172 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
8173 * declared types of functions from the "Conditions"
8174 chapter. (reported by Paul Dietz)
8175 * bug fix: CERROR accepts a function as its first argument.
8176 * bug fix: NTH an NTHCDR accept a bignum as index
8177 arguments. (reported by Adam Warner)
8178 * optimization: character compare routines now optimize comparing
8179 against a constant character. (reported by Gilbert Baumann)
8180 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
8181 argument now works properly on the MIPS platform.
8182 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
8183 * repeated evaluation of the same DEFSTRUCT, a slot of which is
8184 declared to have a functional type, does not cause an error
8186 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
8187 many :DEFAULT-INITARGS. (reported by Istvan Marko)
8188 * fixed bug: if last continuation of a deleted block has a
8189 destination, this destination should be deleted too. (reported by
8191 * fixed a bug in the bootstrap process: the host compiler's values
8192 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
8193 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
8194 test case from Patrik Nordebo)
8195 * improved the ability of the disassembler on the PPC platform to
8196 provide helpful disassembly notes.
8197 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
8198 the class in more cases than previously.
8199 * bug fix: FILE-POSITION now understands :START and :END for
8200 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
8201 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
8202 8) data. (thanks to David Lichteblau)
8203 * bug fix: it is possible to add a method to a generic function
8204 without lambda list.
8205 * bug fix: reader failed to signal END-OF-FILE inside an
8206 object representation. (reported by Nikodemus Siivola)
8207 * fixed some bugs revealed by Paul Dietz' test suite:
8208 ** LAST and [N]BUTLAST should accept a bignum.
8209 ** condition slot accessors are methods.
8210 ** (VECTOR NIL) is a subtype of STRING.
8212 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
8213 * minor incompatible change: some nonsensical specialized lambda
8214 lists (used in DEFMETHOD) which were previously ignored now signal
8216 * minor incompatible change: the system is now aware of the types of
8217 variables in the COMMON-LISP package, and will signal errors for
8218 most violations of these type constraints (where previously they
8219 were silently accepted).
8220 * minor incompatible change: COMPILE-FILE now uses the freedom
8221 afforded (ANSI 3.2.2.3) to use derived function types for
8222 functions defined in the same file. This also permits the system
8223 to warn on static type mismatches and function
8224 redefinition. (Currently it does not work with high DEBUG level.)
8225 * minor incompatible change: VALUES declaration is disabled.
8226 * When issuing notes, the compiler now signals a condition of type
8227 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
8228 restart for use in user handlers. It is expected that the
8229 COMPILER-NOTE condition will eventually become a condition
8230 supertype to a hierarchy of note types, which will then be
8231 handleable in a similar fashion. However, at the moment, no such
8232 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
8233 but it's an implementation detail, not a classification for the
8235 * Changes in type checking closed the following bugs:
8236 ** type checking of unused values (192b, 194d, 203);
8237 ** template selection based on unsafe type assertions (192c, 236);
8238 ** type checking in branches (194bc).
8239 * A short form of VALUES type specifier has ANSI meaning (it has
8240 increased the number of situations when SBCL cannot perform type
8242 * fixed bug in DEFSTRUCT: once again, naming structure slots with
8243 keywords or constants is permissible.
8244 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
8245 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
8246 classes. (thanks to Antonio Martinez)
8247 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
8248 outputs FRESH-LINE or TERPRI, and no longer converts its stream
8249 argument to a pretty-print stream. Instead, it leaves any such
8250 operations to DESCRIBE-OBJECT methods.
8251 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
8253 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
8254 lambda lists. (thanks to David Lichteblau)
8255 * bug fix: Defining a generic function with a :METHOD-CLASS being a
8256 subclass of STANDARD-METHOD no longer causes stack exhaustion.
8257 (thanks to Gerd Moellmann)
8258 * fixed bug 246: increased compilation speed of long
8259 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
8261 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
8263 * DEFCONSTANT now throws a condition of type
8264 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
8265 constant to a non-EQL value; CONTINUE and ABORT restarts
8266 respectively change and preserve the value.
8267 * fixed bug 63: The code walker, part of the implementation of CLOS,
8268 is now better at handling symbol macros.
8269 * bug fix: There is no longer an internal implementation type named
8270 CL:LENGTH. (reported by Raymond Toy)
8271 * bug fix: In macro-like defining macros/special operators the
8272 implicit block does not enclose the lambda list.
8273 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
8274 enclosed in parentheses) are not suitable as type specifiers, and
8275 their use properly signals an error now.
8276 * bug fix: An argument count mismatch for a type specifier in code
8277 being compiled no longer causes an unhandled error at compile
8278 time, but signals a compile-time warning.
8279 * fixed simple vector readable printing
8280 * bug fix: DESCRIBE takes more care over whether the class
8281 precedence list slot of a class is bound before accessing it.
8282 (reported by Markus Krummenacker)
8283 * bug fix: FORMATTER can successfully compile pretty-printer format
8284 strings which use variants of the ~* directive inside.
8285 * bug fix: SEARCH now applies its TEST predicate to the elements of
8286 the arguments in the correct order. (thanks to Wolfhard Buss)
8287 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
8288 in type inference. (thanks to Robert E. Brown)
8289 * bug fix: Reading in symbols with an explicit package name of ""
8290 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
8291 * fixed some bugs revealed by Paul Dietz' test suite:
8292 ** NIL is now allowed as a structure slot name.
8293 ** Arbitrary numbers, not just REALs, are allowed in certain
8294 circumstances in LOOP for-as-arithmetic clauses.
8295 ** Multiple class redefinitions before slot access no longer
8296 causes a type error.
8297 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
8298 association between the name and a class.
8299 ** Generic functions with non-standard method-combination and over
8300 five methods all of which return constants no longer return NIL
8301 after the first few invocations. (thanks to Gerd Moellmann)
8302 ** CALL-NEXT-METHOD with no arguments now passes the original
8303 values of the arguments, even in the presence of assignment.
8304 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
8306 ** DISASSEMBLE works with closures and funcallable instances.
8307 ** ADD-METHOD now returns the generic function, not the new method.
8308 ** FIND-METHOD signals an error if the lengths of the specializers
8309 is incompatible with the generic function, even if the ERRORP
8311 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
8312 which its argument is a member.
8313 ** DEFCLASS only redefines the class named by its class-name
8314 argument if that name is the proper name of the class;
8315 otherwise, it creates a new class.
8316 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
8317 of the UNBOUND-SLOT condition to the name of the slot.
8318 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
8319 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
8320 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
8321 SLOT-MAKUNBOUND in the specified fashion.
8323 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
8324 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
8325 cross-compilation host. As a consequence, we can now bootstrap our
8326 way up to SBCL starting with a bare gcc toolchain and human-readable
8327 source code (first the source to CLISP, then the source to SBCL).
8328 * A contributed module containing a partial implementation of the
8329 simple-streams interface has been included. (thanks to Rudi
8331 * A contributed module implementing the RFC1321 Message Digest
8332 Algorithm, known as MD5, has been included.
8333 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
8334 no longer has any effect, as the code controlled by this feature
8335 has been deleted. (As far as we know, no-one has ever built using
8336 this feature, and its semantics were confused in any case).
8337 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
8338 work on conditions (as required by the ANSI specification),
8339 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
8340 expected behaviour on conditions. Users should note, however,
8341 that such behaviour is not required by the ANSI specification,
8342 and so use of this behaviour may render their code unportable.
8343 * fixed some bugs revealed by Paul Dietz' test suite:
8344 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
8346 ** &ENVIRONMENT parameter in macro lambda list is bound first.
8347 ** SXHASH on condition objects no longer returns NIL.
8348 ** :ALLOCATION :CLASS slots are better treated; their values are
8349 updated on class redefinition, and initforms inherited from
8350 superclasses are applied.
8351 ** REMOVE-METHOD returns its generic function argument even when
8352 no method was removed.
8353 ** SHARED-INITIALIZE now initializes the values of the requested
8354 slots, including those with :ALLOCATION :CLASS.
8355 ** ALLOCATE-INSTANCE now works on structure classes defined via
8356 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
8358 ** SLOT-EXISTS-P now works on conditions, as well as structures
8360 ** MAKE-LOAD-FORM now has the required methods on
8361 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
8362 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
8363 keyword, and now implements the SLOT-NAMES argument.
8364 ** methods with &OPTIONAL arguments no longer allow too many
8365 arguments to be passed in the call without error.
8366 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
8367 option is consistent with the required arguments of the generic
8368 function lambda list.
8369 * bug fix: REQUIRE accepts a string designator. (Thanks to
8371 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
8372 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
8373 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
8374 * bug fix: The compiler now checks for duplicated variables in macro
8376 * bug fix: SETQ on globals returns the correct value.
8377 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
8378 not a COMPILER-ERROR (followed by some other strange error on
8379 choosing the CONTINUE restart).
8380 * bug fix: make.sh and friends are now more consistent in the way that
8381 they look for GNU "make".
8383 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
8384 * experimental native threads support (on x86 Linux >=2.4 only).
8385 This is not compiled in by default: you need to add :SB-THREAD to
8386 the target features. See the "Beyond ANSI" chapter of the manual
8388 * fix for longstanding nonANSIism: The old distinction between
8389 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
8390 The return value from CL:FIND-CLASS is now a CLOS class, and
8391 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
8392 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
8393 * An interface to the MetaObject Protocol, as described in Kiczales,
8394 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
8395 MIT Press, 1991, is available from the SB-MOP package.
8396 * incompatible change: the SB-PCL package should now be considered
8397 a private implementation detail, and no longer a semi-private MOP
8399 * minor incompatible change: due to rearrangement for threads, the
8400 control stack and binding stack are now allocated at arbitrary
8401 addresses instead of being hardcoded per-port. Users affected by
8402 this probably have to be doing advanced things with shared
8403 libraries, and will know who they are.
8404 * minor incompatible change: Previously, all --eval forms used were
8405 processed with READ before any of them were processed with EVAL.
8406 Now each --eval form is processed with both READ and EVAL before
8407 the next --eval form is processed. (Thus package operations like
8408 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
8409 work as the user might reasonably expect.)
8410 * minor incompatible change: *STANDARD-INPUT* is now only an
8411 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
8413 * minor incompatible change: Y-OR-N-P is now character-oriented,
8414 not line oriented. Also, YES-OR-NO-P now works without errors.
8415 (thanks to Antonio Martinez)
8416 * sb-aclrepl module improvements: an integrated inspector, added
8417 repl features, and a bug fix to :trace command.
8418 * Known functions, which cannot be open coded by the backend, are
8419 considered to be able to check types of their arguments. (fixing
8420 a bug report by Nathan J. Froyd)
8421 * fixed a bug in computing method discriminating functions: It is
8422 now possible to define methods specialized on classes which have
8423 forward-referenced superclasses. (thanks to Gerd Moellmann)
8424 * fixed evaluation order in optional entries (reported by Gilbert
8426 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
8427 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
8428 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
8429 required-by-AMOP NAME argument, as well as CLASS and
8430 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
8431 * fixed bug 20: DEFMETHOD can define methods using names that are
8432 not the proper names of classes to designate class specializers.
8433 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
8434 Unix file descriptors, instead of blowing up. (thanks to Antonio
8436 * Garbage collection refactoring: user-visible change is that a
8437 call to the GC function during WITHOUT-GCING will not do garbage
8438 collection until the end of the WITHOUT-GCING. If you were doing
8439 this you were probably losing anyway.
8440 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
8441 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
8442 TYPEP the latter but not the former.
8443 * The compiler issues a full WARNING for calls to undefined functions
8444 with names from the CL package.
8445 * MAP-INTO for a vector destination is open coded. (reported by
8446 Brian Downing on c.l.l)
8447 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
8448 documentation string.
8449 * fixed some bugs revealed by Paul Dietz' test suite:
8450 ** COPY-ALIST now signals an error if its argument is a dotted
8452 ** Condition slots are now accessed more correctly in the presence
8453 of multiple initargs for a given slot.
8454 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
8455 exclude restarts of the same name associated with a different
8457 ** DEFCLASS of forward-referenced classes with another
8458 forward-referenced class in the superclasses list no longer
8460 ** Condition slots are now initialized once each, not multiple
8461 times. (thanks to Gerd Moellmann)
8462 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
8464 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
8465 ** NSET-EXCLUSIVE-OR does not return extra elements when its
8466 arguments contain duplicated elements.
8467 ** RESTART-CASE understands local macros.
8468 ** RESTART-CASE associates exactly its own restarts with a condition.
8469 ** ENDP in safe mode checks its argument to be of type LIST.
8470 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
8471 in question is unbound.
8472 ** Optimized MAKE-INSTANCE functions no longer cause internal
8473 assertion failures in the presence of duplicate initargs.
8474 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
8475 ** Side-effectful :DEFAULT-INITARGS have their side-effects
8476 propagated even in the ctor optimized implementation of
8478 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
8480 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
8481 * a better implementation of SXHASH on (simple) bit vectors,
8482 measured both in execution speed and in distribution of results
8483 over the positive fixnums, has been installed. Likewise, a better
8484 implementation of EQUAL for simple bit vectors is now available.
8485 * fixed CEILING optimization for a divisor of form 2^k.
8486 * fixed bug 240 (emitting extra style warnings "using the lexical
8487 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
8488 by Antonio Martinez)
8489 * fixed SXHASH, giving different results for NIL depending on type
8490 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
8491 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
8492 variable. (found by Rolf Wester)
8493 * SBCL does not ignore type declarations for special
8494 variables. (reported by rif on c.l.l 2003-03-05)
8495 * some bug fixes in contrib/sb-aclrepl/
8496 * fixed some bugs revealed by Paul Dietz' test suite:
8497 ** a bug in the CONS type specifier, whereby the CAR and CDR
8498 types got intertwined, has been fixed;
8499 ** the type system is now able to reason about the interaction
8500 between INTEGER and RATIO types more completely;
8501 ** APPEND, [N]REVERSE and NRECONC check that those their
8502 arguments, which must be proper lists, are really so;
8503 ** An array specialized to be unable to hold elements has been
8504 implemented, as required -- yes, really -- by ANSI;
8505 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
8506 on malformed property lists;
8508 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
8509 * incompatible packaging change: in line with Unix convention,
8510 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
8511 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
8512 * REQUIRE and PROVIDE are now optionally capable of doing something
8513 useful. See the documentation string for REQUIRE.
8514 * infrastructure for a managed SBCL contrib system: contributed
8515 modules in this release include:
8516 ** the ASDF system definition facility;
8517 ** an interface to the BSD Sockets API;
8518 ** an ACL-like convenience interface to the repl;
8519 (thanks to Kevin Rosenberg)
8520 ** an implementation of ROTATE-BYTE, with efficient implementation
8522 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
8523 gives a closer approximation to the right answer than previously.
8524 (thanks to Raymond Toy)
8525 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
8526 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
8527 optional environment arguments, as required by ANSI.
8528 * fixed bugs in other functions taking environment objects, allowing
8529 calls with an explicit NIL environment argument to be compiled
8531 * fixed bug 228: primary return values from
8532 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
8533 COMPILE or FUNCTION.
8534 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
8535 :TYPE will no longer signal errors on innocuous objects.
8536 * fixed bug 231b: SETQ is better at respecting type declarations in
8537 the lexical environment.
8538 * fixed a bug in DEFCLASS: classes named by symbols with no or
8539 unprintable packages can now be defined.
8540 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
8541 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
8542 * fixed compiler failure related to checking types of functions.
8543 (reported by Robert E. Brown)
8544 * the compiler is now much more consistent in its error-checking
8545 treatment of bounding index arguments to sequence functions: in
8546 (SAFETY 3) code, errors will be signalled in almost all cases if
8547 invalid sequence bounding indices are passed to functions defined
8548 by ANSI to operate on sequences.
8549 * fixed a bug in the build procedure: documentation of SBCL-specific
8550 packages is now preserved and available in the final Lisp image.
8551 * lifted FDEFINITION lookup out of loops in the implementation of
8552 many list operations. (thanks to Robert E. Brown)
8553 * fixed a bug in the reader: the #n# reader macro now works for
8554 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
8555 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
8556 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
8557 E. Brown and Tony Martinez respectively)
8558 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
8559 SLOT-BOUNDP: in particular, it is now able to optimize them much
8560 better, and is now not vulnerable to having packages renamed.
8561 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
8562 always called when a slot is not present in an instance. (thanks
8564 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
8565 longer signal an error on unreading a character following EOF on
8566 the previous constituent stream. (thanks to Tony Martinez)
8567 * fixed some bugs revealed by Paul Dietz' test suite:
8568 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
8569 not just nonnegative fixnums;
8570 ** the logical bit-array operators such as BIT-AND now accept an
8571 explicit NIL for their "opt-arg" argument (to indicate a
8572 freshly-consed result bit-array);
8573 ** ELT now signals an error on an invalid sequence index in safe
8575 ** the type system is now cleverer about negations of numeric
8576 types, and consequently understands the BIGNUM and RATIO types
8578 ** the type system is now cleverer about the interaction between
8579 INTEGER and RATIO types: while bugs still remain, many more
8580 cases are accurately computed;
8581 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
8582 if it is in the last clause;
8583 ** CONSTANTLY now correctly returns a side-effect-free function in
8585 ** DECLARE is no longer treated as a special-operator; in
8586 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
8587 * incremented fasl file version number due to the change in the
8588 DEFSTRUCT-SLOT-DESCRIPTION structure.
8590 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
8591 * minor incompatible change: code processed by the "interpreter" or
8592 EVAL now has a compilation optimization policy of (DEBUG 2)
8593 (changed from (DEBUG 1)) to improve debuggability of interactive
8594 development, and to allow the use of the debug RETURN command in
8596 * an experimental implementation of the RETURN command for the
8597 debugger has been included. (thanks to Frederik Kuivinen)
8598 * fixed bug 62: constraints were not propagated into a loop.
8599 * fixed bug in embedded calls of SORT (reported and investigated by
8601 * fixed some bugs revealed by Paul Dietz' test suite:
8602 ** printing and reading of arrays with some dimensions having
8603 length 0 (thanks to Gerd Moellmann);
8604 ** BOA constructor with &AUX argument without a default value does
8605 not cause a type error;
8606 ** CONSTANTP now returns true for all self-evaluating objects.
8608 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
8609 * fixed bug 127: DEFSTRUCT now does not clobber old structure
8610 accessors that are related by inheritance, as specified in the
8611 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
8612 Valtteri Vuorikoski)
8613 * The compiler is now able to inline functions that were defined in
8614 a complex lexical environment (e.g. inside a MACROLET).
8615 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
8617 * Support for the upcoming FreeBSD-5.0 release has been included.
8618 (thanks to Dag-Erling Smorgrav)
8619 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
8620 effect when it is not in a toplevel context.
8621 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
8622 stand a better chance of being correct. (thanks to Gerd
8624 * fixed bug in COERCE, which now signals an error on coercing a
8625 rational to a bounded real type which excludes the expected
8627 * The compiler is now able to derive types more accurately from the
8628 COERCE and COMPILE functions.
8629 * fixed bug 223: functional binding is considered to be constant
8630 only for symbols in the CL package.
8631 * fixed bug 231: SETQ did not check the type of a variable being set
8632 (reported by Robert E. Brown)
8633 * A new optimization for MAKE-INSTANCE has been included, fixing
8634 various bugs (including relating to :ALLOCATION :CLASS slots and
8635 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
8637 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
8638 ** As required by ANSI, LOOP now disallows anonymous collection
8639 clauses such as COLLECT I in conjunction with aggregate boolean
8640 clauses such as THEREIS (= I 1);
8641 ** LOOP now signals an error when any variable is reused in the
8642 same loop (including the potentially useful construct analogous
8643 to WITH A = 1 WITH A = (1+ A);
8644 ** IT is only a special loop symbol within the first clause of a
8645 conditional loop clause;
8646 ** LOOP with a typed iteration variable over a hashtable now
8647 signals a type error iff it should.
8648 * fixed some other bugs revealed by Paul Dietz' test suite:
8649 ** FILE-STREAM now names the class previously known as FD-STREAM;
8650 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
8651 argument) no longer signals an error;
8652 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
8653 of the slot symbol, rather than using the current package
8654 ((:CONC-NAME "") continues to intern the slot's name in the
8656 * incremented fasl file version number, because of the incompatible
8657 change to the DEFSTRUCT-DESCRIPTION structure, and again because
8658 of the new implementation of DEFINE-COMPILER-MACRO.
8660 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
8661 * Support for building SBCL for MIPS platforms running in
8662 little-endian mode has now been checked in, and basic
8663 functionality on said platforms verified.
8664 * minor incompatible change: PCL now records the pathname of a file
8665 in which methods and the like are defined, rather than its
8667 * minor incompatible change: TRUENAME now considers the truename of
8668 a file naming a directory to be the pathname with :DIRECTORY
8669 component indicating that directory.
8670 * minor incompatible change: a NAMED clause in the extended form of
8671 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
8672 reason for the previous behaviour is unclear.
8673 * more systematization and improvement of CLOS and MOP conformance
8674 in PCL (thanks to Gerd Moellman and Pierre Mai):
8675 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
8677 ** DEFINE-METHOD-COMBINATION no longer signals an error for
8678 primary methods with no specializers;
8679 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
8681 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
8682 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
8683 FORWARD-REFERENCED-CLASSes; error reporting on
8684 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
8686 ** SXHASH on CLOS instances now uses a slot internal to the
8687 instance to return different numbers on distinct instances,
8688 while preserving the same return value through invocations of
8690 ** DEFMETHOD signals errors when methods with longer incongruent
8691 lambda lists are added to generic functions;
8692 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
8693 CLASS, as specified in AMOP;
8694 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
8695 on the order returned by the primary method for classes of
8696 class STANDARD-CLASS;
8697 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
8698 * fixed some bugs shown by Paul Dietz' test suite:
8699 ** DOLIST puts its body in TAGBODY;
8700 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
8702 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
8703 value producing form;
8704 ** if more variables are given to PROGV than values, extra
8705 variables are bound and made to have no value;
8706 ** NSUBSTITUTE on list arguments gets the right answer with
8708 ** ELT signals an error of type TYPE-ERROR when the index argument
8709 is not a valid sequence index;
8710 ** LOOP signals (at macroexpansion time) an error of type
8711 PROGRAM-ERROR when duplicate variable names are found;
8712 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
8713 ** FUNCALL of special-operators now cause an error of type
8715 ** PSETQ now works as required in the presence of side-effecting
8716 symbol-macro places;
8717 ** NCONC accepts any object as its last argument;
8718 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
8720 ** loop-for-as-package does not require a package to be explicitely
8722 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
8724 * fixed bug 166: compiler preserves "there is a way to go"
8725 invariant when deleting code.
8726 * fixed bug 172: macro lambda lists with required arguments after
8727 &REST arguments now cause an error to be signalled. (thanks to
8729 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
8730 bug. (thanks to Matthew Danish)
8731 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
8733 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
8734 arguments are lexically rebound. (thanks to Gerd Moellmann and
8736 * fixed bug 194: error messages are now more informative when there
8737 is no primary method applicable in a call to a generic
8738 function. (thanks to Gerd Moellmann)
8739 * fixed bug in command line argument checking (thanks to Julian
8741 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
8742 (thanks to Matthew Danish)
8743 * incremented fasl file version number, because of the
8744 SXHASH-related changes in the layout of CLOS data structures
8746 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
8747 * minor incompatible change: The runtime (the Unix executable named
8748 "sbcl") is now much pickier about the .core files it will load.
8749 Essentially it now requires .core files to descend from the same
8750 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
8751 as the runtime does. (The intent is to prevent the crashes which
8752 can occur, and which can even be reported as mysterious failures,
8753 when people patch the sources or change the build parameters
8754 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
8755 sbcl and .core files.)
8756 * fixed bug: VALUES-LIST is no longer optimized away.
8757 * fixed bug 142: The FFI conversion of C string values to Lisp
8758 string values no longer conses excessively. (thanks to Nathan
8759 Froyd porting Raymond Toy's fix to CMU CL)
8760 * began to systematize and improve MOP conformance in PCL (thanks to
8761 Nathan Froyd, Gerd Moellman and Pierre Mai):
8762 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
8764 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
8765 ** FINALIZE-INHERITANCE is now called on class finalization;
8766 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
8767 argument precedence order.
8768 * fixed bug 202: The compiler no longer fails on functions whose
8769 derived types contradict their declared type.
8770 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
8771 so it can be non-toplevel.
8772 * The fasl file version number has changed (because of the new
8773 implementation of DEFMACRO).
8774 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
8775 safe code, that any length requirement by their type-specifier
8776 argument is valid. The exceptions to this are described in bug
8778 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
8779 functions now check the types of their inputs as required by ANSI.
8780 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
8781 introduced symbol is DECLAREd to be SPECIAL.
8782 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
8783 * fixed bug: :COUNT argument to sequence functions may be negative
8784 * fixed bug: body of DO-SYMBOLS may contain declarations
8785 * fixed bug: PUSHNEW now evaluates its arguments from left to right
8786 (reported by Paul F. Dietz, fixed by Gerd Moellman)
8787 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
8788 symbol macro only once
8789 * fixed printing of call frame when argument list is unavailable
8790 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
8791 * compiler no longer signals WARNING on unknown keyword
8794 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
8795 * A beta-quality port to the mips architecture running Linux,
8796 based on the old CMUCL backend, has been made. It has been tested
8797 on a big-endian kernel, and works sufficiently well to be able to
8798 rebuild itself; it has not been tested in little-endian mode.
8799 * fixed an inconsistency between gencgc.c and purify.c which made
8800 dumping/loading .core files unreliable
8801 * fixed bug 120a: The compiler now deals correctly with IFs where
8802 the consequent is the same as the alternative, instead of
8803 misderiving the return type. (thanks to Alexey Dejneka)
8804 * fixed bug 113: Logical pathnames are now dumpable (the logical
8805 host is resolved at load-time, throwing an error if it is not
8807 * fixed bug 174: FORMAT's error message is slightly clearer when a
8808 non-printing character is used in a format directive.
8809 * fixed several bugs in compiler checking of type declarations, i.e.
8810 violations of the Python "declarations are assertions" principle
8811 (thanks to Alexey Dejneka)
8812 * fixed several bugs in PCL's error checking (thanks to Gerd
8814 * fixed bug: printing of FILE-ERROR (thanks to Antonio
8816 * fixed bug in compilation of functions as first class values
8817 (thanks to Antonio Martinez-Shotton)
8818 * The compiler's handling TYPE-ERRORs which it can prove will
8819 inevitably happen at runtime has been cleaned up and corrected
8820 in several ways. (thanks to Alexey Dejneka)
8821 * improved argument type checking for various basic arithmetic
8822 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
8823 lavished on them in the past that they can be compiled in many
8824 ways in different special cases
8825 * fixed bug 181: compiler checks validity of user supplied type
8827 * cleaned up code flushing in optimization: Function calls which
8828 should signal errors for safety purposes (e.g. which ANSI says
8829 should signal errors when their arguments are of incorrect type)
8830 are no longer optimized away.
8831 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
8832 * incremented fasl file version number, because changes in the
8833 implementation of sequence functions like COERCE caused
8834 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
8835 in old inline expansions) to become undefined. (Actually these
8836 changes were later undone, so we might very well be binary
8837 compatible with 0.7.7 after all, but leaving the version number
8838 incremented seemed like the simplest and most conservative
8841 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
8842 * An alpha-quality port to the parisc architecture running Linux,
8843 based on the old CMUCL backend, has been made. This, even more so
8844 than the other backends, should be considered still a work in
8845 progress; known problems include that the Linux kernel in 64-bit
8846 mode does not propagate the correct sigcontext structure to
8847 userspace, and consequently SBCL on a parisc64 kernel will not
8849 * fixed bug 189: The compiler now respects NOTINLINE declarations for
8850 functions declared in FLET and LABELS. (I.e. "LET conversion" is
8851 suppressed.) Also now that the compiler is looking at declarations
8852 in the environment, it checks optimization declarations as well,
8853 and suppresses inlining when (> DEBUG SPEED).
8854 * More fixes have been made to treatment of floating point exception
8855 treatment and other Unix signals. In particular, floating point
8856 exceptions no longer cause Bus errors on the SPARC/Linux platform.
8857 * The detection and handling of control stack exhaustion (infinite
8858 or very deeply nested recursion) has changed. Stack exhaustion
8859 detection is now done by write-protecting pages at the OS level
8860 and applies at all optimization settings; when found, a
8861 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
8862 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
8863 be caught using IGNORE-ERRORS.
8864 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
8865 correctly when transforming recursive LABELS functions to LETs.
8866 (thanks to Alexey Dejneka)
8867 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
8868 that are names of constants or global variables.
8869 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
8870 alien routines with docstrings.
8871 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
8872 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
8874 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
8875 (thanks to Eric Marsden)
8876 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
8877 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
8878 * Bug fix: The SPARC backend can now compile functions involving
8879 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
8880 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
8881 to a functions expecting a PATHNAME-DESIGNATOR.
8882 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
8883 lambda lists. (thanks to Alexey Dejneka)
8884 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
8885 functions so that EXPORTing the name of the class doesn't cause
8886 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
8887 to Antonio Martinez for reporting this)
8888 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
8889 constant-folded without failing an assertion. (thanks to Einar
8890 Floystad Dorum for reporting this)
8891 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
8892 types are now dealt with more correctly by the compiler.
8893 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
8894 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
8895 behaviour analogous to RENAME-FILE. This puts its behaviour more
8896 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
8898 * The fasl file version number has changed again. (because of the
8899 bug fix involving the names of PCL MAKE-INSTANCE functions)
8901 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
8902 * bug fix: Floating point exceptions are treated much more
8903 consistently on the x86/Linux and PPC/Linux platforms.
8904 * Array initialization with :INITIAL-ELEMENT is now much faster for
8905 cases when the compiler cannot open code the array creation, but
8906 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
8907 array accesses have also seen a speed increase.
8908 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
8909 specified. (This was at the root of some bad interactions between
8910 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
8912 * bug fix: Internal error arguments for undefined functions are now
8913 computed correctly on the PPC/Linux platform.
8914 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
8915 Raymond Toy's patch for CMU CL)
8916 * Support for the Solaris 9 operating environment has been included
8917 (thanks to Daniel Merritt)
8918 * A very ugly but hopefully complete draft of the missing FFI chapter
8919 of the manual has been created by reformatting the corresponding
8920 CMU CL manual chapter into (currently very ugly and incoherent)
8921 DocBook and bringing it up to date for SBCL behavior. Thus, the
8922 manual is now essentially complete, at least by my extreme
8923 once-and-only-once standards, whereby it's acceptable to refer to
8924 the doc strings of SB-EXT functions as the primary documentation.
8925 * The fasl file version number has changed again, due to cleanup of
8926 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
8927 is no longer a static symbol.)
8929 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
8930 * SBCL now builds with OpenMCL (version 0.12) as the
8931 cross-compilation host; also, more progress has been made toward
8932 bootstrapping under CLISP.
8933 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
8935 * bug 158 fixed: The compiler can now deal with integer loop
8936 increments different from 1; fixing this turned out also to fix
8938 * bug 169 fixed: no more bogus warnings about using lexical bindings
8939 despite the presence of perfectly good SPECIAL declarations (thanks
8940 to David Lichteblau)
8941 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
8942 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
8943 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
8945 * bug 180 fixed: Method combination specifications no longer ignore
8946 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
8947 * bug fix: Structure type predicate functions now check their argument
8948 count as they should.
8949 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
8950 correctly. (thanks to Pierre Mai)
8951 * minor incompatible change: The --noprogrammer option is deprecated
8952 in favor of the new --disable-debugger option, which is very similar.
8953 (The major difference is that it takes effect at a slightly different
8954 time at startup, causing handling of errors in --sysinit and
8955 --userinit files will be affected differently.) The
8956 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
8957 been added to allow this functionality to be controlled from ordinary
8958 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
8959 maintainers, who might want to run non-interactive scripts to
8960 build SBCL cores which will later be used interactively.)
8961 * minor incompatible change: The LOAD function no longer, when given
8962 a wild pathname to load, loads all files matching that pathname.
8963 Instead, an error of type FILE-ERROR is signalled.
8965 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
8966 * bug 147 fixed: The compiler preserves its block link/count
8967 invariants more correctly now so that it doesn't crash. (thanks
8969 * Dynamic loading of object files in OpenBSD is now supported. (thanks
8971 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
8972 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
8973 no-value-for-this-character as NIL (as specified by ANSI).
8974 * HOST-NAMESTRING on physical pathnames now returns a string that is
8975 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
8976 (thanks to Christophe Rhodes)
8977 * The Alpha port handles icache flushing more correctly. (thanks to
8979 * More progress has been made toward bootstrapping under CLISP. (thanks
8980 to Christophe Rhodes)
8981 * The fasl file format has changed again, because dynamic loading
8982 on OpenBSD (which has non-ELF object files) motivated some cleanups
8983 in the way that foreign symbols are transformed and passed around.
8984 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
8985 is no longer treated as whitespace by the reader, but instead as
8986 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
8987 |A
\x7fB|, instead of A as it used to.
8989 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
8990 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
8991 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
8992 * SBCL now runs on the PPC archtiecture under Linux. It actually did
8993 this as of 0.7.1.45, but was left out of the previous news section
8994 (thanks to Dan Barlow)
8995 * SBCL now runs on the Solaris operating system on SPARC architectures
8996 (thanks to Christophe Rhodes's port of the CMUCL runtime)
8997 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
8998 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
8999 * SPARC backend cleanups, allowing builds of cores optimized for V8
9000 and V9 SPARCS, and also emission of code targeted to a particular
9001 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
9003 * SBCL is closer to bootstrapping under CLISP, thanks to various
9004 fixes by Christophe Rhodes.
9005 * The fasl file format has changed again, to allow the compiler's
9006 INFO database to support symbol macros.
9007 * The user manual (in doc/) is formatted into HTML more nicely.
9008 (thanks to coreythomas)
9009 * The system is smarter about SUBTYPEP relationships, especially
9010 those involving NOT types (including types such as ATOM which are
9011 represented internally using NOT types). Thus SUBTYPEP is less
9012 likely to return (VALUES NIL NIL) in general, and in particular
9013 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
9015 * The fasl file format has changed again, because the internal
9016 representation of types now includes a new slot to support the new
9017 SUBTYPEP-of-NOT-types logic.
9018 * (not a change in the main branch of SBCL, but a related prototype
9019 which can hopefully be merged into the main branch of SBCL in the
9020 future:) Brian Spilsbury has produced a Unicode-enabled variant of
9021 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
9022 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
9023 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
9024 dispatch macro character combinations. (thanks to Alexey Dejneka)
9025 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
9026 that superficially look like logical namestrings correctly.
9027 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
9029 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
9030 default supplied-p) for &optional and &key arguments. (thanks to
9033 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
9034 * incompatible change: The compiler is now less aggressive about
9035 tail call optimization, doing it only when (> SPACE DEBUG) or
9036 (> SPEED DEBUG). (This is an incompatible change because there are
9037 programs which relied on the old CMU-CL-style behavior to optimize
9038 away their unbounded recursion which will now die of stack overflow.)
9039 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
9040 for non-GENCGC systems has been increased to 20M (since that
9041 seems much closer to the likely performance optimum for modern
9042 systems than the old 4M value was)
9043 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
9044 and *DEBUG-PRINT-LEVEL*
9045 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
9046 of CMU CL's support for SPARC, and various endianness and other
9047 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
9048 * new syntactic sugar for the Unix command line: --load foo.bar is now
9049 an alternate notation for --eval '(load "foo.bar")'.
9051 ** The system now detects stack overflow and handles it gracefully,
9052 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
9053 optimization settings. (This is a good thing in general, and
9054 its introduction in this version should be particularly timely
9055 for anyone whose code fails because of suppression of tail
9057 ** The system now hunts for the C variable "environ" in a more
9058 devious way, to avoid segfaults when the C library version differs
9059 between compile time and run time. (thanks to Christophe Rhodes)
9060 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
9061 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
9062 ** The compiler no longer issues bogus style warnings for undefined
9063 classes in the same source file as the DEFCLASSes which defined
9064 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
9066 ** fixes in CONDITION class precedence list for undefined function
9067 errors (thanks to Alexei Dejneka)
9068 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
9069 correctly. (thanks to Dan Barlow)
9070 ** portability fixes aiming at bootstrapping under CLISP (thanks
9071 to Dave McDonald and Christophe Rhodes)
9072 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
9073 ** fixes in type translation and and type inference (thanks to
9075 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
9076 ** various fixes in the new ports (thanks to Dan Barlow)
9077 * several changes related to debugging:
9078 ** suppression of tail recursion, as noted above
9079 ** stack overflow detection, as noted above
9080 ** The default implementation of TRACE has changed. :ENCAPSULATE T
9081 is now the default. (For some time encapsulation has been more
9082 reliable than the breakpoint-based :ENCAPSULATE NIL
9083 implementation, at least on X86 systems; and I just noticed that
9084 encapsulation also seems closer to the spirit of the ANSI
9087 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
9089 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
9090 up properly again. (There was a packaging bug in 0.7.0 which
9091 left their definitions in SB-SYS::LOAD-FOREIGN and
9092 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
9093 vital for most things which interface to C-level interfaces,
9094 like extensions working with sockets or databases or
9095 Perl-compatible regexes or whatever, and the need to fix
9096 this bug is the main reason that 0.7.1 was released so
9098 ** DEFGENERIC is now choosier about the methods it redefines, so that
9099 reLOADing a previously-LOADed file containing DEFGENERICs does
9100 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
9101 cycle now works as it should. (thanks to Alexey Dejneka)
9102 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
9103 fixed by Christophe Rhodes. (He actually submitted this patch
9104 months ago, and I delayed until after 0.7.0.)
9105 ** Bug 111 (internal compiler confusion about runtime checks on
9106 FUNCTION types) was fixed by Alexey Dejneka.
9107 * Some internal cleanups (getting rid of variables which aren't
9108 needed now that the byte interpreter is gone) caused the fasl
9109 file format number to change again.
9111 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
9112 * major incompatible change: The default fasl file extension, i.e. the
9113 default extension for files produced by COMPILE-FILE, has changed
9114 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
9116 ** There are many changes in the implementation of the compiler.
9117 SBCL is now essentially a compiler-only implementation of ANSI
9118 Common Lisp. EVAL still "interprets" a few special cases, but
9119 almost all the interesting cases are handled by creating
9120 a LAMBDA expression, calling COMPILE on it, then calling
9121 FUNCALL on the result.
9122 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
9123 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
9124 Since the code is newer, there might still be some new bugs
9125 (though not as many as before Martin Atzmueller's fixes:-). But
9126 the new code is substantially simpler and clearer, and hopefully
9127 any remaining bugs will be simpler, less fundamental, and more
9128 fixable then the bugs in the old code.
9129 ** The revised compiler is still a little unsteady on its feet.
9131 *** The debugging information it produces (particularly the names
9132 of FUNCTION objects) is sometimes much less useful than what
9133 the old compiler produced.
9134 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
9135 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
9136 within a MACROLET) has been temporarily weakened.
9137 ** There are new compiler optimizations for various functions:
9138 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
9139 FIND-IF-NOT, POSITION-IF-NOT, and FILL
9140 *** the math functions TRUNCATE, FLOOR, and CEILING
9141 *** the function-of-all-trades COERCE
9142 Mostly these should be transparent, but there's one
9143 potentially-annoying problem (bug 117): when the compiler
9144 inline-expands a function and does type analysis on the result,
9145 it can create control paths which have type mismatches, and
9146 when it can't prove that those control paths aren't taken,
9147 it will issue WARNINGs about the type mismatches. This is
9148 a particular problem in practice for the new sequence functions.
9149 It's not clear how this should be fixed, and for now, a
9150 workaround is given in the entry for 117 in the BUGS file.
9151 ** (Because of the interaction between the two previous items --
9152 occasional inlining problems and new inline expansions -- some
9153 of the new sequence function optimizations won't really kick in
9154 completely until debugging information, and then inlining, are
9155 straightened out in some future version.)
9156 * minor incompatible changes:
9157 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
9158 DIRECTORY no longer implicitly promotes NIL slots of its
9159 pathname argument to :WILD. In particular, when you ask for the
9160 contents of a directory (which you used to be able to do without
9161 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
9162 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
9163 ** changes in behavior that ANSI explicitly defines to be
9164 implementation dependent:
9165 *** The new compiler-only implementation still conforms with ANSI,
9166 but acts a little different than before. Besides the obvious
9167 changes in performance tradeoffs (that the cost per form passed
9168 to EVAL has gone up, and the cost per form executed by EVAL
9169 has gone down), the behavior of the system changes a little
9170 because there are no longer any interpreted function objects.
9171 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
9172 e.g. doing COMPILE on the output of interactive DEFUN is
9174 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
9176 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
9177 has changed from (:CL) to NIL.
9178 *** The CHAR-NAME of unprintable ASCII characters which, unlike
9179 e.g. #\Newline and #\Tab, don't have names specified in the
9180 ANSI Common Lisp standard, is now based on their ASCII symbolic
9181 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
9182 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
9183 are no longer used for output.
9184 ** changes in internal implementation constants:
9185 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
9186 4 million. (If your application spends a lot of time GCing and
9187 you have a lot of RAM, you might want to experiment with
9188 increasing it even more.)
9189 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
9190 However, almost all old code should still continue to work without
9191 immediate update, as SB-C-CALL is now a (deprecated) nickname
9193 ** Old operator names in the style DEF-FOO are now deprecated in
9194 favor of new corresponding names DEFINE-FOO, for consistency with
9195 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
9196 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
9197 internal symbols, but a few supported extensions like
9198 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
9199 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
9200 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
9201 etc. as you get deeper into recursive calls to the debugger
9202 command loop, instead of the old "5]", "5]]", "5]]]"
9203 sequence. (I was motivated to do this when squabbles between
9204 ILISP and SBCL left me very deeply nested in the debugger. In the
9205 short term, this change will probably provoke more ILISP/SBCL
9206 squabbles, but hopefully it will be an improvement in the long run.)
9207 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
9208 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
9209 function, since declaiming return types involving aliens is
9210 (1) annoyingly messy to do by hand and (2) vital to efficient
9211 compilation of code which calls such functions.
9212 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
9213 longer reexported by the SB-EXT package. They're solely useful
9214 for alien code, so it seems more logical that you should get
9215 them from the SB-ALIEN package, not in SB-EXT.
9216 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
9217 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
9218 features. Instead, the code that they used to control is always
9219 built into the system.
9220 * many other bug fixes
9221 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
9222 advantage of the new EVAL-WHEN stuff and to clean them up in
9223 general, and they are now more ANSI-compliant in a number of
9224 ways. Martin Atzmueller is responsible for a lot of this.
9225 ** Besides the cleanups discussed above, Martin Atzmueller fixed
9227 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
9228 *** correct ERROR type for various file operations
9229 *** some fixes for Lisp streams
9230 *** DEFMETHOD syntax checking
9231 *** changing old weird representation of debug information as
9232 strings (which, among their other deficiencies, don't transform
9233 correctly when you rename packages, and don't change their
9234 print representation when you change things like *PACKAGE*
9235 and *PRINT-LENGTH*) to symbols and lists of symbols
9236 He also made several improvements and fixed several bugs in DESCRIBE.
9237 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
9239 *** misbehavior of WRITE-STRING/WRITE-LINE
9240 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
9241 and several other LOOP problems as well
9242 *** DIRECTORY when similar filenames are present
9243 *** DEFGENERIC with :METHOD options
9244 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
9245 *** bug in the optimization of ARRAY-ELEMENT-TYPE
9246 *** argument ordering in FIND with :TEST option
9247 *** mishandled package designator argument in APROPOS-LIST
9248 *** various problems in the backquote readmacro
9249 *** a bug in APROPOS
9250 *** probably some others that I'm not describing very well here,
9251 since the CVS log documents them by reference to sbcl-devel
9252 messages, and the SourceForge archives aren't working well.:-(
9253 ** Dan Barlow improved the Alpha port (and is making progress on the
9254 PPC port, for those of you who think different).
9255 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
9256 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
9257 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
9258 continues to work on the SPARC port (for those of you in a position
9259 to look down upon our little PC-compatible boxes from a great height).
9260 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
9261 and uses that copy, rather than the current dynamic value, when
9262 it's trying to decide whether to truncate output. Thus e.g.
9263 (let ((*print-lines* 50))
9264 (pprint-logical-block (stream nil)
9266 (let ((*print-lines* 8))
9267 (print (aref possiblybigthings i) stream)))))
9268 should now truncate the logical block only at 50 lines, instead of
9269 often truncating it at 8 lines, as it did before.
9270 * The doc/cmucl/ directory, containing old CMU CL documentation
9271 from the time of the fork, is no longer part of the base system.
9272 SourceForge has shut down its anonymous FTP service, and with it
9273 my original plan for distributing the old CMU CL documentation
9274 there. For now, if you need these files you can download an old
9275 SBCL source release and extract them from it.
9276 * The fasl file version number changed again, for dozens of reasons,
9277 some of which are apparent above.
9279 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
9280 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
9281 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
9282 patch, so that DISASSEMBLE output is much nicer.
9283 * The code in the SB-PROFILE package now seems reasonably stable.
9284 I still haven't decided what the final interface should look like
9285 (I'd like PROFILE to interact cleanly with TRACE, since both
9286 facilities use function encapsulation) but if you have a need
9287 for profiling now, you can probably use it successfully with
9288 the current CMU-CL-style interface.
9289 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
9290 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
9291 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
9292 link now returns the dangling link itself, and for similar
9293 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
9294 link itself. (In these cases the old code signalled an error and
9295 looped endlessly, respectively.) Thus, DIRECTORY now works even
9296 in the presence of dangling and cyclic symbolic links.
9297 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
9298 is now a supported extension again, since the consensus on
9299 sbcl-devel was that it can be useful for ordinary development
9300 work, not just for debugging SBCL itself.
9301 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
9302 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
9303 that currently-defined functions might be redefined later with
9304 different return types.
9305 * Hash tables can be printed readably, as inspired by CMU CL code
9306 of Eric Marsden and SBCL code of Martin Atzmueller.
9307 * better error handling in CLOS method combination, thanks to
9308 Martin Atzmueller porting Pierre Mai's CMU CL patches
9309 * more overflow fixes for >16Mbyte I/O buffers
9310 * A bug in READ has been fixed, so that now a single Ctrl-D
9311 character suffices to cause end-of-file on character streams.
9312 In particular, now you only need one Ctrl-D at the command
9313 line (not two) to exit SBCL.
9314 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
9316 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
9317 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
9318 does the right thing.
9319 * The implementation of some type tests, especially for CONDITION
9320 types, is now tidier and maybe faster, due to CMU CL code
9321 originally by Douglas Crosher, ported by Martin Atzmueller.
9322 * Some math functions have been fixed, and there are new
9323 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
9324 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
9325 * (There are also some new optimizers in contrib/*-extras.lisp. Those
9326 aren't built into sbcl-0.6.13, but are a sneak preview of what's
9327 likely to be built into sbcl-0.7.0.)
9328 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
9329 CL, ported to SBCL by Martin Atzmueller)
9330 * DESCRIBE now gives more information in some cases. (Pierre Mai's
9331 patch to CMU CL, ported to SBCL by Martin Atzmueller)
9332 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
9333 * There's a new slam.sh hack to shorten the edit/compile/debug
9334 cycle for low-level changes to SBCL itself, and a new
9335 :SB-AFTER-XC-CORE target feature to control the generation of
9336 the after-xc.core file needed by slam.sh.
9337 * minor incompatible change: The ENTRY-POINTS &KEY argument to
9338 COMPILE-FILE is no longer supported, so that now every function
9339 gets an entry point, so that block compilation looks a little
9340 more like the plain vanilla ANSI section 3.2.2.3 scheme.
9341 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
9342 returns the number of bytes consed since the system started,
9343 rather than the number consed since the first time the function
9344 was called. (The new definition parallels ANSI functions like
9345 CL:GET-INTERNAL-RUN-TIME.)
9346 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
9347 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
9348 supported. Now DIRECTORY always does the abstract Common-Lisp-y
9349 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
9350 * Fasl file version numbers are now independent of the target CPU,
9351 since historically most system changes which required version
9352 number changes have affected all CPUs equally. Similarly,
9353 the byte fasl file version is now equal to the ordinary
9356 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
9357 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
9358 is no longer recognized. I apologize for this, because it was
9359 listed in SB-EXT as a supported extension, but I found that
9360 its existing behavior was poorly specified, as well as incorrectly
9361 specified, and it looked like too much of a mess to straighten it
9362 out. I have enough on my hands trying to get ANSI stuff to work..
9363 * many patches ported from CMU CL by Martin Atzmueller, with
9364 half a dozen bug fixes in pretty-printing and the debugger, and
9365 half a dozen others elsewhere
9366 * fixed bug 13: Floating point infinities are now supported again.
9367 They might still be a little bit flaky, but thanks to bug reports
9368 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
9369 as flaky as they were.
9370 * The --noprogrammer command line option is now supported. (Its
9371 behavior is slightly different in detail from what the old man
9372 page claimed it would do, but it's still appropriate under the
9373 same circumstances that the man page talks about.)
9374 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
9375 are now supported, and enabled by default. Thus, the compiler can
9376 handle many floating point and complex operations much less
9377 inefficiently. (Thus e.g. you can implement a complex FFT
9379 * The compiler now detects type mismatches between DECLAIM FTYPE
9380 and DEFUN better, and implements CHECK-TYPE more correctly, and
9381 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
9382 thanks to patches from Martin Atzmueller.
9383 * various fixes to make the cross-compiler more portable to
9384 ANSI-conforming-but-different cross-compilation hosts (notably
9385 Lispworks for Windows, following bug reports from Arthur Lemmens)
9386 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
9387 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
9388 fixed thanks to Pierre Mai's CMU CL patches.
9389 * fixes to keep the system from overflowing internal counters when
9390 it tries to use i/o buffers larger than 16M bytes
9391 * fixed bug 45a: Various internal functions required to support
9392 complex special functions have been merged from CMU CL sources.
9393 (When I was first setting up SBCL, I misunderstood a compile-time
9394 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
9395 * improved support for type intersection and union, fixing bug 12
9396 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
9397 more obscure bugs as well
9398 * some steps toward byte-compiling non-performance-critical
9399 parts of the system, courtesy of patches from Martin Atzmueller
9400 * Christophe Rhodes has made some debian packages of sbcl at
9401 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
9402 From his sbcl-devel e-mail of 2001-04-08 they're not completely
9403 stable, but are nonetheless usable. When he's ready, I'd be happy
9404 to add them to the SourceForge "File Releases" section. (And if
9405 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
9406 * new fasl file format version number (because of changes in
9407 internal representation of (OR ..) types to accommodate the new
9408 support for (AND ..) types, among other things)
9410 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
9411 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
9413 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
9415 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
9416 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
9417 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
9418 * DESCRIBE now works on structure objects again.
9419 * Most function call argument type mismatches are now handled as
9420 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
9421 know whether the function will be redefined before the call is
9422 executed. (The compiler could flag local calls with full WARNINGs,
9423 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
9424 it doesn't keep track of enough information to know whether calls
9425 are local in this sense.)
9426 * Compiler output is now more verbose, with messages truncated
9427 later than before. (There should be some supported way for users
9428 to override the default verbosity, but I haven't decided how to
9429 provide it yet, so this behavior is still controlled by the internal
9430 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
9431 src/compiler/ir1util.lisp.)
9432 * Fasl file format version numbers have increased again, because
9433 support for the Gray streams extension changes the layout of the
9434 system's STREAM objects.
9435 * The Gray subclassable streams extension now works, thanks to a
9436 patch from Martin Atzmueller.
9437 * The full LOAD-FOREIGN extension (not just the primitive
9438 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
9439 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
9440 but like most other programs, it defaults to copying the Unix
9441 environment from the original process instead of starting the
9442 new process in an empty environment.
9443 * Extensions which manipulate the Unix environment now support
9444 an :ENVIRONMENT keyword option which doesn't smash case or
9445 do other bad things. The CMU-CL-style :ENV option is retained
9446 for porting convenience.
9447 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
9448 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
9450 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
9452 * A patch from Martin Atzmueller seems to have solved the SIGINT
9453 problem, and as far as we know, signal-handling now works cleanly.
9454 (If you find any new bugs, please report them!)
9455 * The system no longer defaults Lisp source file names to types
9456 ".l", ".cl", or ".lsp", but only to ".lisp".
9457 * The compiler no longer uses special default file extensions for
9458 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
9459 seems to expect a single default extension for all compiled code,
9460 and there's no compelling reason to try to stretch the standard
9461 to allow two different extensions.) Instead, byte-compiled files
9462 default to the same extension as native-compiled files.
9463 * Fasl file format version numbers have increased again, because
9464 a rearrangement of internal implementation packages made some
9465 dumped symbols in old fasl files unreadable in new cores.
9466 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
9467 many fewer weird special cases.
9468 * Bug #17 (differing COMPILE-FILE behavior between logical and
9469 physical pathnames) has been fixed, and some related misbehavior too,
9470 thanks to a patch from Martin Atzmueller.
9471 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
9472 by Tim Moore, ported to SBCL by Martin Atzmueller.
9473 * Martin Atzmueller fixed several filesystem-related problems,
9474 including bug #36, in part by porting CMU CL patches, which were
9475 written in part by Paul Werkowski.
9476 * More compiler warnings in src/runtime/ are gone, thanks to
9477 more patches from Martin Atzmueller.
9478 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
9481 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
9483 * DESCRIBE now works on CONDITION objects.
9484 * The debugger now handles errors which arise when trying to print
9485 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
9487 * The build system now uses an additional file, customize-target-features.lisp,
9488 to allow local modifications to the target *FEATURES* list. (The point of
9489 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
9490 debugging features enabled, without having to worry about propagating it
9491 into everyone's system when I do a "cvs update".) When no
9492 customize-target-features.lisp file exists, the target *FEATURES* list
9493 should be constructed the same way as before.
9494 * fixed bugs in DEFCONSTANT ANSI-compatibility:
9495 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
9496 warn about behavior which is undefined under the ANSI spec. Note: This
9497 is specified by ANSI, but it's not very popular with programmers.
9498 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
9499 macro in the SBCL sources for an example of a workaround which you
9500 might use to make portable ANSI-standard code which does what you want.
9501 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
9502 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
9503 when it's used as a non-toplevel form. (This is required in order
9504 to implement the DEFCONSTANT-EQX macro.)
9505 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
9506 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
9507 funny things, due to bugs in the implementation of EVAL-WHEN
9508 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
9509 non-toplevel DEFCONSTANTs are uncommon.)
9510 * The core file version number and fasl file version number have been
9511 incremented, because the old noncompliant DEFCONSTANT behavior involved
9512 calling functions which no longer exist, and because I also took the
9513 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
9514 * fixed bug 1 (error handling before read-eval-print loop starts), and
9515 redid debugger restarts and related debugger commands somewhat while
9517 ** The QUIT debugger command is gone, since it did something
9518 rather different than the SB-EXT:QUIT command, and since it never
9519 worked properly outside the main toplevel read/eval/print loop.
9520 Invoking the new TOPLEVEL restart provides the same functionality.
9521 ** The GO debugger command is also gone, since you can just invoke
9522 the CONTINUE restart directly instead.
9523 ** The TOP debugger command is also gone, since it's redundant with the
9524 FRAME 0 command, and since it interfered with abbreviations for the
9526 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
9528 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
9529 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
9530 some porting work by Martin Atzmueller)
9531 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
9532 with a boatload of patches which he ported to SBCL. Now that those
9534 ** The system tries to make sure that its low-priority messages
9535 are prefixed by semicolons, to help people who like to use
9536 syntax highlighting in their ILISP buffer. (This patch
9537 was originally due to Raymond Toy.)
9538 ** The system now optimizes INTEGER-LENGTH better, thanks to more
9539 patches originally written by Raymond Toy.
9540 ** The compiler understands coercion between single-value and
9541 multiple-VALUES type expressions better, getting rid of some very
9542 weird behavior, thanks to patches originally by Robert MacLachlan
9543 and Douglas Crosher.
9544 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
9545 lambda lists, thanks to a patch originally by Pierre Mai.
9546 ** The system no longer bogusly warns about "abbreviated type
9548 ** The compiler gets less confused by inlining and RETURN-FROM,
9549 thanks to some patches originally by Tim Moore.
9550 ** The system no longer hangs when dumping circular lists to fasl
9551 files, thanks to a patch originally from Douglas Crosher.
9552 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
9553 undefined function error.
9554 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
9555 in structure slot initforms) for now, documented workaround instead:-|
9556 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
9557 * fixed bug 5: added stubs for various Gray stream functions called
9558 in the not-a-CL:STREAM case, so that even when Gray streams aren't
9559 installed, at least appropriate type errors are generated
9560 * fixed bug 8: better reporting of various PROGRAM-ERRORs
9561 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
9562 consistently in DEFMETHOD forms.
9563 * removed bug 21 from BUGS, since Martin Atzmueller points out that
9564 it doesn't seem to affect SBCL after all
9565 * The C runtime system now builds with better optimization and many
9566 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
9568 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
9570 * The system is now under CVS at SourceForge (instead of the
9571 CVS repository on my home machine).
9572 * The new signal handling code has been tweaked to treat register
9573 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
9574 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
9575 downstream, e.g. in debug-int.lisp, has implicit dependencies
9576 on the unsignedness of integer representation of machine words,
9577 and that caused the system to bomb out with infinite regress
9578 when trying to recover from type errors involving signed values,
9579 e.g. (BUTLAST '(1 2 3) -1).)
9580 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
9581 (This was one of the bugs Peter Van Eynde reported back in July.)
9582 * The system now uses code inspired by Colin Walters' O(N)
9583 implementation of MAP (from the cmucl-imp@cons.org mailing
9584 list, 2 September 2000) when it can't use a DEFTRANSFORM to
9585 inline the MAP operation, and there is more than one
9586 sequence argument to the MAP call (so that it can't just
9587 do ETYPECASE once and for all based on the type of the
9588 single sequence argument). (The old non-inline implementation
9589 of the general M-argument sequence-of-length-N case required
9590 O(M*N*N) time when any of the sequence arguments were LISTs.)
9591 * The QUIT :UNIX-CODE keyword argument has been renamed to
9592 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
9593 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
9595 * Raymond Wiker's patches to port dynamic loading from Linux to
9596 FreeBSD have been added.
9597 * The BUGS file is now more nearly up to date, thanks in large part
9598 to Martin Atzmueller's review of it.
9599 * The debugger now flushes standard output streams before it begins
9600 its output ("debugger invoked" and so forth).
9601 * The core version number and fasl file version number have both
9602 been incremented, because of incompatible changes in the layout
9604 * FINISH-OUTPUT is now called more consistently on QUIT. (It
9605 used to not be called for a saved Lisp image.)
9606 * Martin Atzmueller's version of a patch to fix a compiler crash,
9607 as posted on sbcl-devel 13 September 2000, has been installed.
9608 * Instead of installing Martin Atzmueller's patch for the
9609 compiler transform for SUBSEQ, I deleted the compiler transform,
9610 and transforms for some similar consing operations.
9611 * A bug in signal handling which kept TRACE from working on OpenBSD
9613 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
9614 away by constant folding
9615 * The system now defines its address space constants in one place
9616 (in the Lisp sources), and propagates them automatically elsewhere
9617 (through GENESIS and the sbcl.h file). Therefore, patching the
9618 address map is less unnecessarily tedious and error-prone. The
9619 Lisp names of address space constants have also been systematized.
9620 * CVS tags like dollar-Header-dollar have been removed from
9621 the sources, because they have never saved me trouble and
9622 they've been source of trouble working with patches and other
9623 diff-related operations.
9624 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
9625 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
9627 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
9629 * The system has been ported to OpenBSD.
9630 * The system now compiles with a simple "sh make.sh" on the systems
9631 that it's supported on. I.e., now you no longer need to tweak
9632 text in the target-features.lisp-expr and symlinks in src/runtime/
9633 by hand, the make.sh takes care of it for you.
9634 * The system is no longer so grossly inefficient when compiling code
9635 involving vectors implemented as general (not simple) vectors (VECTOR T),
9636 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
9637 which dares to use the various sequence functions on non-simple
9638 vectors, takes less of a performance hit.
9639 * There is now a primitive type predicate VECTOR-T-P
9640 to test for the (VECTOR T) type, so that e.g.
9641 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
9642 can now be compiled with some semblance of efficiency. (The old code
9643 turned the type declaration into a full call to %TYPEP at runtime!)
9644 * AREF on (VECTOR T) is still not fast, since it's still compiled
9645 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
9646 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
9647 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
9648 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
9649 without making full calls to SUBTYPEP at runtime.
9650 (Some analogous efficiency issues for non-simple vectors specialized to
9651 element types other than T, or for non-simple multidimensional arrays,
9652 have not been addressed. They could almost certainly be handled the
9653 same way if anyone is motivated to do so.)
9654 * The changes in array handling break binary compatibility, so
9655 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
9656 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
9657 instead of (VALUES T T).
9658 * By following the instructions that Dan Barlow posted to sbcl-devel
9659 on 2 July 2000, I was able to enable primitive dynamic object
9660 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
9661 functionality is not implemented (since it calls ld to resolve
9662 library references automatically, requiring RUN-PROGRAM for its
9663 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
9664 try to resolve library references) is now supported.
9665 * The system now flushes the standard output streams when it terminates,
9666 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
9667 them at several other probably-convenient times, e.g. in each pass of
9668 the toplevel read-eval-print loop, and after evaluating a form given
9669 as an "--eval" command-line option. (These changes were motivated by a
9670 discussion of stream flushing issues on cmucl-imp in August 2000.)
9671 * The source transform for TYPEP of array types no longer assumes
9672 that an array whose element type is a not-yet-defined type
9673 is implemented as an array of T, but instead punts, so that the
9674 type will be interpreted at runtime.
9675 * There is now some support for cross-compiling in make.sh: each of
9676 the phases of make.sh has its own script. (This should be transparent
9677 to people doing ordinary, non-cross-compile builds.)
9678 * Since my laptop doesn't have hundreds of megabytes of memory like
9679 my desktop machine, I became more motivated to do some items on
9680 my to-do list in order to reduce the size of the system a little:
9681 ** Arrange for various needed-only-at-cold-init things to be
9682 uninterned after cold init. To support this, those things have
9683 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
9684 symbols with such names are now uninterned after cold init).
9685 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
9686 fasl files for cold load.
9687 ** Remove the old compiler structure pooling code (which used to
9688 be conditional on the target feature :SB-ALLOC) completely.
9689 ** Redo the representation of some data in cold init to be more compact.
9690 (I also looked into supporting byte compiled code at bootstrap time,
9691 which would probably reduce the size of the system a lot, but that
9692 looked too complicated, so I punted for now.)
9693 * The maximum signal nesting depth in the src/runtime/ support code has
9694 been reduced from 4096 to 256. (I don't know any reason for the very
9695 large old value. If the new smaller value turns out to break something,
9696 I'll probably just bump it back up.)
9697 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
9699 * Many, many bugs reported by Peter Van Eynde have been added to
9700 the BUGS list; some have even been fixed.
9701 * While enabling dynamic object file loading, I tried to make the
9702 code easier to understand, renaming various functions and variables
9703 with less ambiguous names, and changing some function calling
9704 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
9705 * While trying to figure out how to do the OpenBSD port, I tried to
9706 clean up some of the code in src/runtime/. In particular, I dropped
9707 support for non-POSIX signal handling, added various comments,
9708 tweaked the code to reduce the number of compilation warnings, and
9709 renamed some files to increase consistency.
9710 * To support the new automatic configuration functionality in make.sh,
9711 the source file target-features.lisp-expr has been replaced with the
9712 source file base-target-features.lisp-expr and the machine-generated
9713 file local-target-features.lisp-expr.
9714 * fixed a stupid quoting error in make.sh so that using CMU CL
9715 "lisp -batch" as cross-compilation host works again
9717 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
9719 * DESCRIBE no longer tries to call itself recursively to describe
9720 bound/fbound values, so that it no longer fails on symbols which are
9721 bound to themselves (like keywords, T, and NIL).
9722 * DESCRIBE now works on generic functions.
9723 * The printer now prints less-screwed-up representations of closures
9724 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
9725 * A private symbol is used instead of the :EMPTY keyword previously
9726 used to mark empty slots in hash tables. Thus
9727 (DEFVAR *HT* (MAKE-HASH-TABLE))
9728 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
9729 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
9730 now does what ANSI says that it should. (You can still get
9731 similar noncompliant behavior if bang on the hash table
9732 implementation with all the symbols you get back from
9733 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
9734 This breaks binary compatibility, since tests for equality to
9735 :EMPTY are wired into things like the macroexpansion of
9736 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
9738 * There's now a minimal placeholder implementation for CL:STEP,
9739 as required by ANSI.
9740 * An obscure bug in the interaction of the normal compiler, the byte
9741 compiler, inlining, and structure predicates has been patched
9742 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
9743 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
9745 * Missing ordinary arguments in a macro call are now detected even
9746 when the macro lambda list contains &KEY or &REST.
9747 * The debugger no longer complains about encountering the top of the
9748 stack when you type "FRAME 0" to explicitly instruct it to go to
9749 the top of the stack. And it now prints the frame you request even
9750 if it's the current frame (instead of saying "You are here.").
9751 * As specified by ANSI, the system now always prints keywords
9752 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
9754 * The default initial SIZE of HASH-TABLEs is now smaller.
9755 * Type information from CLOS class dispatch is now propagated
9756 into DEFMETHOD bodies, so that e.g.
9757 (DEFMETHOD FOO ((X SINGLE-FLOAT))
9759 is now basically equivalent to
9760 (DEFMETHOD FOO ((X SINGLE-FLOAT))
9761 (DECLARE (TYPE SINGLE-FLOAT X))
9763 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
9764 operation, without having to do run-time type dispatch.
9765 * The macroexpansion of DEFMETHOD has been tweaked so that it has
9766 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
9767 * Since I don't seem to be making big file reorganizations very often
9768 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
9769 is overflowing my ability to conveniently back them up), I've finally
9770 checked the system into CVS. (The CVS repository is on my home system,
9771 not at SourceForge -- putting it on SourceForge might come later.)
9772 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
9773 high-level GC-NOTIFY-FOO functions send their output. (There's
9774 still very little control of where low-level verbose GC functions
9775 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
9776 less than it used to -- the GC-NOTIFY-FOO functions are now under
9777 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
9778 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
9779 in only one place in the source code, and propagates it automatically
9780 everywhere that it's needed. Thus e.g. when I bump the version from
9781 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
9782 * The C source files now include boilerplate legalese and documentation
9783 at the head of each file (just as the Lisp source files already did).
9784 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
9785 to his page will be replaced with a link to his new CLiki service.
9787 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
9789 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
9790 * The build process now looks for GNU make under the default name "gmake",
9791 instead of "make" as it used to. If GNU make is not available as "gmake"
9792 on your system, you can change this default behavior by setting the
9793 GNUMAKE environment variable.
9794 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
9795 can build without error under CMU CL.
9797 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
9799 * There is now a partial SBCL user manual (with some new text and some
9800 text cribbed from the CMU CL manual).
9801 * The beginnings of a profiler have been added (starting with the
9802 CMU CL profiler and simplifying and cleaning up). Eventually the
9803 main interface should be through the TRACE macro, but for now,
9804 it's still accessed through vaguely CMU-CL-style functions and macros
9805 exported from the package SB-PROFILE.
9806 * Some problems left over from porting CMU CL to the new
9807 cross-compilation bootstrap process have been cleaned up:
9808 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
9809 instead of SB!XC:DEFMACRO, compounded by an oversight on my
9810 part when getting rid of the compiler *BACKEND* stuff.)
9811 ** The value of *NULL-TYPE* was screwed up, because it was
9812 being initialized before the type system knew the final
9813 definition of the 'NULL type. This screwed up several key
9814 optimizations in the compiler, causing inefficiency in all sorts
9815 of places. (I found it because I wanted to understand why
9816 GET-INTERNAL-RUN-TIME was consing.)
9817 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
9818 PROCLAIM FTYPE information. Unfortunately this broke binary
9819 compatibility again, since now the forms output by DEFGENERIC
9820 to refer to functions which didn't exist in 0.6.3.
9821 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
9822 can use the new (as of 0.6.3) transform for SOME into MAP into
9824 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
9825 values to (INTEGER 0 1000000), so that the time code will no longer
9826 occasionally get blown up by Linux returning 1000000 microseconds
9827 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
9828 its output conform to the ANSI spec. (Alas, this makes its output
9829 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
9830 * A full call to MAP NIL with a single sequence argument no longer conses.
9831 * fixes to problems pointed out by Martin Atzmueller:
9832 * The manual page no longer talks about multiprocessing as though
9833 it were currently supported.
9834 * The ILISP support patches have been removed from the distribution,
9835 because as of version 5.10.1, ILISP now supports SBCL without us
9836 having to maintain patches.
9837 * added a modified version of Raymond Toy's recent CMU CL patch for
9838 EQUALP comparison of HASH-TABLE
9840 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
9842 * The system still can't cross-compile itself with
9843 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
9844 entails), but at least it can compile more of itself that way
9845 than it used to be able to, and various buglets which were uncovered
9846 by trying to cross-compile itself that way have now been fixed.
9847 * This release breaks binary compatibility again. This time
9848 at least I've incremented the FASL file format version to 2, so that the
9849 problem can be detected reliably instead of just causing weird errors.
9850 * various new style warnings:
9851 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
9852 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
9853 ** using the lexical binding of a variable named in the *FOO* style
9854 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
9855 as specified by ANSI.
9856 * *RANDOM-STATE* is no longer automatically initialized from
9857 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
9858 default behavior of the system is to repeat its behavior every time
9859 it's run. If you'd like to change this behavior, you can always
9860 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
9861 old convention there was no comparably easy way to get the system to
9862 repeat its behavior every time it was run.
9863 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
9864 FTYPE declarations has been removed, in favor of their ANSI
9865 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
9866 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
9867 the types of their sequence arguments can be determined at compile time.
9868 This is done through a new open code expansion for MAP which eliminates
9869 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
9870 argument types can be determined at compile time.
9871 * The optimizer now transforms COERCE into an identity operation when it
9872 can prove that the coerced object is already of the correct type. (This
9873 can be a win for machine generated code, including the output of other
9874 optimization transforms, such as the MAP transform above.)
9875 * Credit information has been moved from source file headers into CREDITS.
9876 * Source file headers have been made more standard.
9877 * The CASE macro now compiles without complaining even when it has
9880 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
9882 * (Note that the way that the PCL macroexpansions were rewritten
9883 to accommodate the change in DEFGENERIC below breaks binary
9884 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
9885 not run under sbcl-0.6.2. Once we get out of alpha releases,
9886 i.e. hit release 1.0.0, we'll probably try to maintain binary
9887 compatibility between maintenance releases, e.g. between sbcl-1.4.3
9888 and sbcl-1.4.4. Until then, however, it might be fairly common
9889 for maintenance releases to break binary compatibility.)
9890 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
9892 * The reporting of unhandled signals has been changed to print some
9893 explanatory text as well as the report form. (Previously only
9894 the report form was printed.)
9895 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
9896 it defines, so that the compiler no longer issues undefined function
9897 warnings for compiled-but-not-yet-loaded generic functions.
9898 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
9899 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
9900 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
9901 section of the ANSI spec are supported.
9902 * The "" nickname for the "KEYWORD" package has been removed.
9903 The reader still handles symbol tokens which begin with a package marker
9904 as keywords, but it doesn't expose its mechanism for doing so in the
9905 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
9906 * The system now issues STYLE-WARNINGs for contradictory TYPE
9907 proclamations. (Warnings for contradictory FTYPE proclamations would
9908 be nice too, but those can't be done usefully unless the type system
9909 is made smarter about FUNCTION types.)
9910 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
9911 systematized, so that "*target-*.lisp is supposed to exist only on the
9912 target and imply that there's a related file which exists on the
9913 host, and *host-*.lisp is supposed to exist only on the host and imply
9914 that there's a related file which exists on the target. This involves a
9915 lot of renaming. Hopefully the acute confusion caused by the renaming
9916 will be justified by the reduction in chronic confusion..
9917 ** runtime-type.lisp -> early-target-type.lisp
9918 ** target-type.lisp -> late-target-type.lisp
9919 ** early-host-format.lisp -> early-format.lisp
9920 ** late-host-format.lisp -> late-format.lisp
9921 ** host-error.lisp -> misc-error.lisp
9922 ** early-error.lisp -> early-target-error.lisp
9923 ** late-error.lisp -> late-target-error.lisp
9924 ** host-defboot.lisp -> early-defboot.lisp
9925 ** code/misc.lisp -> code/target-misc.lisp
9926 ** code/host-misc.lisp -> code/misc.lisp
9927 ** code/numbers.lisp -> code/target-numbers.lisp
9928 ** code/early-numbers.lisp -> numbers.lisp
9929 ** early-host-type.lisp -> early-type.lisp
9930 ** late-host-type.lisp -> late-type.lisp
9931 ** host-typep.lisp -> typep.lisp
9932 ** load.lisp -> target-load.lisp
9933 ** host-load.lisp -> load.lisp
9934 ** host-disassem.lisp -> disassem.lisp
9935 ** host-insts.lisp -> insts.lisp
9936 ** byte-comp.lisp -> target-byte-comp.lisp
9937 ** host-byte-comp.lisp -> byte-comp.lisp
9938 ** host-signal.lisp -> signal.lisp
9939 ** host-defstruct.lisp -> defstruct.lisp
9940 ** late-target-type.lisp -> deftypes-for-target.lisp
9941 Furthermore, several other previously target-only files foo.lisp (e.g.
9942 hash-table.lisp and random.lisp) have been split into a target-and-host
9943 foo.lisp file and a target-only target-foo.lisp file, with their key type
9944 definitions in the target-and-host part, so that the cross-compiler will
9945 know more about target types.
9946 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
9947 gone away. In their place are various *BACKEND-FOO* variables
9948 corresponding to the slots of the old structure.
9949 * A bug which caused the SB-COLD bootstrap-time package to be propagated
9950 into the target SBCL has been fixed.
9951 * The chill.lisp system for loading cold code into a running SBCL
9953 * Support for the CMU CL "scavenger hook" extension has been removed.
9954 (It was undocumented and unused in the CMU CL sources that SBCL was
9955 derived from, and stale in sbcl-0.6.1.)
9956 * Various errors in the cross-compiler type system were detected
9957 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
9958 (enabling various consistency checks). Many of them were fixed,
9959 but some hard problems remain, so the compiler is back to
9960 running without *TYPE-SYSTEM-INITIALIZED* for now.
9961 * As part of the cross-compiler type system cleanup, I implemented
9962 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
9963 * I have started adding UNCROSS calls throughout the type system
9964 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
9965 on cross-compiler input files will be able to go away, and various
9967 * CONSTANTP now returns true for quoted forms (as explicitly required
9970 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
9972 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
9973 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
9974 (MAKE-LIST -1). In the longer term, it ought to become true
9975 that declarations are assertions even at SAFETY 1. For now, it's not
9976 quite true even at SAFETY 3, but it's at least more nearly true..
9977 (Note that this change seems to increases the size of the system by
9978 O(5%) and to decrease the speed of the compiler by 20% or more.)
9979 * changed ALIEN printing to be much more abbreviated, as a short-term fix
9980 for the problem of printing dozens of lines of distracting information
9981 about low-level system machinery as part of the top stack frame
9982 on entry to the debugger when an undefined function was called.
9983 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
9984 is not reset to COMMON-LISP-USER.
9985 * Compilation of stuff related to dyncount.lisp has been made conditional
9986 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
9987 smaller. The various dyncount-related symbols have been moved into
9988 a new "SB-DYNCOUNT" package.
9989 * tty-inspect.lisp has been renamed to inspect.lisp.
9990 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
9991 feature has gone away. (When we eventually port to other flavors of
9992 libc and/or Unix, we'll try to make the differences between flavors
9993 invisible at the user level.)
9994 * Various other *FEATURES* tags, and/or their associated conditionals,
9995 have been removed if obsolescent, or given better documentation, or
9996 sometimes given more-mnemonic names.
9998 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
10000 * tidied up "make.sh" script
10001 * tidied up system directory structure
10002 * better "clean.sh" behavior
10003 * added doc/FOR-CMUCL-DEVELOPERS
10004 * many many small tweaks to output format, e.g. removing possibly-confusing
10005 trailing #\. character in DESCRIBE-INSTANCE
10006 * (EQUALP #\A 'A) no longer signals an error.
10007 * new hashing code, including EQUALP hashing
10008 * tidied up Lisp initialization and toplevel
10009 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
10010 * command line argument processing
10011 * added POSIX-GETENV function to deal with Unix-ish environment variables
10012 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
10013 terminating SBCL on EOF
10014 * non-verbose GC by default
10015 * There is no more "sbcl" shell script; the sbcl file is now the C
10016 runtime executable (just like CMU CL).
10017 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
10019 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
10020 symbol and package information as Lisp native symbol and package objects
10021 instead of strings naming symbols and strings naming packages. This way,
10022 whenever packages are renamed (as in warm init), debug information is
10023 transformed along with everything else.
10024 * tweaked the optimization policy declarations which control the building
10025 of SBCL itself. Now, among other things, the system no longer saves
10026 source location debugging information. (This helps two problems at once
10027 by reducing SBCL size and by keeping SBCL from trying to look for its
10028 sources -- which may not exist -- when reporting errors.)
10029 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
10030 debugging and testing purposes
10031 * cleaned up printing, making the printer call PRINT-OBJECT for
10032 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
10033 methods, giving nearly-ANSI behavior
10034 * converted almost all special variables to use *FOO* naming convention
10035 * deleted PARSE-TIME functionality, since it can be done portably
10036 * moved some files out of cold init into warm init
10037 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
10038 with (VALUES) forms
10039 * regularized formatting of source files
10040 * added an install.sh script
10041 * fixed ridiculous memory usage of cross-compiler by making
10042 compiler/alloc.lisp not try to do pooling unless it can hook
10043 itself into the GC of the cross-compilation host. Now the system
10044 builds nicely on my old laptop.
10045 * added :SB-ALLOC in target-features.lisp-expr
10046 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
10047 was not implemented)
10048 * re-did condition handling and note reporting in the compiler. Notes
10049 are no longer handled by signalling conditions. Style warnings
10050 and warnings are handled more correctly and reported in such a way
10051 that it's easy to find one or the other in your output (so that you
10052 can e.g. figure out which of many problems caused COMPILE-FILE to
10054 * changed the severity of several compiler warnings from full WARNING
10055 to STYLE-WARNING in order to conform with the ANSI spec; also changed
10056 compiler note reporting so that it doesn't use the condition system
10057 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
10058 COMPILE-FILE command)
10059 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
10060 function. As a consequence, START-BLOCK and END-BLOCK declarations are
10061 no longer supported, since their implementation was deeply intertwingled
10062 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
10063 * removed bogus "support" for compiler macros named (SETF FOO), and
10064 removed the compiler macro for SETF INFO (but only after making a fool
10065 of myself on the cmucl-imp mailing list by posting a bogus patch for
10066 DEFINE-COMPILER-MACRO..)
10067 * Compiled files containing forms which have side effects on the Lisp
10068 reader (such as DEFPACKAGE forms) are now handled more correctly.
10069 (Compiler queuing of top level lambdas has been suppressed by setting
10070 *TOP-LEVEL-LAMBDA-MAX* to 0. )
10071 * deleted various currently-unused source files, e.g. gengc.lisp. They
10072 may be added back at some point e.g. when porting to other architectures,
10073 but until they are it's distracting to distribute them and to try to
10075 * deleted "UNCROSS couldn't recurse through.." style warnings, since
10076 there were so many of them they're just distractions, and UNCROSS is
10077 known to be able to handle the current sources
10078 * moved PROFILE functionality into TRACE, so that it will be clear
10079 how the wrapping and unwrapping of functions when you profile them
10080 interacts with the wrapping and unwrapping of functions when you
10081 trace them. (Actually, the functionality isn't there yet, but at least
10082 the interface specification is there. Hopefully, the functionality will
10083 arrive with some future maintenance release.)
10084 * removed host-oops.lisp
10085 * changed signature of QUIT function to allow UNIX-CODE argument
10086 * fixed READ-SEQUENCE bug
10087 * tweaked verbose GC output so that it looks more like the progress
10088 output that ANSI specifies for functions like LOAD
10089 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
10090 * added <http://sbcl.sourceforge.com> to the banner information printed by
10091 the sbcl executable