1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.3.17:
4 * enhancement: x86[-64] backends contain an experimental feature
5 which aids in demonstrating reachability of any object starting
6 from a tenured object or a thread stack by producing a proof
7 as a sequence of pointers to follow.
8 The file "tests/traceroot.test.sh" contains an example usage.
10 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
11 * enhancement: memory overhead from the garbage collector's metadata
12 is reduced on 64-bit architectures; no change for 32-bit.
13 * enhancement: further garbage collector speedups affecting
14 pinned objects on conservative backends, and simple-vectors.
15 * enhancement: on Linux a custom handler for SIGSEGV can be called
16 for page faults outside of dynamic space by changing the C symbol
17 "sbcl_fallback_sigsegv_handler".
18 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
19 * bug fix: random disassembler failures. (lp#1527931)
20 * The bundled sb-md5 contrib has been updated to release 2.0.4
21 which is licensed under Creative Commons CC0 per author's statement
22 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
23 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
25 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
26 * optimization: various small tweaks give around 5% faster garbage
28 * bug fix: better detection of when an impossible code path does
29 not need a warning. (lp#1668619)
30 * bug fix: stronger attempts to disable position-independent
31 executable building. (lp#1668986, patch from Mark Wright)
32 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
33 (lp#1674437, reported by Jan Idzikowski)
35 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
36 * minor incompatible change: the reader will when feasible create
37 new symbols using a BASE-STRING for the print name. Additionally,
38 string literals can favor the base-string type if desired, though
39 the default is to always return UTF-32 strings for compatibility.
40 A preference for base-string does not disable reading Unicode.
41 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
42 If Unicode was disabled at build time, this setting does nothing.
43 * enhancement: SBCL generates more debug information by default.
44 * enhancement: type errors provide context information, such as which
45 variable is being bound, which slot of which structure is being set.
46 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
47 enabled by default), then symbols will never be moved in memory
48 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
49 code generation as well as interaction with foreign routines.
50 This feature can only be enabled if #+immobile-space is enabled.
51 * enhancement: undefined function errors can be restarted on x86-64, to
52 either retry calling the function again or call a user supplied function.
53 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
54 addition to a lower bound.
55 * enhancement: #+immobile-code improves the speed of function calling.
56 Some delay may be noticed when redefining an existing function
57 from a saved core file however.
58 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
60 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
61 files to help with delivery of executables. (Thanks to François-René
63 * bug fix: data race in GENTEMP fixed - it can no longer return the
64 same interned symbol to multiple threads if called concurrently
65 * bug fix: interrupting LOADing of FASLs does not leave functions without
66 source locations. (lp#540276)
67 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
68 treated as if they were actually stack allocated (lp#1659964)
69 * bug fix: correctly handle the case of a non-local exit within a function
70 terminating the extent of dynamic-extent, dynamic-bound variables in the
71 presence of multiple-values (lp#1655011)
72 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
73 sb-eval and sb-fasteval) now actually pins objects on gencgc.
74 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
75 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
76 (directory "SOMETHING/**/MORE")
77 * bug fix: better console IO on Windows (lp#1660906)
79 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
80 * minor incompatible change: the SB-PCL walker no longer recognizes
81 macros expanding into a DECLARE expression. This is not a language change,
82 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
83 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
84 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
85 during macroexpansion point to the form that caused the problem more
87 * enhancement: the "--noinform" command-line option inhibits output from
88 save-lisp-and-die in addition to removing the startup banner.
89 * bug fix: PROCESS-KILL failed to return errno if the system call failed
90 * optimization: slightly more comprehensive treatment of the keyword
91 arguments to MAKE-ARRAY in compiler transformations.
93 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
94 * enhancement: SET triggers package locks on undefined variables.
96 * enhancement: new Windows specific option to run-program, :escape-arguments
98 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
99 CONSTANT where CONSTANT names a constant variable picks up the new value
100 of CONSTANT in case it has been redefined. (lp#1644944)
101 * optimization: faster TYPEP on undefined at compile-time types and upcoming
102 class definitions. (lp#1082967)
103 * optimization: memory consumption of each STANDARD-OBJECT instance is
104 reduced by 2 words if the compact-instance-header feature is enabled.
105 * optimization: CONDITION instances are quicker to allocate.
106 * optimization: unoptimized calls to FILL on specialized vectors are now
107 just as fast as T vectors.
108 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
109 * bug fix: cross reference information in fasls is no longer incompatible
110 between different cores (lp#1648186)
112 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
113 * enhancement: on x86-64, compiled functions loaded from fasl files
114 can not be moved, but can be freed, by GC. Additionally, COMPILE will
115 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
116 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
117 The benefits are better physical separation of code from data,
118 and potentially easier examination of live images by external tools.
119 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
120 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
121 depending on the platform.
122 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
123 redefining that same function could lead to execution of random bytes.
124 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
125 * bug fix: better handling of exceptions on macOS.
127 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
128 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
129 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
130 documentation string (based on patch by Patrick Stein)
131 * enhancement: support unboxed signed-word structure slots on x86, x86-64
132 and ARM64. (lp#377616)
133 * optimization: faster logical bit-array operations on multidimensional
135 * optimization: better GC performance in the presence of many threads.
136 (patch by Ilya Perminov, lp#1339924)
137 * optimization: multiple-value-call is optimized with multiple argument
138 forms, not just one. (lp#753803)
139 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
140 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
141 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
142 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
143 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
144 to a support mark-and-sweep as well as the traditional copying strategy.
145 It is conceivable that some applications might be adversely affected.
146 Please see ':immobile-space' in 'base-target-features.lisp-expr'
147 for further details, and possible reasons to disable this feature.
148 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
149 from 2 words to 1 word, reducing memory consumption in applications
150 which create many small structures.
152 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
153 * enhancement: more compact low-level error signaling code
154 * enhancement: more compact encoding of cross-reference information
155 * optimization: faster out of line fixnum-float comparisons.
156 * optimization: filling a known simple-vector with a constant value
157 is about as fast in unoptimized code as in code compiled with (SPEED 3),
158 and the x86-64 implementation is able to use SSE instructions.
159 * bug fix: correctly handle the case of a non-local exit within a function
160 terminating the extent of dynamic-extent functions and variables in the
161 presence of multiple-values (lp#1563127)
162 * bug fix: restore builds on the latest OSX with the latest Xcode
165 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
166 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
167 instead of (ARRAY CHARACTER (*)) when possible.
168 * enhancement: cached make-instance/allocate-instance constructors can now
169 get garbage collected.
170 * optimization: better performance for some unoptimized operations on
172 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
173 DEFPACKAGE form no longer signals a bogus error
175 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
176 * minor incompatible change: the system now understands that the CONDITION
177 type is disjoint with many other system types.
178 * minor incompatible change: argument types in condition report functions
179 are now declared (in combination with the above change, this can result in
180 early detection of erroneous code).
181 * enhancement: simple arrays of any rank can be stack-allocated
182 on platforms supporting stack allocation of vectors.
183 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
184 MISMATCH and other array and sequence functions.
185 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
186 * optimization: more efficient CHANGE-CLASS.
187 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
188 cause memory faults, and should work properly (lp#1603806, reported by
190 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
193 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
194 * bug fix: preserve the name of the destructive function for the destroyed
195 constant and important result warnings, even when declared NOTINLINE.
196 * optimization: faster operations on list-sets.
197 * optimization: better type derivation of set functions.
199 * optimization: load-time TLS-INDEX assignment, and other
200 microoptimizations, on x86.
206 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
208 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
209 * bug fix: do not insert conditional newlines in print-unreadable-object
210 (lp#1398290). This reverses a change made in lp#488979 which reversed
211 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
212 * bug fix: constant negative rotations of 32-bit quantities are compiled
213 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
216 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
217 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
218 * enhancement: speed up debug info creation for highly nested functions.
220 * enhancement: the interleaved structure slot optimization from
221 release 1.2.6 has been ported to all architectures.
222 * enhancement: support run-program I/O redirection into lisp streams on
224 * bug fix: better wording in missed optimization note. (lp#1003265)
225 * bug fix: interpreted (CAS SVREF) was broken
226 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
229 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
230 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
231 * enhancement: CONSTANTP understands backquote.
232 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
233 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
235 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
236 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
237 is less likely to cause confusion in the compiler.
238 * bug fix: DOCUMENTATION works as intended for classes with non-standard
240 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
241 returns NIL in certain situations
242 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
244 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
247 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
248 * enhancement: warn about argument mismatch for functions passed as
249 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
250 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
251 now be constant-folded if all function arguments are declared as foldable.
252 * optimization: improved logical operations on integers of unknown type.
253 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
255 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
256 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
257 of short sequences and stream types
258 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
259 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
261 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
262 arguments and small bit positions. (lp#1277690)
263 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
264 * bug fix: DEFUN of a function name that collides with a system-generated
265 structure accessor does not confuse the runtime. (lp#540063)
266 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
268 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
269 * enhancement: SB-THREAD support for ARM64.
270 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
271 will warn if a defaulted value is incompatible with its slot type.
272 * enhancement: a local INLINE declaration on a structure constructor
273 will work as intended, subject to any other factors that inhibit
274 inlining, even if the DEFSTRUCT was not itself within a global
275 INLINE proclamation for the named constructor
276 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
277 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
279 * enhancement: the interleaved structure slot optimization from
280 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
281 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
282 is made to join the current thread
283 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
284 * bug fix: structure constructor type checking is better. (lp#1508735)
285 * bug fix: supplied-p variables for unused optional or keyword variables no
286 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
287 backtrace machinery) (lp#1498644)
288 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
289 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
290 (fixes issues with floating-point type derivation in the compiler).
291 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
293 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
294 parsing negative-fixnum values for internal-error arguments and escaped
295 debug variables on 64-bit CPUs).
296 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
298 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
300 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
303 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
304 * minor incompatible change: the environment passed to a macro/setf/deftype
305 expander is not always an object of type SB-KERNEL:LEXENV.
306 It can be nil, as is permissible by the standard.
307 * enhancement: ported to ARM64 Linux.
308 * enhancement: a new interpreter is included which has many benefits
309 over sb-eval. It is disabled by default. See src/interpreter/README
310 for instructions to enable it, and further details.
311 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
312 would fail to perform "normal semantic processing such as macro expansion"
313 as stipulated by X3J13 issue LOAD-TIME-EVAL.
314 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
315 string as confusable. (lp#1504739)
316 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
317 if COMPUTE-IT was a local macro that shadowed a global function.
318 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
319 on platforms that use only the minimum specified set of fields in struct
320 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
321 very probably others). (partial fix for lp#1500951)
323 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
324 * enhancement: by default, timers with a repeat interval do not "catch up"
325 by repeatedly calling their function after a clock discontinuity such as a
326 suspend and resume cycle
327 * bug fix: correctly restore multiple values on the stack in the presence of
328 alien calls. (lp#1489590)
329 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
330 is a subtype of CHARACTER.
331 * bug fix: an EQL method specializer no longer causes garbage retention
332 if there are no extant methods using the specializer. (lp#492851)
334 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
335 * new feature: DEPRECATION declaration for functions, variables and types
336 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
337 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
338 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
339 section of the manual.
340 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
341 * enhancement: definitions within PROGN get proper source locations when
342 compiled (needs latest Slime to take advantage of this). (lp#1473147)
343 * enhancement: source locations for DEFCLASS slots now point directly to the
344 slot definitions, not the whole DEFCLASS form.
345 * bug fix: better source location in the presence of quoted forms.
347 * bug fix: better source locations inside backqoute. (lp#1361502)
348 * bug fix: HANDLER-BIND requires that the handler-function be
349 a function designator at the time of binding establishment. (lp#1480679)
350 * bug fix: inlined functions surrounded by nested macrolets are properly
353 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
354 * minor incompatible change: The name of a compiled anonymous lambda
355 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
356 a lambda-list-like list following the introductory LAMBDA that is not
357 in general a syntactically valid lambda list. Specifically, it won't
358 retain default values, supplied-p variables, or &KEY or &AUX bindings.
359 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
360 scratch to address a handful of performance and correctness issues.
361 Some minor behavioral differences exist regarding order of evaluation
362 of default forms for unsupplied &OPTIONAL and &KEY arguments
363 when nested destructuring patterns are involved.
364 (lp#707556, lp#707573, lp#707578, lp#708051)
365 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
367 * enhancement: sb-unicode:normalize-string has a new optional argument,
368 FILTER, a callback which controls which decomposed characters are
369 collected. Useful for stripping away diacritics more efficiently.
370 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
371 after a call of ADJUST-ARRAY. (lp#1333731)
372 * bug fix: Dynamic-extent allocation with a loop between allocating a value
373 and the start of its environment no longer discards the allocated data
374 when the loop is taken. (lp#1472785)
375 * bug fix: Variable-reference elimination no longer generates incorrect code
376 under certain circumstances. (lp#1446891)
377 * bug fix: variables with EQL types are no longer treated as constants by
378 VOPs, which caused problems with closures being allocated for such
379 variables, but they remained unused. (lp#1390149)
380 * bug fix: Windows installer generates registry key name
381 correctly. (lp#1476447)
383 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
384 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
386 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
387 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
389 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
390 printed. (lp#1437947)
391 * bug-fix: TRUENAME works properly on broken symlinks presented as
392 directories. (lp#1400003)
393 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
394 order of argument evaluation. (lp#1458190)
395 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
396 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
397 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
398 situations incorrectly return the result of a SLOT-MISSING method
399 instead of always returning the new value. (lp#1460381)
400 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
401 its lexical environment (thus being a closure) caused expressions
402 involving the macro name to cause corruption in the pretty-printer
403 due to faulty introspection of the lambda list of a closure.
404 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
405 function are of the matching sequence type. (lp#1459581)
406 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
408 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
409 * minor incompatible change: the SB-C::*POLICY* variable is no longer
410 a list. Code which manipulated it as such (including but not limited
411 to non-bundled releases of ASDF) will need to be revised.
412 * enhancement: The input stream for COMPILE-FILE implements
414 * enhancement: EVAL errors that occur by way of LOAD report the starting
415 line and column number of the erring toplevel form. (lp#565247)
416 * optimization: better MAP and MAP-INTO on known vector result types.
417 * bug fix: Read/modify/write macros accessing a place which is a
418 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
419 do not access subforms more than once. (lp#1450968)
420 * bug fix: short form of DEFSETF no longer allows trailing junk.
421 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
422 regarding argument evaluation order. (lp#1452539)
423 * bug fix: POP works as specified in CLHS if the setter for its
424 argument has a side-effect on the existing CAR value. (lp#1454021)
425 * bug fix: Reading "#()" with a positive numeric argument signals a
426 reader error. As specified, reading "#1()" has undefined consequences,
427 so correct portable code should be indifferent to this. (lp#1252100)
428 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
429 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
431 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
432 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
433 which any part is unrecognizable as a legal type-specifier.
434 The dispatch table will be altered, but the new entry is disabled.
435 Subsequent type-defining forms will cause pprint-dispatch tables to
436 re-examine whether any disabled entries should be enabled. (lp#1429520)
437 * enhancement: Loading code containing calls to a deprecated function will,
438 under most circumstances, signal warnings similar to compiling such code.
439 The usual caveat holds about not detecting calls through a computed name,
440 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
441 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
442 to a constant (VALUES integer integer) indicating the source line/column
443 from which it was read, intended for logging Lisp runtime errors in
444 a style similar to that afforded by the C preprocessor __LINE__ macro.
445 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
446 * enhancement: improved source locations for VOPs, alien types and
448 * bug fix: functions in :FINAL deprecation have the correct docstring.
449 No visible change, as no such functions presently exist. (lp#1439151)
450 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
451 if OTHER names either a macro or special-operator. (lp#1439921)
453 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
454 * minor incompatible change: all SOCKINT::WIN32-* functions have been
455 deprecated with EARLY deprecation state
456 * minor incompatible change: performing introspection via the system-internal
457 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
458 a function, as it always was before. (Affects swank-fancy-inspector)
459 * enhancement: The value of SXHASH on bit-vectors of length equal to the
460 word size now depends on the vector's contents instead of being constant;
461 its value on bit-vectors of length divisible by the word size now depends
462 also on the contents of the vector's last word.
463 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
465 * bug fix: A new dead code elimination phase removes dead code loops
466 that confuse stack analysis. (lp#1255782, lp#308914)
467 * bug fix: A toplevel form which was simple enough to bypass the main
468 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
469 would produce an invalid fasl file. (lp#1427050)
470 * bug fix: The compiler no longer signals an internal error when
471 encountering invalid FUNCTION forms like (function 1)
472 * bug fix: express proper dependencies in the ASDF contrib, to support
473 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
476 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
477 * minor incompatible change and bug fix: unboxed numeric constants
478 on x86oids are arranged in memory differently, and the disassembler
479 does not show them separately in DISASSEMBLE, but does
480 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
481 * optimization: The compiler's treatment of type specifiers makes
482 it slightly faster and more memory-efficient. Portable code
483 should be indifferent to this change, however, users of
484 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
485 and (MEMBER NIL T) are both internally collapsed to the former,
486 so that the latter can never be obtained as part of an FTYPE.
487 * optimization: a TYPEP call in which the second argument is not a
488 QUOTE form but nevertheless recognized as a compile-time constant
489 might open-code the test. One scenario for this involves backquote,
490 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
491 deferring until runtime should declare (NOTINLINE TYPEP).
492 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
493 code requiring delayed evaluation could be unportable though.]
494 * enhancement: unused variables at the top-level are now reported.
496 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
498 * bug fix: compiler no longer signals an error when compiling certain
499 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
500 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
501 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
502 lp#1412881, lp#945261, lp#1419205, lp#1409402)
503 * bug fix: files larger than 4GB can now be compiled.
504 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
505 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
506 * bug fix: callbacks from foreign threads can work without enabling
508 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
510 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
511 * bug fix: compiler no longer fails to dump a multidimensional array
512 constant involving a circular reference to itself
513 * bug fix: conditional and nested DX allocation no longer confuse the
514 compiler in STACK analysis. (lp#1044465)
515 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
517 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
518 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
519 * enhancement: backtrace for invalid argument count produces the exact
520 supplied arguments including the extra ones, on x86, x86-64 and ARM.
521 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
522 are used before the structure is defined; similarly for the predicate.
523 * optimization: FORMAT NIL with only ~a and string arguments is transformed
525 * optimization: POSITION and FIND when inlined into code that is compiled
526 with qualities of safety < 2 and speed > space will no longer signal
527 an error on circular lists, but will potentially loop forever if given
528 no :END constraint. As was always the case, calls that are not inlined
529 are safe regardless of lexical policy.
530 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
531 no longer cause debugger failure when printing a backtrace
532 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
533 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
534 did not work, and now it does.
536 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
537 * optimization: returning constant values refers to preboxed constants
538 more reliably. (lp#1398785)
539 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
540 for a function after at least one ordinary (not inlined) call to that
541 function was compiled, indicating a likely compilation order problem.
542 Likewise a warning ensues if a call is compiled to a function
543 that is subsequently proclaimed INLINE.
544 * enhancement: always lose() when something goes wrong while saving a core
545 (instead of just printing an error on stderr in some situations).
546 * enhancement: frames in the debugger are now restartable by default.
547 * bug fix: restore error handling on Windows x86.
548 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
549 at compile-time when possible. (lp#330299)
550 * bug fix: parsing of malformed type specifiers no longer results
551 in a memory-fault-error.
552 * bug fix: LOOP properly destructures nested lists in WITH.
553 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
554 longer signals the wrong error.
555 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
557 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
558 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
559 select() if the OS has the former. Previously poll() was used
560 only if waiting on exactly one file descriptor.
561 * enhancement: efficiency of access to untagged structure slots is improved
562 on x86-64, and the order of slots in memory is exactly as specified by
563 defstruct, simplifying use of structures as arguments to foreign calls.
564 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
566 * bug fix: GC memory corruption during internal memory handling.
567 * bug fix: duplicate effective-slot-definition objects as compared
568 by EQ on name could be present in CLASS-SLOTS of a class whose
569 metaclass was structure-class or condition-class. (lp#1049423)
570 * bug fix: HANDLER-BIND with empty bindings works again; regression in
572 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
574 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
575 (member #\a #\c). (lp#1392068)
576 * bug fix: READ sometimes accidentally preserved a whitespace character
577 after a token when it should not have. (lp#327790)
579 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
580 * enhancement: sb-bsd-sockets now has basic support for IPv6
581 * enhancement: An sb-unicode package has been added, containing
582 many functions related to handling Unicode text
583 * enhancement: The reader now normalizes symbols to Normalization
584 Form KC (NFKC). This behavior can be disabled with
585 SB-EXT:READTABLE-NORMALIZATION
586 * enhancement: a style-warning is signaled if OPTIMIZE declarations
587 multiply specify a quality with differing values. (lp#310267)
588 * bug fix: conservatively pointed to pages wipe out unused dwords so
589 that they cannot act as false roots in turn.
590 * bug fix: the walker's handling of lexical variable and symbol-macro
591 bindings is improved (lp#375326, lp#1368305)
592 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
593 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
594 * bug fix: in interpreted code, inequality predicates did not type-check
595 arguments that weren't examined, and a 1-argument use of MIN or MAX
596 accepted a complex number. (lp#1373702)
597 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
598 (lp#1364413, thanks to Zach Beane)
600 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
601 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
602 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
603 SEQUENCE:MERGE respectively when the specified result type designates an
605 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
607 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
608 universal superclass (lp#1332983)
609 * bug fix: reading an uninterned symbol whose print name has the
610 syntax of an integer signals an error. (lp#310062)
611 * bug fix: the walker is less likely to be confused when walking LET* forms
612 with special bindings and use of those bindings and others of the same
614 * bug fix: a rare bug affecting 32-bit platforms resulting in a
615 fatal condition with the message "Globaldb rehash failure" has been fixed.
617 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
618 * enhancement: DOCUMENTATION works on instances of
619 FUNCALLABLE-STANDARD-CLASS
620 * enhancement: ASSERT reports arguments of calls to lexical functions in
621 additional to global functions.
622 * enhancement: ASDF updated to 3.1.3
623 * enhancement: UIOP can be loaded without ASDF.
624 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
625 before accessing its class-precedence list.
626 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
628 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
629 class is a FORWARD-REFERENCED-CLASS.
630 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
631 which initargs have been supplied.
632 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
634 * bug fix: macroexpanding a backquoted expression involving ",."
635 outside of the compiler failed. (lp#1354623)
637 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
638 * incompatible change: the #\` ("backquote") reader macro was reimplemented
639 to support robust pretty-printing. Reading a form involving #\` produces
640 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
641 that are not lists. Code that unportably attempts operations on
642 un-evaluated forms resulting therefrom, e.g.
643 (SUBST a b (read-from-string "`(x (,y))"))
644 might generate incorrect results and/or errors.
645 * enhancement: support for GNU/kFreeBSD x86.
646 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
647 and DEFGLOBAL variables of type fixnum.
648 * enhancement: arithmetic constant reduction is now performed on defconstant
649 constants too. (lp#1337069).
650 * bug fix: certain ftype proclamations containing &optional t &rest t no
651 longer cause subsequent definitions to signal bogus style-warnings.
652 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
653 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
656 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
657 * enhancement: GENCGC is enabled on ARM.
658 * enhancement: better error reporting for invalid calls to local functions.
659 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
661 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
663 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
665 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
667 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
668 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
669 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
671 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
672 lp#700538, lp#613876, lp#695286, lp#798388)
673 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
674 * bug fix: array type intersection handles T and unknown element types
675 correctly. (lp#1258716)
676 * bug fix: fix a corner case in array type unparsing that would result in
677 misleading translations from our internal type representation.
678 * bug fix: array-rank now sees through union and intersection types.
680 * bug fix: when DECLARE expressions are in the wrong place, be careful not
681 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
683 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
684 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
685 instead of signaling an error. (lp#1095483)
686 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
687 used to (rarely) introduce duplicate conflict markers in a single
688 TN/block pair. (lp#1327008)
690 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
691 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
692 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
693 report of the signaled conditions lists currently running threads.
694 * enhancement: ported to ARM linux.
695 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
696 * enhancement: new contrib sb-mpfr by Stephan Frank.
697 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
698 (lp#1315846, thanks to Mark Cox)
699 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
700 function-designator to a function only as needed. (lp#1012335)
701 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
702 thanks to Thomas Hlavaty)
703 * bug fix: handle --without-xxx options to make.sh more carefully.
704 (lp#1246665, thanks to Richard M Kreuter)
705 * bug fix: prevent maybe-delete-exit from doing semantically broken things
706 with local exits. (lp#309099, lp#518099, lp#533930)
707 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
710 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
711 * optimization: COERCE is now more effecient for more cases when the type is
712 known at compile-time.
714 * bug fix: correctly inherit condition initforms. (lp#1300904)
715 * bug fix: properly pprint literal functions inside nested lists.
717 * bug fix: more-correctly handle array-type unity (broken for ages, causing
718 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
719 reported by jasom in #lisp).
721 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
722 * enhancement: printing backtraces respects
723 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
725 * optimization: defstruct out-of-line accessor are now as fast as inlined.
727 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
728 instances with a test-function (reported by Vivitron in #sbcl)
729 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
730 * bug fix: Change COND error message (lp#1254511)
731 * bug fix: LOAD is no longer confused when called on a directory.
733 * bug fix: MAKE-CONDITION reports names of missing condition classes
734 properly (lp#1199223)
735 * bug fix: restore building with clang. (lp#1293643)
736 * bug fix: restore building on SPARC (broken since 1.1.15).
737 * bug fix: improved FreeBSD support.
738 * bug fix: PPC floating point conversion corrupted stack.
740 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
741 * minor incompatible change: improve read/print consistency for pathnames on
742 Win32, by using the circumflex character #\^ as the escape character.
744 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
745 * enhancement: Loading fasls with symbols from an undefined package includes
746 the name of the symbol in the error message.
747 * bug fix: problems when redefining classes and doing TYPEP on classes
748 concurrently. (lp#1272742)
749 * bug fixes to the x86-64 XCHG instruction:
750 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
752 ** it was misencoded when used to exchange EAX with itself.
753 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
754 32- and 16-bit variations as NOP.
755 * bug fix: the disassembler outputs source annotations in the right place
756 and no longer randomly drops some of them. (lp#1249205)
757 * bug fix: fix commutative-arg-swap from introducing undumpable structures
758 into code, prevent code with errors from being compiled. (lp#1276282)
759 * bug fix: pathnames with :back in their directory component are succeffully
761 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
762 wrap functions around. (lp#309086)
764 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
765 * new feature: the iterative spilling/coloring register allocator developed
766 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
767 in. By default, it only activates for functions that optimize with
768 (speed 3) and (> speed compilation-speed), but setting
769 sb-regalloc:*register-allocation-method* to :iterative forces its
770 execution. The previous behaviour can be obtained by instead setting that
771 variable to :greedy. Thanks again to Google for their support, and, more
772 crucially, to Alexandra Barchunova for her hard work.
773 * optimization: make-array with known element-type and unknown dimensions is
775 * optimization: make-array with unknown element-type is faster as well.
777 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
778 :application-type argument, which can be :console or :gui. :gui allows
779 having GUI applications without an automatically appearing console window.
780 * enhancement: reduced conservativism on GENCGC platforms:
781 conservative roots must be valid-looking tagged pointers or point
782 within a code object, not merely point to within the allocated part
783 of a page, in order to pin a page.
784 * enhancement: support for "Mac Roman" external format.
785 * enhancement: encapsulation of named generic functions now happens without
786 altering the identity of the function bound to the name.
787 * bug fix: Windows applications without the console window no longer misbehave.
788 (patch by Wilfredo Velazquez, lp#1256034).
789 * bug fix: modular arithmetic optimizations do not stumble on dead branches
790 with bad constants. (reported by Douglas Katzman)
791 * bug fix: CLISP can be used again as a cross-compilation host.
792 (Thanks to Vasily Postnicov, lp#1261451)
793 * bug fix: run-program crashed with :directory nil. (lp#1265077)
795 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
796 * optimization: complicated TYPEP tests are less opaque to the type
797 propagation pass. (lp#1229340)
798 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
799 * optimization: EQUALP on structures with raw slots (double-float/complex)
800 no longer conses and is faster.
801 * optimization: RESTART-CASE expands to more compact code.
802 Thanks to Jan Moringen. (lp#1249055)
803 * enhancement: Top-level defmethod without defgeneric no longer causes
804 undefined-function warnings in subsequent forms. (lp#503095)
805 * enhancement: Better error messages for system errors on Windows.
806 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
807 Cushing. (lp#1249183)
808 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
809 specification (multiple integer arguments) and signals a continuable error
810 if the current SBCL version is lower (older) than the specification.
812 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
813 * bug fix: EQUALP now compares correctly structures with raw slots larger
815 * bug fix: contribs couldn't be built on Windows with MinGW.
816 * bug fix: Better pathname handling on Windows. (lp#922117)
817 * bug fix: OPEN reports a more meaningful error when an existing file is
818 opened for output with :if-exists :new-version. Thanks to Philip
819 Munksgaard. (lp#455381)
820 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
821 CLOS-related errors. (lp#633911)
822 * bug fix: GC deadlocks caused by concurrent consing on Windows.
824 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
825 * optimization: better distribution of SXHASH over small conses of related
827 * other improvements to SXHASH:
828 ** use the whole of the positive-fixnum range for SXHASH of fixnums
829 * enhancement: The error message when calling an undefined alien function
830 includes the name of the function on x86-64.
831 * enhancement: sb-ext:run-program now supports :environment on Windows.
832 * enhancement: ASDF is no longer required to load contribs at runtime.
834 * enhancement: when called with a symbol, FIND-RESTART no longer calls
835 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
836 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
837 clusters better in some cases
838 * enhancement: SOME/ANY/other quantification higher-order functions no
839 longer cons. (lp#1070635)
840 * bug fix: forward references to classes in fasls can now be loaded.
842 * bug fix: don't warn on a interpreted->compiled function redefinition
843 from the same location. (patch by Douglas Katzman, lp#1042405)
844 * bug fix: Create vectors of proper internal length when reading literal
845 vectors from FASLs. (Reported by Jan Moringen)
846 * bug fix: COMPILE can now successfully compile setf functions.
847 (Reported by Douglas Katzman)
848 * bug fix: run-program performs more correct escaping of arguments on
849 Windows. (lp#1239242)
850 * bug fix: function-lambda-expression on generic functions returns the
852 * bug fix: (the [type] [constant]) now warns when [constant] matches
853 [type] except for the number of values. (Reported by Nathan Trapuzzano
855 * bug fix: signal errors in required cases of slot-definition initialization
856 protocol. (lp#309072)
857 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
858 (thanks to Stelian Ionescu, lp#1242643)
859 * bug fix: when given a restart object, FIND-RESTART checks whether the
860 restart is active and, when a condition is supplied, whether the restart
861 is associated to a different condition (lp#774410)
863 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
864 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
865 shutdown(3). (thanks to Jan Moringen, lp#1207483)
866 * enhancement: document extensible sequences. (thanks to Jan Moringen,
868 * optimization: EQUAL and EQUALP transforms are smarter.
869 (thanks to Elias Martenson, lp#1220084)
870 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
871 * bug fix: probe-file now can access symlinks to pipes and sockets in
872 /proc/pid/fd on Linux. (reported by Eric Schulte)
873 * bug fix: SBCL can now be built on Solaris x86-64.
874 * bug fix: Floating point exceptions do not persist on Solaris anymore.
875 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
876 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
878 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
879 (thanks to Stephan Frank)
880 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
881 (thanks to Stephan Frank, lp#1206191)
882 * bug fix: sb-safepoint can now reliably handle signal interruptions of
883 foreign code. (lp#1133018)
884 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
885 constructors no longer fails to merge actual and default initargs
886 (thanks to Jan Moringen, lp#1179858)
887 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
888 constructors handles non-KEYWORD initialization arguments more correctly.
889 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
890 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
891 * bug fix: class definitions with CPLs inconsistent with their metaclasses
892 are less likely to destroy the object system's integrity. (lp#309076)
893 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
894 standard. (lp#1203585, thanks to Jan Moringen)
895 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
896 settings. (lp#1023721)
897 * bug fix: getting the order of arguments to
898 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
899 rather than a failed AVER. (reported by Paul Nathan)
900 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
901 arguments during copying on x86 and x86-64; it may still happen on other
902 platforms when there are more fixed arguments than stack slots.
903 (reported by Jan Moringen)
905 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
906 * enhancement: support building the manual under texinfo version 5.
908 * enhancement: Windows builds no longer display the "Kitten of Death" message.
909 A warning is instead appended to the regular banner, and may be muted with
910 --noinform. (lp#728247)
911 * enhancement: support building under new linker handling of syscalls under
912 NetBSD. (thanks to Robert Swindells)
913 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
914 (regression since 1.1.9)
915 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
916 compiler macro. (thanks to Douglas Katzman).
917 * bug fix: signal a warning when defining a setf-function when a
918 setf-expander is already present. (thanks to Douglas Katzman).
919 * bug fix: improved threading on PPC.
920 * bug fix: ROOM works again on Windows. (lp#1206456)
921 * bug fix: Streams were flushed even when there was one byte still left in
922 the buffer. (lp#910213)
923 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
924 either NIL or :ERROR. (reported by Jan Moringen)
926 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
927 * enhancement: ASDF has been updated to 3.0.2.
928 * optimization: stack frames are packed more efficiently on x86oids, which
929 ought to reduce the frequency of Methuselahn conservative references (it
930 certainly helps with gc.impure.lisp / BUG-936304 on x86).
931 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
932 recognized in modular arithmetic contexts, and compile to native negate,
933 rather than going through bignums only to keep the low bits.
934 * bug fix: Compiling potential modularic arithmetic forms does not cause type
935 errors when some integer types lack lower or upper bounds. (lp#1199127)
936 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
937 bitwidth before being used in a non-modular context. (lp#1199428)
938 * bug fix: Multiple catch/unwind blocks in a single function are now
939 allocated in the right stack order on win32. (lp#1072739)
941 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
942 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
943 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
944 * enhancement: disassemble now annotates some previously missing static
945 functions, like LENGTH.
946 * enhancement: clean.sh now also cleans doc/internals.
947 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
948 print a symbol with a package prefix.
949 * enhancement: The debugger and backtracing are more robust against buggy
950 PRINT-OBJECT methods.
951 * optimization: calls to static functions on x86-64 use less instructions.
952 * optimization: compute encode-universal-time at compile time when possible.
953 * optimization: when referencing internal functions as #'x, don't go through
954 an indirect fdefn structure.
955 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
956 * optimization: (mod fixnum) type-checks are performed using one unsigned
957 comparison, instead of two.
958 * optimization: enable more modular arithmetic transforms in the presence of
960 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
961 when the result is known to be negative.
962 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
963 * optimization: comparisons between rationals and constant floats or between
964 integers and constant ratios are now converted to rationals/integers at
966 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
967 * bug fix: problems with NCONC type derivation (reported by Jerry James).
968 * bug fix: EXPT type derivation no longer constructs bogus floating-point
969 types. (reported by Vsevolod Dyomkin)
970 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
971 addrinfo. (lp#1187041, patch by Jerry James)
972 * bug fix: uninitialized type-error conditions can now be printed.
974 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
975 listening, allowing several tests to run in parallel.
976 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
977 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
979 * bug fix: Specialised SIMD-PACK types can be negated.
980 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
981 reported by Eric Marsden)
982 * bug fix: FP return values from foreign calls are always rounded to single
983 or double float precision on x87.
984 * bug fix: Known-safe vector access on x86oids should not fail spuriously
985 when the index is of the form (+ x constant-positive-integer).
986 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
987 * bug fix: backtrace printer no longer tries to create very large lists when
988 the arg-count register is clobberred by other code. (lp#1192929)
989 * bug fix: x86 should never signal an FP exception while boxing an FP value,
990 a situation that lands us into ldb.
992 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
993 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
994 ROOM, plus a few SB-INTROSPECT functions) has been completely
995 rewritten; it may now exhibit different bugs than before.
996 * new feature: minimal runtime/compiler intrastructure support for SSE
997 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
998 feature :sb-simd-pack. This should enable intrinsics extensions as
999 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1000 for maintaining a branch for so long.
1001 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1002 the working directory of the spawned process.
1003 (lp#791800) (patch by Matthias Benkard)
1004 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1005 stack-allocated on PPC.
1006 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1007 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1008 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1009 also returns VOPs which do not translate any functions, and finds
1010 defoptimizer types ir2convert and stack-allocate-result.
1011 * enhancement: better type derivation for APPEND, NCONC, LIST.
1013 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1014 heap in a manner similar to the GC rather than its previous ad-hoc
1015 scheme, and is therefore no less and possibly more accurate.
1016 * fixes and enhancements related to Unicode:
1017 ** the character database information has been updated to Unicode 6.2;
1018 ** support for canonical and compatibility decomposition of characters has
1019 been added, along with support for primary composition;
1020 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1021 NFKD) has been included;
1022 ** querying the character database for code points not defined by Unicode
1023 gives less wrong answers (lp#1178038, reported by Ken Harris)
1024 * enhancement: print intermediate evaluation results for some ASSERTed
1025 expressions. (lp#789497) (patch by Alexandra Barchunova)
1026 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1027 values when there are references to (RIP-relative) unboxed constants.
1028 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1029 of quadratically with the size of the input in the worst case.
1031 * bug fix: handle errors when initializing *default-pathname-defaults*,
1032 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1033 decoding errors, or directories being deleted.
1034 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1035 computes the amount of dynamic space used.
1036 * bug fix: disassembler missing ",8" on SHLD
1037 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1038 that provide an "invalid" stack frame link for the signal handler
1039 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1040 frame in the interrupt (signal) context. This is known to affect
1041 threaded FreeBSD/x86-64.
1042 * bug fix: some LOOP statements couldn't be compiled.
1044 * bug fix: sb-sequence:dosequence works on literal vectors.
1045 * bug fix: errors in generic arithmetic show the assembly routine's
1046 caller on x86 and x86-64. (lp#800343)
1047 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1048 failure. (lp#943953)
1049 * bug fix: Known bad local calls do not cause strange failures when
1050 emitting or dumping code. (lp#504121)
1051 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1052 codegen errors: type checks are inserted as necessary. (lp#1177703)
1053 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1054 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1055 * bug fix: a combination of inlined local function with &optional and
1056 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1057 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1058 when testing for non-zero-ness.
1059 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1061 * bug fix: Type mismatch for the value of conditional expressions are
1062 correctly reported when detected at compile-time, instead of complaining
1063 about a constant NIL (similar for non-EQ-comparable catch tags).
1064 * bug fix: Referring to INLINE global functions as values should not result
1065 in a compilation failure. (lp#1035721)
1066 * optimization: faster ISQRT on fixnums and small bignums
1067 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1068 * optimization: On x86-64, the number of multi-byte NOP instructions used
1069 for code alignment is now always minimal.
1070 * optimization: On 64-bit targets, the compiler generates much faster
1071 code for type checks for types known at compile time that are smaller
1072 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1073 their COMPLEX variants.
1074 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1075 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1076 * optimization: ROOM no longer conses so egregiously on non-x86oid
1078 * optimization: associative bitwise operations reassociate patterns like
1079 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1081 * optimization: quasiquote expressions now perform more constant folding,
1082 instead of consing equal lists at runtime. (lp#1026439)
1083 * optimization: local call analysis of inlined higher-order function
1084 should converge more quickly, resulting in better code for complex
1086 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1087 integer constants are handled more cleverly, especially when they
1088 can be represented as sign-extended (signed-byte 32). (Based on a
1089 patch by Douglas Katzman)
1090 * optimization: IF/IF conversion should reliably result in sane code
1091 when (some of) the results of the inner IF are always false or
1093 * optimization: On x86oids, variable right shifts of machine words are
1094 compiled into straight SAR/SHR, instead of going through the generic
1097 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1098 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1100 * bug fix: :allocation slot option works for condition slots
1102 * bug fix: redefining conditions does not lead to multiple evaluations of
1103 hairy slot initfunctions anymore (lp#1164969)
1104 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1106 * bug fix: function constants now work as initforms and default initarg
1107 values of conditions (lp#539517)
1108 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1109 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1110 * bug fix: no more bogus ## references when pretty printing backquoted
1111 forms with non-trivial structure sharing. (lp#1161218)
1112 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1113 "doc"). Signal a style-warning instead when trying to set documentation
1114 of NIL for all other documentation types. (Reported by Zach
1115 Beane; regression since 2e52fa05.)
1116 * bug fix: modular arithmetic involving large constants and conditionals
1117 should no longer result in spurious dead code elimination. (Reported by
1119 * bug fix: our mach exception handler can seemingly called very early in
1120 the program execution process on OS X 10.8.0. Try and handle that case
1121 robustly, without potentially leaking mach ports too much.
1122 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1124 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1125 * enhancement: the continuable error when defknown-ing over extant
1126 fndb entries can be ignored by passing :overwrite-fndb-silently t
1127 as a keyword argument to sb-c:defknown (after attributes). Useful
1128 to allow defknown to be re-loaded. Use with :allow-other-keys t
1129 for backward compatibility.
1130 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1132 * bug fix: Prevent a make-array transform from modifying source forms
1133 causing problems for inlined code. Thanks to Bart Botta.
1134 (regression since 1.0.42.11-bis)
1135 * bug fix: clear-output calls the correct gray stream routine,
1136 sb-gray:stream-clear-output. (lp#1153257)
1137 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1139 * bug fix: Better error messages for package operations (lp#1154776)
1140 * bug fix: delete-package on a nonexistent package should signal a cerror.
1141 (regression since 1.0.37.44).
1142 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1143 (lp#1154946, lp#1072112)
1144 * bug fix: compiling make-array no longer signals an error when the
1145 element-type is an uknown type, a warning is issued instead.
1146 Thanks to James Kalenius (lp#1156095)
1147 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1148 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1151 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1152 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1154 * new feature: package local nicknames. See manual for details.
1155 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1156 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1157 * enhancement: easier to use restarts for resolving name-conflicts
1158 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1159 * enhancement: variant DEFPACKAGE forms now signal a full error with
1160 restarts provided for resolving the situation. (lp#891351)
1161 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1162 DEFPACKAGE forms can now signal a full error with restarts provided for
1163 resolving the situation. See manual for details. (lp#891351)
1164 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1165 (Thanks to Anton Kovalenko.) (lp#1102748)
1166 * enhancement: backtrace improvements
1167 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1168 ** easier to read method names in backtraces. See
1169 SB-DEBUG:*METHOD-FRAME-STYLE*.
1170 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1171 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1172 SB-DEBUG:BACKTRACE-AS-LIST.
1173 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1174 information is available in less intrusive form as frame annotations.
1175 * enhancement: SB-POSIX now provides MAP-ANON.
1176 * enhancement: test-suite results are colorized, failures in red, unexpected
1177 success in green. Works on Windows and on terminals with ANSI escape code
1178 support. Can be disabled with --no-color.
1179 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1180 (thanks to James M. Lawrence)
1181 * bug fix: no more unused variable style warnings from RESTART-CASE
1182 macroexpansion (lp#1113859)
1183 * bug fix: no more unused variable style warnings when loading
1184 sb-bsd-sockets.asd (lp#1114681)
1185 * bug fix: deleting a package removes it from implementation-package
1186 lists of other packages.
1187 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1188 This does not fix the occasional "interrupt already pending" issue, though.
1189 * bug fix: (setf (documentation 'x 'function)) and
1190 (setf (documentation #'x t)) set documentation in different places.
1191 (regression since 1.0.43.63)
1192 * bug fix: build on newer glibc. (lp#1095036)
1194 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1195 * optimization: LOOP expressions using "of-type character" have slightly
1196 more efficient expansions.
1197 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1198 in very long compile times or heap exhaustion anymore. (lp#1095488)
1199 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1200 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1202 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1203 longer cause infinite loops (on circular data) or violate eqlity
1204 constraints. (lp#1099708)
1205 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1207 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1208 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1210 * enhancement: support for C-c to interrupt the foreground thread
1211 on Windows. (Thanks to Anton Kovalenko.)
1212 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1213 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1214 built without pseudo-atomic sequences and their run-time overhead.
1215 * enhancement: Threads created outside of Lisp can enter Lisp through
1216 alien callbacks and appear as Lisp threads for the duration of that
1217 function invocation. On safepoint builds only.
1218 * enhancement: Miscellaneous improvements to namestrings and underlying
1219 calls to OS functions for file system access on Windows. (Thanks to
1221 * enhancement: The MSI installer support for Windows now uses Windows
1222 Installer XML at least version 3.5 and includes various usability
1223 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1224 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1225 on Windows. (Thanks to Anton Kovalenko.)
1226 * enhancement: The Windows backend now supports the x86-64 platform.
1227 (Thanks to Anton Kovalenko.)
1228 * bug fix: fasls are now once again directly executable (on platforms
1229 supporting shebang lines, with a suitably-installed sbcl).
1230 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1231 * bug fix: Fix CAS access to slots of direct instances of structure classes
1232 in the presence of subclasses sharing the same conc-name.
1233 * bug fix: Logical pathname namestrings on Windows have been changed to
1234 be lower-case, to minimize differences between POSIX and Windows.
1236 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1237 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1238 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1239 (NT 5.0) is no longer being maintained.
1240 * notice: Starting with this version, SBCL on Windows no longer supports
1241 building with disabled thread support.
1242 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1243 * enhancement: New feature sb-dynamic-core allows the runtime to be
1244 rebuilt or relocated without requiring changes to the core file on
1245 all linkage table platforms. Required on Windows. (Thanks to Anton
1247 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1248 * enhancement: I/O on Windows unnamed pipes is interruptible
1249 asynchronously using interrupt-thread, timers when running on Windows NT
1250 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1252 * enhancement: Support for the experimental safepoint-based stop-the-world
1253 protocol on the PowerPC platform.
1254 * bug fix: Non-blocking reads from the Windows console were not necessarily
1255 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1256 * bug fix: stability of threads on Windows has been improved upon through
1257 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1259 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1260 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1261 (COMPILE and COMPILE-FILE still do.)
1262 * optimization: the SPARC backend now supports the precise generational
1263 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1264 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1265 * enhancement: add experimental support for the SB-THREAD feature and the
1266 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1267 Threads are enabled by default, and this version of SBCL is considered
1268 to be the last and final release to officially support building with
1270 * optimization: The compiler no longer rotates loops in some cases where
1271 this transformation actually lead to worse code being generated.
1272 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1273 symbol-macros by lexical bindings.
1274 * bug fix: stack allocation was prevented by high DEBUG declaration in
1276 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1277 (thanks to SANO Masatoshi)
1278 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1279 :JUNK-ALLOWED was true.
1280 * bug fix: type derivation inferred overly conservative types for
1281 unions of array types. (lp#1050768)
1283 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1284 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1285 source annotation of DISASSEMBLE output. Defaults to T.
1286 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1287 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1288 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1290 * enhancement: Optional features (not enabled by default) allow the
1291 use of signals for inter-thread synchronization to be reduced on certain
1292 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1293 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1294 to test these experimental features. Known remaining bugs include minor
1295 thread safety issues, less timely freeing of memory by GC, and certain
1296 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1297 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1298 comparisons, particularly on almost-sorted inputs.
1299 * bug fix: Reading floats with large exponents no longer takes too much time
1300 before reporting that the exponent is too large.
1301 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1302 correctly when the received datagram is larger than the provided buffer.
1303 (lp#1023438, thanks to Robert Uhl)
1304 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1305 a SYMBOL-VALUE form with a constant symbol argument.
1306 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1307 into a DEFCAS defined place was used as the place.
1308 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1309 for from bit-vectors.
1310 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1311 lead to internal errors or crashes (lp#1058799).
1312 * documentation: a section on random number generation has been added to the
1315 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1316 * enhancement: implicit generic function warnings now specify the package
1317 in which the new generic function is being created.
1318 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1319 updates of CAS-able places (similar to Clojure's swap!).
1320 * enhancement: run-program no longer decodes and re-encodes environment when
1321 :environment argument is not provided. (lp#985904)
1322 * enhancement: errors during compiler-macro expansion no longer cause
1323 runtime errors, only a compile-time warning, otherwise behaving as if
1324 the compiler macro had declined to expand.
1325 * optimization: On x86-64, code alignment of block headers is done with
1326 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1327 * optimization: MAP-INTO is substantially faster when the target sequence is
1328 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1329 thanks to James M. Lawrence)
1330 * optimization: the compiler no longer heap-conses to check exits in cases
1331 where the exit function is dynamic extent, or when it can prove the exit
1332 function cannot escape. (lp#1002534)
1333 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1334 element type, and vectors that aren't SIMPLE-ARRAYs.
1335 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1336 speed (around 1/3 the time in some cases), and a little better in terms of
1337 comparison calls. (Thanks to Takeru Ohta)
1338 * bug fix: On SPARC, a limitation on the number of code constants emittable
1339 by the compiler has been lifted, allowing certain long functions to
1340 compiled and assembled which had previously been unsupported; fixes
1341 cl-bench on this ISA (lp#1008996).
1342 * bug fix: potential for infinite recursion during compilation of CLOS slot
1343 typechecks when dependency graph had loops. (lp#1001799)
1344 * bug fix: error forms reported with some program-errors were not escaped
1346 * bug fix: functions from EVAL are now on more equal footing with functions
1347 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1348 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1349 objects as its :METHOD-COMBINATION argument, not just lists designating
1350 method combinations. (lp#936513)
1351 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1353 * bug fix: restore build on solaris/sparc. (lp#1008506)
1354 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1355 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1356 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1357 as keyword arguments no longer accidentally match unevaluated symbols
1359 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1360 parameter was zero, now it signals an error. (lp#905817, fixed since
1362 * bug fix: run-program with :pty t no longer makes the pty as the process's
1363 controling terminal.
1364 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1367 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1368 * RANDOM enhancements and bug fixes:
1369 ** bug fix: the range and distribution of random integers could be
1370 catastrophically wrong when the compiler derived the type of its
1371 argument as a disjoint set of small integers.
1372 ** bug fix: the distribution of random integers is now completely
1373 uniform even when the specified limit is not a power of two.
1374 (Previously some values could be about 0.1 % more probable than
1375 others in the worst case.) (lp#309467)
1376 ** RANDOM on large integer arguments is generally faster and conses
1377 less than before; this is visible for fixnums above a length of
1378 about 24 bits, but extremely so for bignums: the old implementation
1379 used time and space quadratical in the size of the argument there,
1380 the new one is linear.
1381 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1382 main entry point, SB-EXT:QUIT is deprecated.
1383 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1384 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1385 * enhancement: FASL loading no longer grabs the world-lock.
1386 * enhancement: GENCGC reclaims space more aggressively when objects being
1387 allocated are a large fraction of the total available heap space.
1389 * enhancement: backtraces show the correct number of arguments for frames
1390 called with too many arguments.
1391 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1393 * enhancement: ASDF has been updated 2.21.
1394 * optimization: fewer uses of full calls to signed modular functions.
1396 * optimization: typechecking alien values is typically 5 x faster.
1397 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1399 * bug fix: file compilation performance issues when dumping subtypes
1400 of CHARACTER (lp#994487)
1401 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1402 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1403 OPEN. (lp#969352, thanks to Kambiz Darabi)
1404 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1406 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1407 classoid even if X was not the proper name of the class. (lp#941102)
1408 * bug fix: declaration leakage between lexical environments due to careless
1409 use of NCONC in MAKE-LEXENV. (lp#924276)
1410 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1411 *default-pathname-defaults* contains NAME or TYPE components.
1412 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1413 from CL package, e.g. (loop . 10).
1414 * bug fix: run-program with existent or non-existent files for :output or
1415 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1416 returns NIL instead of signalling an obscure error.
1417 * bug fix: fix miscompilation of some logand forms with large constant
1418 arguments. (lp#974406)
1419 * bug fix: account for funcallable-instance objects properly in ROOM.
1420 * bug fix: incorrect octets reported for c-string decoding errors.
1422 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1424 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1425 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1426 allowing faster release of memory back to the OS. (lp#991293)
1427 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1428 existing deadline for the dynamic scope of its body.
1429 * bug fix: compiler-internal interval arithmetic needed to be more
1430 conservative about open intervals when operated on by monotonic but not
1431 strictly-monotonic functions. (lp#975528)
1432 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1433 it's also slightly faster. (lp#998926)
1434 * bug fix: better error messages for malformed declarations.
1436 * bug fix: define-condition didn't return the name of the defined condition.
1438 ** improved docstrings: REPLACE (lp#965592)
1440 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1441 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1442 could end up in the heap making GC unhappy.
1443 (Thanks to James Knight, lp#911027)
1445 ** SBCL can now be built using Clang.
1446 ** ASDF has been updated 2.20.
1447 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1448 * bug fix: don't complain about a too-hairy lexical environment for inlining
1449 when the function has never been requested for inlining. (lp#963530)
1451 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1452 * enhancements to building SBCL using make.sh:
1453 ** --fancy can be specified to enable all supported feature enhancements.
1454 ** --with-<feature> and --without-<feature> can be used to specify
1455 which features to build with.
1456 ** --arch option can be used to specify the architecture to build for.
1457 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1458 full-blows cross-compilation.)
1459 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1460 which allows specifying name of the default interning package for the
1462 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1463 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1464 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1465 null alien when malloc() fails. (lp#891268)
1466 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1467 conditions can be conveniently accessed through function with the same
1468 name, analogously to CONTINUE.
1469 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1470 from the printer by type, causing an error marker to be printed instead.
1471 (Thanks to Attila Lendvai)
1472 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1473 generally behave better when errors occur during printing.
1474 * enhancement: the test runner now takes a --report-skipped-tests argument
1475 to report the individual tests skipped as well as the number of skipped
1477 * enhancement: undefined functions now appear in backtraces as ("undefined
1478 function") instead of ("bogus stack frame") on x86oids.
1479 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1480 deadlock errors are reported in an easier-to-decipher manner.
1481 * enhancement: DESCRIBE on type designators reports the expansion in more
1483 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1484 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1485 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1486 * enhancement: better disassembly of segment-prefixes on x86 and other
1487 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1488 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1489 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1490 * optimization: SUBSEQ on vectors of unknown element type is substantially
1492 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1493 be stack-allocated. (lp#902351)
1494 * optimization: the compiler is smarter about representation selection for
1495 floating point constants used in full calls.
1496 * optimization: the compiler no longer refuses to coerce large fixnums to
1497 single floats inline, except on x86 where this limitation is still
1499 * optimization: truncation operations on integers with constant divisor
1500 arguments 1 and -1 are optimized away.
1501 * bug fix: deadlock detection could report the same deadlock twice, for
1502 two different threads. Now a single deadlock is reported exactly once.
1503 * bug fix: interval-arithmetic division during type derivation did not
1504 account for signed zeros.
1505 * bug fix: compiler error when typechecking a call to a function with
1506 non-constant keyword arguments.
1507 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1508 * bug fix: condition slot accessors no longer cause undefined function
1509 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1510 form that defines them. (lp#896379)
1511 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1512 by ANSI. (lp#894202)
1513 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1514 bogusly report NIL, T.
1515 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1516 required arguments ignored and performed assignments to others.
1518 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1519 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1520 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1521 * bug fix: redefining a function whose previous definition contained an
1522 unknown type no longer causes a style-warning. (lp#806243)
1523 * bug fix: undefined functions now appear in backtraces as ("undefined
1524 function") instead of ("bogus stack frame") on non-x86oids.
1525 * bug fix: backtraces are no longer cut off at ("undefined function") when
1526 called under certain circumstances (involving a caller-allocated stack
1528 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1529 systems. (regression since 1.0.53)
1530 * bug fix: GC deadlocks from dladdr() on certain platforms.
1531 * bug fix: broken standard streams no longer automatically cause recursive
1532 errors on debugger entry.
1533 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1534 (regression since 1.0.53)
1535 * bug fix: attempts to stack allocate a required argument to a function with
1536 an external entry point caused compiler-errors.
1537 * bug fix: compiler notes for failed stack allocation for a function argument
1538 no longer claim to be unable to stack allocate the function.
1539 * bug fix: COERCE now signals a type-error on several coercions to
1540 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1541 * bug fix: missing failure-to-stack-allocate compiler notes for some
1542 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1543 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1545 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1547 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1548 * minor incompatible changes:
1549 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1550 instead of the link.
1551 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1552 directory, but now signal an error instead. Use TRUENAME to resolve the
1553 pathname if you wish to delete the linked directory, and DELETE-FILE if
1554 you wish to delete the
1555 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1556 symbols associated with it will trigger a compile-time warning.
1557 * thread-related enhancements:
1558 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1559 Many thanks to generous donors!)
1560 ** Threading is now more reliable on non-Linux platforms. We still don't
1561 consider threads on non-Linux platforms good enough to enable them by
1562 default, but they're in a clearly better shape now.
1563 ** Deadlines supported now on all platforms.
1564 ** All blocking functions in the threading API now have a :TIMEOUT
1566 ** Semaphore notification objects have been added to SB-THREAD.
1567 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1568 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1569 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1570 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1571 using an API anologous to defining new SETFable places.
1572 * GC-related enhancements and bug fixes:
1573 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1574 and Gb suffixes. Default is megabytes as before.
1575 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1576 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1577 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1578 new defaults are in place to prevent hitting swap on low-end systems.
1579 Use build-time option --dynamic-space-size to build an SBCL with
1580 another default, or the runtime option to adjust the size at startup: a
1581 good size is at most equal to the amount of physical memory the system
1583 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1585 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1586 refuses to create SIMPLE-FUN objects.
1587 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1589 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1590 validation of pointer objects as GENCGC does, instead of a
1591 comparatively weak bounds-check against the heap spaces.
1592 * SB-BSD-SOCKETS bug fixes:
1593 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1594 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1595 systems with getaddrinfo().
1596 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1597 safe outside systems with getaddrinfo().
1598 * enhancement: ASDF has been updated 2.019.
1599 * enhancement: special-case TCO prevention for functions which never return
1600 extended to untrusted types, keeping one more frame's worth of debug
1601 information around in many cases.
1602 * enhancement: debug-names of anonymous and local function are more
1603 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1604 * enhancement: on win32, ABS of complex floats guards better against
1605 overflows. (lp#888410)
1606 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1607 process exiting with code 1. (lp#676987)
1608 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1609 the system where on the filesystem the SBCL sources themselves are
1610 located. (Thanks to Zach Beane)
1611 * enhancement: the compiler is now able to derive tighter bounds for
1612 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1613 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1614 correctly, even on wide-fixnum builds. (lp#887220)
1615 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1616 resolved to directories.
1617 * bug fix: type mismatch when assigning to lexical variables no longer
1618 result in fasl-dumping internal type objects. (lp#890750)
1619 * bug fix: type mismatch on (SETF AREF) and function return values no
1620 longer result in fasl-dumping internal type objects.
1621 * bug fix: With several combinations of argument types, for example (EXPT
1622 <integer> <(complex double)>), EXPT now uses double-precision throughout
1623 instead of partially calculating only to single-precision. (lp#741564;
1624 thanks to Lutz Euler)
1625 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1626 objects when interrupted by GC on PPC.
1628 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1629 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1630 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1631 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1632 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1633 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1634 targets is now 63 bits (up from 61).
1635 * enhancement: DESCRIBE now reports a lambda-list and source location
1636 for complext setf-expanders.
1637 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1638 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1639 of multiple-valued places to be set to NIL, instead of signalling an
1640 error (per a careful reading of CLHS 5.1.2.3).
1641 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1642 * bug fix: repair crash in x86oid darwin signal handling emulation
1643 when built with certain compilers.
1644 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1645 rotation arguments on x86-64. (lp#882151)
1646 * bug fix: low-level control flow optimisations could result in bogus
1647 code in functions with tail and non-tail calls to local functions on
1648 x86oids. (lp#883500)
1649 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1650 to emit literal characters > (code-char 4095), for comparisons with
1651 constant characters.
1652 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1653 on 64 bit platforms. (lp#881445)
1654 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1655 delete the wrong file when using relative pathnames. (lp#882877)
1656 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1657 sequences and :KEY NIL.
1659 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1660 * enhancement: ASDF has been updated to version 2.017.
1661 * enhancement: the --core command line option now accepts binaries with
1663 * enhancement: when built with :sb-core-compression, core files (regular
1664 or executable) can be compressed with zlib. Use the :COMPRESSION
1665 argument to SAVE-LISP-AND-DIE to specify a compression level.
1666 * enhancement: --[no-]merge-core-pages determines whether the runtime
1667 hints the operating system that identical core pages between SBCL
1668 processes should share the same physical memory. Default is to only
1669 enable this for compressed cores.
1670 * optimization: SLEEP no longer conses.
1671 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1672 or bit-vectors when using the standard pretty-print dispatch table.
1673 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1675 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1676 AREF, CHAR, etc. (lp#826971)
1677 * bug fix: compiler-errors causes by integer arguments with composed of
1678 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1679 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1680 expressions. (lp#770184)
1681 * bug fix: complex single float literals are correctly aligned when used
1682 as arguments of arithmetic operators.
1683 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1684 fixnum is correct. (reported by Peter Keller)
1685 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1686 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1688 * bug fix: redefining classes such that slots with custom allocation are
1689 added or removed works again.
1691 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1692 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1693 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1694 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1695 * enhancement: added support for socket keepalive timeout intervals
1696 and probe counts on Linux.
1697 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1698 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1699 * enhancement: added new toplevel options --quit and --non-interactive
1701 * enhancement: the Windows port of SBCL now builds and runs on Wine
1702 (thanks to Anton Kovalenko).
1703 * enhancement: more, and more correct, SSE instruction definitions on
1704 x86-64 (thanks to Alexander Gavrilov).
1705 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1706 to help the processor execute spin loops, when applicable. Currently
1707 implemented for x86 and x86-64.
1708 * optimization: unsigned integer divisions by a constant are implemented
1709 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1710 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1711 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1712 instructions. (lp#814688)
1713 * bug fix: COERCE to unfinalized extended sequence classes now works.
1714 (reported by Jan Moringen; lp#815155)
1715 * bug fix: a compiler error during typecheck generation, reported by Eric
1716 Marsden. (lp#816564)
1717 * bug fix: obsolete instance protocol fires when shared slots are added
1719 * bug fix: fixed-format floating point printing with scaling factors.
1721 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1722 backtraces. (lp#818460)
1723 * bug fix: better backtraces for interrupted syscall frames on x86.
1725 * bug fix: SSE comparison instructions can be disassembled even when one
1726 operand is in memory. (lp#814702)
1727 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1728 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1729 type information associated with the VALUES form.
1730 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1732 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1733 first write (lp#561642).
1734 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1735 * bug fix: bound propagation involving conversion of large bignums to
1736 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1738 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1739 functions; reported by Lutz Euler (lp#826459).
1740 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1743 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1744 * enhancement: errors from FD handlers now provide a restart to remove
1745 the offending handler.
1746 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1748 * enhancement: location of user or system initialization file can now easily
1749 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1750 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1751 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1752 the thunk, as a keyword argument, :arguments.
1753 * enhancement: constraint propagation is simplified (and sped up) when
1754 COMPILATION-SPEED > SPEED.
1755 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1756 * enhancement: debugger understands &MORE arguments better.
1757 * optimization: extracting bits of a single-float on x86-64 has been
1758 optimized. (lp#555201)
1759 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1760 when (> SPEED SPACE).
1761 * optimization: local call trampolines (x86 and x86-64) are emitted
1763 * optimization: implicit value cells for dynamic-extent closed-over bindings
1764 on x86 and x86-64 can hold unboxed values as well.
1765 * meta-optimization: improved compilation speed, especially for large
1766 functions. (lp#792363 and lp#394206)
1767 * bug fix: bound derivation for floating point operations is now more
1768 careful about rounding possibly closing open bounds. (lp#793771)
1769 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1770 backwards incompatible change in 1.0.48.27)
1771 * bug fix: occasional debugger errors in when a type-error occured in a
1772 function with dynamic-extent &rest list.
1773 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1774 boa-construtors can be used to initialized structure slots.
1775 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1776 (lp#795705, regression)
1777 * bug fix: DIRECTORY works better on logical pathnames.
1778 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1779 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1780 * bug fix: the compiler no longer constant-folds NaNs in
1781 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1782 * bug fix: FORMAT now handles floating point rounding correct, eg.
1783 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1785 * bug fix: style warning during lambda-list introspection of generic
1786 functions with both optional and key argments.
1787 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1788 folding. (lp#729765)
1789 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1792 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1793 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1794 interrupts for its body.
1795 * enhancement: source locations are now available for files loaded as
1796 source, compile-time-too evaluation, and initialization files.
1797 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1798 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1799 when a temporary file is used for compilation.
1800 * enhancement: ASDF has been updated to version 2.015.3.
1801 * enhancement: backtraces involving frames from the default evaluator are
1803 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1805 * enhancement: more informative compile-time warnings and runtime errors for
1806 type-errors detected at compile-time.
1807 * enhancement: deadlock detection for mutexes and spinlocks.
1808 * enhancement: dynamic-extent for &rest lists stack allocate only their
1809 spines, not their argumets. While portable code should not rely on this,
1810 particularly in combination with inlining, it should make dynamic-extent
1811 easier to use safely.
1812 * enhancement: SB-POSIX improvements:
1813 ** WNOHANG and WUNTRACED are exported.
1814 ** SYSCALL-ERROR now also provides the name of the failing system call.
1815 * enhancement: --script improvements:
1816 ** errors on standard input, output, and error streams are handled and
1817 cause scripts to exit silently, making them easier to use in shell
1819 ** backtraces from scripts now go to standard error instead of the
1820 terminal even if one is available.
1821 ** --script can be an argument, causing the script to be loaded from
1823 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1824 strings to foreign memory.
1825 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1826 a file, making it easier to understand heap dynamics.
1827 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1828 allows the compiler to automatically elide rest-list allocation so long as
1829 the call sites are in functions that the compiler knows cannot escape.
1831 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1832 especially in safe code when none of the required arguments have changed
1834 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1835 uninterruptible, as well as blocking reads from socket streams created
1836 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1837 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1838 from the to-char if the from-char is not a dispatch-macro character.
1839 * bug fix: references to undefined variables in function calls that are
1840 optimized away now signal a runtime error. (lp#722734)
1841 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1842 types from a function defined in the same file. (regression from
1844 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1846 * bug fix: spurious errors during QUIT when standard streams were closed.
1848 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1849 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1850 years, is now no longer supported.
1851 * enhancement: read() and write() have been added to SB-POSIX.
1852 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1853 accurately, allowing better typechecking of call-sites.
1854 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1855 are no longer caught. (reverted to pre 1.0.34 behaviour)
1856 * optimization: slightly faster ISQRT. (lp#713343)
1857 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1858 * bug fix: TRACE behaves better when attempting to trace undefined
1859 functions. (lp#740717)
1860 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1861 to (FUNCALL #'(LAMBDA ...) ...).
1862 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1863 a compile-time error. (lp#720382)
1864 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1866 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1867 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1868 optimization. (regression from 1.0.45.18/1.0.46.15)
1869 * bug fix: package locks did not protects against compile-time side-effects
1870 of DEFUN. (lp#675584)
1871 * bug fix: --dynamic-space-size argument is validated more carefully.
1873 * bug fix: memory fault from printing a malformed simple-condition.
1875 * bug fix: redefining classes so that slot-definition classes change now
1876 engages the obsolete instance protocol. (lp#766271)
1877 * bug fix: constant improper lists could break source coverage recording.
1879 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1880 could exhaust stack.
1882 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1883 * bug fix: fix mach port rights leaks in mach exception handling code on
1884 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1886 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1887 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1888 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1889 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1890 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1891 processed using EVAL -- now the appropriate toplevel form is reported instead.
1892 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1893 declarations. (lp#726331)
1894 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1895 that NIL/NULL is excluded from the type.
1896 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1898 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1899 and its compatriots.
1900 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1901 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1902 stack-allocated values out of their dynamic-extent. (lp#310175)
1903 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1904 x86-64 builds caused a type-error.
1905 * bug fix: calling COMPILE with something else than a lambda-expression as the
1906 second argument reports a more sensible error. (lp#718905)
1907 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1908 are detected. (lp#520607)
1909 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1911 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1912 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1913 methods. (regression from 1.0.45.18)
1914 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1915 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1916 * bug fix: several foreign functions accepting string also accepted NIL and
1917 consequently caused a memory fault at 0 now signal a type-error instead.
1919 * bug fix: under rare circumstances, constraint propagation could rewrite a
1920 variable reference to refer to a variable not in scope, causing an error
1921 during physical environment analysis when attempting to close over the
1922 variable. (lp#551227)
1923 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1925 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1926 * enhancement: largefile support on Solaris.
1927 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1928 arguments (lp#710017)
1929 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1930 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1932 * optimization: ERROR and CERROR are approximately 5 times faster.
1933 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1934 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1935 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1936 up instance creation in those cases.
1937 * optimization: arithmetic operations with multiple constant arguments in now
1938 have them reduced at compile-time. (lp#676414)
1939 * optimization: determining current character position on string-streams for
1940 pretty-printing was overly slow.
1941 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1942 lifetime analysis to overwrite closed-over variables (lp#681092).
1943 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1944 were not handled correctly (lp#713063).
1945 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1947 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1948 mistake. (lp#667297).
1949 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1950 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1951 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1952 unintern the wrong symbol with the same name. (lp#693796)
1953 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1954 making it possible to restore the initial table if it has been messed up.
1957 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1958 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1959 Refer to documentation for details.
1960 * enhancement: ASDF has been updated to version 2.010.
1961 * optimization: mutated closed-over variables that are only accessed by
1962 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1963 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1964 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1965 * optimization: UNWIND-PROTECT cleanup functions are now declared
1967 * bug fix: backtracing function with &REST arguments now shows the full
1968 argument list. (lp#310173)
1969 * bug fix: return types for functions with complex lambda-lists are now
1970 derived properly (lp#384892)
1971 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1972 long string arguments slowed the compiler down to a crawl.
1973 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1974 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1975 in the DEFMETHOD body.
1976 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1977 messages, being instead replaced with the corresponding function name.
1978 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1979 operators. (lp#309448)
1981 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1982 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1983 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1984 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1986 * enhancement: default dynamic-space size can be configured at build-time
1987 without touching source, using the --dynamic-space-size argument to make.sh.
1988 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1989 qualities, and mentions ALWAYS-BOUND declarations.
1990 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1992 * enhancement: ASDF has been updated to 2.009.
1993 * enhancement: the system detects known type-erros in calls better,
1994 signalling a full warning about violated proclaimed FTYPEs and violations
1995 of derived FTYPEs within the same file, including self-calls.
1996 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1997 * optimization: constant-folding exploits numeric and character types, in
1998 addition member types.
1999 * optimization: numeric, character and member types that are inhabited by
2000 exactly one value are tested with EQL.
2001 * optimization: more conditional branches are eliminated during IR1.
2002 Branches are simplified before performing if/if-conversion, and simple
2003 equivalent branches (that only read the same constant or variable) are
2005 * improvements to the Windows port:
2006 ** change: canonical unparsing form for pathname namestrings now uses / as
2007 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2008 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2009 on Windows. (thanks to Kalyanov Dmitry)
2010 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2012 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2013 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2014 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2015 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2017 * bug fix: interrupts arriving during CL:OPEN caused an error.
2018 * bug fix: overeager character buffering could cause input to block
2019 spuriously when reading from a pipe (lp#643686)
2020 * bug fix: more efficient timer expiry should avoid starvation on systems
2021 where number of SIGALRMs per second is restricted. (lp#375515)
2022 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2023 * bug fix: compile-times no longer scale linearly with the size of
2024 quoted lists in source-code. (lp#654289)
2025 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2026 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2027 so badly. (lp#654485)
2028 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2029 an error for eg. STRUCTURE. (lp#458015)
2030 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2031 (lp#613871, thanks to Roman Marynchak)
2032 * bug fix: more reliable &REST list type derivation. (lp#655203)
2033 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2034 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2035 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2036 also declared NOTINLINE. (lp#655581)
2037 * bug fix: the compiler could attempt to emit constant left shifts of
2038 greater value than n-word-bits. (lp#309063)
2039 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2040 type information for the function being set. (lp#659220)
2041 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2042 containing self-calls were recompiled with a new signature, and failed
2043 to warn when a self-call using the old signature was left in. (lp#655126)
2044 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2045 :DEFAULT when the default external had character size other than 8 bits.
2047 * bug fix: derived types of functions in the same file were implicitly
2048 trusted, leading to potential heap corruption when those function were
2049 defined incompatibly. (lp#657499)
2050 * bug fix: existing ASDF source registries are ignored when building
2051 contribs (lp#659105)
2052 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2053 (lp#655824, thanks to Roman Marynchak)
2054 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2055 package-lock violation was detected. (lp#660752)
2056 * bug fix: the system can store different docstrings for a single function
2057 under different names. (lp#661631, regression from 1.0.29.24)
2058 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2059 properly. (lp#384801)
2060 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2061 of specified length could confuse the type derivation in unsafe code.
2063 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2064 fork with multiple Lisp threads running is made on every platform,
2065 not just Darwin. (lp#451111)
2066 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2067 around when core was saved, which could cause undefined behaviour when the
2069 * bug fix: Allow UNTRACE of functions that are no longer defined
2070 (lp#667657, thanks to Attila Lendvai)
2071 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2072 compile-time warning (lp#664373, thanks to Stas Boukarev)
2074 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2075 * incompatible change: FD-STREAMS no longer participate in the serve-event
2076 event-loop by default. (lp#316072)
2077 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2078 affects streams from CL:OPEN.
2079 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2080 default, but this is liable to change: applications needing serve-event
2081 for socket streams should explicitly request it using :SERVE-EVENTS T
2083 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2085 * enhancement: CLOS effective method functions and defclass slot typechecking
2086 function now have debug names for use in backtraces and profiles.
2087 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2089 * enhancement: symbols are printed using fully qualified names in several
2090 error and warning messages which are often associated with package
2091 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2092 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2093 thanks to Andrew Golding)
2094 * bug fix: reading /proc files on Linux works. (lp#425199)
2095 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2097 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2098 breaking code that tried to write the value of a printer control variable.
2099 (lp#581564, thanks to Stas Boukarev)
2100 * bug fix: WRITE compiler macro did not handle output stream designators
2101 correctly. (lp#598374, thanks to Stas Boukarev)
2102 * bug fix: better availability of names of foreign functions in backtraces
2103 on Linux. (lp#626962, thanks to Stas Boukarev)
2104 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2105 lp#627581, thanks to Josh Elsasser and Jim Wise)
2106 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2107 thanks to Josh Elsasser)
2108 * bug fix: using aliases for builtin classes as defmethod specializers
2109 without adding DEFTYPEs for them works. (lp#618387)
2110 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2112 * bug fix: legally dynamic-extent lists and vectors used as
2113 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2114 * bug fix: inline-expansion creating references to dead lambda-variables
2115 (lp#454681, thanks to Alexey Dejneka)
2116 * bug fix: better error message for bogus numerical arguments to RANDOM.
2117 (lp#598986, thanks to Stas Boukarev)
2118 * bug fix: the compiler occasionally inlined references from incompatible
2119 environments occurs. (lp#308951)
2120 * bug fix: the compiler threw an error when trying to compile a local
2121 function (labels or flet) known to take a specialized complex argument.
2122 (not in launchpad, reported by sykopomp in #lispgames)
2123 * bug fix: package-locks failed to protect against compile-time effects of
2124 DEFUN when the symbol previously had a macro definition. (lp#576637)
2125 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2126 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2127 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2128 * bug fix: evaluation in debugger REPL works using the global context when
2129 in frames that do not have sufficient debug information.
2130 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2132 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2134 * bug fix: interrupt taking longer than the requested period caused SLEEP
2135 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2137 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2139 ** Cross-compilation host is now specified to make.sh using
2140 command-line argument --xc-host=<command> instead of a positional
2141 argument. (thanks to Daniel Herring)
2142 ** Install location can be specified to make.sh using command-line
2143 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2144 * optimization: The default implementation of
2145 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2146 * enhancement: Explicit memory barrier operations are now available for use
2147 by multithreaded code. See documentation for details.
2148 * enhancement: Experimental support for threading on Linux/PPC.
2149 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2150 * bug fix: EXPT signals an error if first argument is a zero and second
2151 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2152 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2153 (lp#576594, thanks to Roman Marynchak)
2154 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2155 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2157 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2158 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2159 cached, leading to many fewer expensive calls to
2160 COMPUTE-APPLICABLE-METHODS.
2161 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2162 CLASS argument, search for and call an appropriate optimized ctor function
2164 * bug fix: WRITE always returns the correct value.
2166 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2167 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2168 * bug fix: Name conflicts between symbols passed as arguments to a single
2169 call to IMPORT no longer add multiple symbols with the same name to the
2170 package (detectable via DO-SYMBOLS).
2171 * bug fix: support building without the dlshim on darwin x86 and x86-64
2173 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2175 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2176 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2178 * bug fix: linkage-table entries on PPC now no longer overflow their
2179 space allocation (potentially causing crashes if they are written out
2181 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2182 platforms, preventing the GC from seeing stale pointers on the control
2183 stack in subsequent GCs (which would, and does, break invariants).
2184 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2185 * bug fix: Literal characters with code points greater than about 32767
2186 now work on PPC UNICODE builds.
2187 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2188 high order bits are explicitly cleared out. In some contrived situations,
2189 this could lead to wrong results in mixed real/complex float arithmetic.
2190 * bug fix: Fix function/macro redefinition warnings when building with
2191 clisp. (lp#576787, thanks to Josh Elsasser)
2192 * new platform: experimental support for ppc/openbsd (thanks to Josh
2194 * bug fix: Floating-point traps now work on ppc/linux.
2196 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2197 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2198 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2199 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2200 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2201 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2202 SB-THREAD:GRAB-MUTEX.
2203 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2204 contain additional data structures and tools for concurrent programming;
2205 at the moment it contains a lock-free queue, and a lock-free mailbox
2207 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2208 GET-MUTEX but takes &key rather than &optional parameters. Also added
2209 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2211 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2212 SB-THREAD:WAIT-ON-SEMAPHORE.
2213 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2215 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2216 conditions to defer the deadline for forever.
2217 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2219 * enhancement: errors from NO-APPLICABLE-METHOD and
2220 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2221 generic function call.
2222 * enhancement: SB-BSD-SOCKET improvements
2223 ** sockets and socket streams now have a more informative printed
2224 representation based on the corresponding SOCKET-NAME and
2226 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2228 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2229 CL:CLOSE when appropriate, and no longer disassociates the stream
2230 from the socket if close failed. (lp#543951)
2231 * improvements to the instrumenting profiler
2232 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2233 ** optimization: counters no longer use locks for the overflow mode.
2234 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2235 incurred an off-by-one miscount.
2236 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2237 * enhancement: improved DEFMETHOD pretty-printing.
2238 * enhancement: perform range reduction when arguments are too large for
2239 x87's transcendentals (instead of returning 0). (lp#327192)
2240 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2241 some of CL-PPCRE's macros. (lp#570079)
2242 * enhancement: our machine code is slightly less hostile to valgrind on
2244 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2245 to Robert Swindells and Aleksej Saushev)
2246 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2247 * bug fix: a rare case of startup-time page table corruption.
2248 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2249 to timeouts could be left in an inconsistent state.
2250 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2251 * bug fix: misoptimization of multiplication by one in
2252 (SB-C::FLOAT-ACCURACY 0) policies.
2253 * bug fix: miscounts in SB-PROFILE.
2254 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2255 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2256 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2257 up itself" (March 2010) for further details.
2258 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2259 against length of the list if the element is found before the specified
2260 END is reached. (thanks to Alec Berryman, lp#554385)
2261 * bug fix: errors signalled during package graph modification no longer
2262 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2263 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2264 :SB-DOC feature. (lp#552564)
2265 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2266 * bug fix: more robust runtime executable path detection. (lp#375549)
2267 * bug fix: GCD always returns positive values. (lp#413680)
2268 * bug fix: Converting division to multiplication by reciprocal handles
2270 * bug fix: We were too eager in eliding range reduction tests on x87.
2271 The maximal magnitude is 2^63, not 2^64.
2272 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2274 * bug fix: Maybe restore buildability on Alpha.
2275 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2277 * bug fix: RANDOM-STATE can be printed readably again.
2278 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2279 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2280 types) could result in type mismatches during compilation.
2282 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2283 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2284 stack frame thrown from.
2285 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2286 compiler optimization qualities inside dynamic extent of its body.
2287 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2288 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2290 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2291 constraint propgation, allowing better compilation eg. when used to
2292 access structures with WITH-SLOTS. (lp#520366)
2293 * optimization: the compiler is now more aware of the type of the underlying
2294 storage vector for multidimensional simple arrays resulting in better code
2295 for accessing such arrays.
2296 * optimization: passing NIL as the environment argument to TYPEP no longer
2297 inhibits optimizing it. (lp#309788)
2298 * optimization: more efficient register usage when handling single-float
2299 arguments on x86-64. (thanks to Lutz Euler)
2300 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2301 pre-allocated temporary vectors. (lp#496249)
2302 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2303 in :INITIAL-CONTENTS. (lp#523612)
2304 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2305 functions. (lp#524707)
2306 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2307 WITH-SLOTS usages during compilation.
2308 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2309 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2310 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2311 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2312 instruction (tested on x86oid linux with ud2-breakpoints).
2313 * bug fix: slam.sh now works on win32.
2314 * bug fix: better differences of numeric types. (lp#309124)
2315 * bug fix: arrays declared intersection and union types can have their
2316 upgraded element type derived. (lp#316078)
2317 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2318 threads started during profiling. (lp#472499)
2319 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2321 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2322 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2323 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2324 values instead of signaling an error. (lp#309093)
2325 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2327 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2328 declarations (lp#497321)
2329 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2330 and failed to detect circular lists (lp#452008)
2331 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2333 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2334 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2335 due to it, so that handlers can run.
2336 * bug fix: reparsing undefined types if they have become defined since
2337 parsing. (lp#309128)
2338 * bug fix: missing &REST type in a proclamation for a function with both
2339 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2340 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2341 expanded calls (lp#542174)
2342 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2343 than just at toplevel form.
2345 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2346 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2347 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2348 but work on type specifiers.
2349 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2350 to name a type specifier.
2351 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2352 specifier is valid where "valid" basically means "would be accepted as
2353 second argument of TYPEP".
2354 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2355 returns the function's declared, or derived FTYPE.
2356 * new feature: SB-POSIX now supports accessing the d_ino member of
2357 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2358 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2359 provide for seeding a RANDOM-STATE object with user-provided data or
2360 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2361 attempt to initialize the returned state from the operating system's
2362 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2363 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2364 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2365 * bug fix: Fix grammar and style issues for the docstrings of
2366 printer-related variables and functions. (Thanks to mon_key; launchpad
2368 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2370 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2371 in a row even though a handler defered the deadline long into the
2373 * bug fix: A deadline handler was run without interrupts enabled for a
2374 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2375 in infinitely spinning, non-killable threads.
2376 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2377 before reaching the erring stack frame.
2378 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2379 real power. (launchpad bug lp#525949)
2380 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2381 GENCGC platforms. (launchpad bug lp#529014)
2382 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2383 (launchpad bug lp#525916)
2384 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2385 (Thanks to Robert Goldman)
2387 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2388 * optimization: ROUND with a single single-float or double-float argument
2389 is properly inlined when possible.
2390 * optimization: Slightly better code is generated for integer<->float
2391 conversions and for single-float<->double-float conversions on x86-64.
2392 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2393 code for 32-bit and 64-bit rotations on x86-64.
2394 * bug fix: The install script changes the ownership of directories as well
2395 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2396 launchpad bug lp#508485)
2397 * bug fix: TRUNCATE with a single single-float or double-float argument is
2398 properly inlined when possible. (launchpad bug lp#489388)
2399 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2400 no longer causes a compiler error on x86 and ppc.
2401 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2402 always relative to *READTABLE* rather than the passed argument.
2404 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2405 * minor incompatible change: threading support is now enabled by default
2407 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2409 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2410 are now caught and reported just like errors during macroexpansion.
2411 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2412 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2413 * enhancement: ASDF systems can now depends on SB-QUEUE.
2414 * fixes and improvements related to Unicode and external formats:
2415 ** bug fix: error handling and restart usage in the ucs-2 external format
2417 ** there is now an implementation of the ucs-4 external format.
2418 ** the utf-16 and utf-32 external formats are supported.
2419 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2420 in the environment. setenv() and unsetenv() are also provided. (reported by
2421 Fare Rideau; launchpad bug lp#460455)
2422 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2423 loading. This ensures sensible errors for .FASL files from other
2424 implementations on case-insensitive filesystems. (reported by Willem
2425 Broekema; launchpad bug lp#489417)
2426 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2427 Willem Broekema; launchpad bug lp#489698).
2428 * bug fix: some minor code rearrangements to reenable warning-free building
2429 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2430 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2432 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2435 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2436 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2437 * improvement: support O_LARGEFILE access to files larger than 2GB on
2438 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2439 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2440 definitions for methods specializing on the passed class itself.
2441 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2442 definitions for methods specializing on the passed class itself, or on
2444 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2445 about itself during the build (e.g. for M-? in Slime), if this flag is
2446 enabled in customize-target-features.lisp. This will increase the core
2447 size by about 5-6mb, though, so it's mostly interesting to SBCL
2449 * new feature: various GENCGC tuning parameters have been experimentally
2450 documented and exported from SB-EXT. See documentation for details.
2451 * fixes and improvements related to Unicode and external formats:
2452 ** the Unicode character database has been upgraded to the
2453 Unicode 5.2 standard, giving names and properties to a number of new
2454 characters, and providing a few extra characters with case
2456 ** improvement: restarts for providing replacement input/output on coding
2457 errors for fd-stream external formats.
2458 ** improvement: where :<encoding> is a keyword corresponding to an
2459 external format the system supports, it is now possible to specify
2460 (:<encoding> :replacement <character>) as an external format which will
2461 automatically substitute <character> on encoding or decoding errors for
2462 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2464 ** improvement: the file streams underlying the standard streams (such as
2465 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2466 which uses the replacement mechanism to handle encoding errors,
2467 preventing various infinite error chains and unrecoverable I/O
2469 ** minor incompatible change: the utf-8 external format now correctly
2470 refuses to encode Lisp characters in the surrogate range (char-codes
2471 between #xd800 and #xdfff).
2472 ** fix a typo preventing conversion of strings into octet vectors
2473 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2475 ** fix a bug in the octet multibyte handling of decoding errors and the
2476 USE-VALUE restart. (launchpad bug lp#314939)
2477 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2478 restart on fd-stream decoding errors.
2479 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2480 error is near the end of file.
2481 ** fix a double-error case in unibyte octet conversions, when the first
2482 use of USE-VALUE is ignored.
2483 ** fix bugs in handling of undefined code points in unibyte encodings.
2484 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2485 streams after an UNREAD-CHAR.
2486 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2487 object is allocated in a boxed region of dynamic space.
2488 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2489 fork with multiple Lisp threads running is made, instead of going
2490 ahead with unpredictable consequences. (reported by Leslie Polzer)
2491 * bug fix: uses of slot accessors on specialized method parameters within
2492 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2493 error while finalizing the class. This fix may cause classes with slot
2494 accessors to be finalized later than previously. (reported by Lars Rune
2495 Nøstdal; launchpad bug lp#473699)
2496 * bug fix: restore buildability on the MIPS platform. (regression from
2497 1.0.30.38, reported by Samium Gromoff)
2498 * bug fix: inspecting closures is less likely to fail with a type error.
2499 * bug fix: no timer starvation when setting the system clock back.
2500 (launchpad bug lp#460283)
2501 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2502 standard pprint dispatch table as specified by CLHS.
2503 * bug fix: give CLISP a hint about a type declaration to enable it to build
2504 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2506 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2507 (reported by Attila Lendvai; launchpad bug lp#310132)
2508 * bug fix: distinguish in type specifiers between arrays that might be
2509 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2510 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2511 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2512 * bug fix: setting the value of a symbol-macro within a method in the
2513 presence of type declarations works properly again. (reported by Iban
2514 Hatchondo; launchpad bug lp#485019)
2516 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2517 * optimization: faster FIND and POSITION on strings of unknown element type
2518 in high SPEED policies. (thanks to Karol Swietlicki)
2519 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2521 * improvement: better error signalling for bogus parameter specializer names
2522 in DEFMETHOD forms (reported by Pluijzer)
2523 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2525 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2527 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2528 removes previous default initargs (reported by Lars Rune Nøstdal and
2530 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2531 lambda-lists. (reported by Peter Seibel)
2532 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2533 correctly when starting from an executable core without saved runtime
2534 options (reported by Faré Rideau, thanks to Zach Beane)
2535 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2536 an optimization note instead. (reported by Martin Cracauer)
2537 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2538 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2539 new process group if it doesn't need to share stdin with the sbcl
2540 process. (thanks to Leslie Polzer)
2541 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2542 (reported by Stanislaw Halik)
2544 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2545 * improvement: stack allocation is should now be possible in all nested
2546 inlining cases: failure to stack allocate when equivalent code is manually
2547 open coded is now considered a bug.
2548 * improvements related to Unicode:
2549 ** the Unicode character database has been upgraded to the
2550 Unicode 5.1 standard, giving names and properties to a number of new
2551 characters, and providing a few extra characters with case
2553 ** the system now recognizes and produces names for Unicode Hangul
2554 syllable characters.
2555 ** the EBCDIC-US external-format is now supported for octet operations
2556 (as well as for stream operations).
2557 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2558 be used to output toplevel compile-time effects into a separate .CFASL
2560 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2561 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2563 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2565 * optimization: division of floating point numbers by constants uses
2566 multiplication by reciprocal when an exact reciprocal exists.
2567 * optimization: multiplication of single- and double-floats floats by
2568 constant two has been optimized.
2569 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2570 sufficient type information is available. (thanks to Leslie Polzer)
2571 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2572 known structure objects are as efficient as defstruct generated accessors.
2573 * optimization: unused vector creation can now be optimized away.
2574 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2575 * improvement: a STYLE-WARNING is signalled when a generic function
2576 clobbers an earlier FTYPE proclamation.
2577 * improvement: the compiler is able to track the effective type of
2578 generic function across method addition and removal even in the
2579 absence of an explicit DEFGENERIC.
2580 * improvement: DESCRIBE now reports on symbols naming undefined
2581 but assumed or declared function as well.
2582 * improvement: recompilation of systems using SB-GROVEL now works
2583 (thanks to Leslie Polzer)
2584 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2585 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2587 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2588 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2589 well as user defined declaration names.
2590 ** VARIABLE-INFORMATION is now aware of alien variables.
2591 * improvement: improved address space layout on OpenBSD (thanks to Josh
2593 * improvement: pretty-printing of various Lisp forms has been improved
2594 (thanks to Tobias Rittweiler)
2595 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2596 unused were deleted in safe code. (reported by John Fremlin)
2597 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2599 * bug fix: some out-of-line array predicates were missing (reported by
2601 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2603 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2604 (thanks to Larry D'Anna)
2605 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2606 as well. (reported by Josh Elsasser)
2607 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2608 leading to possible attempts to delete the same file twice. See docstring
2609 on DELETE-FILE for details. (reported by John Fremlin)
2610 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2611 designator argument, rather than its truename. (reported by Luis
2613 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2614 information about some array types. (thanks to Luis Oliveira)
2615 * bug fix: moderately complex combinations of inline expansions could
2616 be miscompiled if the result was declared to be dynamic extent.
2617 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2618 form (+ <variable> <integer>) were miscompiled under certain
2620 * bug fix: in some cases no compiler note about failure to stack allocate
2621 was emitted, even if the objects were in fact heap allocated.
2622 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2623 allocation could cause objects users might reasonably expect to
2624 be heap allocated to be stack allocated.
2625 * bug fix: DESCRIBE signalled an error for generic functions under
2626 certain circumstances. (thanks to Leslie Polzer)
2627 * bug fix: Fixed spelling of an error message.
2629 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2630 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2631 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2632 of SB-THREAD:THREAD-ERROR-THREAD.
2633 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2634 * new feature: docstrings for local and anonymous functions are no longer
2635 discarded. (thanks to Leslie Polzer)
2636 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2637 values in other threads.
2638 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2639 about object allocation.
2640 * optimization: division of a real float by a complex float is implemented
2641 with a specialised code sequence.
2642 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2643 keywords is an order of magnitude faster.
2644 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2645 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2646 methods, and similarly for non-standard metaclass classes as long as there
2647 are no methods additional on MAKE-INSTANCE.
2648 * optimization: more efficient type-checks for FIXNUMs when the value
2649 is known to be a signed word on x86 and x86-64.
2650 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2651 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2653 * optimization: compiler is smarter about delegating argument type checks to
2655 * optimization: several character functions are now compiled somewhat more
2656 efficiently. (reported by Lynn Quam)
2657 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2658 * improvement: less unsafe constant folding in floating point arithmetic,
2659 especially for mixed complex/real -float operations.
2660 * optimization: constant double and single floats are stored in native
2661 unboxed format on x86[-64].
2662 * optimization: smarter code for arithmetic operations with constant floats,
2663 complex floats, or integers on x86[-64].
2664 * optimization: smarter code for conjugate/multiplication of float complexes
2665 and abs/negate of floats on x86-64.
2666 * optimization: more efficient complex float and real float operations on
2668 * improvement: complex float division is slightly more stable.
2669 * improvement: DESCRIBE output has been reworked to be easier to read and
2670 contains more pertinent information.
2671 * improvement: failure to provide requested stack allocation compiler notes
2672 provided in all cases (requested stack allocation not happening without a
2673 note being issued is now considered a bug.)
2674 * bug fix: SB-POSIX exports the documented types and functions
2675 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2676 types. (reported by "abhi")
2677 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2678 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2679 (thanks to Paul Khuong)
2680 * bug fix: looping around HANDLER-CASE could silently consume stack space
2681 on each iteration. (reported by "foobar")
2682 * bug fix: better error signalling when calls to functions seeking elements
2683 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2684 (reported by Tobias Rittweiler)
2685 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2686 directory components now works as it used to. (various prolems reported by
2687 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2688 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2689 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2690 * bug fix: bogus undefined variable warnings from fopcompiled references to
2691 global variables. (thanks to Lars Rune Nøstdal)
2692 * bug fix: foreign function names should now appear in backtraces on
2693 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2694 * bug fix: SETF compiler macro documentation strings are not discarded
2696 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2697 (thanks to Alex Plotnick)
2698 * bug fix: SLEEP accepts large integer arguments, truncating them to
2699 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2700 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2701 * bug fix: compiler notes for expensive slot type checks could be emitted
2702 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2704 changes in sbcl-1.0.29 relative to 1.0.28:
2705 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2706 https://bugs.launchpad.net/sbcl
2707 Bugs can be reported directly there, or by sending email to
2708 sbcl-bugs@lists.sourceforge.net
2709 (no subscription required.)
2710 * minor incompatible change: under weak type checking policy integer
2711 types are weakened less aggressively.
2712 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2713 allowed to return, which causes SBCL to quit with exit status 0. Previously
2714 if the function returned with a small integer return value, that value
2715 was accidentally reused as the exit status.
2716 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2717 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2718 :HASH-FUNCTION argument. Refer to user manual for details.
2719 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2721 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2722 microseconds since the Unix epoch on all platforms.
2723 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2724 allows the compiler to safely elide boundedness checks for special
2726 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2727 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2728 efficiency measure for threaded platforms, but also valueable in
2730 * new feature: UNC pathnames are now understood by the system on Windows.
2731 * optimization: the compiler uses a specialized version of FILL when the
2732 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2734 * optimization: accesses to potentially non-simple arrays where element type
2735 is known are 50% faster.
2736 * optimization: compiler now generates faster array typechecking code.
2737 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2739 * optimization: multidimensional array accesses in the absence of type
2740 information regarding array rank are approximately 10% faster due to
2741 open coding of ARRAY-RANK.
2742 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2743 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2745 * optimization: result of call to VECTOR can now be stack allocated.
2746 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2747 as long as the resulting array is one-dimensional and has a known
2748 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2749 length of the list matches the known length of the vector does not
2750 allocate the list as an intermediate step. Ditto for VECTOR and simple
2752 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2753 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2754 known element type, and is known to be simple and one dimensional.
2755 * improvement: SBCL now emits a compiler note where stack allocation was
2756 requested but could not be provided (not in all cases, unfortunately)
2757 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2758 * improvement: pretty-printing loop has been implemented properly. (thanks
2759 to Tobias Rittweiler)
2760 * documentation: CLOS slot typechecing policy has been documented.
2761 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2762 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2763 pointer, leading to memory faults. (thanks to Bart Botta)
2764 * bug fix: better floating point exception handling on x86/OpenBSD.
2765 (thanks to Josh Elsasser)
2766 * bug fix: exit status from QUIT when called under --script was lost
2767 (reported by Hubert Kauker)
2768 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2769 same implementation of FILL to initialize the array, even if a more
2770 efficient one was available (reported by Stas Boukarev, thanks to
2772 * bug fix: potential miscompilation of array stack allocation on x86 and
2773 x86-64. (reported by Time Tossavainen)
2774 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2775 result in their subforms being treated as top level forms. (reported by
2777 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2778 than a machine register could leave garbage in the high bits of the
2779 result register (bug 316325).
2780 * bug fix: disable address space randomization Linux/x86-64 as well,
2781 not just x86-64. (reported by Ken Olum)
2782 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2783 generate incorrect code.
2784 * bug fix: #201; type inference for CONS and ARRAY types could derive
2785 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2786 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2787 could not be assigned to or bound with PROGV. (reported by Lorenz
2789 * bug fix: the value of CL:- in the inspector was the previous expression
2790 evaluated rather than the expression being evaluated.
2791 * bug fix: constants can no longer be locally declared special.
2792 * bug fix: signals delivered to threads started from foreign land (read:
2793 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2794 thread by blocking all signals and resignalling.
2795 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2796 from :INITFORM, if any.
2798 changes in sbcl-1.0.28 relative to 1.0.27:
2799 * a number of bugs in cross-compilation have been fixed, with the ultimate
2800 result that building under (at least) clisp should be much more reliable.
2801 * minor incompatible changes: echo-streams now propagate unread-char to the
2802 underlying input stream, and no longer permit unreading more than one
2804 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2805 frames, allowing for instance more reliable backtraces.
2806 * improvement: the debugger REPL can now reference lexical variables
2807 by name directly for code compiled with (DEBUG 3).
2808 * improvement: errors from malformed declarations now have better source
2809 paths associated with them. (thanks to Tobias Rittweiler)
2810 * optimization: faster local calls on x86/x86-64
2811 * bug fix: some error messages for out-of-bound array indexes confused the
2812 index and the bound. (thanks to Stas Boukarev)
2813 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2815 * bug fix: running regressions tests in shells without OSTYPE set now works.
2816 (reported by Harald Hanche-Olsen)
2817 * bug fix: more robust static space exhaustion signalling from
2818 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2819 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2820 docstring away instead of storing it under names such as (LAMBDA (X)).
2821 (reported by Leslie Polzer)
2822 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2823 (thanks to Ole Arndt for the patch)
2824 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2825 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2826 potentially-invalid effective methods in its cache.
2827 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2828 instances as well (thanks to Paul Khuong)
2829 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2830 SB-POSIX:WAITPID and their C equivalents.
2831 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2833 changes in sbcl-1.0.27 relative to 1.0.26:
2834 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2835 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2836 * improvement: the system either recovers from stack exhaustion or dies
2837 properly as opposed to leaving the user uncertain of whether the handler
2838 trampled on some random memory next to the stack or having to rely on
2839 --lose-on-corruption (which is still a good idea to use in production
2840 because stack exhaustion can happen in signal handlers which will likely
2842 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2843 1.0.25.37, reported by Harald Hanche-Olsen)
2844 * bug fix: work around signal delivery bug in darwin (regression from
2845 1.0.25.44, reported by Sidney Markowitz)
2846 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2848 changes in sbcl-1.0.26 relative to 1.0.25:
2849 * incompatible change: an interruption (be it a function passed to
2850 INTERRUPT-THREAD or a timer function) runs in an environment where
2851 interrupts can be enabled. The interruption can use
2852 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2853 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2854 potentially running out of stack. Keep in mind that in the absence
2855 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2856 acquiring a lock can enable interrupts.
2857 * incompatible change: GC-OFF and GC-ON are removed, as they were
2858 always unsafe. Use WITHOUT-GCING instead.
2859 * new feature: runtime option --disable-ldb
2860 * new feature: runtime option --lose-on-corruption to die at the
2861 slightest hint of possibly non-recoverable errors: running out of
2862 memory, stack, alien stack, binding stack, encountering a memory
2863 fault, etc. In the absence of --lose-on-corruption a warning is
2865 * enhancement: detect binding stack exhaustion
2866 * enhancement: detect alien stack exhaustion on x86/x86-64
2867 * improvement: generally more stable and reliable interrupt handling
2868 * improvement: there is a per thread interruption queue,
2869 interruptions are executed in order of arrival
2870 * improvement: a repeating timer reschedules itself when the it has
2871 finished, but expiration times are spaced equally. If an
2872 expiration time is in the past it will trigger after a short grace
2873 period that may give a chance to other things to run.
2874 * optimization: slightly faster gc on multithreaded builds
2875 * optimization: faster WITHOUT-GCING
2876 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2877 important locks so that the debugger/handler doesn't produce
2878 recursive errors or deadlock.
2879 * bug fix: real-time signals are not used anymore, so no more
2880 hanging when the system wide real-time signal queue gets full.
2881 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2883 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2884 * bug fix: fix random memory faults related to interrupts on alpha
2885 * bug fix: fix random memory faults related to interrupts on sparc
2886 * bug fix: fix deadlocks related to starting threads
2887 * bug fix: fix deadlines on locks on futex platforms
2888 * bug fix: restore errno in signal handlers
2889 * bug fix: fix deadlocks related to hash tables
2890 * bug fix: fix deadlocks in pcl
2892 changes in sbcl-1.0.25 relative to 1.0.24:
2893 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2894 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2895 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2896 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2897 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2898 better name and does not return values so stale on multiprocessor systems.
2899 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2901 * improvement: unithread builds keep track of MUTEX-VALUE.
2902 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2903 stream anymore making it thread safe to have a concurrent reader and
2904 a writer, for instance, in a pipe.
2905 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2906 arguments, making compiler-macros for SETF-functions able to inspect
2907 their constant arguments.
2908 * improvement: COMPILE-FILE reports times with millisecond accuracy
2909 (thanks to Luis Oliveira)
2910 * optimization: CHAR-CODE type derivation has been improved, making
2911 TYPEP elimination on subtypes of CHARACTER work better. (reported
2912 by Tobias Rittweiler, patch by Paul Khuong)
2913 * bug fix: setting alien structure fields of type struct by value now
2914 computes the right offset for the memory copy.
2915 * bug fix: compilation problem involving inlined calls to aliens with
2916 result type VOID. (reported by Ken Olum)
2917 * bug fix: #235a; sequential inline expasion in different policies no
2918 longer reuses the functional from the previous expansion site.
2919 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2920 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2921 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2922 cause an implied type redefinition. Regression from 1.0.21.29.
2923 * bug fix: sign-extension of small signed return values now works with C
2924 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2925 * improvements to the Windows port:
2926 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2927 Westfold, thanks to Rudi Schlatte)
2929 changes in sbcl-1.0.24 relative to 1.0.23:
2930 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2931 vector of a multidimensional SIMPLE-ARRAY.
2932 * new feature: the system now signals a continuable error if standard
2933 readtable modification is attempted. (thanks to Tobias Rittweiler)
2934 * new feature: DIRECTORY has been extended with a non-standard keyword
2935 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2936 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2937 has been robustified and documented better. (thanks to Robert Goldman)
2938 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2939 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2940 * tradeoff: constant FORMAT control strings are now compiled unless
2941 SPACE > SPEED (previously only when SPEED > SPACE.)
2942 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2944 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2946 * bug fix: lexical type declarations are now correctly reported by
2947 SB-CLTL2. (reported by Larry D'Anna)
2948 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2949 using UTF-8 as external format. (thanks to Luis Oliveira)
2950 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2951 are signalled correctly. (thanks to Stas Boukarev)
2952 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2953 designator. (thanks to Tobias Rittweiler)
2954 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2955 designator, and returns T instead of the function. (thanks to
2957 * bug fix: direct superclasses of STANDARD-CLASS and
2958 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2959 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2960 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2961 when no class with the named slot yet exists no longer causes a
2962 compile-time style-warning.
2963 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2964 in safe code. (reported by Didier Verna)
2965 * bug fix: #430; nested structure constructors can stack allocate.
2966 * bug fix: on some 64-bit platforms dynamic space size was truncated
2967 to #xffff0000 bytes. (reported by Benjamin Lambert)
2968 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2969 REPL unusable. (reported by Daniel Herring)
2970 * bug fix: return values of READ-SEQUENCE did not take :START into
2971 account on file streams, regressions since 1.0.12.22. (reported by
2972 Thomas Russ, patch by Paul Khuong)
2973 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2974 method specializer used to confuse permuation vector optimization.
2975 * bug fix: system inserted bogus implicit type declarations for local
2976 special variables in DEFMETHOD bodies.
2977 * bug fix: #354; duplicated frames in backtraces due to
2978 non-tail-call-optimized XEPs to functions with return type NIL
2980 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2981 initializes structure object slots according to DEFSTRUCT initforms,
2982 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2983 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2984 (reported by Bruno Haible and Stephen Wilson)
2985 * bug fix: #395; fill-pointer output streams used now support
2986 element-type BASE-CHAR as well.
2987 * bug fix: compiler error when attempting to derive return value of
2988 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2990 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2992 * bug fix: Mac OS X binaries should now be portable between Leopard
2995 changes in sbcl-1.0.23 relative to 1.0.22:
2996 * enhancement: when disassembling method functions, disassembly
2997 for the associated fast function is also produced.
2998 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3000 * optimization: printing with *PRINT-PRETTY* true is now more
3001 efficient as long as the object being printed doesn't require
3002 special handling by the pretty printer.
3003 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3004 now interact correctly with type declarations.
3005 * partial bug fix: PCL detects infinite recursion during wrapper
3006 validation. (thanks to Attila Lendvai)
3007 * bug fix: #426; nested function calls are inlined properly.
3008 Previously if FOO was an inline function, in calls of the form
3009 (FOO (FOO ...)) the outer call was not inlined.
3010 * bug fix: long long arguments passed in registers to alien
3011 functions on PowerPC Linux and NetBSD are now handled correctly
3012 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3014 changes in sbcl-1.0.22 relative to 1.0.21:
3015 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3016 for the shared object in the current directory, but passes the native
3017 namestring of the designated pathname to the operation system's shared
3018 object loading function as-it.
3019 * minor incompatible change: --disable-debugger toplevel option now takes
3020 effect before processing of initialization files and --eval or --load
3022 * new feature: new commandline argument: --script, which supports
3023 shebang lines. See documentation for details. (based on work by
3025 * new feature: SAVE-LISP-AND-DIE can save current values of
3026 --dynamic-space-size and --control-stack-size in the executable core,
3027 causing it to skip normal runtime option processing. See documentation
3028 for details. (thanks to Zach Beane)
3029 * enhancement: inoccous calls to EVAL or generic functions dispatching
3030 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3031 * enhancement: the system no longer resignals errors from --load and
3032 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3033 associated with the original error to be lost. (thanks to Ariel
3035 * enhancement: :DONT-SAVE keyword argument has been added to
3036 LOAD-SHARED-OBJECT for controlling interaction with
3037 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3038 the effects of an earlier LOAD-SHARED-OBJECT call.
3039 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3040 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3041 provided. (reported by Cedric St-Jean)
3042 * bug fix: circularity handling in the reader did not treat raw
3043 structure slots correctly. (reported by Cedric St-Jean)
3044 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3045 file descriptors when there were none.
3046 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3047 was broken. (reporteed by Willem Broekema)
3048 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3049 pathnames without a directory.
3050 * bug fix: COMPILE-FILE did not warn about undefined variable
3051 references at toplevel, and LOAD of the resulting fasl did
3052 not signal an error.
3053 * bug fix: functions with non-required arguments used to end up with
3054 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3055 * bug fix: redefining a function with non-required arguments didn't
3056 update the system's knowledge about its call signature properly.
3057 * bug fix: fixed #431; incompatible alien record type redefinitions
3058 are detected and handled. (reported by Neil Haven)
3059 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3060 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3062 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3063 after alien stack frames.
3064 * bug fix: strings passed to mk{s,d}temp lacked null termination
3066 changes in sbcl-1.0.21 relative to 1.0.20:
3067 * new feature: the compiler is able to track the effective type of a
3068 generic function across method addition and removal.
3069 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3070 appropriately typed structure slots without locking.
3071 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3072 information like those gathered by TIME using a programming-friendly
3074 * new feature: TIME reports time taken even if the form performs a
3075 non-local transfer of control.
3076 * enhancement: reduced conservativism on GENCGC platforms: on
3077 average 45% less pages pinned (measured from SBCL self build).
3078 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3079 mutate constant symbols or violate declaimed type of the symbol.
3080 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3081 sleeping on the semaphore in heavily contested semaphores.
3082 * bug fix: semaphores and condition variables were not interrupt
3084 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3085 owned by other threads anymore.
3086 * bug fix: FIND on lists called KEY outside the specified
3087 subsequence. (reported by budden)
3088 * bug fix: LOG doesn't use single-float intermediate results when
3089 given mixed integer and double-float arguments, leading to better
3090 precision. (reported by Bob Felts)
3091 * bug fix: LOG with base zero returned values of inconsistent type.
3093 changes in sbcl-1.0.20 relative to 1.0.19:
3094 * minor incompatible change: OPTIMIZE qualities
3095 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3096 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3097 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3098 * documentation: some slot access efficiency guidelines have been
3099 added to the user manual.
3100 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3101 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3102 as ASSOC and MEMEBER.
3103 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3104 to more efficient EQ-comparison versions more often.
3105 * optimization: enhanced derivation of DOLIST iteration variable type
3107 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3109 * optimization: runtime lookup of function definitions can be
3110 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3111 * optimization: compiler is able to derive the return type of
3112 (AREF (THE STRING X) Y) as being CHARACTER.
3113 * optimization: CLRHASH on empty hash-tables no longer does pointless
3114 work. (thanks to Alec Berryman)
3115 * optimization: REPLACE deftransforms don't punt when :START1 or
3117 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3118 no longer emits a code deletion note. (reported by Andrew
3120 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3121 functions with an odd number of &OPTIONAL arguments, a &REST
3122 argument, and one or more &KEY arguments at the call site.
3123 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3124 arguments appeared at call sites as well.
3125 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3126 READ-LINE &co can no longer read from them afterwards. (reported
3128 * bug fix: fixed #427: unused local aliens no longer cause compiler
3129 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3131 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3132 alien-stack leakage. (reported by Andy Hefner)
3133 * bug fix: PROGV signals an error when an attempt to violate declared
3134 type of a variable or bind a constant is made.
3135 * bug fix: SET signals an error when an attempt to violate declared
3136 type of a variable is made.
3137 * bug fix: restart computation during the execution of a restart
3138 test function no longer causes infinite recursion. (reported by
3140 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3141 signals an error. (thanks to Pierre Mai)
3142 * bug fix: EXPORT left symbol unexported in conflict situations.
3143 (thanks to Michael Weber)
3144 * bug fix: correctly handle name conflicts involving CL:NIL.
3145 (thanks to Michael Weber)
3146 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3147 conflicts arising from USEing package with conflicting symbols
3148 correctly. (thanks to Michael Weber)
3150 changes in sbcl-1.0.19 relative to 1.0.18:
3151 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3152 warnings that go otherwise unhandled will be muffled if they are
3153 of the type that's the value of this variable.
3154 * optimization: stack allocation is slightly more efficient on x86
3156 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3157 where a raw slot always is initialized using the initform whose
3158 type is not know sufficiently well a compile-time are now compiled
3159 correctly. (reported by John Morrison)
3160 * bug fix: compiler no longer makes erronous assumptions in the
3161 presence of non-foldable SATISFIES types.
3162 * bug fix: stack analysis missed cleanups of dynamic-extent
3163 arguments in non-let-converted calls to local functions.
3164 * improvements to the Windows port:
3165 ** adjusted address spaces for building on both Win32 and
3166 Win64. (thanks for John Connors)
3167 * fixed some bugs revealed by Paul Dietz' test suite:
3168 ** interval arithmetic during type derivation used inexact integer
3169 to single-float coercions.
3170 ** arithmetic operations involving large integers and single
3171 floats give the same results in compiled and interpreted code.
3172 ** deriving the result type of COERCE no longer signals an error
3173 if the derived type of the second argument is a MEMBER type
3174 containing invalid type specifiers.
3175 ** ADJOIN with constant NIL as second argument works correctly.
3176 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3178 changes in sbcl-1.0.18 relative to 1.0.17:
3179 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3180 profiles only the current thread.
3181 * minor incompatible change: changes to SYMBOL-VALUE of constants
3182 defined with DEFCONSTANT now signal an error.
3183 * enhancement: SB-SPROF now has support for wallclock profiling,
3184 and is also able to profile specific threads. REPORT output
3185 has also additional sorting options.
3186 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3188 * optimization: structure allocation has been improved
3189 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3190 ** out of line constructors are ~10% faster.
3191 ** inline constructors are ~15% faster.
3192 ** inline constructors are capable of dynamic extent allocation
3193 (generally on x86 and x86-64, in some cases on other platforms
3195 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3197 * optimization: file compiler is now able to coalesce non-circular
3198 lists, non-base strings, and bit-vectors. Additionally, constants
3199 are never referenced through SYMBOL-VALUE at runtime.
3200 * optimization: code defining methods on PRINT-OBJECT (and other
3201 generic functions in the COMMON-LISP package) now loads faster.
3202 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3204 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3205 fasl is now deleted. (reported by Attila Lendvai)
3206 * bug fix: READ-LINE always returned NIL for the last line in files.
3207 (reported by Yoshinori Tahara)
3208 * bug fix: more accurate disassembly annotations of foreign function
3209 calls. (thanks to Andy Hefner)
3210 * bug fix: trimming non-simple strings and non-string string
3211 designators when the there is nothing to trim works properly.
3212 (thanks to James Knight)
3213 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3214 (thanks to Travis Cross)
3215 * fixed some bugs revealed by Paul Dietz' test suite:
3216 ** NIL is a valid function name (regression at 1.0.13.38)
3217 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3218 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3219 fill pointers properly (regression at 1.0.12.23)
3220 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3221 displacement indices properly (regression at 1.0.12.23)
3223 changes in sbcl-1.0.17 relative to 1.0.16:
3224 * temporary regression: user code can no longer allocate closure
3225 variable storage on stack, due to bug 419 without explicitly
3226 requesting it. Please consult sbcl-devel for advice if you need to
3227 use this feature in the meanwhile.
3228 * new feature: runtime argument --control-stack-size can be used to
3229 adjust thread default control stack size.
3230 * enhancement: improved TIME output
3231 ** all times are reported using the measured accuracy (milliseconds
3232 for real and GC times, microseconds for everything else.)
3233 ** processor cycle counts on x86 and x86-64.
3234 ** interpreted forms are counted for both evaluator modes.
3235 ** number of lambdas converted by the compiler is reported.
3236 ** CPU percentage report (computed from real and total run time.)
3237 ** more comprehensive run time reporting, using a condenced format
3238 ** interperted form, lambda, and page fault counts are omitted
3240 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3242 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3243 * optimization: two argument forms of LAST are upto ~10% faster
3244 in normal SPEED policies.
3245 * optimization: NCONC no longer needs to heap cons its &REST list
3246 in normal SPEED policies.
3247 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3248 to Sidney Markowitz)
3249 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3250 regression since 1.0.9.1. (thanks to Eric Marsden)
3251 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3252 since 1.0.15.36. (thanks to Paul Khuong)
3253 * bug fix: LAST when always returned the whole list when given a bignum
3254 as the second argument.
3255 * bug fix: dynamic extent allocation of nested lists and vectors
3256 could leak to otherwise accessible parts.
3257 * bug fix: invalid optimization of heap-allocated alien variable
3259 * bug fix: fasl header checking is less vulnerable to different
3260 platform word lengths.
3261 * bug fix: more correct assembler syntax for GNU binutils
3262 2.18.50.0.4 support. (thanks to Marijn Schouten)
3263 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3265 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3266 declarations) successfully. (reported by Attila Lendvai)
3268 changes in sbcl-1.0.16 relative to 1.0.15:
3269 * minor incompatible change: revert the changes to sb-posix's error
3270 signaling added in 1.0.14.
3271 * minor incompatible change: change PROBE-FILE back to returning
3272 NIL whenever we can't get a truename, as was the case before 1.0.14.
3273 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3274 inherits from ERROR instead of just CONDITION.
3275 * new feature: SB-INTROSPECT can provide source locations for instances
3276 as well. (thanks to Tobias Rittweiler)
3277 * optimization: binding special variables now generates smaller code
3278 on threaded platforms.
3279 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3280 and cases where no :TEST is given but the compiler can infer that
3281 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3282 * optimization: better LOGNOT on fixnums.
3283 * optimization: modular arithmetic for a particular requested width
3284 is implemented using a tagged representation unless a better
3285 representation is available.
3286 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3287 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3288 for wellformedness and returns a specialized vector. (reported by
3289 Francois-Rene Rideau)
3290 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3291 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3292 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3293 unscheduling timer at the same time as another timer fires.
3294 * bug fix: don't reschedule timers for dead threads.
3295 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3296 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3297 bogus errors if select() was interrupted.
3298 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3300 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3301 * enhancement: cleaner backtraces for interactive interrupts, as
3302 well as other cases where the interesting frames used to be
3303 obscured by interrupt handling frames.
3304 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3305 now supported, and tracing a whole package using (TRACE "FOO") now
3306 traces SETF-functions as well.
3307 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3308 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3309 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3310 * unreadably printed representation of hash-tables now includes
3312 * bug fix: partially fixed #188: type propagation from assignments
3313 is now more efficient.
3314 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3315 'DOUBLE-FLOAT) are not flushable.
3316 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3317 full address of the object, and none of the tag bits.
3318 * bug fix: readably printing hash-tables now respects other printer
3319 control variables. (reported by Cedric St-Jean)
3320 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3321 keyword with MAKE-HASH-TABLE.
3322 * bug fix: export SB-POSIX:MKSTEMP.
3323 * bug fix: SORT was not interrupt safe.
3324 * bug fix: XREF accounts for the last node of each basic-block as
3326 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3327 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3328 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3329 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3330 create obsolete instances in the case of redefinition or
3331 obsoletion of a superclass. (thanks to Andy Hefner)
3332 * bug fix: Support for the Alpha architecture has been revived; it had
3333 suffered somewhat from lack of maintenance since sbcl-1.0.
3334 * improvements to the Windows port:
3335 ** The system detects the codepage to use at startup, instead of
3336 using the value from the saved core. (thanks to Kei Suzuki)
3338 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3339 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3340 (see documentation for details.)
3341 * revived support for OpenBSD (contributed by Josh Elsasser)
3342 * partially fixed bug #108: ROOM no longer suffers from occasional
3343 (AVER (SAP= CURRENT END)) failures.
3344 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3345 bodies no longer cause a WARNING to be signalled. (reported by
3347 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3348 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3349 the bug in TRUNCATE.) (reported by Michael Weber)
3350 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3351 no samples. (reported by Andy Hefner)
3352 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3353 no longer appear as (NIL ...) frames in backtraces.
3354 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3355 is now actually exported from SB-EXT as documented. (reported by
3357 * bug fix: sb-aclrepl now correctly understands how to inspect
3358 single-floats on 64-bit platforms where single-floats are not boxed.
3359 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3360 yet been finalized. (reported by Levente Meszaros)
3361 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3362 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3363 SBCL-specific optimize qualities.
3365 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3366 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3367 an executable in the search path, and does so in the child
3368 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3369 been removed; it can be found in the CVS history, for somebody who
3370 needs that search behavior (see the manual).
3371 * minor incompatible change: compiler policy re. weakening type
3372 checks has changed: now type checks are weakened only if SAFETY < 2
3374 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3375 unparsing of directory pathnames as files. Analogously,
3376 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3377 filename to parse into a directory pathname.
3378 * enhancement: implicit generic function creation now signals a
3379 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3380 users can bind handlers for and muffle around calls to LOAD.
3381 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3382 to be used (using the default stream external format), and allows
3383 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3384 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3385 strings and vectors whose element-type or simplicity is not fully
3386 known at compile-time.
3387 * optimization: STRING-TRIM and related functions no longer allocate
3388 a new string when no trimming needs to be performed. These functions
3389 are also faster than before when the input string has been declared
3391 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3392 * optimization: READ-LINE is significantly faster for files containing
3394 * optimization: non-open coded uses of character comparison operators
3395 (e.g. char=) no longer cons when called with more than one parameter
3396 on platforms supporting dynamic-extent allocation.
3397 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3398 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3399 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3401 * bug fix: some sequence functions elided bounds checking when
3403 * bug fix: too liberal weakening of union-type checks when SPEED >
3405 * bug fix: more bogus fixnum declarations in ROOM implementation
3408 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3409 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3410 :SYNCHRONIZED argument, which makes the hash-table safe for
3411 concurrent accesses (but not iteration.) See also:
3412 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3413 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3414 * optimization: CONCATENATE on strings is an order of magnitude faster
3415 in code compiled with (> SPEED SPACE).
3416 * optimization: SUBSEQ is ~50% faster on lists.
3417 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3418 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3419 END is smaller then START.
3420 * bug fix: SB-PROFILE will no longer report extra consing for nested
3421 calls to profiled functions.
3422 * bug fix: ROOM implementation had bogus fixnum declarations which
3423 could cause type-errors when calling ROOM on large images.
3424 * bug fix: if file compilation is aborted, the partial fasl is now
3425 deleted, and COMPILE-FILE returns NIL as the primary value.
3426 * bug fix: number of thread safety issues relating to SBCL's internal
3427 hash-table usage have been fixed.
3428 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3429 be returned from its body when the values were being returned
3430 using unknown-values return convection and the W-P-O was wrapped
3431 inside an UNWIND-PROTECT.
3432 * bug fix: sb-posix should now compile again under Windows, enabling
3433 slime to work again.
3435 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3436 * incompatible change: hash-table accessor functions are no longer
3437 automatically protected by locks. Concurrent accesses on the same hash-table
3438 from multiple threads can give inconsistent results or even corrupt the
3439 hash-table completely. Multi-threaded applications should do their own
3440 locking at the correct granularity. In the current implementation it is
3441 still safe to have multiple readers access the same table, but it's not
3442 guaranteed that this property will be maintained in future releases.
3443 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3444 and will signal an error at runtime.
3445 * enhancement: SB-THREAD package now exports a semaphore interface.
3446 * enhancement: CONS can now stack-allocate on x86 and
3447 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3449 * enhancement: nested lists can now be stack allocated on
3450 platforms providing stack allocation support.
3451 * enhancement: dynamic-extent support has been extended to support
3452 cases where there are multiple possible sources for the stack
3454 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3455 if the mutex is uncontested on Linux.
3456 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3457 as specified by the CLHS. (thanks to Tobias Rittweiler)
3458 * bug fix: NaN comparison now works on x86-64.
3459 * bug fix: CLOSE :ABORT T on a stream with pending output now
3461 * bug fix: instances of non-standard metaclasses using standard
3462 instance structure protocol sometimes missed the slot type checks
3464 * bug fix: known functions can be inlined in high-debug code.
3466 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3467 * minor incompatible change: the MSI installer on Windows no longer
3468 associates .lisp and .fasl files with the installed SBCL.
3469 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3470 on Windows. (thanks to Luis Oliviera)
3471 * new feature: SB-CLTL2 contrib module now implements
3472 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3473 * optimization: scavenging weak pointers is now more efficient,
3474 requiring O(1) instead of O(N) per weak pointer to identify
3475 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3476 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3477 method bodies using constant slot-names when the first argument is
3478 a specializer parameter for the method.
3479 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3480 names, when the class of the instance is a direct instance
3481 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3482 as slow as the constant slot-name case.)
3483 * optimization: member type construction is now O(N) instead
3485 * optimization: UNION and NUNION are now O(N+M) for large
3486 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3488 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3489 now more readable in environments like Slime which display it.
3490 (thanks to Tobias C. Rittweiler)
3491 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3492 was able to infer the correct argument type for the object on which
3493 the CAS operation was being performed.
3494 * bug fix: copy propagation interfered with parallel assignment
3495 semantics in local calls. (reported by Paul Khuong)
3496 * bug fix: the signed modular fixnum shift compiled to wrong code on
3497 x86 and x86-64. (spotted by a slight modification to some of
3500 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3501 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3502 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3503 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3505 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3506 and generic function now print the object identity for anonymous
3507 instances. (thanks to Attila Lendvai)
3508 * enhancement: as an extension to MOP, SBCL now supports SETF of
3509 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3510 (thanks to Attila Lendvai)
3511 * enhancement: sb-cover has an alternate annotation mode which puts
3512 the form annotations at the car of the form, instead of annotating
3513 it completely. The benefit of this mode is that it shows better
3514 which forms were instrumented by the compiler.
3515 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3516 by printer control variables. (reported by Dan Corkill)
3517 * bug fix: system leaked memory when delayed output was performed by
3518 the OS in smaller chunks then expected. (thanks to David Smith)
3519 * bug fix: system leaked memory when file streams were not closed
3521 * bug fix: large objects written to slow streams that were modified
3522 after the write could end up with the modified state written to
3523 the underlying file descriptor.
3524 * bug fix: multiple threads operating in parallel on the same stream
3525 could cause buffer-overflows.
3526 * bug fix: source location information is stored correctly
3527 (broken since 1.0.6). This bug would generally show up as the
3528 Slime debugger highlighting the wrong form when the sldb-show-source
3530 * bug fix: Branch forms are again annotated as branches in the sb-cover
3532 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3533 on x86-64. (reported by Gregory Vanuxem)
3534 * bug fix: EQUALP could return wrong results for structures with raw
3535 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3536 word). (reported by Vjacheslav Fyodorov)
3537 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3540 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3541 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3542 atomic compare-and-swap operations on threaded platforms.
3543 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3544 allows assigning a global minimum value to optimization qualities
3545 (overriding proclamations and declarations).
3546 * enhancement: closed over variables can be stack-allocated on x86
3548 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3550 * optimization: slot definition lookup is now O(1). This speeds up
3551 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3552 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3553 * optimization: ASSOC and MEMBER can now be open-coded for all
3554 combinations of keyword arguments when second argument is constant
3555 and SPEED >= SPACE. In other cases a specialized version is
3557 * bug fix: using obsoleted structure instances with TYPEP and
3558 generic functions now signals a sensible error.
3559 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3560 (reported by Kristoffer Kvello)
3561 * bug fix: backtrace construction is now more careful when making
3562 lisp-objects from pointers on the stack, to avoid creating bogus
3563 objects that can be seen by the GC.
3564 * bug fix: defaulting of values in contexts expecting more than 7
3565 variables now works on x86-64. (reported by Christopher Laux)
3566 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3568 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3569 as the property-list of a symbol.
3570 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3571 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3572 situations requested, are once again file-compileable. (reported
3575 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3576 * MOP improvement: support for user-defined subclasses of
3577 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3578 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3579 the expansion of DEFMETHOD, is responsible for generating a form
3580 which creates a list of specializers when evaluated. Additional
3581 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3582 debugging and introspective support.
3583 * minor incompatible change: the (unsupported) spinlock interface
3584 has changed: free spinlock now has the value NIL, and a held spinlock
3585 has the owning thread as its value.
3586 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3587 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3589 * enhancement: name of a socket-stream is now "a socket" instead of
3590 "a constant string".
3591 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3592 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3593 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3594 for generic functions. (Thanks to Tobias C. Rittweiler)
3595 * optimization: bignum printing speed has been improved by 20-40%
3596 (depending on the bignum size.)
3597 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3599 * bug fix: the cache used by the CLOS to store precomputed effective
3600 methods, slot offsets, and constant return values is now thread and
3602 * bug fix: generic function dispatch function updating is now thread
3603 and interrupt safe (in the sense that the known issues have been
3605 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3606 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3607 * bug fix: asdf systems with dependencies to the SB-POSIX or
3608 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3609 * bug fix: interrupt safety of applicable method computation has been
3612 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3613 * new contrib: sb-cover, an experimental code coverage tool, is included
3614 as a contrib module.
3615 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3616 significantly faster.
3617 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3618 produce more efficient code on x86-64 if the compiler can determine
3619 that (+ INDEX <constant>) does not require a bounds check and FOO
3620 has an element type at least 8 bits wide.
3621 * enhancement: a new, experimental synchronous timeout facility is
3622 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3623 * enhancement: when a symbol name conflict error arises, the
3624 conflicting symbols are always printed with a package prefix.
3625 (thanks to Kevin Reid)
3626 * enhancement: stepping is now once again supported on the SPARC and
3627 MIPS platforms. (It is also now more likely to work on CheneyGC
3629 * enhancement: sb-sprof can now also track and report accurate call
3631 * bug fixes: the treatment of non-standard subclasses of
3632 SB-MOP:SPECIALIZER is more correct.
3633 * incompatible change: PURIFY no longer copies the data from the
3634 dynamic space into the static and read-only spaces on platforms
3635 that use the generational garbage collector
3636 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3638 * bug fix: GC race condition occasionally resulting in crashes with
3639 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3641 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3643 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3644 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3645 * bug fix: an asynchronous interrupt could previously leave the
3646 system running with GC inhibited.
3647 * bug fix: a DECLARE form evaluated at top-level now causes an error
3648 rather than silently (or verbosely) returning NIL.
3649 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3650 result in a error being signalled due to source form lookup errors.
3651 (reported by Peter Graves)
3653 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3654 * incompatible change: removed writer methods for host-ent-name,
3655 host-ent-addresses -- changing the values did not update the DNS
3657 * minor incompatible change: changed experimental JOIN-THREAD interface
3658 * documentation: the manual now lists reader and writer methods
3659 in class slot documentation sections. (thanks to Richard M Kreuter)
3660 * documentation: unwinding from asyncronous events has been
3661 documented as unsafe.
3662 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3663 in multithreaded application code.
3664 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3665 platforms. (thanks to James Anderson for the optimization hint)
3666 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3668 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3669 variants no longer cons.
3670 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3671 their NOT- variants no longer cons.
3672 * optimization: EQUAL hash tables no longer use SXHASH for objects
3673 of all data types, but instead use an EQL hash for types for which
3674 EQUAL is the same as EQL.
3675 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3676 are significantly faster.
3677 * optimization: new STRING-OUTPUT-STREAM implementation is much
3678 faster for large outputs and conses 30% less on average.
3679 * enhancement: XREF information is now collected for references made
3680 to global variables using SYMBOL-VALUE and a constant argument.
3681 * enhancement: SIGINT now causes a specific condition
3682 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3683 * bug fix: FILE-POSITION used to signal an error in some cases where
3684 ANSI requires it to return NIL.
3685 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3686 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3687 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3689 * bug fix: bad type declaration in the CLOS implementation has
3690 been fixed. (reported by James Anderson)
3691 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3692 (thanks to Lutz Euler)
3693 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3694 required by the CLHS. (reported by Samium Gromoff)
3695 * bug fix: dead unbound variable references now signal an error.
3696 (reported by Marco Monteiro)
3697 * bug fix: / with an unused value was being deleted in safe code.
3698 (thanks to Marco Monteiro and Kevin Reid)
3699 * bug fix: number of characters that can be written onto a single
3700 line in a file is unlimited.
3701 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3702 been fixed by inhibiting interrupts for when GC is disabled.
3703 * bug fix: some interrupt safety issues with GETHASH, (SETF
3704 GETHASH), CLRHASH and REMHASH have been fixed.
3705 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3706 specifier no longer causes infinite recursion.
3707 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3708 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3709 * bug fix: an &environment argument with the correct variable information
3710 is passed to macros that are expanded during byte compilation.
3711 (reported by Samium Gromoff)
3712 * bug fix: a logic error was causing the hash function for bignums to
3713 have excessive amounts of collisions. (reported by Faré Rideau)
3714 * bug fix: modifying the contents of an array could change the return
3715 value of SXHASH on that array, which is only allowed for strings
3716 and bit vectors. (bug introduced in 0.9.16)
3717 * improvement: the x86-64/darwin port now passes all tests (except
3718 for the debugger tests) but should still be considered
3719 experimental until this is fixed.
3720 * improvement: a style-warning is signaled for CASE (etc) clauses with
3721 duplicate keys. (thanks to Kevin Reid)
3722 * improvement: macos/x86 and macos/x86-64 now use mach exception
3723 handlers for dealing with illegal instructions (for trapping and
3724 error handling) and memory protection violations (for GC).
3726 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3727 * new platform: experimental support for x86-64/darwin (MacOS).
3728 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3729 and getnameinfo sockets functions are used instead of gethostbyaddr
3730 and gethostbyname, on platforms where the newer functions are available.
3731 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3733 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3734 don't print the startup banner, but behave as if --noinform was passed
3735 as a command line argument. (thanks to Kevin Reid)
3736 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3737 * optimization: code using alien values with undeclared types is much faster.
3738 * optimization: the compiler is now able to open code SEARCH in more cases.
3739 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3740 * bug fix: using standardized COMMON-LISP special variables as loop
3741 variables no longer signals bogus package lock violations. (reported
3743 * bug fix: declaring local loop variables to be of a range-limited type
3744 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3745 (reported by Andras Simon)
3746 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3747 bugs remain on x86-64.)
3748 * bug fix: the #= and ## reader macros now interact reasonably with
3749 funcallable instances.
3750 * bug fix: type-checks for function arguments were compiled using the
3751 compiler policy settings of the wrong lexical environment (in 1.0.2
3753 * bug fix: SHADOW accepts characters as string designators, as required
3754 by the spec (thanks to Eric Marsden)
3755 * bug fix: fixed GC safety issues when foreign functions are called with
3756 non-base strings as arguments
3757 * bug fix: more consistent error output for fatal-compiler-warnings, like
3759 * bug fix: functions with proper names were showing up as NIL in
3760 backtraces (reported by Edi Weitz, regression in 1.0.2)
3762 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3763 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3764 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3765 produce more efficient code on the x86 if the compiler can determine
3766 that (+ INDEX <constant>) does not require a bounds check and FOO
3767 has an element type at least 8 bits wide.
3768 * bug fix: references to undefined variables are handled the same way
3769 in toplevel forms as in the normal compiler
3770 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3772 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3773 (thanks to Jon Buller)
3774 * improvement: faster compilation times for complex functions
3775 * improvement: added readlink support to SB-POSIX (thanks to Richard
3778 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3779 * improvement: experimental support for mach exception handling on
3780 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3782 * improvement: support for GBK external format.
3783 (thanks to Chun Tian (binghe))
3784 * improvement: the debugger now displays variables that have been closed
3785 over, in code compiled with (DEBUG 2) or higher
3786 * improvement: support for executable cores on NetBSD (thanks to
3788 * new feature: added a RESTART-FRAME debugger command
3789 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3790 be used to provide an implementation for FILE-POSITION on Gray streams
3791 (thanks to Eric Marsden)
3792 * new feature: add syslog, openlog and closelog support to SB-POSIX
3793 (thanks to Richard Kreuter)
3794 * optimization: the function call overhead in code compiled with
3795 a high DEBUG optimization setting is significantly
3796 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3797 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3798 (thanks to Tony Martinez)
3799 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3800 evaluated once (reported by Kevin Reid)
3801 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3802 works again (thanks to Kilian Sprotte)
3803 * bug fix: an error is signaled for tagbodies with duplicate tags
3804 (thanks to Stephen Wilson)
3805 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3806 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3807 stack frames from alien callbacks.
3808 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3809 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3810 65k pages (thanks to David Woodhouse)
3811 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3813 changes in sbcl-1.0.1 relative to sbcl-1.0:
3814 * new platform: FreeBSD/x86-64, including support for threading.
3815 * new feature: the compiler stores cross-referencing information
3816 about function calls (who-calls), macroexpansion (who-macroexpands)
3817 and special variables (who-binds, who-sets, who-references) for code
3818 compiled with (< SPACE 3). This information is available through the
3819 sb-introspect contrib.
3820 * new feature: users may subclass SEQUENCE, and have instances of
3821 these classes interoperate with standard Common Lisp functions if
3822 a number of methods are defined. (This feature is experimental
3823 and the interface subject to change based on feedback from SBCL
3824 users and the general community)
3825 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3826 x86/x86-64, rather than the previous fixed depth of 8
3827 * improvement: another pthread back-end of mutex "pthread-futex".
3828 * bug fix: non-ascii command-line arguments are processed correctly
3829 (thanks to Yaroslav Kavenchuk)
3830 * bug fix: non-required arguments were not passed correctly when a method
3831 defined using DEFMETHOD was called from a mop-generated method using
3832 CALL-NEXT-METHOD (reported by Pascal Costanza)
3833 * bug fix: recursion is now permitted in accessors through
3834 SLOT-UNBOUND. (reported by Pascal Costanza)
3835 * bug fix: an error was signaled at startup if the HOME environment
3836 variable was defined, but had an empty value (reported by Peter Van Eynde)
3837 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3838 signal a PROGRAM-ERROR, not a BUG.
3839 * bug fix: SB-POSIX:READDIR works when built with large file support.
3840 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3842 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3843 for better automatic indentation support. (thanks to Matt Pillsbury)
3844 * optimization: loading generic functions no longer takes O(n^2) time,
3845 proportional to the amount of methods in the generic function
3846 (reported by Todd Sabin and Jeremy Brown)
3847 * optimization: the FIND and POSITION family of sequence functions
3848 are significantly faster on arrays whose element types have been
3850 * improvements to the Windows port:
3851 ** Intermittent heap corruption problems have been fixed. (thanks
3852 to Alastair Bridgewater)
3853 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3855 ** Lisp is able to unwind foreign exception frames from alien
3856 callbacks. (thanks to Alastair Bridgewater)
3858 changes in sbcl-1.0 relative to sbcl-0.9.18:
3859 * improvement: experimental support for threading on FreeBSD/x86.
3860 (thanks to NIIMI Satoshi)
3861 * improvement: runtime option --dynamic-space-size can be used
3862 to set the size of the dynamic space reserved on startup.
3863 * improvement: floating point modes in effect are now saved in
3864 core, and restored on startup.
3865 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3866 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3867 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3868 threads are not running after *SAVE-HOOKS* have run.
3869 * improvement: writes to CLOS instance slots are type-checked in code
3870 compiled with (SAFETY 3)
3871 * improvement: floating-point exception handling on FreeBSD (thanks to
3873 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3874 (thanks to Zach Beane)
3875 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3877 * improvement: added support for the Shift-JIS external format.
3878 (contributed by NIIMI Satoshi)
3879 * improvement: callbacks are supported on Linux/PPC. (thanks to
3881 * bug fix: compiler bug triggered by a (non-standard) VALUES
3882 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3883 * bug fix: file compiler no longer confuses validated and already
3884 dumped structurres. (reported by Kaersten Poeck)
3885 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3886 fill-pointer signals a type-error as required. (thanks to
3888 * bug fix: disassemly of funcallable instances works.
3889 * bug fix: single stepping on PPC.
3890 * bug fix: fix thread-safety problems in the type system (generally
3891 manifesting as nonsensical errors like "STRING is a bad type specifier
3892 for sequences" or "The value 1 is not of type FIXNUM")
3893 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3894 (reported by Josip Gracin)
3895 * bug fix: an error is signaled for attempts to displace arrays with
3896 incompatible element types (thanks to Mario Mommer)
3897 * bug fix: more correct handling of wide characters in debug info
3898 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3899 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3900 and don't cause extra consing
3901 * optimization: MAP and MAP-INTO are significantly faster on vectors
3902 whose elements types have been declared.
3903 * Improvements to SB-SPROF:
3904 ** Support for allocation profiling
3905 ** Reduced profiling overhead, especially for long profiling runs
3906 * Improvements to the Windows port:
3907 ** floating point exceptions are now reported correctly.
3908 ** stack exhaustion detection works partially.
3909 ** more accurate GET-INTERNAL-REAL-TIME.
3910 ** better RUN-PROGRAM behaviour in case of errors in the child
3912 ** PROBE-FILE now simplifies pathnames correctly.
3913 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3914 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3915 1st 1970 (although time timezone data will be unreliable).
3916 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3918 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3919 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3920 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3922 * bug fix: two potential GC deadlocks affecting threaded builds.
3923 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3924 returns T (reported by Anton Kazennikov)
3925 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3926 with non-variable places
3927 * bug fix: remove a race condition in the setting of
3928 funcallable-instance functions, this should make threaded CLOS
3929 code more stable against memory faults.
3930 * bug fix: corruption of specials when unbinding is interrupted by an
3931 asynchronous unwind (reported by Hannu Koivisto)
3932 * improvement: the debugger will now also display local variables that
3933 are only used once, for code compiled with a DEBUG optimization quality
3936 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3937 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3938 * incompatible change: External-format support for FFI calls. The
3939 SB-ALIEN:C-STRING no longer implies an ASCII
3940 external-format. Instead the string is subject to external-format
3941 conversion. Additionally return values of type SB-ALIEN:C-STRING
3942 are by default of type (SIMPLE-ARRAY CHARACTER), not
3943 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3944 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3945 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3946 * incompatible change: SB-EXT package no longer contains the
3947 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3948 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3950 * incompatible change: the single-stepper is no longer available
3951 on Alpha, Mips and Sparc platforms.
3952 * minor incompatible change: the direct superclasses of
3953 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3954 not (STANDARD-OBJECT FUNCTION). This makes the
3955 class-precedence-lists of GENERIC-FUNCTION and
3956 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3958 * minor incompatible change: the default stream external format on
3959 non-unicode SBCL is no longer detected from the locale, but is always
3961 * new feature: Add a version of evaluator that uses an interpreter instead
3962 of the compiler. EVAL still uses the compiler by default, to switch it
3963 to use the interpreter, set the value of the variable
3964 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3965 * minor incompatible change: the single-stepper REPL has been merged
3966 with the normal debugger (see the "Stepping" heading of the debugger help
3967 for more details). The debugger command STEP will no longer switch
3968 to the single-stepper REPL.
3969 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3970 for a type now works.
3971 * bug fix: loading of default sysinit file works. (thanks to Leonid
3973 * bug fix: better detection of circularities in the file-compiler.
3974 (reported by Marco Monteiro)
3975 * bug fix: the CL pathname functions now work with files that have
3976 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3977 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3978 systems with Unix98 pty semantics.
3979 * bug fix: ASDF-INSTALL will now work with bsd tar.
3980 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3982 * bug fix: timers expiring in dead threads no longer cause a
3983 type-error (reported by Paul "Nonny Mouse").
3984 * bug fix: thanks to more lightweight single-stepper instrumentation,
3985 code compiled with (DEBUG 3) will compile and execute significantly faster,
3986 and will have more accurate type-inferencing than before
3987 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3988 whose bindings are modified
3989 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3990 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3991 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3992 CL:SOFTWARE-VERSION with proper version
3994 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3995 * feature: implemented the READER-METHOD-CLASS and
3996 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3997 as specified by AMOP.
3998 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4000 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4001 (thanks to Lutz Euler)
4002 * optimization: hashing of general arrays and vectors has been
4003 improved. (reported by Any Fingerhut)
4004 * enhancement: SB-INTROSPECT is now able to find definitions of
4005 profiled functions. (thanks to Troels Henriksen)
4006 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4007 as well, allowing compiler-macros for SETF-functions to expand.
4008 * enhancement: step-instrumentation no longer wraps known
4009 single-value functions with multiple-value context, allowing
4010 better type inference.
4011 * fixed bug #337: use of MAKE-METHOD in method combination now works
4012 even in the presence of user-defined method classes. (reported by
4013 Bruno Haible and Pascal Costanza)
4014 * fixed bug #339(c): if there are applicable methods not part of any
4015 long-form method-combination group, call INVALID-METHOD-ERROR.
4016 (reported by Bruno Haible)
4017 * fixed bug #361: the :FUNCTION initarg in the protocol for
4018 initialization of methods can now be used to override
4019 internally-produced optimized functions. (reported by Bruno
4021 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4022 system-provided lambda expression no longer cause warnings about
4023 unbound #:|pv-table| symbols.
4024 * bug fix: improved the handling of type declarations and the
4025 detection of violations for keyword arguments with non-constant
4027 * bug fix: potentially erronous calls to PATHNAME and
4028 MERGE-PATHNAMES were being flushed in some cases.
4029 (reported by Richard Kreuter)
4030 * bug fix: compiled calls to TYPEP were mishandling obsolete
4031 instances. (reported by James Bielman and Attila Lendvai)
4032 * bug fix: format strings with ~> without matching ~< no longer
4033 trigger an AVER, but signal an understandable error instead.
4034 (reported by Antonio Martinez)
4035 * bug fix: specifying an output-file without a pathname-type for
4036 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4037 of input-file instead of "fasl". (reported by Robert Dodier)
4038 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4039 (reported by James Y Knight).
4040 * bug fix: compiler-macros-function did not consider the environment
4041 argument for shadowing by local functions.
4042 * bug fix: compiler-macros expansion was inhibited by local INLINE
4044 * bug fix: inline expansions of known functions were subject to
4045 step-instrumentation in high debug policies, leading to problems
4046 with type-inference.
4047 * bug fix: compiler failed to differentiate between different CONS
4048 types in some cases.
4049 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4050 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4051 * bug fix: #368: incorrect use of expressed vs. upgraded array
4053 * bug fix: #306a: more precise unions of array types.
4054 * thread-safety improvements:
4055 ** CONDITION-WAIT could return early on Linux, if the thread was
4056 interrupted and subsequently continued with SIGCONT.
4057 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4059 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4060 * added support for the ucs-2 external format. (contributed by Ivan
4062 * minor incompatible change: pretty printing of objects of type
4063 (cons symbol) is, in the default pprint-dispatch-table, now
4064 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4066 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4067 called later in a class's lifetime, possibly as late as when the
4068 first instance of the class is created. Previously,
4069 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4070 class became finalizeable.
4071 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4072 for multibyte external-format streams. (thanks to "vbzoli")
4073 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4074 with :ALLOCATION :CLASS inherited from superclasses of the
4076 * fixed bug: anonymous classes can now be created using the :NAME
4077 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4078 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4079 * fixed bug: core-files saved with :EXECUTABLE T can again be
4080 executed when SBCL_HOME isn't set. (reported by James Knight)
4081 * fixed bug: toplevel LOCALLY forms with declarations could
4082 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4083 * fixed bug: printing from several different threads using different
4084 values of *print-case* could cause invalid output, due to
4085 some internal special variables of the printer not being bound
4086 thread-locally (reported by Max Mikhanosha)
4087 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4088 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4089 (reported by Pascal Costanza)
4090 * fixed bug: FINALIZE-INHERITANCE is called from
4091 REINITIALIZE-INSTANCE on classes when the class has previously
4092 been finalized, as required by AMOP.
4093 * minor code generation optimizations:
4094 ** better register allocation in CLOS dispatching functions
4095 ** overflow detection when coercing signed bytes to fixnums on x86-64
4096 ** is now implemented with one IMUL instruction instead of three shifts
4097 ** more efficient bit-vector access on x86 and x86-64
4098 ** more efficient access to raw structure slots on x86 and x86-64
4099 * fixed some bugs revealed by Paul Dietz' test suite:
4100 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4101 return its argument.
4103 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4104 * feature: thread support on Solaris/x86, and experimental thread support
4106 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4108 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4109 default method for SLOT-UNBOUND.
4110 * minor incompatible change: prevent the user from specializing the
4111 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4112 somewhat counter to the intent of the protocol, I (CSR) think, and
4113 additionally it just doesn't work in SBCL as currently
4114 implemented, thanks to optimizations (that are always valid for
4115 the other three SLOT-VALUEish functions, but not for the setter).
4116 * minor incompatible change: the :SB-LDB feature is now enabled by
4117 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4118 the low-level debugger.
4119 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4120 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4121 down to an SB-SYS:FD-STREAM, allowing direct communication in
4122 more cases. Temporary files and pipes are still used as a fallback
4124 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4125 on the non-reentrant C functions localtime(3) and gmtime(3).
4126 * bug fix: global optimization policy was not visible in LOCALLY and
4128 * bug fix: class objects can be used as specializers in methods.
4129 (reported by Pascal Costanza)
4130 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4131 with a type error. (reported by blitz_ on #lisp)
4132 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4133 failed with a type error. (reported by Pascal Bourguignon)
4134 * bug fix: merging pathnames against defaults with :DIRECTORY
4135 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4136 (reported by James Y Knight)
4137 * bug fix: saving large (>2GB) cores on x86-64 now works
4138 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4139 constant index and a (simple-array (signed-byte 32)) array
4140 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4141 error (patch by Robert J. Macomber)
4142 * feature: TIME now displays the amount of run-time spent in GC
4143 * bug fix: The debugger now does a better job of respecting
4144 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4145 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4146 workaround for bug 403.)
4147 * bug fix: floating point exception handling now works on FreeBSD
4148 (thanks to NIIMI Satoshi)
4149 * fixed some bugs revealed by Paul Dietz' test suite:
4150 ** MISC.641: LET-conversion were not supposed to work in late
4152 * improvements to the Win32/x86 port:
4153 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4154 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4156 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4157 * new feature: source path information is generated for macro-expansion
4158 errors for use in IDE's like Slime (thanks to Helmut Eller)
4159 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4160 * bug fix: compiler does not loop forever on an invalid type in
4162 * improvement: compilation of most CLOS applications is significantly
4164 * optimization: added a limited bytecode compiler for simple toplevel
4165 forms, speeding up compilation and FASL loading
4166 * bug fix: the statistical profiler now properly distinguishes anonymous
4169 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4170 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4171 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4172 into subclasses of the finalized class. Now user calls to
4173 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4174 system return before any subclasses are finalized.
4175 * minor incompatible change: The reader no longer ignores errors
4176 regarding non-existent packages in #+ and #- feature tests.
4177 * new feature: command line options --no-sysinit, --no-userinit to
4178 inhibit loading the corresponding init files
4179 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4180 for sending data through UDP sockets (thanks to François-René Rideau)
4181 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4182 error is signalled instead (thanks to François-René Rideau)
4183 * minor incompatible change: Error signalling behaviour of lexical
4184 operations violating package locks has changed slightly. Refer to
4185 documentation on package locks for details.
4186 * enhancement: EVAL can process IF-expressions without resorting to the
4188 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4189 constant-folded properly due to missing out-of-line functions.
4190 (reported by Mika Pihlajamäki)
4191 * bug fix: LISTEN sometimes returned T even in cases where no data was
4192 immediately available from the stream
4193 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4194 were reversed. (reported by Levente Mészáros)
4195 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4196 when given a vector displaced to an adjustable array. (reported
4198 * bug fix: derivation of float boundaries from numbers outside the
4199 appropriate float range (reported by John Wiseman)
4200 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4202 * bug fix: precomputing cache entries for generic functions with
4203 some subclasses of specializers as yet invalid does not attempt to
4204 fill a cache line with a negative offset. (reported by Levente
4206 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4207 allow condition class objects as arguments to DOCUMENTATION and
4208 (SETF DOCUMENTATION); only find and set documentation for
4209 structure names for the STRUCTURE doc-type. (suggested by Gary
4211 * improvements to the Win32/x86 port:
4212 ** (user-homedir-pathname) and default initialization file
4213 locations now know about the user's "Documents and Settings"
4214 directory (thanks to Yaroslav Kavenchuk)
4215 ** run-program is implemented (thanks to Mike Thomas)
4216 ** sockets support (thanks to Timothy Ritchey)
4217 ** better backtrace support (thanks to Alastair Bridgewater)
4218 ** sb-grovel supported
4219 ** asdf-install and sb-posix work somewhat
4220 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4221 * improvements to the Solaris/x86 port:
4222 ** works on Solaris 11/Solaris Express
4223 ** floating-point exception handling support
4224 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** REMOVE-METHOD returns its generic function argument even when
4227 the method is not one of the generic functions' methods.
4228 ** objects declared as MEMBER types can be admissible arguments to
4229 structure accessors.
4230 ** printing characters should simply be printed by the FORMAT ~:C
4232 ** compiler failure when compiling functions with hairy constant
4233 defaults for optional parameters.
4234 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4235 function, which is already optimized.
4237 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4238 * new platform: experimental support for SBCL x86/Darwin, including
4239 MacOS X 10.4.5 on Intel.
4240 * new feature: Unicode character names are now known to the system
4241 (through CHAR-NAME and NAME-CHAR).
4242 * new feature: the filesystem location of SBCL's core file is
4243 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4244 * minor incompatible change: the contrib modules SB-POSIX and
4245 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4246 this change is to make it easier to distribute
4247 location-independent binaries.
4248 * bug fix: as implied by AMOP, standardized classes no longer have
4249 slots named by external symbols of public packages. (reported by
4251 * optimization: calling functions via constant symbols -- as in
4252 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4253 via the function object as in (FUNCALL #'FOO).
4254 * optimization: on x86 and x86-64, the calling convention for the
4255 case of dealing with an unknown number of values has been altered
4256 to be friendlier to the prediction heuristics implemented,
4257 particularly with reference to CALL and RET pairing. (thanks to
4258 Alastair Bridgewater)
4259 * optimization: on x86, the code for access to thread-local symbol
4260 values and binding/unbinding of thread-local symbols is smaller.
4261 (thanks to Alastair Bridgewater)
4262 * enhancement: CONSTANTP is now able to determine constantness of
4263 more complex forms, including calls to constant-foldable standardized
4264 functions and some special forms beyond QUOTE.
4265 * fixed bug: occasional GC crashes on Solaris/x86
4266 * optimization: x86-64 supports stack allocation of results of simple
4267 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4268 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4269 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4270 (thanks to James Knight)
4271 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4272 by the standard (thanks to Stephen Compall)
4274 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4275 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4276 be used for bundling the runtime and the core file into one
4277 executable binary. This feature is not currently supported on all SBCL
4278 platforms. (thanks to James Bielman and NIIMI Satoshi)
4279 * new feature: a generational or ephemeral garbage collector is now
4280 the default on the PowerPC platform (both Linux and Darwin). The
4281 old Cheney (stop and copy) collector is a build-time option.
4282 (thanks to Cyrus Harmon, after Raymond Toy)
4283 * minor incompatible change: the method by which SBCL finds its
4284 contributed modules has changed; it no longer relies on symbolic
4285 links from an $SBCL_HOME/systems directory, but searches directly
4286 in the subdirectories of $SBCL_HOME.
4287 * enhancement: the dynamic heap size on the Linux/PPC platform is
4288 markedly larger, even using the older Cheney garbage collector.
4289 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4290 certain complicated string types. (reported by Gary King)
4291 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4292 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4293 * fixed bug: DOCUMENTATION on structures no longer signals an
4294 error if no structure type of the right name exists. (reported by
4296 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4297 applicable non-standard primary or :AROUND method on
4298 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4299 no longer cause unbound variable errors. (reported by Kevin Reid)
4300 * fixed bug: metacircle resolution in cases where methods have slots
4301 added before the slots from STANDARD-METHOD. (reported by Jean
4303 * fixed bug: the Power PC assembly code for calling into lisp
4304 sometimes computed its return address wrongly (depending on the
4305 15th bit of the address, fixed at link time). This used to
4306 manifest itself in a segmentation violation while building PCL.
4307 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4308 many others over the years)
4309 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4310 the stack pointer (treated as a signed integer) is negative.
4311 (thanks to Peter van Eynde)
4313 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4314 * new platform: experimental support for the Windows operating
4315 system has been added. (thanks to Alastair Bridgewater)
4316 * fixed several bugs in and robustified the PPC FFI (including
4317 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4318 * bug fix: allow non-simple string symbol names (reported by Paul
4320 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4322 * bug fix: saving a core corrupted callbacks on x86/x86-64
4323 * bug fix: closed a loophole in metacircularity detection and
4324 grounding in the PCL implementation of CLOS.
4325 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4326 (reported by tomppa on #lisp)
4327 * bug fix: clear the direction flag on Lisp -> C transitions, as
4328 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4329 (reported by Andrej Grozin and Hendrik Maryns)
4330 * optimization: major improvements to GC efficiency on GENCGC platforms
4331 * optimization: faster implementation of EQUAL
4332 * optimization: emit more efficient opcodes for some common
4333 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4334 * optimization: several other minor code-generation improvements on x86-64
4335 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4337 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4338 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4339 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4340 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4341 by ANSI as a generic function, and for consistency (SETF
4342 GENERIC-FUNCTION-NAME) is treated likewise.
4343 * fixed bug #233.b: make constraint propagation notice when a variable
4344 value is changed after it is referenced but before it is used
4345 * fixed bug #296: no more arbitrary behaviour from filenames with
4346 odd characters as --load arguments. (reported by Adam Warner)
4347 * fixed bug #390: :CHARACTER-SET pathname components now work as
4348 expected. (reported by Tim Daly Jr)
4349 * fixed bug #391: complicated :TYPE intersections in slot
4350 definitions no longer cause an error in PCL internals.
4351 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4352 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4353 returning the number of octets which would be written to the
4354 file-stream. (thanks to Robert J. Macomber)
4355 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4356 arguments to the internal stream functions. (thanks to David
4358 * bug fix: stack exhaustion is now handled on the x86/SunOS
4359 platform. (thanks to Daisuke Homma)
4360 * bug fix: more accurate ROOM results on GENCGC platforms
4361 * optimization: improved type inference for arithmetic-for
4362 index variables in LOOP
4363 * optimization: faster floating-point SQRT on x86-64
4364 * fixed some bugs revealed by Paul Dietz' test suite:
4365 ** DOCUMENTATION returns NIL instead of "" for method combinations
4366 that don't have a docstring
4368 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4369 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4370 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4371 therefore are not customizeable by user code (as seems to be at
4372 least permitted and maybe required by AMOP). As a consolation,
4373 however, the SBCL implementation of these functions now calls
4374 REINITIALIZE-INSTANCE as specified by AMOP.
4375 * bug fix: slot-definition documentation is propagated as per ANSI
4376 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4377 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4378 argument, as do eslotd initialization methods. (from Pascal
4379 Costanza's "Closer" project)
4380 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4381 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4383 * bug fix: it is now possible to have more than one subclass of
4384 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4385 (reported by Bruno Haible, Pascal Costanza and others)
4386 * bug fix: the dependent update protocol now works for generic
4387 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4388 and Pascal Costanza)
4389 * bug fix: condition-class instances corresponding to
4390 DEFINE-CONDITION forms are now created eagerly. (reported by
4391 Kalle Olavi Niemitalo on comp.lang.lisp)
4392 * bug fix: floating point printing is more accurate in some
4393 circumstances. (thanks to Simon Alexander)
4394 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4395 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4396 * bug fix: callbacks on OS X now preserve stack-alignment.
4397 (thanks to Cyrus Harmon)
4398 * enhancement: the x86-64 disassembler is much better at
4399 disassembling SSE instructions. (thanks to Lutz Euler)
4400 * enhancement: CHECK-TYPE on a variable now allows type-inference
4401 (thanks to Vincent Arkesteijn)
4402 * optimization: improved performance of EUC-JP external format.
4403 (thanks to NIIMI Satoshi)
4404 * optimization: performance improvements to IO on file streams of
4405 :ELEMENT-TYPE CHARACTER
4406 * optimization: much faster memory allocation on x86-64
4407 * optimization: faster garbage collections (latency and throughput)
4409 * optimization: faster bignum subtraction and division on x86 and x86-64
4410 (thanks to Lutz Euler)
4411 * optimization: more accurate type-inference for loops that use a
4412 floating point index variable or a negative step.
4414 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4415 * bug fix: add a workaround to SBCL looping infinitely at startup on
4416 Linux kernels with apparently buggy implementations of personality().
4417 (thanks to Svein Ove Aas)
4418 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4419 (thanks to David Lichteblau)
4420 * bug fix: local bindings shadow global symbol macros for
4421 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4422 * optimization: non-open coded uses of numeric comparison operators
4423 (e.g. >) no longer cons when called with more than one parameter
4424 on platforms supporting dynamic-extent allocation.
4425 * enhancement: saving cores with foreign code loaded is now supported
4426 on MIPS/Linux in addition to the previously supported platforms.
4427 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4428 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4429 * bug fix: division by zero in sb-sprof when no samples were collected
4430 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4431 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4432 (thanks to Alexander Kjeldaas)
4433 * new feature: ignoring the return values of destructive functions
4434 like NREVERSE signals a compile-time style-warning.
4435 (thanks to Kevin Reid)
4436 * new feature: the alignment of alien structure fields can be
4437 explicitly specified. (thanks to Cyrus Harmon)
4438 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4439 and dump core on SIGQUIT
4441 ** incompatible change: threads do not inherit values of specials
4442 from their parents (see manual)
4443 ** bug fix: threads stacks belonging to dead threads are freed by the
4444 next exiting thread, no need to gc to collect thread stacks anymore
4445 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4446 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4447 ** bug fix: dynamic variable and thread start related gc lossage
4448 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4450 * fixed some bugs revealed by Paul Dietz' test suite:
4451 ** SUBTYPEP is slightly more accurate on heinously complicated
4452 CONS types where some of the members have uncertain (in the
4453 NIL, NIL sense) type relationships to each other.
4455 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4456 no longer purified unless :PURIFY T is explicitly specified.
4457 ** Non-purified cores are significantly smaller than before
4459 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4460 * new feature: timers based on Zach Beane's excellent timer package
4461 * added support for the following external formats: koi8-u,
4462 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4463 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4464 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4465 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4466 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4467 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4468 * incompatible change: a threaded SBCL will no longer revert to
4469 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4470 * bug fix: interrupts are disabled until startup is complete; no
4471 more sigsegvs when receiving a signal to soon
4472 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4474 * bug fix: add a workaround for the memory randomization features in
4475 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4476 workaround will only be in effect on systems with the proc filesystem
4478 * bug fix: printing objects of type HASH-TABLE signals a
4479 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4481 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4482 have been running for over 50 days. (reported by Gilbert Baumann)
4483 * bug fix: the logic for getting names of functions gets less
4484 confused when confronded with alternate-metaclass
4485 funcallable-instances. (reported by Cyrus Harmon)
4486 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4487 consistent, even on internal alternate-metaclass objects.
4488 * bug fix: flush closure information collected by physical
4489 environment analysis prepass before the main pass. (bug reported
4491 * bug fix: compiler pack phase does not modify a hashtable, which is
4492 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4493 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4494 may be expanded. (reported by Alexander <malishev> on c.l.l)
4495 * bug fix: no more style-warnings when compiling code using LAST
4496 under high-SPEED low-SPACE settings. (reported by David Wallin
4498 * fixed some incompatibilities between SBCL's MOP and the MOP
4500 ** the METAOBJECT class is now implemented;
4501 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4502 STANDARD-OBJECT, as required;
4503 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4504 now compatible (as required by VALIDATE-SUPERCLASS); there
4505 remains a consistency requirement over the presence or absence
4506 of the FUNCTION class in the superclass list of finalized
4507 classes; see the manual for more details;
4508 ** the :AROUND method for COMPUTE-SLOTS on
4509 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4510 requested slot ordering.
4512 ** bug fix: parent thread now can be gc'ed even with a live
4514 ** bug fix: binding a special with PROGV to no value is not
4515 the same as that symbol not having been bound (thanks to
4517 ** bug fix: binding specials is thread safe (thanks to
4519 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4520 and SB-SPROF do not die with 'no handler for signal XX in
4521 interrupt_handle_now(..)' anymore
4522 ** bug fix: WITH-TIMEOUT works with multiple running threads
4523 * fixed some bugs revealed by Paul Dietz' test suite:
4524 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4525 the :method-class keyword argument.
4527 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4528 * new port: the Solaris operating system on x86 processors is now
4529 mostly supported, though some rough edges in the environment
4530 remain. (thanks to Daisuke Homma)
4531 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4532 space for its heap. (thanks to Thiemo Seufer)
4533 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4534 closures. (thanks to Thiemo Seufer)
4535 * minor incompatible change: eof selects abort in the debugger.
4536 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4537 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4539 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4540 deprecated, and will go away in a future revision of SBCL.
4541 * minor incompatible change: GC-ON and GC-OFF are no longer
4542 implemented with a counter, it does not matter how many times gc
4543 is switched on or off
4544 * bug fix: discriminating functions for generic function classes
4545 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4546 make invalid assumptions about method precedence order. (reported
4548 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4549 platforms. (thanks to Thiemo Seufer)
4550 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4551 * bug fix: correct pathname printing with printer escaping is on.
4552 (thanks to Kevin Reid)
4553 * bug fix: complex VOP definitions in "user-space" no longer trigger
4554 package locks. (reported by Zach Beane)
4555 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4556 for funcallable-instance functions, and is no different from
4558 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4559 characters in the current readtable. (reported by Nicholas Neuss)
4560 * bug fix: SUBTYPEP on various CONS types returns more a more
4561 accurate acknowledgment of its certainty.
4562 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4563 lists in some cases. This partially fixes bug 384.
4564 * flush all standard streams before prompting in the REPL and the
4566 * bug fix: signal handling and triggering gc do not conflict
4567 directly anymore, in particular a high frequency sb-sprof does
4568 not prevent gc from running
4569 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4570 approximation for timezone and DST information between the
4571 universal time epoch and the smallest negative 32-bit time_t.
4572 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4573 year 1899 so long as the encoded time is non-negative.
4574 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4575 the correct answer for non-constant rotate amounts when performing
4576 an inline 32-bit rotation.
4578 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4579 there is only one thread in the session
4580 ** bug fix: memory leak for streams created in one thread and
4581 written to in another
4582 ** bug fix: lockup when compiled with gcc4
4583 ** bug fix: race that allows the gc to be triggered when gc is
4585 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4586 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4588 ** bug fix: finished threads are gc'ed properly
4589 * fixed some bugs revealed by Paul Dietz' test suite:
4590 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4591 has arguments with a different set of applicable methods from
4592 the orignal arguments.
4593 ** The type error thrown by MAP now has a correct expected-type
4595 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4596 name a compiled function.
4597 ** Three MISC tests where a large bignum was improperly coerced to
4598 a float that couldn't represent that bignum during type
4599 derivation were fixed.
4600 ** SUBTYPEP can now handle types involving the negation of a
4601 list-form FUNCTION type.
4602 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4603 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4604 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4606 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4607 * New feature: Experimental support for bivalent streams: streams
4608 opened with :element-type :default now allow character and binary
4609 (unsigned-byte 8) I/O
4610 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4611 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4613 * bug fix: no more highly sporadic "couldn't check whether ~S is
4614 readable" when reading a stream and an interrupt hits in the middle
4615 of a select system call
4616 * compiler better recognizes complex arrays (reported by Eduardo
4618 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4619 for variables on SBCL built with linkage-tables. (reported by Luis
4621 * various error reporting improvements.
4622 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4623 (Thanks to Thiemo Seufer)
4624 * bug fix: nested reader invokations work correctly
4625 * bug fix: it is possible to have simultaneous references to foreign
4626 code and foreign data with the same name.
4628 ** added x86-64 support
4629 ** incompatible change: the threading api now works with thread
4630 objects instead of thread ids
4631 ** bug fix: threads are protected from signals and interruption when
4632 starting up or going down
4633 ** bug fix: a race where an exiting thread could lose its stack to gc
4634 ** bug fix: don't halt on infinite error in threads if possible
4635 ** fixed numerous gc deadlocks introduced in the pthread merge
4636 ** bug fix: fixed thread safety issues in read and print
4637 ** bug fix: debugger doesn't hang on session lock if interrupted at
4638 an inappropriate moment
4639 ** bug fix: run-program is now thread safe(r)
4640 ** bug fix: inner with-recursive-lock no longer releases the mutex
4641 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4642 * fixed some bugs revealed by Paul Dietz' test suite:
4643 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4644 EXPECTED-TYPE slots filled.
4645 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4647 ** MAKE-CONDITION accepts classes as type-designators.
4648 ** COMPILE may never return NIL.
4649 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4650 range before calling Unix time functions
4652 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4653 * numerous signal handling fixes to increase stability
4654 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4655 * minor incompatible change: we now correctly canonize default
4656 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4657 as per the MOP, rather than the historical (INITARG INITFUNCTION
4658 INITFORM). (reported by Bruno Haible)
4659 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4660 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4661 for more information.
4662 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4663 pathname is a directory pathname.
4664 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4665 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4667 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4668 :METACLASS argument in addition to a class name. (reported by
4669 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4670 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4671 (reported by Bruno Haible; patch from Gerd Moellmann)
4672 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4674 * bug fix: more cleanups to the floating point exception handling on
4675 x86-64 (thanks to James Knight)
4676 * bug fix: the compiler does not try to constant fold calls of
4677 COERCE and BIT-* functions when they return freshly constructed
4678 objects. (reported by Nikodemus Siivola and Paul Dietz)
4679 * optimization: improved the MIPS versions of generic (in the
4680 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4681 * optimization: direct conversion of (unsigned-byte 32) to floats on
4682 the PowerPC platform.
4683 * optimization: structure instances with raw slots now use less
4684 memory, and probably show better memory locality. (thanks to
4686 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4687 are treated as requests for stack allocation on the x86-64,
4688 Alpha-32, PPC and SPARC platforms.
4689 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4690 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4691 (thanks to Tony Martinez)
4693 ** gcing a dead thread can no longer lead to lockups
4694 ** threads block signals until they are set up properly
4695 ** errno is no longer shared by threads
4696 ** interrupt-thread restores the eflags register on x86
4697 ** fixed some lockups due to gc/thread interaction
4698 * fixed some bugs revealed by Paul Dietz' test suite:
4699 ** invalid dotted lists no longer raise a read error when
4700 *READ-SUPPRESS* is T
4701 ** signal an error if a symbol that names a declaration is used
4702 as the name of a type, or vice versa
4703 ** allow using the (declare (typespec var*)) abbreviation for
4704 (declare (type typespec var*)) with all type specifiers
4705 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4706 ** always return NIL from PPRINT-POP when OBJECT is NIL
4707 ** don't signal errors when pretty-printing malformed LABELS,
4708 FLET or MACROLET forms
4709 ** declarations in a DOLIST body are also in scope for the
4711 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4713 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4716 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4717 * fixed cross-compiler leakages that prevented building a 32-bit
4718 target with a 64-bit host compiler.
4719 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4720 opened with :IF-EXISTS :OVERWRITE.
4721 * fixed bug 281: error for an invalid qualifier in a short-form method
4722 combination method is not signalled until the faulty method is called.
4723 * bug fix: iteration variable type inferrer failed to deal with open
4724 intervals. (reported by Alan Shields)
4725 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4726 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4727 or more runtime options were provided to the sbcl binary.
4728 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4729 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4730 * optimization: there's now a fast-path for fixnum arguments in the
4731 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4732 * optimization: the code generated on x86-64 is more compact thanks
4733 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4734 * bug fix: floating-point exception handling now partly works on
4735 x86-64. (Thanks to James Knight)
4736 * improvement to the MIPS backend from Thiemo Seufer: C-style
4737 64-bit long long arguments and return values to alien functions
4739 * fixed some bugs revealed by Paul Dietz' test suite:
4740 ** the type-error signalled from WARN has a filled-in DATUM slot.
4741 ** the type-error required when a stream is not associated with
4742 a file has the stream as its datum.
4743 ** type-errors on single-floats on x86-64 no longer have
4744 :INVALID-OBJECT as the datum
4745 ** the type-errors signalled for invalid function names now have
4746 a correct expected type
4747 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4748 for structures defined with a :TYPE. Documentation strings for
4749 typed structures are no longer immediately discarded
4750 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4751 broadcast streams and synonym streams. FILE-LENGTH now also works
4752 on broadcast streams.
4754 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4755 * incompatible change: the --noprogrammer option, deprecated since
4756 version 0.7.5, has been removed. Please use the equivalent
4757 --disable-debugger option instead.
4758 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4760 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4761 inoperational for a while now) has been completely removed.
4762 * null lexical environments are now printed as #<NULL-LEXENV>,
4763 significantly reducing the amount of clutter in typical backtraces.
4764 * documentation on weak pointers, finalization, and after GC hooks
4765 has been added to the manual.
4766 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4767 as other specialized array types, is much faster. SUBSEQ and
4768 COPY-SEQ on such arrays have also been sped up.
4769 * optimization: EQL is now more efficient when at least other argument
4770 is known to be of type (OR FIXNUM (NOT NUMBER)).
4771 * fixed bug: the runtime is now less vulnerable to changes in the
4772 size of the SBCL object on OS X, and virtual memory is reserved for
4773 all spaces that need to be at a fixed address.
4774 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4775 * fixed bug: finalizers and after GC hooks that cause consing are now
4777 * fixed bug: compiler error messages and summaries are now printed to
4778 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4779 * fixed inference of the upper bound of an iteration variable.
4780 (reported by Rajat Datta).
4781 * fixed bug 211e: calling local functions with duplicated constant
4782 keyword argument no longer causes a bogus style warning about an
4784 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4785 ftype declaration to be disregarded. (reported by Dave Roberts)
4786 * fixed bug 373: caused by erronous compilation of references to alien
4787 variables in the runtime on ppc/darwin.
4788 * fixed bug 376: CONJUGATE type deriver.
4789 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4790 (reported by Baughn on #lisp)
4791 * a cross-compiler bug on non-x86 platforms has been identified and
4792 fixed. (thanks to Bruno Haible)
4793 * improvements to the MIPS runtime code for increased stability.
4794 (thanks to Thiemo Seufer)
4795 * increased the maximimum compact environment size to allow
4796 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4797 * partial workaround for bug 135: don't name the function we're
4798 calling for hairy cases of EVAL, so as not to accumulate one environment
4799 entry per call to EVAL. (reported by Kevin Reid)
4800 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4801 * optimization: type testing for non-vector arrays should be faster.
4802 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4804 * bug fix: setting 31st element of a bit vector to zero did not work
4806 * bug fix: redefining a class definition which failed due to a
4807 previous accessor / function clash now works (but see BUGS entry
4808 #380 for more problems in this area). (thanks to Zach Beane)
4809 * the long form of DEFINE-METHOD-COMBINATION disables method group
4810 checking when given a single method group with pattern *. (thanks
4812 * on x86 compiler supports stack allocation of results of simple
4813 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4814 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4815 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4816 * fixed some bugs related to Unicode integration:
4817 ** the restarts for recovering from input and output encoding
4818 errors only appear when there is in fact such an error to
4820 * fixed some bugs revealed by Paul Dietz' test suite:
4821 ** MISC.549 and similar: late transformation of unsafe type
4822 assertions into derived types caused unexpected code
4824 ** SCALE-FLOAT type deriver is less wrong.
4825 ** type derivers for EXP, LOG and similar functions compute result
4826 types for complex arguments better.
4827 ** (MISC.563) CONJUGATE type deriver works for very restricted
4829 ** out-of-line type testers for character strings are available.
4830 ** EQUAL compiler transform understands specialness of objects
4832 ** accessing double-floats stored on the stack now works on x86-64.
4833 ** debugger internals could sometimes create invalid lispobjs,
4834 resulting in GC crashes.
4835 ** MISC.548: type check weakening can convert required type into
4837 ** initialization forms for bindings are not in scope of free special
4840 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4841 * incompatible change: thread support for non-NPTL systems has
4842 been removed - locking is buggy and unreliable. A threaded
4843 SBCL build will now warn at startup and refuse to create
4844 new threads, unless futex support is detected in the kernel
4845 * incompatible change: the top level REPL now has only an ABORT
4846 restart associated with it, not TOPLEVEL and ABORT as it used to.
4847 TOP and TOPLEVEL are now available as debugger commands for
4848 returning to the top level.
4849 * incompatible change: forms evaluated in the REPL now use the
4850 global optimization policy.
4851 * incompatible change: user- and system-initialization files are
4852 no longer processed with LOAD, but by READ and EVAL; hence the
4853 global optimization policy, startup package, readtable, etc,
4855 * The .fasl file format number has been incremented because of
4856 various incompatible changes.
4857 * internal entry point details and argument counts no longer appear
4858 in backtraces unless explicitly requested by setting
4859 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4860 * built-in and standard functions no longer have names like "top
4861 level local call to FOO".
4862 * fixed bug 32: functions defined in non-null lexical environments
4863 now have more legible printed representation
4864 * fixed bug 33: functions defined in non-null lexical environemnts
4865 are now more amenable to inspection by INSPECT.
4866 * workaround for bug 354: XEPs no longer appear in backtraces unless
4867 explicitly requested.
4868 * fixed bug: receiving the signal which results from attempting to
4869 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4870 SIGBUS on other *BSDs) on architectures where the C stack is also
4871 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4872 to debugger confusion or wild instability. (reported by Cheuksan
4874 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4875 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4876 (reported by Lutz Euler)
4877 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4878 compiled code. (reported by Paul Dietz)
4879 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4880 specialized parameter to a method to something that is not TYPEP
4881 the specializer is now possible.
4882 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4883 face of package deletion.
4884 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4885 pathname. (reported by David Tolpin on c.l.l)
4886 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4887 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4888 STRING-STREAM and FILE-STREAM, respectively.
4889 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4890 than previously; in addition, its test suite is now run on build.
4891 (thanks to Luke Gorrie)
4892 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4893 * optimization: added a immediate representation for single-floats
4895 * fixed some bugs revealed by Paul Dietz' test suite:
4896 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4897 ** attempting to create a package with a colliding nickname causes
4898 correctable errors to be signalled.
4899 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4900 ** several x86-64 backend bugs related to sign-extension of immediate
4903 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4904 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4905 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4907 * fixed loading of multiply forward-referenced layouts.
4908 (thanks to Cheuksan Wang)
4909 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4910 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4911 (see COMPILE-FILE documentation for details of :PRINT option)
4912 * fixed bugs 19 and 317: fixed-format floating point printing is
4913 more accurate. This also fixes a bug reported by Adam Warner
4914 related to the ~@F format directive.
4915 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4917 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4918 dispatch table if the from-char is a dispatch macro character.
4919 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4920 by the wordsize no longer ignore the last word. (reported by Lutz
4922 * fixed bug in type checking of dynamic-extent variables. (reported
4924 * optimization: sequence traversal functions use their freedom to
4925 coerce function designators to functions.
4926 * optimization: code with many calls to CLOS methods specialized on
4927 CLOS classes has had redundant type checks removed.
4928 * optimization: added declarations to speed up operations that access
4929 the internal character database (for example STRING-UPCASE)
4930 * optimization: comparison operations between floats and sufficiently small
4931 fixnums no longer create extra rationals
4932 * fixed some bugs related to Unicode integration:
4933 ** portions of multibyte characters at the end of buffers for
4934 character-based file input are correctly transferred to the
4935 start of the buffer at the next read.
4936 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4937 passing it through to OPEN.
4938 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4939 argument given to internal calls to OPEN.
4940 ** the built-in comment readers (introduced by character sequences
4941 ";" and "#|") are more forgiving to encoding errors; they will
4942 STYLE-WARN and then attempt to resync the stream at a character
4943 boundary. (thanks to Teemu Kalvas)
4944 * fixed some bugs in the x86-64 port:
4945 ** Negative short int return values from c-calls are sign-extended
4947 ** The stack is aligned to 16-bytes for c-calls, as required by
4948 the ABI. (thanks to Cheuksan Wang)
4949 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4950 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4951 for enums. (thanks to Vincent Arkesteijn)
4952 ** Multiple small optimizations and bugfixes for floating point
4954 * fixed some bugs revealed by Paul Dietz' test suite:
4955 ** Space, Tab, Linefeed, Return and Page have the invalid
4956 secondary constituent character trait.
4957 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4959 ** WITH-INPUT-FROM-STRING should only update the index place on
4961 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4962 works more reliably.
4963 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4964 with one-dimensional arrays with fill pointers.
4965 ** TYPE-OF failed on a complex with an integer realpart and a
4967 ** compiler failure during type inference for the code of form
4968 (IF (EQL X (THE ...)) ...) (MISC.535).
4970 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4971 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4972 platform. The port supports 61-bit fixnums, large memory spaces
4973 and reloading shared object files.
4974 * enhancement: saving cores with foreign code loaded is now
4975 supported on ppc/Darwin in addition to the previously supported
4977 * enhancement: the statistical profiler now walks deeper into the
4978 call stack for more meaningful call-graphs and accrued time
4979 reports (x86/x86-64 only). It also now reports time spent in
4981 * enhancement: it is now possible to trace most individual methods
4982 of a generic function in addition to tracing the generic function
4984 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4986 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4987 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4988 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4989 produces an error. (thanks to Vincent Arkesteijn)
4990 * bug fix: NAMESTRING on pathnames with :WILD components in their
4991 directories works correctly. (thanks to Artem V. Andreev)
4992 * fixed bug 125: compiler preserves identity of closures. (reported
4994 * bug fixed: functions with &REST arguments sometimes failed with
4995 "Undefined function" when compiled with (DEBUG 3). (reported by
4997 * bug fix: overflow during compiling of setting element of a bit
4998 vector with constant index and value. (reported by Timmy Douglas)
4999 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5000 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5001 * on x86 compiler partially supports stack allocation of dynamic-extent
5003 * GO and RETURN-FROM do not check the extent of their exit points
5004 when compiled with SAFETY 0.
5005 * fixed some bugs related to Unicode integration:
5006 ** encoding and decoding errors are now much more robustly
5007 handled; it should now be possible to recover even from invalid
5008 input or output to the terminal. (thanks to Teemu Kalvas)
5009 ** provided a first cut at implementing STRING-TO-OCTETS and
5010 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5011 ** altered the SB-MD5 contributed module slightly, changing the
5012 interface just enough for it to be supportable for builds where
5013 lisp characters are not eight bits.
5014 * fixed some bugs revealed by Paul Dietz' test suite:
5015 ** the FORMATTER-generated functions for ~V[ conditionals require
5016 the correct number of arguments.
5017 ** READ-FROM-STRING returns the mandated second value when applied
5018 to displaced strings.
5019 ** the #\Rubout and #\Backspace characters are treated as invalid
5020 constituent characters by the tokenizer.
5022 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5023 * new feature: reloading changed shared object files with
5024 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5025 * new feature: references to foreign variables and functions
5026 can now be compiled and loaded before the corresponding shared
5027 object file is loaded, as long as the foreign definitions are
5028 available at runtime.
5029 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5030 supported. (thanks to Dan Debertin)
5031 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5032 just keywords. (thanks to Vincent Arkesteijn)
5033 * fixed bug #331: structure-class instances corresponding to
5034 DEFSTRUCT forms are now created eagerly.
5035 * fixed bug #345: backtraces from calls to undefined functions work
5036 on x86 as well. Related bug #61 is now also partially fixed on x86
5037 (backtraces from throws to unknown catch tags.)
5038 * bug fix: lambda-list parsing is now stricter vrt. order and number
5039 of lambda-list keywords.
5040 * bug fix: as specified by AMOP, an error is signalled if a
5041 class-option appears multiple times in a DEFCLASS form. (reported
5043 * bug fix: RANDOM can be compiled when the compiler derives the type
5044 of its numeric argument as a disjoint set of small integers.
5045 (reported by Paul Dietz)
5046 * bug fix: starting a core saved with shared objects loaded when
5047 those objects are not available no longer causes threaded SBCL to
5048 hang. (reported by Sean Ross)
5049 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5051 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5052 argument, which must always be NIL. (reported by Kalle Niemitalo)
5053 * bug fix: printing 1.0d+23 no longer results in an error.
5054 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5055 * bug fix: structure slot setters preserve evaluation order. (thanks
5057 * fixed some bugs related to Unicode integration:
5058 ** RUN-PROGRAM can allow its child to take input from a Lisp
5059 stream. (reported by Stefan Scholl)
5060 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5061 locales. (reported by Ken Causey)
5062 * fixed some bugs revealed by Paul Dietz' test suite:
5063 ** INCF, DECF and REMF evaluate their place form as specified in
5065 ** FORMATTER expands ~{ ~} iteration directives with V or #
5066 parameters correctly.
5067 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5068 consequent uses no arguments correctly.
5069 ** the system has a partial understanding of the (COMPLEX RATIO)
5071 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5074 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5075 * new feature: a build-time option (controlled by the :SB-UNICODE
5076 keyword feature, enabled by default) for building the system with
5077 support for the entire 21-bit character space defined by the
5079 * new feature: the system now has rudimentary external-format
5080 support; the primary user-visible change at this time is that
5081 characters with the high bit set (such as lower-case-e-acute) will
5082 print correctly to a terminal in a UTF-8 environment.
5083 * minor incompatible change: BASE-CHAR no longer names a class;
5084 however, CHARACTER continues to do so, as required by ANSI.
5085 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5086 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5087 has been moved to the SB-EXT package (temporarily re-exported from
5089 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5090 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5092 * fixed bug #351: better error-handlind and reporting for malformed
5094 * fixed bug #350: bignum-printing is now more memory-efficient,
5095 allowing printing of very large bignums, eg. (expt 2 10000000).
5096 (reported by Bruno Haible)
5097 * fixed bug #302: better primitive-type selection for intersection
5099 * fixed bug #308: non-graphic characters now all have names, as
5100 required. (reported by Bruno Haible)
5101 * bug fix: redefining a class with different superclasses now correctly
5102 removes it from the direct-subclasses of its previous superclasses.
5103 (reported by David Morse)
5104 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5105 new value now works. (reported by Bruno Haible)
5106 * bug fix: correct canonicalization of multiple non-standard slot
5107 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5108 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5109 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5110 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5111 now exists, an signals an error.
5112 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5113 during macroexpansion for non-iteration variables as well. (reported
5114 by Bruno Haible for CMUCL)
5115 * bug fix: Cyclic structures and unprintable objects in compiler
5116 messages no longer cause errors. (reported by Bruno Haible)
5117 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5118 and READ-FROM-STRING all now return a primary value of NIL if
5119 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5120 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5121 (reported by Bruno Haible for CMUCL)
5122 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5123 do not designate a condition. (reported by Bruno Haible for
5125 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5126 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5127 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5128 permitting resolution in favour of any of the conflicting symbols.
5129 (reported by Bruno Haible for CMUCL)
5130 * bug fix: EQUAL compiler optimizations is less aggressive on
5131 strings which can potentially compare true despite having distinct
5132 specialized array element types.
5133 * bug fix: unit enumerations can be defined without dividing by
5134 zero. (thanks to Vincent Arkesteijn)
5135 * FORMAT compile-time argument count checking has been enhanced.
5136 (report from Bruno Haible for CMUCL)
5137 * a partial workaround for the bug 262: the compiler does not try to
5138 inline-expand a local function doing RETURN-FROM from a deleted
5139 BLOCK. (thanks to Peter Denno for the bug report and to David
5140 Wragg for the simple test case)
5141 * fixed some bugs revealed by Paul Dietz' test suite:
5142 ** RENAME-PACKAGE allows all package designators as new package
5144 ** constraint propagation and lambda variable substitution are
5145 more cautious in dealing with partially deleted code.
5146 ** compiler sometimes lost reoptimization passes.
5147 ** CERROR, given a condition as condition designator, passes its
5148 remaining arguments to the continue format control without
5150 ** Case-altering FORMAT directives work correctly on non-ASCII
5152 ** The REAL type specifier handles bounds outside the floating
5153 point ranges without signalling FLOATING-POINT-OVERFLOW.
5154 ** Functions with IR1-transformations can create intercomponent
5155 references to global functions.
5156 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5158 ** FORMAT ~R treats a nil value for its first parameter correctly.
5160 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5161 * enhancement: saving cores with foreign code loaded is now
5162 supported on x86/NetBSD and sparc/Linux in addition to the previously
5163 supported platforms.
5164 * bug fix: on some platforms repeated installations caused multiple
5165 copies of HTML documentation to be installed -- should not happen
5166 any more. (reported by Stefan Scholl)
5167 * bug fix: parsing self-recursive alien record types multiple times
5168 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5169 original patch by Helmut Eller for CMUCL)
5170 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5171 (thanks to Richard Kreuter)
5172 * bug fix: defining classes whose accessors are methods on existing
5173 generic functions in other (locked) packages no longer signals
5174 bogus package lock violations. (reported by François-René Rideau)
5175 * bug fix: special variables as DEFMETHOD parameters no longer have
5176 associated bogus type declarations. (reported by David Wragg and
5178 * bug fix: read-write consistency on streams of element-type
5179 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5180 * bug fix: redefiniton of the only method of a generic function with
5181 no DEFGENERIC no longer emits a full WARNING. In addition,
5182 redefinition of generic functions with no DEFGENERIC to an
5183 incompatible lambda list now signals an error. (thanks to Zach
5185 * bug fix: DEFGENERIC now works even when there's a function of the
5186 same name in an enclosing lexical environment. (thanks to Zach
5188 * fixed compiler failure, caused by instrumenting code during
5189 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5190 * optimization: added loop analysis and improved register allocation
5191 * fixed some bugs revealed by Paul Dietz' test suite:
5192 ** POSITION on displaced vectors with non-zero displacement
5193 returns the right answer.
5194 ** (SIMPLE-STRING) is a valid type specifier for sequence
5196 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5198 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5199 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5201 ** The justification version of the FORMAT ~< directive treats
5202 non-zero minpad parameter correctly.
5204 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5205 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5206 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5207 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5208 the supported interface.
5209 * new feature: Single-stepping of code compiled with DEBUG 2 or
5210 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5211 * new feature: saving cores with foreign code loaded is now
5212 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5213 Timothy Moore's work for CMUCL)
5214 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5215 parameters to * instead of NIL if no initform is supplied.
5216 (reported by Johan Bockgaard)
5217 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5218 correctly when FUNCALL appears as the car of the form. Note:
5219 despite this FUNCALL forms are not currently subject to
5220 compiler-macro expansion. (port of Raymond Toy's fix for the
5221 same from CMUCL, reported by Johan Bockgaard)
5222 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5223 (thanks for Teemu Kalvas)
5224 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5225 case instead of terminating the iteration (thanks for Julian
5226 Squires, Sean Champ and Raymond Toy)
5227 * bug fix: incorrect expansion of defgeneric that caused a style
5228 warning. (thanks for Zach Beane)
5229 * bug fix: slot accessor effective method computation works properly
5230 for classes with multiple non-standard applicable methods on
5231 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5232 * on x86 compiler supports stack allocation of results of LIST and
5233 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5234 CMUCL implementation by Gerd Moellmann)
5235 * fixed some bugs revealed by Paul Dietz' test suite:
5236 ** FORMAT strings with both the ~<~:;~> form of the justification
5237 directive and pretty-printing directives cause an error.
5239 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5240 * incompatible change: the internal functions
5241 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5242 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5243 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5244 instead of the old functions.
5245 * new feature: on platforms where "dladdr" is available foreign
5246 function names now appear in backtraces. (based on Helmut Eller's
5248 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5249 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5251 * documentation: ASDF manual is now distributed with SBCL.
5252 * bug fix: SBCL can now load its contributed modules with REQUIRE
5253 even if the system-provided entries have been removed from
5254 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5256 * bug fix: backtraces involving undefined functions or assembly
5257 routines are more informative. (thanks to Brian Downing)
5258 * bug fix: mutually referent alien structures now work correctly.
5259 (reported by Rick Taube)
5260 * bug fix: structures defined by WITH-ALIEN can be referred to
5261 within other definitions in the same WITH-ALIEN.
5262 * bug fix: division operators (MOD, TRUNCATE and the like) with
5263 constant zero divisors and integer dividends no longer generate
5265 * bug fix: provide default methods for INPUT-STREAM-P and
5266 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5267 * bug fix: improve the detection and resolution of MOP metacycles
5268 (where effective method computation depends on the generic function
5269 having its effective method computed). (reported by Bruno Haible)
5270 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5271 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5272 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5273 * bug fix: pathnames with relative directory components can be
5274 represented relative to default pathnames.
5275 * optimization: in taking the GCD of bignums, reduce the two bignums
5276 to approximately the same size (using Euclid's algorithm) before
5277 applying the more sophisticated binary GCD. (thanks to Juho
5279 * optimization: COUNT on bitvectors now operates word-at-a-time.
5280 * optimization: ASH with a positive, but not necessarily constant,
5281 (leftwards) shift, when in a modular context, is compiled to a
5283 * fixed some bugs revealed by Paul Dietz' test suite:
5284 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5285 if the corresponding argument is NIL.
5286 ** FORMAT directives accepting a minpad parameter treat negative
5288 ** literal commas as character parameters to FORMAT directives are
5290 ** literal spaces directly after ~<Newline> directives within a
5291 format-logical-block (~:< ~@:>) do not induce :FILL-style
5292 conditional newlines.
5293 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5294 as specified: it no longer includes conditional newlines).
5295 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5297 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5298 :PER-LINE-PREFIX argument does not evaluate to a string.
5300 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5301 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5302 the manual for details; for now, package locks can be disabled by
5303 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5304 if no major problems are found then it is likely that they will be
5305 compiled in unconditionally.
5306 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5307 unsupported operators on all platforms. To load a shared library
5308 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5309 object file, link it into a shared library outside of SBCL and
5310 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5312 * bug workaround: ROOM T and the GC were not working together
5313 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5314 reporting facility aren't preserved. That reporting has been
5315 disabled, so now until and unless someone figures out how to make it
5316 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5317 * minor incompatible change: as threatened around sbcl-0.8.0, the
5318 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5319 The symbols are also exported from SB-PCL for backwards
5320 compatibility, but more so than before SB-PCL should be treated as
5321 an implementation-internal package.
5322 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5324 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5325 It is known as of this release not to work on the Alpha, however.
5326 * fixed bug #167: errors signalled due to illegal syntax in method
5327 bodies are now more legible.
5328 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5329 designators and can hence be used with TYPEP.
5330 * fixed bug #333: CHECK-TYPE now ensures that the type error
5331 signalled, if any, has the right object to be accessed by
5332 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5333 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5334 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5336 * fixed bug #334: programmatic addition of slots using specialized
5337 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5338 and :ALLOCATION :CLASS slots.
5339 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5340 float exponents. (rereported by Peter Seibel)
5341 * fixed a bug: #\Space (and other whitespace characters) are no
5342 longer considered to be macro characters in standard syntax by
5343 GET-MACRO-CHARACTER.
5344 * fixed bug: initialization of condition class metaobjects no longer
5345 causes an instance of the condition to be created. (reported by
5347 * fixed bug: it is now possible to have slots such that
5348 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5349 description is neither :INSTANCE nor :CLASS.
5350 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5351 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5352 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5353 non-standard SLOT-DEFINITION-ALLOCATION values.
5354 * fixed bugs: various race conditions handling exiting threads.
5355 CL-PPCRE's thread torture test now passes.
5356 * fixed arguably-a-bug: GC time proportional to number of threads in
5357 system even when most of them are idle
5358 * optimization: improved performance of BIT and SBIT on bit-vectors.
5359 * .fasl file incompatibility: The fasl file version number has
5360 been incremented because of changes associated with package locks.
5362 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5363 * minor incompatible change: the system no longer provides
5364 optimization hints (conditions which are TYPEP
5365 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5366 mode; these hints are still emitted when higher SPEED optimization
5368 * new contrib module: a sampling profiler (profiling by statistical
5369 sampling, rather than by instrumenting functions) is available as
5370 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5371 * the behaviour of the standard function ED is now customizeable by
5372 third parties through a hook variable: see ED's documentation
5373 string for information on the protocol.
5374 * the compiler no longer emits efficiency notes for (FUNCALL X)
5375 when the type of X is uncertain under default optimization
5377 * fixed bug 276: mutating a binding of a specialized parameter to a
5378 method to something that is not TYPEP the specializer is now
5380 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5381 exhibit the required behaviour on the x86 platform. (thanks to
5382 Peter van Eynde, Eric Marsden and Bruno Haible)
5383 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5384 even for difficult arguments. (reported by Peter Graves)
5385 * fixed bug 141a: the backquote printer now descends quoted
5387 * fixed another bug in backquote printing: no more destructive
5388 modification of the form's list structure. (reported by Brian
5390 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5391 move between its address being taken and the call to
5392 interrupt_thread, fixing a crashing race condition.
5393 * the SB-POSIX contrib implementation has been adjusted so that it
5394 no longer exhibits ridiculously poor performance when constructing
5395 instances corresponding to C structs.
5397 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5398 * minor incompatible change: the sb-grovel contrib now treats C
5399 structures as alien (in the sense of SB-ALIEN) objects rather than
5400 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5401 has implications for memory management of client code
5402 (sb-grovel-returned objects must now be manually managed) and for
5403 type safety (alien objects now have full types).
5404 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5405 used to control emission of compiler diagnostics, rather than the
5406 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5407 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5408 quality should be considered deprecated.
5409 * install.sh now installs the user manual as well
5410 * (not quite a new documentable feature, but worth considering in
5411 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5412 beginnings of a semantically meaningful condition hierarchy is
5413 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5415 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5416 designator as the defaults argument.
5417 * fixed bug: Displaced arrays whose displaced-to array has become
5418 too small now cause ARRAY-DIMENSION to signal an error, providing
5419 for safer bounds-checking. (reported by Bruno Haible)
5420 * fixed bug: DEFCLASS slot definitions with identical :READER and
5421 :WRITER names now signal a reasonable error. (reported by Thomas
5423 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5425 * fixed bug: Invalid slot specification errors now print correctly.
5426 (thanks to Zach Beane)
5427 * fixed bug 320: Shared to local slot value transfers in class
5428 redefinitions now happen corrently from superclasses as
5429 well. (reported by Bruno Haible)
5430 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5432 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5433 improper lists correctly. (reported by Bruno Haible)
5434 * fixed bug 313: source-transform for <fun-name> was erroneously
5435 applied to a call of a value of a variable with name <fun-name>.
5436 (reported by Antonio Menezes Leitao)
5437 * fixed bug 307: The obsolete instance protocol ensures that
5438 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5439 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5440 remove dead unknown-values globs from the middle of the stack.
5441 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5442 easier to resume long computations after using *BREAK-ON-SIGNALS*
5443 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5444 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5445 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5446 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5447 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5448 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5450 * fixed a (fairly theoretical) bug in string printing: if
5451 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5452 does not have array-element-type equal to the most general string
5454 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5455 function name. (thanks to Nikodemus Siivola)
5456 * fixed bug: compile-time format string checker failed on
5457 non-closed ~{. (reported by Thomas F Burdick)
5458 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5459 don't warn on legal loop code involving more than one aggregate
5460 boolean. (thanks to Nikodemus Siivola)
5461 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5462 in keyword position to MAKE-PACKAGE was not being reported as
5464 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5465 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5467 * fixed bugs 280 and 312: the checking for multiple definitions in a
5468 file is less likely to become confused by uses of inline
5470 * fixed bug: the #S reader macro performs the keyword coercion
5471 specified for slot names. (reported by Kalle Niemitalo)
5472 * fixed bug: lambda lists may contain symbols whose names start with
5473 & but are not lambda-list-keywords; their occurrence triggers a
5475 * fixed bug 321: define-method-combination argument lambda lists do
5476 not cause invalid code to be generated when &optional or &aux
5477 variables have default values. (reported by Bruno Haible)
5478 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5479 have CLOS classes; this appears also to have fixed reported
5480 instability in stack exhaustion detection.
5481 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5482 MUFFLE-WARNING when no associated restart is present is now
5484 * optimization: rearranged the expansion of various defining macros
5485 so that each expands into only one top-level form in a
5486 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5488 * optimization: used a previously little-used slot in symbols to
5489 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5491 * fixed some bugs revealed by Paul Dietz' test suite:
5492 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5494 ** Fixed an optimization bug related to inheritance of initforms
5495 from local to shared slots.
5496 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5497 ** CAST optimizer forgot to flush argument derived type.
5498 ** print/read consistency on floats is now orders of magnitude
5499 more likely. (thanks also to Bruno Haible for a similar report
5501 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5502 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5503 for objects of type REAL. Make it so.
5504 ** SXHASH is specified (infelicitously) to respect similarity,
5505 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5506 it so. (thanks to Markus Ziegler)
5507 ** on the Alpha, the compiler succeeds in compiling functions
5508 returning a known number of arguments greater than 63.
5509 ** fixed handling of invalid NIL arguments in keyword position
5511 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5513 ** provided a readably-printable representation for RANDOM-STATE
5515 ** ensured that pathnames, where they have a namestring, always
5516 print using #P"..." syntax.
5518 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5519 * Support for the forthcoming 2.0 version of the NetBSD kernel
5520 running on x86 hardware has been added. (thanks to Perry
5521 E. Metzger most immediately, and others for their past work)
5522 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5523 current release version; SBCL's OpenBSD support had been broken
5524 since about the time of OpenBSD's switch to ELF binary format.)
5525 * [placeholder for DX summary]
5526 ** user code with &REST lists declared dynamic-extent, under high
5527 speed or space and low safety and debug optimization policy.
5528 * The manual has been converted to Texinfo format and the debugger
5529 chapter from the cmucl manual has been added.
5530 * A facility has been added to extract documentation strings from
5531 sbcl and store them as Texinfo-formatted snippets for inclusion in
5532 the manual (via Texinfo's @include directive)
5533 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5534 the test case to Dave Roberts)
5535 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5536 pointers. (reported by Sean Ross)
5537 * bug fix: PROFILE output is printed nicely even for large numerical
5538 values. (thanks to Zach Beane)
5539 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5540 greater than 32 handle EOF correctly.
5541 * bug fix: on X86 an immediate argument of the IMUL instruction is
5542 correctly printed in disassembly. (thanks to Lutz Euler)
5543 * bug fix: class slots in redefined classes preserve their old
5544 values. (thanks to Bruno Haible and Nikodemus Siivola)
5545 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5546 succeeds. (reported by Marco Baringer)
5547 * fixed some bugs revealed by Paul Dietz' test suite:
5548 ** READ-SEQUENCE now works on ECHO-STREAMs.
5549 ** RATIONALIZE works more according to its specification. (thanks
5552 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5553 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5554 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5555 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5556 should matter to you only if you rebind the printer control
5557 variables and then find you want different bindings in the
5558 debugger than in the ordinary execution of your program.)
5559 * The runtime build system has been tweaked to support building
5560 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5561 assembler and linker. (thanks to Nikodemus Siivola)
5562 * Unbound, undefined, undeclared variables now trigger full
5563 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5564 more often programmer error than deliberate exploitation of undefined
5566 * optimization: the hash algorithm for strings has changed to one
5567 that is less vulnerable to spurious collisions. (thanks to Juho
5569 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5570 needless bounds checking. (thanks to Juho Snellman)
5571 * optimization: implemented multiplication as a modular
5572 (UNSIGNED-BYTE 32) operation on the PPC backend.
5573 * fixed some bugs revealed by Paul Dietz' test suite:
5574 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5576 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5577 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5578 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5580 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5582 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5584 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5585 their output stream on EOF from read.
5586 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5587 have been read to end-of-file.
5588 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5590 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5591 description of determination of which consecutive characters
5593 ** Printing the "Space" character with escaping on now yields "#\\ ",
5594 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5595 ** Reading floating-point numbers with *READ-BASE* set to a number
5596 less than 10 works correctly.
5597 ** Reading floating-point numbers with *READ-BASE* set to a number
5598 more than 10 works correctly.
5599 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5600 the readtable currently in effect.
5602 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5603 * minor incompatible change: parsing of namestrings on a physical
5604 (Unix) host has changed; numbers after the final #\. in a
5605 namestring are no longer interpreted as a version field. This is
5606 intented to be largely invisible to the user, except that the
5607 meaning of the namestring "*.*.*" has changed: it now refers to a
5608 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5609 should usually be replaced by
5610 (make-pathname :name :wild :type :wild :version :wild)
5611 with the added benefit that this is more likely to be portable.
5612 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5613 option to OPEN now signals an error if the file being opened
5614 exists; this may have an impact on existing code.
5615 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5616 signals received, on the PowerPC platforms (both Linux and
5617 Darwin). (thanks to Pierre Mai for pointing out the location of
5619 * several fixes on OS X: The system now builds and runs cleanly on
5620 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5621 (thanks to Brian Mastenbrook)
5622 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5623 second-resolution: integer multiples of 1/3600 between -24 and 24.
5624 (thanks to Vincent Arkesteijn)
5625 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5626 type when called with 1 argument; PEEK-CHAR checked type of
5627 PEEK-TYPE only after having read first character from a
5628 stream. (reported by Peter Graves)
5629 * bug fix: the garbage collector now has much better locality
5630 behaviour, and in particular no longer treats all memory as being
5631 exhausted when many small objects point to each other in a deeply
5633 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5634 recognized as being TYPEP their class.
5635 * bug fix: the PUSHNEW documentation string has been corrected.
5636 (thanks to Vincent Arkesteijn)
5637 * bug fix: defaulting of the value for the last of an atypically
5638 large number of multiple values being bound was not being
5639 performed correctly on the Alpha or PPC platforms
5640 * optimization: implemented multiplication as a modular
5641 (UNSIGNED-BYTE 32) operation on the x86 backend.
5642 * optimization: SEARCH on simple-base-strings can now be open-coded.
5643 (see also contrib/compiler-extras.lisp for inspiration for
5644 teaching the compiler about the Boyer-Moore algorithm).
5645 * value, returned by MAX (and MIN) called with several EQUALP, but
5646 not EQL, arguments now does not depend on compiler settings.
5647 * fixed some bugs revealed by Paul Dietz' test suite:
5648 ** in stack analysis liveness information is propagated from
5649 non-local entry points.
5650 ** pathwise CAST removing failed when the CAST node did not start
5652 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5653 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5655 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5656 host is already defined.
5657 ** RENAME-FILE works on streams instead of signalling an internal
5659 ** PEEK-CHAR uses the current readtable when determining whether
5660 or not a character is whitespace.
5661 ** MERGE-PATHNAMES handles the case when the pathname does not
5662 specify a name while the default-pathname specifies a version.
5663 ** Pathnames now stand a better chance of respecting print/read
5665 ** Attempting to use standardized file system operators with a
5666 pathname with invalid :DIRECTORY components signals a
5668 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5670 ** DIRECTORY on logical pathnames is more correct.
5671 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5672 signal a TYPE-ERROR if their argument is not a stream.
5673 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5674 designator argument does not designate a stream.
5675 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5676 examining the synonym.
5677 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5679 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5680 element-type larger than ([UN]SIGNED-BYTE 32).
5682 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5683 * When built with the :SB-FUTEX feature, threaded builds now take
5684 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5685 for faster/more reliable mutex and condition variable support.
5686 * Incompatible change (but one you probably shouldn't have been using
5687 anyway): the interface and code for arbitrating between multiple
5688 threads in the same user session has been redesigned.
5689 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5690 error when called without an explicit environment argument.
5691 (thanks to Nikodemus Siivola)
5692 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5693 confused about their position. (thanks to Adam Warner and Gerd
5695 * bug fix: Pretty printing backquoted forms with unquotations in the
5696 argument list position of various code constructs such as LAMBDA
5697 now works correctly. (reported by Paul Dietz)
5698 * bug fix: Pretty printing unquotations no longer loses all
5699 stream position information.
5700 * optimization: performance of string output streams is now less
5701 poor for multiple small sequence writes.
5702 * optimization: performance of CSUBTYPEP in the presence of complex
5703 expressions involving CONS and NOT many times has been improved.
5704 (reported by Paul Dietz)
5705 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5707 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5708 streams for the REPL, for the debugger, and so on. (thanks to
5710 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5711 * fixed some bugs revealed by Paul Dietz' test suite:
5712 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5713 is ignored if it is too small, rather than propagating through
5714 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5715 ** extremely complex negations of CONS types were not being
5716 sufficiently canonicalized, leading to inconsistencies in
5718 ** VALUES tranformer lost derived type.
5720 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5721 * fixed a bootstrapping bug: the build process no longer assumes
5722 that the various BOOLE-related constants have the same value in
5723 host and target lisps. (noted by Paul Dietz' test suite on an
5724 SBCL binary built from CLISP)
5725 * The system can now be dynamically linked on the MIPS platform,
5726 which enables dynamic loading of foreign code from Lisp. (thanks
5727 to Ralf Baechle for discussions on the MIPS ABI)
5728 * The system now records debugging information for its own source
5729 files in a filesystem-position-independent manner, relative to
5730 the "SYS" logical host.
5731 * fixed a compiler bug: MV-LET convertion did not check references
5732 to the "max args" entry point. (reported by Brian Downing)
5733 * tweaked disassembly notes to be less confident about proclaiming
5734 some instruction as an LRA. (thanks to Brian Downing)
5735 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5736 now each have their own history, command character, and other
5737 characteristics. (thanks to David Lichteblau)
5738 * fixed some bugs revealed by Paul Dietz' test suite:
5739 ** compiler failure in compiling LOGAND expressions including a
5741 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5742 shift greater than 32.
5743 ** FLUSH-DEST did not mark blocks for type check regeneration.
5744 ** HANDLER-CASE failed to accept declarations in handler clauses
5745 in some circumstances.
5747 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5748 * New code in contrib/sb-introspect (still probably not entirely
5749 stable yet) provides some support for smart Lisp development
5750 environments like SLIME.
5751 * The conditions signalled for errors occurring when loading .fasl
5752 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5753 in a way which should help ASDF recover gracefully.
5754 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5755 stuff has been cleaned up. If you code contrib/ stuff, this might
5756 affect you, and you can look at contrib/README, contrib/STANDARDS,
5757 and/or the 0.8.4.27 diff to check.
5758 * In full calls the compiler now does not generate checks for declared
5759 argument types for all arguments.
5760 * various threading fixes
5761 ** and some experimental patches which didn't make it into
5762 the main tree for this release, but which are shipped in
5763 contrib/experimental-thread.patch as a possible fix for some
5764 failures (deadlock, spinning...) in GC-intensive multithreaded
5766 * fixed PPC build problem (source code incompatibility of different
5767 library versions): added offsetof() hackery which attempts to divine
5768 where glibc maintainers put uc_mcontext today
5769 * fixed bug 282: compiler does not trust type assertions while passing
5770 arguments to a full call.
5771 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5772 &OPTIONAL VALUES type parameter.
5773 * fix bug 214: algorithm for noting rejected templates is now more
5774 similar to that of template seletion. (also reported by rydis on
5776 * fixed bug 141b: printing backquoted information readably and prettily
5777 inserts a space where necessary.
5778 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5779 (CHARACTER 10) are now reported as errors, rather than propagated
5780 as unknown types. (reported by piso on #lisp)
5781 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5782 with values NIL and :ERROR. (thanks to Milan Zamazal)
5783 * fixed bug 191c: CLOS now does proper keyword argument checking as
5784 described in CLHS 7.6.5 and 7.6.5.1.
5785 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5786 longer raise an error; further, using a list as a for-as-arithmetic
5787 counter now raises a meaningful error.
5788 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5789 now understood by sequence creation functions such as MAKE-SEQUENCE
5791 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5792 a STRING-INPUT-STREAM.
5793 * compiler enhancement: SIGNUM is now better able to derive the type
5795 * type declarations inside WITH-SLOTS are checked. (reported by
5797 * fixed some bugs revealed by Paul Dietz' test suite:
5798 ** incorrect optimization of TRUNCATE for a positive first
5799 argument and negative second.
5800 ** compiler failure in let-convertion during flushing dead code.
5801 ** compiler failure while deriving type of TRUNCATE on an
5802 interval, containing 0.
5803 ** ASH of a negative bignum by a negative bignum count now returns
5805 ** intersection of CONS types now canonicalizes properly, fixing
5806 inconsistencies in SUBTYPEP.
5808 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5809 * incompatible change: The --disable-debugger command line
5810 option now clobbers the debugger at a more fundamental
5811 level, by redefining #'INVOKE-DEBUGGER instead of by
5812 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5813 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5814 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5815 enter the debugger REPL and then suffer recursive errors
5816 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5817 while under the new system, BREAK in --disable-debugger mode
5818 terminates the system just as an unhandled error would.
5819 * fixed compiler performance when processing loops with a step >1;
5820 * bug fix: DOCUMENTATION now retrieves generic function
5821 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5822 support has been systematized, and now supports the methods
5823 specified by ANSI, along with a default method and a method for
5824 slot documentation. (reported by Nathan Froyd)
5825 * bug fix: effective methods associated with a generic function are
5826 no longer cached over a change of that generic function's method
5827 combination. (reported by Andreas Fuchs)
5828 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5829 names a non-existent directory. (thanks to Andreas Fuchs)
5830 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5831 the PPC platform, lead to stack corruption; this has been fixed.
5832 (reported by Rainer Joswig)
5833 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5834 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5835 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5836 arithmetic in general, is now much more reliable on the PPC
5838 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5839 platform now returns the right answer.
5840 * optimization: restored some effective method precomputation in
5841 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5842 precomputation is now tunable.
5843 * optimization: compiler-internal data structure use has been
5844 reviewed, and changes have been made that should improve the
5845 performance of the compiler by about 20%.
5846 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5847 simple-base-strings and simple-bit-vectors is improved.
5848 * optimization: the optimization of 32-bit logical and arithmetic
5849 functions introduced in version 0.8.3 on the x86 has been
5850 implemented on the mips, ppc and sparc platforms; an
5851 implementation of the same facility, but for 64-bit arithmetic,
5852 has been added for the alpha.
5853 * microoptimization: the compiler is better able to make use of the
5854 x86 LEA instruction for multiplication by constants.
5855 * bug fix: in some situations compiler did not report usage of
5856 generic arithmetic in (SPEED 3) policy.
5857 * bug 145b fix: compiler used wrong type specifier while converting
5858 MEMBER-types to numeric.
5859 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5861 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5862 index argument now works properly on the Alpha platform.
5863 * bug fix: floating point exception treatment on the Alpha platform
5865 * bug fix: FILE-POSITION works much better on string input and
5866 output streams. (thanks to Nikodemus Siivola)
5867 * bug fix: many threading/garbage collection symptoms sorted.
5868 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5869 might be pseudo-atomic.
5870 * internal change: Stopping for GC is now done with signals not
5871 ptrace. GC is now done in whichever thread wanted it, instead of
5873 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5875 * bug fix: result form in DO is not contained in the implicit
5877 * incompatible change: ICR structure is changed; the value part of
5878 CONTINUATION is now called LVAR; corresponding functions are
5879 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5880 * added type deriver for ISQRT (thanks to Robert E. Brown).
5881 * bug fix: better support for loading from the command line when an
5882 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5884 * fixed some bugs revealed by Paul Dietz' test suite:
5885 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5886 ** ROUND and FROUND now give the right answer when given very
5887 small float arguments.
5888 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5890 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5891 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5892 ** LCM should return a non-negative integer.
5893 ** PARSE-INTEGER returned the index of a terminator instead of the
5894 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5895 ** PARSE-INTEGER returned an incorrect index being applied to a
5897 ** LCM with two arguments of 0 returns 0 rather than signalling
5899 ** unsigned addition of a 32-bit constant with the high bit set no
5900 longer causes an internal compiler error on the x86.
5901 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5902 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5903 with negative last argument.
5904 ** byte specifiers with zero size and position no longer cause
5905 an error during type derivation.
5906 ** bignum multiplication on the Alpha platform now returns the
5908 * porting: The system now builds on SuSE AMD64, although it still
5909 generates a 32-bit binary.
5910 * .fasl file incompatibility: The fasl file version number has
5911 been incremented (because of the changes to internal compiler
5912 data structures referred to above).
5914 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5915 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5916 more accurately, on the Darwin kernel running on PowerPC hardware.
5917 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5918 * Compiler code deletion notes now signal a condition of type
5919 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5920 an associated MUFFLE-WARNING restart.
5921 * The compiler now performs limited argument count validation of
5922 constant format strings in FORMAT, and where appropriate in ERROR,
5923 CERROR and WARN. (thanks to Gerd Moellmann)
5924 * New ASDF-INSTALL contrib can be used for automatic download and
5925 installation of third-party Lisp code from CCLAN or other sites
5927 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5928 which forces another thread to execute a function supplied by the
5930 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5931 now accept and act upon their :ELEMENT-TYPE keyword argument.
5932 (reported by Martin Atzmueller, Edi Weitz)
5933 * bug fix: FILE-POSITION now accepts position designators up to
5934 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5935 is the greater. (thanks to Patrik Nordebo)
5936 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5937 Kalle Olavi Niemitalo)
5938 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5939 printable. (reported by Eric Marsden)
5940 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5941 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5942 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5943 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5944 (thanks to Stig Sandoe)
5945 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5946 UNREAD-CHAR now correctly includes the unread character in the
5947 target sequence. (thanks to Gerd Moellmann)
5948 * bug fix in threaded builds: the system can now be suspended and
5949 resumed by shell job control with minimal disruption.
5950 * bug fixes in times and timezones >2038AD
5951 * better handling of "where is GNU make?" problem in build scripts
5952 (thanks to Nikodemus Siivola)
5953 * new optimization: inside a named function any reference to a
5954 function with the same name is considered to be a self-reference;
5955 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5956 optimization quality.
5957 * new optimization on x86: logical functions and + now have
5958 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5959 used when the result is truncated to 32 bits.
5960 * VALUES declaration is partially enabled.
5961 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5962 * fixed some bugs revealed by Paul Dietz' test suite:
5963 ** The system now obeys the constraint imposed by
5964 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5965 types form a lattice under type intersection.
5966 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5967 ** ASSOC now ignores NIL elements in an alist.
5968 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5969 and (1+ MOST-POSITIVE-FIXNUM) answers.
5970 ** The addition of a method with invalid qualifiers to a generic
5971 function does not cause an error to be signalled immediately;
5972 a warning is signalled, and the error is generated only on
5973 calling the generic function.
5974 * changed .fasl file version number, in part to add type codes for
5975 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5976 obscure ANSI requirements
5978 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5979 * fixed bug 148: failure to inline-expand a local function left
5980 garbage, confusing the compiler.
5981 * fixed bugs 3cd: structure slot readers perform type check if the
5982 slot can have an invalid value (i.e. it is either not initialized
5983 or can be written with a less specific slot writer).
5984 * bug fix: the compiler now traps array references to elements off
5985 the end of an array; previously, the bounds checking in some
5986 circumstances could go off-by-one.
5987 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5989 * type declarations for array element types now obey the description
5990 on the CLHS page "Declaration TYPE", as per discussions on
5991 sbcl-help around 2003-05-08. This means that a declaration
5992 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5993 declaration, all references to BAR will be asserted or assumed
5994 (with THE, so dependent on compiler policy) to involve objects of
5995 type FOO. Note that no such declaration is implied in
5996 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5997 * declared types of functions from the "Conditions"
5998 chapter. (reported by Paul Dietz)
5999 * bug fix: CERROR accepts a function as its first argument.
6000 * bug fix: NTH an NTHCDR accept a bignum as index
6001 arguments. (reported by Adam Warner)
6002 * optimization: character compare routines now optimize comparing
6003 against a constant character. (reported by Gilbert Baumann)
6004 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6005 argument now works properly on the MIPS platform.
6006 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6007 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6008 declared to have a functional type, does not cause an error
6010 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6011 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6012 * fixed bug: if last continuation of a deleted block has a
6013 destination, this destination should be deleted too. (reported by
6015 * fixed a bug in the bootstrap process: the host compiler's values
6016 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6017 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6018 test case from Patrik Nordebo)
6019 * improved the ability of the disassembler on the PPC platform to
6020 provide helpful disassembly notes.
6021 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6022 the class in more cases than previously.
6023 * bug fix: FILE-POSITION now understands :START and :END for
6024 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6025 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6026 8) data. (thanks to David Lichteblau)
6027 * bug fix: it is possible to add a method to a generic function
6028 without lambda list.
6029 * bug fix: reader failed to signal END-OF-FILE inside an
6030 object representation. (reported by Nikodemus Siivola)
6031 * fixed some bugs revealed by Paul Dietz' test suite:
6032 ** LAST and [N]BUTLAST should accept a bignum.
6033 ** condition slot accessors are methods.
6034 ** (VECTOR NIL) is a subtype of STRING.
6036 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6037 * minor incompatible change: some nonsensical specialized lambda
6038 lists (used in DEFMETHOD) which were previously ignored now signal
6040 * minor incompatible change: the system is now aware of the types of
6041 variables in the COMMON-LISP package, and will signal errors for
6042 most violations of these type constraints (where previously they
6043 were silently accepted).
6044 * minor incompatible change: COMPILE-FILE now uses the freedom
6045 afforded (ANSI 3.2.2.3) to use derived function types for
6046 functions defined in the same file. This also permits the system
6047 to warn on static type mismatches and function
6048 redefinition. (Currently it does not work with high DEBUG level.)
6049 * minor incompatible change: VALUES declaration is disabled.
6050 * When issuing notes, the compiler now signals a condition of type
6051 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6052 restart for use in user handlers. It is expected that the
6053 COMPILER-NOTE condition will eventually become a condition
6054 supertype to a hierarchy of note types, which will then be
6055 handleable in a similar fashion. However, at the moment, no such
6056 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6057 but it's an implementation detail, not a classification for the
6059 * Changes in type checking closed the following bugs:
6060 ** type checking of unused values (192b, 194d, 203);
6061 ** template selection based on unsafe type assertions (192c, 236);
6062 ** type checking in branches (194bc).
6063 * A short form of VALUES type specifier has ANSI meaning (it has
6064 increased the number of situations when SBCL cannot perform type
6066 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6067 keywords or constants is permissible.
6068 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6069 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6070 classes. (thanks to Antonio Martinez)
6071 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6072 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6073 argument to a pretty-print stream. Instead, it leaves any such
6074 operations to DESCRIBE-OBJECT methods.
6075 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6077 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6078 lambda lists. (thanks to David Lichteblau)
6079 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6080 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6081 (thanks to Gerd Moellmann)
6082 * fixed bug 246: increased compilation speed of long
6083 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6085 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6087 * DEFCONSTANT now throws a condition of type
6088 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6089 constant to a non-EQL value; CONTINUE and ABORT restarts
6090 respectively change and preserve the value.
6091 * fixed bug 63: The code walker, part of the implementation of CLOS,
6092 is now better at handling symbol macros.
6093 * bug fix: There is no longer an internal implementation type named
6094 CL:LENGTH. (reported by Raymond Toy)
6095 * bug fix: In macro-like defining macros/special operators the
6096 implicit block does not enclose the lambda list.
6097 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6098 enclosed in parentheses) are not suitable as type specifiers, and
6099 their use properly signals an error now.
6100 * bug fix: An argument count mismatch for a type specifier in code
6101 being compiled no longer causes an unhandled error at compile
6102 time, but signals a compile-time warning.
6103 * fixed simple vector readable printing
6104 * bug fix: DESCRIBE takes more care over whether the class
6105 precedence list slot of a class is bound before accessing it.
6106 (reported by Markus Krummenacker)
6107 * bug fix: FORMATTER can successfully compile pretty-printer format
6108 strings which use variants of the ~* directive inside.
6109 * bug fix: SEARCH now applies its TEST predicate to the elements of
6110 the arguments in the correct order. (thanks to Wolfhard Buss)
6111 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6112 in type inference. (thanks to Robert E. Brown)
6113 * bug fix: Reading in symbols with an explicit package name of ""
6114 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6115 * fixed some bugs revealed by Paul Dietz' test suite:
6116 ** NIL is now allowed as a structure slot name.
6117 ** Arbitrary numbers, not just REALs, are allowed in certain
6118 circumstances in LOOP for-as-arithmetic clauses.
6119 ** Multiple class redefinitions before slot access no longer
6120 causes a type error.
6121 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6122 association between the name and a class.
6123 ** Generic functions with non-standard method-combination and over
6124 five methods all of which return constants no longer return NIL
6125 after the first few invocations. (thanks to Gerd Moellmann)
6126 ** CALL-NEXT-METHOD with no arguments now passes the original
6127 values of the arguments, even in the presence of assignment.
6128 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6130 ** DISASSEMBLE works with closures and funcallable instances.
6131 ** ADD-METHOD now returns the generic function, not the new method.
6132 ** FIND-METHOD signals an error if the lengths of the specializers
6133 is incompatible with the generic function, even if the ERRORP
6135 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6136 which its argument is a member.
6137 ** DEFCLASS only redefines the class named by its class-name
6138 argument if that name is the proper name of the class;
6139 otherwise, it creates a new class.
6140 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6141 of the UNBOUND-SLOT condition to the name of the slot.
6142 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6143 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6144 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6145 SLOT-MAKUNBOUND in the specified fashion.
6147 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6148 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6149 cross-compilation host. As a consequence, we can now bootstrap our
6150 way up to SBCL starting with a bare gcc toolchain and human-readable
6151 source code (first the source to CLISP, then the source to SBCL).
6152 * A contributed module containing a partial implementation of the
6153 simple-streams interface has been included. (thanks to Rudi
6155 * A contributed module implementing the RFC1321 Message Digest
6156 Algorithm, known as MD5, has been included.
6157 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6158 no longer has any effect, as the code controlled by this feature
6159 has been deleted. (As far as we know, no-one has ever built using
6160 this feature, and its semantics were confused in any case).
6161 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6162 work on conditions (as required by the ANSI specification),
6163 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6164 expected behaviour on conditions. Users should note, however,
6165 that such behaviour is not required by the ANSI specification,
6166 and so use of this behaviour may render their code unportable.
6167 * fixed some bugs revealed by Paul Dietz' test suite:
6168 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6170 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6171 ** SXHASH on condition objects no longer returns NIL.
6172 ** :ALLOCATION :CLASS slots are better treated; their values are
6173 updated on class redefinition, and initforms inherited from
6174 superclasses are applied.
6175 ** REMOVE-METHOD returns its generic function argument even when
6176 no method was removed.
6177 ** SHARED-INITIALIZE now initializes the values of the requested
6178 slots, including those with :ALLOCATION :CLASS.
6179 ** ALLOCATE-INSTANCE now works on structure classes defined via
6180 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6182 ** SLOT-EXISTS-P now works on conditions, as well as structures
6184 ** MAKE-LOAD-FORM now has the required methods on
6185 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6186 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6187 keyword, and now implements the SLOT-NAMES argument.
6188 ** methods with &OPTIONAL arguments no longer allow too many
6189 arguments to be passed in the call without error.
6190 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6191 option is consistent with the required arguments of the generic
6192 function lambda list.
6193 * bug fix: REQUIRE accepts a string designator. (Thanks to
6195 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6196 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6197 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6198 * bug fix: The compiler now checks for duplicated variables in macro
6200 * bug fix: SETQ on globals returns the correct value.
6201 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6202 not a COMPILER-ERROR (followed by some other strange error on
6203 choosing the CONTINUE restart).
6204 * bug fix: make.sh and friends are now more consistent in the way that
6205 they look for GNU "make".
6207 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6208 * experimental native threads support (on x86 Linux >=2.4 only).
6209 This is not compiled in by default: you need to add :SB-THREAD to
6210 the target features. See the "Beyond ANSI" chapter of the manual
6212 * fix for longstanding nonANSIism: The old distinction between
6213 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6214 The return value from CL:FIND-CLASS is now a CLOS class, and
6215 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6216 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6217 * An interface to the MetaObject Protocol, as described in Kiczales,
6218 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6219 MIT Press, 1991, is available from the SB-MOP package.
6220 * incompatible change: the SB-PCL package should now be considered
6221 a private implementation detail, and no longer a semi-private MOP
6223 * minor incompatible change: due to rearrangement for threads, the
6224 control stack and binding stack are now allocated at arbitrary
6225 addresses instead of being hardcoded per-port. Users affected by
6226 this probably have to be doing advanced things with shared
6227 libraries, and will know who they are.
6228 * minor incompatible change: Previously, all --eval forms used were
6229 processed with READ before any of them were processed with EVAL.
6230 Now each --eval form is processed with both READ and EVAL before
6231 the next --eval form is processed. (Thus package operations like
6232 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6233 work as the user might reasonably expect.)
6234 * minor incompatible change: *STANDARD-INPUT* is now only an
6235 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6237 * minor incompatible change: Y-OR-N-P is now character-oriented,
6238 not line oriented. Also, YES-OR-NO-P now works without errors.
6239 (thanks to Antonio Martinez)
6240 * sb-aclrepl module improvements: an integrated inspector, added
6241 repl features, and a bug fix to :trace command.
6242 * Known functions, which cannot be open coded by the backend, are
6243 considered to be able to check types of their arguments. (fixing
6244 a bug report by Nathan J. Froyd)
6245 * fixed a bug in computing method discriminating functions: It is
6246 now possible to define methods specialized on classes which have
6247 forward-referenced superclasses. (thanks to Gerd Moellmann)
6248 * fixed evaluation order in optional entries (reported by Gilbert
6250 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6251 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6252 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6253 required-by-AMOP NAME argument, as well as CLASS and
6254 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6255 * fixed bug 20: DEFMETHOD can define methods using names that are
6256 not the proper names of classes to designate class specializers.
6257 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6258 Unix file descriptors, instead of blowing up. (thanks to Antonio
6260 * Garbage collection refactoring: user-visible change is that a
6261 call to the GC function during WITHOUT-GCING will not do garbage
6262 collection until the end of the WITHOUT-GCING. If you were doing
6263 this you were probably losing anyway.
6264 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6265 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6266 TYPEP the latter but not the former.
6267 * The compiler issues a full WARNING for calls to undefined functions
6268 with names from the CL package.
6269 * MAP-INTO for a vector destination is open coded. (reported by
6270 Brian Downing on c.l.l)
6271 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6272 documentation string.
6273 * fixed some bugs revealed by Paul Dietz' test suite:
6274 ** COPY-ALIST now signals an error if its argument is a dotted
6276 ** Condition slots are now accessed more correctly in the presence
6277 of multiple initargs for a given slot.
6278 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6279 exclude restarts of the same name associated with a different
6281 ** DEFCLASS of forward-referenced classes with another
6282 forward-referenced class in the superclasses list no longer
6284 ** Condition slots are now initialized once each, not multiple
6285 times. (thanks to Gerd Moellmann)
6286 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6288 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6289 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6290 arguments contain duplicated elements.
6291 ** RESTART-CASE understands local macros.
6292 ** RESTART-CASE associates exactly its own restarts with a condition.
6293 ** ENDP in safe mode checks its argument to be of type LIST.
6294 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6295 in question is unbound.
6296 ** Optimized MAKE-INSTANCE functions no longer cause internal
6297 assertion failures in the presence of duplicate initargs.
6298 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6299 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6300 propagated even in the ctor optimized implementation of
6302 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6304 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6305 * a better implementation of SXHASH on (simple) bit vectors,
6306 measured both in execution speed and in distribution of results
6307 over the positive fixnums, has been installed. Likewise, a better
6308 implementation of EQUAL for simple bit vectors is now available.
6309 * fixed CEILING optimization for a divisor of form 2^k.
6310 * fixed bug 240 (emitting extra style warnings "using the lexical
6311 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6312 by Antonio Martinez)
6313 * fixed SXHASH, giving different results for NIL depending on type
6314 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6315 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6316 variable. (found by Rolf Wester)
6317 * SBCL does not ignore type declarations for special
6318 variables. (reported by rif on c.l.l 2003-03-05)
6319 * some bug fixes in contrib/sb-aclrepl/
6320 * fixed some bugs revealed by Paul Dietz' test suite:
6321 ** a bug in the CONS type specifier, whereby the CAR and CDR
6322 types got intertwined, has been fixed;
6323 ** the type system is now able to reason about the interaction
6324 between INTEGER and RATIO types more completely;
6325 ** APPEND, [N]REVERSE and NRECONC check that those their
6326 arguments, which must be proper lists, are really so;
6327 ** An array specialized to be unable to hold elements has been
6328 implemented, as required -- yes, really -- by ANSI;
6329 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6330 on malformed property lists;
6332 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6333 * incompatible packaging change: in line with Unix convention,
6334 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6335 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6336 * REQUIRE and PROVIDE are now optionally capable of doing something
6337 useful. See the documentation string for REQUIRE.
6338 * infrastructure for a managed SBCL contrib system: contributed
6339 modules in this release include:
6340 ** the ASDF system definition facility;
6341 ** an interface to the BSD Sockets API;
6342 ** an ACL-like convenience interface to the repl;
6343 (thanks to Kevin Rosenberg)
6344 ** an implementation of ROTATE-BYTE, with efficient implementation
6346 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6347 gives a closer approximation to the right answer than previously.
6348 (thanks to Raymond Toy)
6349 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6350 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6351 optional environment arguments, as required by ANSI.
6352 * fixed bugs in other functions taking environment objects, allowing
6353 calls with an explicit NIL environment argument to be compiled
6355 * fixed bug 228: primary return values from
6356 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6357 COMPILE or FUNCTION.
6358 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6359 :TYPE will no longer signal errors on innocuous objects.
6360 * fixed bug 231b: SETQ is better at respecting type declarations in
6361 the lexical environment.
6362 * fixed a bug in DEFCLASS: classes named by symbols with no or
6363 unprintable packages can now be defined.
6364 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6365 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6366 * fixed compiler failure related to checking types of functions.
6367 (reported by Robert E. Brown)
6368 * the compiler is now much more consistent in its error-checking
6369 treatment of bounding index arguments to sequence functions: in
6370 (SAFETY 3) code, errors will be signalled in almost all cases if
6371 invalid sequence bounding indices are passed to functions defined
6372 by ANSI to operate on sequences.
6373 * fixed a bug in the build procedure: documentation of SBCL-specific
6374 packages is now preserved and available in the final Lisp image.
6375 * lifted FDEFINITION lookup out of loops in the implementation of
6376 many list operations. (thanks to Robert E. Brown)
6377 * fixed a bug in the reader: the #n# reader macro now works for
6378 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6379 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6380 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6381 E. Brown and Tony Martinez respectively)
6382 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6383 SLOT-BOUNDP: in particular, it is now able to optimize them much
6384 better, and is now not vulnerable to having packages renamed.
6385 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6386 always called when a slot is not present in an instance. (thanks
6388 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6389 longer signal an error on unreading a character following EOF on
6390 the previous constituent stream. (thanks to Tony Martinez)
6391 * fixed some bugs revealed by Paul Dietz' test suite:
6392 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6393 not just nonnegative fixnums;
6394 ** the logical bit-array operators such as BIT-AND now accept an
6395 explicit NIL for their "opt-arg" argument (to indicate a
6396 freshly-consed result bit-array);
6397 ** ELT now signals an error on an invalid sequence index in safe
6399 ** the type system is now cleverer about negations of numeric
6400 types, and consequently understands the BIGNUM and RATIO types
6402 ** the type system is now cleverer about the interaction between
6403 INTEGER and RATIO types: while bugs still remain, many more
6404 cases are accurately computed;
6405 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6406 if it is in the last clause;
6407 ** CONSTANTLY now correctly returns a side-effect-free function in
6409 ** DECLARE is no longer treated as a special-operator; in
6410 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6411 * incremented fasl file version number due to the change in the
6412 DEFSTRUCT-SLOT-DESCRIPTION structure.
6414 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6415 * minor incompatible change: code processed by the "interpreter" or
6416 EVAL now has a compilation optimization policy of (DEBUG 2)
6417 (changed from (DEBUG 1)) to improve debuggability of interactive
6418 development, and to allow the use of the debug RETURN command in
6420 * an experimental implementation of the RETURN command for the
6421 debugger has been included. (thanks to Frederik Kuivinen)
6422 * fixed bug 62: constraints were not propagated into a loop.
6423 * fixed bug in embedded calls of SORT (reported and investigated by
6425 * fixed some bugs revealed by Paul Dietz' test suite:
6426 ** printing and reading of arrays with some dimensions having
6427 length 0 (thanks to Gerd Moellmann);
6428 ** BOA constructor with &AUX argument without a default value does
6429 not cause a type error;
6430 ** CONSTANTP now returns true for all self-evaluating objects.
6432 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6433 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6434 accessors that are related by inheritance, as specified in the
6435 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6436 Valtteri Vuorikoski)
6437 * The compiler is now able to inline functions that were defined in
6438 a complex lexical environment (e.g. inside a MACROLET).
6439 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6441 * Support for the upcoming FreeBSD-5.0 release has been included.
6442 (thanks to Dag-Erling Smorgrav)
6443 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6444 effect when it is not in a toplevel context.
6445 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6446 stand a better chance of being correct. (thanks to Gerd
6448 * fixed bug in COERCE, which now signals an error on coercing a
6449 rational to a bounded real type which excludes the expected
6451 * The compiler is now able to derive types more accurately from the
6452 COERCE and COMPILE functions.
6453 * fixed bug 223: functional binding is considered to be constant
6454 only for symbols in the CL package.
6455 * fixed bug 231: SETQ did not check the type of a variable being set
6456 (reported by Robert E. Brown)
6457 * A new optimization for MAKE-INSTANCE has been included, fixing
6458 various bugs (including relating to :ALLOCATION :CLASS slots and
6459 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6461 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6462 ** As required by ANSI, LOOP now disallows anonymous collection
6463 clauses such as COLLECT I in conjunction with aggregate boolean
6464 clauses such as THEREIS (= I 1);
6465 ** LOOP now signals an error when any variable is reused in the
6466 same loop (including the potentially useful construct analogous
6467 to WITH A = 1 WITH A = (1+ A);
6468 ** IT is only a special loop symbol within the first clause of a
6469 conditional loop clause;
6470 ** LOOP with a typed iteration variable over a hashtable now
6471 signals a type error iff it should.
6472 * fixed some other bugs revealed by Paul Dietz' test suite:
6473 ** FILE-STREAM now names the class previously known as FD-STREAM;
6474 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6475 argument) no longer signals an error;
6476 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6477 of the slot symbol, rather than using the current package
6478 ((:CONC-NAME "") continues to intern the slot's name in the
6480 * incremented fasl file version number, because of the incompatible
6481 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6482 of the new implementation of DEFINE-COMPILER-MACRO.
6484 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6485 * Support for building SBCL for MIPS platforms running in
6486 little-endian mode has now been checked in, and basic
6487 functionality on said platforms verified.
6488 * minor incompatible change: PCL now records the pathname of a file
6489 in which methods and the like are defined, rather than its
6491 * minor incompatible change: TRUENAME now considers the truename of
6492 a file naming a directory to be the pathname with :DIRECTORY
6493 component indicating that directory.
6494 * minor incompatible change: a NAMED clause in the extended form of
6495 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6496 reason for the previous behaviour is unclear.
6497 * more systematization and improvement of CLOS and MOP conformance
6498 in PCL (thanks to Gerd Moellman and Pierre Mai):
6499 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6501 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6502 primary methods with no specializers;
6503 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6505 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6506 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6507 FORWARD-REFERENCED-CLASSes; error reporting on
6508 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6510 ** SXHASH on CLOS instances now uses a slot internal to the
6511 instance to return different numbers on distinct instances,
6512 while preserving the same return value through invocations of
6514 ** DEFMETHOD signals errors when methods with longer incongruent
6515 lambda lists are added to generic functions;
6516 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6517 CLASS, as specified in AMOP;
6518 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6519 on the order returned by the primary method for classes of
6520 class STANDARD-CLASS;
6521 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6522 * fixed some bugs shown by Paul Dietz' test suite:
6523 ** DOLIST puts its body in TAGBODY;
6524 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6526 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6527 value producing form;
6528 ** if more variables are given to PROGV than values, extra
6529 variables are bound and made to have no value;
6530 ** NSUBSTITUTE on list arguments gets the right answer with
6532 ** ELT signals an error of type TYPE-ERROR when the index argument
6533 is not a valid sequence index;
6534 ** LOOP signals (at macroexpansion time) an error of type
6535 PROGRAM-ERROR when duplicate variable names are found;
6536 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6537 ** FUNCALL of special-operators now cause an error of type
6539 ** PSETQ now works as required in the presence of side-effecting
6540 symbol-macro places;
6541 ** NCONC accepts any object as its last argument;
6542 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6544 ** loop-for-as-package does not require a package to be explicitely
6546 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6548 * fixed bug 166: compiler preserves "there is a way to go"
6549 invariant when deleting code.
6550 * fixed bug 172: macro lambda lists with required arguments after
6551 &REST arguments now cause an error to be signalled. (thanks to
6553 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6554 bug. (thanks to Matthew Danish)
6555 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6557 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6558 arguments are lexically rebound. (thanks to Gerd Moellmann and
6560 * fixed bug 194: error messages are now more informative when there
6561 is no primary method applicable in a call to a generic
6562 function. (thanks to Gerd Moellmann)
6563 * fixed bug in command line argument checking (thanks to Julian
6565 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6566 (thanks to Matthew Danish)
6567 * incremented fasl file version number, because of the
6568 SXHASH-related changes in the layout of CLOS data structures
6570 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6571 * minor incompatible change: The runtime (the Unix executable named
6572 "sbcl") is now much pickier about the .core files it will load.
6573 Essentially it now requires .core files to descend from the same
6574 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6575 as the runtime does. (The intent is to prevent the crashes which
6576 can occur, and which can even be reported as mysterious failures,
6577 when people patch the sources or change the build parameters
6578 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6579 sbcl and .core files.)
6580 * fixed bug: VALUES-LIST is no longer optimized away.
6581 * fixed bug 142: The FFI conversion of C string values to Lisp
6582 string values no longer conses excessively. (thanks to Nathan
6583 Froyd porting Raymond Toy's fix to CMU CL)
6584 * began to systematize and improve MOP conformance in PCL (thanks to
6585 Nathan Froyd, Gerd Moellman and Pierre Mai):
6586 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6588 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6589 ** FINALIZE-INHERITANCE is now called on class finalization;
6590 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6591 argument precedence order.
6592 * fixed bug 202: The compiler no longer fails on functions whose
6593 derived types contradict their declared type.
6594 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6595 so it can be non-toplevel.
6596 * The fasl file version number has changed (because of the new
6597 implementation of DEFMACRO).
6598 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6599 safe code, that any length requirement by their type-specifier
6600 argument is valid. The exceptions to this are described in bug
6602 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6603 functions now check the types of their inputs as required by ANSI.
6604 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6605 introduced symbol is DECLAREd to be SPECIAL.
6606 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6607 * fixed bug: :COUNT argument to sequence functions may be negative
6608 * fixed bug: body of DO-SYMBOLS may contain declarations
6609 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6610 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6611 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6612 symbol macro only once
6613 * fixed printing of call frame when argument list is unavailable
6614 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6615 * compiler no longer signals WARNING on unknown keyword
6618 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6619 * A beta-quality port to the mips architecture running Linux,
6620 based on the old CMUCL backend, has been made. It has been tested
6621 on a big-endian kernel, and works sufficiently well to be able to
6622 rebuild itself; it has not been tested in little-endian mode.
6623 * fixed an inconsistency between gencgc.c and purify.c which made
6624 dumping/loading .core files unreliable
6625 * fixed bug 120a: The compiler now deals correctly with IFs where
6626 the consequent is the same as the alternative, instead of
6627 misderiving the return type. (thanks to Alexey Dejneka)
6628 * fixed bug 113: Logical pathnames are now dumpable (the logical
6629 host is resolved at load-time, throwing an error if it is not
6631 * fixed bug 174: FORMAT's error message is slightly clearer when a
6632 non-printing character is used in a format directive.
6633 * fixed several bugs in compiler checking of type declarations, i.e.
6634 violations of the Python "declarations are assertions" principle
6635 (thanks to Alexey Dejneka)
6636 * fixed several bugs in PCL's error checking (thanks to Gerd
6638 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6640 * fixed bug in compilation of functions as first class values
6641 (thanks to Antonio Martinez-Shotton)
6642 * The compiler's handling TYPE-ERRORs which it can prove will
6643 inevitably happen at runtime has been cleaned up and corrected
6644 in several ways. (thanks to Alexey Dejneka)
6645 * improved argument type checking for various basic arithmetic
6646 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6647 lavished on them in the past that they can be compiled in many
6648 ways in different special cases
6649 * fixed bug 181: compiler checks validity of user supplied type
6651 * cleaned up code flushing in optimization: Function calls which
6652 should signal errors for safety purposes (e.g. which ANSI says
6653 should signal errors when their arguments are of incorrect type)
6654 are no longer optimized away.
6655 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6656 * incremented fasl file version number, because changes in the
6657 implementation of sequence functions like COERCE caused
6658 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6659 in old inline expansions) to become undefined. (Actually these
6660 changes were later undone, so we might very well be binary
6661 compatible with 0.7.7 after all, but leaving the version number
6662 incremented seemed like the simplest and most conservative
6665 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6666 * An alpha-quality port to the parisc architecture running Linux,
6667 based on the old CMUCL backend, has been made. This, even more so
6668 than the other backends, should be considered still a work in
6669 progress; known problems include that the Linux kernel in 64-bit
6670 mode does not propagate the correct sigcontext structure to
6671 userspace, and consequently SBCL on a parisc64 kernel will not
6673 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6674 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6675 suppressed.) Also now that the compiler is looking at declarations
6676 in the environment, it checks optimization declarations as well,
6677 and suppresses inlining when (> DEBUG SPEED).
6678 * More fixes have been made to treatment of floating point exception
6679 treatment and other Unix signals. In particular, floating point
6680 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6681 * The detection and handling of control stack exhaustion (infinite
6682 or very deeply nested recursion) has changed. Stack exhaustion
6683 detection is now done by write-protecting pages at the OS level
6684 and applies at all optimization settings; when found, a
6685 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6686 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6687 be caught using IGNORE-ERRORS.
6688 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6689 correctly when transforming recursive LABELS functions to LETs.
6690 (thanks to Alexey Dejneka)
6691 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6692 that are names of constants or global variables.
6693 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6694 alien routines with docstrings.
6695 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6696 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6698 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6699 (thanks to Eric Marsden)
6700 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6701 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6702 * Bug fix: The SPARC backend can now compile functions involving
6703 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6704 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6705 to a functions expecting a PATHNAME-DESIGNATOR.
6706 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6707 lambda lists. (thanks to Alexey Dejneka)
6708 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6709 functions so that EXPORTing the name of the class doesn't cause
6710 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6711 to Antonio Martinez for reporting this)
6712 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6713 constant-folded without failing an assertion. (thanks to Einar
6714 Floystad Dorum for reporting this)
6715 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6716 types are now dealt with more correctly by the compiler.
6717 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6718 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6719 behaviour analogous to RENAME-FILE. This puts its behaviour more
6720 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6722 * The fasl file version number has changed again. (because of the
6723 bug fix involving the names of PCL MAKE-INSTANCE functions)
6725 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6726 * bug fix: Floating point exceptions are treated much more
6727 consistently on the x86/Linux and PPC/Linux platforms.
6728 * Array initialization with :INITIAL-ELEMENT is now much faster for
6729 cases when the compiler cannot open code the array creation, but
6730 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6731 array accesses have also seen a speed increase.
6732 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6733 specified. (This was at the root of some bad interactions between
6734 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6736 * bug fix: Internal error arguments for undefined functions are now
6737 computed correctly on the PPC/Linux platform.
6738 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6739 Raymond Toy's patch for CMU CL)
6740 * Support for the Solaris 9 operating environment has been included
6741 (thanks to Daniel Merritt)
6742 * A very ugly but hopefully complete draft of the missing FFI chapter
6743 of the manual has been created by reformatting the corresponding
6744 CMU CL manual chapter into (currently very ugly and incoherent)
6745 DocBook and bringing it up to date for SBCL behavior. Thus, the
6746 manual is now essentially complete, at least by my extreme
6747 once-and-only-once standards, whereby it's acceptable to refer to
6748 the doc strings of SB-EXT functions as the primary documentation.
6749 * The fasl file version number has changed again, due to cleanup of
6750 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6751 is no longer a static symbol.)
6753 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6754 * SBCL now builds with OpenMCL (version 0.12) as the
6755 cross-compilation host; also, more progress has been made toward
6756 bootstrapping under CLISP.
6757 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6759 * bug 158 fixed: The compiler can now deal with integer loop
6760 increments different from 1; fixing this turned out also to fix
6762 * bug 169 fixed: no more bogus warnings about using lexical bindings
6763 despite the presence of perfectly good SPECIAL declarations (thanks
6764 to David Lichteblau)
6765 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6766 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6767 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6769 * bug 180 fixed: Method combination specifications no longer ignore
6770 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6771 * bug fix: Structure type predicate functions now check their argument
6772 count as they should.
6773 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6774 correctly. (thanks to Pierre Mai)
6775 * minor incompatible change: The --noprogrammer option is deprecated
6776 in favor of the new --disable-debugger option, which is very similar.
6777 (The major difference is that it takes effect at a slightly different
6778 time at startup, causing handling of errors in --sysinit and
6779 --userinit files will be affected differently.) The
6780 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6781 been added to allow this functionality to be controlled from ordinary
6782 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6783 maintainers, who might want to run non-interactive scripts to
6784 build SBCL cores which will later be used interactively.)
6785 * minor incompatible change: The LOAD function no longer, when given
6786 a wild pathname to load, loads all files matching that pathname.
6787 Instead, an error of type FILE-ERROR is signalled.
6789 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6790 * bug 147 fixed: The compiler preserves its block link/count
6791 invariants more correctly now so that it doesn't crash. (thanks
6793 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6795 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6796 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6797 no-value-for-this-character as NIL (as specified by ANSI).
6798 * HOST-NAMESTRING on physical pathnames now returns a string that is
6799 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6800 (thanks to Christophe Rhodes)
6801 * The Alpha port handles icache flushing more correctly. (thanks to
6803 * More progress has been made toward bootstrapping under CLISP. (thanks
6804 to Christophe Rhodes)
6805 * The fasl file format has changed again, because dynamic loading
6806 on OpenBSD (which has non-ELF object files) motivated some cleanups
6807 in the way that foreign symbols are transformed and passed around.
6808 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6809 is no longer treated as whitespace by the reader, but instead as
6810 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6811 |A
\x7fB|, instead of A as it used to.
6813 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6814 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6815 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6816 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6817 this as of 0.7.1.45, but was left out of the previous news section
6818 (thanks to Dan Barlow)
6819 * SBCL now runs on the Solaris operating system on SPARC architectures
6820 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6821 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6822 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6823 * SPARC backend cleanups, allowing builds of cores optimized for V8
6824 and V9 SPARCS, and also emission of code targeted to a particular
6825 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6827 * SBCL is closer to bootstrapping under CLISP, thanks to various
6828 fixes by Christophe Rhodes.
6829 * The fasl file format has changed again, to allow the compiler's
6830 INFO database to support symbol macros.
6831 * The user manual (in doc/) is formatted into HTML more nicely.
6832 (thanks to coreythomas)
6833 * The system is smarter about SUBTYPEP relationships, especially
6834 those involving NOT types (including types such as ATOM which are
6835 represented internally using NOT types). Thus SUBTYPEP is less
6836 likely to return (VALUES NIL NIL) in general, and in particular
6837 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6839 * The fasl file format has changed again, because the internal
6840 representation of types now includes a new slot to support the new
6841 SUBTYPEP-of-NOT-types logic.
6842 * (not a change in the main branch of SBCL, but a related prototype
6843 which can hopefully be merged into the main branch of SBCL in the
6844 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6845 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6846 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6847 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6848 dispatch macro character combinations. (thanks to Alexey Dejneka)
6849 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6850 that superficially look like logical namestrings correctly.
6851 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6853 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6854 default supplied-p) for &optional and &key arguments. (thanks to
6857 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6858 * incompatible change: The compiler is now less aggressive about
6859 tail call optimization, doing it only when (> SPACE DEBUG) or
6860 (> SPEED DEBUG). (This is an incompatible change because there are
6861 programs which relied on the old CMU-CL-style behavior to optimize
6862 away their unbounded recursion which will now die of stack overflow.)
6863 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6864 for non-GENCGC systems has been increased to 20M (since that
6865 seems much closer to the likely performance optimum for modern
6866 systems than the old 4M value was)
6867 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6868 and *DEBUG-PRINT-LEVEL*
6869 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6870 of CMU CL's support for SPARC, and various endianness and other
6871 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6872 * new syntactic sugar for the Unix command line: --load foo.bar is now
6873 an alternate notation for --eval '(load "foo.bar")'.
6875 ** The system now detects stack overflow and handles it gracefully,
6876 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6877 optimization settings. (This is a good thing in general, and
6878 its introduction in this version should be particularly timely
6879 for anyone whose code fails because of suppression of tail
6881 ** The system now hunts for the C variable "environ" in a more
6882 devious way, to avoid segfaults when the C library version differs
6883 between compile time and run time. (thanks to Christophe Rhodes)
6884 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6885 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6886 ** The compiler no longer issues bogus style warnings for undefined
6887 classes in the same source file as the DEFCLASSes which defined
6888 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6890 ** fixes in CONDITION class precedence list for undefined function
6891 errors (thanks to Alexei Dejneka)
6892 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6893 correctly. (thanks to Dan Barlow)
6894 ** portability fixes aiming at bootstrapping under CLISP (thanks
6895 to Dave McDonald and Christophe Rhodes)
6896 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6897 ** fixes in type translation and and type inference (thanks to
6899 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6900 ** various fixes in the new ports (thanks to Dan Barlow)
6901 * several changes related to debugging:
6902 ** suppression of tail recursion, as noted above
6903 ** stack overflow detection, as noted above
6904 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6905 is now the default. (For some time encapsulation has been more
6906 reliable than the breakpoint-based :ENCAPSULATE NIL
6907 implementation, at least on X86 systems; and I just noticed that
6908 encapsulation also seems closer to the spirit of the ANSI
6911 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6913 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6914 up properly again. (There was a packaging bug in 0.7.0 which
6915 left their definitions in SB-SYS::LOAD-FOREIGN and
6916 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6917 vital for most things which interface to C-level interfaces,
6918 like extensions working with sockets or databases or
6919 Perl-compatible regexes or whatever, and the need to fix
6920 this bug is the main reason that 0.7.1 was released so
6922 ** DEFGENERIC is now choosier about the methods it redefines, so that
6923 reLOADing a previously-LOADed file containing DEFGENERICs does
6924 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6925 cycle now works as it should. (thanks to Alexey Dejneka)
6926 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6927 fixed by Christophe Rhodes. (He actually submitted this patch
6928 months ago, and I delayed until after 0.7.0.)
6929 ** Bug 111 (internal compiler confusion about runtime checks on
6930 FUNCTION types) was fixed by Alexey Dejneka.
6931 * Some internal cleanups (getting rid of variables which aren't
6932 needed now that the byte interpreter is gone) caused the fasl
6933 file format number to change again.
6935 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6936 * major incompatible change: The default fasl file extension, i.e. the
6937 default extension for files produced by COMPILE-FILE, has changed
6938 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6940 ** There are many changes in the implementation of the compiler.
6941 SBCL is now essentially a compiler-only implementation of ANSI
6942 Common Lisp. EVAL still "interprets" a few special cases, but
6943 almost all the interesting cases are handled by creating
6944 a LAMBDA expression, calling COMPILE on it, then calling
6945 FUNCALL on the result.
6946 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6947 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6948 Since the code is newer, there might still be some new bugs
6949 (though not as many as before Martin Atzmueller's fixes:-). But
6950 the new code is substantially simpler and clearer, and hopefully
6951 any remaining bugs will be simpler, less fundamental, and more
6952 fixable then the bugs in the old code.
6953 ** The revised compiler is still a little unsteady on its feet.
6955 *** The debugging information it produces (particularly the names
6956 of FUNCTION objects) is sometimes much less useful than what
6957 the old compiler produced.
6958 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6959 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6960 within a MACROLET) has been temporarily weakened.
6961 ** There are new compiler optimizations for various functions:
6962 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6963 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6964 *** the math functions TRUNCATE, FLOOR, and CEILING
6965 *** the function-of-all-trades COERCE
6966 Mostly these should be transparent, but there's one
6967 potentially-annoying problem (bug 117): when the compiler
6968 inline-expands a function and does type analysis on the result,
6969 it can create control paths which have type mismatches, and
6970 when it can't prove that those control paths aren't taken,
6971 it will issue WARNINGs about the type mismatches. This is
6972 a particular problem in practice for the new sequence functions.
6973 It's not clear how this should be fixed, and for now, a
6974 workaround is given in the entry for 117 in the BUGS file.
6975 ** (Because of the interaction between the two previous items --
6976 occasional inlining problems and new inline expansions -- some
6977 of the new sequence function optimizations won't really kick in
6978 completely until debugging information, and then inlining, are
6979 straightened out in some future version.)
6980 * minor incompatible changes:
6981 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6982 DIRECTORY no longer implicitly promotes NIL slots of its
6983 pathname argument to :WILD. In particular, when you ask for the
6984 contents of a directory (which you used to be able to do without
6985 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6986 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6987 ** changes in behavior that ANSI explicitly defines to be
6988 implementation dependent:
6989 *** The new compiler-only implementation still conforms with ANSI,
6990 but acts a little different than before. Besides the obvious
6991 changes in performance tradeoffs (that the cost per form passed
6992 to EVAL has gone up, and the cost per form executed by EVAL
6993 has gone down), the behavior of the system changes a little
6994 because there are no longer any interpreted function objects.
6995 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6996 e.g. doing COMPILE on the output of interactive DEFUN is
6998 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7000 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7001 has changed from (:CL) to NIL.
7002 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7003 e.g. #\Newline and #\Tab, don't have names specified in the
7004 ANSI Common Lisp standard, is now based on their ASCII symbolic
7005 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7006 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7007 are no longer used for output.
7008 ** changes in internal implementation constants:
7009 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7010 4 million. (If your application spends a lot of time GCing and
7011 you have a lot of RAM, you might want to experiment with
7012 increasing it even more.)
7013 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7014 However, almost all old code should still continue to work without
7015 immediate update, as SB-C-CALL is now a (deprecated) nickname
7017 ** Old operator names in the style DEF-FOO are now deprecated in
7018 favor of new corresponding names DEFINE-FOO, for consistency with
7019 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7020 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7021 internal symbols, but a few supported extensions like
7022 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7023 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7024 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7025 etc. as you get deeper into recursive calls to the debugger
7026 command loop, instead of the old "5]", "5]]", "5]]]"
7027 sequence. (I was motivated to do this when squabbles between
7028 ILISP and SBCL left me very deeply nested in the debugger. In the
7029 short term, this change will probably provoke more ILISP/SBCL
7030 squabbles, but hopefully it will be an improvement in the long run.)
7031 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7032 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7033 function, since declaiming return types involving aliens is
7034 (1) annoyingly messy to do by hand and (2) vital to efficient
7035 compilation of code which calls such functions.
7036 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7037 longer reexported by the SB-EXT package. They're solely useful
7038 for alien code, so it seems more logical that you should get
7039 them from the SB-ALIEN package, not in SB-EXT.
7040 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7041 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7042 features. Instead, the code that they used to control is always
7043 built into the system.
7044 * many other bug fixes
7045 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7046 advantage of the new EVAL-WHEN stuff and to clean them up in
7047 general, and they are now more ANSI-compliant in a number of
7048 ways. Martin Atzmueller is responsible for a lot of this.
7049 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7051 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7052 *** correct ERROR type for various file operations
7053 *** some fixes for Lisp streams
7054 *** DEFMETHOD syntax checking
7055 *** changing old weird representation of debug information as
7056 strings (which, among their other deficiencies, don't transform
7057 correctly when you rename packages, and don't change their
7058 print representation when you change things like *PACKAGE*
7059 and *PRINT-LENGTH*) to symbols and lists of symbols
7060 He also made several improvements and fixed several bugs in DESCRIBE.
7061 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7063 *** misbehavior of WRITE-STRING/WRITE-LINE
7064 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7065 and several other LOOP problems as well
7066 *** DIRECTORY when similar filenames are present
7067 *** DEFGENERIC with :METHOD options
7068 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7069 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7070 *** argument ordering in FIND with :TEST option
7071 *** mishandled package designator argument in APROPOS-LIST
7072 *** various problems in the backquote readmacro
7073 *** a bug in APROPOS
7074 *** probably some others that I'm not describing very well here,
7075 since the CVS log documents them by reference to sbcl-devel
7076 messages, and the SourceForge archives aren't working well.:-(
7077 ** Dan Barlow improved the Alpha port (and is making progress on the
7078 PPC port, for those of you who think different).
7079 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7080 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7081 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7082 continues to work on the SPARC port (for those of you in a position
7083 to look down upon our little PC-compatible boxes from a great height).
7084 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7085 and uses that copy, rather than the current dynamic value, when
7086 it's trying to decide whether to truncate output. Thus e.g.
7087 (let ((*print-lines* 50))
7088 (pprint-logical-block (stream nil)
7090 (let ((*print-lines* 8))
7091 (print (aref possiblybigthings i) stream)))))
7092 should now truncate the logical block only at 50 lines, instead of
7093 often truncating it at 8 lines, as it did before.
7094 * The doc/cmucl/ directory, containing old CMU CL documentation
7095 from the time of the fork, is no longer part of the base system.
7096 SourceForge has shut down its anonymous FTP service, and with it
7097 my original plan for distributing the old CMU CL documentation
7098 there. For now, if you need these files you can download an old
7099 SBCL source release and extract them from it.
7100 * The fasl file version number changed again, for dozens of reasons,
7101 some of which are apparent above.
7103 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7104 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7105 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7106 patch, so that DISASSEMBLE output is much nicer.
7107 * The code in the SB-PROFILE package now seems reasonably stable.
7108 I still haven't decided what the final interface should look like
7109 (I'd like PROFILE to interact cleanly with TRACE, since both
7110 facilities use function encapsulation) but if you have a need
7111 for profiling now, you can probably use it successfully with
7112 the current CMU-CL-style interface.
7113 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7114 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7115 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7116 link now returns the dangling link itself, and for similar
7117 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7118 link itself. (In these cases the old code signalled an error and
7119 looped endlessly, respectively.) Thus, DIRECTORY now works even
7120 in the presence of dangling and cyclic symbolic links.
7121 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7122 is now a supported extension again, since the consensus on
7123 sbcl-devel was that it can be useful for ordinary development
7124 work, not just for debugging SBCL itself.
7125 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7126 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7127 that currently-defined functions might be redefined later with
7128 different return types.
7129 * Hash tables can be printed readably, as inspired by CMU CL code
7130 of Eric Marsden and SBCL code of Martin Atzmueller.
7131 * better error handling in CLOS method combination, thanks to
7132 Martin Atzmueller porting Pierre Mai's CMU CL patches
7133 * more overflow fixes for >16Mbyte I/O buffers
7134 * A bug in READ has been fixed, so that now a single Ctrl-D
7135 character suffices to cause end-of-file on character streams.
7136 In particular, now you only need one Ctrl-D at the command
7137 line (not two) to exit SBCL.
7138 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7140 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7141 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7142 does the right thing.
7143 * The implementation of some type tests, especially for CONDITION
7144 types, is now tidier and maybe faster, due to CMU CL code
7145 originally by Douglas Crosher, ported by Martin Atzmueller.
7146 * Some math functions have been fixed, and there are new
7147 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7148 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7149 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7150 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7151 likely to be built into sbcl-0.7.0.)
7152 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7153 CL, ported to SBCL by Martin Atzmueller)
7154 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7155 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7156 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7157 * There's a new slam.sh hack to shorten the edit/compile/debug
7158 cycle for low-level changes to SBCL itself, and a new
7159 :SB-AFTER-XC-CORE target feature to control the generation of
7160 the after-xc.core file needed by slam.sh.
7161 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7162 COMPILE-FILE is no longer supported, so that now every function
7163 gets an entry point, so that block compilation looks a little
7164 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7165 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7166 returns the number of bytes consed since the system started,
7167 rather than the number consed since the first time the function
7168 was called. (The new definition parallels ANSI functions like
7169 CL:GET-INTERNAL-RUN-TIME.)
7170 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7171 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7172 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7173 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7174 * Fasl file version numbers are now independent of the target CPU,
7175 since historically most system changes which required version
7176 number changes have affected all CPUs equally. Similarly,
7177 the byte fasl file version is now equal to the ordinary
7180 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7181 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7182 is no longer recognized. I apologize for this, because it was
7183 listed in SB-EXT as a supported extension, but I found that
7184 its existing behavior was poorly specified, as well as incorrectly
7185 specified, and it looked like too much of a mess to straighten it
7186 out. I have enough on my hands trying to get ANSI stuff to work..
7187 * many patches ported from CMU CL by Martin Atzmueller, with
7188 half a dozen bug fixes in pretty-printing and the debugger, and
7189 half a dozen others elsewhere
7190 * fixed bug 13: Floating point infinities are now supported again.
7191 They might still be a little bit flaky, but thanks to bug reports
7192 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7193 as flaky as they were.
7194 * The --noprogrammer command line option is now supported. (Its
7195 behavior is slightly different in detail from what the old man
7196 page claimed it would do, but it's still appropriate under the
7197 same circumstances that the man page talks about.)
7198 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7199 are now supported, and enabled by default. Thus, the compiler can
7200 handle many floating point and complex operations much less
7201 inefficiently. (Thus e.g. you can implement a complex FFT
7203 * The compiler now detects type mismatches between DECLAIM FTYPE
7204 and DEFUN better, and implements CHECK-TYPE more correctly, and
7205 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7206 thanks to patches from Martin Atzmueller.
7207 * various fixes to make the cross-compiler more portable to
7208 ANSI-conforming-but-different cross-compilation hosts (notably
7209 Lispworks for Windows, following bug reports from Arthur Lemmens)
7210 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7211 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7212 fixed thanks to Pierre Mai's CMU CL patches.
7213 * fixes to keep the system from overflowing internal counters when
7214 it tries to use i/o buffers larger than 16M bytes
7215 * fixed bug 45a: Various internal functions required to support
7216 complex special functions have been merged from CMU CL sources.
7217 (When I was first setting up SBCL, I misunderstood a compile-time
7218 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7219 * improved support for type intersection and union, fixing bug 12
7220 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7221 more obscure bugs as well
7222 * some steps toward byte-compiling non-performance-critical
7223 parts of the system, courtesy of patches from Martin Atzmueller
7224 * Christophe Rhodes has made some debian packages of sbcl at
7225 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7226 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7227 stable, but are nonetheless usable. When he's ready, I'd be happy
7228 to add them to the SourceForge "File Releases" section. (And if
7229 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7230 * new fasl file format version number (because of changes in
7231 internal representation of (OR ..) types to accommodate the new
7232 support for (AND ..) types, among other things)
7234 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7235 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7237 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7239 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7240 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7241 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7242 * DESCRIBE now works on structure objects again.
7243 * Most function call argument type mismatches are now handled as
7244 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7245 know whether the function will be redefined before the call is
7246 executed. (The compiler could flag local calls with full WARNINGs,
7247 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7248 it doesn't keep track of enough information to know whether calls
7249 are local in this sense.)
7250 * Compiler output is now more verbose, with messages truncated
7251 later than before. (There should be some supported way for users
7252 to override the default verbosity, but I haven't decided how to
7253 provide it yet, so this behavior is still controlled by the internal
7254 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7255 src/compiler/ir1util.lisp.)
7256 * Fasl file format version numbers have increased again, because
7257 support for the Gray streams extension changes the layout of the
7258 system's STREAM objects.
7259 * The Gray subclassable streams extension now works, thanks to a
7260 patch from Martin Atzmueller.
7261 * The full LOAD-FOREIGN extension (not just the primitive
7262 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7263 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7264 but like most other programs, it defaults to copying the Unix
7265 environment from the original process instead of starting the
7266 new process in an empty environment.
7267 * Extensions which manipulate the Unix environment now support
7268 an :ENVIRONMENT keyword option which doesn't smash case or
7269 do other bad things. The CMU-CL-style :ENV option is retained
7270 for porting convenience.
7271 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7272 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7274 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7276 * A patch from Martin Atzmueller seems to have solved the SIGINT
7277 problem, and as far as we know, signal-handling now works cleanly.
7278 (If you find any new bugs, please report them!)
7279 * The system no longer defaults Lisp source file names to types
7280 ".l", ".cl", or ".lsp", but only to ".lisp".
7281 * The compiler no longer uses special default file extensions for
7282 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7283 seems to expect a single default extension for all compiled code,
7284 and there's no compelling reason to try to stretch the standard
7285 to allow two different extensions.) Instead, byte-compiled files
7286 default to the same extension as native-compiled files.
7287 * Fasl file format version numbers have increased again, because
7288 a rearrangement of internal implementation packages made some
7289 dumped symbols in old fasl files unreadable in new cores.
7290 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7291 many fewer weird special cases.
7292 * Bug #17 (differing COMPILE-FILE behavior between logical and
7293 physical pathnames) has been fixed, and some related misbehavior too,
7294 thanks to a patch from Martin Atzmueller.
7295 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7296 by Tim Moore, ported to SBCL by Martin Atzmueller.
7297 * Martin Atzmueller fixed several filesystem-related problems,
7298 including bug #36, in part by porting CMU CL patches, which were
7299 written in part by Paul Werkowski.
7300 * More compiler warnings in src/runtime/ are gone, thanks to
7301 more patches from Martin Atzmueller.
7302 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7305 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7307 * DESCRIBE now works on CONDITION objects.
7308 * The debugger now handles errors which arise when trying to print
7309 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7311 * The build system now uses an additional file, customize-target-features.lisp,
7312 to allow local modifications to the target *FEATURES* list. (The point of
7313 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7314 debugging features enabled, without having to worry about propagating it
7315 into everyone's system when I do a "cvs update".) When no
7316 customize-target-features.lisp file exists, the target *FEATURES* list
7317 should be constructed the same way as before.
7318 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7319 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7320 warn about behavior which is undefined under the ANSI spec. Note: This
7321 is specified by ANSI, but it's not very popular with programmers.
7322 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7323 macro in the SBCL sources for an example of a workaround which you
7324 might use to make portable ANSI-standard code which does what you want.
7325 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7326 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7327 when it's used as a non-toplevel form. (This is required in order
7328 to implement the DEFCONSTANT-EQX macro.)
7329 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7330 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7331 funny things, due to bugs in the implementation of EVAL-WHEN
7332 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7333 non-toplevel DEFCONSTANTs are uncommon.)
7334 * The core file version number and fasl file version number have been
7335 incremented, because the old noncompliant DEFCONSTANT behavior involved
7336 calling functions which no longer exist, and because I also took the
7337 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7338 * fixed bug 1 (error handling before read-eval-print loop starts), and
7339 redid debugger restarts and related debugger commands somewhat while
7341 ** The QUIT debugger command is gone, since it did something
7342 rather different than the SB-EXT:QUIT command, and since it never
7343 worked properly outside the main toplevel read/eval/print loop.
7344 Invoking the new TOPLEVEL restart provides the same functionality.
7345 ** The GO debugger command is also gone, since you can just invoke
7346 the CONTINUE restart directly instead.
7347 ** The TOP debugger command is also gone, since it's redundant with the
7348 FRAME 0 command, and since it interfered with abbreviations for the
7350 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7352 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7353 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7354 some porting work by Martin Atzmueller)
7355 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7356 with a boatload of patches which he ported to SBCL. Now that those
7358 ** The system tries to make sure that its low-priority messages
7359 are prefixed by semicolons, to help people who like to use
7360 syntax highlighting in their ILISP buffer. (This patch
7361 was originally due to Raymond Toy.)
7362 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7363 patches originally written by Raymond Toy.
7364 ** The compiler understands coercion between single-value and
7365 multiple-VALUES type expressions better, getting rid of some very
7366 weird behavior, thanks to patches originally by Robert MacLachlan
7367 and Douglas Crosher.
7368 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7369 lambda lists, thanks to a patch originally by Pierre Mai.
7370 ** The system no longer bogusly warns about "abbreviated type
7372 ** The compiler gets less confused by inlining and RETURN-FROM,
7373 thanks to some patches originally by Tim Moore.
7374 ** The system no longer hangs when dumping circular lists to fasl
7375 files, thanks to a patch originally from Douglas Crosher.
7376 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7377 undefined function error.
7378 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7379 in structure slot initforms) for now, documented workaround instead:-|
7380 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7381 * fixed bug 5: added stubs for various Gray stream functions called
7382 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7383 installed, at least appropriate type errors are generated
7384 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7385 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7386 consistently in DEFMETHOD forms.
7387 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7388 it doesn't seem to affect SBCL after all
7389 * The C runtime system now builds with better optimization and many
7390 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7392 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7394 * The system is now under CVS at SourceForge (instead of the
7395 CVS repository on my home machine).
7396 * The new signal handling code has been tweaked to treat register
7397 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7398 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7399 downstream, e.g. in debug-int.lisp, has implicit dependencies
7400 on the unsignedness of integer representation of machine words,
7401 and that caused the system to bomb out with infinite regress
7402 when trying to recover from type errors involving signed values,
7403 e.g. (BUTLAST '(1 2 3) -1).)
7404 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7405 (This was one of the bugs Peter Van Eynde reported back in July.)
7406 * The system now uses code inspired by Colin Walters' O(N)
7407 implementation of MAP (from the cmucl-imp@cons.org mailing
7408 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7409 inline the MAP operation, and there is more than one
7410 sequence argument to the MAP call (so that it can't just
7411 do ETYPECASE once and for all based on the type of the
7412 single sequence argument). (The old non-inline implementation
7413 of the general M-argument sequence-of-length-N case required
7414 O(M*N*N) time when any of the sequence arguments were LISTs.)
7415 * The QUIT :UNIX-CODE keyword argument has been renamed to
7416 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7417 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7419 * Raymond Wiker's patches to port dynamic loading from Linux to
7420 FreeBSD have been added.
7421 * The BUGS file is now more nearly up to date, thanks in large part
7422 to Martin Atzmueller's review of it.
7423 * The debugger now flushes standard output streams before it begins
7424 its output ("debugger invoked" and so forth).
7425 * The core version number and fasl file version number have both
7426 been incremented, because of incompatible changes in the layout
7428 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7429 used to not be called for a saved Lisp image.)
7430 * Martin Atzmueller's version of a patch to fix a compiler crash,
7431 as posted on sbcl-devel 13 September 2000, has been installed.
7432 * Instead of installing Martin Atzmueller's patch for the
7433 compiler transform for SUBSEQ, I deleted the compiler transform,
7434 and transforms for some similar consing operations.
7435 * A bug in signal handling which kept TRACE from working on OpenBSD
7437 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7438 away by constant folding
7439 * The system now defines its address space constants in one place
7440 (in the Lisp sources), and propagates them automatically elsewhere
7441 (through GENESIS and the sbcl.h file). Therefore, patching the
7442 address map is less unnecessarily tedious and error-prone. The
7443 Lisp names of address space constants have also been systematized.
7444 * CVS tags like dollar-Header-dollar have been removed from
7445 the sources, because they have never saved me trouble and
7446 they've been source of trouble working with patches and other
7447 diff-related operations.
7448 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7449 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7451 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7453 * The system has been ported to OpenBSD.
7454 * The system now compiles with a simple "sh make.sh" on the systems
7455 that it's supported on. I.e., now you no longer need to tweak
7456 text in the target-features.lisp-expr and symlinks in src/runtime/
7457 by hand, the make.sh takes care of it for you.
7458 * The system is no longer so grossly inefficient when compiling code
7459 involving vectors implemented as general (not simple) vectors (VECTOR T),
7460 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7461 which dares to use the various sequence functions on non-simple
7462 vectors, takes less of a performance hit.
7463 * There is now a primitive type predicate VECTOR-T-P
7464 to test for the (VECTOR T) type, so that e.g.
7465 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7466 can now be compiled with some semblance of efficiency. (The old code
7467 turned the type declaration into a full call to %TYPEP at runtime!)
7468 * AREF on (VECTOR T) is still not fast, since it's still compiled
7469 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7470 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7471 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7472 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7473 without making full calls to SUBTYPEP at runtime.
7474 (Some analogous efficiency issues for non-simple vectors specialized to
7475 element types other than T, or for non-simple multidimensional arrays,
7476 have not been addressed. They could almost certainly be handled the
7477 same way if anyone is motivated to do so.)
7478 * The changes in array handling break binary compatibility, so
7479 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7480 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7481 instead of (VALUES T T).
7482 * By following the instructions that Dan Barlow posted to sbcl-devel
7483 on 2 July 2000, I was able to enable primitive dynamic object
7484 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7485 functionality is not implemented (since it calls ld to resolve
7486 library references automatically, requiring RUN-PROGRAM for its
7487 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7488 try to resolve library references) is now supported.
7489 * The system now flushes the standard output streams when it terminates,
7490 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7491 them at several other probably-convenient times, e.g. in each pass of
7492 the toplevel read-eval-print loop, and after evaluating a form given
7493 as an "--eval" command-line option. (These changes were motivated by a
7494 discussion of stream flushing issues on cmucl-imp in August 2000.)
7495 * The source transform for TYPEP of array types no longer assumes
7496 that an array whose element type is a not-yet-defined type
7497 is implemented as an array of T, but instead punts, so that the
7498 type will be interpreted at runtime.
7499 * There is now some support for cross-compiling in make.sh: each of
7500 the phases of make.sh has its own script. (This should be transparent
7501 to people doing ordinary, non-cross-compile builds.)
7502 * Since my laptop doesn't have hundreds of megabytes of memory like
7503 my desktop machine, I became more motivated to do some items on
7504 my to-do list in order to reduce the size of the system a little:
7505 ** Arrange for various needed-only-at-cold-init things to be
7506 uninterned after cold init. To support this, those things have
7507 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7508 symbols with such names are now uninterned after cold init).
7509 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7510 fasl files for cold load.
7511 ** Remove the old compiler structure pooling code (which used to
7512 be conditional on the target feature :SB-ALLOC) completely.
7513 ** Redo the representation of some data in cold init to be more compact.
7514 (I also looked into supporting byte compiled code at bootstrap time,
7515 which would probably reduce the size of the system a lot, but that
7516 looked too complicated, so I punted for now.)
7517 * The maximum signal nesting depth in the src/runtime/ support code has
7518 been reduced from 4096 to 256. (I don't know any reason for the very
7519 large old value. If the new smaller value turns out to break something,
7520 I'll probably just bump it back up.)
7521 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7523 * Many, many bugs reported by Peter Van Eynde have been added to
7524 the BUGS list; some have even been fixed.
7525 * While enabling dynamic object file loading, I tried to make the
7526 code easier to understand, renaming various functions and variables
7527 with less ambiguous names, and changing some function calling
7528 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7529 * While trying to figure out how to do the OpenBSD port, I tried to
7530 clean up some of the code in src/runtime/. In particular, I dropped
7531 support for non-POSIX signal handling, added various comments,
7532 tweaked the code to reduce the number of compilation warnings, and
7533 renamed some files to increase consistency.
7534 * To support the new automatic configuration functionality in make.sh,
7535 the source file target-features.lisp-expr has been replaced with the
7536 source file base-target-features.lisp-expr and the machine-generated
7537 file local-target-features.lisp-expr.
7538 * fixed a stupid quoting error in make.sh so that using CMU CL
7539 "lisp -batch" as cross-compilation host works again
7541 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7543 * DESCRIBE no longer tries to call itself recursively to describe
7544 bound/fbound values, so that it no longer fails on symbols which are
7545 bound to themselves (like keywords, T, and NIL).
7546 * DESCRIBE now works on generic functions.
7547 * The printer now prints less-screwed-up representations of closures
7548 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7549 * A private symbol is used instead of the :EMPTY keyword previously
7550 used to mark empty slots in hash tables. Thus
7551 (DEFVAR *HT* (MAKE-HASH-TABLE))
7552 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7553 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7554 now does what ANSI says that it should. (You can still get
7555 similar noncompliant behavior if bang on the hash table
7556 implementation with all the symbols you get back from
7557 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7558 This breaks binary compatibility, since tests for equality to
7559 :EMPTY are wired into things like the macroexpansion of
7560 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7562 * There's now a minimal placeholder implementation for CL:STEP,
7563 as required by ANSI.
7564 * An obscure bug in the interaction of the normal compiler, the byte
7565 compiler, inlining, and structure predicates has been patched
7566 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7567 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7569 * Missing ordinary arguments in a macro call are now detected even
7570 when the macro lambda list contains &KEY or &REST.
7571 * The debugger no longer complains about encountering the top of the
7572 stack when you type "FRAME 0" to explicitly instruct it to go to
7573 the top of the stack. And it now prints the frame you request even
7574 if it's the current frame (instead of saying "You are here.").
7575 * As specified by ANSI, the system now always prints keywords
7576 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7578 * The default initial SIZE of HASH-TABLEs is now smaller.
7579 * Type information from CLOS class dispatch is now propagated
7580 into DEFMETHOD bodies, so that e.g.
7581 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7583 is now basically equivalent to
7584 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7585 (DECLARE (TYPE SINGLE-FLOAT X))
7587 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7588 operation, without having to do run-time type dispatch.
7589 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7590 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7591 * Since I don't seem to be making big file reorganizations very often
7592 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7593 is overflowing my ability to conveniently back them up), I've finally
7594 checked the system into CVS. (The CVS repository is on my home system,
7595 not at SourceForge -- putting it on SourceForge might come later.)
7596 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7597 high-level GC-NOTIFY-FOO functions send their output. (There's
7598 still very little control of where low-level verbose GC functions
7599 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7600 less than it used to -- the GC-NOTIFY-FOO functions are now under
7601 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7602 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7603 in only one place in the source code, and propagates it automatically
7604 everywhere that it's needed. Thus e.g. when I bump the version from
7605 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7606 * The C source files now include boilerplate legalese and documentation
7607 at the head of each file (just as the Lisp source files already did).
7608 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7609 to his page will be replaced with a link to his new CLiki service.
7611 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7613 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7614 * The build process now looks for GNU make under the default name "gmake",
7615 instead of "make" as it used to. If GNU make is not available as "gmake"
7616 on your system, you can change this default behavior by setting the
7617 GNUMAKE environment variable.
7618 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7619 can build without error under CMU CL.
7621 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7623 * There is now a partial SBCL user manual (with some new text and some
7624 text cribbed from the CMU CL manual).
7625 * The beginnings of a profiler have been added (starting with the
7626 CMU CL profiler and simplifying and cleaning up). Eventually the
7627 main interface should be through the TRACE macro, but for now,
7628 it's still accessed through vaguely CMU-CL-style functions and macros
7629 exported from the package SB-PROFILE.
7630 * Some problems left over from porting CMU CL to the new
7631 cross-compilation bootstrap process have been cleaned up:
7632 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7633 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7634 part when getting rid of the compiler *BACKEND* stuff.)
7635 ** The value of *NULL-TYPE* was screwed up, because it was
7636 being initialized before the type system knew the final
7637 definition of the 'NULL type. This screwed up several key
7638 optimizations in the compiler, causing inefficiency in all sorts
7639 of places. (I found it because I wanted to understand why
7640 GET-INTERNAL-RUN-TIME was consing.)
7641 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7642 PROCLAIM FTYPE information. Unfortunately this broke binary
7643 compatibility again, since now the forms output by DEFGENERIC
7644 to refer to functions which didn't exist in 0.6.3.
7645 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7646 can use the new (as of 0.6.3) transform for SOME into MAP into
7648 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7649 values to (INTEGER 0 1000000), so that the time code will no longer
7650 occasionally get blown up by Linux returning 1000000 microseconds
7651 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7652 its output conform to the ANSI spec. (Alas, this makes its output
7653 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7654 * A full call to MAP NIL with a single sequence argument no longer conses.
7655 * fixes to problems pointed out by Martin Atzmueller:
7656 * The manual page no longer talks about multiprocessing as though
7657 it were currently supported.
7658 * The ILISP support patches have been removed from the distribution,
7659 because as of version 5.10.1, ILISP now supports SBCL without us
7660 having to maintain patches.
7661 * added a modified version of Raymond Toy's recent CMU CL patch for
7662 EQUALP comparison of HASH-TABLE
7664 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7666 * The system still can't cross-compile itself with
7667 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7668 entails), but at least it can compile more of itself that way
7669 than it used to be able to, and various buglets which were uncovered
7670 by trying to cross-compile itself that way have now been fixed.
7671 * This release breaks binary compatibility again. This time
7672 at least I've incremented the FASL file format version to 2, so that the
7673 problem can be detected reliably instead of just causing weird errors.
7674 * various new style warnings:
7675 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7676 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7677 ** using the lexical binding of a variable named in the *FOO* style
7678 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7679 as specified by ANSI.
7680 * *RANDOM-STATE* is no longer automatically initialized from
7681 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7682 default behavior of the system is to repeat its behavior every time
7683 it's run. If you'd like to change this behavior, you can always
7684 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7685 old convention there was no comparably easy way to get the system to
7686 repeat its behavior every time it was run.
7687 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7688 FTYPE declarations has been removed, in favor of their ANSI
7689 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7690 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7691 the types of their sequence arguments can be determined at compile time.
7692 This is done through a new open code expansion for MAP which eliminates
7693 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7694 argument types can be determined at compile time.
7695 * The optimizer now transforms COERCE into an identity operation when it
7696 can prove that the coerced object is already of the correct type. (This
7697 can be a win for machine generated code, including the output of other
7698 optimization transforms, such as the MAP transform above.)
7699 * Credit information has been moved from source file headers into CREDITS.
7700 * Source file headers have been made more standard.
7701 * The CASE macro now compiles without complaining even when it has
7704 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7706 * (Note that the way that the PCL macroexpansions were rewritten
7707 to accommodate the change in DEFGENERIC below breaks binary
7708 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7709 not run under sbcl-0.6.2. Once we get out of alpha releases,
7710 i.e. hit release 1.0.0, we'll probably try to maintain binary
7711 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7712 and sbcl-1.4.4. Until then, however, it might be fairly common
7713 for maintenance releases to break binary compatibility.)
7714 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7716 * The reporting of unhandled signals has been changed to print some
7717 explanatory text as well as the report form. (Previously only
7718 the report form was printed.)
7719 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7720 it defines, so that the compiler no longer issues undefined function
7721 warnings for compiled-but-not-yet-loaded generic functions.
7722 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7723 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7724 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7725 section of the ANSI spec are supported.
7726 * The "" nickname for the "KEYWORD" package has been removed.
7727 The reader still handles symbol tokens which begin with a package marker
7728 as keywords, but it doesn't expose its mechanism for doing so in the
7729 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7730 * The system now issues STYLE-WARNINGs for contradictory TYPE
7731 proclamations. (Warnings for contradictory FTYPE proclamations would
7732 be nice too, but those can't be done usefully unless the type system
7733 is made smarter about FUNCTION types.)
7734 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7735 systematized, so that "*target-*.lisp is supposed to exist only on the
7736 target and imply that there's a related file which exists on the
7737 host, and *host-*.lisp is supposed to exist only on the host and imply
7738 that there's a related file which exists on the target. This involves a
7739 lot of renaming. Hopefully the acute confusion caused by the renaming
7740 will be justified by the reduction in chronic confusion..
7741 ** runtime-type.lisp -> early-target-type.lisp
7742 ** target-type.lisp -> late-target-type.lisp
7743 ** early-host-format.lisp -> early-format.lisp
7744 ** late-host-format.lisp -> late-format.lisp
7745 ** host-error.lisp -> misc-error.lisp
7746 ** early-error.lisp -> early-target-error.lisp
7747 ** late-error.lisp -> late-target-error.lisp
7748 ** host-defboot.lisp -> early-defboot.lisp
7749 ** code/misc.lisp -> code/target-misc.lisp
7750 ** code/host-misc.lisp -> code/misc.lisp
7751 ** code/numbers.lisp -> code/target-numbers.lisp
7752 ** code/early-numbers.lisp -> numbers.lisp
7753 ** early-host-type.lisp -> early-type.lisp
7754 ** late-host-type.lisp -> late-type.lisp
7755 ** host-typep.lisp -> typep.lisp
7756 ** load.lisp -> target-load.lisp
7757 ** host-load.lisp -> load.lisp
7758 ** host-disassem.lisp -> disassem.lisp
7759 ** host-insts.lisp -> insts.lisp
7760 ** byte-comp.lisp -> target-byte-comp.lisp
7761 ** host-byte-comp.lisp -> byte-comp.lisp
7762 ** host-signal.lisp -> signal.lisp
7763 ** host-defstruct.lisp -> defstruct.lisp
7764 ** late-target-type.lisp -> deftypes-for-target.lisp
7765 Furthermore, several other previously target-only files foo.lisp (e.g.
7766 hash-table.lisp and random.lisp) have been split into a target-and-host
7767 foo.lisp file and a target-only target-foo.lisp file, with their key type
7768 definitions in the target-and-host part, so that the cross-compiler will
7769 know more about target types.
7770 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7771 gone away. In their place are various *BACKEND-FOO* variables
7772 corresponding to the slots of the old structure.
7773 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7774 into the target SBCL has been fixed.
7775 * The chill.lisp system for loading cold code into a running SBCL
7777 * Support for the CMU CL "scavenger hook" extension has been removed.
7778 (It was undocumented and unused in the CMU CL sources that SBCL was
7779 derived from, and stale in sbcl-0.6.1.)
7780 * Various errors in the cross-compiler type system were detected
7781 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7782 (enabling various consistency checks). Many of them were fixed,
7783 but some hard problems remain, so the compiler is back to
7784 running without *TYPE-SYSTEM-INITIALIZED* for now.
7785 * As part of the cross-compiler type system cleanup, I implemented
7786 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7787 * I have started adding UNCROSS calls throughout the type system
7788 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7789 on cross-compiler input files will be able to go away, and various
7791 * CONSTANTP now returns true for quoted forms (as explicitly required
7794 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7796 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7797 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7798 (MAKE-LIST -1). In the longer term, it ought to become true
7799 that declarations are assertions even at SAFETY 1. For now, it's not
7800 quite true even at SAFETY 3, but it's at least more nearly true..
7801 (Note that this change seems to increases the size of the system by
7802 O(5%) and to decrease the speed of the compiler by 20% or more.)
7803 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7804 for the problem of printing dozens of lines of distracting information
7805 about low-level system machinery as part of the top stack frame
7806 on entry to the debugger when an undefined function was called.
7807 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7808 is not reset to COMMON-LISP-USER.
7809 * Compilation of stuff related to dyncount.lisp has been made conditional
7810 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7811 smaller. The various dyncount-related symbols have been moved into
7812 a new "SB-DYNCOUNT" package.
7813 * tty-inspect.lisp has been renamed to inspect.lisp.
7814 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7815 feature has gone away. (When we eventually port to other flavors of
7816 libc and/or Unix, we'll try to make the differences between flavors
7817 invisible at the user level.)
7818 * Various other *FEATURES* tags, and/or their associated conditionals,
7819 have been removed if obsolescent, or given better documentation, or
7820 sometimes given more-mnemonic names.
7822 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7824 * tidied up "make.sh" script
7825 * tidied up system directory structure
7826 * better "clean.sh" behavior
7827 * added doc/FOR-CMUCL-DEVELOPERS
7828 * many many small tweaks to output format, e.g. removing possibly-confusing
7829 trailing #\. character in DESCRIBE-INSTANCE
7830 * (EQUALP #\A 'A) no longer signals an error.
7831 * new hashing code, including EQUALP hashing
7832 * tidied up Lisp initialization and toplevel
7833 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7834 * command line argument processing
7835 * added POSIX-GETENV function to deal with Unix-ish environment variables
7836 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7837 terminating SBCL on EOF
7838 * non-verbose GC by default
7839 * There is no more "sbcl" shell script; the sbcl file is now the C
7840 runtime executable (just like CMU CL).
7841 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7843 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7844 symbol and package information as Lisp native symbol and package objects
7845 instead of strings naming symbols and strings naming packages. This way,
7846 whenever packages are renamed (as in warm init), debug information is
7847 transformed along with everything else.
7848 * tweaked the optimization policy declarations which control the building
7849 of SBCL itself. Now, among other things, the system no longer saves
7850 source location debugging information. (This helps two problems at once
7851 by reducing SBCL size and by keeping SBCL from trying to look for its
7852 sources -- which may not exist -- when reporting errors.)
7853 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7854 debugging and testing purposes
7855 * cleaned up printing, making the printer call PRINT-OBJECT for
7856 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7857 methods, giving nearly-ANSI behavior
7858 * converted almost all special variables to use *FOO* naming convention
7859 * deleted PARSE-TIME functionality, since it can be done portably
7860 * moved some files out of cold init into warm init
7861 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7863 * regularized formatting of source files
7864 * added an install.sh script
7865 * fixed ridiculous memory usage of cross-compiler by making
7866 compiler/alloc.lisp not try to do pooling unless it can hook
7867 itself into the GC of the cross-compilation host. Now the system
7868 builds nicely on my old laptop.
7869 * added :SB-ALLOC in target-features.lisp-expr
7870 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7871 was not implemented)
7872 * re-did condition handling and note reporting in the compiler. Notes
7873 are no longer handled by signalling conditions. Style warnings
7874 and warnings are handled more correctly and reported in such a way
7875 that it's easy to find one or the other in your output (so that you
7876 can e.g. figure out which of many problems caused COMPILE-FILE to
7878 * changed the severity of several compiler warnings from full WARNING
7879 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7880 compiler note reporting so that it doesn't use the condition system
7881 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7882 COMPILE-FILE command)
7883 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7884 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7885 no longer supported, since their implementation was deeply intertwingled
7886 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7887 * removed bogus "support" for compiler macros named (SETF FOO), and
7888 removed the compiler macro for SETF INFO (but only after making a fool
7889 of myself on the cmucl-imp mailing list by posting a bogus patch for
7890 DEFINE-COMPILER-MACRO..)
7891 * Compiled files containing forms which have side effects on the Lisp
7892 reader (such as DEFPACKAGE forms) are now handled more correctly.
7893 (Compiler queuing of top level lambdas has been suppressed by setting
7894 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7895 * deleted various currently-unused source files, e.g. gengc.lisp. They
7896 may be added back at some point e.g. when porting to other architectures,
7897 but until they are it's distracting to distribute them and to try to
7899 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7900 there were so many of them they're just distractions, and UNCROSS is
7901 known to be able to handle the current sources
7902 * moved PROFILE functionality into TRACE, so that it will be clear
7903 how the wrapping and unwrapping of functions when you profile them
7904 interacts with the wrapping and unwrapping of functions when you
7905 trace them. (Actually, the functionality isn't there yet, but at least
7906 the interface specification is there. Hopefully, the functionality will
7907 arrive with some future maintenance release.)
7908 * removed host-oops.lisp
7909 * changed signature of QUIT function to allow UNIX-CODE argument
7910 * fixed READ-SEQUENCE bug
7911 * tweaked verbose GC output so that it looks more like the progress
7912 output that ANSI specifies for functions like LOAD
7913 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7914 * added <http://sbcl.sourceforge.com> to the banner information printed by