1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
3 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
4 select() if the OS has the former. Previously poll() was used
5 only if waiting on exactly one file descriptor.
6 * enhancement: efficiency of access to untagged structure slots is improved
7 on x86-64, and the order of slots in memory is exactly as specified by
8 defstruct, simplifying use of structures as arguments to foreign calls.
9 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
11 * bug fix: GC memory corruption during internal memory handling.
12 * bug fix: duplicate effective-slot-definition objects as compared
13 by EQ on name could be present in CLASS-SLOTS of a class whose
14 metaclass was structure-class or condition-class. (lp#1049423)
15 * bug fix: HANDLER-BIND with empty bindings works again; regression in
17 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
19 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
20 (member #\a #\c). (lp#1392068)
21 * bug fix: READ sometimes accidentally preserved a whitespace character
22 after a token when it should not have. (lp#327790)
24 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
25 * enhancement: sb-bsd-sockets now has basic support for IPv6
26 * enhancement: An sb-unicode package has been added, containing
27 many functions related to handling Unicode text
28 * enhancement: The reader now normalizes symbols to Normalization
29 Form KC (NFKC). This behavior can be disabled with
30 SB-EXT:READTABLE-NORMALIZATION
31 * enhancement: a style-warning is signaled if OPTIMIZE declarations
32 multiply specify a quality with differing values. (lp#310267)
33 * bug fix: conservatively pointed to pages wipe out unused dwords so
34 that they cannot act as false roots in turn.
35 * bug fix: the walker's handling of lexical variable and symbol-macro
36 bindings is improved (lp#375326, lp#1368305)
37 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
38 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
39 * bug fix: in interpreted code, inequality predicates did not type-check
40 arguments that weren't examined, and a 1-argument use of MIN or MAX
41 accepted a complex number. (lp#1373702)
42 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
43 (lp#1364413, thanks to Zach Beane)
45 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
46 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
47 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
48 SEQUENCE:MERGE respectively when the specified result type designates an
50 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
52 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
53 universal superclass (lp#1332983)
54 * bug fix: reading an uninterned symbol whose print name has the
55 syntax of an integer signals an error. (lp#310062)
56 * bug fix: the walker is less likely to be confused when walking LET* forms
57 with special bindings and use of those bindings and others of the same
59 * bug fix: a rare bug affecting 32-bit platforms resulting in a
60 fatal condition with the message "Globaldb rehash failure" has been fixed.
62 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
63 * enhancement: DOCUMENTATION works on instances of
64 FUNCALLABLE-STANDARD-CLASS
65 * enhancement: ASSERT reports arguments of calls to lexical functions in
66 additional to global functions.
67 * enhancement: ASDF updated to 3.1.3
68 * enhancement: UIOP can be loaded without ASDF.
69 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
70 before accessing its class-precedence list.
71 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
73 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
74 class is a FORWARD-REFERENCED-CLASS.
75 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
76 which initargs have been supplied.
77 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
79 * bug fix: macroexpanding a backquoted expression involving ",."
80 outside of the compiler failed. (lp#1354623)
82 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
83 * incompatible change: the #\` ("backquote") reader macro was reimplemented
84 to support robust pretty-printing. Reading a form involving #\` produces
85 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
86 that are not lists. Code that unportably attempts operations on
87 un-evaluated forms resulting therefrom, e.g.
88 (SUBST a b (read-from-string "`(x (,y))"))
89 might generate incorrect results and/or errors.
90 * enhancement: support for GNU/kFreeBSD x86.
91 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
92 and DEFGLOBAL variables of type fixnum.
93 * enhancement: arithmetic constant reduction is now performed on defconstant
94 constants too. (lp#1337069).
95 * bug fix: certain ftype proclamations containing &optional t &rest t no
96 longer cause subsequent definitions to signal bogus style-warnings.
97 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
98 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
101 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
102 * enhancement: GENCGC is enabled on ARM.
103 * enhancement: better error reporting for invalid calls to local functions.
104 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
106 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
108 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
110 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
112 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
113 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
114 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
116 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
117 lp#700538, lp#613876, lp#695286, lp#798388)
118 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
119 * bug fix: array type intersection handles T and unknown element types
120 correctly. (lp#1258716)
121 * bug fix: fix a corner case in array type unparsing that would result in
122 misleading translations from our internal type representation.
123 * bug fix: array-rank now sees through union and intersection types.
125 * bug fix: when DECLARE expressions are in the wrong place, be careful not
126 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
128 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
129 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
130 instead of signaling an error. (lp#1095483)
131 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
132 used to (rarely) introduce duplicate conflict markers in a single
133 TN/block pair. (lp#1327008)
135 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
136 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
137 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
138 report of the signaled conditions lists currently running threads.
139 * enhancement: ported to ARM linux.
140 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
141 * enhancement: new contrib sb-mpfr by Stephan Frank.
142 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
143 (lp#1315846, thanks to Mark Cox)
144 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
145 function-designator to a function only as needed. (lp#1012335)
146 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
147 thanks to Thomas Hlavaty)
148 * bug fix: handle --without-xxx options to make.sh more carefully.
149 (lp#1246665, thanks to Richard M Kreuter)
150 * bug fix: prevent maybe-delete-exit from doing semantically broken things
151 with local exits. (lp#309099, lp#518099, lp#533930)
152 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
155 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
156 * optimization: COERCE is now more effecient for more cases when the type is
157 known at compile-time.
159 * bug fix: correctly inherit condition initforms. (lp#1300904)
160 * bug fix: properly pprint literal functions inside nested lists.
162 * bug fix: more-correctly handle array-type unity (broken for ages, causing
163 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
164 reported by jasom in #lisp).
166 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
167 * enhancement: printing backtraces respects
168 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
170 * optimization: defstruct out-of-line accessor are now as fast as inlined.
172 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
173 instances with a test-function (reported by Vivitron in #sbcl)
174 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
175 * bug fix: Change COND error message (lp#1254511)
176 * bug fix: LOAD is no longer confused when called on a directory.
178 * bug fix: MAKE-CONDITION reports names of missing condition classes
179 properly (lp#1199223)
180 * bug fix: restore building with clang. (lp#1293643)
181 * bug fix: restore building on SPARC (broken since 1.1.15).
182 * bug fix: improved FreeBSD support.
183 * bug fix: PPC floating point conversion corrupted stack.
185 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
186 * minor incompatible change: improve read/print consistency for pathnames on
187 Win32, by using the circumflex character #\^ as the escape character.
189 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
190 * enhancement: Loading fasls with symbols from an undefined package includes
191 the name of the symbol in the error message.
192 * bug fix: problems when redefining classes and doing TYPEP on classes
193 concurrently. (lp#1272742)
194 * bug fixes to the x86-64 XCHG instruction:
195 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
197 ** it was misencoded when used to exchange EAX with itself.
198 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
199 32- and 16-bit variations as NOP.
200 * bug fix: the disassembler outputs source annotations in the right place
201 and no longer randomly drops some of them. (lp#1249205)
202 * bug fix: fix commutative-arg-swap from introducing undumpable structures
203 into code, prevent code with errors from being compiled. (lp#1276282)
204 * bug fix: pathnames with :back in their directory component are succeffully
206 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
207 wrap functions around. (lp#309086)
209 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
210 * new feature: the iterative spilling/coloring register allocator developed
211 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
212 in. By default, it only activates for functions that optimize with
213 (speed 3) and (> speed compilation-speed), but setting
214 sb-regalloc:*register-allocation-method* to :iterative forces its
215 execution. The previous behaviour can be obtained by instead setting that
216 variable to :greedy. Thanks again to Google for their support, and, more
217 crucially, to Alexandra Barchunova for her hard work.
218 * optimization: make-array with known element-type and unknown dimensions is
220 * optimization: make-array with unknown element-type is faster as well.
222 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
223 :application-type argument, which can be :console or :gui. :gui allows
224 having GUI applications without an automatically appearing console window.
225 * enhancement: reduced conservativism on GENCGC platforms:
226 conservative roots must be valid-looking tagged pointers or point
227 within a code object, not merely point to within the allocated part
228 of a page, in order to pin a page.
229 * enhancement: support for "Mac Roman" external format.
230 * enhancement: encapsulation of named generic functions now happens without
231 altering the identity of the function bound to the name.
232 * bug fix: Windows applications without the console window no longer misbehave.
233 (patch by Wilfredo Velazquez, lp#1256034).
234 * bug fix: modular arithmetic optimizations do not stumble on dead branches
235 with bad constants. (reported by Douglas Katzman)
236 * bug fix: CLISP can be used again as a cross-compilation host.
237 (Thanks to Vasily Postnicov, lp#1261451)
238 * bug fix: run-program crashed with :directory nil. (lp#1265077)
240 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
241 * optimization: complicated TYPEP tests are less opaque to the type
242 propagation pass. (lp#1229340)
243 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
244 * optimization: EQUALP on structures with raw slots (double-float/complex)
245 no longer conses and is faster.
246 * optimization: RESTART-CASE expands to more compact code.
247 Thanks to Jan Moringen. (lp#1249055)
248 * enhancement: Top-level defmethod without defgeneric no longer causes
249 undefined-function warnings in subsequent forms. (lp#503095)
250 * enhancement: Better error messages for system errors on Windows.
251 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
252 Cushing. (lp#1249183)
253 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
254 specification (multiple integer arguments) and signals a continuable error
255 if the current SBCL version is lower (older) than the specification.
257 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
258 * bug fix: EQUALP now compares correctly structures with raw slots larger
260 * bug fix: contribs couldn't be built on Windows with MinGW.
261 * bug fix: Better pathname handling on Windows. (lp#922117)
262 * bug fix: OPEN reports a more meaningful error when an existing file is
263 opened for output with :if-exists :new-version. Thanks to Philip
264 Munksgaard. (lp#455381)
265 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
266 CLOS-related errors. (lp#633911)
267 * bug fix: GC deadlocks caused by concurrent consing on Windows.
269 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
270 * optimization: better distribution of SXHASH over small conses of related
272 * other improvements to SXHASH:
273 ** use the whole of the positive-fixnum range for SXHASH of fixnums
274 * enhancement: The error message when calling an undefined alien function
275 includes the name of the function on x86-64.
276 * enhancement: sb-ext:run-program now supports :environment on Windows.
277 * enhancement: ASDF is no longer required to load contribs at runtime.
279 * enhancement: when called with a symbol, FIND-RESTART no longer calls
280 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
281 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
282 clusters better in some cases
283 * enhancement: SOME/ANY/other quantification higher-order functions no
284 longer cons. (lp#1070635)
285 * bug fix: forward references to classes in fasls can now be loaded.
287 * bug fix: don't warn on a interpreted->compiled function redefinition
288 from the same location. (patch by Douglas Katzman, lp#1042405)
289 * bug fix: Create vectors of proper internal length when reading literal
290 vectors from FASLs. (Reported by Jan Moringen)
291 * bug fix: COMPILE can now successfully compile setf functions.
292 (Reported by Douglas Katzman)
293 * bug fix: run-program performs more correct escaping of arguments on
294 Windows. (lp#1239242)
295 * bug fix: function-lambda-expression on generic functions returns the
297 * bug fix: (the [type] [constant]) now warns when [constant] matches
298 [type] except for the number of values. (Reported by Nathan Trapuzzano
300 * bug fix: signal errors in required cases of slot-definition initialization
301 protocol. (lp#309072)
302 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
303 (thanks to Stelian Ionescu, lp#1242643)
304 * bug fix: when given a restart object, FIND-RESTART checks whether the
305 restart is active and, when a condition is supplied, whether the restart
306 is associated to a different condition (lp#774410)
308 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
309 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
310 shutdown(3). (thanks to Jan Moringen, lp#1207483)
311 * enhancement: document extensible sequences. (thanks to Jan Moringen,
313 * optimization: EQUAL and EQUALP transforms are smarter.
314 (thanks to Elias Martenson, lp#1220084)
315 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
316 * bug fix: probe-file now can access symlinks to pipes and sockets in
317 /proc/pid/fd on Linux. (reported by Eric Schulte)
318 * bug fix: SBCL can now be built on Solaris x86-64.
319 * bug fix: Floating point exceptions do not persist on Solaris anymore.
320 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
321 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
323 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
324 (thanks to Stephan Frank)
325 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
326 (thanks to Stephan Frank, lp#1206191)
327 * bug fix: sb-safepoint can now reliably handle signal interruptions of
328 foreign code. (lp#1133018)
329 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
330 constructors no longer fails to merge actual and default initargs
331 (thanks to Jan Moringen, lp#1179858)
332 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
333 constructors handles non-KEYWORD initialization arguments more correctly.
334 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
335 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
336 * bug fix: class definitions with CPLs inconsistent with their metaclasses
337 are less likely to destroy the object system's integrity. (lp#309076)
338 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
339 standard. (lp#1203585, thanks to Jan Moringen)
340 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
341 settings. (lp#1023721)
342 * bug fix: getting the order of arguments to
343 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
344 rather than a failed AVER. (reported by Paul Nathan)
345 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
346 arguments during copying on x86 and x86-64; it may still happen on other
347 platforms when there are more fixed arguments than stack slots.
348 (reported by Jan Moringen)
350 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
351 * enhancement: support building the manual under texinfo version 5.
353 * enhancement: Windows builds no longer display the "Kitten of Death" message.
354 A warning is instead appended to the regular banner, and may be muted with
355 --noinform. (lp#728247)
356 * enhancement: support building under new linker handling of syscalls under
357 NetBSD. (thanks to Robert Swindells)
358 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
359 (regression since 1.1.9)
360 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
361 compiler macro. (thanks to Douglas Katzman).
362 * bug fix: signal a warning when defining a setf-function when a
363 setf-expander is already present. (thanks to Douglas Katzman).
364 * bug fix: improved threading on PPC.
365 * bug fix: ROOM works again on Windows. (lp#1206456)
366 * bug fix: Streams were flushed even when there was one byte still left in
367 the buffer. (lp#910213)
368 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
369 either NIL or :ERROR. (reported by Jan Moringen)
371 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
372 * enhancement: ASDF has been updated to 3.0.2.
373 * optimization: stack frames are packed more efficiently on x86oids, which
374 ought to reduce the frequency of Methuselahn conservative references (it
375 certainly helps with gc.impure.lisp / BUG-936304 on x86).
376 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
377 recognized in modular arithmetic contexts, and compile to native negate,
378 rather than going through bignums only to keep the low bits.
379 * bug fix: Compiling potential modularic arithmetic forms does not cause type
380 errors when some integer types lack lower or upper bounds. (lp#1199127)
381 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
382 bitwidth before being used in a non-modular context. (lp#1199428)
383 * bug fix: Multiple catch/unwind blocks in a single function are now
384 allocated in the right stack order on win32. (lp#1072739)
386 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
387 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
388 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
389 * enhancement: disassemble now annotates some previously missing static
390 functions, like LENGTH.
391 * enhancement: clean.sh now also cleans doc/internals.
392 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
393 print a symbol with a package prefix.
394 * enhancement: The debugger and backtracing are more robust against buggy
395 PRINT-OBJECT methods.
396 * optimization: calls to static functions on x86-64 use less instructions.
397 * optimization: compute encode-universal-time at compile time when possible.
398 * optimization: when referencing internal functions as #'x, don't go through
399 an indirect fdefn structure.
400 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
401 * optimization: (mod fixnum) type-checks are performed using one unsigned
402 comparison, instead of two.
403 * optimization: enable more modular arithmetic transforms in the presence of
405 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
406 when the result is known to be negative.
407 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
408 * optimization: comparisons between rationals and constant floats or between
409 integers and constant ratios are now converted to rationals/integers at
411 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
412 * bug fix: problems with NCONC type derivation (reported by Jerry James).
413 * bug fix: EXPT type derivation no longer constructs bogus floating-point
414 types. (reported by Vsevolod Dyomkin)
415 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
416 addrinfo. (lp#1187041, patch by Jerry James)
417 * bug fix: uninitialized type-error conditions can now be printed.
419 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
420 listening, allowing several tests to run in parallel.
421 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
422 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
424 * bug fix: Specialised SIMD-PACK types can be negated.
425 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
426 reported by Eric Marsden)
427 * bug fix: FP return values from foreign calls are always rounded to single
428 or double float precision on x87.
429 * bug fix: Known-safe vector access on x86oids should not fail spuriously
430 when the index is of the form (+ x constant-positive-integer).
431 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
432 * bug fix: backtrace printer no longer tries to create very large lists when
433 the arg-count register is clobberred by other code. (lp#1192929)
434 * bug fix: x86 should never signal an FP exception while boxing an FP value,
435 a situation that lands us into ldb.
437 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
438 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
439 ROOM, plus a few SB-INTROSPECT functions) has been completely
440 rewritten; it may now exhibit different bugs than before.
441 * new feature: minimal runtime/compiler intrastructure support for SSE
442 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
443 feature :sb-simd-pack. This should enable intrinsics extensions as
444 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
445 for maintaining a branch for so long.
446 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
447 the working directory of the spawned process.
448 (lp#791800) (patch by Matthias Benkard)
449 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
450 stack-allocated on PPC.
451 * enhancement: "fixed objects" can now be stack-allocated on PPC.
452 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
453 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
454 also returns VOPs which do not translate any functions, and finds
455 defoptimizer types ir2convert and stack-allocate-result.
456 * enhancement: better type derivation for APPEND, NCONC, LIST.
458 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
459 heap in a manner similar to the GC rather than its previous ad-hoc
460 scheme, and is therefore no less and possibly more accurate.
461 * fixes and enhancements related to Unicode:
462 ** the character database information has been updated to Unicode 6.2;
463 ** support for canonical and compatibility decomposition of characters has
464 been added, along with support for primary composition;
465 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
466 NFKD) has been included;
467 ** querying the character database for code points not defined by Unicode
468 gives less wrong answers (lp#1178038, reported by Ken Harris)
469 * enhancement: print intermediate evaluation results for some ASSERTed
470 expressions. (lp#789497) (patch by Alexandra Barchunova)
471 * enhancement: x86-64 disassemblies are annotated with unboxed constant
472 values when there are references to (RIP-relative) unboxed constants.
473 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
474 of quadratically with the size of the input in the worst case.
476 * bug fix: handle errors when initializing *default-pathname-defaults*,
477 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
478 decoding errors, or directories being deleted.
479 * bug fix: Loading a core with a discontiguous dynamic space now correctly
480 computes the amount of dynamic space used.
481 * bug fix: disassembler missing ",8" on SHLD
482 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
483 that provide an "invalid" stack frame link for the signal handler
484 itself now use the saved-fp-and-pc mechanism to pick up from the stack
485 frame in the interrupt (signal) context. This is known to affect
486 threaded FreeBSD/x86-64.
487 * bug fix: some LOOP statements couldn't be compiled.
489 * bug fix: sb-sequence:dosequence works on literal vectors.
490 * bug fix: errors in generic arithmetic show the assembly routine's
491 caller on x86 and x86-64. (lp#800343)
492 * bug fix: Compile-time type errors should never result in COMPILE-FILE
494 * bug fix: Known bad local calls do not cause strange failures when
495 emitting or dumping code. (lp#504121)
496 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
497 codegen errors: type checks are inserted as necessary. (lp#1177703)
498 * bug fix: Unsigned modular arithmetic is correctly converted into signed
499 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
500 * bug fix: a combination of inlined local function with &optional and
501 recursion no longer causes undescriptive compiler errors. (lp#1180992)
502 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
503 when testing for non-zero-ness.
504 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
506 * bug fix: Type mismatch for the value of conditional expressions are
507 correctly reported when detected at compile-time, instead of complaining
508 about a constant NIL (similar for non-EQ-comparable catch tags).
509 * bug fix: Referring to INLINE global functions as values should not result
510 in a compilation failure. (lp#1035721)
511 * optimization: faster ISQRT on fixnums and small bignums
512 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
513 * optimization: On x86-64, the number of multi-byte NOP instructions used
514 for code alignment is now always minimal.
515 * optimization: On 64-bit targets, the compiler generates much faster
516 code for type checks for types known at compile time that are smaller
517 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
518 their COMPLEX variants.
519 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
520 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
521 * optimization: ROOM no longer conses so egregiously on non-x86oid
523 * optimization: associative bitwise operations reassociate patterns like
524 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
526 * optimization: quasiquote expressions now perform more constant folding,
527 instead of consing equal lists at runtime. (lp#1026439)
528 * optimization: local call analysis of inlined higher-order function
529 should converge more quickly, resulting in better code for complex
531 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
532 integer constants are handled more cleverly, especially when they
533 can be represented as sign-extended (signed-byte 32). (Based on a
534 patch by Douglas Katzman)
535 * optimization: IF/IF conversion should reliably result in sane code
536 when (some of) the results of the inner IF are always false or
538 * optimization: On x86oids, variable right shifts of machine words are
539 compiled into straight SAR/SHR, instead of going through the generic
542 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
543 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
545 * bug fix: :allocation slot option works for condition slots
547 * bug fix: redefining conditions does not lead to multiple evaluations of
548 hairy slot initfunctions anymore (lp#1164969)
549 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
551 * bug fix: function constants now work as initforms and default initarg
552 values of conditions (lp#539517)
553 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
554 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
555 * bug fix: no more bogus ## references when pretty printing backquoted
556 forms with non-trivial structure sharing. (lp#1161218)
557 * bug fix: Don't signal an error on (setf (documentation nil 'function)
558 "doc"). Signal a style-warning instead when trying to set documentation
559 of NIL for all other documentation types. (Reported by Zach
560 Beane; regression since 2e52fa05.)
561 * bug fix: modular arithmetic involving large constants and conditionals
562 should no longer result in spurious dead code elimination. (Reported by
564 * bug fix: our mach exception handler can seemingly called very early in
565 the program execution process on OS X 10.8.0. Try and handle that case
566 robustly, without potentially leaking mach ports too much.
567 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
569 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
570 * enhancement: the continuable error when defknown-ing over extant
571 fndb entries can be ignored by passing :overwrite-fndb-silently t
572 as a keyword argument to sb-c:defknown (after attributes). Useful
573 to allow defknown to be re-loaded. Use with :allow-other-keys t
574 for backward compatibility.
575 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
577 * bug fix: Prevent a make-array transform from modifying source forms
578 causing problems for inlined code. Thanks to Bart Botta.
579 (regression since 1.0.42.11-bis)
580 * bug fix: clear-output calls the correct gray stream routine,
581 sb-gray:stream-clear-output. (lp#1153257)
582 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
584 * bug fix: Better error messages for package operations (lp#1154776)
585 * bug fix: delete-package on a nonexistent package should signal a cerror.
586 (regression since 1.0.37.44).
587 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
588 (lp#1154946, lp#1072112)
589 * bug fix: compiling make-array no longer signals an error when the
590 element-type is an uknown type, a warning is issued instead.
591 Thanks to James Kalenius (lp#1156095)
592 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
593 produces wrong results for some inputs. (Thanks to Jan Moringen.)
596 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
597 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
599 * new feature: package local nicknames. See manual for details.
600 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
601 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
602 * enhancement: easier to use restarts for resolving name-conflicts
603 resulting from IMPORT, EXPORT, or USE-PACKAGE.
604 * enhancement: variant DEFPACKAGE forms now signal a full error with
605 restarts provided for resolving the situation. (lp#891351)
606 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
607 DEFPACKAGE forms can now signal a full error with restarts provided for
608 resolving the situation. See manual for details. (lp#891351)
609 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
610 (Thanks to Anton Kovalenko.) (lp#1102748)
611 * enhancement: backtrace improvements
612 ** secondary CLOS dispatch functions have better debug names (lp#503081)
613 ** easier to read method names in backtraces. See
614 SB-DEBUG:*METHOD-FRAME-STYLE*.
615 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
616 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
617 SB-DEBUG:BACKTRACE-AS-LIST.
618 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
619 information is available in less intrusive form as frame annotations.
620 * enhancement: SB-POSIX now provides MAP-ANON.
621 * enhancement: test-suite results are colorized, failures in red, unexpected
622 success in green. Works on Windows and on terminals with ANSI escape code
623 support. Can be disabled with --no-color.
624 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
625 (thanks to James M. Lawrence)
626 * bug fix: no more unused variable style warnings from RESTART-CASE
627 macroexpansion (lp#1113859)
628 * bug fix: no more unused variable style warnings when loading
629 sb-bsd-sockets.asd (lp#1114681)
630 * bug fix: deleting a package removes it from implementation-package
631 lists of other packages.
632 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
633 This does not fix the occasional "interrupt already pending" issue, though.
634 * bug fix: (setf (documentation 'x 'function)) and
635 (setf (documentation #'x t)) set documentation in different places.
636 (regression since 1.0.43.63)
637 * bug fix: build on newer glibc. (lp#1095036)
639 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
640 * optimization: LOOP expressions using "of-type character" have slightly
641 more efficient expansions.
642 * bug fix: very long (or infinite) constant lists in DOLIST do not result
643 in very long compile times or heap exhaustion anymore. (lp#1095488)
644 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
645 * bug fix: adjust-array ignored :initial-element for simple-vectors.
647 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
648 longer cause infinite loops (on circular data) or violate eqlity
649 constraints. (lp#1099708)
650 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
652 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
653 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
655 * enhancement: support for C-c to interrupt the foreground thread
656 on Windows. (Thanks to Anton Kovalenko.)
657 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
658 * enhancement: Safepoint builds on POSIX platforms can now optionally be
659 built without pseudo-atomic sequences and their run-time overhead.
660 * enhancement: Threads created outside of Lisp can enter Lisp through
661 alien callbacks and appear as Lisp threads for the duration of that
662 function invocation. On safepoint builds only.
663 * enhancement: Miscellaneous improvements to namestrings and underlying
664 calls to OS functions for file system access on Windows. (Thanks to
666 * enhancement: The MSI installer support for Windows now uses Windows
667 Installer XML at least version 3.5 and includes various usability
668 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
669 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
670 on Windows. (Thanks to Anton Kovalenko.)
671 * enhancement: The Windows backend now supports the x86-64 platform.
672 (Thanks to Anton Kovalenko.)
673 * bug fix: fasls are now once again directly executable (on platforms
674 supporting shebang lines, with a suitably-installed sbcl).
675 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
676 * bug fix: Fix CAS access to slots of direct instances of structure classes
677 in the presence of subclasses sharing the same conc-name.
678 * bug fix: Logical pathname namestrings on Windows have been changed to
679 be lower-case, to minimize differences between POSIX and Windows.
681 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
682 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
683 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
684 (NT 5.0) is no longer being maintained.
685 * notice: Starting with this version, SBCL on Windows no longer supports
686 building with disabled thread support.
687 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
688 * enhancement: New feature sb-dynamic-core allows the runtime to be
689 rebuilt or relocated without requiring changes to the core file on
690 all linkage table platforms. Required on Windows. (Thanks to Anton
692 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
693 * enhancement: I/O on Windows unnamed pipes is interruptible
694 asynchronously using interrupt-thread, timers when running on Windows NT
695 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
697 * enhancement: Support for the experimental safepoint-based stop-the-world
698 protocol on the PowerPC platform.
699 * bug fix: Non-blocking reads from the Windows console were not necessarily
700 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
701 * bug fix: stability of threads on Windows has been improved upon through
702 an updated stop-the-world protocol (thanks to Anton Kovalenko).
704 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
705 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
706 (COMPILE and COMPILE-FILE still do.)
707 * optimization: the SPARC backend now supports the precise generational
708 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
709 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
710 * enhancement: add experimental support for the SB-THREAD feature and the
711 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
712 Threads are enabled by default, and this version of SBCL is considered
713 to be the last and final release to officially support building with
715 * optimization: The compiler no longer rotates loops in some cases where
716 this transformation actually lead to worse code being generated.
717 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
718 symbol-macros by lexical bindings.
719 * bug fix: stack allocation was prevented by high DEBUG declaration in
721 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
722 (thanks to SANO Masatoshi)
723 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
724 :JUNK-ALLOWED was true.
725 * bug fix: type derivation inferred overly conservative types for
726 unions of array types. (lp#1050768)
728 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
729 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
730 source annotation of DISASSEMBLE output. Defaults to T.
731 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
732 WAIT-P argument added to WITH-RECURSIVE-LOCK.
733 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
735 * enhancement: Optional features (not enabled by default) allow the
736 use of signals for inter-thread synchronization to be reduced on certain
737 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
738 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
739 to test these experimental features. Known remaining bugs include minor
740 thread safety issues, less timely freeing of memory by GC, and certain
741 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
742 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
743 comparisons, particularly on almost-sorted inputs.
744 * bug fix: Reading floats with large exponents no longer takes too much time
745 before reporting that the exponent is too large.
746 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
747 correctly when the received datagram is larger than the provided buffer.
748 (lp#1023438, thanks to Robert Uhl)
749 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
750 a SYMBOL-VALUE form with a constant symbol argument.
751 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
752 into a DEFCAS defined place was used as the place.
753 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
754 for from bit-vectors.
755 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
756 lead to internal errors or crashes (lp#1058799).
757 * documentation: a section on random number generation has been added to the
760 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
761 * enhancement: implicit generic function warnings now specify the package
762 in which the new generic function is being created.
763 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
764 updates of CAS-able places (similar to Clojure's swap!).
765 * enhancement: run-program no longer decodes and re-encodes environment when
766 :environment argument is not provided. (lp#985904)
767 * enhancement: errors during compiler-macro expansion no longer cause
768 runtime errors, only a compile-time warning, otherwise behaving as if
769 the compiler macro had declined to expand.
770 * optimization: On x86-64, code alignment of block headers is done with
771 multi-byte NOPs now instead of repetitions of the single-byte NOP.
772 * optimization: MAP-INTO is substantially faster when the target sequence is
773 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
774 thanks to James M. Lawrence)
775 * optimization: the compiler no longer heap-conses to check exits in cases
776 where the exit function is dynamic extent, or when it can prove the exit
777 function cannot escape. (lp#1002534)
778 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
779 element type, and vectors that aren't SIMPLE-ARRAYs.
780 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
781 speed (around 1/3 the time in some cases), and a little better in terms of
782 comparison calls. (Thanks to Takeru Ohta)
783 * bug fix: On SPARC, a limitation on the number of code constants emittable
784 by the compiler has been lifted, allowing certain long functions to
785 compiled and assembled which had previously been unsupported; fixes
786 cl-bench on this ISA (lp#1008996).
787 * bug fix: potential for infinite recursion during compilation of CLOS slot
788 typechecks when dependency graph had loops. (lp#1001799)
789 * bug fix: error forms reported with some program-errors were not escaped
791 * bug fix: functions from EVAL are now on more equal footing with functions
792 from COMPILE. (lp#1000783, lp#851170, lp#922408)
793 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
794 objects as its :METHOD-COMBINATION argument, not just lists designating
795 method combinations. (lp#936513)
796 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
798 * bug fix: restore build on solaris/sparc. (lp#1008506)
799 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
800 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
801 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
802 as keyword arguments no longer accidentally match unevaluated symbols
804 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
805 parameter was zero, now it signals an error. (lp#905817, fixed since
807 * bug fix: run-program with :pty t no longer makes the pty as the process's
809 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
812 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
813 * RANDOM enhancements and bug fixes:
814 ** bug fix: the range and distribution of random integers could be
815 catastrophically wrong when the compiler derived the type of its
816 argument as a disjoint set of small integers.
817 ** bug fix: the distribution of random integers is now completely
818 uniform even when the specified limit is not a power of two.
819 (Previously some values could be about 0.1 % more probable than
820 others in the worst case.) (lp#309467)
821 ** RANDOM on large integer arguments is generally faster and conses
822 less than before; this is visible for fixnums above a length of
823 about 24 bits, but extremely so for bignums: the old implementation
824 used time and space quadratical in the size of the argument there,
825 the new one is linear.
826 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
827 main entry point, SB-EXT:QUIT is deprecated.
828 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
829 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
830 * enhancement: FASL loading no longer grabs the world-lock.
831 * enhancement: GENCGC reclaims space more aggressively when objects being
832 allocated are a large fraction of the total available heap space.
834 * enhancement: backtraces show the correct number of arguments for frames
835 called with too many arguments.
836 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
838 * enhancement: ASDF has been updated 2.21.
839 * optimization: fewer uses of full calls to signed modular functions.
841 * optimization: typechecking alien values is typically 5 x faster.
842 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
844 * bug fix: file compilation performance issues when dumping subtypes
845 of CHARACTER (lp#994487)
846 * bug fix: fixed disassembly of some SSE instructions on x86-64.
847 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
848 OPEN. (lp#969352, thanks to Kambiz Darabi)
849 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
851 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
852 classoid even if X was not the proper name of the class. (lp#941102)
853 * bug fix: declaration leakage between lexical environments due to careless
854 use of NCONC in MAKE-LEXENV. (lp#924276)
855 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
856 *default-pathname-defaults* contains NAME or TYPE components.
857 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
858 from CL package, e.g. (loop . 10).
859 * bug fix: run-program with existent or non-existent files for :output or
860 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
861 returns NIL instead of signalling an obscure error.
862 * bug fix: fix miscompilation of some logand forms with large constant
863 arguments. (lp#974406)
864 * bug fix: account for funcallable-instance objects properly in ROOM.
865 * bug fix: incorrect octets reported for c-string decoding errors.
867 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
869 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
870 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
871 allowing faster release of memory back to the OS. (lp#991293)
872 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
873 existing deadline for the dynamic scope of its body.
874 * bug fix: compiler-internal interval arithmetic needed to be more
875 conservative about open intervals when operated on by monotonic but not
876 strictly-monotonic functions. (lp#975528)
877 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
878 it's also slightly faster. (lp#998926)
879 * bug fix: better error messages for malformed declarations.
881 * bug fix: define-condition didn't return the name of the defined condition.
883 ** improved docstrings: REPLACE (lp#965592)
885 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
886 * bug fix: fix copy-structure. When copying from stack to heap, garbage
887 could end up in the heap making GC unhappy.
888 (Thanks to James Knight, lp#911027)
890 ** SBCL can now be built using Clang.
891 ** ASDF has been updated 2.20.
892 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
893 * bug fix: don't complain about a too-hairy lexical environment for inlining
894 when the function has never been requested for inlining. (lp#963530)
896 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
897 * enhancements to building SBCL using make.sh:
898 ** --fancy can be specified to enable all supported feature enhancements.
899 ** --with-<feature> and --without-<feature> can be used to specify
900 which features to build with.
901 ** --arch option can be used to specify the architecture to build for.
902 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
903 full-blows cross-compilation.)
904 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
905 which allows specifying name of the default interning package for the
907 * enhancement: when *READ-EVAL* is true, arrays with element type other than
908 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
909 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
910 null alien when malloc() fails. (lp#891268)
911 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
912 conditions can be conveniently accessed through function with the same
913 name, analogously to CONTINUE.
914 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
915 from the printer by type, causing an error marker to be printed instead.
916 (Thanks to Attila Lendvai)
917 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
918 generally behave better when errors occur during printing.
919 * enhancement: the test runner now takes a --report-skipped-tests argument
920 to report the individual tests skipped as well as the number of skipped
922 * enhancement: undefined functions now appear in backtraces as ("undefined
923 function") instead of ("bogus stack frame") on x86oids.
924 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
925 deadlock errors are reported in an easier-to-decipher manner.
926 * enhancement: DESCRIBE on type designators reports the expansion in more
928 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
929 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
930 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
931 * enhancement: better disassembly of segment-prefixes on x86 and other
932 instruction prefixes (e.g. LOCK) on x86 and x86-64.
933 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
934 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
935 * optimization: SUBSEQ on vectors of unknown element type is substantially
937 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
938 be stack-allocated. (lp#902351)
939 * optimization: the compiler is smarter about representation selection for
940 floating point constants used in full calls.
941 * optimization: the compiler no longer refuses to coerce large fixnums to
942 single floats inline, except on x86 where this limitation is still
944 * optimization: truncation operations on integers with constant divisor
945 arguments 1 and -1 are optimized away.
946 * bug fix: deadlock detection could report the same deadlock twice, for
947 two different threads. Now a single deadlock is reported exactly once.
948 * bug fix: interval-arithmetic division during type derivation did not
949 account for signed zeros.
950 * bug fix: compiler error when typechecking a call to a function with
951 non-constant keyword arguments.
952 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
953 * bug fix: condition slot accessors no longer cause undefined function
954 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
955 form that defines them. (lp#896379)
956 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
958 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
959 bogusly report NIL, T.
960 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
961 required arguments ignored and performed assignments to others.
963 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
964 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
965 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
966 * bug fix: redefining a function whose previous definition contained an
967 unknown type no longer causes a style-warning. (lp#806243)
968 * bug fix: undefined functions now appear in backtraces as ("undefined
969 function") instead of ("bogus stack frame") on non-x86oids.
970 * bug fix: backtraces are no longer cut off at ("undefined function") when
971 called under certain circumstances (involving a caller-allocated stack
973 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
974 systems. (regression since 1.0.53)
975 * bug fix: GC deadlocks from dladdr() on certain platforms.
976 * bug fix: broken standard streams no longer automatically cause recursive
977 errors on debugger entry.
978 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
979 (regression since 1.0.53)
980 * bug fix: attempts to stack allocate a required argument to a function with
981 an external entry point caused compiler-errors.
982 * bug fix: compiler notes for failed stack allocation for a function argument
983 no longer claim to be unable to stack allocate the function.
984 * bug fix: COERCE now signals a type-error on several coercions to
985 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
986 * bug fix: missing failure-to-stack-allocate compiler notes for some
987 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
988 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
990 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
992 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
993 * minor incompatible changes:
994 ** RENAME-FILE on a symbolic links used to rename the linked-to file
996 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
997 directory, but now signal an error instead. Use TRUENAME to resolve the
998 pathname if you wish to delete the linked directory, and DELETE-FILE if
999 you wish to delete the
1000 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1001 symbols associated with it will trigger a compile-time warning.
1002 * thread-related enhancements:
1003 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1004 Many thanks to generous donors!)
1005 ** Threading is now more reliable on non-Linux platforms. We still don't
1006 consider threads on non-Linux platforms good enough to enable them by
1007 default, but they're in a clearly better shape now.
1008 ** Deadlines supported now on all platforms.
1009 ** All blocking functions in the threading API now have a :TIMEOUT
1011 ** Semaphore notification objects have been added to SB-THREAD.
1012 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1013 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1014 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1015 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1016 using an API anologous to defining new SETFable places.
1017 * GC-related enhancements and bug fixes:
1018 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1019 and Gb suffixes. Default is megabytes as before.
1020 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1021 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1022 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1023 new defaults are in place to prevent hitting swap on low-end systems.
1024 Use build-time option --dynamic-space-size to build an SBCL with
1025 another default, or the runtime option to adjust the size at startup: a
1026 good size is at most equal to the amount of physical memory the system
1028 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1030 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1031 refuses to create SIMPLE-FUN objects.
1032 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1034 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1035 validation of pointer objects as GENCGC does, instead of a
1036 comparatively weak bounds-check against the heap spaces.
1037 * SB-BSD-SOCKETS bug fixes:
1038 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1039 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1040 systems with getaddrinfo().
1041 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1042 safe outside systems with getaddrinfo().
1043 * enhancement: ASDF has been updated 2.019.
1044 * enhancement: special-case TCO prevention for functions which never return
1045 extended to untrusted types, keeping one more frame's worth of debug
1046 information around in many cases.
1047 * enhancement: debug-names of anonymous and local function are more
1048 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1049 * enhancement: on win32, ABS of complex floats guards better against
1050 overflows. (lp#888410)
1051 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1052 process exiting with code 1. (lp#676987)
1053 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1054 the system where on the filesystem the SBCL sources themselves are
1055 located. (Thanks to Zach Beane)
1056 * enhancement: the compiler is now able to derive tighter bounds for
1057 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1058 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1059 correctly, even on wide-fixnum builds. (lp#887220)
1060 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1061 resolved to directories.
1062 * bug fix: type mismatch when assigning to lexical variables no longer
1063 result in fasl-dumping internal type objects. (lp#890750)
1064 * bug fix: type mismatch on (SETF AREF) and function return values no
1065 longer result in fasl-dumping internal type objects.
1066 * bug fix: With several combinations of argument types, for example (EXPT
1067 <integer> <(complex double)>), EXPT now uses double-precision throughout
1068 instead of partially calculating only to single-precision. (lp#741564;
1069 thanks to Lutz Euler)
1070 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1071 objects when interrupted by GC on PPC.
1073 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1074 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1075 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1076 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1077 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1078 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1079 targets is now 63 bits (up from 61).
1080 * enhancement: DESCRIBE now reports a lambda-list and source location
1081 for complext setf-expanders.
1082 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1083 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1084 of multiple-valued places to be set to NIL, instead of signalling an
1085 error (per a careful reading of CLHS 5.1.2.3).
1086 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1087 * bug fix: repair crash in x86oid darwin signal handling emulation
1088 when built with certain compilers.
1089 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1090 rotation arguments on x86-64. (lp#882151)
1091 * bug fix: low-level control flow optimisations could result in bogus
1092 code in functions with tail and non-tail calls to local functions on
1093 x86oids. (lp#883500)
1094 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1095 to emit literal characters > (code-char 4095), for comparisons with
1096 constant characters.
1097 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1098 on 64 bit platforms. (lp#881445)
1099 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1100 delete the wrong file when using relative pathnames. (lp#882877)
1101 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1102 sequences and :KEY NIL.
1104 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1105 * enhancement: ASDF has been updated to version 2.017.
1106 * enhancement: the --core command line option now accepts binaries with
1108 * enhancement: when built with :sb-core-compression, core files (regular
1109 or executable) can be compressed with zlib. Use the :COMPRESSION
1110 argument to SAVE-LISP-AND-DIE to specify a compression level.
1111 * enhancement: --[no-]merge-core-pages determines whether the runtime
1112 hints the operating system that identical core pages between SBCL
1113 processes should share the same physical memory. Default is to only
1114 enable this for compressed cores.
1115 * optimization: SLEEP no longer conses.
1116 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1117 or bit-vectors when using the standard pretty-print dispatch table.
1118 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1120 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1121 AREF, CHAR, etc. (lp#826971)
1122 * bug fix: compiler-errors causes by integer arguments with composed of
1123 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1124 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1125 expressions. (lp#770184)
1126 * bug fix: complex single float literals are correctly aligned when used
1127 as arguments of arithmetic operators.
1128 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1129 fixnum is correct. (reported by Peter Keller)
1130 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1131 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1133 * bug fix: redefining classes such that slots with custom allocation are
1134 added or removed works again.
1136 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1137 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1138 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1139 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1140 * enhancement: added support for socket keepalive timeout intervals
1141 and probe counts on Linux.
1142 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1143 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1144 * enhancement: added new toplevel options --quit and --non-interactive
1146 * enhancement: the Windows port of SBCL now builds and runs on Wine
1147 (thanks to Anton Kovalenko).
1148 * enhancement: more, and more correct, SSE instruction definitions on
1149 x86-64 (thanks to Alexander Gavrilov).
1150 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1151 to help the processor execute spin loops, when applicable. Currently
1152 implemented for x86 and x86-64.
1153 * optimization: unsigned integer divisions by a constant are implemented
1154 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1155 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1156 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1157 instructions. (lp#814688)
1158 * bug fix: COERCE to unfinalized extended sequence classes now works.
1159 (reported by Jan Moringen; lp#815155)
1160 * bug fix: a compiler error during typecheck generation, reported by Eric
1161 Marsden. (lp#816564)
1162 * bug fix: obsolete instance protocol fires when shared slots are added
1164 * bug fix: fixed-format floating point printing with scaling factors.
1166 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1167 backtraces. (lp#818460)
1168 * bug fix: better backtraces for interrupted syscall frames on x86.
1170 * bug fix: SSE comparison instructions can be disassembled even when one
1171 operand is in memory. (lp#814702)
1172 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1173 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1174 type information associated with the VALUES form.
1175 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1177 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1178 first write (lp#561642).
1179 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1180 * bug fix: bound propagation involving conversion of large bignums to
1181 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1183 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1184 functions; reported by Lutz Euler (lp#826459).
1185 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1188 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1189 * enhancement: errors from FD handlers now provide a restart to remove
1190 the offending handler.
1191 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1193 * enhancement: location of user or system initialization file can now easily
1194 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1195 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1196 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1197 the thunk, as a keyword argument, :arguments.
1198 * enhancement: constraint propagation is simplified (and sped up) when
1199 COMPILATION-SPEED > SPEED.
1200 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1201 * enhancement: debugger understands &MORE arguments better.
1202 * optimization: extracting bits of a single-float on x86-64 has been
1203 optimized. (lp#555201)
1204 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1205 when (> SPEED SPACE).
1206 * optimization: local call trampolines (x86 and x86-64) are emitted
1208 * optimization: implicit value cells for dynamic-extent closed-over bindings
1209 on x86 and x86-64 can hold unboxed values as well.
1210 * meta-optimization: improved compilation speed, especially for large
1211 functions. (lp#792363 and lp#394206)
1212 * bug fix: bound derivation for floating point operations is now more
1213 careful about rounding possibly closing open bounds. (lp#793771)
1214 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1215 backwards incompatible change in 1.0.48.27)
1216 * bug fix: occasional debugger errors in when a type-error occured in a
1217 function with dynamic-extent &rest list.
1218 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1219 boa-construtors can be used to initialized structure slots.
1220 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1221 (lp#795705, regression)
1222 * bug fix: DIRECTORY works better on logical pathnames.
1223 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1224 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1225 * bug fix: the compiler no longer constant-folds NaNs in
1226 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1227 * bug fix: FORMAT now handles floating point rounding correct, eg.
1228 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1230 * bug fix: style warning during lambda-list introspection of generic
1231 functions with both optional and key argments.
1232 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1233 folding. (lp#729765)
1234 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1237 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1238 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1239 interrupts for its body.
1240 * enhancement: source locations are now available for files loaded as
1241 source, compile-time-too evaluation, and initialization files.
1242 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1243 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1244 when a temporary file is used for compilation.
1245 * enhancement: ASDF has been updated to version 2.015.3.
1246 * enhancement: backtraces involving frames from the default evaluator are
1248 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1250 * enhancement: more informative compile-time warnings and runtime errors for
1251 type-errors detected at compile-time.
1252 * enhancement: deadlock detection for mutexes and spinlocks.
1253 * enhancement: dynamic-extent for &rest lists stack allocate only their
1254 spines, not their argumets. While portable code should not rely on this,
1255 particularly in combination with inlining, it should make dynamic-extent
1256 easier to use safely.
1257 * enhancement: SB-POSIX improvements:
1258 ** WNOHANG and WUNTRACED are exported.
1259 ** SYSCALL-ERROR now also provides the name of the failing system call.
1260 * enhancement: --script improvements:
1261 ** errors on standard input, output, and error streams are handled and
1262 cause scripts to exit silently, making them easier to use in shell
1264 ** backtraces from scripts now go to standard error instead of the
1265 terminal even if one is available.
1266 ** --script can be an argument, causing the script to be loaded from
1268 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1269 strings to foreign memory.
1270 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1271 a file, making it easier to understand heap dynamics.
1272 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1273 allows the compiler to automatically elide rest-list allocation so long as
1274 the call sites are in functions that the compiler knows cannot escape.
1276 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1277 especially in safe code when none of the required arguments have changed
1279 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1280 uninterruptible, as well as blocking reads from socket streams created
1281 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1282 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1283 from the to-char if the from-char is not a dispatch-macro character.
1284 * bug fix: references to undefined variables in function calls that are
1285 optimized away now signal a runtime error. (lp#722734)
1286 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1287 types from a function defined in the same file. (regression from
1289 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1291 * bug fix: spurious errors during QUIT when standard streams were closed.
1293 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1294 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1295 years, is now no longer supported.
1296 * enhancement: read() and write() have been added to SB-POSIX.
1297 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1298 accurately, allowing better typechecking of call-sites.
1299 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1300 are no longer caught. (reverted to pre 1.0.34 behaviour)
1301 * optimization: slightly faster ISQRT. (lp#713343)
1302 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1303 * bug fix: TRACE behaves better when attempting to trace undefined
1304 functions. (lp#740717)
1305 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1306 to (FUNCALL #'(LAMBDA ...) ...).
1307 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1308 a compile-time error. (lp#720382)
1309 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1311 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1312 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1313 optimization. (regression from 1.0.45.18/1.0.46.15)
1314 * bug fix: package locks did not protects against compile-time side-effects
1315 of DEFUN. (lp#675584)
1316 * bug fix: --dynamic-space-size argument is validated more carefully.
1318 * bug fix: memory fault from printing a malformed simple-condition.
1320 * bug fix: redefining classes so that slot-definition classes change now
1321 engages the obsolete instance protocol. (lp#766271)
1322 * bug fix: constant improper lists could break source coverage recording.
1324 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1325 could exhaust stack.
1327 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1328 * bug fix: fix mach port rights leaks in mach exception handling code on
1329 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1331 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1332 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1333 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1334 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1335 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1336 processed using EVAL -- now the appropriate toplevel form is reported instead.
1337 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1338 declarations. (lp#726331)
1339 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1340 that NIL/NULL is excluded from the type.
1341 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1343 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1344 and its compatriots.
1345 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1346 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1347 stack-allocated values out of their dynamic-extent. (lp#310175)
1348 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1349 x86-64 builds caused a type-error.
1350 * bug fix: calling COMPILE with something else than a lambda-expression as the
1351 second argument reports a more sensible error. (lp#718905)
1352 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1353 are detected. (lp#520607)
1354 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1356 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1357 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1358 methods. (regression from 1.0.45.18)
1359 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1360 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1361 * bug fix: several foreign functions accepting string also accepted NIL and
1362 consequently caused a memory fault at 0 now signal a type-error instead.
1364 * bug fix: under rare circumstances, constraint propagation could rewrite a
1365 variable reference to refer to a variable not in scope, causing an error
1366 during physical environment analysis when attempting to close over the
1367 variable. (lp#551227)
1368 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1370 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1371 * enhancement: largefile support on Solaris.
1372 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1373 arguments (lp#710017)
1374 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1375 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1377 * optimization: ERROR and CERROR are approximately 5 times faster.
1378 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1379 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1380 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1381 up instance creation in those cases.
1382 * optimization: arithmetic operations with multiple constant arguments in now
1383 have them reduced at compile-time. (lp#676414)
1384 * optimization: determining current character position on string-streams for
1385 pretty-printing was overly slow.
1386 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1387 lifetime analysis to overwrite closed-over variables (lp#681092).
1388 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1389 were not handled correctly (lp#713063).
1390 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1392 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1393 mistake. (lp#667297).
1394 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1395 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1396 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1397 unintern the wrong symbol with the same name. (lp#693796)
1398 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1399 making it possible to restore the initial table if it has been messed up.
1402 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1403 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1404 Refer to documentation for details.
1405 * enhancement: ASDF has been updated to version 2.010.
1406 * optimization: mutated closed-over variables that are only accessed by
1407 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1408 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1409 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1410 * optimization: UNWIND-PROTECT cleanup functions are now declared
1412 * bug fix: backtracing function with &REST arguments now shows the full
1413 argument list. (lp#310173)
1414 * bug fix: return types for functions with complex lambda-lists are now
1415 derived properly (lp#384892)
1416 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1417 long string arguments slowed the compiler down to a crawl.
1418 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1419 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1420 in the DEFMETHOD body.
1421 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1422 messages, being instead replaced with the corresponding function name.
1423 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1424 operators. (lp#309448)
1426 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1427 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1428 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1429 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1431 * enhancement: default dynamic-space size can be configured at build-time
1432 without touching source, using the --dynamic-space-size argument to make.sh.
1433 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1434 qualities, and mentions ALWAYS-BOUND declarations.
1435 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1437 * enhancement: ASDF has been updated to 2.009.
1438 * enhancement: the system detects known type-erros in calls better,
1439 signalling a full warning about violated proclaimed FTYPEs and violations
1440 of derived FTYPEs within the same file, including self-calls.
1441 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1442 * optimization: constant-folding exploits numeric and character types, in
1443 addition member types.
1444 * optimization: numeric, character and member types that are inhabited by
1445 exactly one value are tested with EQL.
1446 * optimization: more conditional branches are eliminated during IR1.
1447 Branches are simplified before performing if/if-conversion, and simple
1448 equivalent branches (that only read the same constant or variable) are
1450 * improvements to the Windows port:
1451 ** change: canonical unparsing form for pathname namestrings now uses / as
1452 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1453 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1454 on Windows. (thanks to Kalyanov Dmitry)
1455 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1457 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1458 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1459 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1460 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1462 * bug fix: interrupts arriving during CL:OPEN caused an error.
1463 * bug fix: overeager character buffering could cause input to block
1464 spuriously when reading from a pipe (lp#643686)
1465 * bug fix: more efficient timer expiry should avoid starvation on systems
1466 where number of SIGALRMs per second is restricted. (lp#375515)
1467 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1468 * bug fix: compile-times no longer scale linearly with the size of
1469 quoted lists in source-code. (lp#654289)
1470 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1471 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1472 so badly. (lp#654485)
1473 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1474 an error for eg. STRUCTURE. (lp#458015)
1475 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1476 (lp#613871, thanks to Roman Marynchak)
1477 * bug fix: more reliable &REST list type derivation. (lp#655203)
1478 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1479 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1480 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1481 also declared NOTINLINE. (lp#655581)
1482 * bug fix: the compiler could attempt to emit constant left shifts of
1483 greater value than n-word-bits. (lp#309063)
1484 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1485 type information for the function being set. (lp#659220)
1486 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1487 containing self-calls were recompiled with a new signature, and failed
1488 to warn when a self-call using the old signature was left in. (lp#655126)
1489 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1490 :DEFAULT when the default external had character size other than 8 bits.
1492 * bug fix: derived types of functions in the same file were implicitly
1493 trusted, leading to potential heap corruption when those function were
1494 defined incompatibly. (lp#657499)
1495 * bug fix: existing ASDF source registries are ignored when building
1496 contribs (lp#659105)
1497 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1498 (lp#655824, thanks to Roman Marynchak)
1499 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1500 package-lock violation was detected. (lp#660752)
1501 * bug fix: the system can store different docstrings for a single function
1502 under different names. (lp#661631, regression from 1.0.29.24)
1503 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1504 properly. (lp#384801)
1505 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1506 of specified length could confuse the type derivation in unsafe code.
1508 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1509 fork with multiple Lisp threads running is made on every platform,
1510 not just Darwin. (lp#451111)
1511 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1512 around when core was saved, which could cause undefined behaviour when the
1514 * bug fix: Allow UNTRACE of functions that are no longer defined
1515 (lp#667657, thanks to Attila Lendvai)
1516 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1517 compile-time warning (lp#664373, thanks to Stas Boukarev)
1519 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1520 * incompatible change: FD-STREAMS no longer participate in the serve-event
1521 event-loop by default. (lp#316072)
1522 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1523 affects streams from CL:OPEN.
1524 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1525 default, but this is liable to change: applications needing serve-event
1526 for socket streams should explicitly request it using :SERVE-EVENTS T
1528 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1530 * enhancement: CLOS effective method functions and defclass slot typechecking
1531 function now have debug names for use in backtraces and profiles.
1532 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1534 * enhancement: symbols are printed using fully qualified names in several
1535 error and warning messages which are often associated with package
1536 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1537 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1538 thanks to Andrew Golding)
1539 * bug fix: reading /proc files on Linux works. (lp#425199)
1540 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1542 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1543 breaking code that tried to write the value of a printer control variable.
1544 (lp#581564, thanks to Stas Boukarev)
1545 * bug fix: WRITE compiler macro did not handle output stream designators
1546 correctly. (lp#598374, thanks to Stas Boukarev)
1547 * bug fix: better availability of names of foreign functions in backtraces
1548 on Linux. (lp#626962, thanks to Stas Boukarev)
1549 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1550 lp#627581, thanks to Josh Elsasser and Jim Wise)
1551 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1552 thanks to Josh Elsasser)
1553 * bug fix: using aliases for builtin classes as defmethod specializers
1554 without adding DEFTYPEs for them works. (lp#618387)
1555 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1557 * bug fix: legally dynamic-extent lists and vectors used as
1558 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1559 * bug fix: inline-expansion creating references to dead lambda-variables
1560 (lp#454681, thanks to Alexey Dejneka)
1561 * bug fix: better error message for bogus numerical arguments to RANDOM.
1562 (lp#598986, thanks to Stas Boukarev)
1563 * bug fix: the compiler occasionally inlined references from incompatible
1564 environments occurs. (lp#308951)
1565 * bug fix: the compiler threw an error when trying to compile a local
1566 function (labels or flet) known to take a specialized complex argument.
1567 (not in launchpad, reported by sykopomp in #lispgames)
1568 * bug fix: package-locks failed to protect against compile-time effects of
1569 DEFUN when the symbol previously had a macro definition. (lp#576637)
1570 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1571 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1572 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1573 * bug fix: evaluation in debugger REPL works using the global context when
1574 in frames that do not have sufficient debug information.
1575 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1577 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1579 * bug fix: interrupt taking longer than the requested period caused SLEEP
1580 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1582 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1584 ** Cross-compilation host is now specified to make.sh using
1585 command-line argument --xc-host=<command> instead of a positional
1586 argument. (thanks to Daniel Herring)
1587 ** Install location can be specified to make.sh using command-line
1588 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1589 * optimization: The default implementation of
1590 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1591 * enhancement: Explicit memory barrier operations are now available for use
1592 by multithreaded code. See documentation for details.
1593 * enhancement: Experimental support for threading on Linux/PPC.
1594 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1595 * bug fix: EXPT signals an error if first argument is a zero and second
1596 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1597 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1598 (lp#576594, thanks to Roman Marynchak)
1599 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1600 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1602 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1603 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1604 cached, leading to many fewer expensive calls to
1605 COMPUTE-APPLICABLE-METHODS.
1606 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1607 CLASS argument, search for and call an appropriate optimized ctor function
1609 * bug fix: WRITE always returns the correct value.
1611 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1612 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1613 * bug fix: Name conflicts between symbols passed as arguments to a single
1614 call to IMPORT no longer add multiple symbols with the same name to the
1615 package (detectable via DO-SYMBOLS).
1616 * bug fix: support building without the dlshim on darwin x86 and x86-64
1618 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1620 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1621 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1623 * bug fix: linkage-table entries on PPC now no longer overflow their
1624 space allocation (potentially causing crashes if they are written out
1626 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1627 platforms, preventing the GC from seeing stale pointers on the control
1628 stack in subsequent GCs (which would, and does, break invariants).
1629 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1630 * bug fix: Literal characters with code points greater than about 32767
1631 now work on PPC UNICODE builds.
1632 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1633 high order bits are explicitly cleared out. In some contrived situations,
1634 this could lead to wrong results in mixed real/complex float arithmetic.
1635 * bug fix: Fix function/macro redefinition warnings when building with
1636 clisp. (lp#576787, thanks to Josh Elsasser)
1637 * new platform: experimental support for ppc/openbsd (thanks to Josh
1639 * bug fix: Floating-point traps now work on ppc/linux.
1641 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1642 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1643 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1644 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1645 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1646 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1647 SB-THREAD:GRAB-MUTEX.
1648 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1649 contain additional data structures and tools for concurrent programming;
1650 at the moment it contains a lock-free queue, and a lock-free mailbox
1652 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1653 GET-MUTEX but takes &key rather than &optional parameters. Also added
1654 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1656 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1657 SB-THREAD:WAIT-ON-SEMAPHORE.
1658 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1660 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1661 conditions to defer the deadline for forever.
1662 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1664 * enhancement: errors from NO-APPLICABLE-METHOD and
1665 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1666 generic function call.
1667 * enhancement: SB-BSD-SOCKET improvements
1668 ** sockets and socket streams now have a more informative printed
1669 representation based on the corresponding SOCKET-NAME and
1671 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1673 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1674 CL:CLOSE when appropriate, and no longer disassociates the stream
1675 from the socket if close failed. (lp#543951)
1676 * improvements to the instrumenting profiler
1677 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1678 ** optimization: counters no longer use locks for the overflow mode.
1679 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1680 incurred an off-by-one miscount.
1681 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1682 * enhancement: improved DEFMETHOD pretty-printing.
1683 * enhancement: perform range reduction when arguments are too large for
1684 x87's transcendentals (instead of returning 0). (lp#327192)
1685 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1686 some of CL-PPCRE's macros. (lp#570079)
1687 * enhancement: our machine code is slightly less hostile to valgrind on
1689 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1690 to Robert Swindells and Aleksej Saushev)
1691 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1692 * bug fix: a rare case of startup-time page table corruption.
1693 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1694 to timeouts could be left in an inconsistent state.
1695 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1696 * bug fix: misoptimization of multiplication by one in
1697 (SB-C::FLOAT-ACCURACY 0) policies.
1698 * bug fix: miscounts in SB-PROFILE.
1699 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1700 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1701 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1702 up itself" (March 2010) for further details.
1703 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1704 against length of the list if the element is found before the specified
1705 END is reached. (thanks to Alec Berryman, lp#554385)
1706 * bug fix: errors signalled during package graph modification no longer
1707 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1708 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1709 :SB-DOC feature. (lp#552564)
1710 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1711 * bug fix: more robust runtime executable path detection. (lp#375549)
1712 * bug fix: GCD always returns positive values. (lp#413680)
1713 * bug fix: Converting division to multiplication by reciprocal handles
1715 * bug fix: We were too eager in eliding range reduction tests on x87.
1716 The maximal magnitude is 2^63, not 2^64.
1717 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1719 * bug fix: Maybe restore buildability on Alpha.
1720 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1722 * bug fix: RANDOM-STATE can be printed readably again.
1723 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1724 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1725 types) could result in type mismatches during compilation.
1727 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1728 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1729 stack frame thrown from.
1730 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1731 compiler optimization qualities inside dynamic extent of its body.
1732 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1733 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1735 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1736 constraint propgation, allowing better compilation eg. when used to
1737 access structures with WITH-SLOTS. (lp#520366)
1738 * optimization: the compiler is now more aware of the type of the underlying
1739 storage vector for multidimensional simple arrays resulting in better code
1740 for accessing such arrays.
1741 * optimization: passing NIL as the environment argument to TYPEP no longer
1742 inhibits optimizing it. (lp#309788)
1743 * optimization: more efficient register usage when handling single-float
1744 arguments on x86-64. (thanks to Lutz Euler)
1745 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1746 pre-allocated temporary vectors. (lp#496249)
1747 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1748 in :INITIAL-CONTENTS. (lp#523612)
1749 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1750 functions. (lp#524707)
1751 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1752 WITH-SLOTS usages during compilation.
1753 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1754 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1755 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1756 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1757 instruction (tested on x86oid linux with ud2-breakpoints).
1758 * bug fix: slam.sh now works on win32.
1759 * bug fix: better differences of numeric types. (lp#309124)
1760 * bug fix: arrays declared intersection and union types can have their
1761 upgraded element type derived. (lp#316078)
1762 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1763 threads started during profiling. (lp#472499)
1764 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1766 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1767 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1768 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1769 values instead of signaling an error. (lp#309093)
1770 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1772 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1773 declarations (lp#497321)
1774 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1775 and failed to detect circular lists (lp#452008)
1776 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1778 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1779 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1780 due to it, so that handlers can run.
1781 * bug fix: reparsing undefined types if they have become defined since
1782 parsing. (lp#309128)
1783 * bug fix: missing &REST type in a proclamation for a function with both
1784 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1785 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1786 expanded calls (lp#542174)
1787 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1788 than just at toplevel form.
1790 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1791 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1792 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1793 but work on type specifiers.
1794 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1795 to name a type specifier.
1796 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1797 specifier is valid where "valid" basically means "would be accepted as
1798 second argument of TYPEP".
1799 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1800 returns the function's declared, or derived FTYPE.
1801 * new feature: SB-POSIX now supports accessing the d_ino member of
1802 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1803 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1804 provide for seeding a RANDOM-STATE object with user-provided data or
1805 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1806 attempt to initialize the returned state from the operating system's
1807 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1808 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1809 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1810 * bug fix: Fix grammar and style issues for the docstrings of
1811 printer-related variables and functions. (Thanks to mon_key; launchpad
1813 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1815 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1816 in a row even though a handler defered the deadline long into the
1818 * bug fix: A deadline handler was run without interrupts enabled for a
1819 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1820 in infinitely spinning, non-killable threads.
1821 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1822 before reaching the erring stack frame.
1823 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1824 real power. (launchpad bug lp#525949)
1825 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1826 GENCGC platforms. (launchpad bug lp#529014)
1827 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1828 (launchpad bug lp#525916)
1829 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1830 (Thanks to Robert Goldman)
1832 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1833 * optimization: ROUND with a single single-float or double-float argument
1834 is properly inlined when possible.
1835 * optimization: Slightly better code is generated for integer<->float
1836 conversions and for single-float<->double-float conversions on x86-64.
1837 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1838 code for 32-bit and 64-bit rotations on x86-64.
1839 * bug fix: The install script changes the ownership of directories as well
1840 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1841 launchpad bug lp#508485)
1842 * bug fix: TRUNCATE with a single single-float or double-float argument is
1843 properly inlined when possible. (launchpad bug lp#489388)
1844 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1845 no longer causes a compiler error on x86 and ppc.
1846 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1847 always relative to *READTABLE* rather than the passed argument.
1849 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1850 * minor incompatible change: threading support is now enabled by default
1852 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1854 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1855 are now caught and reported just like errors during macroexpansion.
1856 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1857 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1858 * enhancement: ASDF systems can now depends on SB-QUEUE.
1859 * fixes and improvements related to Unicode and external formats:
1860 ** bug fix: error handling and restart usage in the ucs-2 external format
1862 ** there is now an implementation of the ucs-4 external format.
1863 ** the utf-16 and utf-32 external formats are supported.
1864 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1865 in the environment. setenv() and unsetenv() are also provided. (reported by
1866 Fare Rideau; launchpad bug lp#460455)
1867 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1868 loading. This ensures sensible errors for .FASL files from other
1869 implementations on case-insensitive filesystems. (reported by Willem
1870 Broekema; launchpad bug lp#489417)
1871 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1872 Willem Broekema; launchpad bug lp#489698).
1873 * bug fix: some minor code rearrangements to reenable warning-free building
1874 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1875 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1877 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1880 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1881 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1882 * improvement: support O_LARGEFILE access to files larger than 2GB on
1883 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1884 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1885 definitions for methods specializing on the passed class itself.
1886 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1887 definitions for methods specializing on the passed class itself, or on
1889 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1890 about itself during the build (e.g. for M-? in Slime), if this flag is
1891 enabled in customize-target-features.lisp. This will increase the core
1892 size by about 5-6mb, though, so it's mostly interesting to SBCL
1894 * new feature: various GENCGC tuning parameters have been experimentally
1895 documented and exported from SB-EXT. See documentation for details.
1896 * fixes and improvements related to Unicode and external formats:
1897 ** the Unicode character database has been upgraded to the
1898 Unicode 5.2 standard, giving names and properties to a number of new
1899 characters, and providing a few extra characters with case
1901 ** improvement: restarts for providing replacement input/output on coding
1902 errors for fd-stream external formats.
1903 ** improvement: where :<encoding> is a keyword corresponding to an
1904 external format the system supports, it is now possible to specify
1905 (:<encoding> :replacement <character>) as an external format which will
1906 automatically substitute <character> on encoding or decoding errors for
1907 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1909 ** improvement: the file streams underlying the standard streams (such as
1910 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1911 which uses the replacement mechanism to handle encoding errors,
1912 preventing various infinite error chains and unrecoverable I/O
1914 ** minor incompatible change: the utf-8 external format now correctly
1915 refuses to encode Lisp characters in the surrogate range (char-codes
1916 between #xd800 and #xdfff).
1917 ** fix a typo preventing conversion of strings into octet vectors
1918 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1920 ** fix a bug in the octet multibyte handling of decoding errors and the
1921 USE-VALUE restart. (launchpad bug lp#314939)
1922 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1923 restart on fd-stream decoding errors.
1924 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1925 error is near the end of file.
1926 ** fix a double-error case in unibyte octet conversions, when the first
1927 use of USE-VALUE is ignored.
1928 ** fix bugs in handling of undefined code points in unibyte encodings.
1929 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1930 streams after an UNREAD-CHAR.
1931 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1932 object is allocated in a boxed region of dynamic space.
1933 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1934 fork with multiple Lisp threads running is made, instead of going
1935 ahead with unpredictable consequences. (reported by Leslie Polzer)
1936 * bug fix: uses of slot accessors on specialized method parameters within
1937 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1938 error while finalizing the class. This fix may cause classes with slot
1939 accessors to be finalized later than previously. (reported by Lars Rune
1940 Nøstdal; launchpad bug lp#473699)
1941 * bug fix: restore buildability on the MIPS platform. (regression from
1942 1.0.30.38, reported by Samium Gromoff)
1943 * bug fix: inspecting closures is less likely to fail with a type error.
1944 * bug fix: no timer starvation when setting the system clock back.
1945 (launchpad bug lp#460283)
1946 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1947 standard pprint dispatch table as specified by CLHS.
1948 * bug fix: give CLISP a hint about a type declaration to enable it to build
1949 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1951 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1952 (reported by Attila Lendvai; launchpad bug lp#310132)
1953 * bug fix: distinguish in type specifiers between arrays that might be
1954 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1955 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1956 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1957 * bug fix: setting the value of a symbol-macro within a method in the
1958 presence of type declarations works properly again. (reported by Iban
1959 Hatchondo; launchpad bug lp#485019)
1961 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1962 * optimization: faster FIND and POSITION on strings of unknown element type
1963 in high SPEED policies. (thanks to Karol Swietlicki)
1964 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1966 * improvement: better error signalling for bogus parameter specializer names
1967 in DEFMETHOD forms (reported by Pluijzer)
1968 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1970 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1972 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1973 removes previous default initargs (reported by Lars Rune Nøstdal and
1975 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1976 lambda-lists. (reported by Peter Seibel)
1977 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1978 correctly when starting from an executable core without saved runtime
1979 options (reported by Faré Rideau, thanks to Zach Beane)
1980 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1981 an optimization note instead. (reported by Martin Cracauer)
1982 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1983 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1984 new process group if it doesn't need to share stdin with the sbcl
1985 process. (thanks to Leslie Polzer)
1986 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1987 (reported by Stanislaw Halik)
1989 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1990 * improvement: stack allocation is should now be possible in all nested
1991 inlining cases: failure to stack allocate when equivalent code is manually
1992 open coded is now considered a bug.
1993 * improvements related to Unicode:
1994 ** the Unicode character database has been upgraded to the
1995 Unicode 5.1 standard, giving names and properties to a number of new
1996 characters, and providing a few extra characters with case
1998 ** the system now recognizes and produces names for Unicode Hangul
1999 syllable characters.
2000 ** the EBCDIC-US external-format is now supported for octet operations
2001 (as well as for stream operations).
2002 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2003 be used to output toplevel compile-time effects into a separate .CFASL
2005 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2006 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2008 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2010 * optimization: division of floating point numbers by constants uses
2011 multiplication by reciprocal when an exact reciprocal exists.
2012 * optimization: multiplication of single- and double-floats floats by
2013 constant two has been optimized.
2014 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2015 sufficient type information is available. (thanks to Leslie Polzer)
2016 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2017 known structure objects are as efficient as defstruct generated accessors.
2018 * optimization: unused vector creation can now be optimized away.
2019 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2020 * improvement: a STYLE-WARNING is signalled when a generic function
2021 clobbers an earlier FTYPE proclamation.
2022 * improvement: the compiler is able to track the effective type of
2023 generic function across method addition and removal even in the
2024 absence of an explicit DEFGENERIC.
2025 * improvement: DESCRIBE now reports on symbols naming undefined
2026 but assumed or declared function as well.
2027 * improvement: recompilation of systems using SB-GROVEL now works
2028 (thanks to Leslie Polzer)
2029 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2030 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2032 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2033 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2034 well as user defined declaration names.
2035 ** VARIABLE-INFORMATION is now aware of alien variables.
2036 * improvement: improved address space layout on OpenBSD (thanks to Josh
2038 * improvement: pretty-printing of various Lisp forms has been improved
2039 (thanks to Tobias Rittweiler)
2040 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2041 unused were deleted in safe code. (reported by John Fremlin)
2042 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2044 * bug fix: some out-of-line array predicates were missing (reported by
2046 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2048 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2049 (thanks to Larry D'Anna)
2050 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2051 as well. (reported by Josh Elsasser)
2052 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2053 leading to possible attempts to delete the same file twice. See docstring
2054 on DELETE-FILE for details. (reported by John Fremlin)
2055 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2056 designator argument, rather than its truename. (reported by Luis
2058 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2059 information about some array types. (thanks to Luis Oliveira)
2060 * bug fix: moderately complex combinations of inline expansions could
2061 be miscompiled if the result was declared to be dynamic extent.
2062 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2063 form (+ <variable> <integer>) were miscompiled under certain
2065 * bug fix: in some cases no compiler note about failure to stack allocate
2066 was emitted, even if the objects were in fact heap allocated.
2067 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2068 allocation could cause objects users might reasonably expect to
2069 be heap allocated to be stack allocated.
2070 * bug fix: DESCRIBE signalled an error for generic functions under
2071 certain circumstances. (thanks to Leslie Polzer)
2072 * bug fix: Fixed spelling of an error message.
2074 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2075 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2076 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2077 of SB-THREAD:THREAD-ERROR-THREAD.
2078 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2079 * new feature: docstrings for local and anonymous functions are no longer
2080 discarded. (thanks to Leslie Polzer)
2081 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2082 values in other threads.
2083 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2084 about object allocation.
2085 * optimization: division of a real float by a complex float is implemented
2086 with a specialised code sequence.
2087 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2088 keywords is an order of magnitude faster.
2089 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2090 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2091 methods, and similarly for non-standard metaclass classes as long as there
2092 are no methods additional on MAKE-INSTANCE.
2093 * optimization: more efficient type-checks for FIXNUMs when the value
2094 is known to be a signed word on x86 and x86-64.
2095 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2096 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2098 * optimization: compiler is smarter about delegating argument type checks to
2100 * optimization: several character functions are now compiled somewhat more
2101 efficiently. (reported by Lynn Quam)
2102 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2103 * improvement: less unsafe constant folding in floating point arithmetic,
2104 especially for mixed complex/real -float operations.
2105 * optimization: constant double and single floats are stored in native
2106 unboxed format on x86[-64].
2107 * optimization: smarter code for arithmetic operations with constant floats,
2108 complex floats, or integers on x86[-64].
2109 * optimization: smarter code for conjugate/multiplication of float complexes
2110 and abs/negate of floats on x86-64.
2111 * optimization: more efficient complex float and real float operations on
2113 * improvement: complex float division is slightly more stable.
2114 * improvement: DESCRIBE output has been reworked to be easier to read and
2115 contains more pertinent information.
2116 * improvement: failure to provide requested stack allocation compiler notes
2117 provided in all cases (requested stack allocation not happening without a
2118 note being issued is now considered a bug.)
2119 * bug fix: SB-POSIX exports the documented types and functions
2120 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2121 types. (reported by "abhi")
2122 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2123 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2124 (thanks to Paul Khuong)
2125 * bug fix: looping around HANDLER-CASE could silently consume stack space
2126 on each iteration. (reported by "foobar")
2127 * bug fix: better error signalling when calls to functions seeking elements
2128 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2129 (reported by Tobias Rittweiler)
2130 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2131 directory components now works as it used to. (various prolems reported by
2132 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2133 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2134 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2135 * bug fix: bogus undefined variable warnings from fopcompiled references to
2136 global variables. (thanks to Lars Rune Nøstdal)
2137 * bug fix: foreign function names should now appear in backtraces on
2138 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2139 * bug fix: SETF compiler macro documentation strings are not discarded
2141 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2142 (thanks to Alex Plotnick)
2143 * bug fix: SLEEP accepts large integer arguments, truncating them to
2144 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2145 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2146 * bug fix: compiler notes for expensive slot type checks could be emitted
2147 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2149 changes in sbcl-1.0.29 relative to 1.0.28:
2150 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2151 https://bugs.launchpad.net/sbcl
2152 Bugs can be reported directly there, or by sending email to
2153 sbcl-bugs@lists.sourceforge.net
2154 (no subscription required.)
2155 * minor incompatible change: under weak type checking policy integer
2156 types are weakened less aggressively.
2157 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2158 allowed to return, which causes SBCL to quit with exit status 0. Previously
2159 if the function returned with a small integer return value, that value
2160 was accidentally reused as the exit status.
2161 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2162 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2163 :HASH-FUNCTION argument. Refer to user manual for details.
2164 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2166 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2167 microseconds since the Unix epoch on all platforms.
2168 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2169 allows the compiler to safely elide boundedness checks for special
2171 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2172 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2173 efficiency measure for threaded platforms, but also valueable in
2175 * new feature: UNC pathnames are now understood by the system on Windows.
2176 * optimization: the compiler uses a specialized version of FILL when the
2177 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2179 * optimization: accesses to potentially non-simple arrays where element type
2180 is known are 50% faster.
2181 * optimization: compiler now generates faster array typechecking code.
2182 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2184 * optimization: multidimensional array accesses in the absence of type
2185 information regarding array rank are approximately 10% faster due to
2186 open coding of ARRAY-RANK.
2187 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2188 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2190 * optimization: result of call to VECTOR can now be stack allocated.
2191 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2192 as long as the resulting array is one-dimensional and has a known
2193 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2194 length of the list matches the known length of the vector does not
2195 allocate the list as an intermediate step. Ditto for VECTOR and simple
2197 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2198 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2199 known element type, and is known to be simple and one dimensional.
2200 * improvement: SBCL now emits a compiler note where stack allocation was
2201 requested but could not be provided (not in all cases, unfortunately)
2202 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2203 * improvement: pretty-printing loop has been implemented properly. (thanks
2204 to Tobias Rittweiler)
2205 * documentation: CLOS slot typechecing policy has been documented.
2206 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2207 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2208 pointer, leading to memory faults. (thanks to Bart Botta)
2209 * bug fix: better floating point exception handling on x86/OpenBSD.
2210 (thanks to Josh Elsasser)
2211 * bug fix: exit status from QUIT when called under --script was lost
2212 (reported by Hubert Kauker)
2213 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2214 same implementation of FILL to initialize the array, even if a more
2215 efficient one was available (reported by Stas Boukarev, thanks to
2217 * bug fix: potential miscompilation of array stack allocation on x86 and
2218 x86-64. (reported by Time Tossavainen)
2219 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2220 result in their subforms being treated as top level forms. (reported by
2222 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2223 than a machine register could leave garbage in the high bits of the
2224 result register (bug 316325).
2225 * bug fix: disable address space randomization Linux/x86-64 as well,
2226 not just x86-64. (reported by Ken Olum)
2227 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2228 generate incorrect code.
2229 * bug fix: #201; type inference for CONS and ARRAY types could derive
2230 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2231 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2232 could not be assigned to or bound with PROGV. (reported by Lorenz
2234 * bug fix: the value of CL:- in the inspector was the previous expression
2235 evaluated rather than the expression being evaluated.
2236 * bug fix: constants can no longer be locally declared special.
2237 * bug fix: signals delivered to threads started from foreign land (read:
2238 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2239 thread by blocking all signals and resignalling.
2240 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2241 from :INITFORM, if any.
2243 changes in sbcl-1.0.28 relative to 1.0.27:
2244 * a number of bugs in cross-compilation have been fixed, with the ultimate
2245 result that building under (at least) clisp should be much more reliable.
2246 * minor incompatible changes: echo-streams now propagate unread-char to the
2247 underlying input stream, and no longer permit unreading more than one
2249 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2250 frames, allowing for instance more reliable backtraces.
2251 * improvement: the debugger REPL can now reference lexical variables
2252 by name directly for code compiled with (DEBUG 3).
2253 * improvement: errors from malformed declarations now have better source
2254 paths associated with them. (thanks to Tobias Rittweiler)
2255 * optimization: faster local calls on x86/x86-64
2256 * bug fix: some error messages for out-of-bound array indexes confused the
2257 index and the bound. (thanks to Stas Boukarev)
2258 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2260 * bug fix: running regressions tests in shells without OSTYPE set now works.
2261 (reported by Harald Hanche-Olsen)
2262 * bug fix: more robust static space exhaustion signalling from
2263 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2264 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2265 docstring away instead of storing it under names such as (LAMBDA (X)).
2266 (reported by Leslie Polzer)
2267 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2268 (thanks to Ole Arndt for the patch)
2269 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2270 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2271 potentially-invalid effective methods in its cache.
2272 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2273 instances as well (thanks to Paul Khuong)
2274 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2275 SB-POSIX:WAITPID and their C equivalents.
2276 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2278 changes in sbcl-1.0.27 relative to 1.0.26:
2279 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2280 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2281 * improvement: the system either recovers from stack exhaustion or dies
2282 properly as opposed to leaving the user uncertain of whether the handler
2283 trampled on some random memory next to the stack or having to rely on
2284 --lose-on-corruption (which is still a good idea to use in production
2285 because stack exhaustion can happen in signal handlers which will likely
2287 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2288 1.0.25.37, reported by Harald Hanche-Olsen)
2289 * bug fix: work around signal delivery bug in darwin (regression from
2290 1.0.25.44, reported by Sidney Markowitz)
2291 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2293 changes in sbcl-1.0.26 relative to 1.0.25:
2294 * incompatible change: an interruption (be it a function passed to
2295 INTERRUPT-THREAD or a timer function) runs in an environment where
2296 interrupts can be enabled. The interruption can use
2297 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2298 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2299 potentially running out of stack. Keep in mind that in the absence
2300 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2301 acquiring a lock can enable interrupts.
2302 * incompatible change: GC-OFF and GC-ON are removed, as they were
2303 always unsafe. Use WITHOUT-GCING instead.
2304 * new feature: runtime option --disable-ldb
2305 * new feature: runtime option --lose-on-corruption to die at the
2306 slightest hint of possibly non-recoverable errors: running out of
2307 memory, stack, alien stack, binding stack, encountering a memory
2308 fault, etc. In the absence of --lose-on-corruption a warning is
2310 * enhancement: detect binding stack exhaustion
2311 * enhancement: detect alien stack exhaustion on x86/x86-64
2312 * improvement: generally more stable and reliable interrupt handling
2313 * improvement: there is a per thread interruption queue,
2314 interruptions are executed in order of arrival
2315 * improvement: a repeating timer reschedules itself when the it has
2316 finished, but expiration times are spaced equally. If an
2317 expiration time is in the past it will trigger after a short grace
2318 period that may give a chance to other things to run.
2319 * optimization: slightly faster gc on multithreaded builds
2320 * optimization: faster WITHOUT-GCING
2321 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2322 important locks so that the debugger/handler doesn't produce
2323 recursive errors or deadlock.
2324 * bug fix: real-time signals are not used anymore, so no more
2325 hanging when the system wide real-time signal queue gets full.
2326 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2328 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2329 * bug fix: fix random memory faults related to interrupts on alpha
2330 * bug fix: fix random memory faults related to interrupts on sparc
2331 * bug fix: fix deadlocks related to starting threads
2332 * bug fix: fix deadlines on locks on futex platforms
2333 * bug fix: restore errno in signal handlers
2334 * bug fix: fix deadlocks related to hash tables
2335 * bug fix: fix deadlocks in pcl
2337 changes in sbcl-1.0.25 relative to 1.0.24:
2338 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2339 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2340 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2341 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2342 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2343 better name and does not return values so stale on multiprocessor systems.
2344 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2346 * improvement: unithread builds keep track of MUTEX-VALUE.
2347 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2348 stream anymore making it thread safe to have a concurrent reader and
2349 a writer, for instance, in a pipe.
2350 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2351 arguments, making compiler-macros for SETF-functions able to inspect
2352 their constant arguments.
2353 * improvement: COMPILE-FILE reports times with millisecond accuracy
2354 (thanks to Luis Oliveira)
2355 * optimization: CHAR-CODE type derivation has been improved, making
2356 TYPEP elimination on subtypes of CHARACTER work better. (reported
2357 by Tobias Rittweiler, patch by Paul Khuong)
2358 * bug fix: setting alien structure fields of type struct by value now
2359 computes the right offset for the memory copy.
2360 * bug fix: compilation problem involving inlined calls to aliens with
2361 result type VOID. (reported by Ken Olum)
2362 * bug fix: #235a; sequential inline expasion in different policies no
2363 longer reuses the functional from the previous expansion site.
2364 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2365 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2366 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2367 cause an implied type redefinition. Regression from 1.0.21.29.
2368 * bug fix: sign-extension of small signed return values now works with C
2369 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2370 * improvements to the Windows port:
2371 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2372 Westfold, thanks to Rudi Schlatte)
2374 changes in sbcl-1.0.24 relative to 1.0.23:
2375 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2376 vector of a multidimensional SIMPLE-ARRAY.
2377 * new feature: the system now signals a continuable error if standard
2378 readtable modification is attempted. (thanks to Tobias Rittweiler)
2379 * new feature: DIRECTORY has been extended with a non-standard keyword
2380 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2381 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2382 has been robustified and documented better. (thanks to Robert Goldman)
2383 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2384 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2385 * tradeoff: constant FORMAT control strings are now compiled unless
2386 SPACE > SPEED (previously only when SPEED > SPACE.)
2387 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2389 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2391 * bug fix: lexical type declarations are now correctly reported by
2392 SB-CLTL2. (reported by Larry D'Anna)
2393 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2394 using UTF-8 as external format. (thanks to Luis Oliveira)
2395 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2396 are signalled correctly. (thanks to Stas Boukarev)
2397 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2398 designator. (thanks to Tobias Rittweiler)
2399 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2400 designator, and returns T instead of the function. (thanks to
2402 * bug fix: direct superclasses of STANDARD-CLASS and
2403 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2404 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2405 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2406 when no class with the named slot yet exists no longer causes a
2407 compile-time style-warning.
2408 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2409 in safe code. (reported by Didier Verna)
2410 * bug fix: #430; nested structure constructors can stack allocate.
2411 * bug fix: on some 64-bit platforms dynamic space size was truncated
2412 to #xffff0000 bytes. (reported by Benjamin Lambert)
2413 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2414 REPL unusable. (reported by Daniel Herring)
2415 * bug fix: return values of READ-SEQUENCE did not take :START into
2416 account on file streams, regressions since 1.0.12.22. (reported by
2417 Thomas Russ, patch by Paul Khuong)
2418 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2419 method specializer used to confuse permuation vector optimization.
2420 * bug fix: system inserted bogus implicit type declarations for local
2421 special variables in DEFMETHOD bodies.
2422 * bug fix: #354; duplicated frames in backtraces due to
2423 non-tail-call-optimized XEPs to functions with return type NIL
2425 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2426 initializes structure object slots according to DEFSTRUCT initforms,
2427 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2428 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2429 (reported by Bruno Haible and Stephen Wilson)
2430 * bug fix: #395; fill-pointer output streams used now support
2431 element-type BASE-CHAR as well.
2432 * bug fix: compiler error when attempting to derive return value of
2433 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2435 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2437 * bug fix: Mac OS X binaries should now be portable between Leopard
2440 changes in sbcl-1.0.23 relative to 1.0.22:
2441 * enhancement: when disassembling method functions, disassembly
2442 for the associated fast function is also produced.
2443 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2445 * optimization: printing with *PRINT-PRETTY* true is now more
2446 efficient as long as the object being printed doesn't require
2447 special handling by the pretty printer.
2448 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2449 now interact correctly with type declarations.
2450 * partial bug fix: PCL detects infinite recursion during wrapper
2451 validation. (thanks to Attila Lendvai)
2452 * bug fix: #426; nested function calls are inlined properly.
2453 Previously if FOO was an inline function, in calls of the form
2454 (FOO (FOO ...)) the outer call was not inlined.
2455 * bug fix: long long arguments passed in registers to alien
2456 functions on PowerPC Linux and NetBSD are now handled correctly
2457 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2459 changes in sbcl-1.0.22 relative to 1.0.21:
2460 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2461 for the shared object in the current directory, but passes the native
2462 namestring of the designated pathname to the operation system's shared
2463 object loading function as-it.
2464 * minor incompatible change: --disable-debugger toplevel option now takes
2465 effect before processing of initialization files and --eval or --load
2467 * new feature: new commandline argument: --script, which supports
2468 shebang lines. See documentation for details. (based on work by
2470 * new feature: SAVE-LISP-AND-DIE can save current values of
2471 --dynamic-space-size and --control-stack-size in the executable core,
2472 causing it to skip normal runtime option processing. See documentation
2473 for details. (thanks to Zach Beane)
2474 * enhancement: inoccous calls to EVAL or generic functions dispatching
2475 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2476 * enhancement: the system no longer resignals errors from --load and
2477 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2478 associated with the original error to be lost. (thanks to Ariel
2480 * enhancement: :DONT-SAVE keyword argument has been added to
2481 LOAD-SHARED-OBJECT for controlling interaction with
2482 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2483 the effects of an earlier LOAD-SHARED-OBJECT call.
2484 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2485 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2486 provided. (reported by Cedric St-Jean)
2487 * bug fix: circularity handling in the reader did not treat raw
2488 structure slots correctly. (reported by Cedric St-Jean)
2489 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2490 file descriptors when there were none.
2491 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2492 was broken. (reporteed by Willem Broekema)
2493 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2494 pathnames without a directory.
2495 * bug fix: COMPILE-FILE did not warn about undefined variable
2496 references at toplevel, and LOAD of the resulting fasl did
2497 not signal an error.
2498 * bug fix: functions with non-required arguments used to end up with
2499 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2500 * bug fix: redefining a function with non-required arguments didn't
2501 update the system's knowledge about its call signature properly.
2502 * bug fix: fixed #431; incompatible alien record type redefinitions
2503 are detected and handled. (reported by Neil Haven)
2504 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2505 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2507 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2508 after alien stack frames.
2509 * bug fix: strings passed to mk{s,d}temp lacked null termination
2511 changes in sbcl-1.0.21 relative to 1.0.20:
2512 * new feature: the compiler is able to track the effective type of a
2513 generic function across method addition and removal.
2514 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2515 appropriately typed structure slots without locking.
2516 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2517 information like those gathered by TIME using a programming-friendly
2519 * new feature: TIME reports time taken even if the form performs a
2520 non-local transfer of control.
2521 * enhancement: reduced conservativism on GENCGC platforms: on
2522 average 45% less pages pinned (measured from SBCL self build).
2523 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2524 mutate constant symbols or violate declaimed type of the symbol.
2525 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2526 sleeping on the semaphore in heavily contested semaphores.
2527 * bug fix: semaphores and condition variables were not interrupt
2529 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2530 owned by other threads anymore.
2531 * bug fix: FIND on lists called KEY outside the specified
2532 subsequence. (reported by budden)
2533 * bug fix: LOG doesn't use single-float intermediate results when
2534 given mixed integer and double-float arguments, leading to better
2535 precision. (reported by Bob Felts)
2536 * bug fix: LOG with base zero returned values of inconsistent type.
2538 changes in sbcl-1.0.20 relative to 1.0.19:
2539 * minor incompatible change: OPTIMIZE qualities
2540 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2541 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2542 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2543 * documentation: some slot access efficiency guidelines have been
2544 added to the user manual.
2545 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2546 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2547 as ASSOC and MEMEBER.
2548 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2549 to more efficient EQ-comparison versions more often.
2550 * optimization: enhanced derivation of DOLIST iteration variable type
2552 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2554 * optimization: runtime lookup of function definitions can be
2555 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2556 * optimization: compiler is able to derive the return type of
2557 (AREF (THE STRING X) Y) as being CHARACTER.
2558 * optimization: CLRHASH on empty hash-tables no longer does pointless
2559 work. (thanks to Alec Berryman)
2560 * optimization: REPLACE deftransforms don't punt when :START1 or
2562 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2563 no longer emits a code deletion note. (reported by Andrew
2565 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2566 functions with an odd number of &OPTIONAL arguments, a &REST
2567 argument, and one or more &KEY arguments at the call site.
2568 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2569 arguments appeared at call sites as well.
2570 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2571 READ-LINE &co can no longer read from them afterwards. (reported
2573 * bug fix: fixed #427: unused local aliens no longer cause compiler
2574 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2576 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2577 alien-stack leakage. (reported by Andy Hefner)
2578 * bug fix: PROGV signals an error when an attempt to violate declared
2579 type of a variable or bind a constant is made.
2580 * bug fix: SET signals an error when an attempt to violate declared
2581 type of a variable is made.
2582 * bug fix: restart computation during the execution of a restart
2583 test function no longer causes infinite recursion. (reported by
2585 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2586 signals an error. (thanks to Pierre Mai)
2587 * bug fix: EXPORT left symbol unexported in conflict situations.
2588 (thanks to Michael Weber)
2589 * bug fix: correctly handle name conflicts involving CL:NIL.
2590 (thanks to Michael Weber)
2591 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2592 conflicts arising from USEing package with conflicting symbols
2593 correctly. (thanks to Michael Weber)
2595 changes in sbcl-1.0.19 relative to 1.0.18:
2596 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2597 warnings that go otherwise unhandled will be muffled if they are
2598 of the type that's the value of this variable.
2599 * optimization: stack allocation is slightly more efficient on x86
2601 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2602 where a raw slot always is initialized using the initform whose
2603 type is not know sufficiently well a compile-time are now compiled
2604 correctly. (reported by John Morrison)
2605 * bug fix: compiler no longer makes erronous assumptions in the
2606 presence of non-foldable SATISFIES types.
2607 * bug fix: stack analysis missed cleanups of dynamic-extent
2608 arguments in non-let-converted calls to local functions.
2609 * improvements to the Windows port:
2610 ** adjusted address spaces for building on both Win32 and
2611 Win64. (thanks for John Connors)
2612 * fixed some bugs revealed by Paul Dietz' test suite:
2613 ** interval arithmetic during type derivation used inexact integer
2614 to single-float coercions.
2615 ** arithmetic operations involving large integers and single
2616 floats give the same results in compiled and interpreted code.
2617 ** deriving the result type of COERCE no longer signals an error
2618 if the derived type of the second argument is a MEMBER type
2619 containing invalid type specifiers.
2620 ** ADJOIN with constant NIL as second argument works correctly.
2621 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2623 changes in sbcl-1.0.18 relative to 1.0.17:
2624 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2625 profiles only the current thread.
2626 * minor incompatible change: changes to SYMBOL-VALUE of constants
2627 defined with DEFCONSTANT now signal an error.
2628 * enhancement: SB-SPROF now has support for wallclock profiling,
2629 and is also able to profile specific threads. REPORT output
2630 has also additional sorting options.
2631 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2633 * optimization: structure allocation has been improved
2634 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2635 ** out of line constructors are ~10% faster.
2636 ** inline constructors are ~15% faster.
2637 ** inline constructors are capable of dynamic extent allocation
2638 (generally on x86 and x86-64, in some cases on other platforms
2640 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2642 * optimization: file compiler is now able to coalesce non-circular
2643 lists, non-base strings, and bit-vectors. Additionally, constants
2644 are never referenced through SYMBOL-VALUE at runtime.
2645 * optimization: code defining methods on PRINT-OBJECT (and other
2646 generic functions in the COMMON-LISP package) now loads faster.
2647 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2649 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2650 fasl is now deleted. (reported by Attila Lendvai)
2651 * bug fix: READ-LINE always returned NIL for the last line in files.
2652 (reported by Yoshinori Tahara)
2653 * bug fix: more accurate disassembly annotations of foreign function
2654 calls. (thanks to Andy Hefner)
2655 * bug fix: trimming non-simple strings and non-string string
2656 designators when the there is nothing to trim works properly.
2657 (thanks to James Knight)
2658 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2659 (thanks to Travis Cross)
2660 * fixed some bugs revealed by Paul Dietz' test suite:
2661 ** NIL is a valid function name (regression at 1.0.13.38)
2662 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2663 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2664 fill pointers properly (regression at 1.0.12.23)
2665 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2666 displacement indices properly (regression at 1.0.12.23)
2668 changes in sbcl-1.0.17 relative to 1.0.16:
2669 * temporary regression: user code can no longer allocate closure
2670 variable storage on stack, due to bug 419 without explicitly
2671 requesting it. Please consult sbcl-devel for advice if you need to
2672 use this feature in the meanwhile.
2673 * new feature: runtime argument --control-stack-size can be used to
2674 adjust thread default control stack size.
2675 * enhancement: improved TIME output
2676 ** all times are reported using the measured accuracy (milliseconds
2677 for real and GC times, microseconds for everything else.)
2678 ** processor cycle counts on x86 and x86-64.
2679 ** interpreted forms are counted for both evaluator modes.
2680 ** number of lambdas converted by the compiler is reported.
2681 ** CPU percentage report (computed from real and total run time.)
2682 ** more comprehensive run time reporting, using a condenced format
2683 ** interperted form, lambda, and page fault counts are omitted
2685 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2687 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2688 * optimization: two argument forms of LAST are upto ~10% faster
2689 in normal SPEED policies.
2690 * optimization: NCONC no longer needs to heap cons its &REST list
2691 in normal SPEED policies.
2692 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2693 to Sidney Markowitz)
2694 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2695 regression since 1.0.9.1. (thanks to Eric Marsden)
2696 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2697 since 1.0.15.36. (thanks to Paul Khuong)
2698 * bug fix: LAST when always returned the whole list when given a bignum
2699 as the second argument.
2700 * bug fix: dynamic extent allocation of nested lists and vectors
2701 could leak to otherwise accessible parts.
2702 * bug fix: invalid optimization of heap-allocated alien variable
2704 * bug fix: fasl header checking is less vulnerable to different
2705 platform word lengths.
2706 * bug fix: more correct assembler syntax for GNU binutils
2707 2.18.50.0.4 support. (thanks to Marijn Schouten)
2708 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2710 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2711 declarations) successfully. (reported by Attila Lendvai)
2713 changes in sbcl-1.0.16 relative to 1.0.15:
2714 * minor incompatible change: revert the changes to sb-posix's error
2715 signaling added in 1.0.14.
2716 * minor incompatible change: change PROBE-FILE back to returning
2717 NIL whenever we can't get a truename, as was the case before 1.0.14.
2718 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2719 inherits from ERROR instead of just CONDITION.
2720 * new feature: SB-INTROSPECT can provide source locations for instances
2721 as well. (thanks to Tobias Rittweiler)
2722 * optimization: binding special variables now generates smaller code
2723 on threaded platforms.
2724 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2725 and cases where no :TEST is given but the compiler can infer that
2726 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2727 * optimization: better LOGNOT on fixnums.
2728 * optimization: modular arithmetic for a particular requested width
2729 is implemented using a tagged representation unless a better
2730 representation is available.
2731 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2732 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2733 for wellformedness and returns a specialized vector. (reported by
2734 Francois-Rene Rideau)
2735 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2736 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2737 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2738 unscheduling timer at the same time as another timer fires.
2739 * bug fix: don't reschedule timers for dead threads.
2740 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2741 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2742 bogus errors if select() was interrupted.
2743 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2745 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2746 * enhancement: cleaner backtraces for interactive interrupts, as
2747 well as other cases where the interesting frames used to be
2748 obscured by interrupt handling frames.
2749 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2750 now supported, and tracing a whole package using (TRACE "FOO") now
2751 traces SETF-functions as well.
2752 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2753 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2754 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2755 * unreadably printed representation of hash-tables now includes
2757 * bug fix: partially fixed #188: type propagation from assignments
2758 is now more efficient.
2759 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2760 'DOUBLE-FLOAT) are not flushable.
2761 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2762 full address of the object, and none of the tag bits.
2763 * bug fix: readably printing hash-tables now respects other printer
2764 control variables. (reported by Cedric St-Jean)
2765 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2766 keyword with MAKE-HASH-TABLE.
2767 * bug fix: export SB-POSIX:MKSTEMP.
2768 * bug fix: SORT was not interrupt safe.
2769 * bug fix: XREF accounts for the last node of each basic-block as
2771 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2772 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2773 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2774 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2775 create obsolete instances in the case of redefinition or
2776 obsoletion of a superclass. (thanks to Andy Hefner)
2777 * bug fix: Support for the Alpha architecture has been revived; it had
2778 suffered somewhat from lack of maintenance since sbcl-1.0.
2779 * improvements to the Windows port:
2780 ** The system detects the codepage to use at startup, instead of
2781 using the value from the saved core. (thanks to Kei Suzuki)
2783 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2784 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2785 (see documentation for details.)
2786 * revived support for OpenBSD (contributed by Josh Elsasser)
2787 * partially fixed bug #108: ROOM no longer suffers from occasional
2788 (AVER (SAP= CURRENT END)) failures.
2789 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2790 bodies no longer cause a WARNING to be signalled. (reported by
2792 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2793 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2794 the bug in TRUNCATE.) (reported by Michael Weber)
2795 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2796 no samples. (reported by Andy Hefner)
2797 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2798 no longer appear as (NIL ...) frames in backtraces.
2799 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2800 is now actually exported from SB-EXT as documented. (reported by
2802 * bug fix: sb-aclrepl now correctly understands how to inspect
2803 single-floats on 64-bit platforms where single-floats are not boxed.
2804 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2805 yet been finalized. (reported by Levente Meszaros)
2806 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2807 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2808 SBCL-specific optimize qualities.
2810 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2811 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2812 an executable in the search path, and does so in the child
2813 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2814 been removed; it can be found in the CVS history, for somebody who
2815 needs that search behavior (see the manual).
2816 * minor incompatible change: compiler policy re. weakening type
2817 checks has changed: now type checks are weakened only if SAFETY < 2
2819 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2820 unparsing of directory pathnames as files. Analogously,
2821 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2822 filename to parse into a directory pathname.
2823 * enhancement: implicit generic function creation now signals a
2824 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2825 users can bind handlers for and muffle around calls to LOAD.
2826 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2827 to be used (using the default stream external format), and allows
2828 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2829 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2830 strings and vectors whose element-type or simplicity is not fully
2831 known at compile-time.
2832 * optimization: STRING-TRIM and related functions no longer allocate
2833 a new string when no trimming needs to be performed. These functions
2834 are also faster than before when the input string has been declared
2836 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2837 * optimization: READ-LINE is significantly faster for files containing
2839 * optimization: non-open coded uses of character comparison operators
2840 (e.g. char=) no longer cons when called with more than one parameter
2841 on platforms supporting dynamic-extent allocation.
2842 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2843 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2844 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2846 * bug fix: some sequence functions elided bounds checking when
2848 * bug fix: too liberal weakening of union-type checks when SPEED >
2850 * bug fix: more bogus fixnum declarations in ROOM implementation
2853 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2854 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2855 :SYNCHRONIZED argument, which makes the hash-table safe for
2856 concurrent accesses (but not iteration.) See also:
2857 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2858 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2859 * optimization: CONCATENATE on strings is an order of magnitude faster
2860 in code compiled with (> SPEED SPACE).
2861 * optimization: SUBSEQ is ~50% faster on lists.
2862 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2863 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2864 END is smaller then START.
2865 * bug fix: SB-PROFILE will no longer report extra consing for nested
2866 calls to profiled functions.
2867 * bug fix: ROOM implementation had bogus fixnum declarations which
2868 could cause type-errors when calling ROOM on large images.
2869 * bug fix: if file compilation is aborted, the partial fasl is now
2870 deleted, and COMPILE-FILE returns NIL as the primary value.
2871 * bug fix: number of thread safety issues relating to SBCL's internal
2872 hash-table usage have been fixed.
2873 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2874 be returned from its body when the values were being returned
2875 using unknown-values return convection and the W-P-O was wrapped
2876 inside an UNWIND-PROTECT.
2877 * bug fix: sb-posix should now compile again under Windows, enabling
2878 slime to work again.
2880 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2881 * incompatible change: hash-table accessor functions are no longer
2882 automatically protected by locks. Concurrent accesses on the same hash-table
2883 from multiple threads can give inconsistent results or even corrupt the
2884 hash-table completely. Multi-threaded applications should do their own
2885 locking at the correct granularity. In the current implementation it is
2886 still safe to have multiple readers access the same table, but it's not
2887 guaranteed that this property will be maintained in future releases.
2888 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2889 and will signal an error at runtime.
2890 * enhancement: SB-THREAD package now exports a semaphore interface.
2891 * enhancement: CONS can now stack-allocate on x86 and
2892 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2894 * enhancement: nested lists can now be stack allocated on
2895 platforms providing stack allocation support.
2896 * enhancement: dynamic-extent support has been extended to support
2897 cases where there are multiple possible sources for the stack
2899 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2900 if the mutex is uncontested on Linux.
2901 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2902 as specified by the CLHS. (thanks to Tobias Rittweiler)
2903 * bug fix: NaN comparison now works on x86-64.
2904 * bug fix: CLOSE :ABORT T on a stream with pending output now
2906 * bug fix: instances of non-standard metaclasses using standard
2907 instance structure protocol sometimes missed the slot type checks
2909 * bug fix: known functions can be inlined in high-debug code.
2911 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2912 * minor incompatible change: the MSI installer on Windows no longer
2913 associates .lisp and .fasl files with the installed SBCL.
2914 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2915 on Windows. (thanks to Luis Oliviera)
2916 * new feature: SB-CLTL2 contrib module now implements
2917 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2918 * optimization: scavenging weak pointers is now more efficient,
2919 requiring O(1) instead of O(N) per weak pointer to identify
2920 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2921 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2922 method bodies using constant slot-names when the first argument is
2923 a specializer parameter for the method.
2924 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2925 names, when the class of the instance is a direct instance
2926 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2927 as slow as the constant slot-name case.)
2928 * optimization: member type construction is now O(N) instead
2930 * optimization: UNION and NUNION are now O(N+M) for large
2931 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2933 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2934 now more readable in environments like Slime which display it.
2935 (thanks to Tobias C. Rittweiler)
2936 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2937 was able to infer the correct argument type for the object on which
2938 the CAS operation was being performed.
2939 * bug fix: copy propagation interfered with parallel assignment
2940 semantics in local calls. (reported by Paul Khuong)
2941 * bug fix: the signed modular fixnum shift compiled to wrong code on
2942 x86 and x86-64. (spotted by a slight modification to some of
2945 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2946 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2947 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2948 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2950 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2951 and generic function now print the object identity for anonymous
2952 instances. (thanks to Attila Lendvai)
2953 * enhancement: as an extension to MOP, SBCL now supports SETF of
2954 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2955 (thanks to Attila Lendvai)
2956 * enhancement: sb-cover has an alternate annotation mode which puts
2957 the form annotations at the car of the form, instead of annotating
2958 it completely. The benefit of this mode is that it shows better
2959 which forms were instrumented by the compiler.
2960 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2961 by printer control variables. (reported by Dan Corkill)
2962 * bug fix: system leaked memory when delayed output was performed by
2963 the OS in smaller chunks then expected. (thanks to David Smith)
2964 * bug fix: system leaked memory when file streams were not closed
2966 * bug fix: large objects written to slow streams that were modified
2967 after the write could end up with the modified state written to
2968 the underlying file descriptor.
2969 * bug fix: multiple threads operating in parallel on the same stream
2970 could cause buffer-overflows.
2971 * bug fix: source location information is stored correctly
2972 (broken since 1.0.6). This bug would generally show up as the
2973 Slime debugger highlighting the wrong form when the sldb-show-source
2975 * bug fix: Branch forms are again annotated as branches in the sb-cover
2977 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2978 on x86-64. (reported by Gregory Vanuxem)
2979 * bug fix: EQUALP could return wrong results for structures with raw
2980 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2981 word). (reported by Vjacheslav Fyodorov)
2982 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2985 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2986 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2987 atomic compare-and-swap operations on threaded platforms.
2988 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2989 allows assigning a global minimum value to optimization qualities
2990 (overriding proclamations and declarations).
2991 * enhancement: closed over variables can be stack-allocated on x86
2993 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2995 * optimization: slot definition lookup is now O(1). This speeds up
2996 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2997 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2998 * optimization: ASSOC and MEMBER can now be open-coded for all
2999 combinations of keyword arguments when second argument is constant
3000 and SPEED >= SPACE. In other cases a specialized version is
3002 * bug fix: using obsoleted structure instances with TYPEP and
3003 generic functions now signals a sensible error.
3004 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3005 (reported by Kristoffer Kvello)
3006 * bug fix: backtrace construction is now more careful when making
3007 lisp-objects from pointers on the stack, to avoid creating bogus
3008 objects that can be seen by the GC.
3009 * bug fix: defaulting of values in contexts expecting more than 7
3010 variables now works on x86-64. (reported by Christopher Laux)
3011 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3013 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3014 as the property-list of a symbol.
3015 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3016 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3017 situations requested, are once again file-compileable. (reported
3020 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3021 * MOP improvement: support for user-defined subclasses of
3022 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3023 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3024 the expansion of DEFMETHOD, is responsible for generating a form
3025 which creates a list of specializers when evaluated. Additional
3026 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3027 debugging and introspective support.
3028 * minor incompatible change: the (unsupported) spinlock interface
3029 has changed: free spinlock now has the value NIL, and a held spinlock
3030 has the owning thread as its value.
3031 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3032 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3034 * enhancement: name of a socket-stream is now "a socket" instead of
3035 "a constant string".
3036 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3037 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3038 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3039 for generic functions. (Thanks to Tobias C. Rittweiler)
3040 * optimization: bignum printing speed has been improved by 20-40%
3041 (depending on the bignum size.)
3042 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3044 * bug fix: the cache used by the CLOS to store precomputed effective
3045 methods, slot offsets, and constant return values is now thread and
3047 * bug fix: generic function dispatch function updating is now thread
3048 and interrupt safe (in the sense that the known issues have been
3050 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3051 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3052 * bug fix: asdf systems with dependencies to the SB-POSIX or
3053 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3054 * bug fix: interrupt safety of applicable method computation has been
3057 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3058 * new contrib: sb-cover, an experimental code coverage tool, is included
3059 as a contrib module.
3060 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3061 significantly faster.
3062 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3063 produce more efficient code on x86-64 if the compiler can determine
3064 that (+ INDEX <constant>) does not require a bounds check and FOO
3065 has an element type at least 8 bits wide.
3066 * enhancement: a new, experimental synchronous timeout facility is
3067 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3068 * enhancement: when a symbol name conflict error arises, the
3069 conflicting symbols are always printed with a package prefix.
3070 (thanks to Kevin Reid)
3071 * enhancement: stepping is now once again supported on the SPARC and
3072 MIPS platforms. (It is also now more likely to work on CheneyGC
3074 * enhancement: sb-sprof can now also track and report accurate call
3076 * bug fixes: the treatment of non-standard subclasses of
3077 SB-MOP:SPECIALIZER is more correct.
3078 * incompatible change: PURIFY no longer copies the data from the
3079 dynamic space into the static and read-only spaces on platforms
3080 that use the generational garbage collector
3081 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3083 * bug fix: GC race condition occasionally resulting in crashes with
3084 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3086 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3088 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3089 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3090 * bug fix: an asynchronous interrupt could previously leave the
3091 system running with GC inhibited.
3092 * bug fix: a DECLARE form evaluated at top-level now causes an error
3093 rather than silently (or verbosely) returning NIL.
3094 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3095 result in a error being signalled due to source form lookup errors.
3096 (reported by Peter Graves)
3098 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3099 * incompatible change: removed writer methods for host-ent-name,
3100 host-ent-addresses -- changing the values did not update the DNS
3102 * minor incompatible change: changed experimental JOIN-THREAD interface
3103 * documentation: the manual now lists reader and writer methods
3104 in class slot documentation sections. (thanks to Richard M Kreuter)
3105 * documentation: unwinding from asyncronous events has been
3106 documented as unsafe.
3107 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3108 in multithreaded application code.
3109 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3110 platforms. (thanks to James Anderson for the optimization hint)
3111 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3113 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3114 variants no longer cons.
3115 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3116 their NOT- variants no longer cons.
3117 * optimization: EQUAL hash tables no longer use SXHASH for objects
3118 of all data types, but instead use an EQL hash for types for which
3119 EQUAL is the same as EQL.
3120 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3121 are significantly faster.
3122 * optimization: new STRING-OUTPUT-STREAM implementation is much
3123 faster for large outputs and conses 30% less on average.
3124 * enhancement: XREF information is now collected for references made
3125 to global variables using SYMBOL-VALUE and a constant argument.
3126 * enhancement: SIGINT now causes a specific condition
3127 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3128 * bug fix: FILE-POSITION used to signal an error in some cases where
3129 ANSI requires it to return NIL.
3130 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3131 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3132 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3134 * bug fix: bad type declaration in the CLOS implementation has
3135 been fixed. (reported by James Anderson)
3136 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3137 (thanks to Lutz Euler)
3138 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3139 required by the CLHS. (reported by Samium Gromoff)
3140 * bug fix: dead unbound variable references now signal an error.
3141 (reported by Marco Monteiro)
3142 * bug fix: / with an unused value was being deleted in safe code.
3143 (thanks to Marco Monteiro and Kevin Reid)
3144 * bug fix: number of characters that can be written onto a single
3145 line in a file is unlimited.
3146 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3147 been fixed by inhibiting interrupts for when GC is disabled.
3148 * bug fix: some interrupt safety issues with GETHASH, (SETF
3149 GETHASH), CLRHASH and REMHASH have been fixed.
3150 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3151 specifier no longer causes infinite recursion.
3152 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3153 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3154 * bug fix: an &environment argument with the correct variable information
3155 is passed to macros that are expanded during byte compilation.
3156 (reported by Samium Gromoff)
3157 * bug fix: a logic error was causing the hash function for bignums to
3158 have excessive amounts of collisions. (reported by Faré Rideau)
3159 * bug fix: modifying the contents of an array could change the return
3160 value of SXHASH on that array, which is only allowed for strings
3161 and bit vectors. (bug introduced in 0.9.16)
3162 * improvement: the x86-64/darwin port now passes all tests (except
3163 for the debugger tests) but should still be considered
3164 experimental until this is fixed.
3165 * improvement: a style-warning is signaled for CASE (etc) clauses with
3166 duplicate keys. (thanks to Kevin Reid)
3167 * improvement: macos/x86 and macos/x86-64 now use mach exception
3168 handlers for dealing with illegal instructions (for trapping and
3169 error handling) and memory protection violations (for GC).
3171 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3172 * new platform: experimental support for x86-64/darwin (MacOS).
3173 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3174 and getnameinfo sockets functions are used instead of gethostbyaddr
3175 and gethostbyname, on platforms where the newer functions are available.
3176 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3178 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3179 don't print the startup banner, but behave as if --noinform was passed
3180 as a command line argument. (thanks to Kevin Reid)
3181 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3182 * optimization: code using alien values with undeclared types is much faster.
3183 * optimization: the compiler is now able to open code SEARCH in more cases.
3184 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3185 * bug fix: using standardized COMMON-LISP special variables as loop
3186 variables no longer signals bogus package lock violations. (reported
3188 * bug fix: declaring local loop variables to be of a range-limited type
3189 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3190 (reported by Andras Simon)
3191 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3192 bugs remain on x86-64.)
3193 * bug fix: the #= and ## reader macros now interact reasonably with
3194 funcallable instances.
3195 * bug fix: type-checks for function arguments were compiled using the
3196 compiler policy settings of the wrong lexical environment (in 1.0.2
3198 * bug fix: SHADOW accepts characters as string designators, as required
3199 by the spec (thanks to Eric Marsden)
3200 * bug fix: fixed GC safety issues when foreign functions are called with
3201 non-base strings as arguments
3202 * bug fix: more consistent error output for fatal-compiler-warnings, like
3204 * bug fix: functions with proper names were showing up as NIL in
3205 backtraces (reported by Edi Weitz, regression in 1.0.2)
3207 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3208 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3209 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3210 produce more efficient code on the x86 if the compiler can determine
3211 that (+ INDEX <constant>) does not require a bounds check and FOO
3212 has an element type at least 8 bits wide.
3213 * bug fix: references to undefined variables are handled the same way
3214 in toplevel forms as in the normal compiler
3215 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3217 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3218 (thanks to Jon Buller)
3219 * improvement: faster compilation times for complex functions
3220 * improvement: added readlink support to SB-POSIX (thanks to Richard
3223 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3224 * improvement: experimental support for mach exception handling on
3225 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3227 * improvement: support for GBK external format.
3228 (thanks to Chun Tian (binghe))
3229 * improvement: the debugger now displays variables that have been closed
3230 over, in code compiled with (DEBUG 2) or higher
3231 * improvement: support for executable cores on NetBSD (thanks to
3233 * new feature: added a RESTART-FRAME debugger command
3234 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3235 be used to provide an implementation for FILE-POSITION on Gray streams
3236 (thanks to Eric Marsden)
3237 * new feature: add syslog, openlog and closelog support to SB-POSIX
3238 (thanks to Richard Kreuter)
3239 * optimization: the function call overhead in code compiled with
3240 a high DEBUG optimization setting is significantly
3241 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3242 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3243 (thanks to Tony Martinez)
3244 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3245 evaluated once (reported by Kevin Reid)
3246 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3247 works again (thanks to Kilian Sprotte)
3248 * bug fix: an error is signaled for tagbodies with duplicate tags
3249 (thanks to Stephen Wilson)
3250 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3251 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3252 stack frames from alien callbacks.
3253 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3254 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3255 65k pages (thanks to David Woodhouse)
3256 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3258 changes in sbcl-1.0.1 relative to sbcl-1.0:
3259 * new platform: FreeBSD/x86-64, including support for threading.
3260 * new feature: the compiler stores cross-referencing information
3261 about function calls (who-calls), macroexpansion (who-macroexpands)
3262 and special variables (who-binds, who-sets, who-references) for code
3263 compiled with (< SPACE 3). This information is available through the
3264 sb-introspect contrib.
3265 * new feature: users may subclass SEQUENCE, and have instances of
3266 these classes interoperate with standard Common Lisp functions if
3267 a number of methods are defined. (This feature is experimental
3268 and the interface subject to change based on feedback from SBCL
3269 users and the general community)
3270 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3271 x86/x86-64, rather than the previous fixed depth of 8
3272 * improvement: another pthread back-end of mutex "pthread-futex".
3273 * bug fix: non-ascii command-line arguments are processed correctly
3274 (thanks to Yaroslav Kavenchuk)
3275 * bug fix: non-required arguments were not passed correctly when a method
3276 defined using DEFMETHOD was called from a mop-generated method using
3277 CALL-NEXT-METHOD (reported by Pascal Costanza)
3278 * bug fix: recursion is now permitted in accessors through
3279 SLOT-UNBOUND. (reported by Pascal Costanza)
3280 * bug fix: an error was signaled at startup if the HOME environment
3281 variable was defined, but had an empty value (reported by Peter Van Eynde)
3282 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3283 signal a PROGRAM-ERROR, not a BUG.
3284 * bug fix: SB-POSIX:READDIR works when built with large file support.
3285 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3287 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3288 for better automatic indentation support. (thanks to Matt Pillsbury)
3289 * optimization: loading generic functions no longer takes O(n^2) time,
3290 proportional to the amount of methods in the generic function
3291 (reported by Todd Sabin and Jeremy Brown)
3292 * optimization: the FIND and POSITION family of sequence functions
3293 are significantly faster on arrays whose element types have been
3295 * improvements to the Windows port:
3296 ** Intermittent heap corruption problems have been fixed. (thanks
3297 to Alastair Bridgewater)
3298 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3300 ** Lisp is able to unwind foreign exception frames from alien
3301 callbacks. (thanks to Alastair Bridgewater)
3303 changes in sbcl-1.0 relative to sbcl-0.9.18:
3304 * improvement: experimental support for threading on FreeBSD/x86.
3305 (thanks to NIIMI Satoshi)
3306 * improvement: runtime option --dynamic-space-size can be used
3307 to set the size of the dynamic space reserved on startup.
3308 * improvement: floating point modes in effect are now saved in
3309 core, and restored on startup.
3310 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3311 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3312 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3313 threads are not running after *SAVE-HOOKS* have run.
3314 * improvement: writes to CLOS instance slots are type-checked in code
3315 compiled with (SAFETY 3)
3316 * improvement: floating-point exception handling on FreeBSD (thanks to
3318 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3319 (thanks to Zach Beane)
3320 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3322 * improvement: added support for the Shift-JIS external format.
3323 (contributed by NIIMI Satoshi)
3324 * improvement: callbacks are supported on Linux/PPC. (thanks to
3326 * bug fix: compiler bug triggered by a (non-standard) VALUES
3327 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3328 * bug fix: file compiler no longer confuses validated and already
3329 dumped structurres. (reported by Kaersten Poeck)
3330 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3331 fill-pointer signals a type-error as required. (thanks to
3333 * bug fix: disassemly of funcallable instances works.
3334 * bug fix: single stepping on PPC.
3335 * bug fix: fix thread-safety problems in the type system (generally
3336 manifesting as nonsensical errors like "STRING is a bad type specifier
3337 for sequences" or "The value 1 is not of type FIXNUM")
3338 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3339 (reported by Josip Gracin)
3340 * bug fix: an error is signaled for attempts to displace arrays with
3341 incompatible element types (thanks to Mario Mommer)
3342 * bug fix: more correct handling of wide characters in debug info
3343 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3344 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3345 and don't cause extra consing
3346 * optimization: MAP and MAP-INTO are significantly faster on vectors
3347 whose elements types have been declared.
3348 * Improvements to SB-SPROF:
3349 ** Support for allocation profiling
3350 ** Reduced profiling overhead, especially for long profiling runs
3351 * Improvements to the Windows port:
3352 ** floating point exceptions are now reported correctly.
3353 ** stack exhaustion detection works partially.
3354 ** more accurate GET-INTERNAL-REAL-TIME.
3355 ** better RUN-PROGRAM behaviour in case of errors in the child
3357 ** PROBE-FILE now simplifies pathnames correctly.
3358 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3359 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3360 1st 1970 (although time timezone data will be unreliable).
3361 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3363 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3364 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3365 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3367 * bug fix: two potential GC deadlocks affecting threaded builds.
3368 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3369 returns T (reported by Anton Kazennikov)
3370 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3371 with non-variable places
3372 * bug fix: remove a race condition in the setting of
3373 funcallable-instance functions, this should make threaded CLOS
3374 code more stable against memory faults.
3375 * bug fix: corruption of specials when unbinding is interrupted by an
3376 asynchronous unwind (reported by Hannu Koivisto)
3377 * improvement: the debugger will now also display local variables that
3378 are only used once, for code compiled with a DEBUG optimization quality
3381 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3382 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3383 * incompatible change: External-format support for FFI calls. The
3384 SB-ALIEN:C-STRING no longer implies an ASCII
3385 external-format. Instead the string is subject to external-format
3386 conversion. Additionally return values of type SB-ALIEN:C-STRING
3387 are by default of type (SIMPLE-ARRAY CHARACTER), not
3388 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3389 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3390 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3391 * incompatible change: SB-EXT package no longer contains the
3392 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3393 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3395 * incompatible change: the single-stepper is no longer available
3396 on Alpha, Mips and Sparc platforms.
3397 * minor incompatible change: the direct superclasses of
3398 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3399 not (STANDARD-OBJECT FUNCTION). This makes the
3400 class-precedence-lists of GENERIC-FUNCTION and
3401 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3403 * minor incompatible change: the default stream external format on
3404 non-unicode SBCL is no longer detected from the locale, but is always
3406 * new feature: Add a version of evaluator that uses an interpreter instead
3407 of the compiler. EVAL still uses the compiler by default, to switch it
3408 to use the interpreter, set the value of the variable
3409 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3410 * minor incompatible change: the single-stepper REPL has been merged
3411 with the normal debugger (see the "Stepping" heading of the debugger help
3412 for more details). The debugger command STEP will no longer switch
3413 to the single-stepper REPL.
3414 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3415 for a type now works.
3416 * bug fix: loading of default sysinit file works. (thanks to Leonid
3418 * bug fix: better detection of circularities in the file-compiler.
3419 (reported by Marco Monteiro)
3420 * bug fix: the CL pathname functions now work with files that have
3421 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3422 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3423 systems with Unix98 pty semantics.
3424 * bug fix: ASDF-INSTALL will now work with bsd tar.
3425 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3427 * bug fix: timers expiring in dead threads no longer cause a
3428 type-error (reported by Paul "Nonny Mouse").
3429 * bug fix: thanks to more lightweight single-stepper instrumentation,
3430 code compiled with (DEBUG 3) will compile and execute significantly faster,
3431 and will have more accurate type-inferencing than before
3432 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3433 whose bindings are modified
3434 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3435 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3436 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3437 CL:SOFTWARE-VERSION with proper version
3439 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3440 * feature: implemented the READER-METHOD-CLASS and
3441 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3442 as specified by AMOP.
3443 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3445 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3446 (thanks to Lutz Euler)
3447 * optimization: hashing of general arrays and vectors has been
3448 improved. (reported by Any Fingerhut)
3449 * enhancement: SB-INTROSPECT is now able to find definitions of
3450 profiled functions. (thanks to Troels Henriksen)
3451 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3452 as well, allowing compiler-macros for SETF-functions to expand.
3453 * enhancement: step-instrumentation no longer wraps known
3454 single-value functions with multiple-value context, allowing
3455 better type inference.
3456 * fixed bug #337: use of MAKE-METHOD in method combination now works
3457 even in the presence of user-defined method classes. (reported by
3458 Bruno Haible and Pascal Costanza)
3459 * fixed bug #339(c): if there are applicable methods not part of any
3460 long-form method-combination group, call INVALID-METHOD-ERROR.
3461 (reported by Bruno Haible)
3462 * fixed bug #361: the :FUNCTION initarg in the protocol for
3463 initialization of methods can now be used to override
3464 internally-produced optimized functions. (reported by Bruno
3466 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3467 system-provided lambda expression no longer cause warnings about
3468 unbound #:|pv-table| symbols.
3469 * bug fix: improved the handling of type declarations and the
3470 detection of violations for keyword arguments with non-constant
3472 * bug fix: potentially erronous calls to PATHNAME and
3473 MERGE-PATHNAMES were being flushed in some cases.
3474 (reported by Richard Kreuter)
3475 * bug fix: compiled calls to TYPEP were mishandling obsolete
3476 instances. (reported by James Bielman and Attila Lendvai)
3477 * bug fix: format strings with ~> without matching ~< no longer
3478 trigger an AVER, but signal an understandable error instead.
3479 (reported by Antonio Martinez)
3480 * bug fix: specifying an output-file without a pathname-type for
3481 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3482 of input-file instead of "fasl". (reported by Robert Dodier)
3483 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3484 (reported by James Y Knight).
3485 * bug fix: compiler-macros-function did not consider the environment
3486 argument for shadowing by local functions.
3487 * bug fix: compiler-macros expansion was inhibited by local INLINE
3489 * bug fix: inline expansions of known functions were subject to
3490 step-instrumentation in high debug policies, leading to problems
3491 with type-inference.
3492 * bug fix: compiler failed to differentiate between different CONS
3493 types in some cases.
3494 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3495 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3496 * bug fix: #368: incorrect use of expressed vs. upgraded array
3498 * bug fix: #306a: more precise unions of array types.
3499 * thread-safety improvements:
3500 ** CONDITION-WAIT could return early on Linux, if the thread was
3501 interrupted and subsequently continued with SIGCONT.
3502 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3504 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3505 * added support for the ucs-2 external format. (contributed by Ivan
3507 * minor incompatible change: pretty printing of objects of type
3508 (cons symbol) is, in the default pprint-dispatch-table, now
3509 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3511 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3512 called later in a class's lifetime, possibly as late as when the
3513 first instance of the class is created. Previously,
3514 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3515 class became finalizeable.
3516 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3517 for multibyte external-format streams. (thanks to "vbzoli")
3518 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3519 with :ALLOCATION :CLASS inherited from superclasses of the
3521 * fixed bug: anonymous classes can now be created using the :NAME
3522 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3523 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3524 * fixed bug: core-files saved with :EXECUTABLE T can again be
3525 executed when SBCL_HOME isn't set. (reported by James Knight)
3526 * fixed bug: toplevel LOCALLY forms with declarations could
3527 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3528 * fixed bug: printing from several different threads using different
3529 values of *print-case* could cause invalid output, due to
3530 some internal special variables of the printer not being bound
3531 thread-locally (reported by Max Mikhanosha)
3532 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3533 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3534 (reported by Pascal Costanza)
3535 * fixed bug: FINALIZE-INHERITANCE is called from
3536 REINITIALIZE-INSTANCE on classes when the class has previously
3537 been finalized, as required by AMOP.
3538 * minor code generation optimizations:
3539 ** better register allocation in CLOS dispatching functions
3540 ** overflow detection when coercing signed bytes to fixnums on x86-64
3541 ** is now implemented with one IMUL instruction instead of three shifts
3542 ** more efficient bit-vector access on x86 and x86-64
3543 ** more efficient access to raw structure slots on x86 and x86-64
3544 * fixed some bugs revealed by Paul Dietz' test suite:
3545 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3546 return its argument.
3548 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3549 * feature: thread support on Solaris/x86, and experimental thread support
3551 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3553 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3554 default method for SLOT-UNBOUND.
3555 * minor incompatible change: prevent the user from specializing the
3556 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3557 somewhat counter to the intent of the protocol, I (CSR) think, and
3558 additionally it just doesn't work in SBCL as currently
3559 implemented, thanks to optimizations (that are always valid for
3560 the other three SLOT-VALUEish functions, but not for the setter).
3561 * minor incompatible change: the :SB-LDB feature is now enabled by
3562 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3563 the low-level debugger.
3564 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3565 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3566 down to an SB-SYS:FD-STREAM, allowing direct communication in
3567 more cases. Temporary files and pipes are still used as a fallback
3569 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3570 on the non-reentrant C functions localtime(3) and gmtime(3).
3571 * bug fix: global optimization policy was not visible in LOCALLY and
3573 * bug fix: class objects can be used as specializers in methods.
3574 (reported by Pascal Costanza)
3575 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3576 with a type error. (reported by blitz_ on #lisp)
3577 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3578 failed with a type error. (reported by Pascal Bourguignon)
3579 * bug fix: merging pathnames against defaults with :DIRECTORY
3580 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3581 (reported by James Y Knight)
3582 * bug fix: saving large (>2GB) cores on x86-64 now works
3583 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3584 constant index and a (simple-array (signed-byte 32)) array
3585 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3586 error (patch by Robert J. Macomber)
3587 * feature: TIME now displays the amount of run-time spent in GC
3588 * bug fix: The debugger now does a better job of respecting
3589 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3590 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3591 workaround for bug 403.)
3592 * bug fix: floating point exception handling now works on FreeBSD
3593 (thanks to NIIMI Satoshi)
3594 * fixed some bugs revealed by Paul Dietz' test suite:
3595 ** MISC.641: LET-conversion were not supposed to work in late
3597 * improvements to the Win32/x86 port:
3598 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3599 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3601 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3602 * new feature: source path information is generated for macro-expansion
3603 errors for use in IDE's like Slime (thanks to Helmut Eller)
3604 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3605 * bug fix: compiler does not loop forever on an invalid type in
3607 * improvement: compilation of most CLOS applications is significantly
3609 * optimization: added a limited bytecode compiler for simple toplevel
3610 forms, speeding up compilation and FASL loading
3611 * bug fix: the statistical profiler now properly distinguishes anonymous
3614 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3615 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3616 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3617 into subclasses of the finalized class. Now user calls to
3618 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3619 system return before any subclasses are finalized.
3620 * minor incompatible change: The reader no longer ignores errors
3621 regarding non-existent packages in #+ and #- feature tests.
3622 * new feature: command line options --no-sysinit, --no-userinit to
3623 inhibit loading the corresponding init files
3624 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3625 for sending data through UDP sockets (thanks to François-René Rideau)
3626 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3627 error is signalled instead (thanks to François-René Rideau)
3628 * minor incompatible change: Error signalling behaviour of lexical
3629 operations violating package locks has changed slightly. Refer to
3630 documentation on package locks for details.
3631 * enhancement: EVAL can process IF-expressions without resorting to the
3633 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3634 constant-folded properly due to missing out-of-line functions.
3635 (reported by Mika Pihlajamäki)
3636 * bug fix: LISTEN sometimes returned T even in cases where no data was
3637 immediately available from the stream
3638 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3639 were reversed. (reported by Levente Mészáros)
3640 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3641 when given a vector displaced to an adjustable array. (reported
3643 * bug fix: derivation of float boundaries from numbers outside the
3644 appropriate float range (reported by John Wiseman)
3645 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3647 * bug fix: precomputing cache entries for generic functions with
3648 some subclasses of specializers as yet invalid does not attempt to
3649 fill a cache line with a negative offset. (reported by Levente
3651 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3652 allow condition class objects as arguments to DOCUMENTATION and
3653 (SETF DOCUMENTATION); only find and set documentation for
3654 structure names for the STRUCTURE doc-type. (suggested by Gary
3656 * improvements to the Win32/x86 port:
3657 ** (user-homedir-pathname) and default initialization file
3658 locations now know about the user's "Documents and Settings"
3659 directory (thanks to Yaroslav Kavenchuk)
3660 ** run-program is implemented (thanks to Mike Thomas)
3661 ** sockets support (thanks to Timothy Ritchey)
3662 ** better backtrace support (thanks to Alastair Bridgewater)
3663 ** sb-grovel supported
3664 ** asdf-install and sb-posix work somewhat
3665 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3666 * improvements to the Solaris/x86 port:
3667 ** works on Solaris 11/Solaris Express
3668 ** floating-point exception handling support
3669 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3670 * fixed some bugs revealed by Paul Dietz' test suite:
3671 ** REMOVE-METHOD returns its generic function argument even when
3672 the method is not one of the generic functions' methods.
3673 ** objects declared as MEMBER types can be admissible arguments to
3674 structure accessors.
3675 ** printing characters should simply be printed by the FORMAT ~:C
3677 ** compiler failure when compiling functions with hairy constant
3678 defaults for optional parameters.
3679 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3680 function, which is already optimized.
3682 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3683 * new platform: experimental support for SBCL x86/Darwin, including
3684 MacOS X 10.4.5 on Intel.
3685 * new feature: Unicode character names are now known to the system
3686 (through CHAR-NAME and NAME-CHAR).
3687 * new feature: the filesystem location of SBCL's core file is
3688 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3689 * minor incompatible change: the contrib modules SB-POSIX and
3690 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3691 this change is to make it easier to distribute
3692 location-independent binaries.
3693 * bug fix: as implied by AMOP, standardized classes no longer have
3694 slots named by external symbols of public packages. (reported by
3696 * optimization: calling functions via constant symbols -- as in
3697 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3698 via the function object as in (FUNCALL #'FOO).
3699 * optimization: on x86 and x86-64, the calling convention for the
3700 case of dealing with an unknown number of values has been altered
3701 to be friendlier to the prediction heuristics implemented,
3702 particularly with reference to CALL and RET pairing. (thanks to
3703 Alastair Bridgewater)
3704 * optimization: on x86, the code for access to thread-local symbol
3705 values and binding/unbinding of thread-local symbols is smaller.
3706 (thanks to Alastair Bridgewater)
3707 * enhancement: CONSTANTP is now able to determine constantness of
3708 more complex forms, including calls to constant-foldable standardized
3709 functions and some special forms beyond QUOTE.
3710 * fixed bug: occasional GC crashes on Solaris/x86
3711 * optimization: x86-64 supports stack allocation of results of simple
3712 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3713 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3714 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3715 (thanks to James Knight)
3716 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3717 by the standard (thanks to Stephen Compall)
3719 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3720 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3721 be used for bundling the runtime and the core file into one
3722 executable binary. This feature is not currently supported on all SBCL
3723 platforms. (thanks to James Bielman and NIIMI Satoshi)
3724 * new feature: a generational or ephemeral garbage collector is now
3725 the default on the PowerPC platform (both Linux and Darwin). The
3726 old Cheney (stop and copy) collector is a build-time option.
3727 (thanks to Cyrus Harmon, after Raymond Toy)
3728 * minor incompatible change: the method by which SBCL finds its
3729 contributed modules has changed; it no longer relies on symbolic
3730 links from an $SBCL_HOME/systems directory, but searches directly
3731 in the subdirectories of $SBCL_HOME.
3732 * enhancement: the dynamic heap size on the Linux/PPC platform is
3733 markedly larger, even using the older Cheney garbage collector.
3734 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3735 certain complicated string types. (reported by Gary King)
3736 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3737 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3738 * fixed bug: DOCUMENTATION on structures no longer signals an
3739 error if no structure type of the right name exists. (reported by
3741 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3742 applicable non-standard primary or :AROUND method on
3743 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3744 no longer cause unbound variable errors. (reported by Kevin Reid)
3745 * fixed bug: metacircle resolution in cases where methods have slots
3746 added before the slots from STANDARD-METHOD. (reported by Jean
3748 * fixed bug: the Power PC assembly code for calling into lisp
3749 sometimes computed its return address wrongly (depending on the
3750 15th bit of the address, fixed at link time). This used to
3751 manifest itself in a segmentation violation while building PCL.
3752 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3753 many others over the years)
3754 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3755 the stack pointer (treated as a signed integer) is negative.
3756 (thanks to Peter van Eynde)
3758 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3759 * new platform: experimental support for the Windows operating
3760 system has been added. (thanks to Alastair Bridgewater)
3761 * fixed several bugs in and robustified the PPC FFI (including
3762 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3763 * bug fix: allow non-simple string symbol names (reported by Paul
3765 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3767 * bug fix: saving a core corrupted callbacks on x86/x86-64
3768 * bug fix: closed a loophole in metacircularity detection and
3769 grounding in the PCL implementation of CLOS.
3770 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3771 (reported by tomppa on #lisp)
3772 * bug fix: clear the direction flag on Lisp -> C transitions, as
3773 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3774 (reported by Andrej Grozin and Hendrik Maryns)
3775 * optimization: major improvements to GC efficiency on GENCGC platforms
3776 * optimization: faster implementation of EQUAL
3777 * optimization: emit more efficient opcodes for some common
3778 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3779 * optimization: several other minor code-generation improvements on x86-64
3780 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3782 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3783 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3784 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3785 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3786 by ANSI as a generic function, and for consistency (SETF
3787 GENERIC-FUNCTION-NAME) is treated likewise.
3788 * fixed bug #233.b: make constraint propagation notice when a variable
3789 value is changed after it is referenced but before it is used
3790 * fixed bug #296: no more arbitrary behaviour from filenames with
3791 odd characters as --load arguments. (reported by Adam Warner)
3792 * fixed bug #390: :CHARACTER-SET pathname components now work as
3793 expected. (reported by Tim Daly Jr)
3794 * fixed bug #391: complicated :TYPE intersections in slot
3795 definitions no longer cause an error in PCL internals.
3796 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3797 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3798 returning the number of octets which would be written to the
3799 file-stream. (thanks to Robert J. Macomber)
3800 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3801 arguments to the internal stream functions. (thanks to David
3803 * bug fix: stack exhaustion is now handled on the x86/SunOS
3804 platform. (thanks to Daisuke Homma)
3805 * bug fix: more accurate ROOM results on GENCGC platforms
3806 * optimization: improved type inference for arithmetic-for
3807 index variables in LOOP
3808 * optimization: faster floating-point SQRT on x86-64
3809 * fixed some bugs revealed by Paul Dietz' test suite:
3810 ** DOCUMENTATION returns NIL instead of "" for method combinations
3811 that don't have a docstring
3813 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3814 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3815 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3816 therefore are not customizeable by user code (as seems to be at
3817 least permitted and maybe required by AMOP). As a consolation,
3818 however, the SBCL implementation of these functions now calls
3819 REINITIALIZE-INSTANCE as specified by AMOP.
3820 * bug fix: slot-definition documentation is propagated as per ANSI
3821 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3822 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3823 argument, as do eslotd initialization methods. (from Pascal
3824 Costanza's "Closer" project)
3825 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3826 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3828 * bug fix: it is now possible to have more than one subclass of
3829 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3830 (reported by Bruno Haible, Pascal Costanza and others)
3831 * bug fix: the dependent update protocol now works for generic
3832 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3833 and Pascal Costanza)
3834 * bug fix: condition-class instances corresponding to
3835 DEFINE-CONDITION forms are now created eagerly. (reported by
3836 Kalle Olavi Niemitalo on comp.lang.lisp)
3837 * bug fix: floating point printing is more accurate in some
3838 circumstances. (thanks to Simon Alexander)
3839 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3840 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3841 * bug fix: callbacks on OS X now preserve stack-alignment.
3842 (thanks to Cyrus Harmon)
3843 * enhancement: the x86-64 disassembler is much better at
3844 disassembling SSE instructions. (thanks to Lutz Euler)
3845 * enhancement: CHECK-TYPE on a variable now allows type-inference
3846 (thanks to Vincent Arkesteijn)
3847 * optimization: improved performance of EUC-JP external format.
3848 (thanks to NIIMI Satoshi)
3849 * optimization: performance improvements to IO on file streams of
3850 :ELEMENT-TYPE CHARACTER
3851 * optimization: much faster memory allocation on x86-64
3852 * optimization: faster garbage collections (latency and throughput)
3854 * optimization: faster bignum subtraction and division on x86 and x86-64
3855 (thanks to Lutz Euler)
3856 * optimization: more accurate type-inference for loops that use a
3857 floating point index variable or a negative step.
3859 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3860 * bug fix: add a workaround to SBCL looping infinitely at startup on
3861 Linux kernels with apparently buggy implementations of personality().
3862 (thanks to Svein Ove Aas)
3863 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3864 (thanks to David Lichteblau)
3865 * bug fix: local bindings shadow global symbol macros for
3866 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3867 * optimization: non-open coded uses of numeric comparison operators
3868 (e.g. >) no longer cons when called with more than one parameter
3869 on platforms supporting dynamic-extent allocation.
3870 * enhancement: saving cores with foreign code loaded is now supported
3871 on MIPS/Linux in addition to the previously supported platforms.
3872 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3873 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3874 * bug fix: division by zero in sb-sprof when no samples were collected
3875 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3876 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3877 (thanks to Alexander Kjeldaas)
3878 * new feature: ignoring the return values of destructive functions
3879 like NREVERSE signals a compile-time style-warning.
3880 (thanks to Kevin Reid)
3881 * new feature: the alignment of alien structure fields can be
3882 explicitly specified. (thanks to Cyrus Harmon)
3883 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3884 and dump core on SIGQUIT
3886 ** incompatible change: threads do not inherit values of specials
3887 from their parents (see manual)
3888 ** bug fix: threads stacks belonging to dead threads are freed by the
3889 next exiting thread, no need to gc to collect thread stacks anymore
3890 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3891 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3892 ** bug fix: dynamic variable and thread start related gc lossage
3893 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3895 * fixed some bugs revealed by Paul Dietz' test suite:
3896 ** SUBTYPEP is slightly more accurate on heinously complicated
3897 CONS types where some of the members have uncertain (in the
3898 NIL, NIL sense) type relationships to each other.
3900 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3901 no longer purified unless :PURIFY T is explicitly specified.
3902 ** Non-purified cores are significantly smaller than before
3904 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3905 * new feature: timers based on Zach Beane's excellent timer package
3906 * added support for the following external formats: koi8-u,
3907 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3908 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3909 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3910 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3911 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3912 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3913 * incompatible change: a threaded SBCL will no longer revert to
3914 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3915 * bug fix: interrupts are disabled until startup is complete; no
3916 more sigsegvs when receiving a signal to soon
3917 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3919 * bug fix: add a workaround for the memory randomization features in
3920 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3921 workaround will only be in effect on systems with the proc filesystem
3923 * bug fix: printing objects of type HASH-TABLE signals a
3924 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3926 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3927 have been running for over 50 days. (reported by Gilbert Baumann)
3928 * bug fix: the logic for getting names of functions gets less
3929 confused when confronded with alternate-metaclass
3930 funcallable-instances. (reported by Cyrus Harmon)
3931 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3932 consistent, even on internal alternate-metaclass objects.
3933 * bug fix: flush closure information collected by physical
3934 environment analysis prepass before the main pass. (bug reported
3936 * bug fix: compiler pack phase does not modify a hashtable, which is
3937 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3938 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3939 may be expanded. (reported by Alexander <malishev> on c.l.l)
3940 * bug fix: no more style-warnings when compiling code using LAST
3941 under high-SPEED low-SPACE settings. (reported by David Wallin
3943 * fixed some incompatibilities between SBCL's MOP and the MOP
3945 ** the METAOBJECT class is now implemented;
3946 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3947 STANDARD-OBJECT, as required;
3948 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3949 now compatible (as required by VALIDATE-SUPERCLASS); there
3950 remains a consistency requirement over the presence or absence
3951 of the FUNCTION class in the superclass list of finalized
3952 classes; see the manual for more details;
3953 ** the :AROUND method for COMPUTE-SLOTS on
3954 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3955 requested slot ordering.
3957 ** bug fix: parent thread now can be gc'ed even with a live
3959 ** bug fix: binding a special with PROGV to no value is not
3960 the same as that symbol not having been bound (thanks to
3962 ** bug fix: binding specials is thread safe (thanks to
3964 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3965 and SB-SPROF do not die with 'no handler for signal XX in
3966 interrupt_handle_now(..)' anymore
3967 ** bug fix: WITH-TIMEOUT works with multiple running threads
3968 * fixed some bugs revealed by Paul Dietz' test suite:
3969 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3970 the :method-class keyword argument.
3972 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3973 * new port: the Solaris operating system on x86 processors is now
3974 mostly supported, though some rough edges in the environment
3975 remain. (thanks to Daisuke Homma)
3976 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3977 space for its heap. (thanks to Thiemo Seufer)
3978 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3979 closures. (thanks to Thiemo Seufer)
3980 * minor incompatible change: eof selects abort in the debugger.
3981 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3982 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3984 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3985 deprecated, and will go away in a future revision of SBCL.
3986 * minor incompatible change: GC-ON and GC-OFF are no longer
3987 implemented with a counter, it does not matter how many times gc
3988 is switched on or off
3989 * bug fix: discriminating functions for generic function classes
3990 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3991 make invalid assumptions about method precedence order. (reported
3993 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3994 platforms. (thanks to Thiemo Seufer)
3995 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3996 * bug fix: correct pathname printing with printer escaping is on.
3997 (thanks to Kevin Reid)
3998 * bug fix: complex VOP definitions in "user-space" no longer trigger
3999 package locks. (reported by Zach Beane)
4000 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4001 for funcallable-instance functions, and is no different from
4003 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4004 characters in the current readtable. (reported by Nicholas Neuss)
4005 * bug fix: SUBTYPEP on various CONS types returns more a more
4006 accurate acknowledgment of its certainty.
4007 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4008 lists in some cases. This partially fixes bug 384.
4009 * flush all standard streams before prompting in the REPL and the
4011 * bug fix: signal handling and triggering gc do not conflict
4012 directly anymore, in particular a high frequency sb-sprof does
4013 not prevent gc from running
4014 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4015 approximation for timezone and DST information between the
4016 universal time epoch and the smallest negative 32-bit time_t.
4017 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4018 year 1899 so long as the encoded time is non-negative.
4019 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4020 the correct answer for non-constant rotate amounts when performing
4021 an inline 32-bit rotation.
4023 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4024 there is only one thread in the session
4025 ** bug fix: memory leak for streams created in one thread and
4026 written to in another
4027 ** bug fix: lockup when compiled with gcc4
4028 ** bug fix: race that allows the gc to be triggered when gc is
4030 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4031 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4033 ** bug fix: finished threads are gc'ed properly
4034 * fixed some bugs revealed by Paul Dietz' test suite:
4035 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4036 has arguments with a different set of applicable methods from
4037 the orignal arguments.
4038 ** The type error thrown by MAP now has a correct expected-type
4040 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4041 name a compiled function.
4042 ** Three MISC tests where a large bignum was improperly coerced to
4043 a float that couldn't represent that bignum during type
4044 derivation were fixed.
4045 ** SUBTYPEP can now handle types involving the negation of a
4046 list-form FUNCTION type.
4047 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4048 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4049 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4051 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4052 * New feature: Experimental support for bivalent streams: streams
4053 opened with :element-type :default now allow character and binary
4054 (unsigned-byte 8) I/O
4055 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4056 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4058 * bug fix: no more highly sporadic "couldn't check whether ~S is
4059 readable" when reading a stream and an interrupt hits in the middle
4060 of a select system call
4061 * compiler better recognizes complex arrays (reported by Eduardo
4063 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4064 for variables on SBCL built with linkage-tables. (reported by Luis
4066 * various error reporting improvements.
4067 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4068 (Thanks to Thiemo Seufer)
4069 * bug fix: nested reader invokations work correctly
4070 * bug fix: it is possible to have simultaneous references to foreign
4071 code and foreign data with the same name.
4073 ** added x86-64 support
4074 ** incompatible change: the threading api now works with thread
4075 objects instead of thread ids
4076 ** bug fix: threads are protected from signals and interruption when
4077 starting up or going down
4078 ** bug fix: a race where an exiting thread could lose its stack to gc
4079 ** bug fix: don't halt on infinite error in threads if possible
4080 ** fixed numerous gc deadlocks introduced in the pthread merge
4081 ** bug fix: fixed thread safety issues in read and print
4082 ** bug fix: debugger doesn't hang on session lock if interrupted at
4083 an inappropriate moment
4084 ** bug fix: run-program is now thread safe(r)
4085 ** bug fix: inner with-recursive-lock no longer releases the mutex
4086 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4087 * fixed some bugs revealed by Paul Dietz' test suite:
4088 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4089 EXPECTED-TYPE slots filled.
4090 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4092 ** MAKE-CONDITION accepts classes as type-designators.
4093 ** COMPILE may never return NIL.
4094 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4095 range before calling Unix time functions
4097 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4098 * numerous signal handling fixes to increase stability
4099 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4100 * minor incompatible change: we now correctly canonize default
4101 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4102 as per the MOP, rather than the historical (INITARG INITFUNCTION
4103 INITFORM). (reported by Bruno Haible)
4104 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4105 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4106 for more information.
4107 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4108 pathname is a directory pathname.
4109 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4110 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4112 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4113 :METACLASS argument in addition to a class name. (reported by
4114 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4115 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4116 (reported by Bruno Haible; patch from Gerd Moellmann)
4117 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4119 * bug fix: more cleanups to the floating point exception handling on
4120 x86-64 (thanks to James Knight)
4121 * bug fix: the compiler does not try to constant fold calls of
4122 COERCE and BIT-* functions when they return freshly constructed
4123 objects. (reported by Nikodemus Siivola and Paul Dietz)
4124 * optimization: improved the MIPS versions of generic (in the
4125 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4126 * optimization: direct conversion of (unsigned-byte 32) to floats on
4127 the PowerPC platform.
4128 * optimization: structure instances with raw slots now use less
4129 memory, and probably show better memory locality. (thanks to
4131 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4132 are treated as requests for stack allocation on the x86-64,
4133 Alpha-32, PPC and SPARC platforms.
4134 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4135 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4136 (thanks to Tony Martinez)
4138 ** gcing a dead thread can no longer lead to lockups
4139 ** threads block signals until they are set up properly
4140 ** errno is no longer shared by threads
4141 ** interrupt-thread restores the eflags register on x86
4142 ** fixed some lockups due to gc/thread interaction
4143 * fixed some bugs revealed by Paul Dietz' test suite:
4144 ** invalid dotted lists no longer raise a read error when
4145 *READ-SUPPRESS* is T
4146 ** signal an error if a symbol that names a declaration is used
4147 as the name of a type, or vice versa
4148 ** allow using the (declare (typespec var*)) abbreviation for
4149 (declare (type typespec var*)) with all type specifiers
4150 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4151 ** always return NIL from PPRINT-POP when OBJECT is NIL
4152 ** don't signal errors when pretty-printing malformed LABELS,
4153 FLET or MACROLET forms
4154 ** declarations in a DOLIST body are also in scope for the
4156 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4158 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4161 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4162 * fixed cross-compiler leakages that prevented building a 32-bit
4163 target with a 64-bit host compiler.
4164 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4165 opened with :IF-EXISTS :OVERWRITE.
4166 * fixed bug 281: error for an invalid qualifier in a short-form method
4167 combination method is not signalled until the faulty method is called.
4168 * bug fix: iteration variable type inferrer failed to deal with open
4169 intervals. (reported by Alan Shields)
4170 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4171 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4172 or more runtime options were provided to the sbcl binary.
4173 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4174 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4175 * optimization: there's now a fast-path for fixnum arguments in the
4176 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4177 * optimization: the code generated on x86-64 is more compact thanks
4178 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4179 * bug fix: floating-point exception handling now partly works on
4180 x86-64. (Thanks to James Knight)
4181 * improvement to the MIPS backend from Thiemo Seufer: C-style
4182 64-bit long long arguments and return values to alien functions
4184 * fixed some bugs revealed by Paul Dietz' test suite:
4185 ** the type-error signalled from WARN has a filled-in DATUM slot.
4186 ** the type-error required when a stream is not associated with
4187 a file has the stream as its datum.
4188 ** type-errors on single-floats on x86-64 no longer have
4189 :INVALID-OBJECT as the datum
4190 ** the type-errors signalled for invalid function names now have
4191 a correct expected type
4192 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4193 for structures defined with a :TYPE. Documentation strings for
4194 typed structures are no longer immediately discarded
4195 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4196 broadcast streams and synonym streams. FILE-LENGTH now also works
4197 on broadcast streams.
4199 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4200 * incompatible change: the --noprogrammer option, deprecated since
4201 version 0.7.5, has been removed. Please use the equivalent
4202 --disable-debugger option instead.
4203 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4205 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4206 inoperational for a while now) has been completely removed.
4207 * null lexical environments are now printed as #<NULL-LEXENV>,
4208 significantly reducing the amount of clutter in typical backtraces.
4209 * documentation on weak pointers, finalization, and after GC hooks
4210 has been added to the manual.
4211 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4212 as other specialized array types, is much faster. SUBSEQ and
4213 COPY-SEQ on such arrays have also been sped up.
4214 * optimization: EQL is now more efficient when at least other argument
4215 is known to be of type (OR FIXNUM (NOT NUMBER)).
4216 * fixed bug: the runtime is now less vulnerable to changes in the
4217 size of the SBCL object on OS X, and virtual memory is reserved for
4218 all spaces that need to be at a fixed address.
4219 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4220 * fixed bug: finalizers and after GC hooks that cause consing are now
4222 * fixed bug: compiler error messages and summaries are now printed to
4223 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4224 * fixed inference of the upper bound of an iteration variable.
4225 (reported by Rajat Datta).
4226 * fixed bug 211e: calling local functions with duplicated constant
4227 keyword argument no longer causes a bogus style warning about an
4229 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4230 ftype declaration to be disregarded. (reported by Dave Roberts)
4231 * fixed bug 373: caused by erronous compilation of references to alien
4232 variables in the runtime on ppc/darwin.
4233 * fixed bug 376: CONJUGATE type deriver.
4234 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4235 (reported by Baughn on #lisp)
4236 * a cross-compiler bug on non-x86 platforms has been identified and
4237 fixed. (thanks to Bruno Haible)
4238 * improvements to the MIPS runtime code for increased stability.
4239 (thanks to Thiemo Seufer)
4240 * increased the maximimum compact environment size to allow
4241 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4242 * partial workaround for bug 135: don't name the function we're
4243 calling for hairy cases of EVAL, so as not to accumulate one environment
4244 entry per call to EVAL. (reported by Kevin Reid)
4245 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4246 * optimization: type testing for non-vector arrays should be faster.
4247 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4249 * bug fix: setting 31st element of a bit vector to zero did not work
4251 * bug fix: redefining a class definition which failed due to a
4252 previous accessor / function clash now works (but see BUGS entry
4253 #380 for more problems in this area). (thanks to Zach Beane)
4254 * the long form of DEFINE-METHOD-COMBINATION disables method group
4255 checking when given a single method group with pattern *. (thanks
4257 * on x86 compiler supports stack allocation of results of simple
4258 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4259 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4260 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4261 * fixed some bugs related to Unicode integration:
4262 ** the restarts for recovering from input and output encoding
4263 errors only appear when there is in fact such an error to
4265 * fixed some bugs revealed by Paul Dietz' test suite:
4266 ** MISC.549 and similar: late transformation of unsafe type
4267 assertions into derived types caused unexpected code
4269 ** SCALE-FLOAT type deriver is less wrong.
4270 ** type derivers for EXP, LOG and similar functions compute result
4271 types for complex arguments better.
4272 ** (MISC.563) CONJUGATE type deriver works for very restricted
4274 ** out-of-line type testers for character strings are available.
4275 ** EQUAL compiler transform understands specialness of objects
4277 ** accessing double-floats stored on the stack now works on x86-64.
4278 ** debugger internals could sometimes create invalid lispobjs,
4279 resulting in GC crashes.
4280 ** MISC.548: type check weakening can convert required type into
4282 ** initialization forms for bindings are not in scope of free special
4285 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4286 * incompatible change: thread support for non-NPTL systems has
4287 been removed - locking is buggy and unreliable. A threaded
4288 SBCL build will now warn at startup and refuse to create
4289 new threads, unless futex support is detected in the kernel
4290 * incompatible change: the top level REPL now has only an ABORT
4291 restart associated with it, not TOPLEVEL and ABORT as it used to.
4292 TOP and TOPLEVEL are now available as debugger commands for
4293 returning to the top level.
4294 * incompatible change: forms evaluated in the REPL now use the
4295 global optimization policy.
4296 * incompatible change: user- and system-initialization files are
4297 no longer processed with LOAD, but by READ and EVAL; hence the
4298 global optimization policy, startup package, readtable, etc,
4300 * The .fasl file format number has been incremented because of
4301 various incompatible changes.
4302 * internal entry point details and argument counts no longer appear
4303 in backtraces unless explicitly requested by setting
4304 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4305 * built-in and standard functions no longer have names like "top
4306 level local call to FOO".
4307 * fixed bug 32: functions defined in non-null lexical environments
4308 now have more legible printed representation
4309 * fixed bug 33: functions defined in non-null lexical environemnts
4310 are now more amenable to inspection by INSPECT.
4311 * workaround for bug 354: XEPs no longer appear in backtraces unless
4312 explicitly requested.
4313 * fixed bug: receiving the signal which results from attempting to
4314 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4315 SIGBUS on other *BSDs) on architectures where the C stack is also
4316 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4317 to debugger confusion or wild instability. (reported by Cheuksan
4319 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4320 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4321 (reported by Lutz Euler)
4322 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4323 compiled code. (reported by Paul Dietz)
4324 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4325 specialized parameter to a method to something that is not TYPEP
4326 the specializer is now possible.
4327 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4328 face of package deletion.
4329 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4330 pathname. (reported by David Tolpin on c.l.l)
4331 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4332 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4333 STRING-STREAM and FILE-STREAM, respectively.
4334 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4335 than previously; in addition, its test suite is now run on build.
4336 (thanks to Luke Gorrie)
4337 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4338 * optimization: added a immediate representation for single-floats
4340 * fixed some bugs revealed by Paul Dietz' test suite:
4341 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4342 ** attempting to create a package with a colliding nickname causes
4343 correctable errors to be signalled.
4344 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4345 ** several x86-64 backend bugs related to sign-extension of immediate
4348 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4349 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4350 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4352 * fixed loading of multiply forward-referenced layouts.
4353 (thanks to Cheuksan Wang)
4354 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4355 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4356 (see COMPILE-FILE documentation for details of :PRINT option)
4357 * fixed bugs 19 and 317: fixed-format floating point printing is
4358 more accurate. This also fixes a bug reported by Adam Warner
4359 related to the ~@F format directive.
4360 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4362 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4363 dispatch table if the from-char is a dispatch macro character.
4364 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4365 by the wordsize no longer ignore the last word. (reported by Lutz
4367 * fixed bug in type checking of dynamic-extent variables. (reported
4369 * optimization: sequence traversal functions use their freedom to
4370 coerce function designators to functions.
4371 * optimization: code with many calls to CLOS methods specialized on
4372 CLOS classes has had redundant type checks removed.
4373 * optimization: added declarations to speed up operations that access
4374 the internal character database (for example STRING-UPCASE)
4375 * optimization: comparison operations between floats and sufficiently small
4376 fixnums no longer create extra rationals
4377 * fixed some bugs related to Unicode integration:
4378 ** portions of multibyte characters at the end of buffers for
4379 character-based file input are correctly transferred to the
4380 start of the buffer at the next read.
4381 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4382 passing it through to OPEN.
4383 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4384 argument given to internal calls to OPEN.
4385 ** the built-in comment readers (introduced by character sequences
4386 ";" and "#|") are more forgiving to encoding errors; they will
4387 STYLE-WARN and then attempt to resync the stream at a character
4388 boundary. (thanks to Teemu Kalvas)
4389 * fixed some bugs in the x86-64 port:
4390 ** Negative short int return values from c-calls are sign-extended
4392 ** The stack is aligned to 16-bytes for c-calls, as required by
4393 the ABI. (thanks to Cheuksan Wang)
4394 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4395 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4396 for enums. (thanks to Vincent Arkesteijn)
4397 ** Multiple small optimizations and bugfixes for floating point
4399 * fixed some bugs revealed by Paul Dietz' test suite:
4400 ** Space, Tab, Linefeed, Return and Page have the invalid
4401 secondary constituent character trait.
4402 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4404 ** WITH-INPUT-FROM-STRING should only update the index place on
4406 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4407 works more reliably.
4408 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4409 with one-dimensional arrays with fill pointers.
4410 ** TYPE-OF failed on a complex with an integer realpart and a
4412 ** compiler failure during type inference for the code of form
4413 (IF (EQL X (THE ...)) ...) (MISC.535).
4415 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4416 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4417 platform. The port supports 61-bit fixnums, large memory spaces
4418 and reloading shared object files.
4419 * enhancement: saving cores with foreign code loaded is now
4420 supported on ppc/Darwin in addition to the previously supported
4422 * enhancement: the statistical profiler now walks deeper into the
4423 call stack for more meaningful call-graphs and accrued time
4424 reports (x86/x86-64 only). It also now reports time spent in
4426 * enhancement: it is now possible to trace most individual methods
4427 of a generic function in addition to tracing the generic function
4429 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4431 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4432 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4433 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4434 produces an error. (thanks to Vincent Arkesteijn)
4435 * bug fix: NAMESTRING on pathnames with :WILD components in their
4436 directories works correctly. (thanks to Artem V. Andreev)
4437 * fixed bug 125: compiler preserves identity of closures. (reported
4439 * bug fixed: functions with &REST arguments sometimes failed with
4440 "Undefined function" when compiled with (DEBUG 3). (reported by
4442 * bug fix: overflow during compiling of setting element of a bit
4443 vector with constant index and value. (reported by Timmy Douglas)
4444 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4445 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4446 * on x86 compiler partially supports stack allocation of dynamic-extent
4448 * GO and RETURN-FROM do not check the extent of their exit points
4449 when compiled with SAFETY 0.
4450 * fixed some bugs related to Unicode integration:
4451 ** encoding and decoding errors are now much more robustly
4452 handled; it should now be possible to recover even from invalid
4453 input or output to the terminal. (thanks to Teemu Kalvas)
4454 ** provided a first cut at implementing STRING-TO-OCTETS and
4455 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4456 ** altered the SB-MD5 contributed module slightly, changing the
4457 interface just enough for it to be supportable for builds where
4458 lisp characters are not eight bits.
4459 * fixed some bugs revealed by Paul Dietz' test suite:
4460 ** the FORMATTER-generated functions for ~V[ conditionals require
4461 the correct number of arguments.
4462 ** READ-FROM-STRING returns the mandated second value when applied
4463 to displaced strings.
4464 ** the #\Rubout and #\Backspace characters are treated as invalid
4465 constituent characters by the tokenizer.
4467 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4468 * new feature: reloading changed shared object files with
4469 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4470 * new feature: references to foreign variables and functions
4471 can now be compiled and loaded before the corresponding shared
4472 object file is loaded, as long as the foreign definitions are
4473 available at runtime.
4474 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4475 supported. (thanks to Dan Debertin)
4476 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4477 just keywords. (thanks to Vincent Arkesteijn)
4478 * fixed bug #331: structure-class instances corresponding to
4479 DEFSTRUCT forms are now created eagerly.
4480 * fixed bug #345: backtraces from calls to undefined functions work
4481 on x86 as well. Related bug #61 is now also partially fixed on x86
4482 (backtraces from throws to unknown catch tags.)
4483 * bug fix: lambda-list parsing is now stricter vrt. order and number
4484 of lambda-list keywords.
4485 * bug fix: as specified by AMOP, an error is signalled if a
4486 class-option appears multiple times in a DEFCLASS form. (reported
4488 * bug fix: RANDOM can be compiled when the compiler derives the type
4489 of its numeric argument as a disjoint set of small integers.
4490 (reported by Paul Dietz)
4491 * bug fix: starting a core saved with shared objects loaded when
4492 those objects are not available no longer causes threaded SBCL to
4493 hang. (reported by Sean Ross)
4494 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4496 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4497 argument, which must always be NIL. (reported by Kalle Niemitalo)
4498 * bug fix: printing 1.0d+23 no longer results in an error.
4499 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4500 * bug fix: structure slot setters preserve evaluation order. (thanks
4502 * fixed some bugs related to Unicode integration:
4503 ** RUN-PROGRAM can allow its child to take input from a Lisp
4504 stream. (reported by Stefan Scholl)
4505 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4506 locales. (reported by Ken Causey)
4507 * fixed some bugs revealed by Paul Dietz' test suite:
4508 ** INCF, DECF and REMF evaluate their place form as specified in
4510 ** FORMATTER expands ~{ ~} iteration directives with V or #
4511 parameters correctly.
4512 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4513 consequent uses no arguments correctly.
4514 ** the system has a partial understanding of the (COMPLEX RATIO)
4516 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4519 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4520 * new feature: a build-time option (controlled by the :SB-UNICODE
4521 keyword feature, enabled by default) for building the system with
4522 support for the entire 21-bit character space defined by the
4524 * new feature: the system now has rudimentary external-format
4525 support; the primary user-visible change at this time is that
4526 characters with the high bit set (such as lower-case-e-acute) will
4527 print correctly to a terminal in a UTF-8 environment.
4528 * minor incompatible change: BASE-CHAR no longer names a class;
4529 however, CHARACTER continues to do so, as required by ANSI.
4530 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4531 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4532 has been moved to the SB-EXT package (temporarily re-exported from
4534 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4535 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4537 * fixed bug #351: better error-handlind and reporting for malformed
4539 * fixed bug #350: bignum-printing is now more memory-efficient,
4540 allowing printing of very large bignums, eg. (expt 2 10000000).
4541 (reported by Bruno Haible)
4542 * fixed bug #302: better primitive-type selection for intersection
4544 * fixed bug #308: non-graphic characters now all have names, as
4545 required. (reported by Bruno Haible)
4546 * bug fix: redefining a class with different superclasses now correctly
4547 removes it from the direct-subclasses of its previous superclasses.
4548 (reported by David Morse)
4549 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4550 new value now works. (reported by Bruno Haible)
4551 * bug fix: correct canonicalization of multiple non-standard slot
4552 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4553 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4554 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4555 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4556 now exists, an signals an error.
4557 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4558 during macroexpansion for non-iteration variables as well. (reported
4559 by Bruno Haible for CMUCL)
4560 * bug fix: Cyclic structures and unprintable objects in compiler
4561 messages no longer cause errors. (reported by Bruno Haible)
4562 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4563 and READ-FROM-STRING all now return a primary value of NIL if
4564 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4565 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4566 (reported by Bruno Haible for CMUCL)
4567 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4568 do not designate a condition. (reported by Bruno Haible for
4570 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4571 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4572 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4573 permitting resolution in favour of any of the conflicting symbols.
4574 (reported by Bruno Haible for CMUCL)
4575 * bug fix: EQUAL compiler optimizations is less aggressive on
4576 strings which can potentially compare true despite having distinct
4577 specialized array element types.
4578 * bug fix: unit enumerations can be defined without dividing by
4579 zero. (thanks to Vincent Arkesteijn)
4580 * FORMAT compile-time argument count checking has been enhanced.
4581 (report from Bruno Haible for CMUCL)
4582 * a partial workaround for the bug 262: the compiler does not try to
4583 inline-expand a local function doing RETURN-FROM from a deleted
4584 BLOCK. (thanks to Peter Denno for the bug report and to David
4585 Wragg for the simple test case)
4586 * fixed some bugs revealed by Paul Dietz' test suite:
4587 ** RENAME-PACKAGE allows all package designators as new package
4589 ** constraint propagation and lambda variable substitution are
4590 more cautious in dealing with partially deleted code.
4591 ** compiler sometimes lost reoptimization passes.
4592 ** CERROR, given a condition as condition designator, passes its
4593 remaining arguments to the continue format control without
4595 ** Case-altering FORMAT directives work correctly on non-ASCII
4597 ** The REAL type specifier handles bounds outside the floating
4598 point ranges without signalling FLOATING-POINT-OVERFLOW.
4599 ** Functions with IR1-transformations can create intercomponent
4600 references to global functions.
4601 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4603 ** FORMAT ~R treats a nil value for its first parameter correctly.
4605 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4606 * enhancement: saving cores with foreign code loaded is now
4607 supported on x86/NetBSD and sparc/Linux in addition to the previously
4608 supported platforms.
4609 * bug fix: on some platforms repeated installations caused multiple
4610 copies of HTML documentation to be installed -- should not happen
4611 any more. (reported by Stefan Scholl)
4612 * bug fix: parsing self-recursive alien record types multiple times
4613 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4614 original patch by Helmut Eller for CMUCL)
4615 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4616 (thanks to Richard Kreuter)
4617 * bug fix: defining classes whose accessors are methods on existing
4618 generic functions in other (locked) packages no longer signals
4619 bogus package lock violations. (reported by François-René Rideau)
4620 * bug fix: special variables as DEFMETHOD parameters no longer have
4621 associated bogus type declarations. (reported by David Wragg and
4623 * bug fix: read-write consistency on streams of element-type
4624 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4625 * bug fix: redefiniton of the only method of a generic function with
4626 no DEFGENERIC no longer emits a full WARNING. In addition,
4627 redefinition of generic functions with no DEFGENERIC to an
4628 incompatible lambda list now signals an error. (thanks to Zach
4630 * bug fix: DEFGENERIC now works even when there's a function of the
4631 same name in an enclosing lexical environment. (thanks to Zach
4633 * fixed compiler failure, caused by instrumenting code during
4634 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4635 * optimization: added loop analysis and improved register allocation
4636 * fixed some bugs revealed by Paul Dietz' test suite:
4637 ** POSITION on displaced vectors with non-zero displacement
4638 returns the right answer.
4639 ** (SIMPLE-STRING) is a valid type specifier for sequence
4641 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4643 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4644 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4646 ** The justification version of the FORMAT ~< directive treats
4647 non-zero minpad parameter correctly.
4649 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4650 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4651 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4652 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4653 the supported interface.
4654 * new feature: Single-stepping of code compiled with DEBUG 2 or
4655 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4656 * new feature: saving cores with foreign code loaded is now
4657 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4658 Timothy Moore's work for CMUCL)
4659 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4660 parameters to * instead of NIL if no initform is supplied.
4661 (reported by Johan Bockgaard)
4662 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4663 correctly when FUNCALL appears as the car of the form. Note:
4664 despite this FUNCALL forms are not currently subject to
4665 compiler-macro expansion. (port of Raymond Toy's fix for the
4666 same from CMUCL, reported by Johan Bockgaard)
4667 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4668 (thanks for Teemu Kalvas)
4669 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4670 case instead of terminating the iteration (thanks for Julian
4671 Squires, Sean Champ and Raymond Toy)
4672 * bug fix: incorrect expansion of defgeneric that caused a style
4673 warning. (thanks for Zach Beane)
4674 * bug fix: slot accessor effective method computation works properly
4675 for classes with multiple non-standard applicable methods on
4676 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4677 * on x86 compiler supports stack allocation of results of LIST and
4678 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4679 CMUCL implementation by Gerd Moellmann)
4680 * fixed some bugs revealed by Paul Dietz' test suite:
4681 ** FORMAT strings with both the ~<~:;~> form of the justification
4682 directive and pretty-printing directives cause an error.
4684 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4685 * incompatible change: the internal functions
4686 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4687 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4688 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4689 instead of the old functions.
4690 * new feature: on platforms where "dladdr" is available foreign
4691 function names now appear in backtraces. (based on Helmut Eller's
4693 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4694 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4696 * documentation: ASDF manual is now distributed with SBCL.
4697 * bug fix: SBCL can now load its contributed modules with REQUIRE
4698 even if the system-provided entries have been removed from
4699 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4701 * bug fix: backtraces involving undefined functions or assembly
4702 routines are more informative. (thanks to Brian Downing)
4703 * bug fix: mutually referent alien structures now work correctly.
4704 (reported by Rick Taube)
4705 * bug fix: structures defined by WITH-ALIEN can be referred to
4706 within other definitions in the same WITH-ALIEN.
4707 * bug fix: division operators (MOD, TRUNCATE and the like) with
4708 constant zero divisors and integer dividends no longer generate
4710 * bug fix: provide default methods for INPUT-STREAM-P and
4711 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4712 * bug fix: improve the detection and resolution of MOP metacycles
4713 (where effective method computation depends on the generic function
4714 having its effective method computed). (reported by Bruno Haible)
4715 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4716 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4717 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4718 * bug fix: pathnames with relative directory components can be
4719 represented relative to default pathnames.
4720 * optimization: in taking the GCD of bignums, reduce the two bignums
4721 to approximately the same size (using Euclid's algorithm) before
4722 applying the more sophisticated binary GCD. (thanks to Juho
4724 * optimization: COUNT on bitvectors now operates word-at-a-time.
4725 * optimization: ASH with a positive, but not necessarily constant,
4726 (leftwards) shift, when in a modular context, is compiled to a
4728 * fixed some bugs revealed by Paul Dietz' test suite:
4729 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4730 if the corresponding argument is NIL.
4731 ** FORMAT directives accepting a minpad parameter treat negative
4733 ** literal commas as character parameters to FORMAT directives are
4735 ** literal spaces directly after ~<Newline> directives within a
4736 format-logical-block (~:< ~@:>) do not induce :FILL-style
4737 conditional newlines.
4738 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4739 as specified: it no longer includes conditional newlines).
4740 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4742 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4743 :PER-LINE-PREFIX argument does not evaluate to a string.
4745 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4746 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4747 the manual for details; for now, package locks can be disabled by
4748 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4749 if no major problems are found then it is likely that they will be
4750 compiled in unconditionally.
4751 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4752 unsupported operators on all platforms. To load a shared library
4753 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4754 object file, link it into a shared library outside of SBCL and
4755 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4757 * bug workaround: ROOM T and the GC were not working together
4758 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4759 reporting facility aren't preserved. That reporting has been
4760 disabled, so now until and unless someone figures out how to make it
4761 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4762 * minor incompatible change: as threatened around sbcl-0.8.0, the
4763 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4764 The symbols are also exported from SB-PCL for backwards
4765 compatibility, but more so than before SB-PCL should be treated as
4766 an implementation-internal package.
4767 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4769 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4770 It is known as of this release not to work on the Alpha, however.
4771 * fixed bug #167: errors signalled due to illegal syntax in method
4772 bodies are now more legible.
4773 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4774 designators and can hence be used with TYPEP.
4775 * fixed bug #333: CHECK-TYPE now ensures that the type error
4776 signalled, if any, has the right object to be accessed by
4777 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4778 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4779 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4781 * fixed bug #334: programmatic addition of slots using specialized
4782 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4783 and :ALLOCATION :CLASS slots.
4784 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4785 float exponents. (rereported by Peter Seibel)
4786 * fixed a bug: #\Space (and other whitespace characters) are no
4787 longer considered to be macro characters in standard syntax by
4788 GET-MACRO-CHARACTER.
4789 * fixed bug: initialization of condition class metaobjects no longer
4790 causes an instance of the condition to be created. (reported by
4792 * fixed bug: it is now possible to have slots such that
4793 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4794 description is neither :INSTANCE nor :CLASS.
4795 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4796 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4797 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4798 non-standard SLOT-DEFINITION-ALLOCATION values.
4799 * fixed bugs: various race conditions handling exiting threads.
4800 CL-PPCRE's thread torture test now passes.
4801 * fixed arguably-a-bug: GC time proportional to number of threads in
4802 system even when most of them are idle
4803 * optimization: improved performance of BIT and SBIT on bit-vectors.
4804 * .fasl file incompatibility: The fasl file version number has
4805 been incremented because of changes associated with package locks.
4807 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4808 * minor incompatible change: the system no longer provides
4809 optimization hints (conditions which are TYPEP
4810 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4811 mode; these hints are still emitted when higher SPEED optimization
4813 * new contrib module: a sampling profiler (profiling by statistical
4814 sampling, rather than by instrumenting functions) is available as
4815 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4816 * the behaviour of the standard function ED is now customizeable by
4817 third parties through a hook variable: see ED's documentation
4818 string for information on the protocol.
4819 * the compiler no longer emits efficiency notes for (FUNCALL X)
4820 when the type of X is uncertain under default optimization
4822 * fixed bug 276: mutating a binding of a specialized parameter to a
4823 method to something that is not TYPEP the specializer is now
4825 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4826 exhibit the required behaviour on the x86 platform. (thanks to
4827 Peter van Eynde, Eric Marsden and Bruno Haible)
4828 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4829 even for difficult arguments. (reported by Peter Graves)
4830 * fixed bug 141a: the backquote printer now descends quoted
4832 * fixed another bug in backquote printing: no more destructive
4833 modification of the form's list structure. (reported by Brian
4835 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4836 move between its address being taken and the call to
4837 interrupt_thread, fixing a crashing race condition.
4838 * the SB-POSIX contrib implementation has been adjusted so that it
4839 no longer exhibits ridiculously poor performance when constructing
4840 instances corresponding to C structs.
4842 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4843 * minor incompatible change: the sb-grovel contrib now treats C
4844 structures as alien (in the sense of SB-ALIEN) objects rather than
4845 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4846 has implications for memory management of client code
4847 (sb-grovel-returned objects must now be manually managed) and for
4848 type safety (alien objects now have full types).
4849 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4850 used to control emission of compiler diagnostics, rather than the
4851 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4852 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4853 quality should be considered deprecated.
4854 * install.sh now installs the user manual as well
4855 * (not quite a new documentable feature, but worth considering in
4856 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4857 beginnings of a semantically meaningful condition hierarchy is
4858 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4860 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4861 designator as the defaults argument.
4862 * fixed bug: Displaced arrays whose displaced-to array has become
4863 too small now cause ARRAY-DIMENSION to signal an error, providing
4864 for safer bounds-checking. (reported by Bruno Haible)
4865 * fixed bug: DEFCLASS slot definitions with identical :READER and
4866 :WRITER names now signal a reasonable error. (reported by Thomas
4868 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4870 * fixed bug: Invalid slot specification errors now print correctly.
4871 (thanks to Zach Beane)
4872 * fixed bug 320: Shared to local slot value transfers in class
4873 redefinitions now happen corrently from superclasses as
4874 well. (reported by Bruno Haible)
4875 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4877 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4878 improper lists correctly. (reported by Bruno Haible)
4879 * fixed bug 313: source-transform for <fun-name> was erroneously
4880 applied to a call of a value of a variable with name <fun-name>.
4881 (reported by Antonio Menezes Leitao)
4882 * fixed bug 307: The obsolete instance protocol ensures that
4883 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4884 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4885 remove dead unknown-values globs from the middle of the stack.
4886 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4887 easier to resume long computations after using *BREAK-ON-SIGNALS*
4888 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4889 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4890 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4891 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4892 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4893 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4895 * fixed a (fairly theoretical) bug in string printing: if
4896 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4897 does not have array-element-type equal to the most general string
4899 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4900 function name. (thanks to Nikodemus Siivola)
4901 * fixed bug: compile-time format string checker failed on
4902 non-closed ~{. (reported by Thomas F Burdick)
4903 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4904 don't warn on legal loop code involving more than one aggregate
4905 boolean. (thanks to Nikodemus Siivola)
4906 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4907 in keyword position to MAKE-PACKAGE was not being reported as
4909 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4910 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4912 * fixed bugs 280 and 312: the checking for multiple definitions in a
4913 file is less likely to become confused by uses of inline
4915 * fixed bug: the #S reader macro performs the keyword coercion
4916 specified for slot names. (reported by Kalle Niemitalo)
4917 * fixed bug: lambda lists may contain symbols whose names start with
4918 & but are not lambda-list-keywords; their occurrence triggers a
4920 * fixed bug 321: define-method-combination argument lambda lists do
4921 not cause invalid code to be generated when &optional or &aux
4922 variables have default values. (reported by Bruno Haible)
4923 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4924 have CLOS classes; this appears also to have fixed reported
4925 instability in stack exhaustion detection.
4926 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4927 MUFFLE-WARNING when no associated restart is present is now
4929 * optimization: rearranged the expansion of various defining macros
4930 so that each expands into only one top-level form in a
4931 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4933 * optimization: used a previously little-used slot in symbols to
4934 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4936 * fixed some bugs revealed by Paul Dietz' test suite:
4937 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4939 ** Fixed an optimization bug related to inheritance of initforms
4940 from local to shared slots.
4941 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4942 ** CAST optimizer forgot to flush argument derived type.
4943 ** print/read consistency on floats is now orders of magnitude
4944 more likely. (thanks also to Bruno Haible for a similar report
4946 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4947 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4948 for objects of type REAL. Make it so.
4949 ** SXHASH is specified (infelicitously) to respect similarity,
4950 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4951 it so. (thanks to Markus Ziegler)
4952 ** on the Alpha, the compiler succeeds in compiling functions
4953 returning a known number of arguments greater than 63.
4954 ** fixed handling of invalid NIL arguments in keyword position
4956 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4958 ** provided a readably-printable representation for RANDOM-STATE
4960 ** ensured that pathnames, where they have a namestring, always
4961 print using #P"..." syntax.
4963 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4964 * Support for the forthcoming 2.0 version of the NetBSD kernel
4965 running on x86 hardware has been added. (thanks to Perry
4966 E. Metzger most immediately, and others for their past work)
4967 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4968 current release version; SBCL's OpenBSD support had been broken
4969 since about the time of OpenBSD's switch to ELF binary format.)
4970 * [placeholder for DX summary]
4971 ** user code with &REST lists declared dynamic-extent, under high
4972 speed or space and low safety and debug optimization policy.
4973 * The manual has been converted to Texinfo format and the debugger
4974 chapter from the cmucl manual has been added.
4975 * A facility has been added to extract documentation strings from
4976 sbcl and store them as Texinfo-formatted snippets for inclusion in
4977 the manual (via Texinfo's @include directive)
4978 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4979 the test case to Dave Roberts)
4980 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4981 pointers. (reported by Sean Ross)
4982 * bug fix: PROFILE output is printed nicely even for large numerical
4983 values. (thanks to Zach Beane)
4984 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4985 greater than 32 handle EOF correctly.
4986 * bug fix: on X86 an immediate argument of the IMUL instruction is
4987 correctly printed in disassembly. (thanks to Lutz Euler)
4988 * bug fix: class slots in redefined classes preserve their old
4989 values. (thanks to Bruno Haible and Nikodemus Siivola)
4990 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4991 succeeds. (reported by Marco Baringer)
4992 * fixed some bugs revealed by Paul Dietz' test suite:
4993 ** READ-SEQUENCE now works on ECHO-STREAMs.
4994 ** RATIONALIZE works more according to its specification. (thanks
4997 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4998 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4999 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5000 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5001 should matter to you only if you rebind the printer control
5002 variables and then find you want different bindings in the
5003 debugger than in the ordinary execution of your program.)
5004 * The runtime build system has been tweaked to support building
5005 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5006 assembler and linker. (thanks to Nikodemus Siivola)
5007 * Unbound, undefined, undeclared variables now trigger full
5008 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5009 more often programmer error than deliberate exploitation of undefined
5011 * optimization: the hash algorithm for strings has changed to one
5012 that is less vulnerable to spurious collisions. (thanks to Juho
5014 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5015 needless bounds checking. (thanks to Juho Snellman)
5016 * optimization: implemented multiplication as a modular
5017 (UNSIGNED-BYTE 32) operation on the PPC backend.
5018 * fixed some bugs revealed by Paul Dietz' test suite:
5019 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5021 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5022 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5023 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5025 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5027 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5029 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5030 their output stream on EOF from read.
5031 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5032 have been read to end-of-file.
5033 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5035 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5036 description of determination of which consecutive characters
5038 ** Printing the "Space" character with escaping on now yields "#\\ ",
5039 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5040 ** Reading floating-point numbers with *READ-BASE* set to a number
5041 less than 10 works correctly.
5042 ** Reading floating-point numbers with *READ-BASE* set to a number
5043 more than 10 works correctly.
5044 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5045 the readtable currently in effect.
5047 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5048 * minor incompatible change: parsing of namestrings on a physical
5049 (Unix) host has changed; numbers after the final #\. in a
5050 namestring are no longer interpreted as a version field. This is
5051 intented to be largely invisible to the user, except that the
5052 meaning of the namestring "*.*.*" has changed: it now refers to a
5053 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5054 should usually be replaced by
5055 (make-pathname :name :wild :type :wild :version :wild)
5056 with the added benefit that this is more likely to be portable.
5057 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5058 option to OPEN now signals an error if the file being opened
5059 exists; this may have an impact on existing code.
5060 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5061 signals received, on the PowerPC platforms (both Linux and
5062 Darwin). (thanks to Pierre Mai for pointing out the location of
5064 * several fixes on OS X: The system now builds and runs cleanly on
5065 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5066 (thanks to Brian Mastenbrook)
5067 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5068 second-resolution: integer multiples of 1/3600 between -24 and 24.
5069 (thanks to Vincent Arkesteijn)
5070 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5071 type when called with 1 argument; PEEK-CHAR checked type of
5072 PEEK-TYPE only after having read first character from a
5073 stream. (reported by Peter Graves)
5074 * bug fix: the garbage collector now has much better locality
5075 behaviour, and in particular no longer treats all memory as being
5076 exhausted when many small objects point to each other in a deeply
5078 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5079 recognized as being TYPEP their class.
5080 * bug fix: the PUSHNEW documentation string has been corrected.
5081 (thanks to Vincent Arkesteijn)
5082 * bug fix: defaulting of the value for the last of an atypically
5083 large number of multiple values being bound was not being
5084 performed correctly on the Alpha or PPC platforms
5085 * optimization: implemented multiplication as a modular
5086 (UNSIGNED-BYTE 32) operation on the x86 backend.
5087 * optimization: SEARCH on simple-base-strings can now be open-coded.
5088 (see also contrib/compiler-extras.lisp for inspiration for
5089 teaching the compiler about the Boyer-Moore algorithm).
5090 * value, returned by MAX (and MIN) called with several EQUALP, but
5091 not EQL, arguments now does not depend on compiler settings.
5092 * fixed some bugs revealed by Paul Dietz' test suite:
5093 ** in stack analysis liveness information is propagated from
5094 non-local entry points.
5095 ** pathwise CAST removing failed when the CAST node did not start
5097 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5098 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5100 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5101 host is already defined.
5102 ** RENAME-FILE works on streams instead of signalling an internal
5104 ** PEEK-CHAR uses the current readtable when determining whether
5105 or not a character is whitespace.
5106 ** MERGE-PATHNAMES handles the case when the pathname does not
5107 specify a name while the default-pathname specifies a version.
5108 ** Pathnames now stand a better chance of respecting print/read
5110 ** Attempting to use standardized file system operators with a
5111 pathname with invalid :DIRECTORY components signals a
5113 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5115 ** DIRECTORY on logical pathnames is more correct.
5116 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5117 signal a TYPE-ERROR if their argument is not a stream.
5118 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5119 designator argument does not designate a stream.
5120 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5121 examining the synonym.
5122 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5124 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5125 element-type larger than ([UN]SIGNED-BYTE 32).
5127 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5128 * When built with the :SB-FUTEX feature, threaded builds now take
5129 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5130 for faster/more reliable mutex and condition variable support.
5131 * Incompatible change (but one you probably shouldn't have been using
5132 anyway): the interface and code for arbitrating between multiple
5133 threads in the same user session has been redesigned.
5134 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5135 error when called without an explicit environment argument.
5136 (thanks to Nikodemus Siivola)
5137 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5138 confused about their position. (thanks to Adam Warner and Gerd
5140 * bug fix: Pretty printing backquoted forms with unquotations in the
5141 argument list position of various code constructs such as LAMBDA
5142 now works correctly. (reported by Paul Dietz)
5143 * bug fix: Pretty printing unquotations no longer loses all
5144 stream position information.
5145 * optimization: performance of string output streams is now less
5146 poor for multiple small sequence writes.
5147 * optimization: performance of CSUBTYPEP in the presence of complex
5148 expressions involving CONS and NOT many times has been improved.
5149 (reported by Paul Dietz)
5150 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5152 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5153 streams for the REPL, for the debugger, and so on. (thanks to
5155 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5156 * fixed some bugs revealed by Paul Dietz' test suite:
5157 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5158 is ignored if it is too small, rather than propagating through
5159 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5160 ** extremely complex negations of CONS types were not being
5161 sufficiently canonicalized, leading to inconsistencies in
5163 ** VALUES tranformer lost derived type.
5165 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5166 * fixed a bootstrapping bug: the build process no longer assumes
5167 that the various BOOLE-related constants have the same value in
5168 host and target lisps. (noted by Paul Dietz' test suite on an
5169 SBCL binary built from CLISP)
5170 * The system can now be dynamically linked on the MIPS platform,
5171 which enables dynamic loading of foreign code from Lisp. (thanks
5172 to Ralf Baechle for discussions on the MIPS ABI)
5173 * The system now records debugging information for its own source
5174 files in a filesystem-position-independent manner, relative to
5175 the "SYS" logical host.
5176 * fixed a compiler bug: MV-LET convertion did not check references
5177 to the "max args" entry point. (reported by Brian Downing)
5178 * tweaked disassembly notes to be less confident about proclaiming
5179 some instruction as an LRA. (thanks to Brian Downing)
5180 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5181 now each have their own history, command character, and other
5182 characteristics. (thanks to David Lichteblau)
5183 * fixed some bugs revealed by Paul Dietz' test suite:
5184 ** compiler failure in compiling LOGAND expressions including a
5186 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5187 shift greater than 32.
5188 ** FLUSH-DEST did not mark blocks for type check regeneration.
5189 ** HANDLER-CASE failed to accept declarations in handler clauses
5190 in some circumstances.
5192 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5193 * New code in contrib/sb-introspect (still probably not entirely
5194 stable yet) provides some support for smart Lisp development
5195 environments like SLIME.
5196 * The conditions signalled for errors occurring when loading .fasl
5197 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5198 in a way which should help ASDF recover gracefully.
5199 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5200 stuff has been cleaned up. If you code contrib/ stuff, this might
5201 affect you, and you can look at contrib/README, contrib/STANDARDS,
5202 and/or the 0.8.4.27 diff to check.
5203 * In full calls the compiler now does not generate checks for declared
5204 argument types for all arguments.
5205 * various threading fixes
5206 ** and some experimental patches which didn't make it into
5207 the main tree for this release, but which are shipped in
5208 contrib/experimental-thread.patch as a possible fix for some
5209 failures (deadlock, spinning...) in GC-intensive multithreaded
5211 * fixed PPC build problem (source code incompatibility of different
5212 library versions): added offsetof() hackery which attempts to divine
5213 where glibc maintainers put uc_mcontext today
5214 * fixed bug 282: compiler does not trust type assertions while passing
5215 arguments to a full call.
5216 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5217 &OPTIONAL VALUES type parameter.
5218 * fix bug 214: algorithm for noting rejected templates is now more
5219 similar to that of template seletion. (also reported by rydis on
5221 * fixed bug 141b: printing backquoted information readably and prettily
5222 inserts a space where necessary.
5223 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5224 (CHARACTER 10) are now reported as errors, rather than propagated
5225 as unknown types. (reported by piso on #lisp)
5226 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5227 with values NIL and :ERROR. (thanks to Milan Zamazal)
5228 * fixed bug 191c: CLOS now does proper keyword argument checking as
5229 described in CLHS 7.6.5 and 7.6.5.1.
5230 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5231 longer raise an error; further, using a list as a for-as-arithmetic
5232 counter now raises a meaningful error.
5233 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5234 now understood by sequence creation functions such as MAKE-SEQUENCE
5236 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5237 a STRING-INPUT-STREAM.
5238 * compiler enhancement: SIGNUM is now better able to derive the type
5240 * type declarations inside WITH-SLOTS are checked. (reported by
5242 * fixed some bugs revealed by Paul Dietz' test suite:
5243 ** incorrect optimization of TRUNCATE for a positive first
5244 argument and negative second.
5245 ** compiler failure in let-convertion during flushing dead code.
5246 ** compiler failure while deriving type of TRUNCATE on an
5247 interval, containing 0.
5248 ** ASH of a negative bignum by a negative bignum count now returns
5250 ** intersection of CONS types now canonicalizes properly, fixing
5251 inconsistencies in SUBTYPEP.
5253 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5254 * incompatible change: The --disable-debugger command line
5255 option now clobbers the debugger at a more fundamental
5256 level, by redefining #'INVOKE-DEBUGGER instead of by
5257 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5258 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5259 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5260 enter the debugger REPL and then suffer recursive errors
5261 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5262 while under the new system, BREAK in --disable-debugger mode
5263 terminates the system just as an unhandled error would.
5264 * fixed compiler performance when processing loops with a step >1;
5265 * bug fix: DOCUMENTATION now retrieves generic function
5266 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5267 support has been systematized, and now supports the methods
5268 specified by ANSI, along with a default method and a method for
5269 slot documentation. (reported by Nathan Froyd)
5270 * bug fix: effective methods associated with a generic function are
5271 no longer cached over a change of that generic function's method
5272 combination. (reported by Andreas Fuchs)
5273 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5274 names a non-existent directory. (thanks to Andreas Fuchs)
5275 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5276 the PPC platform, lead to stack corruption; this has been fixed.
5277 (reported by Rainer Joswig)
5278 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5279 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5280 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5281 arithmetic in general, is now much more reliable on the PPC
5283 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5284 platform now returns the right answer.
5285 * optimization: restored some effective method precomputation in
5286 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5287 precomputation is now tunable.
5288 * optimization: compiler-internal data structure use has been
5289 reviewed, and changes have been made that should improve the
5290 performance of the compiler by about 20%.
5291 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5292 simple-base-strings and simple-bit-vectors is improved.
5293 * optimization: the optimization of 32-bit logical and arithmetic
5294 functions introduced in version 0.8.3 on the x86 has been
5295 implemented on the mips, ppc and sparc platforms; an
5296 implementation of the same facility, but for 64-bit arithmetic,
5297 has been added for the alpha.
5298 * microoptimization: the compiler is better able to make use of the
5299 x86 LEA instruction for multiplication by constants.
5300 * bug fix: in some situations compiler did not report usage of
5301 generic arithmetic in (SPEED 3) policy.
5302 * bug 145b fix: compiler used wrong type specifier while converting
5303 MEMBER-types to numeric.
5304 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5306 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5307 index argument now works properly on the Alpha platform.
5308 * bug fix: floating point exception treatment on the Alpha platform
5310 * bug fix: FILE-POSITION works much better on string input and
5311 output streams. (thanks to Nikodemus Siivola)
5312 * bug fix: many threading/garbage collection symptoms sorted.
5313 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5314 might be pseudo-atomic.
5315 * internal change: Stopping for GC is now done with signals not
5316 ptrace. GC is now done in whichever thread wanted it, instead of
5318 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5320 * bug fix: result form in DO is not contained in the implicit
5322 * incompatible change: ICR structure is changed; the value part of
5323 CONTINUATION is now called LVAR; corresponding functions are
5324 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5325 * added type deriver for ISQRT (thanks to Robert E. Brown).
5326 * bug fix: better support for loading from the command line when an
5327 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5329 * fixed some bugs revealed by Paul Dietz' test suite:
5330 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5331 ** ROUND and FROUND now give the right answer when given very
5332 small float arguments.
5333 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5335 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5336 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5337 ** LCM should return a non-negative integer.
5338 ** PARSE-INTEGER returned the index of a terminator instead of the
5339 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5340 ** PARSE-INTEGER returned an incorrect index being applied to a
5342 ** LCM with two arguments of 0 returns 0 rather than signalling
5344 ** unsigned addition of a 32-bit constant with the high bit set no
5345 longer causes an internal compiler error on the x86.
5346 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5347 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5348 with negative last argument.
5349 ** byte specifiers with zero size and position no longer cause
5350 an error during type derivation.
5351 ** bignum multiplication on the Alpha platform now returns the
5353 * porting: The system now builds on SuSE AMD64, although it still
5354 generates a 32-bit binary.
5355 * .fasl file incompatibility: The fasl file version number has
5356 been incremented (because of the changes to internal compiler
5357 data structures referred to above).
5359 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5360 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5361 more accurately, on the Darwin kernel running on PowerPC hardware.
5362 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5363 * Compiler code deletion notes now signal a condition of type
5364 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5365 an associated MUFFLE-WARNING restart.
5366 * The compiler now performs limited argument count validation of
5367 constant format strings in FORMAT, and where appropriate in ERROR,
5368 CERROR and WARN. (thanks to Gerd Moellmann)
5369 * New ASDF-INSTALL contrib can be used for automatic download and
5370 installation of third-party Lisp code from CCLAN or other sites
5372 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5373 which forces another thread to execute a function supplied by the
5375 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5376 now accept and act upon their :ELEMENT-TYPE keyword argument.
5377 (reported by Martin Atzmueller, Edi Weitz)
5378 * bug fix: FILE-POSITION now accepts position designators up to
5379 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5380 is the greater. (thanks to Patrik Nordebo)
5381 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5382 Kalle Olavi Niemitalo)
5383 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5384 printable. (reported by Eric Marsden)
5385 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5386 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5387 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5388 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5389 (thanks to Stig Sandoe)
5390 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5391 UNREAD-CHAR now correctly includes the unread character in the
5392 target sequence. (thanks to Gerd Moellmann)
5393 * bug fix in threaded builds: the system can now be suspended and
5394 resumed by shell job control with minimal disruption.
5395 * bug fixes in times and timezones >2038AD
5396 * better handling of "where is GNU make?" problem in build scripts
5397 (thanks to Nikodemus Siivola)
5398 * new optimization: inside a named function any reference to a
5399 function with the same name is considered to be a self-reference;
5400 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5401 optimization quality.
5402 * new optimization on x86: logical functions and + now have
5403 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5404 used when the result is truncated to 32 bits.
5405 * VALUES declaration is partially enabled.
5406 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5407 * fixed some bugs revealed by Paul Dietz' test suite:
5408 ** The system now obeys the constraint imposed by
5409 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5410 types form a lattice under type intersection.
5411 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5412 ** ASSOC now ignores NIL elements in an alist.
5413 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5414 and (1+ MOST-POSITIVE-FIXNUM) answers.
5415 ** The addition of a method with invalid qualifiers to a generic
5416 function does not cause an error to be signalled immediately;
5417 a warning is signalled, and the error is generated only on
5418 calling the generic function.
5419 * changed .fasl file version number, in part to add type codes for
5420 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5421 obscure ANSI requirements
5423 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5424 * fixed bug 148: failure to inline-expand a local function left
5425 garbage, confusing the compiler.
5426 * fixed bugs 3cd: structure slot readers perform type check if the
5427 slot can have an invalid value (i.e. it is either not initialized
5428 or can be written with a less specific slot writer).
5429 * bug fix: the compiler now traps array references to elements off
5430 the end of an array; previously, the bounds checking in some
5431 circumstances could go off-by-one.
5432 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5434 * type declarations for array element types now obey the description
5435 on the CLHS page "Declaration TYPE", as per discussions on
5436 sbcl-help around 2003-05-08. This means that a declaration
5437 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5438 declaration, all references to BAR will be asserted or assumed
5439 (with THE, so dependent on compiler policy) to involve objects of
5440 type FOO. Note that no such declaration is implied in
5441 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5442 * declared types of functions from the "Conditions"
5443 chapter. (reported by Paul Dietz)
5444 * bug fix: CERROR accepts a function as its first argument.
5445 * bug fix: NTH an NTHCDR accept a bignum as index
5446 arguments. (reported by Adam Warner)
5447 * optimization: character compare routines now optimize comparing
5448 against a constant character. (reported by Gilbert Baumann)
5449 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5450 argument now works properly on the MIPS platform.
5451 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5452 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5453 declared to have a functional type, does not cause an error
5455 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5456 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5457 * fixed bug: if last continuation of a deleted block has a
5458 destination, this destination should be deleted too. (reported by
5460 * fixed a bug in the bootstrap process: the host compiler's values
5461 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5462 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5463 test case from Patrik Nordebo)
5464 * improved the ability of the disassembler on the PPC platform to
5465 provide helpful disassembly notes.
5466 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5467 the class in more cases than previously.
5468 * bug fix: FILE-POSITION now understands :START and :END for
5469 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5470 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5471 8) data. (thanks to David Lichteblau)
5472 * bug fix: it is possible to add a method to a generic function
5473 without lambda list.
5474 * bug fix: reader failed to signal END-OF-FILE inside an
5475 object representation. (reported by Nikodemus Siivola)
5476 * fixed some bugs revealed by Paul Dietz' test suite:
5477 ** LAST and [N]BUTLAST should accept a bignum.
5478 ** condition slot accessors are methods.
5479 ** (VECTOR NIL) is a subtype of STRING.
5481 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5482 * minor incompatible change: some nonsensical specialized lambda
5483 lists (used in DEFMETHOD) which were previously ignored now signal
5485 * minor incompatible change: the system is now aware of the types of
5486 variables in the COMMON-LISP package, and will signal errors for
5487 most violations of these type constraints (where previously they
5488 were silently accepted).
5489 * minor incompatible change: COMPILE-FILE now uses the freedom
5490 afforded (ANSI 3.2.2.3) to use derived function types for
5491 functions defined in the same file. This also permits the system
5492 to warn on static type mismatches and function
5493 redefinition. (Currently it does not work with high DEBUG level.)
5494 * minor incompatible change: VALUES declaration is disabled.
5495 * When issuing notes, the compiler now signals a condition of type
5496 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5497 restart for use in user handlers. It is expected that the
5498 COMPILER-NOTE condition will eventually become a condition
5499 supertype to a hierarchy of note types, which will then be
5500 handleable in a similar fashion. However, at the moment, no such
5501 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5502 but it's an implementation detail, not a classification for the
5504 * Changes in type checking closed the following bugs:
5505 ** type checking of unused values (192b, 194d, 203);
5506 ** template selection based on unsafe type assertions (192c, 236);
5507 ** type checking in branches (194bc).
5508 * A short form of VALUES type specifier has ANSI meaning (it has
5509 increased the number of situations when SBCL cannot perform type
5511 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5512 keywords or constants is permissible.
5513 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5514 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5515 classes. (thanks to Antonio Martinez)
5516 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5517 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5518 argument to a pretty-print stream. Instead, it leaves any such
5519 operations to DESCRIBE-OBJECT methods.
5520 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5522 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5523 lambda lists. (thanks to David Lichteblau)
5524 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5525 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5526 (thanks to Gerd Moellmann)
5527 * fixed bug 246: increased compilation speed of long
5528 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5530 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5532 * DEFCONSTANT now throws a condition of type
5533 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5534 constant to a non-EQL value; CONTINUE and ABORT restarts
5535 respectively change and preserve the value.
5536 * fixed bug 63: The code walker, part of the implementation of CLOS,
5537 is now better at handling symbol macros.
5538 * bug fix: There is no longer an internal implementation type named
5539 CL:LENGTH. (reported by Raymond Toy)
5540 * bug fix: In macro-like defining macros/special operators the
5541 implicit block does not enclose the lambda list.
5542 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5543 enclosed in parentheses) are not suitable as type specifiers, and
5544 their use properly signals an error now.
5545 * bug fix: An argument count mismatch for a type specifier in code
5546 being compiled no longer causes an unhandled error at compile
5547 time, but signals a compile-time warning.
5548 * fixed simple vector readable printing
5549 * bug fix: DESCRIBE takes more care over whether the class
5550 precedence list slot of a class is bound before accessing it.
5551 (reported by Markus Krummenacker)
5552 * bug fix: FORMATTER can successfully compile pretty-printer format
5553 strings which use variants of the ~* directive inside.
5554 * bug fix: SEARCH now applies its TEST predicate to the elements of
5555 the arguments in the correct order. (thanks to Wolfhard Buss)
5556 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5557 in type inference. (thanks to Robert E. Brown)
5558 * bug fix: Reading in symbols with an explicit package name of ""
5559 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5560 * fixed some bugs revealed by Paul Dietz' test suite:
5561 ** NIL is now allowed as a structure slot name.
5562 ** Arbitrary numbers, not just REALs, are allowed in certain
5563 circumstances in LOOP for-as-arithmetic clauses.
5564 ** Multiple class redefinitions before slot access no longer
5565 causes a type error.
5566 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5567 association between the name and a class.
5568 ** Generic functions with non-standard method-combination and over
5569 five methods all of which return constants no longer return NIL
5570 after the first few invocations. (thanks to Gerd Moellmann)
5571 ** CALL-NEXT-METHOD with no arguments now passes the original
5572 values of the arguments, even in the presence of assignment.
5573 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5575 ** DISASSEMBLE works with closures and funcallable instances.
5576 ** ADD-METHOD now returns the generic function, not the new method.
5577 ** FIND-METHOD signals an error if the lengths of the specializers
5578 is incompatible with the generic function, even if the ERRORP
5580 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5581 which its argument is a member.
5582 ** DEFCLASS only redefines the class named by its class-name
5583 argument if that name is the proper name of the class;
5584 otherwise, it creates a new class.
5585 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5586 of the UNBOUND-SLOT condition to the name of the slot.
5587 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5588 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5589 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5590 SLOT-MAKUNBOUND in the specified fashion.
5592 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5593 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5594 cross-compilation host. As a consequence, we can now bootstrap our
5595 way up to SBCL starting with a bare gcc toolchain and human-readable
5596 source code (first the source to CLISP, then the source to SBCL).
5597 * A contributed module containing a partial implementation of the
5598 simple-streams interface has been included. (thanks to Rudi
5600 * A contributed module implementing the RFC1321 Message Digest
5601 Algorithm, known as MD5, has been included.
5602 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5603 no longer has any effect, as the code controlled by this feature
5604 has been deleted. (As far as we know, no-one has ever built using
5605 this feature, and its semantics were confused in any case).
5606 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5607 work on conditions (as required by the ANSI specification),
5608 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5609 expected behaviour on conditions. Users should note, however,
5610 that such behaviour is not required by the ANSI specification,
5611 and so use of this behaviour may render their code unportable.
5612 * fixed some bugs revealed by Paul Dietz' test suite:
5613 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5615 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5616 ** SXHASH on condition objects no longer returns NIL.
5617 ** :ALLOCATION :CLASS slots are better treated; their values are
5618 updated on class redefinition, and initforms inherited from
5619 superclasses are applied.
5620 ** REMOVE-METHOD returns its generic function argument even when
5621 no method was removed.
5622 ** SHARED-INITIALIZE now initializes the values of the requested
5623 slots, including those with :ALLOCATION :CLASS.
5624 ** ALLOCATE-INSTANCE now works on structure classes defined via
5625 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5627 ** SLOT-EXISTS-P now works on conditions, as well as structures
5629 ** MAKE-LOAD-FORM now has the required methods on
5630 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5631 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5632 keyword, and now implements the SLOT-NAMES argument.
5633 ** methods with &OPTIONAL arguments no longer allow too many
5634 arguments to be passed in the call without error.
5635 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5636 option is consistent with the required arguments of the generic
5637 function lambda list.
5638 * bug fix: REQUIRE accepts a string designator. (Thanks to
5640 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5641 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5642 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5643 * bug fix: The compiler now checks for duplicated variables in macro
5645 * bug fix: SETQ on globals returns the correct value.
5646 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5647 not a COMPILER-ERROR (followed by some other strange error on
5648 choosing the CONTINUE restart).
5649 * bug fix: make.sh and friends are now more consistent in the way that
5650 they look for GNU "make".
5652 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5653 * experimental native threads support (on x86 Linux >=2.4 only).
5654 This is not compiled in by default: you need to add :SB-THREAD to
5655 the target features. See the "Beyond ANSI" chapter of the manual
5657 * fix for longstanding nonANSIism: The old distinction between
5658 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5659 The return value from CL:FIND-CLASS is now a CLOS class, and
5660 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5661 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5662 * An interface to the MetaObject Protocol, as described in Kiczales,
5663 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5664 MIT Press, 1991, is available from the SB-MOP package.
5665 * incompatible change: the SB-PCL package should now be considered
5666 a private implementation detail, and no longer a semi-private MOP
5668 * minor incompatible change: due to rearrangement for threads, the
5669 control stack and binding stack are now allocated at arbitrary
5670 addresses instead of being hardcoded per-port. Users affected by
5671 this probably have to be doing advanced things with shared
5672 libraries, and will know who they are.
5673 * minor incompatible change: Previously, all --eval forms used were
5674 processed with READ before any of them were processed with EVAL.
5675 Now each --eval form is processed with both READ and EVAL before
5676 the next --eval form is processed. (Thus package operations like
5677 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5678 work as the user might reasonably expect.)
5679 * minor incompatible change: *STANDARD-INPUT* is now only an
5680 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5682 * minor incompatible change: Y-OR-N-P is now character-oriented,
5683 not line oriented. Also, YES-OR-NO-P now works without errors.
5684 (thanks to Antonio Martinez)
5685 * sb-aclrepl module improvements: an integrated inspector, added
5686 repl features, and a bug fix to :trace command.
5687 * Known functions, which cannot be open coded by the backend, are
5688 considered to be able to check types of their arguments. (fixing
5689 a bug report by Nathan J. Froyd)
5690 * fixed a bug in computing method discriminating functions: It is
5691 now possible to define methods specialized on classes which have
5692 forward-referenced superclasses. (thanks to Gerd Moellmann)
5693 * fixed evaluation order in optional entries (reported by Gilbert
5695 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5696 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5697 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5698 required-by-AMOP NAME argument, as well as CLASS and
5699 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5700 * fixed bug 20: DEFMETHOD can define methods using names that are
5701 not the proper names of classes to designate class specializers.
5702 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5703 Unix file descriptors, instead of blowing up. (thanks to Antonio
5705 * Garbage collection refactoring: user-visible change is that a
5706 call to the GC function during WITHOUT-GCING will not do garbage
5707 collection until the end of the WITHOUT-GCING. If you were doing
5708 this you were probably losing anyway.
5709 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5710 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5711 TYPEP the latter but not the former.
5712 * The compiler issues a full WARNING for calls to undefined functions
5713 with names from the CL package.
5714 * MAP-INTO for a vector destination is open coded. (reported by
5715 Brian Downing on c.l.l)
5716 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5717 documentation string.
5718 * fixed some bugs revealed by Paul Dietz' test suite:
5719 ** COPY-ALIST now signals an error if its argument is a dotted
5721 ** Condition slots are now accessed more correctly in the presence
5722 of multiple initargs for a given slot.
5723 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5724 exclude restarts of the same name associated with a different
5726 ** DEFCLASS of forward-referenced classes with another
5727 forward-referenced class in the superclasses list no longer
5729 ** Condition slots are now initialized once each, not multiple
5730 times. (thanks to Gerd Moellmann)
5731 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5733 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5734 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5735 arguments contain duplicated elements.
5736 ** RESTART-CASE understands local macros.
5737 ** RESTART-CASE associates exactly its own restarts with a condition.
5738 ** ENDP in safe mode checks its argument to be of type LIST.
5739 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5740 in question is unbound.
5741 ** Optimized MAKE-INSTANCE functions no longer cause internal
5742 assertion failures in the presence of duplicate initargs.
5743 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5744 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5745 propagated even in the ctor optimized implementation of
5747 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5749 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5750 * a better implementation of SXHASH on (simple) bit vectors,
5751 measured both in execution speed and in distribution of results
5752 over the positive fixnums, has been installed. Likewise, a better
5753 implementation of EQUAL for simple bit vectors is now available.
5754 * fixed CEILING optimization for a divisor of form 2^k.
5755 * fixed bug 240 (emitting extra style warnings "using the lexical
5756 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5757 by Antonio Martinez)
5758 * fixed SXHASH, giving different results for NIL depending on type
5759 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5760 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5761 variable. (found by Rolf Wester)
5762 * SBCL does not ignore type declarations for special
5763 variables. (reported by rif on c.l.l 2003-03-05)
5764 * some bug fixes in contrib/sb-aclrepl/
5765 * fixed some bugs revealed by Paul Dietz' test suite:
5766 ** a bug in the CONS type specifier, whereby the CAR and CDR
5767 types got intertwined, has been fixed;
5768 ** the type system is now able to reason about the interaction
5769 between INTEGER and RATIO types more completely;
5770 ** APPEND, [N]REVERSE and NRECONC check that those their
5771 arguments, which must be proper lists, are really so;
5772 ** An array specialized to be unable to hold elements has been
5773 implemented, as required -- yes, really -- by ANSI;
5774 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5775 on malformed property lists;
5777 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5778 * incompatible packaging change: in line with Unix convention,
5779 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5780 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5781 * REQUIRE and PROVIDE are now optionally capable of doing something
5782 useful. See the documentation string for REQUIRE.
5783 * infrastructure for a managed SBCL contrib system: contributed
5784 modules in this release include:
5785 ** the ASDF system definition facility;
5786 ** an interface to the BSD Sockets API;
5787 ** an ACL-like convenience interface to the repl;
5788 (thanks to Kevin Rosenberg)
5789 ** an implementation of ROTATE-BYTE, with efficient implementation
5791 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5792 gives a closer approximation to the right answer than previously.
5793 (thanks to Raymond Toy)
5794 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5795 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5796 optional environment arguments, as required by ANSI.
5797 * fixed bugs in other functions taking environment objects, allowing
5798 calls with an explicit NIL environment argument to be compiled
5800 * fixed bug 228: primary return values from
5801 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5802 COMPILE or FUNCTION.
5803 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5804 :TYPE will no longer signal errors on innocuous objects.
5805 * fixed bug 231b: SETQ is better at respecting type declarations in
5806 the lexical environment.
5807 * fixed a bug in DEFCLASS: classes named by symbols with no or
5808 unprintable packages can now be defined.
5809 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5810 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5811 * fixed compiler failure related to checking types of functions.
5812 (reported by Robert E. Brown)
5813 * the compiler is now much more consistent in its error-checking
5814 treatment of bounding index arguments to sequence functions: in
5815 (SAFETY 3) code, errors will be signalled in almost all cases if
5816 invalid sequence bounding indices are passed to functions defined
5817 by ANSI to operate on sequences.
5818 * fixed a bug in the build procedure: documentation of SBCL-specific
5819 packages is now preserved and available in the final Lisp image.
5820 * lifted FDEFINITION lookup out of loops in the implementation of
5821 many list operations. (thanks to Robert E. Brown)
5822 * fixed a bug in the reader: the #n# reader macro now works for
5823 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5824 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5825 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5826 E. Brown and Tony Martinez respectively)
5827 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5828 SLOT-BOUNDP: in particular, it is now able to optimize them much
5829 better, and is now not vulnerable to having packages renamed.
5830 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5831 always called when a slot is not present in an instance. (thanks
5833 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5834 longer signal an error on unreading a character following EOF on
5835 the previous constituent stream. (thanks to Tony Martinez)
5836 * fixed some bugs revealed by Paul Dietz' test suite:
5837 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5838 not just nonnegative fixnums;
5839 ** the logical bit-array operators such as BIT-AND now accept an
5840 explicit NIL for their "opt-arg" argument (to indicate a
5841 freshly-consed result bit-array);
5842 ** ELT now signals an error on an invalid sequence index in safe
5844 ** the type system is now cleverer about negations of numeric
5845 types, and consequently understands the BIGNUM and RATIO types
5847 ** the type system is now cleverer about the interaction between
5848 INTEGER and RATIO types: while bugs still remain, many more
5849 cases are accurately computed;
5850 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5851 if it is in the last clause;
5852 ** CONSTANTLY now correctly returns a side-effect-free function in
5854 ** DECLARE is no longer treated as a special-operator; in
5855 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5856 * incremented fasl file version number due to the change in the
5857 DEFSTRUCT-SLOT-DESCRIPTION structure.
5859 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5860 * minor incompatible change: code processed by the "interpreter" or
5861 EVAL now has a compilation optimization policy of (DEBUG 2)
5862 (changed from (DEBUG 1)) to improve debuggability of interactive
5863 development, and to allow the use of the debug RETURN command in
5865 * an experimental implementation of the RETURN command for the
5866 debugger has been included. (thanks to Frederik Kuivinen)
5867 * fixed bug 62: constraints were not propagated into a loop.
5868 * fixed bug in embedded calls of SORT (reported and investigated by
5870 * fixed some bugs revealed by Paul Dietz' test suite:
5871 ** printing and reading of arrays with some dimensions having
5872 length 0 (thanks to Gerd Moellmann);
5873 ** BOA constructor with &AUX argument without a default value does
5874 not cause a type error;
5875 ** CONSTANTP now returns true for all self-evaluating objects.
5877 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5878 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5879 accessors that are related by inheritance, as specified in the
5880 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5881 Valtteri Vuorikoski)
5882 * The compiler is now able to inline functions that were defined in
5883 a complex lexical environment (e.g. inside a MACROLET).
5884 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5886 * Support for the upcoming FreeBSD-5.0 release has been included.
5887 (thanks to Dag-Erling Smorgrav)
5888 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5889 effect when it is not in a toplevel context.
5890 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5891 stand a better chance of being correct. (thanks to Gerd
5893 * fixed bug in COERCE, which now signals an error on coercing a
5894 rational to a bounded real type which excludes the expected
5896 * The compiler is now able to derive types more accurately from the
5897 COERCE and COMPILE functions.
5898 * fixed bug 223: functional binding is considered to be constant
5899 only for symbols in the CL package.
5900 * fixed bug 231: SETQ did not check the type of a variable being set
5901 (reported by Robert E. Brown)
5902 * A new optimization for MAKE-INSTANCE has been included, fixing
5903 various bugs (including relating to :ALLOCATION :CLASS slots and
5904 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5906 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5907 ** As required by ANSI, LOOP now disallows anonymous collection
5908 clauses such as COLLECT I in conjunction with aggregate boolean
5909 clauses such as THEREIS (= I 1);
5910 ** LOOP now signals an error when any variable is reused in the
5911 same loop (including the potentially useful construct analogous
5912 to WITH A = 1 WITH A = (1+ A);
5913 ** IT is only a special loop symbol within the first clause of a
5914 conditional loop clause;
5915 ** LOOP with a typed iteration variable over a hashtable now
5916 signals a type error iff it should.
5917 * fixed some other bugs revealed by Paul Dietz' test suite:
5918 ** FILE-STREAM now names the class previously known as FD-STREAM;
5919 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5920 argument) no longer signals an error;
5921 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5922 of the slot symbol, rather than using the current package
5923 ((:CONC-NAME "") continues to intern the slot's name in the
5925 * incremented fasl file version number, because of the incompatible
5926 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5927 of the new implementation of DEFINE-COMPILER-MACRO.
5929 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5930 * Support for building SBCL for MIPS platforms running in
5931 little-endian mode has now been checked in, and basic
5932 functionality on said platforms verified.
5933 * minor incompatible change: PCL now records the pathname of a file
5934 in which methods and the like are defined, rather than its
5936 * minor incompatible change: TRUENAME now considers the truename of
5937 a file naming a directory to be the pathname with :DIRECTORY
5938 component indicating that directory.
5939 * minor incompatible change: a NAMED clause in the extended form of
5940 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5941 reason for the previous behaviour is unclear.
5942 * more systematization and improvement of CLOS and MOP conformance
5943 in PCL (thanks to Gerd Moellman and Pierre Mai):
5944 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5946 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5947 primary methods with no specializers;
5948 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5950 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5951 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5952 FORWARD-REFERENCED-CLASSes; error reporting on
5953 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5955 ** SXHASH on CLOS instances now uses a slot internal to the
5956 instance to return different numbers on distinct instances,
5957 while preserving the same return value through invocations of
5959 ** DEFMETHOD signals errors when methods with longer incongruent
5960 lambda lists are added to generic functions;
5961 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5962 CLASS, as specified in AMOP;
5963 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5964 on the order returned by the primary method for classes of
5965 class STANDARD-CLASS;
5966 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5967 * fixed some bugs shown by Paul Dietz' test suite:
5968 ** DOLIST puts its body in TAGBODY;
5969 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5971 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5972 value producing form;
5973 ** if more variables are given to PROGV than values, extra
5974 variables are bound and made to have no value;
5975 ** NSUBSTITUTE on list arguments gets the right answer with
5977 ** ELT signals an error of type TYPE-ERROR when the index argument
5978 is not a valid sequence index;
5979 ** LOOP signals (at macroexpansion time) an error of type
5980 PROGRAM-ERROR when duplicate variable names are found;
5981 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5982 ** FUNCALL of special-operators now cause an error of type
5984 ** PSETQ now works as required in the presence of side-effecting
5985 symbol-macro places;
5986 ** NCONC accepts any object as its last argument;
5987 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5989 ** loop-for-as-package does not require a package to be explicitely
5991 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5993 * fixed bug 166: compiler preserves "there is a way to go"
5994 invariant when deleting code.
5995 * fixed bug 172: macro lambda lists with required arguments after
5996 &REST arguments now cause an error to be signalled. (thanks to
5998 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5999 bug. (thanks to Matthew Danish)
6000 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6002 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6003 arguments are lexically rebound. (thanks to Gerd Moellmann and
6005 * fixed bug 194: error messages are now more informative when there
6006 is no primary method applicable in a call to a generic
6007 function. (thanks to Gerd Moellmann)
6008 * fixed bug in command line argument checking (thanks to Julian
6010 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6011 (thanks to Matthew Danish)
6012 * incremented fasl file version number, because of the
6013 SXHASH-related changes in the layout of CLOS data structures
6015 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6016 * minor incompatible change: The runtime (the Unix executable named
6017 "sbcl") is now much pickier about the .core files it will load.
6018 Essentially it now requires .core files to descend from the same
6019 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6020 as the runtime does. (The intent is to prevent the crashes which
6021 can occur, and which can even be reported as mysterious failures,
6022 when people patch the sources or change the build parameters
6023 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6024 sbcl and .core files.)
6025 * fixed bug: VALUES-LIST is no longer optimized away.
6026 * fixed bug 142: The FFI conversion of C string values to Lisp
6027 string values no longer conses excessively. (thanks to Nathan
6028 Froyd porting Raymond Toy's fix to CMU CL)
6029 * began to systematize and improve MOP conformance in PCL (thanks to
6030 Nathan Froyd, Gerd Moellman and Pierre Mai):
6031 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6033 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6034 ** FINALIZE-INHERITANCE is now called on class finalization;
6035 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6036 argument precedence order.
6037 * fixed bug 202: The compiler no longer fails on functions whose
6038 derived types contradict their declared type.
6039 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6040 so it can be non-toplevel.
6041 * The fasl file version number has changed (because of the new
6042 implementation of DEFMACRO).
6043 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6044 safe code, that any length requirement by their type-specifier
6045 argument is valid. The exceptions to this are described in bug
6047 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6048 functions now check the types of their inputs as required by ANSI.
6049 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6050 introduced symbol is DECLAREd to be SPECIAL.
6051 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6052 * fixed bug: :COUNT argument to sequence functions may be negative
6053 * fixed bug: body of DO-SYMBOLS may contain declarations
6054 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6055 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6056 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6057 symbol macro only once
6058 * fixed printing of call frame when argument list is unavailable
6059 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6060 * compiler no longer signals WARNING on unknown keyword
6063 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6064 * A beta-quality port to the mips architecture running Linux,
6065 based on the old CMUCL backend, has been made. It has been tested
6066 on a big-endian kernel, and works sufficiently well to be able to
6067 rebuild itself; it has not been tested in little-endian mode.
6068 * fixed an inconsistency between gencgc.c and purify.c which made
6069 dumping/loading .core files unreliable
6070 * fixed bug 120a: The compiler now deals correctly with IFs where
6071 the consequent is the same as the alternative, instead of
6072 misderiving the return type. (thanks to Alexey Dejneka)
6073 * fixed bug 113: Logical pathnames are now dumpable (the logical
6074 host is resolved at load-time, throwing an error if it is not
6076 * fixed bug 174: FORMAT's error message is slightly clearer when a
6077 non-printing character is used in a format directive.
6078 * fixed several bugs in compiler checking of type declarations, i.e.
6079 violations of the Python "declarations are assertions" principle
6080 (thanks to Alexey Dejneka)
6081 * fixed several bugs in PCL's error checking (thanks to Gerd
6083 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6085 * fixed bug in compilation of functions as first class values
6086 (thanks to Antonio Martinez-Shotton)
6087 * The compiler's handling TYPE-ERRORs which it can prove will
6088 inevitably happen at runtime has been cleaned up and corrected
6089 in several ways. (thanks to Alexey Dejneka)
6090 * improved argument type checking for various basic arithmetic
6091 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6092 lavished on them in the past that they can be compiled in many
6093 ways in different special cases
6094 * fixed bug 181: compiler checks validity of user supplied type
6096 * cleaned up code flushing in optimization: Function calls which
6097 should signal errors for safety purposes (e.g. which ANSI says
6098 should signal errors when their arguments are of incorrect type)
6099 are no longer optimized away.
6100 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6101 * incremented fasl file version number, because changes in the
6102 implementation of sequence functions like COERCE caused
6103 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6104 in old inline expansions) to become undefined. (Actually these
6105 changes were later undone, so we might very well be binary
6106 compatible with 0.7.7 after all, but leaving the version number
6107 incremented seemed like the simplest and most conservative
6110 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6111 * An alpha-quality port to the parisc architecture running Linux,
6112 based on the old CMUCL backend, has been made. This, even more so
6113 than the other backends, should be considered still a work in
6114 progress; known problems include that the Linux kernel in 64-bit
6115 mode does not propagate the correct sigcontext structure to
6116 userspace, and consequently SBCL on a parisc64 kernel will not
6118 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6119 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6120 suppressed.) Also now that the compiler is looking at declarations
6121 in the environment, it checks optimization declarations as well,
6122 and suppresses inlining when (> DEBUG SPEED).
6123 * More fixes have been made to treatment of floating point exception
6124 treatment and other Unix signals. In particular, floating point
6125 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6126 * The detection and handling of control stack exhaustion (infinite
6127 or very deeply nested recursion) has changed. Stack exhaustion
6128 detection is now done by write-protecting pages at the OS level
6129 and applies at all optimization settings; when found, a
6130 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6131 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6132 be caught using IGNORE-ERRORS.
6133 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6134 correctly when transforming recursive LABELS functions to LETs.
6135 (thanks to Alexey Dejneka)
6136 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6137 that are names of constants or global variables.
6138 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6139 alien routines with docstrings.
6140 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6141 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6143 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6144 (thanks to Eric Marsden)
6145 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6146 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6147 * Bug fix: The SPARC backend can now compile functions involving
6148 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6149 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6150 to a functions expecting a PATHNAME-DESIGNATOR.
6151 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6152 lambda lists. (thanks to Alexey Dejneka)
6153 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6154 functions so that EXPORTing the name of the class doesn't cause
6155 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6156 to Antonio Martinez for reporting this)
6157 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6158 constant-folded without failing an assertion. (thanks to Einar
6159 Floystad Dorum for reporting this)
6160 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6161 types are now dealt with more correctly by the compiler.
6162 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6163 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6164 behaviour analogous to RENAME-FILE. This puts its behaviour more
6165 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6167 * The fasl file version number has changed again. (because of the
6168 bug fix involving the names of PCL MAKE-INSTANCE functions)
6170 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6171 * bug fix: Floating point exceptions are treated much more
6172 consistently on the x86/Linux and PPC/Linux platforms.
6173 * Array initialization with :INITIAL-ELEMENT is now much faster for
6174 cases when the compiler cannot open code the array creation, but
6175 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6176 array accesses have also seen a speed increase.
6177 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6178 specified. (This was at the root of some bad interactions between
6179 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6181 * bug fix: Internal error arguments for undefined functions are now
6182 computed correctly on the PPC/Linux platform.
6183 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6184 Raymond Toy's patch for CMU CL)
6185 * Support for the Solaris 9 operating environment has been included
6186 (thanks to Daniel Merritt)
6187 * A very ugly but hopefully complete draft of the missing FFI chapter
6188 of the manual has been created by reformatting the corresponding
6189 CMU CL manual chapter into (currently very ugly and incoherent)
6190 DocBook and bringing it up to date for SBCL behavior. Thus, the
6191 manual is now essentially complete, at least by my extreme
6192 once-and-only-once standards, whereby it's acceptable to refer to
6193 the doc strings of SB-EXT functions as the primary documentation.
6194 * The fasl file version number has changed again, due to cleanup of
6195 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6196 is no longer a static symbol.)
6198 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6199 * SBCL now builds with OpenMCL (version 0.12) as the
6200 cross-compilation host; also, more progress has been made toward
6201 bootstrapping under CLISP.
6202 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6204 * bug 158 fixed: The compiler can now deal with integer loop
6205 increments different from 1; fixing this turned out also to fix
6207 * bug 169 fixed: no more bogus warnings about using lexical bindings
6208 despite the presence of perfectly good SPECIAL declarations (thanks
6209 to David Lichteblau)
6210 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6211 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6212 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6214 * bug 180 fixed: Method combination specifications no longer ignore
6215 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6216 * bug fix: Structure type predicate functions now check their argument
6217 count as they should.
6218 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6219 correctly. (thanks to Pierre Mai)
6220 * minor incompatible change: The --noprogrammer option is deprecated
6221 in favor of the new --disable-debugger option, which is very similar.
6222 (The major difference is that it takes effect at a slightly different
6223 time at startup, causing handling of errors in --sysinit and
6224 --userinit files will be affected differently.) The
6225 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6226 been added to allow this functionality to be controlled from ordinary
6227 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6228 maintainers, who might want to run non-interactive scripts to
6229 build SBCL cores which will later be used interactively.)
6230 * minor incompatible change: The LOAD function no longer, when given
6231 a wild pathname to load, loads all files matching that pathname.
6232 Instead, an error of type FILE-ERROR is signalled.
6234 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6235 * bug 147 fixed: The compiler preserves its block link/count
6236 invariants more correctly now so that it doesn't crash. (thanks
6238 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6240 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6241 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6242 no-value-for-this-character as NIL (as specified by ANSI).
6243 * HOST-NAMESTRING on physical pathnames now returns a string that is
6244 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6245 (thanks to Christophe Rhodes)
6246 * The Alpha port handles icache flushing more correctly. (thanks to
6248 * More progress has been made toward bootstrapping under CLISP. (thanks
6249 to Christophe Rhodes)
6250 * The fasl file format has changed again, because dynamic loading
6251 on OpenBSD (which has non-ELF object files) motivated some cleanups
6252 in the way that foreign symbols are transformed and passed around.
6253 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6254 is no longer treated as whitespace by the reader, but instead as
6255 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6256 |A
\x7fB|, instead of A as it used to.
6258 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6259 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6260 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6261 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6262 this as of 0.7.1.45, but was left out of the previous news section
6263 (thanks to Dan Barlow)
6264 * SBCL now runs on the Solaris operating system on SPARC architectures
6265 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6266 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6267 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6268 * SPARC backend cleanups, allowing builds of cores optimized for V8
6269 and V9 SPARCS, and also emission of code targeted to a particular
6270 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6272 * SBCL is closer to bootstrapping under CLISP, thanks to various
6273 fixes by Christophe Rhodes.
6274 * The fasl file format has changed again, to allow the compiler's
6275 INFO database to support symbol macros.
6276 * The user manual (in doc/) is formatted into HTML more nicely.
6277 (thanks to coreythomas)
6278 * The system is smarter about SUBTYPEP relationships, especially
6279 those involving NOT types (including types such as ATOM which are
6280 represented internally using NOT types). Thus SUBTYPEP is less
6281 likely to return (VALUES NIL NIL) in general, and in particular
6282 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6284 * The fasl file format has changed again, because the internal
6285 representation of types now includes a new slot to support the new
6286 SUBTYPEP-of-NOT-types logic.
6287 * (not a change in the main branch of SBCL, but a related prototype
6288 which can hopefully be merged into the main branch of SBCL in the
6289 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6290 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6291 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6292 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6293 dispatch macro character combinations. (thanks to Alexey Dejneka)
6294 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6295 that superficially look like logical namestrings correctly.
6296 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6298 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6299 default supplied-p) for &optional and &key arguments. (thanks to
6302 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6303 * incompatible change: The compiler is now less aggressive about
6304 tail call optimization, doing it only when (> SPACE DEBUG) or
6305 (> SPEED DEBUG). (This is an incompatible change because there are
6306 programs which relied on the old CMU-CL-style behavior to optimize
6307 away their unbounded recursion which will now die of stack overflow.)
6308 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6309 for non-GENCGC systems has been increased to 20M (since that
6310 seems much closer to the likely performance optimum for modern
6311 systems than the old 4M value was)
6312 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6313 and *DEBUG-PRINT-LEVEL*
6314 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6315 of CMU CL's support for SPARC, and various endianness and other
6316 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6317 * new syntactic sugar for the Unix command line: --load foo.bar is now
6318 an alternate notation for --eval '(load "foo.bar")'.
6320 ** The system now detects stack overflow and handles it gracefully,
6321 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6322 optimization settings. (This is a good thing in general, and
6323 its introduction in this version should be particularly timely
6324 for anyone whose code fails because of suppression of tail
6326 ** The system now hunts for the C variable "environ" in a more
6327 devious way, to avoid segfaults when the C library version differs
6328 between compile time and run time. (thanks to Christophe Rhodes)
6329 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6330 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6331 ** The compiler no longer issues bogus style warnings for undefined
6332 classes in the same source file as the DEFCLASSes which defined
6333 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6335 ** fixes in CONDITION class precedence list for undefined function
6336 errors (thanks to Alexei Dejneka)
6337 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6338 correctly. (thanks to Dan Barlow)
6339 ** portability fixes aiming at bootstrapping under CLISP (thanks
6340 to Dave McDonald and Christophe Rhodes)
6341 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6342 ** fixes in type translation and and type inference (thanks to
6344 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6345 ** various fixes in the new ports (thanks to Dan Barlow)
6346 * several changes related to debugging:
6347 ** suppression of tail recursion, as noted above
6348 ** stack overflow detection, as noted above
6349 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6350 is now the default. (For some time encapsulation has been more
6351 reliable than the breakpoint-based :ENCAPSULATE NIL
6352 implementation, at least on X86 systems; and I just noticed that
6353 encapsulation also seems closer to the spirit of the ANSI
6356 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6358 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6359 up properly again. (There was a packaging bug in 0.7.0 which
6360 left their definitions in SB-SYS::LOAD-FOREIGN and
6361 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6362 vital for most things which interface to C-level interfaces,
6363 like extensions working with sockets or databases or
6364 Perl-compatible regexes or whatever, and the need to fix
6365 this bug is the main reason that 0.7.1 was released so
6367 ** DEFGENERIC is now choosier about the methods it redefines, so that
6368 reLOADing a previously-LOADed file containing DEFGENERICs does
6369 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6370 cycle now works as it should. (thanks to Alexey Dejneka)
6371 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6372 fixed by Christophe Rhodes. (He actually submitted this patch
6373 months ago, and I delayed until after 0.7.0.)
6374 ** Bug 111 (internal compiler confusion about runtime checks on
6375 FUNCTION types) was fixed by Alexey Dejneka.
6376 * Some internal cleanups (getting rid of variables which aren't
6377 needed now that the byte interpreter is gone) caused the fasl
6378 file format number to change again.
6380 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6381 * major incompatible change: The default fasl file extension, i.e. the
6382 default extension for files produced by COMPILE-FILE, has changed
6383 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6385 ** There are many changes in the implementation of the compiler.
6386 SBCL is now essentially a compiler-only implementation of ANSI
6387 Common Lisp. EVAL still "interprets" a few special cases, but
6388 almost all the interesting cases are handled by creating
6389 a LAMBDA expression, calling COMPILE on it, then calling
6390 FUNCALL on the result.
6391 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6392 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6393 Since the code is newer, there might still be some new bugs
6394 (though not as many as before Martin Atzmueller's fixes:-). But
6395 the new code is substantially simpler and clearer, and hopefully
6396 any remaining bugs will be simpler, less fundamental, and more
6397 fixable then the bugs in the old code.
6398 ** The revised compiler is still a little unsteady on its feet.
6400 *** The debugging information it produces (particularly the names
6401 of FUNCTION objects) is sometimes much less useful than what
6402 the old compiler produced.
6403 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6404 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6405 within a MACROLET) has been temporarily weakened.
6406 ** There are new compiler optimizations for various functions:
6407 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6408 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6409 *** the math functions TRUNCATE, FLOOR, and CEILING
6410 *** the function-of-all-trades COERCE
6411 Mostly these should be transparent, but there's one
6412 potentially-annoying problem (bug 117): when the compiler
6413 inline-expands a function and does type analysis on the result,
6414 it can create control paths which have type mismatches, and
6415 when it can't prove that those control paths aren't taken,
6416 it will issue WARNINGs about the type mismatches. This is
6417 a particular problem in practice for the new sequence functions.
6418 It's not clear how this should be fixed, and for now, a
6419 workaround is given in the entry for 117 in the BUGS file.
6420 ** (Because of the interaction between the two previous items --
6421 occasional inlining problems and new inline expansions -- some
6422 of the new sequence function optimizations won't really kick in
6423 completely until debugging information, and then inlining, are
6424 straightened out in some future version.)
6425 * minor incompatible changes:
6426 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6427 DIRECTORY no longer implicitly promotes NIL slots of its
6428 pathname argument to :WILD. In particular, when you ask for the
6429 contents of a directory (which you used to be able to do without
6430 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6431 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6432 ** changes in behavior that ANSI explicitly defines to be
6433 implementation dependent:
6434 *** The new compiler-only implementation still conforms with ANSI,
6435 but acts a little different than before. Besides the obvious
6436 changes in performance tradeoffs (that the cost per form passed
6437 to EVAL has gone up, and the cost per form executed by EVAL
6438 has gone down), the behavior of the system changes a little
6439 because there are no longer any interpreted function objects.
6440 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6441 e.g. doing COMPILE on the output of interactive DEFUN is
6443 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6445 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6446 has changed from (:CL) to NIL.
6447 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6448 e.g. #\Newline and #\Tab, don't have names specified in the
6449 ANSI Common Lisp standard, is now based on their ASCII symbolic
6450 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6451 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6452 are no longer used for output.
6453 ** changes in internal implementation constants:
6454 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6455 4 million. (If your application spends a lot of time GCing and
6456 you have a lot of RAM, you might want to experiment with
6457 increasing it even more.)
6458 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6459 However, almost all old code should still continue to work without
6460 immediate update, as SB-C-CALL is now a (deprecated) nickname
6462 ** Old operator names in the style DEF-FOO are now deprecated in
6463 favor of new corresponding names DEFINE-FOO, for consistency with
6464 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6465 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6466 internal symbols, but a few supported extensions like
6467 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6468 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6469 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6470 etc. as you get deeper into recursive calls to the debugger
6471 command loop, instead of the old "5]", "5]]", "5]]]"
6472 sequence. (I was motivated to do this when squabbles between
6473 ILISP and SBCL left me very deeply nested in the debugger. In the
6474 short term, this change will probably provoke more ILISP/SBCL
6475 squabbles, but hopefully it will be an improvement in the long run.)
6476 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6477 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6478 function, since declaiming return types involving aliens is
6479 (1) annoyingly messy to do by hand and (2) vital to efficient
6480 compilation of code which calls such functions.
6481 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6482 longer reexported by the SB-EXT package. They're solely useful
6483 for alien code, so it seems more logical that you should get
6484 them from the SB-ALIEN package, not in SB-EXT.
6485 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6486 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6487 features. Instead, the code that they used to control is always
6488 built into the system.
6489 * many other bug fixes
6490 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6491 advantage of the new EVAL-WHEN stuff and to clean them up in
6492 general, and they are now more ANSI-compliant in a number of
6493 ways. Martin Atzmueller is responsible for a lot of this.
6494 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6496 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6497 *** correct ERROR type for various file operations
6498 *** some fixes for Lisp streams
6499 *** DEFMETHOD syntax checking
6500 *** changing old weird representation of debug information as
6501 strings (which, among their other deficiencies, don't transform
6502 correctly when you rename packages, and don't change their
6503 print representation when you change things like *PACKAGE*
6504 and *PRINT-LENGTH*) to symbols and lists of symbols
6505 He also made several improvements and fixed several bugs in DESCRIBE.
6506 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6508 *** misbehavior of WRITE-STRING/WRITE-LINE
6509 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6510 and several other LOOP problems as well
6511 *** DIRECTORY when similar filenames are present
6512 *** DEFGENERIC with :METHOD options
6513 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6514 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6515 *** argument ordering in FIND with :TEST option
6516 *** mishandled package designator argument in APROPOS-LIST
6517 *** various problems in the backquote readmacro
6518 *** a bug in APROPOS
6519 *** probably some others that I'm not describing very well here,
6520 since the CVS log documents them by reference to sbcl-devel
6521 messages, and the SourceForge archives aren't working well.:-(
6522 ** Dan Barlow improved the Alpha port (and is making progress on the
6523 PPC port, for those of you who think different).
6524 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6525 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6526 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6527 continues to work on the SPARC port (for those of you in a position
6528 to look down upon our little PC-compatible boxes from a great height).
6529 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6530 and uses that copy, rather than the current dynamic value, when
6531 it's trying to decide whether to truncate output. Thus e.g.
6532 (let ((*print-lines* 50))
6533 (pprint-logical-block (stream nil)
6535 (let ((*print-lines* 8))
6536 (print (aref possiblybigthings i) stream)))))
6537 should now truncate the logical block only at 50 lines, instead of
6538 often truncating it at 8 lines, as it did before.
6539 * The doc/cmucl/ directory, containing old CMU CL documentation
6540 from the time of the fork, is no longer part of the base system.
6541 SourceForge has shut down its anonymous FTP service, and with it
6542 my original plan for distributing the old CMU CL documentation
6543 there. For now, if you need these files you can download an old
6544 SBCL source release and extract them from it.
6545 * The fasl file version number changed again, for dozens of reasons,
6546 some of which are apparent above.
6548 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6549 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6550 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6551 patch, so that DISASSEMBLE output is much nicer.
6552 * The code in the SB-PROFILE package now seems reasonably stable.
6553 I still haven't decided what the final interface should look like
6554 (I'd like PROFILE to interact cleanly with TRACE, since both
6555 facilities use function encapsulation) but if you have a need
6556 for profiling now, you can probably use it successfully with
6557 the current CMU-CL-style interface.
6558 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6559 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6560 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6561 link now returns the dangling link itself, and for similar
6562 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6563 link itself. (In these cases the old code signalled an error and
6564 looped endlessly, respectively.) Thus, DIRECTORY now works even
6565 in the presence of dangling and cyclic symbolic links.
6566 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6567 is now a supported extension again, since the consensus on
6568 sbcl-devel was that it can be useful for ordinary development
6569 work, not just for debugging SBCL itself.
6570 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6571 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6572 that currently-defined functions might be redefined later with
6573 different return types.
6574 * Hash tables can be printed readably, as inspired by CMU CL code
6575 of Eric Marsden and SBCL code of Martin Atzmueller.
6576 * better error handling in CLOS method combination, thanks to
6577 Martin Atzmueller porting Pierre Mai's CMU CL patches
6578 * more overflow fixes for >16Mbyte I/O buffers
6579 * A bug in READ has been fixed, so that now a single Ctrl-D
6580 character suffices to cause end-of-file on character streams.
6581 In particular, now you only need one Ctrl-D at the command
6582 line (not two) to exit SBCL.
6583 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6585 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6586 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6587 does the right thing.
6588 * The implementation of some type tests, especially for CONDITION
6589 types, is now tidier and maybe faster, due to CMU CL code
6590 originally by Douglas Crosher, ported by Martin Atzmueller.
6591 * Some math functions have been fixed, and there are new
6592 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6593 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6594 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6595 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6596 likely to be built into sbcl-0.7.0.)
6597 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6598 CL, ported to SBCL by Martin Atzmueller)
6599 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6600 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6601 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6602 * There's a new slam.sh hack to shorten the edit/compile/debug
6603 cycle for low-level changes to SBCL itself, and a new
6604 :SB-AFTER-XC-CORE target feature to control the generation of
6605 the after-xc.core file needed by slam.sh.
6606 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6607 COMPILE-FILE is no longer supported, so that now every function
6608 gets an entry point, so that block compilation looks a little
6609 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6610 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6611 returns the number of bytes consed since the system started,
6612 rather than the number consed since the first time the function
6613 was called. (The new definition parallels ANSI functions like
6614 CL:GET-INTERNAL-RUN-TIME.)
6615 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6616 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6617 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6618 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6619 * Fasl file version numbers are now independent of the target CPU,
6620 since historically most system changes which required version
6621 number changes have affected all CPUs equally. Similarly,
6622 the byte fasl file version is now equal to the ordinary
6625 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6626 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6627 is no longer recognized. I apologize for this, because it was
6628 listed in SB-EXT as a supported extension, but I found that
6629 its existing behavior was poorly specified, as well as incorrectly
6630 specified, and it looked like too much of a mess to straighten it
6631 out. I have enough on my hands trying to get ANSI stuff to work..
6632 * many patches ported from CMU CL by Martin Atzmueller, with
6633 half a dozen bug fixes in pretty-printing and the debugger, and
6634 half a dozen others elsewhere
6635 * fixed bug 13: Floating point infinities are now supported again.
6636 They might still be a little bit flaky, but thanks to bug reports
6637 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6638 as flaky as they were.
6639 * The --noprogrammer command line option is now supported. (Its
6640 behavior is slightly different in detail from what the old man
6641 page claimed it would do, but it's still appropriate under the
6642 same circumstances that the man page talks about.)
6643 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6644 are now supported, and enabled by default. Thus, the compiler can
6645 handle many floating point and complex operations much less
6646 inefficiently. (Thus e.g. you can implement a complex FFT
6648 * The compiler now detects type mismatches between DECLAIM FTYPE
6649 and DEFUN better, and implements CHECK-TYPE more correctly, and
6650 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6651 thanks to patches from Martin Atzmueller.
6652 * various fixes to make the cross-compiler more portable to
6653 ANSI-conforming-but-different cross-compilation hosts (notably
6654 Lispworks for Windows, following bug reports from Arthur Lemmens)
6655 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6656 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6657 fixed thanks to Pierre Mai's CMU CL patches.
6658 * fixes to keep the system from overflowing internal counters when
6659 it tries to use i/o buffers larger than 16M bytes
6660 * fixed bug 45a: Various internal functions required to support
6661 complex special functions have been merged from CMU CL sources.
6662 (When I was first setting up SBCL, I misunderstood a compile-time
6663 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6664 * improved support for type intersection and union, fixing bug 12
6665 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6666 more obscure bugs as well
6667 * some steps toward byte-compiling non-performance-critical
6668 parts of the system, courtesy of patches from Martin Atzmueller
6669 * Christophe Rhodes has made some debian packages of sbcl at
6670 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6671 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6672 stable, but are nonetheless usable. When he's ready, I'd be happy
6673 to add them to the SourceForge "File Releases" section. (And if
6674 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6675 * new fasl file format version number (because of changes in
6676 internal representation of (OR ..) types to accommodate the new
6677 support for (AND ..) types, among other things)
6679 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6680 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6682 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6684 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6685 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6686 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6687 * DESCRIBE now works on structure objects again.
6688 * Most function call argument type mismatches are now handled as
6689 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6690 know whether the function will be redefined before the call is
6691 executed. (The compiler could flag local calls with full WARNINGs,
6692 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6693 it doesn't keep track of enough information to know whether calls
6694 are local in this sense.)
6695 * Compiler output is now more verbose, with messages truncated
6696 later than before. (There should be some supported way for users
6697 to override the default verbosity, but I haven't decided how to
6698 provide it yet, so this behavior is still controlled by the internal
6699 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6700 src/compiler/ir1util.lisp.)
6701 * Fasl file format version numbers have increased again, because
6702 support for the Gray streams extension changes the layout of the
6703 system's STREAM objects.
6704 * The Gray subclassable streams extension now works, thanks to a
6705 patch from Martin Atzmueller.
6706 * The full LOAD-FOREIGN extension (not just the primitive
6707 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6708 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6709 but like most other programs, it defaults to copying the Unix
6710 environment from the original process instead of starting the
6711 new process in an empty environment.
6712 * Extensions which manipulate the Unix environment now support
6713 an :ENVIRONMENT keyword option which doesn't smash case or
6714 do other bad things. The CMU-CL-style :ENV option is retained
6715 for porting convenience.
6716 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6717 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6719 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6721 * A patch from Martin Atzmueller seems to have solved the SIGINT
6722 problem, and as far as we know, signal-handling now works cleanly.
6723 (If you find any new bugs, please report them!)
6724 * The system no longer defaults Lisp source file names to types
6725 ".l", ".cl", or ".lsp", but only to ".lisp".
6726 * The compiler no longer uses special default file extensions for
6727 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6728 seems to expect a single default extension for all compiled code,
6729 and there's no compelling reason to try to stretch the standard
6730 to allow two different extensions.) Instead, byte-compiled files
6731 default to the same extension as native-compiled files.
6732 * Fasl file format version numbers have increased again, because
6733 a rearrangement of internal implementation packages made some
6734 dumped symbols in old fasl files unreadable in new cores.
6735 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6736 many fewer weird special cases.
6737 * Bug #17 (differing COMPILE-FILE behavior between logical and
6738 physical pathnames) has been fixed, and some related misbehavior too,
6739 thanks to a patch from Martin Atzmueller.
6740 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6741 by Tim Moore, ported to SBCL by Martin Atzmueller.
6742 * Martin Atzmueller fixed several filesystem-related problems,
6743 including bug #36, in part by porting CMU CL patches, which were
6744 written in part by Paul Werkowski.
6745 * More compiler warnings in src/runtime/ are gone, thanks to
6746 more patches from Martin Atzmueller.
6747 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6750 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6752 * DESCRIBE now works on CONDITION objects.
6753 * The debugger now handles errors which arise when trying to print
6754 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6756 * The build system now uses an additional file, customize-target-features.lisp,
6757 to allow local modifications to the target *FEATURES* list. (The point of
6758 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6759 debugging features enabled, without having to worry about propagating it
6760 into everyone's system when I do a "cvs update".) When no
6761 customize-target-features.lisp file exists, the target *FEATURES* list
6762 should be constructed the same way as before.
6763 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6764 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6765 warn about behavior which is undefined under the ANSI spec. Note: This
6766 is specified by ANSI, but it's not very popular with programmers.
6767 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6768 macro in the SBCL sources for an example of a workaround which you
6769 might use to make portable ANSI-standard code which does what you want.
6770 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6771 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6772 when it's used as a non-toplevel form. (This is required in order
6773 to implement the DEFCONSTANT-EQX macro.)
6774 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6775 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6776 funny things, due to bugs in the implementation of EVAL-WHEN
6777 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6778 non-toplevel DEFCONSTANTs are uncommon.)
6779 * The core file version number and fasl file version number have been
6780 incremented, because the old noncompliant DEFCONSTANT behavior involved
6781 calling functions which no longer exist, and because I also took the
6782 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6783 * fixed bug 1 (error handling before read-eval-print loop starts), and
6784 redid debugger restarts and related debugger commands somewhat while
6786 ** The QUIT debugger command is gone, since it did something
6787 rather different than the SB-EXT:QUIT command, and since it never
6788 worked properly outside the main toplevel read/eval/print loop.
6789 Invoking the new TOPLEVEL restart provides the same functionality.
6790 ** The GO debugger command is also gone, since you can just invoke
6791 the CONTINUE restart directly instead.
6792 ** The TOP debugger command is also gone, since it's redundant with the
6793 FRAME 0 command, and since it interfered with abbreviations for the
6795 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6797 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6798 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6799 some porting work by Martin Atzmueller)
6800 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6801 with a boatload of patches which he ported to SBCL. Now that those
6803 ** The system tries to make sure that its low-priority messages
6804 are prefixed by semicolons, to help people who like to use
6805 syntax highlighting in their ILISP buffer. (This patch
6806 was originally due to Raymond Toy.)
6807 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6808 patches originally written by Raymond Toy.
6809 ** The compiler understands coercion between single-value and
6810 multiple-VALUES type expressions better, getting rid of some very
6811 weird behavior, thanks to patches originally by Robert MacLachlan
6812 and Douglas Crosher.
6813 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6814 lambda lists, thanks to a patch originally by Pierre Mai.
6815 ** The system no longer bogusly warns about "abbreviated type
6817 ** The compiler gets less confused by inlining and RETURN-FROM,
6818 thanks to some patches originally by Tim Moore.
6819 ** The system no longer hangs when dumping circular lists to fasl
6820 files, thanks to a patch originally from Douglas Crosher.
6821 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6822 undefined function error.
6823 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6824 in structure slot initforms) for now, documented workaround instead:-|
6825 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6826 * fixed bug 5: added stubs for various Gray stream functions called
6827 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6828 installed, at least appropriate type errors are generated
6829 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6830 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6831 consistently in DEFMETHOD forms.
6832 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6833 it doesn't seem to affect SBCL after all
6834 * The C runtime system now builds with better optimization and many
6835 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6837 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6839 * The system is now under CVS at SourceForge (instead of the
6840 CVS repository on my home machine).
6841 * The new signal handling code has been tweaked to treat register
6842 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6843 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6844 downstream, e.g. in debug-int.lisp, has implicit dependencies
6845 on the unsignedness of integer representation of machine words,
6846 and that caused the system to bomb out with infinite regress
6847 when trying to recover from type errors involving signed values,
6848 e.g. (BUTLAST '(1 2 3) -1).)
6849 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6850 (This was one of the bugs Peter Van Eynde reported back in July.)
6851 * The system now uses code inspired by Colin Walters' O(N)
6852 implementation of MAP (from the cmucl-imp@cons.org mailing
6853 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6854 inline the MAP operation, and there is more than one
6855 sequence argument to the MAP call (so that it can't just
6856 do ETYPECASE once and for all based on the type of the
6857 single sequence argument). (The old non-inline implementation
6858 of the general M-argument sequence-of-length-N case required
6859 O(M*N*N) time when any of the sequence arguments were LISTs.)
6860 * The QUIT :UNIX-CODE keyword argument has been renamed to
6861 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6862 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6864 * Raymond Wiker's patches to port dynamic loading from Linux to
6865 FreeBSD have been added.
6866 * The BUGS file is now more nearly up to date, thanks in large part
6867 to Martin Atzmueller's review of it.
6868 * The debugger now flushes standard output streams before it begins
6869 its output ("debugger invoked" and so forth).
6870 * The core version number and fasl file version number have both
6871 been incremented, because of incompatible changes in the layout
6873 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6874 used to not be called for a saved Lisp image.)
6875 * Martin Atzmueller's version of a patch to fix a compiler crash,
6876 as posted on sbcl-devel 13 September 2000, has been installed.
6877 * Instead of installing Martin Atzmueller's patch for the
6878 compiler transform for SUBSEQ, I deleted the compiler transform,
6879 and transforms for some similar consing operations.
6880 * A bug in signal handling which kept TRACE from working on OpenBSD
6882 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6883 away by constant folding
6884 * The system now defines its address space constants in one place
6885 (in the Lisp sources), and propagates them automatically elsewhere
6886 (through GENESIS and the sbcl.h file). Therefore, patching the
6887 address map is less unnecessarily tedious and error-prone. The
6888 Lisp names of address space constants have also been systematized.
6889 * CVS tags like dollar-Header-dollar have been removed from
6890 the sources, because they have never saved me trouble and
6891 they've been source of trouble working with patches and other
6892 diff-related operations.
6893 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6894 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6896 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6898 * The system has been ported to OpenBSD.
6899 * The system now compiles with a simple "sh make.sh" on the systems
6900 that it's supported on. I.e., now you no longer need to tweak
6901 text in the target-features.lisp-expr and symlinks in src/runtime/
6902 by hand, the make.sh takes care of it for you.
6903 * The system is no longer so grossly inefficient when compiling code
6904 involving vectors implemented as general (not simple) vectors (VECTOR T),
6905 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6906 which dares to use the various sequence functions on non-simple
6907 vectors, takes less of a performance hit.
6908 * There is now a primitive type predicate VECTOR-T-P
6909 to test for the (VECTOR T) type, so that e.g.
6910 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6911 can now be compiled with some semblance of efficiency. (The old code
6912 turned the type declaration into a full call to %TYPEP at runtime!)
6913 * AREF on (VECTOR T) is still not fast, since it's still compiled
6914 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6915 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6916 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6917 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6918 without making full calls to SUBTYPEP at runtime.
6919 (Some analogous efficiency issues for non-simple vectors specialized to
6920 element types other than T, or for non-simple multidimensional arrays,
6921 have not been addressed. They could almost certainly be handled the
6922 same way if anyone is motivated to do so.)
6923 * The changes in array handling break binary compatibility, so
6924 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6925 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6926 instead of (VALUES T T).
6927 * By following the instructions that Dan Barlow posted to sbcl-devel
6928 on 2 July 2000, I was able to enable primitive dynamic object
6929 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6930 functionality is not implemented (since it calls ld to resolve
6931 library references automatically, requiring RUN-PROGRAM for its
6932 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6933 try to resolve library references) is now supported.
6934 * The system now flushes the standard output streams when it terminates,
6935 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6936 them at several other probably-convenient times, e.g. in each pass of
6937 the toplevel read-eval-print loop, and after evaluating a form given
6938 as an "--eval" command-line option. (These changes were motivated by a
6939 discussion of stream flushing issues on cmucl-imp in August 2000.)
6940 * The source transform for TYPEP of array types no longer assumes
6941 that an array whose element type is a not-yet-defined type
6942 is implemented as an array of T, but instead punts, so that the
6943 type will be interpreted at runtime.
6944 * There is now some support for cross-compiling in make.sh: each of
6945 the phases of make.sh has its own script. (This should be transparent
6946 to people doing ordinary, non-cross-compile builds.)
6947 * Since my laptop doesn't have hundreds of megabytes of memory like
6948 my desktop machine, I became more motivated to do some items on
6949 my to-do list in order to reduce the size of the system a little:
6950 ** Arrange for various needed-only-at-cold-init things to be
6951 uninterned after cold init. To support this, those things have
6952 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6953 symbols with such names are now uninterned after cold init).
6954 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6955 fasl files for cold load.
6956 ** Remove the old compiler structure pooling code (which used to
6957 be conditional on the target feature :SB-ALLOC) completely.
6958 ** Redo the representation of some data in cold init to be more compact.
6959 (I also looked into supporting byte compiled code at bootstrap time,
6960 which would probably reduce the size of the system a lot, but that
6961 looked too complicated, so I punted for now.)
6962 * The maximum signal nesting depth in the src/runtime/ support code has
6963 been reduced from 4096 to 256. (I don't know any reason for the very
6964 large old value. If the new smaller value turns out to break something,
6965 I'll probably just bump it back up.)
6966 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6968 * Many, many bugs reported by Peter Van Eynde have been added to
6969 the BUGS list; some have even been fixed.
6970 * While enabling dynamic object file loading, I tried to make the
6971 code easier to understand, renaming various functions and variables
6972 with less ambiguous names, and changing some function calling
6973 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6974 * While trying to figure out how to do the OpenBSD port, I tried to
6975 clean up some of the code in src/runtime/. In particular, I dropped
6976 support for non-POSIX signal handling, added various comments,
6977 tweaked the code to reduce the number of compilation warnings, and
6978 renamed some files to increase consistency.
6979 * To support the new automatic configuration functionality in make.sh,
6980 the source file target-features.lisp-expr has been replaced with the
6981 source file base-target-features.lisp-expr and the machine-generated
6982 file local-target-features.lisp-expr.
6983 * fixed a stupid quoting error in make.sh so that using CMU CL
6984 "lisp -batch" as cross-compilation host works again
6986 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6988 * DESCRIBE no longer tries to call itself recursively to describe
6989 bound/fbound values, so that it no longer fails on symbols which are
6990 bound to themselves (like keywords, T, and NIL).
6991 * DESCRIBE now works on generic functions.
6992 * The printer now prints less-screwed-up representations of closures
6993 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6994 * A private symbol is used instead of the :EMPTY keyword previously
6995 used to mark empty slots in hash tables. Thus
6996 (DEFVAR *HT* (MAKE-HASH-TABLE))
6997 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6998 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6999 now does what ANSI says that it should. (You can still get
7000 similar noncompliant behavior if bang on the hash table
7001 implementation with all the symbols you get back from
7002 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7003 This breaks binary compatibility, since tests for equality to
7004 :EMPTY are wired into things like the macroexpansion of
7005 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7007 * There's now a minimal placeholder implementation for CL:STEP,
7008 as required by ANSI.
7009 * An obscure bug in the interaction of the normal compiler, the byte
7010 compiler, inlining, and structure predicates has been patched
7011 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7012 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7014 * Missing ordinary arguments in a macro call are now detected even
7015 when the macro lambda list contains &KEY or &REST.
7016 * The debugger no longer complains about encountering the top of the
7017 stack when you type "FRAME 0" to explicitly instruct it to go to
7018 the top of the stack. And it now prints the frame you request even
7019 if it's the current frame (instead of saying "You are here.").
7020 * As specified by ANSI, the system now always prints keywords
7021 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7023 * The default initial SIZE of HASH-TABLEs is now smaller.
7024 * Type information from CLOS class dispatch is now propagated
7025 into DEFMETHOD bodies, so that e.g.
7026 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7028 is now basically equivalent to
7029 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7030 (DECLARE (TYPE SINGLE-FLOAT X))
7032 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7033 operation, without having to do run-time type dispatch.
7034 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7035 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7036 * Since I don't seem to be making big file reorganizations very often
7037 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7038 is overflowing my ability to conveniently back them up), I've finally
7039 checked the system into CVS. (The CVS repository is on my home system,
7040 not at SourceForge -- putting it on SourceForge might come later.)
7041 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7042 high-level GC-NOTIFY-FOO functions send their output. (There's
7043 still very little control of where low-level verbose GC functions
7044 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7045 less than it used to -- the GC-NOTIFY-FOO functions are now under
7046 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7047 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7048 in only one place in the source code, and propagates it automatically
7049 everywhere that it's needed. Thus e.g. when I bump the version from
7050 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7051 * The C source files now include boilerplate legalese and documentation
7052 at the head of each file (just as the Lisp source files already did).
7053 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7054 to his page will be replaced with a link to his new CLiki service.
7056 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7058 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7059 * The build process now looks for GNU make under the default name "gmake",
7060 instead of "make" as it used to. If GNU make is not available as "gmake"
7061 on your system, you can change this default behavior by setting the
7062 GNUMAKE environment variable.
7063 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7064 can build without error under CMU CL.
7066 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7068 * There is now a partial SBCL user manual (with some new text and some
7069 text cribbed from the CMU CL manual).
7070 * The beginnings of a profiler have been added (starting with the
7071 CMU CL profiler and simplifying and cleaning up). Eventually the
7072 main interface should be through the TRACE macro, but for now,
7073 it's still accessed through vaguely CMU-CL-style functions and macros
7074 exported from the package SB-PROFILE.
7075 * Some problems left over from porting CMU CL to the new
7076 cross-compilation bootstrap process have been cleaned up:
7077 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7078 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7079 part when getting rid of the compiler *BACKEND* stuff.)
7080 ** The value of *NULL-TYPE* was screwed up, because it was
7081 being initialized before the type system knew the final
7082 definition of the 'NULL type. This screwed up several key
7083 optimizations in the compiler, causing inefficiency in all sorts
7084 of places. (I found it because I wanted to understand why
7085 GET-INTERNAL-RUN-TIME was consing.)
7086 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7087 PROCLAIM FTYPE information. Unfortunately this broke binary
7088 compatibility again, since now the forms output by DEFGENERIC
7089 to refer to functions which didn't exist in 0.6.3.
7090 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7091 can use the new (as of 0.6.3) transform for SOME into MAP into
7093 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7094 values to (INTEGER 0 1000000), so that the time code will no longer
7095 occasionally get blown up by Linux returning 1000000 microseconds
7096 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7097 its output conform to the ANSI spec. (Alas, this makes its output
7098 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7099 * A full call to MAP NIL with a single sequence argument no longer conses.
7100 * fixes to problems pointed out by Martin Atzmueller:
7101 * The manual page no longer talks about multiprocessing as though
7102 it were currently supported.
7103 * The ILISP support patches have been removed from the distribution,
7104 because as of version 5.10.1, ILISP now supports SBCL without us
7105 having to maintain patches.
7106 * added a modified version of Raymond Toy's recent CMU CL patch for
7107 EQUALP comparison of HASH-TABLE
7109 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7111 * The system still can't cross-compile itself with
7112 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7113 entails), but at least it can compile more of itself that way
7114 than it used to be able to, and various buglets which were uncovered
7115 by trying to cross-compile itself that way have now been fixed.
7116 * This release breaks binary compatibility again. This time
7117 at least I've incremented the FASL file format version to 2, so that the
7118 problem can be detected reliably instead of just causing weird errors.
7119 * various new style warnings:
7120 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7121 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7122 ** using the lexical binding of a variable named in the *FOO* style
7123 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7124 as specified by ANSI.
7125 * *RANDOM-STATE* is no longer automatically initialized from
7126 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7127 default behavior of the system is to repeat its behavior every time
7128 it's run. If you'd like to change this behavior, you can always
7129 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7130 old convention there was no comparably easy way to get the system to
7131 repeat its behavior every time it was run.
7132 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7133 FTYPE declarations has been removed, in favor of their ANSI
7134 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7135 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7136 the types of their sequence arguments can be determined at compile time.
7137 This is done through a new open code expansion for MAP which eliminates
7138 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7139 argument types can be determined at compile time.
7140 * The optimizer now transforms COERCE into an identity operation when it
7141 can prove that the coerced object is already of the correct type. (This
7142 can be a win for machine generated code, including the output of other
7143 optimization transforms, such as the MAP transform above.)
7144 * Credit information has been moved from source file headers into CREDITS.
7145 * Source file headers have been made more standard.
7146 * The CASE macro now compiles without complaining even when it has
7149 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7151 * (Note that the way that the PCL macroexpansions were rewritten
7152 to accommodate the change in DEFGENERIC below breaks binary
7153 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7154 not run under sbcl-0.6.2. Once we get out of alpha releases,
7155 i.e. hit release 1.0.0, we'll probably try to maintain binary
7156 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7157 and sbcl-1.4.4. Until then, however, it might be fairly common
7158 for maintenance releases to break binary compatibility.)
7159 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7161 * The reporting of unhandled signals has been changed to print some
7162 explanatory text as well as the report form. (Previously only
7163 the report form was printed.)
7164 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7165 it defines, so that the compiler no longer issues undefined function
7166 warnings for compiled-but-not-yet-loaded generic functions.
7167 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7168 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7169 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7170 section of the ANSI spec are supported.
7171 * The "" nickname for the "KEYWORD" package has been removed.
7172 The reader still handles symbol tokens which begin with a package marker
7173 as keywords, but it doesn't expose its mechanism for doing so in the
7174 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7175 * The system now issues STYLE-WARNINGs for contradictory TYPE
7176 proclamations. (Warnings for contradictory FTYPE proclamations would
7177 be nice too, but those can't be done usefully unless the type system
7178 is made smarter about FUNCTION types.)
7179 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7180 systematized, so that "*target-*.lisp is supposed to exist only on the
7181 target and imply that there's a related file which exists on the
7182 host, and *host-*.lisp is supposed to exist only on the host and imply
7183 that there's a related file which exists on the target. This involves a
7184 lot of renaming. Hopefully the acute confusion caused by the renaming
7185 will be justified by the reduction in chronic confusion..
7186 ** runtime-type.lisp -> early-target-type.lisp
7187 ** target-type.lisp -> late-target-type.lisp
7188 ** early-host-format.lisp -> early-format.lisp
7189 ** late-host-format.lisp -> late-format.lisp
7190 ** host-error.lisp -> misc-error.lisp
7191 ** early-error.lisp -> early-target-error.lisp
7192 ** late-error.lisp -> late-target-error.lisp
7193 ** host-defboot.lisp -> early-defboot.lisp
7194 ** code/misc.lisp -> code/target-misc.lisp
7195 ** code/host-misc.lisp -> code/misc.lisp
7196 ** code/numbers.lisp -> code/target-numbers.lisp
7197 ** code/early-numbers.lisp -> numbers.lisp
7198 ** early-host-type.lisp -> early-type.lisp
7199 ** late-host-type.lisp -> late-type.lisp
7200 ** host-typep.lisp -> typep.lisp
7201 ** load.lisp -> target-load.lisp
7202 ** host-load.lisp -> load.lisp
7203 ** host-disassem.lisp -> disassem.lisp
7204 ** host-insts.lisp -> insts.lisp
7205 ** byte-comp.lisp -> target-byte-comp.lisp
7206 ** host-byte-comp.lisp -> byte-comp.lisp
7207 ** host-signal.lisp -> signal.lisp
7208 ** host-defstruct.lisp -> defstruct.lisp
7209 ** late-target-type.lisp -> deftypes-for-target.lisp
7210 Furthermore, several other previously target-only files foo.lisp (e.g.
7211 hash-table.lisp and random.lisp) have been split into a target-and-host
7212 foo.lisp file and a target-only target-foo.lisp file, with their key type
7213 definitions in the target-and-host part, so that the cross-compiler will
7214 know more about target types.
7215 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7216 gone away. In their place are various *BACKEND-FOO* variables
7217 corresponding to the slots of the old structure.
7218 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7219 into the target SBCL has been fixed.
7220 * The chill.lisp system for loading cold code into a running SBCL
7222 * Support for the CMU CL "scavenger hook" extension has been removed.
7223 (It was undocumented and unused in the CMU CL sources that SBCL was
7224 derived from, and stale in sbcl-0.6.1.)
7225 * Various errors in the cross-compiler type system were detected
7226 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7227 (enabling various consistency checks). Many of them were fixed,
7228 but some hard problems remain, so the compiler is back to
7229 running without *TYPE-SYSTEM-INITIALIZED* for now.
7230 * As part of the cross-compiler type system cleanup, I implemented
7231 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7232 * I have started adding UNCROSS calls throughout the type system
7233 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7234 on cross-compiler input files will be able to go away, and various
7236 * CONSTANTP now returns true for quoted forms (as explicitly required
7239 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7241 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7242 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7243 (MAKE-LIST -1). In the longer term, it ought to become true
7244 that declarations are assertions even at SAFETY 1. For now, it's not
7245 quite true even at SAFETY 3, but it's at least more nearly true..
7246 (Note that this change seems to increases the size of the system by
7247 O(5%) and to decrease the speed of the compiler by 20% or more.)
7248 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7249 for the problem of printing dozens of lines of distracting information
7250 about low-level system machinery as part of the top stack frame
7251 on entry to the debugger when an undefined function was called.
7252 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7253 is not reset to COMMON-LISP-USER.
7254 * Compilation of stuff related to dyncount.lisp has been made conditional
7255 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7256 smaller. The various dyncount-related symbols have been moved into
7257 a new "SB-DYNCOUNT" package.
7258 * tty-inspect.lisp has been renamed to inspect.lisp.
7259 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7260 feature has gone away. (When we eventually port to other flavors of
7261 libc and/or Unix, we'll try to make the differences between flavors
7262 invisible at the user level.)
7263 * Various other *FEATURES* tags, and/or their associated conditionals,
7264 have been removed if obsolescent, or given better documentation, or
7265 sometimes given more-mnemonic names.
7267 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7269 * tidied up "make.sh" script
7270 * tidied up system directory structure
7271 * better "clean.sh" behavior
7272 * added doc/FOR-CMUCL-DEVELOPERS
7273 * many many small tweaks to output format, e.g. removing possibly-confusing
7274 trailing #\. character in DESCRIBE-INSTANCE
7275 * (EQUALP #\A 'A) no longer signals an error.
7276 * new hashing code, including EQUALP hashing
7277 * tidied up Lisp initialization and toplevel
7278 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7279 * command line argument processing
7280 * added POSIX-GETENV function to deal with Unix-ish environment variables
7281 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7282 terminating SBCL on EOF
7283 * non-verbose GC by default
7284 * There is no more "sbcl" shell script; the sbcl file is now the C
7285 runtime executable (just like CMU CL).
7286 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7288 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7289 symbol and package information as Lisp native symbol and package objects
7290 instead of strings naming symbols and strings naming packages. This way,
7291 whenever packages are renamed (as in warm init), debug information is
7292 transformed along with everything else.
7293 * tweaked the optimization policy declarations which control the building
7294 of SBCL itself. Now, among other things, the system no longer saves
7295 source location debugging information. (This helps two problems at once
7296 by reducing SBCL size and by keeping SBCL from trying to look for its
7297 sources -- which may not exist -- when reporting errors.)
7298 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7299 debugging and testing purposes
7300 * cleaned up printing, making the printer call PRINT-OBJECT for
7301 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7302 methods, giving nearly-ANSI behavior
7303 * converted almost all special variables to use *FOO* naming convention
7304 * deleted PARSE-TIME functionality, since it can be done portably
7305 * moved some files out of cold init into warm init
7306 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7308 * regularized formatting of source files
7309 * added an install.sh script
7310 * fixed ridiculous memory usage of cross-compiler by making
7311 compiler/alloc.lisp not try to do pooling unless it can hook
7312 itself into the GC of the cross-compilation host. Now the system
7313 builds nicely on my old laptop.
7314 * added :SB-ALLOC in target-features.lisp-expr
7315 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7316 was not implemented)
7317 * re-did condition handling and note reporting in the compiler. Notes
7318 are no longer handled by signalling conditions. Style warnings
7319 and warnings are handled more correctly and reported in such a way
7320 that it's easy to find one or the other in your output (so that you
7321 can e.g. figure out which of many problems caused COMPILE-FILE to
7323 * changed the severity of several compiler warnings from full WARNING
7324 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7325 compiler note reporting so that it doesn't use the condition system
7326 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7327 COMPILE-FILE command)
7328 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7329 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7330 no longer supported, since their implementation was deeply intertwingled
7331 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7332 * removed bogus "support" for compiler macros named (SETF FOO), and
7333 removed the compiler macro for SETF INFO (but only after making a fool
7334 of myself on the cmucl-imp mailing list by posting a bogus patch for
7335 DEFINE-COMPILER-MACRO..)
7336 * Compiled files containing forms which have side effects on the Lisp
7337 reader (such as DEFPACKAGE forms) are now handled more correctly.
7338 (Compiler queuing of top level lambdas has been suppressed by setting
7339 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7340 * deleted various currently-unused source files, e.g. gengc.lisp. They
7341 may be added back at some point e.g. when porting to other architectures,
7342 but until they are it's distracting to distribute them and to try to
7344 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7345 there were so many of them they're just distractions, and UNCROSS is
7346 known to be able to handle the current sources
7347 * moved PROFILE functionality into TRACE, so that it will be clear
7348 how the wrapping and unwrapping of functions when you profile them
7349 interacts with the wrapping and unwrapping of functions when you
7350 trace them. (Actually, the functionality isn't there yet, but at least
7351 the interface specification is there. Hopefully, the functionality will
7352 arrive with some future maintenance release.)
7353 * removed host-oops.lisp
7354 * changed signature of QUIT function to allow UNIX-CODE argument
7355 * fixed READ-SEQUENCE bug
7356 * tweaked verbose GC output so that it looks more like the progress
7357 output that ANSI specifies for functions like LOAD
7358 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7359 * added <http://sbcl.sourceforge.com> to the banner information printed by