1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.2.1:
3 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
4 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
7 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
8 * enhancement: GENCGC is enabled on ARM.
9 * enhancement: better error reporting for invalid calls to local functions.
10 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
12 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
14 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
16 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
18 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
19 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
20 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
22 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
23 lp#700538, lp#613876, lp#695286, lp#798388)
24 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
25 * bug fix: array type intersection handles T and unknown element types
26 correctly. (lp#1258716)
27 * bug fix: fix a corner case in array type unparsing that would result in
28 misleading translations from our internal type representation.
29 * bug fix: array-rank now sees through union and intersection types.
31 * bug fix: when DECLARE expressions are in the wrong place, be careful not
32 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
34 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
35 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
36 instead of signaling an error. (lp#1095483)
37 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
38 used to (rarely) introduce duplicate conflict markers in a single
39 TN/block pair. (lp#1327008)
41 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
42 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
43 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
44 report of the signaled conditions lists currently running threads.
45 * enhancement: ported to ARM linux.
46 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
47 * enhancement: new contrib sb-mpfr by Stephan Frank.
48 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
49 (lp#1315846, thanks to Mark Cox)
50 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
51 function-designator to a function only as needed. (lp#1012335)
52 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
53 thanks to Thomas Hlavaty)
54 * bug fix: handle --without-xxx options to make.sh more carefully.
55 (lp#1246665, thanks to Richard M Kreuter)
56 * bug fix: prevent maybe-delete-exit from doing semantically broken things
57 with local exits. (lp#309099, lp#518099, lp#533930)
58 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
61 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
62 * optimization: COERCE is now more effecient for more cases when the type is
63 known at compile-time.
65 * bug fix: correctly inherit condition initforms. (lp#1300904)
66 * bug fix: properly pprint literal functions inside nested lists.
68 * bug fix: more-correctly handle array-type unity (broken for ages, causing
69 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
70 reported by jasom in #lisp).
72 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
73 * enhancement: printing backtraces respects
74 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
76 * optimization: defstruct out-of-line accessor are now as fast as inlined.
78 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
79 instances with a test-function (reported by Vivitron in #sbcl)
80 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
81 * bug fix: Change COND error message (lp#1254511)
82 * bug fix: LOAD is no longer confused when called on a directory.
84 * bug fix: MAKE-CONDITION reports names of missing condition classes
86 * bug fix: restore building with clang. (lp#1293643)
87 * bug fix: restore building on SPARC (broken since 1.1.15).
88 * bug fix: improved FreeBSD support.
89 * bug fix: PPC floating point conversion corrupted stack.
91 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
92 * minor incompatible change: improve read/print consistency for pathnames on
93 Win32, by using the circumflex character #\^ as the escape character.
95 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
96 * enhancement: Loading fasls with symbols from an undefined package includes
97 the name of the symbol in the error message.
98 * bug fix: problems when redefining classes and doing TYPEP on classes
99 concurrently. (lp#1272742)
100 * bug fixes to the x86-64 XCHG instruction:
101 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
103 ** it was misencoded when used to exchange EAX with itself.
104 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
105 32- and 16-bit variations as NOP.
106 * bug fix: the disassembler outputs source annotations in the right place
107 and no longer randomly drops some of them. (lp#1249205)
108 * bug fix: fix commutative-arg-swap from introducing undumpable structures
109 into code, prevent code with errors from being compiled. (lp#1276282)
110 * bug fix: pathnames with :back in their directory component are succeffully
112 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
113 wrap functions around. (lp#309086)
115 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
116 * new feature: the iterative spilling/coloring register allocator developed
117 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
118 in. By default, it only activates for functions that optimize with
119 (speed 3) and (> speed compilation-speed), but setting
120 sb-regalloc:*register-allocation-method* to :iterative forces its
121 execution. The previous behaviour can be obtained by instead setting that
122 variable to :greedy. Thanks again to Google for their support, and, more
123 crucially, to Alexandra Barchunova for her hard work.
124 * optimization: make-array with known element-type and unknown dimensions is
126 * optimization: make-array with unknown element-type is faster as well.
128 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
129 :application-type argument, which can be :console or :gui. :gui allows
130 having GUI applications without an automatically appearing console window.
131 * enhancement: reduced conservativism on GENCGC platforms:
132 conservative roots must be valid-looking tagged pointers or point
133 within a code object, not merely point to within the allocated part
134 of a page, in order to pin a page.
135 * enhancement: support for "Mac Roman" external format.
136 * enhancement: encapsulation of named generic functions now happens without
137 altering the identity of the function bound to the name.
138 * bug fix: Windows applications without the console window no longer misbehave.
139 (patch by Wilfredo Velazquez, lp#1256034).
140 * bug fix: modular arithmetic optimizations do not stumble on dead branches
141 with bad constants. (reported by Douglas Katzman)
142 * bug fix: CLISP can be used again as a cross-compilation host.
143 (Thanks to Vasily Postnicov, lp#1261451)
144 * bug fix: run-program crashed with :directory nil. (lp#1265077)
146 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
147 * optimization: complicated TYPEP tests are less opaque to the type
148 propagation pass. (lp#1229340)
149 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
150 * optimization: EQUALP on structures with raw slots (double-float/complex)
151 no longer conses and is faster.
152 * optimization: RESTART-CASE expands to more compact code.
153 Thanks to Jan Moringen. (lp#1249055)
154 * enhancement: Top-level defmethod without defgeneric no longer causes
155 undefined-function warnings in subsequent forms. (lp#503095)
156 * enhancement: Better error messages for system errors on Windows.
157 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
158 Cushing. (lp#1249183)
159 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
160 specification (multiple integer arguments) and signals a continuable error
161 if the current SBCL version is lower (older) than the specification.
163 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
164 * bug fix: EQUALP now compares correctly structures with raw slots larger
166 * bug fix: contribs couldn't be built on Windows with MinGW.
167 * bug fix: Better pathname handling on Windows. (lp#922117)
168 * bug fix: OPEN reports a more meaningful error when an existing file is
169 opened for output with :if-exists :new-version. Thanks to Philip
170 Munksgaard. (lp#455381)
171 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
172 CLOS-related errors. (lp#633911)
173 * bug fix: GC deadlocks caused by concurrent consing on Windows.
175 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
176 * optimization: better distribution of SXHASH over small conses of related
178 * other improvements to SXHASH:
179 ** use the whole of the positive-fixnum range for SXHASH of fixnums
180 * enhancement: The error message when calling an undefined alien function
181 includes the name of the function on x86-64.
182 * enhancement: sb-ext:run-program now supports :environment on Windows.
183 * enhancement: ASDF is no longer required to load contribs at runtime.
185 * enhancement: when called with a symbol, FIND-RESTART no longer calls
186 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
187 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
188 clusters better in some cases
189 * enhancement: SOME/ANY/other quantification higher-order functions no
190 longer cons. (lp#1070635)
191 * bug fix: forward references to classes in fasls can now be loaded.
193 * bug fix: don't warn on a interpreted->compiled function redefinition
194 from the same location. (patch by Douglas Katzman, lp#1042405)
195 * bug fix: Create vectors of proper internal length when reading literal
196 vectors from FASLs. (Reported by Jan Moringen)
197 * bug fix: COMPILE can now successfully compile setf functions.
198 (Reported by Douglas Katzman)
199 * bug fix: run-program performs more correct escaping of arguments on
200 Windows. (lp#1239242)
201 * bug fix: function-lambda-expression on generic functions returns the
203 * bug fix: (the [type] [constant]) now warns when [constant] matches
204 [type] except for the number of values. (Reported by Nathan Trapuzzano
206 * bug fix: signal errors in required cases of slot-definition initialization
207 protocol. (lp#309072)
208 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
209 (thanks to Stelian Ionescu, lp#1242643)
210 * bug fix: when given a restart object, FIND-RESTART checks whether the
211 restart is active and, when a condition is supplied, whether the restart
212 is associated to a different condition (lp#774410)
214 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
215 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
216 shutdown(3). (thanks to Jan Moringen, lp#1207483)
217 * enhancement: document extensible sequences. (thanks to Jan Moringen,
219 * optimization: EQUAL and EQUALP transforms are smarter.
220 (thanks to Elias Martenson, lp#1220084)
221 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
222 * bug fix: probe-file now can access symlinks to pipes and sockets in
223 /proc/pid/fd on Linux. (reported by Eric Schulte)
224 * bug fix: SBCL can now be built on Solaris x86-64.
225 * bug fix: Floating point exceptions do not persist on Solaris anymore.
226 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
227 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
229 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
230 (thanks to Stephan Frank)
231 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
232 (thanks to Stephan Frank, lp#1206191)
233 * bug fix: sb-safepoint can now reliably handle signal interruptions of
234 foreign code. (lp#1133018)
235 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
236 constructors no longer fails to merge actual and default initargs
237 (thanks to Jan Moringen, lp#1179858)
238 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
239 constructors handles non-KEYWORD initialization arguments more correctly.
240 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
241 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
242 * bug fix: class definitions with CPLs inconsistent with their metaclasses
243 are less likely to destroy the object system's integrity. (lp#309076)
244 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
245 standard. (lp#1203585, thanks to Jan Moringen)
246 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
247 settings. (lp#1023721)
248 * bug fix: getting the order of arguments to
249 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
250 rather than a failed AVER. (reported by Paul Nathan)
251 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
252 arguments during copying on x86 and x86-64; it may still happen on other
253 platforms when there are more fixed arguments than stack slots.
254 (reported by Jan Moringen)
256 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
257 * enhancement: support building the manual under texinfo version 5.
259 * enhancement: Windows builds no longer display the "Kitten of Death" message.
260 A warning is instead appended to the regular banner, and may be muted with
261 --noinform. (lp#728247)
262 * enhancement: support building under new linker handling of syscalls under
263 NetBSD. (thanks to Robert Swindells)
264 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
265 (regression since 1.1.9)
266 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
267 compiler macro. (thanks to Douglas Katzman).
268 * bug fix: signal a warning when defining a setf-function when a
269 setf-expander is already present. (thanks to Douglas Katzman).
270 * bug fix: improved threading on PPC.
271 * bug fix: ROOM works again on Windows. (lp#1206456)
272 * bug fix: Streams were flushed even when there was one byte still left in
273 the buffer. (lp#910213)
274 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
275 either NIL or :ERROR. (reported by Jan Moringen)
277 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
278 * enhancement: ASDF has been updated to 3.0.2.
279 * optimization: stack frames are packed more efficiently on x86oids, which
280 ought to reduce the frequency of Methuselahn conservative references (it
281 certainly helps with gc.impure.lisp / BUG-936304 on x86).
282 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
283 recognized in modular arithmetic contexts, and compile to native negate,
284 rather than going through bignums only to keep the low bits.
285 * bug fix: Compiling potential modularic arithmetic forms does not cause type
286 errors when some integer types lack lower or upper bounds. (lp#1199127)
287 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
288 bitwidth before being used in a non-modular context. (lp#1199428)
289 * bug fix: Multiple catch/unwind blocks in a single function are now
290 allocated in the right stack order on win32. (lp#1072739)
292 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
293 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
294 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
295 * enhancement: disassemble now annotates some previously missing static
296 functions, like LENGTH.
297 * enhancement: clean.sh now also cleans doc/internals.
298 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
299 print a symbol with a package prefix.
300 * enhancement: The debugger and backtracing are more robust against buggy
301 PRINT-OBJECT methods.
302 * optimization: calls to static functions on x86-64 use less instructions.
303 * optimization: compute encode-universal-time at compile time when possible.
304 * optimization: when referencing internal functions as #'x, don't go through
305 an indirect fdefn structure.
306 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
307 * optimization: (mod fixnum) type-checks are performed using one unsigned
308 comparison, instead of two.
309 * optimization: enable more modular arithmetic transforms in the presence of
311 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
312 when the result is known to be negative.
313 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
314 * optimization: comparisons between rationals and constant floats or between
315 integers and constant ratios are now converted to rationals/integers at
317 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
318 * bug fix: problems with NCONC type derivation (reported by Jerry James).
319 * bug fix: EXPT type derivation no longer constructs bogus floating-point
320 types. (reported by Vsevolod Dyomkin)
321 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
322 addrinfo. (lp#1187041, patch by Jerry James)
323 * bug fix: uninitialized type-error conditions can now be printed.
325 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
326 listening, allowing several tests to run in parallel.
327 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
328 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
330 * bug fix: Specialised SIMD-PACK types can be negated.
331 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
332 reported by Eric Marsden)
333 * bug fix: FP return values from foreign calls are always rounded to single
334 or double float precision on x87.
335 * bug fix: Known-safe vector access on x86oids should not fail spuriously
336 when the index is of the form (+ x constant-positive-integer).
337 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
338 * bug fix: backtrace printer no longer tries to create very large lists when
339 the arg-count register is clobberred by other code. (lp#1192929)
340 * bug fix: x86 should never signal an FP exception while boxing an FP value,
341 a situation that lands us into ldb.
343 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
344 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
345 ROOM, plus a few SB-INTROSPECT functions) has been completely
346 rewritten; it may now exhibit different bugs than before.
347 * new feature: minimal runtime/compiler intrastructure support for SSE
348 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
349 feature :sb-simd-pack. This should enable intrinsics extensions as
350 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
351 for maintaining a branch for so long.
352 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
353 the working directory of the spawned process.
354 (lp#791800) (patch by Matthias Benkard)
355 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
356 stack-allocated on PPC.
357 * enhancement: "fixed objects" can now be stack-allocated on PPC.
358 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
359 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
360 also returns VOPs which do not translate any functions, and finds
361 defoptimizer types ir2convert and stack-allocate-result.
362 * enhancement: better type derivation for APPEND, NCONC, LIST.
364 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
365 heap in a manner similar to the GC rather than its previous ad-hoc
366 scheme, and is therefore no less and possibly more accurate.
367 * fixes and enhancements related to Unicode:
368 ** the character database information has been updated to Unicode 6.2;
369 ** support for canonical and compatibility decomposition of characters has
370 been added, along with support for primary composition;
371 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
372 NFKD) has been included;
373 ** querying the character database for code points not defined by Unicode
374 gives less wrong answers (lp#1178038, reported by Ken Harris)
375 * enhancement: print intermediate evaluation results for some ASSERTed
376 expressions. (lp#789497) (patch by Alexandra Barchunova)
377 * enhancement: x86-64 disassemblies are annotated with unboxed constant
378 values when there are references to (RIP-relative) unboxed constants.
379 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
380 of quadratically with the size of the input in the worst case.
382 * bug fix: handle errors when initializing *default-pathname-defaults*,
383 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
384 decoding errors, or directories being deleted.
385 * bug fix: Loading a core with a discontiguous dynamic space now correctly
386 computes the amount of dynamic space used.
387 * bug fix: disassembler missing ",8" on SHLD
388 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
389 that provide an "invalid" stack frame link for the signal handler
390 itself now use the saved-fp-and-pc mechanism to pick up from the stack
391 frame in the interrupt (signal) context. This is known to affect
392 threaded FreeBSD/x86-64.
393 * bug fix: some LOOP statements couldn't be compiled.
395 * bug fix: sb-sequence:dosequence works on literal vectors.
396 * bug fix: errors in generic arithmetic show the assembly routine's
397 caller on x86 and x86-64. (lp#800343)
398 * bug fix: Compile-time type errors should never result in COMPILE-FILE
400 * bug fix: Known bad local calls do not cause strange failures when
401 emitting or dumping code. (lp#504121)
402 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
403 codegen errors: type checks are inserted as necessary. (lp#1177703)
404 * bug fix: Unsigned modular arithmetic is correctly converted into signed
405 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
406 * bug fix: a combination of inlined local function with &optional and
407 recursion no longer causes undescriptive compiler errors. (lp#1180992)
408 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
409 when testing for non-zero-ness.
410 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
412 * bug fix: Type mismatch for the value of conditional expressions are
413 correctly reported when detected at compile-time, instead of complaining
414 about a constant NIL (similar for non-EQ-comparable catch tags).
415 * bug fix: Referring to INLINE global functions as values should not result
416 in a compilation failure. (lp#1035721)
417 * optimization: faster ISQRT on fixnums and small bignums
418 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
419 * optimization: On x86-64, the number of multi-byte NOP instructions used
420 for code alignment is now always minimal.
421 * optimization: On 64-bit targets, the compiler generates much faster
422 code for type checks for types known at compile time that are smaller
423 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
424 their COMPLEX variants.
425 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
426 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
427 * optimization: ROOM no longer conses so egregiously on non-x86oid
429 * optimization: associative bitwise operations reassociate patterns like
430 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
432 * optimization: quasiquote expressions now perform more constant folding,
433 instead of consing equal lists at runtime. (lp#1026439)
434 * optimization: local call analysis of inlined higher-order function
435 should converge more quickly, resulting in better code for complex
437 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
438 integer constants are handled more cleverly, especially when they
439 can be represented as sign-extended (signed-byte 32). (Based on a
440 patch by Douglas Katzman)
441 * optimization: IF/IF conversion should reliably result in sane code
442 when (some of) the results of the inner IF are always false or
444 * optimization: On x86oids, variable right shifts of machine words are
445 compiled into straight SAR/SHR, instead of going through the generic
448 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
449 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
451 * bug fix: :allocation slot option works for condition slots
453 * bug fix: redefining conditions does not lead to multiple evaluations of
454 hairy slot initfunctions anymore (lp#1164969)
455 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
457 * bug fix: function constants now work as initforms and default initarg
458 values of conditions (lp#539517)
459 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
460 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
461 * bug fix: no more bogus ## references when pretty printing backquoted
462 forms with non-trivial structure sharing. (lp#1161218)
463 * bug fix: Don't signal an error on (setf (documentation nil 'function)
464 "doc"). Signal a style-warning instead when trying to set documentation
465 of NIL for all other documentation types. (Reported by Zach
466 Beane; regression since 2e52fa05.)
467 * bug fix: modular arithmetic involving large constants and conditionals
468 should no longer result in spurious dead code elimination. (Reported by
470 * bug fix: our mach exception handler can seemingly called very early in
471 the program execution process on OS X 10.8.0. Try and handle that case
472 robustly, without potentially leaking mach ports too much.
473 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
475 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
476 * enhancement: the continuable error when defknown-ing over extant
477 fndb entries can be ignored by passing :overwrite-fndb-silently t
478 as a keyword argument to sb-c:defknown (after attributes). Useful
479 to allow defknown to be re-loaded. Use with :allow-other-keys t
480 for backward compatibility.
481 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
483 * bug fix: Prevent a make-array transform from modifying source forms
484 causing problems for inlined code. Thanks to Bart Botta.
485 (regression since 1.0.42.11-bis)
486 * bug fix: clear-output calls the correct gray stream routine,
487 sb-gray:stream-clear-output. (lp#1153257)
488 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
490 * bug fix: Better error messages for package operations (lp#1154776)
491 * bug fix: delete-package on a nonexistent package should signal a cerror.
492 (regression since 1.0.37.44).
493 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
494 (lp#1154946, lp#1072112)
495 * bug fix: compiling make-array no longer signals an error when the
496 element-type is an uknown type, a warning is issued instead.
497 Thanks to James Kalenius (lp#1156095)
498 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
499 produces wrong results for some inputs. (Thanks to Jan Moringen.)
502 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
503 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
505 * new feature: package local nicknames. See manual for details.
506 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
507 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
508 * enhancement: easier to use restarts for resolving name-conflicts
509 resulting from IMPORT, EXPORT, or USE-PACKAGE.
510 * enhancement: variant DEFPACKAGE forms now signal a full error with
511 restarts provided for resolving the situation. (lp#891351)
512 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
513 DEFPACKAGE forms can now signal a full error with restarts provided for
514 resolving the situation. See manual for details. (lp#891351)
515 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
516 (Thanks to Anton Kovalenko.) (lp#1102748)
517 * enhancement: backtrace improvements
518 ** secondary CLOS dispatch functions have better debug names (lp#503081)
519 ** easier to read method names in backtraces. See
520 SB-DEBUG:*METHOD-FRAME-STYLE*.
521 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
522 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
523 SB-DEBUG:BACKTRACE-AS-LIST.
524 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
525 information is available in less intrusive form as frame annotations.
526 * enhancement: SB-POSIX now provides MAP-ANON.
527 * enhancement: test-suite results are colorized, failures in red, unexpected
528 success in green. Works on Windows and on terminals with ANSI escape code
529 support. Can be disabled with --no-color.
530 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
531 (thanks to James M. Lawrence)
532 * bug fix: no more unused variable style warnings from RESTART-CASE
533 macroexpansion (lp#1113859)
534 * bug fix: no more unused variable style warnings when loading
535 sb-bsd-sockets.asd (lp#1114681)
536 * bug fix: deleting a package removes it from implementation-package
537 lists of other packages.
538 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
539 This does not fix the occasional "interrupt already pending" issue, though.
540 * bug fix: (setf (documentation 'x 'function)) and
541 (setf (documentation #'x t)) set documentation in different places.
542 (regression since 1.0.43.63)
543 * bug fix: build on newer glibc. (lp#1095036)
545 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
546 * optimization: LOOP expressions using "of-type character" have slightly
547 more efficient expansions.
548 * bug fix: very long (or infinite) constant lists in DOLIST do not result
549 in very long compile times or heap exhaustion anymore. (lp#1095488)
550 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
551 * bug fix: adjust-array ignored :initial-element for simple-vectors.
553 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
554 longer cause infinite loops (on circular data) or violate eqlity
555 constraints. (lp#1099708)
556 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
558 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
559 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
561 * enhancement: support for C-c to interrupt the foreground thread
562 on Windows. (Thanks to Anton Kovalenko.)
563 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
564 * enhancement: Safepoint builds on POSIX platforms can now optionally be
565 built without pseudo-atomic sequences and their run-time overhead.
566 * enhancement: Threads created outside of Lisp can enter Lisp through
567 alien callbacks and appear as Lisp threads for the duration of that
568 function invocation. On safepoint builds only.
569 * enhancement: Miscellaneous improvements to namestrings and underlying
570 calls to OS functions for file system access on Windows. (Thanks to
572 * enhancement: The MSI installer support for Windows now uses Windows
573 Installer XML at least version 3.5 and includes various usability
574 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
575 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
576 on Windows. (Thanks to Anton Kovalenko.)
577 * enhancement: The Windows backend now supports the x86-64 platform.
578 (Thanks to Anton Kovalenko.)
579 * bug fix: fasls are now once again directly executable (on platforms
580 supporting shebang lines, with a suitably-installed sbcl).
581 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
582 * bug fix: Fix CAS access to slots of direct instances of structure classes
583 in the presence of subclasses sharing the same conc-name.
584 * bug fix: Logical pathname namestrings on Windows have been changed to
585 be lower-case, to minimize differences between POSIX and Windows.
587 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
588 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
589 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
590 (NT 5.0) is no longer being maintained.
591 * notice: Starting with this version, SBCL on Windows no longer supports
592 building with disabled thread support.
593 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
594 * enhancement: New feature sb-dynamic-core allows the runtime to be
595 rebuilt or relocated without requiring changes to the core file on
596 all linkage table platforms. Required on Windows. (Thanks to Anton
598 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
599 * enhancement: I/O on Windows unnamed pipes is interruptible
600 asynchronously using interrupt-thread, timers when running on Windows NT
601 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
603 * enhancement: Support for the experimental safepoint-based stop-the-world
604 protocol on the PowerPC platform.
605 * bug fix: Non-blocking reads from the Windows console were not necessarily
606 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
607 * bug fix: stability of threads on Windows has been improved upon through
608 an updated stop-the-world protocol (thanks to Anton Kovalenko).
610 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
611 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
612 (COMPILE and COMPILE-FILE still do.)
613 * optimization: the SPARC backend now supports the precise generational
614 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
615 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
616 * enhancement: add experimental support for the SB-THREAD feature and the
617 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
618 Threads are enabled by default, and this version of SBCL is considered
619 to be the last and final release to officially support building with
621 * optimization: The compiler no longer rotates loops in some cases where
622 this transformation actually lead to worse code being generated.
623 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
624 symbol-macros by lexical bindings.
625 * bug fix: stack allocation was prevented by high DEBUG declaration in
627 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
628 (thanks to SANO Masatoshi)
629 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
630 :JUNK-ALLOWED was true.
631 * bug fix: type derivation inferred overly conservative types for
632 unions of array types. (lp#1050768)
634 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
635 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
636 source annotation of DISASSEMBLE output. Defaults to T.
637 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
638 WAIT-P argument added to WITH-RECURSIVE-LOCK.
639 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
641 * enhancement: Optional features (not enabled by default) allow the
642 use of signals for inter-thread synchronization to be reduced on certain
643 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
644 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
645 to test these experimental features. Known remaining bugs include minor
646 thread safety issues, less timely freeing of memory by GC, and certain
647 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
648 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
649 comparisons, particularly on almost-sorted inputs.
650 * bug fix: Reading floats with large exponents no longer takes too much time
651 before reporting that the exponent is too large.
652 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
653 correctly when the received datagram is larger than the provided buffer.
654 (lp#1023438, thanks to Robert Uhl)
655 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
656 a SYMBOL-VALUE form with a constant symbol argument.
657 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
658 into a DEFCAS defined place was used as the place.
659 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
660 for from bit-vectors.
661 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
662 lead to internal errors or crashes (lp#1058799).
663 * documentation: a section on random number generation has been added to the
666 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
667 * enhancement: implicit generic function warnings now specify the package
668 in which the new generic function is being created.
669 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
670 updates of CAS-able places (similar to Clojure's swap!).
671 * enhancement: run-program no longer decodes and re-encodes environment when
672 :environment argument is not provided. (lp#985904)
673 * enhancement: errors during compiler-macro expansion no longer cause
674 runtime errors, only a compile-time warning, otherwise behaving as if
675 the compiler macro had declined to expand.
676 * optimization: On x86-64, code alignment of block headers is done with
677 multi-byte NOPs now instead of repetitions of the single-byte NOP.
678 * optimization: MAP-INTO is substantially faster when the target sequence is
679 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
680 thanks to James M. Lawrence)
681 * optimization: the compiler no longer heap-conses to check exits in cases
682 where the exit function is dynamic extent, or when it can prove the exit
683 function cannot escape. (lp#1002534)
684 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
685 element type, and vectors that aren't SIMPLE-ARRAYs.
686 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
687 speed (around 1/3 the time in some cases), and a little better in terms of
688 comparison calls. (Thanks to Takeru Ohta)
689 * bug fix: On SPARC, a limitation on the number of code constants emittable
690 by the compiler has been lifted, allowing certain long functions to
691 compiled and assembled which had previously been unsupported; fixes
692 cl-bench on this ISA (lp#1008996).
693 * bug fix: potential for infinite recursion during compilation of CLOS slot
694 typechecks when dependency graph had loops. (lp#1001799)
695 * bug fix: error forms reported with some program-errors were not escaped
697 * bug fix: functions from EVAL are now on more equal footing with functions
698 from COMPILE. (lp#1000783, lp#851170, lp#922408)
699 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
700 objects as its :METHOD-COMBINATION argument, not just lists designating
701 method combinations. (lp#936513)
702 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
704 * bug fix: restore build on solaris/sparc. (lp#1008506)
705 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
706 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
707 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
708 as keyword arguments no longer accidentally match unevaluated symbols
710 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
711 parameter was zero, now it signals an error. (lp#905817, fixed since
713 * bug fix: run-program with :pty t no longer makes the pty as the process's
715 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
718 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
719 * RANDOM enhancements and bug fixes:
720 ** bug fix: the range and distribution of random integers could be
721 catastrophically wrong when the compiler derived the type of its
722 argument as a disjoint set of small integers.
723 ** bug fix: the distribution of random integers is now completely
724 uniform even when the specified limit is not a power of two.
725 (Previously some values could be about 0.1 % more probable than
726 others in the worst case.) (lp#309467)
727 ** RANDOM on large integer arguments is generally faster and conses
728 less than before; this is visible for fixnums above a length of
729 about 24 bits, but extremely so for bignums: the old implementation
730 used time and space quadratical in the size of the argument there,
731 the new one is linear.
732 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
733 main entry point, SB-EXT:QUIT is deprecated.
734 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
735 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
736 * enhancement: FASL loading no longer grabs the world-lock.
737 * enhancement: GENCGC reclaims space more aggressively when objects being
738 allocated are a large fraction of the total available heap space.
740 * enhancement: backtraces show the correct number of arguments for frames
741 called with too many arguments.
742 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
744 * enhancement: ASDF has been updated 2.21.
745 * optimization: fewer uses of full calls to signed modular functions.
747 * optimization: typechecking alien values is typically 5 x faster.
748 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
750 * bug fix: file compilation performance issues when dumping subtypes
751 of CHARACTER (lp#994487)
752 * bug fix: fixed disassembly of some SSE instructions on x86-64.
753 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
754 OPEN. (lp#969352, thanks to Kambiz Darabi)
755 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
757 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
758 classoid even if X was not the proper name of the class. (lp#941102)
759 * bug fix: declaration leakage between lexical environments due to careless
760 use of NCONC in MAKE-LEXENV. (lp#924276)
761 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
762 *default-pathname-defaults* contains NAME or TYPE components.
763 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
764 from CL package, e.g. (loop . 10).
765 * bug fix: run-program with existent or non-existent files for :output or
766 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
767 returns NIL instead of signalling an obscure error.
768 * bug fix: fix miscompilation of some logand forms with large constant
769 arguments. (lp#974406)
770 * bug fix: account for funcallable-instance objects properly in ROOM.
771 * bug fix: incorrect octets reported for c-string decoding errors.
773 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
775 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
776 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
777 allowing faster release of memory back to the OS. (lp#991293)
778 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
779 existing deadline for the dynamic scope of its body.
780 * bug fix: compiler-internal interval arithmetic needed to be more
781 conservative about open intervals when operated on by monotonic but not
782 strictly-monotonic functions. (lp#975528)
783 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
784 it's also slightly faster. (lp#998926)
785 * bug fix: better error messages for malformed declarations.
787 * bug fix: define-condition didn't return the name of the defined condition.
789 ** improved docstrings: REPLACE (lp#965592)
791 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
792 * bug fix: fix copy-structure. When copying from stack to heap, garbage
793 could end up in the heap making GC unhappy.
794 (Thanks to James Knight, lp#911027)
796 ** SBCL can now be built using Clang.
797 ** ASDF has been updated 2.20.
798 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
799 * bug fix: don't complain about a too-hairy lexical environment for inlining
800 when the function has never been requested for inlining. (lp#963530)
802 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
803 * enhancements to building SBCL using make.sh:
804 ** --fancy can be specified to enable all supported feature enhancements.
805 ** --with-<feature> and --without-<feature> can be used to specify
806 which features to build with.
807 ** --arch option can be used to specify the architecture to build for.
808 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
809 full-blows cross-compilation.)
810 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
811 which allows specifying name of the default interning package for the
813 * enhancement: when *READ-EVAL* is true, arrays with element type other than
814 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
815 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
816 null alien when malloc() fails. (lp#891268)
817 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
818 conditions can be conveniently accessed through function with the same
819 name, analogously to CONTINUE.
820 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
821 from the printer by type, causing an error marker to be printed instead.
822 (Thanks to Attila Lendvai)
823 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
824 generally behave better when errors occur during printing.
825 * enhancement: the test runner now takes a --report-skipped-tests argument
826 to report the individual tests skipped as well as the number of skipped
828 * enhancement: undefined functions now appear in backtraces as ("undefined
829 function") instead of ("bogus stack frame") on x86oids.
830 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
831 deadlock errors are reported in an easier-to-decipher manner.
832 * enhancement: DESCRIBE on type designators reports the expansion in more
834 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
835 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
836 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
837 * enhancement: better disassembly of segment-prefixes on x86 and other
838 instruction prefixes (e.g. LOCK) on x86 and x86-64.
839 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
840 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
841 * optimization: SUBSEQ on vectors of unknown element type is substantially
843 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
844 be stack-allocated. (lp#902351)
845 * optimization: the compiler is smarter about representation selection for
846 floating point constants used in full calls.
847 * optimization: the compiler no longer refuses to coerce large fixnums to
848 single floats inline, except on x86 where this limitation is still
850 * optimization: truncation operations on integers with constant divisor
851 arguments 1 and -1 are optimized away.
852 * bug fix: deadlock detection could report the same deadlock twice, for
853 two different threads. Now a single deadlock is reported exactly once.
854 * bug fix: interval-arithmetic division during type derivation did not
855 account for signed zeros.
856 * bug fix: compiler error when typechecking a call to a function with
857 non-constant keyword arguments.
858 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
859 * bug fix: condition slot accessors no longer cause undefined function
860 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
861 form that defines them. (lp#896379)
862 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
864 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
865 bogusly report NIL, T.
866 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
867 required arguments ignored and performed assignments to others.
869 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
870 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
871 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
872 * bug fix: redefining a function whose previous definition contained an
873 unknown type no longer causes a style-warning. (lp#806243)
874 * bug fix: undefined functions now appear in backtraces as ("undefined
875 function") instead of ("bogus stack frame") on non-x86oids.
876 * bug fix: backtraces are no longer cut off at ("undefined function") when
877 called under certain circumstances (involving a caller-allocated stack
879 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
880 systems. (regression since 1.0.53)
881 * bug fix: GC deadlocks from dladdr() on certain platforms.
882 * bug fix: broken standard streams no longer automatically cause recursive
883 errors on debugger entry.
884 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
885 (regression since 1.0.53)
886 * bug fix: attempts to stack allocate a required argument to a function with
887 an external entry point caused compiler-errors.
888 * bug fix: compiler notes for failed stack allocation for a function argument
889 no longer claim to be unable to stack allocate the function.
890 * bug fix: COERCE now signals a type-error on several coercions to
891 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
892 * bug fix: missing failure-to-stack-allocate compiler notes for some
893 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
894 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
896 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
898 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
899 * minor incompatible changes:
900 ** RENAME-FILE on a symbolic links used to rename the linked-to file
902 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
903 directory, but now signal an error instead. Use TRUENAME to resolve the
904 pathname if you wish to delete the linked directory, and DELETE-FILE if
905 you wish to delete the
906 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
907 symbols associated with it will trigger a compile-time warning.
908 * thread-related enhancements:
909 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
910 Many thanks to generous donors!)
911 ** Threading is now more reliable on non-Linux platforms. We still don't
912 consider threads on non-Linux platforms good enough to enable them by
913 default, but they're in a clearly better shape now.
914 ** Deadlines supported now on all platforms.
915 ** All blocking functions in the threading API now have a :TIMEOUT
917 ** Semaphore notification objects have been added to SB-THREAD.
918 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
919 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
920 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
921 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
922 using an API anologous to defining new SETFable places.
923 * GC-related enhancements and bug fixes:
924 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
925 and Gb suffixes. Default is megabytes as before.
926 ** on GENCGC targets, the default dynamic space size is now 512Mb for
927 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
928 exception, defaulting to mere 444Mb to fit under default ulimits.) The
929 new defaults are in place to prevent hitting swap on low-end systems.
930 Use build-time option --dynamic-space-size to build an SBCL with
931 another default, or the runtime option to adjust the size at startup: a
932 good size is at most equal to the amount of physical memory the system
934 ** on GENCGC targets, nursery and generation sizes now default to 5% of
936 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
937 refuses to create SIMPLE-FUN objects.
938 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
940 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
941 validation of pointer objects as GENCGC does, instead of a
942 comparatively weak bounds-check against the heap spaces.
943 * SB-BSD-SOCKETS bug fixes:
944 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
945 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
946 systems with getaddrinfo().
947 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
948 safe outside systems with getaddrinfo().
949 * enhancement: ASDF has been updated 2.019.
950 * enhancement: special-case TCO prevention for functions which never return
951 extended to untrusted types, keeping one more frame's worth of debug
952 information around in many cases.
953 * enhancement: debug-names of anonymous and local function are more
954 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
955 * enhancement: on win32, ABS of complex floats guards better against
956 overflows. (lp#888410)
957 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
958 process exiting with code 1. (lp#676987)
959 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
960 the system where on the filesystem the SBCL sources themselves are
961 located. (Thanks to Zach Beane)
962 * enhancement: the compiler is now able to derive tighter bounds for
963 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
964 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
965 correctly, even on wide-fixnum builds. (lp#887220)
966 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
967 resolved to directories.
968 * bug fix: type mismatch when assigning to lexical variables no longer
969 result in fasl-dumping internal type objects. (lp#890750)
970 * bug fix: type mismatch on (SETF AREF) and function return values no
971 longer result in fasl-dumping internal type objects.
972 * bug fix: With several combinations of argument types, for example (EXPT
973 <integer> <(complex double)>), EXPT now uses double-precision throughout
974 instead of partially calculating only to single-precision. (lp#741564;
975 thanks to Lutz Euler)
976 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
977 objects when interrupted by GC on PPC.
979 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
980 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
981 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
982 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
983 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
984 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
985 targets is now 63 bits (up from 61).
986 * enhancement: DESCRIBE now reports a lambda-list and source location
987 for complext setf-expanders.
988 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
989 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
990 of multiple-valued places to be set to NIL, instead of signalling an
991 error (per a careful reading of CLHS 5.1.2.3).
992 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
993 * bug fix: repair crash in x86oid darwin signal handling emulation
994 when built with certain compilers.
995 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
996 rotation arguments on x86-64. (lp#882151)
997 * bug fix: low-level control flow optimisations could result in bogus
998 code in functions with tail and non-tail calls to local functions on
1000 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1001 to emit literal characters > (code-char 4095), for comparisons with
1002 constant characters.
1003 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1004 on 64 bit platforms. (lp#881445)
1005 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1006 delete the wrong file when using relative pathnames. (lp#882877)
1007 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1008 sequences and :KEY NIL.
1010 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1011 * enhancement: ASDF has been updated to version 2.017.
1012 * enhancement: the --core command line option now accepts binaries with
1014 * enhancement: when built with :sb-core-compression, core files (regular
1015 or executable) can be compressed with zlib. Use the :COMPRESSION
1016 argument to SAVE-LISP-AND-DIE to specify a compression level.
1017 * enhancement: --[no-]merge-core-pages determines whether the runtime
1018 hints the operating system that identical core pages between SBCL
1019 processes should share the same physical memory. Default is to only
1020 enable this for compressed cores.
1021 * optimization: SLEEP no longer conses.
1022 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1023 or bit-vectors when using the standard pretty-print dispatch table.
1024 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1026 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1027 AREF, CHAR, etc. (lp#826971)
1028 * bug fix: compiler-errors causes by integer arguments with composed of
1029 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1030 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1031 expressions. (lp#770184)
1032 * bug fix: complex single float literals are correctly aligned when used
1033 as arguments of arithmetic operators.
1034 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1035 fixnum is correct. (reported by Peter Keller)
1036 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1037 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1039 * bug fix: redefining classes such that slots with custom allocation are
1040 added or removed works again.
1042 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1043 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1044 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1045 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1046 * enhancement: added support for socket keepalive timeout intervals
1047 and probe counts on Linux.
1048 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1049 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1050 * enhancement: added new toplevel options --quit and --non-interactive
1052 * enhancement: the Windows port of SBCL now builds and runs on Wine
1053 (thanks to Anton Kovalenko).
1054 * enhancement: more, and more correct, SSE instruction definitions on
1055 x86-64 (thanks to Alexander Gavrilov).
1056 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1057 to help the processor execute spin loops, when applicable. Currently
1058 implemented for x86 and x86-64.
1059 * optimization: unsigned integer divisions by a constant are implemented
1060 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1061 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1062 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1063 instructions. (lp#814688)
1064 * bug fix: COERCE to unfinalized extended sequence classes now works.
1065 (reported by Jan Moringen; lp#815155)
1066 * bug fix: a compiler error during typecheck generation, reported by Eric
1067 Marsden. (lp#816564)
1068 * bug fix: obsolete instance protocol fires when shared slots are added
1070 * bug fix: fixed-format floating point printing with scaling factors.
1072 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1073 backtraces. (lp#818460)
1074 * bug fix: better backtraces for interrupted syscall frames on x86.
1076 * bug fix: SSE comparison instructions can be disassembled even when one
1077 operand is in memory. (lp#814702)
1078 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1079 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1080 type information associated with the VALUES form.
1081 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1083 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1084 first write (lp#561642).
1085 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1086 * bug fix: bound propagation involving conversion of large bignums to
1087 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1089 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1090 functions; reported by Lutz Euler (lp#826459).
1091 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1094 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1095 * enhancement: errors from FD handlers now provide a restart to remove
1096 the offending handler.
1097 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1099 * enhancement: location of user or system initialization file can now easily
1100 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1101 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1102 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1103 the thunk, as a keyword argument, :arguments.
1104 * enhancement: constraint propagation is simplified (and sped up) when
1105 COMPILATION-SPEED > SPEED.
1106 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1107 * enhancement: debugger understands &MORE arguments better.
1108 * optimization: extracting bits of a single-float on x86-64 has been
1109 optimized. (lp#555201)
1110 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1111 when (> SPEED SPACE).
1112 * optimization: local call trampolines (x86 and x86-64) are emitted
1114 * optimization: implicit value cells for dynamic-extent closed-over bindings
1115 on x86 and x86-64 can hold unboxed values as well.
1116 * meta-optimization: improved compilation speed, especially for large
1117 functions. (lp#792363 and lp#394206)
1118 * bug fix: bound derivation for floating point operations is now more
1119 careful about rounding possibly closing open bounds. (lp#793771)
1120 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1121 backwards incompatible change in 1.0.48.27)
1122 * bug fix: occasional debugger errors in when a type-error occured in a
1123 function with dynamic-extent &rest list.
1124 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1125 boa-construtors can be used to initialized structure slots.
1126 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1127 (lp#795705, regression)
1128 * bug fix: DIRECTORY works better on logical pathnames.
1129 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1130 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1131 * bug fix: the compiler no longer constant-folds NaNs in
1132 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1133 * bug fix: FORMAT now handles floating point rounding correct, eg.
1134 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1136 * bug fix: style warning during lambda-list introspection of generic
1137 functions with both optional and key argments.
1138 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1139 folding. (lp#729765)
1140 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1143 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1144 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1145 interrupts for its body.
1146 * enhancement: source locations are now available for files loaded as
1147 source, compile-time-too evaluation, and initialization files.
1148 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1149 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1150 when a temporary file is used for compilation.
1151 * enhancement: ASDF has been updated to version 2.015.3.
1152 * enhancement: backtraces involving frames from the default evaluator are
1154 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1156 * enhancement: more informative compile-time warnings and runtime errors for
1157 type-errors detected at compile-time.
1158 * enhancement: deadlock detection for mutexes and spinlocks.
1159 * enhancement: dynamic-extent for &rest lists stack allocate only their
1160 spines, not their argumets. While portable code should not rely on this,
1161 particularly in combination with inlining, it should make dynamic-extent
1162 easier to use safely.
1163 * enhancement: SB-POSIX improvements:
1164 ** WNOHANG and WUNTRACED are exported.
1165 ** SYSCALL-ERROR now also provides the name of the failing system call.
1166 * enhancement: --script improvements:
1167 ** errors on standard input, output, and error streams are handled and
1168 cause scripts to exit silently, making them easier to use in shell
1170 ** backtraces from scripts now go to standard error instead of the
1171 terminal even if one is available.
1172 ** --script can be an argument, causing the script to be loaded from
1174 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1175 strings to foreign memory.
1176 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1177 a file, making it easier to understand heap dynamics.
1178 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1179 allows the compiler to automatically elide rest-list allocation so long as
1180 the call sites are in functions that the compiler knows cannot escape.
1182 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1183 especially in safe code when none of the required arguments have changed
1185 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1186 uninterruptible, as well as blocking reads from socket streams created
1187 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1188 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1189 from the to-char if the from-char is not a dispatch-macro character.
1190 * bug fix: references to undefined variables in function calls that are
1191 optimized away now signal a runtime error. (lp#722734)
1192 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1193 types from a function defined in the same file. (regression from
1195 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1197 * bug fix: spurious errors during QUIT when standard streams were closed.
1199 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1200 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1201 years, is now no longer supported.
1202 * enhancement: read() and write() have been added to SB-POSIX.
1203 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1204 accurately, allowing better typechecking of call-sites.
1205 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1206 are no longer caught. (reverted to pre 1.0.34 behaviour)
1207 * optimization: slightly faster ISQRT. (lp#713343)
1208 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1209 * bug fix: TRACE behaves better when attempting to trace undefined
1210 functions. (lp#740717)
1211 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1212 to (FUNCALL #'(LAMBDA ...) ...).
1213 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1214 a compile-time error. (lp#720382)
1215 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1217 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1218 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1219 optimization. (regression from 1.0.45.18/1.0.46.15)
1220 * bug fix: package locks did not protects against compile-time side-effects
1221 of DEFUN. (lp#675584)
1222 * bug fix: --dynamic-space-size argument is validated more carefully.
1224 * bug fix: memory fault from printing a malformed simple-condition.
1226 * bug fix: redefining classes so that slot-definition classes change now
1227 engages the obsolete instance protocol. (lp#766271)
1228 * bug fix: constant improper lists could break source coverage recording.
1230 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1231 could exhaust stack.
1233 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1234 * bug fix: fix mach port rights leaks in mach exception handling code on
1235 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1237 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1238 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1239 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1240 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1241 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1242 processed using EVAL -- now the appropriate toplevel form is reported instead.
1243 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1244 declarations. (lp#726331)
1245 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1246 that NIL/NULL is excluded from the type.
1247 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1249 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1250 and its compatriots.
1251 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1252 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1253 stack-allocated values out of their dynamic-extent. (lp#310175)
1254 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1255 x86-64 builds caused a type-error.
1256 * bug fix: calling COMPILE with something else than a lambda-expression as the
1257 second argument reports a more sensible error. (lp#718905)
1258 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1259 are detected. (lp#520607)
1260 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1262 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1263 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1264 methods. (regression from 1.0.45.18)
1265 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1266 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1267 * bug fix: several foreign functions accepting string also accepted NIL and
1268 consequently caused a memory fault at 0 now signal a type-error instead.
1270 * bug fix: under rare circumstances, constraint propagation could rewrite a
1271 variable reference to refer to a variable not in scope, causing an error
1272 during physical environment analysis when attempting to close over the
1273 variable. (lp#551227)
1274 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1276 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1277 * enhancement: largefile support on Solaris.
1278 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1279 arguments (lp#710017)
1280 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1281 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1283 * optimization: ERROR and CERROR are approximately 5 times faster.
1284 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1285 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1286 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1287 up instance creation in those cases.
1288 * optimization: arithmetic operations with multiple constant arguments in now
1289 have them reduced at compile-time. (lp#676414)
1290 * optimization: determining current character position on string-streams for
1291 pretty-printing was overly slow.
1292 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1293 lifetime analysis to overwrite closed-over variables (lp#681092).
1294 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1295 were not handled correctly (lp#713063).
1296 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1298 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1299 mistake. (lp#667297).
1300 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1301 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1302 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1303 unintern the wrong symbol with the same name. (lp#693796)
1304 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1305 making it possible to restore the initial table if it has been messed up.
1308 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1309 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1310 Refer to documentation for details.
1311 * enhancement: ASDF has been updated to version 2.010.
1312 * optimization: mutated closed-over variables that are only accessed by
1313 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1314 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1315 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1316 * optimization: UNWIND-PROTECT cleanup functions are now declared
1318 * bug fix: backtracing function with &REST arguments now shows the full
1319 argument list. (lp#310173)
1320 * bug fix: return types for functions with complex lambda-lists are now
1321 derived properly (lp#384892)
1322 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1323 long string arguments slowed the compiler down to a crawl.
1324 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1325 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1326 in the DEFMETHOD body.
1327 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1328 messages, being instead replaced with the corresponding function name.
1329 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1330 operators. (lp#309448)
1332 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1333 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1334 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1335 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1337 * enhancement: default dynamic-space size can be configured at build-time
1338 without touching source, using the --dynamic-space-size argument to make.sh.
1339 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1340 qualities, and mentions ALWAYS-BOUND declarations.
1341 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1343 * enhancement: ASDF has been updated to 2.009.
1344 * enhancement: the system detects known type-erros in calls better,
1345 signalling a full warning about violated proclaimed FTYPEs and violations
1346 of derived FTYPEs within the same file, including self-calls.
1347 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1348 * optimization: constant-folding exploits numeric and character types, in
1349 addition member types.
1350 * optimization: numeric, character and member types that are inhabited by
1351 exactly one value are tested with EQL.
1352 * optimization: more conditional branches are eliminated during IR1.
1353 Branches are simplified before performing if/if-conversion, and simple
1354 equivalent branches (that only read the same constant or variable) are
1356 * improvements to the Windows port:
1357 ** change: canonical unparsing form for pathname namestrings now uses / as
1358 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1359 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1360 on Windows. (thanks to Kalyanov Dmitry)
1361 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1363 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1364 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1365 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1366 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1368 * bug fix: interrupts arriving during CL:OPEN caused an error.
1369 * bug fix: overeager character buffering could cause input to block
1370 spuriously when reading from a pipe (lp#643686)
1371 * bug fix: more efficient timer expiry should avoid starvation on systems
1372 where number of SIGALRMs per second is restricted. (lp#375515)
1373 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1374 * bug fix: compile-times no longer scale linearly with the size of
1375 quoted lists in source-code. (lp#654289)
1376 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1377 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1378 so badly. (lp#654485)
1379 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1380 an error for eg. STRUCTURE. (lp#458015)
1381 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1382 (lp#613871, thanks to Roman Marynchak)
1383 * bug fix: more reliable &REST list type derivation. (lp#655203)
1384 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1385 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1386 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1387 also declared NOTINLINE. (lp#655581)
1388 * bug fix: the compiler could attempt to emit constant left shifts of
1389 greater value than n-word-bits. (lp#309063)
1390 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1391 type information for the function being set. (lp#659220)
1392 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1393 containing self-calls were recompiled with a new signature, and failed
1394 to warn when a self-call using the old signature was left in. (lp#655126)
1395 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1396 :DEFAULT when the default external had character size other than 8 bits.
1398 * bug fix: derived types of functions in the same file were implicitly
1399 trusted, leading to potential heap corruption when those function were
1400 defined incompatibly. (lp#657499)
1401 * bug fix: existing ASDF source registries are ignored when building
1402 contribs (lp#659105)
1403 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1404 (lp#655824, thanks to Roman Marynchak)
1405 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1406 package-lock violation was detected. (lp#660752)
1407 * bug fix: the system can store different docstrings for a single function
1408 under different names. (lp#661631, regression from 1.0.29.24)
1409 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1410 properly. (lp#384801)
1411 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1412 of specified length could confuse the type derivation in unsafe code.
1414 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1415 fork with multiple Lisp threads running is made on every platform,
1416 not just Darwin. (lp#451111)
1417 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1418 around when core was saved, which could cause undefined behaviour when the
1420 * bug fix: Allow UNTRACE of functions that are no longer defined
1421 (lp#667657, thanks to Attila Lendvai)
1422 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1423 compile-time warning (lp#664373, thanks to Stas Boukarev)
1425 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1426 * incompatible change: FD-STREAMS no longer participate in the serve-event
1427 event-loop by default. (lp#316072)
1428 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1429 affects streams from CL:OPEN.
1430 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1431 default, but this is liable to change: applications needing serve-event
1432 for socket streams should explicitly request it using :SERVE-EVENTS T
1434 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1436 * enhancement: CLOS effective method functions and defclass slot typechecking
1437 function now have debug names for use in backtraces and profiles.
1438 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1440 * enhancement: symbols are printed using fully qualified names in several
1441 error and warning messages which are often associated with package
1442 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1443 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1444 thanks to Andrew Golding)
1445 * bug fix: reading /proc files on Linux works. (lp#425199)
1446 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1448 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1449 breaking code that tried to write the value of a printer control variable.
1450 (lp#581564, thanks to Stas Boukarev)
1451 * bug fix: WRITE compiler macro did not handle output stream designators
1452 correctly. (lp#598374, thanks to Stas Boukarev)
1453 * bug fix: better availability of names of foreign functions in backtraces
1454 on Linux. (lp#626962, thanks to Stas Boukarev)
1455 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1456 lp#627581, thanks to Josh Elsasser and Jim Wise)
1457 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1458 thanks to Josh Elsasser)
1459 * bug fix: using aliases for builtin classes as defmethod specializers
1460 without adding DEFTYPEs for them works. (lp#618387)
1461 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1463 * bug fix: legally dynamic-extent lists and vectors used as
1464 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1465 * bug fix: inline-expansion creating references to dead lambda-variables
1466 (lp#454681, thanks to Alexey Dejneka)
1467 * bug fix: better error message for bogus numerical arguments to RANDOM.
1468 (lp#598986, thanks to Stas Boukarev)
1469 * bug fix: the compiler occasionally inlined references from incompatible
1470 environments occurs. (lp#308951)
1471 * bug fix: the compiler threw an error when trying to compile a local
1472 function (labels or flet) known to take a specialized complex argument.
1473 (not in launchpad, reported by sykopomp in #lispgames)
1474 * bug fix: package-locks failed to protect against compile-time effects of
1475 DEFUN when the symbol previously had a macro definition. (lp#576637)
1476 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1477 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1478 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1479 * bug fix: evaluation in debugger REPL works using the global context when
1480 in frames that do not have sufficient debug information.
1481 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1483 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1485 * bug fix: interrupt taking longer than the requested period caused SLEEP
1486 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1488 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1490 ** Cross-compilation host is now specified to make.sh using
1491 command-line argument --xc-host=<command> instead of a positional
1492 argument. (thanks to Daniel Herring)
1493 ** Install location can be specified to make.sh using command-line
1494 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1495 * optimization: The default implementation of
1496 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1497 * enhancement: Explicit memory barrier operations are now available for use
1498 by multithreaded code. See documentation for details.
1499 * enhancement: Experimental support for threading on Linux/PPC.
1500 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1501 * bug fix: EXPT signals an error if first argument is a zero and second
1502 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1503 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1504 (lp#576594, thanks to Roman Marynchak)
1505 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1506 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1508 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1509 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1510 cached, leading to many fewer expensive calls to
1511 COMPUTE-APPLICABLE-METHODS.
1512 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1513 CLASS argument, search for and call an appropriate optimized ctor function
1515 * bug fix: WRITE always returns the correct value.
1517 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1518 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1519 * bug fix: Name conflicts between symbols passed as arguments to a single
1520 call to IMPORT no longer add multiple symbols with the same name to the
1521 package (detectable via DO-SYMBOLS).
1522 * bug fix: support building without the dlshim on darwin x86 and x86-64
1524 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1526 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1527 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1529 * bug fix: linkage-table entries on PPC now no longer overflow their
1530 space allocation (potentially causing crashes if they are written out
1532 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1533 platforms, preventing the GC from seeing stale pointers on the control
1534 stack in subsequent GCs (which would, and does, break invariants).
1535 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1536 * bug fix: Literal characters with code points greater than about 32767
1537 now work on PPC UNICODE builds.
1538 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1539 high order bits are explicitly cleared out. In some contrived situations,
1540 this could lead to wrong results in mixed real/complex float arithmetic.
1541 * bug fix: Fix function/macro redefinition warnings when building with
1542 clisp. (lp#576787, thanks to Josh Elsasser)
1543 * new platform: experimental support for ppc/openbsd (thanks to Josh
1545 * bug fix: Floating-point traps now work on ppc/linux.
1547 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1548 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1549 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1550 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1551 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1552 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1553 SB-THREAD:GRAB-MUTEX.
1554 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1555 contain additional data structures and tools for concurrent programming;
1556 at the moment it contains a lock-free queue, and a lock-free mailbox
1558 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1559 GET-MUTEX but takes &key rather than &optional parameters. Also added
1560 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1562 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1563 SB-THREAD:WAIT-ON-SEMAPHORE.
1564 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1566 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1567 conditions to defer the deadline for forever.
1568 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1570 * enhancement: errors from NO-APPLICABLE-METHOD and
1571 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1572 generic function call.
1573 * enhancement: SB-BSD-SOCKET improvements
1574 ** sockets and socket streams now have a more informative printed
1575 representation based on the corresponding SOCKET-NAME and
1577 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1579 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1580 CL:CLOSE when appropriate, and no longer disassociates the stream
1581 from the socket if close failed. (lp#543951)
1582 * improvements to the instrumenting profiler
1583 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1584 ** optimization: counters no longer use locks for the overflow mode.
1585 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1586 incurred an off-by-one miscount.
1587 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1588 * enhancement: improved DEFMETHOD pretty-printing.
1589 * enhancement: perform range reduction when arguments are too large for
1590 x87's transcendentals (instead of returning 0). (lp#327192)
1591 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1592 some of CL-PPCRE's macros. (lp#570079)
1593 * enhancement: our machine code is slightly less hostile to valgrind on
1595 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1596 to Robert Swindells and Aleksej Saushev)
1597 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1598 * bug fix: a rare case of startup-time page table corruption.
1599 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1600 to timeouts could be left in an inconsistent state.
1601 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1602 * bug fix: misoptimization of multiplication by one in
1603 (SB-C::FLOAT-ACCURACY 0) policies.
1604 * bug fix: miscounts in SB-PROFILE.
1605 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1606 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1607 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1608 up itself" (March 2010) for further details.
1609 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1610 against length of the list if the element is found before the specified
1611 END is reached. (thanks to Alec Berryman, lp#554385)
1612 * bug fix: errors signalled during package graph modification no longer
1613 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1614 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1615 :SB-DOC feature. (lp#552564)
1616 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1617 * bug fix: more robust runtime executable path detection. (lp#375549)
1618 * bug fix: GCD always returns positive values. (lp#413680)
1619 * bug fix: Converting division to multiplication by reciprocal handles
1621 * bug fix: We were too eager in eliding range reduction tests on x87.
1622 The maximal magnitude is 2^63, not 2^64.
1623 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1625 * bug fix: Maybe restore buildability on Alpha.
1626 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1628 * bug fix: RANDOM-STATE can be printed readably again.
1629 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1630 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1631 types) could result in type mismatches during compilation.
1633 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1634 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1635 stack frame thrown from.
1636 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1637 compiler optimization qualities inside dynamic extent of its body.
1638 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1639 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1641 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1642 constraint propgation, allowing better compilation eg. when used to
1643 access structures with WITH-SLOTS. (lp#520366)
1644 * optimization: the compiler is now more aware of the type of the underlying
1645 storage vector for multidimensional simple arrays resulting in better code
1646 for accessing such arrays.
1647 * optimization: passing NIL as the environment argument to TYPEP no longer
1648 inhibits optimizing it. (lp#309788)
1649 * optimization: more efficient register usage when handling single-float
1650 arguments on x86-64. (thanks to Lutz Euler)
1651 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1652 pre-allocated temporary vectors. (lp#496249)
1653 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1654 in :INITIAL-CONTENTS. (lp#523612)
1655 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1656 functions. (lp#524707)
1657 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1658 WITH-SLOTS usages during compilation.
1659 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1660 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1661 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1662 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1663 instruction (tested on x86oid linux with ud2-breakpoints).
1664 * bug fix: slam.sh now works on win32.
1665 * bug fix: better differences of numeric types. (lp#309124)
1666 * bug fix: arrays declared intersection and union types can have their
1667 upgraded element type derived. (lp#316078)
1668 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1669 threads started during profiling. (lp#472499)
1670 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1672 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1673 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1674 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1675 values instead of signaling an error. (lp#309093)
1676 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1678 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1679 declarations (lp#497321)
1680 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1681 and failed to detect circular lists (lp#452008)
1682 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1684 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1685 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1686 due to it, so that handlers can run.
1687 * bug fix: reparsing undefined types if they have become defined since
1688 parsing. (lp#309128)
1689 * bug fix: missing &REST type in a proclamation for a function with both
1690 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1691 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1692 expanded calls (lp#542174)
1693 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1694 than just at toplevel form.
1696 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1697 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1698 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1699 but work on type specifiers.
1700 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1701 to name a type specifier.
1702 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1703 specifier is valid where "valid" basically means "would be accepted as
1704 second argument of TYPEP".
1705 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1706 returns the function's declared, or derived FTYPE.
1707 * new feature: SB-POSIX now supports accessing the d_ino member of
1708 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1709 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1710 provide for seeding a RANDOM-STATE object with user-provided data or
1711 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1712 attempt to initialize the returned state from the operating system's
1713 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1714 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1715 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1716 * bug fix: Fix grammar and style issues for the docstrings of
1717 printer-related variables and functions. (Thanks to mon_key; launchpad
1719 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1721 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1722 in a row even though a handler defered the deadline long into the
1724 * bug fix: A deadline handler was run without interrupts enabled for a
1725 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1726 in infinitely spinning, non-killable threads.
1727 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1728 before reaching the erring stack frame.
1729 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1730 real power. (launchpad bug lp#525949)
1731 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1732 GENCGC platforms. (launchpad bug lp#529014)
1733 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1734 (launchpad bug lp#525916)
1735 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1736 (Thanks to Robert Goldman)
1738 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1739 * optimization: ROUND with a single single-float or double-float argument
1740 is properly inlined when possible.
1741 * optimization: Slightly better code is generated for integer<->float
1742 conversions and for single-float<->double-float conversions on x86-64.
1743 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1744 code for 32-bit and 64-bit rotations on x86-64.
1745 * bug fix: The install script changes the ownership of directories as well
1746 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1747 launchpad bug lp#508485)
1748 * bug fix: TRUNCATE with a single single-float or double-float argument is
1749 properly inlined when possible. (launchpad bug lp#489388)
1750 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1751 no longer causes a compiler error on x86 and ppc.
1752 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1753 always relative to *READTABLE* rather than the passed argument.
1755 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1756 * minor incompatible change: threading support is now enabled by default
1758 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1760 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1761 are now caught and reported just like errors during macroexpansion.
1762 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1763 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1764 * enhancement: ASDF systems can now depends on SB-QUEUE.
1765 * fixes and improvements related to Unicode and external formats:
1766 ** bug fix: error handling and restart usage in the ucs-2 external format
1768 ** there is now an implementation of the ucs-4 external format.
1769 ** the utf-16 and utf-32 external formats are supported.
1770 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1771 in the environment. setenv() and unsetenv() are also provided. (reported by
1772 Fare Rideau; launchpad bug lp#460455)
1773 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1774 loading. This ensures sensible errors for .FASL files from other
1775 implementations on case-insensitive filesystems. (reported by Willem
1776 Broekema; launchpad bug lp#489417)
1777 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1778 Willem Broekema; launchpad bug lp#489698).
1779 * bug fix: some minor code rearrangements to reenable warning-free building
1780 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1781 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1783 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1786 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1787 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1788 * improvement: support O_LARGEFILE access to files larger than 2GB on
1789 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1790 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1791 definitions for methods specializing on the passed class itself.
1792 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1793 definitions for methods specializing on the passed class itself, or on
1795 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1796 about itself during the build (e.g. for M-? in Slime), if this flag is
1797 enabled in customize-target-features.lisp. This will increase the core
1798 size by about 5-6mb, though, so it's mostly interesting to SBCL
1800 * new feature: various GENCGC tuning parameters have been experimentally
1801 documented and exported from SB-EXT. See documentation for details.
1802 * fixes and improvements related to Unicode and external formats:
1803 ** the Unicode character database has been upgraded to the
1804 Unicode 5.2 standard, giving names and properties to a number of new
1805 characters, and providing a few extra characters with case
1807 ** improvement: restarts for providing replacement input/output on coding
1808 errors for fd-stream external formats.
1809 ** improvement: where :<encoding> is a keyword corresponding to an
1810 external format the system supports, it is now possible to specify
1811 (:<encoding> :replacement <character>) as an external format which will
1812 automatically substitute <character> on encoding or decoding errors for
1813 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1815 ** improvement: the file streams underlying the standard streams (such as
1816 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1817 which uses the replacement mechanism to handle encoding errors,
1818 preventing various infinite error chains and unrecoverable I/O
1820 ** minor incompatible change: the utf-8 external format now correctly
1821 refuses to encode Lisp characters in the surrogate range (char-codes
1822 between #xd800 and #xdfff).
1823 ** fix a typo preventing conversion of strings into octet vectors
1824 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1826 ** fix a bug in the octet multibyte handling of decoding errors and the
1827 USE-VALUE restart. (launchpad bug lp#314939)
1828 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1829 restart on fd-stream decoding errors.
1830 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1831 error is near the end of file.
1832 ** fix a double-error case in unibyte octet conversions, when the first
1833 use of USE-VALUE is ignored.
1834 ** fix bugs in handling of undefined code points in unibyte encodings.
1835 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1836 streams after an UNREAD-CHAR.
1837 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1838 object is allocated in a boxed region of dynamic space.
1839 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1840 fork with multiple Lisp threads running is made, instead of going
1841 ahead with unpredictable consequences. (reported by Leslie Polzer)
1842 * bug fix: uses of slot accessors on specialized method parameters within
1843 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1844 error while finalizing the class. This fix may cause classes with slot
1845 accessors to be finalized later than previously. (reported by Lars Rune
1846 Nøstdal; launchpad bug lp#473699)
1847 * bug fix: restore buildability on the MIPS platform. (regression from
1848 1.0.30.38, reported by Samium Gromoff)
1849 * bug fix: inspecting closures is less likely to fail with a type error.
1850 * bug fix: no timer starvation when setting the system clock back.
1851 (launchpad bug lp#460283)
1852 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1853 standard pprint dispatch table as specified by CLHS.
1854 * bug fix: give CLISP a hint about a type declaration to enable it to build
1855 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1857 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1858 (reported by Attila Lendvai; launchpad bug lp#310132)
1859 * bug fix: distinguish in type specifiers between arrays that might be
1860 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1861 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1862 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1863 * bug fix: setting the value of a symbol-macro within a method in the
1864 presence of type declarations works properly again. (reported by Iban
1865 Hatchondo; launchpad bug lp#485019)
1867 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1868 * optimization: faster FIND and POSITION on strings of unknown element type
1869 in high SPEED policies. (thanks to Karol Swietlicki)
1870 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1872 * improvement: better error signalling for bogus parameter specializer names
1873 in DEFMETHOD forms (reported by Pluijzer)
1874 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1876 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1878 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1879 removes previous default initargs (reported by Lars Rune Nøstdal and
1881 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1882 lambda-lists. (reported by Peter Seibel)
1883 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1884 correctly when starting from an executable core without saved runtime
1885 options (reported by Faré Rideau, thanks to Zach Beane)
1886 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1887 an optimization note instead. (reported by Martin Cracauer)
1888 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1889 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1890 new process group if it doesn't need to share stdin with the sbcl
1891 process. (thanks to Leslie Polzer)
1892 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1893 (reported by Stanislaw Halik)
1895 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1896 * improvement: stack allocation is should now be possible in all nested
1897 inlining cases: failure to stack allocate when equivalent code is manually
1898 open coded is now considered a bug.
1899 * improvements related to Unicode:
1900 ** the Unicode character database has been upgraded to the
1901 Unicode 5.1 standard, giving names and properties to a number of new
1902 characters, and providing a few extra characters with case
1904 ** the system now recognizes and produces names for Unicode Hangul
1905 syllable characters.
1906 ** the EBCDIC-US external-format is now supported for octet operations
1907 (as well as for stream operations).
1908 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1909 be used to output toplevel compile-time effects into a separate .CFASL
1911 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1912 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1914 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1916 * optimization: division of floating point numbers by constants uses
1917 multiplication by reciprocal when an exact reciprocal exists.
1918 * optimization: multiplication of single- and double-floats floats by
1919 constant two has been optimized.
1920 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1921 sufficient type information is available. (thanks to Leslie Polzer)
1922 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1923 known structure objects are as efficient as defstruct generated accessors.
1924 * optimization: unused vector creation can now be optimized away.
1925 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1926 * improvement: a STYLE-WARNING is signalled when a generic function
1927 clobbers an earlier FTYPE proclamation.
1928 * improvement: the compiler is able to track the effective type of
1929 generic function across method addition and removal even in the
1930 absence of an explicit DEFGENERIC.
1931 * improvement: DESCRIBE now reports on symbols naming undefined
1932 but assumed or declared function as well.
1933 * improvement: recompilation of systems using SB-GROVEL now works
1934 (thanks to Leslie Polzer)
1935 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1936 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1938 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1939 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1940 well as user defined declaration names.
1941 ** VARIABLE-INFORMATION is now aware of alien variables.
1942 * improvement: improved address space layout on OpenBSD (thanks to Josh
1944 * improvement: pretty-printing of various Lisp forms has been improved
1945 (thanks to Tobias Rittweiler)
1946 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1947 unused were deleted in safe code. (reported by John Fremlin)
1948 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1950 * bug fix: some out-of-line array predicates were missing (reported by
1952 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1954 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1955 (thanks to Larry D'Anna)
1956 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1957 as well. (reported by Josh Elsasser)
1958 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1959 leading to possible attempts to delete the same file twice. See docstring
1960 on DELETE-FILE for details. (reported by John Fremlin)
1961 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1962 designator argument, rather than its truename. (reported by Luis
1964 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1965 information about some array types. (thanks to Luis Oliveira)
1966 * bug fix: moderately complex combinations of inline expansions could
1967 be miscompiled if the result was declared to be dynamic extent.
1968 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1969 form (+ <variable> <integer>) were miscompiled under certain
1971 * bug fix: in some cases no compiler note about failure to stack allocate
1972 was emitted, even if the objects were in fact heap allocated.
1973 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1974 allocation could cause objects users might reasonably expect to
1975 be heap allocated to be stack allocated.
1976 * bug fix: DESCRIBE signalled an error for generic functions under
1977 certain circumstances. (thanks to Leslie Polzer)
1978 * bug fix: Fixed spelling of an error message.
1980 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1981 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1982 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1983 of SB-THREAD:THREAD-ERROR-THREAD.
1984 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1985 * new feature: docstrings for local and anonymous functions are no longer
1986 discarded. (thanks to Leslie Polzer)
1987 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1988 values in other threads.
1989 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1990 about object allocation.
1991 * optimization: division of a real float by a complex float is implemented
1992 with a specialised code sequence.
1993 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1994 keywords is an order of magnitude faster.
1995 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1996 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1997 methods, and similarly for non-standard metaclass classes as long as there
1998 are no methods additional on MAKE-INSTANCE.
1999 * optimization: more efficient type-checks for FIXNUMs when the value
2000 is known to be a signed word on x86 and x86-64.
2001 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2002 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2004 * optimization: compiler is smarter about delegating argument type checks to
2006 * optimization: several character functions are now compiled somewhat more
2007 efficiently. (reported by Lynn Quam)
2008 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2009 * improvement: less unsafe constant folding in floating point arithmetic,
2010 especially for mixed complex/real -float operations.
2011 * optimization: constant double and single floats are stored in native
2012 unboxed format on x86[-64].
2013 * optimization: smarter code for arithmetic operations with constant floats,
2014 complex floats, or integers on x86[-64].
2015 * optimization: smarter code for conjugate/multiplication of float complexes
2016 and abs/negate of floats on x86-64.
2017 * optimization: more efficient complex float and real float operations on
2019 * improvement: complex float division is slightly more stable.
2020 * improvement: DESCRIBE output has been reworked to be easier to read and
2021 contains more pertinent information.
2022 * improvement: failure to provide requested stack allocation compiler notes
2023 provided in all cases (requested stack allocation not happening without a
2024 note being issued is now considered a bug.)
2025 * bug fix: SB-POSIX exports the documented types and functions
2026 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2027 types. (reported by "abhi")
2028 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2029 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2030 (thanks to Paul Khuong)
2031 * bug fix: looping around HANDLER-CASE could silently consume stack space
2032 on each iteration. (reported by "foobar")
2033 * bug fix: better error signalling when calls to functions seeking elements
2034 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2035 (reported by Tobias Rittweiler)
2036 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2037 directory components now works as it used to. (various prolems reported by
2038 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2039 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2040 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2041 * bug fix: bogus undefined variable warnings from fopcompiled references to
2042 global variables. (thanks to Lars Rune Nøstdal)
2043 * bug fix: foreign function names should now appear in backtraces on
2044 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2045 * bug fix: SETF compiler macro documentation strings are not discarded
2047 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2048 (thanks to Alex Plotnick)
2049 * bug fix: SLEEP accepts large integer arguments, truncating them to
2050 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2051 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2052 * bug fix: compiler notes for expensive slot type checks could be emitted
2053 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2055 changes in sbcl-1.0.29 relative to 1.0.28:
2056 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2057 https://bugs.launchpad.net/sbcl
2058 Bugs can be reported directly there, or by sending email to
2059 sbcl-bugs@lists.sourceforge.net
2060 (no subscription required.)
2061 * minor incompatible change: under weak type checking policy integer
2062 types are weakened less aggressively.
2063 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2064 allowed to return, which causes SBCL to quit with exit status 0. Previously
2065 if the function returned with a small integer return value, that value
2066 was accidentally reused as the exit status.
2067 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2068 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2069 :HASH-FUNCTION argument. Refer to user manual for details.
2070 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2072 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2073 microseconds since the Unix epoch on all platforms.
2074 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2075 allows the compiler to safely elide boundedness checks for special
2077 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2078 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2079 efficiency measure for threaded platforms, but also valueable in
2081 * new feature: UNC pathnames are now understood by the system on Windows.
2082 * optimization: the compiler uses a specialized version of FILL when the
2083 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2085 * optimization: accesses to potentially non-simple arrays where element type
2086 is known are 50% faster.
2087 * optimization: compiler now generates faster array typechecking code.
2088 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2090 * optimization: multidimensional array accesses in the absence of type
2091 information regarding array rank are approximately 10% faster due to
2092 open coding of ARRAY-RANK.
2093 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2094 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2096 * optimization: result of call to VECTOR can now be stack allocated.
2097 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2098 as long as the resulting array is one-dimensional and has a known
2099 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2100 length of the list matches the known length of the vector does not
2101 allocate the list as an intermediate step. Ditto for VECTOR and simple
2103 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2104 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2105 known element type, and is known to be simple and one dimensional.
2106 * improvement: SBCL now emits a compiler note where stack allocation was
2107 requested but could not be provided (not in all cases, unfortunately)
2108 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2109 * improvement: pretty-printing loop has been implemented properly. (thanks
2110 to Tobias Rittweiler)
2111 * documentation: CLOS slot typechecing policy has been documented.
2112 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2113 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2114 pointer, leading to memory faults. (thanks to Bart Botta)
2115 * bug fix: better floating point exception handling on x86/OpenBSD.
2116 (thanks to Josh Elsasser)
2117 * bug fix: exit status from QUIT when called under --script was lost
2118 (reported by Hubert Kauker)
2119 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2120 same implementation of FILL to initialize the array, even if a more
2121 efficient one was available (reported by Stas Boukarev, thanks to
2123 * bug fix: potential miscompilation of array stack allocation on x86 and
2124 x86-64. (reported by Time Tossavainen)
2125 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2126 result in their subforms being treated as top level forms. (reported by
2128 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2129 than a machine register could leave garbage in the high bits of the
2130 result register (bug 316325).
2131 * bug fix: disable address space randomization Linux/x86-64 as well,
2132 not just x86-64. (reported by Ken Olum)
2133 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2134 generate incorrect code.
2135 * bug fix: #201; type inference for CONS and ARRAY types could derive
2136 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2137 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2138 could not be assigned to or bound with PROGV. (reported by Lorenz
2140 * bug fix: the value of CL:- in the inspector was the previous expression
2141 evaluated rather than the expression being evaluated.
2142 * bug fix: constants can no longer be locally declared special.
2143 * bug fix: signals delivered to threads started from foreign land (read:
2144 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2145 thread by blocking all signals and resignalling.
2146 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2147 from :INITFORM, if any.
2149 changes in sbcl-1.0.28 relative to 1.0.27:
2150 * a number of bugs in cross-compilation have been fixed, with the ultimate
2151 result that building under (at least) clisp should be much more reliable.
2152 * minor incompatible changes: echo-streams now propagate unread-char to the
2153 underlying input stream, and no longer permit unreading more than one
2155 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2156 frames, allowing for instance more reliable backtraces.
2157 * improvement: the debugger REPL can now reference lexical variables
2158 by name directly for code compiled with (DEBUG 3).
2159 * improvement: errors from malformed declarations now have better source
2160 paths associated with them. (thanks to Tobias Rittweiler)
2161 * optimization: faster local calls on x86/x86-64
2162 * bug fix: some error messages for out-of-bound array indexes confused the
2163 index and the bound. (thanks to Stas Boukarev)
2164 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2166 * bug fix: running regressions tests in shells without OSTYPE set now works.
2167 (reported by Harald Hanche-Olsen)
2168 * bug fix: more robust static space exhaustion signalling from
2169 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2170 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2171 docstring away instead of storing it under names such as (LAMBDA (X)).
2172 (reported by Leslie Polzer)
2173 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2174 (thanks to Ole Arndt for the patch)
2175 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2176 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2177 potentially-invalid effective methods in its cache.
2178 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2179 instances as well (thanks to Paul Khuong)
2180 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2181 SB-POSIX:WAITPID and their C equivalents.
2182 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2184 changes in sbcl-1.0.27 relative to 1.0.26:
2185 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2186 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2187 * improvement: the system either recovers from stack exhaustion or dies
2188 properly as opposed to leaving the user uncertain of whether the handler
2189 trampled on some random memory next to the stack or having to rely on
2190 --lose-on-corruption (which is still a good idea to use in production
2191 because stack exhaustion can happen in signal handlers which will likely
2193 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2194 1.0.25.37, reported by Harald Hanche-Olsen)
2195 * bug fix: work around signal delivery bug in darwin (regression from
2196 1.0.25.44, reported by Sidney Markowitz)
2197 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2199 changes in sbcl-1.0.26 relative to 1.0.25:
2200 * incompatible change: an interruption (be it a function passed to
2201 INTERRUPT-THREAD or a timer function) runs in an environment where
2202 interrupts can be enabled. The interruption can use
2203 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2204 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2205 potentially running out of stack. Keep in mind that in the absence
2206 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2207 acquiring a lock can enable interrupts.
2208 * incompatible change: GC-OFF and GC-ON are removed, as they were
2209 always unsafe. Use WITHOUT-GCING instead.
2210 * new feature: runtime option --disable-ldb
2211 * new feature: runtime option --lose-on-corruption to die at the
2212 slightest hint of possibly non-recoverable errors: running out of
2213 memory, stack, alien stack, binding stack, encountering a memory
2214 fault, etc. In the absence of --lose-on-corruption a warning is
2216 * enhancement: detect binding stack exhaustion
2217 * enhancement: detect alien stack exhaustion on x86/x86-64
2218 * improvement: generally more stable and reliable interrupt handling
2219 * improvement: there is a per thread interruption queue,
2220 interruptions are executed in order of arrival
2221 * improvement: a repeating timer reschedules itself when the it has
2222 finished, but expiration times are spaced equally. If an
2223 expiration time is in the past it will trigger after a short grace
2224 period that may give a chance to other things to run.
2225 * optimization: slightly faster gc on multithreaded builds
2226 * optimization: faster WITHOUT-GCING
2227 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2228 important locks so that the debugger/handler doesn't produce
2229 recursive errors or deadlock.
2230 * bug fix: real-time signals are not used anymore, so no more
2231 hanging when the system wide real-time signal queue gets full.
2232 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2234 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2235 * bug fix: fix random memory faults related to interrupts on alpha
2236 * bug fix: fix random memory faults related to interrupts on sparc
2237 * bug fix: fix deadlocks related to starting threads
2238 * bug fix: fix deadlines on locks on futex platforms
2239 * bug fix: restore errno in signal handlers
2240 * bug fix: fix deadlocks related to hash tables
2241 * bug fix: fix deadlocks in pcl
2243 changes in sbcl-1.0.25 relative to 1.0.24:
2244 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2245 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2246 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2247 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2248 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2249 better name and does not return values so stale on multiprocessor systems.
2250 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2252 * improvement: unithread builds keep track of MUTEX-VALUE.
2253 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2254 stream anymore making it thread safe to have a concurrent reader and
2255 a writer, for instance, in a pipe.
2256 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2257 arguments, making compiler-macros for SETF-functions able to inspect
2258 their constant arguments.
2259 * improvement: COMPILE-FILE reports times with millisecond accuracy
2260 (thanks to Luis Oliveira)
2261 * optimization: CHAR-CODE type derivation has been improved, making
2262 TYPEP elimination on subtypes of CHARACTER work better. (reported
2263 by Tobias Rittweiler, patch by Paul Khuong)
2264 * bug fix: setting alien structure fields of type struct by value now
2265 computes the right offset for the memory copy.
2266 * bug fix: compilation problem involving inlined calls to aliens with
2267 result type VOID. (reported by Ken Olum)
2268 * bug fix: #235a; sequential inline expasion in different policies no
2269 longer reuses the functional from the previous expansion site.
2270 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2271 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2272 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2273 cause an implied type redefinition. Regression from 1.0.21.29.
2274 * bug fix: sign-extension of small signed return values now works with C
2275 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2276 * improvements to the Windows port:
2277 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2278 Westfold, thanks to Rudi Schlatte)
2280 changes in sbcl-1.0.24 relative to 1.0.23:
2281 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2282 vector of a multidimensional SIMPLE-ARRAY.
2283 * new feature: the system now signals a continuable error if standard
2284 readtable modification is attempted. (thanks to Tobias Rittweiler)
2285 * new feature: DIRECTORY has been extended with a non-standard keyword
2286 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2287 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2288 has been robustified and documented better. (thanks to Robert Goldman)
2289 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2290 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2291 * tradeoff: constant FORMAT control strings are now compiled unless
2292 SPACE > SPEED (previously only when SPEED > SPACE.)
2293 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2295 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2297 * bug fix: lexical type declarations are now correctly reported by
2298 SB-CLTL2. (reported by Larry D'Anna)
2299 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2300 using UTF-8 as external format. (thanks to Luis Oliveira)
2301 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2302 are signalled correctly. (thanks to Stas Boukarev)
2303 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2304 designator. (thanks to Tobias Rittweiler)
2305 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2306 designator, and returns T instead of the function. (thanks to
2308 * bug fix: direct superclasses of STANDARD-CLASS and
2309 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2310 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2311 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2312 when no class with the named slot yet exists no longer causes a
2313 compile-time style-warning.
2314 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2315 in safe code. (reported by Didier Verna)
2316 * bug fix: #430; nested structure constructors can stack allocate.
2317 * bug fix: on some 64-bit platforms dynamic space size was truncated
2318 to #xffff0000 bytes. (reported by Benjamin Lambert)
2319 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2320 REPL unusable. (reported by Daniel Herring)
2321 * bug fix: return values of READ-SEQUENCE did not take :START into
2322 account on file streams, regressions since 1.0.12.22. (reported by
2323 Thomas Russ, patch by Paul Khuong)
2324 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2325 method specializer used to confuse permuation vector optimization.
2326 * bug fix: system inserted bogus implicit type declarations for local
2327 special variables in DEFMETHOD bodies.
2328 * bug fix: #354; duplicated frames in backtraces due to
2329 non-tail-call-optimized XEPs to functions with return type NIL
2331 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2332 initializes structure object slots according to DEFSTRUCT initforms,
2333 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2334 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2335 (reported by Bruno Haible and Stephen Wilson)
2336 * bug fix: #395; fill-pointer output streams used now support
2337 element-type BASE-CHAR as well.
2338 * bug fix: compiler error when attempting to derive return value of
2339 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2341 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2343 * bug fix: Mac OS X binaries should now be portable between Leopard
2346 changes in sbcl-1.0.23 relative to 1.0.22:
2347 * enhancement: when disassembling method functions, disassembly
2348 for the associated fast function is also produced.
2349 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2351 * optimization: printing with *PRINT-PRETTY* true is now more
2352 efficient as long as the object being printed doesn't require
2353 special handling by the pretty printer.
2354 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2355 now interact correctly with type declarations.
2356 * partial bug fix: PCL detects infinite recursion during wrapper
2357 validation. (thanks to Attila Lendvai)
2358 * bug fix: #426; nested function calls are inlined properly.
2359 Previously if FOO was an inline function, in calls of the form
2360 (FOO (FOO ...)) the outer call was not inlined.
2361 * bug fix: long long arguments passed in registers to alien
2362 functions on PowerPC Linux and NetBSD are now handled correctly
2363 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2365 changes in sbcl-1.0.22 relative to 1.0.21:
2366 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2367 for the shared object in the current directory, but passes the native
2368 namestring of the designated pathname to the operation system's shared
2369 object loading function as-it.
2370 * minor incompatible change: --disable-debugger toplevel option now takes
2371 effect before processing of initialization files and --eval or --load
2373 * new feature: new commandline argument: --script, which supports
2374 shebang lines. See documentation for details. (based on work by
2376 * new feature: SAVE-LISP-AND-DIE can save current values of
2377 --dynamic-space-size and --control-stack-size in the executable core,
2378 causing it to skip normal runtime option processing. See documentation
2379 for details. (thanks to Zach Beane)
2380 * enhancement: inoccous calls to EVAL or generic functions dispatching
2381 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2382 * enhancement: the system no longer resignals errors from --load and
2383 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2384 associated with the original error to be lost. (thanks to Ariel
2386 * enhancement: :DONT-SAVE keyword argument has been added to
2387 LOAD-SHARED-OBJECT for controlling interaction with
2388 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2389 the effects of an earlier LOAD-SHARED-OBJECT call.
2390 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2391 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2392 provided. (reported by Cedric St-Jean)
2393 * bug fix: circularity handling in the reader did not treat raw
2394 structure slots correctly. (reported by Cedric St-Jean)
2395 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2396 file descriptors when there were none.
2397 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2398 was broken. (reporteed by Willem Broekema)
2399 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2400 pathnames without a directory.
2401 * bug fix: COMPILE-FILE did not warn about undefined variable
2402 references at toplevel, and LOAD of the resulting fasl did
2403 not signal an error.
2404 * bug fix: functions with non-required arguments used to end up with
2405 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2406 * bug fix: redefining a function with non-required arguments didn't
2407 update the system's knowledge about its call signature properly.
2408 * bug fix: fixed #431; incompatible alien record type redefinitions
2409 are detected and handled. (reported by Neil Haven)
2410 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2411 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2413 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2414 after alien stack frames.
2415 * bug fix: strings passed to mk{s,d}temp lacked null termination
2417 changes in sbcl-1.0.21 relative to 1.0.20:
2418 * new feature: the compiler is able to track the effective type of a
2419 generic function across method addition and removal.
2420 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2421 appropriately typed structure slots without locking.
2422 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2423 information like those gathered by TIME using a programming-friendly
2425 * new feature: TIME reports time taken even if the form performs a
2426 non-local transfer of control.
2427 * enhancement: reduced conservativism on GENCGC platforms: on
2428 average 45% less pages pinned (measured from SBCL self build).
2429 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2430 mutate constant symbols or violate declaimed type of the symbol.
2431 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2432 sleeping on the semaphore in heavily contested semaphores.
2433 * bug fix: semaphores and condition variables were not interrupt
2435 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2436 owned by other threads anymore.
2437 * bug fix: FIND on lists called KEY outside the specified
2438 subsequence. (reported by budden)
2439 * bug fix: LOG doesn't use single-float intermediate results when
2440 given mixed integer and double-float arguments, leading to better
2441 precision. (reported by Bob Felts)
2442 * bug fix: LOG with base zero returned values of inconsistent type.
2444 changes in sbcl-1.0.20 relative to 1.0.19:
2445 * minor incompatible change: OPTIMIZE qualities
2446 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2447 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2448 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2449 * documentation: some slot access efficiency guidelines have been
2450 added to the user manual.
2451 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2452 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2453 as ASSOC and MEMEBER.
2454 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2455 to more efficient EQ-comparison versions more often.
2456 * optimization: enhanced derivation of DOLIST iteration variable type
2458 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2460 * optimization: runtime lookup of function definitions can be
2461 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2462 * optimization: compiler is able to derive the return type of
2463 (AREF (THE STRING X) Y) as being CHARACTER.
2464 * optimization: CLRHASH on empty hash-tables no longer does pointless
2465 work. (thanks to Alec Berryman)
2466 * optimization: REPLACE deftransforms don't punt when :START1 or
2468 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2469 no longer emits a code deletion note. (reported by Andrew
2471 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2472 functions with an odd number of &OPTIONAL arguments, a &REST
2473 argument, and one or more &KEY arguments at the call site.
2474 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2475 arguments appeared at call sites as well.
2476 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2477 READ-LINE &co can no longer read from them afterwards. (reported
2479 * bug fix: fixed #427: unused local aliens no longer cause compiler
2480 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2482 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2483 alien-stack leakage. (reported by Andy Hefner)
2484 * bug fix: PROGV signals an error when an attempt to violate declared
2485 type of a variable or bind a constant is made.
2486 * bug fix: SET signals an error when an attempt to violate declared
2487 type of a variable is made.
2488 * bug fix: restart computation during the execution of a restart
2489 test function no longer causes infinite recursion. (reported by
2491 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2492 signals an error. (thanks to Pierre Mai)
2493 * bug fix: EXPORT left symbol unexported in conflict situations.
2494 (thanks to Michael Weber)
2495 * bug fix: correctly handle name conflicts involving CL:NIL.
2496 (thanks to Michael Weber)
2497 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2498 conflicts arising from USEing package with conflicting symbols
2499 correctly. (thanks to Michael Weber)
2501 changes in sbcl-1.0.19 relative to 1.0.18:
2502 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2503 warnings that go otherwise unhandled will be muffled if they are
2504 of the type that's the value of this variable.
2505 * optimization: stack allocation is slightly more efficient on x86
2507 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2508 where a raw slot always is initialized using the initform whose
2509 type is not know sufficiently well a compile-time are now compiled
2510 correctly. (reported by John Morrison)
2511 * bug fix: compiler no longer makes erronous assumptions in the
2512 presence of non-foldable SATISFIES types.
2513 * bug fix: stack analysis missed cleanups of dynamic-extent
2514 arguments in non-let-converted calls to local functions.
2515 * improvements to the Windows port:
2516 ** adjusted address spaces for building on both Win32 and
2517 Win64. (thanks for John Connors)
2518 * fixed some bugs revealed by Paul Dietz' test suite:
2519 ** interval arithmetic during type derivation used inexact integer
2520 to single-float coercions.
2521 ** arithmetic operations involving large integers and single
2522 floats give the same results in compiled and interpreted code.
2523 ** deriving the result type of COERCE no longer signals an error
2524 if the derived type of the second argument is a MEMBER type
2525 containing invalid type specifiers.
2526 ** ADJOIN with constant NIL as second argument works correctly.
2527 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2529 changes in sbcl-1.0.18 relative to 1.0.17:
2530 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2531 profiles only the current thread.
2532 * minor incompatible change: changes to SYMBOL-VALUE of constants
2533 defined with DEFCONSTANT now signal an error.
2534 * enhancement: SB-SPROF now has support for wallclock profiling,
2535 and is also able to profile specific threads. REPORT output
2536 has also additional sorting options.
2537 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2539 * optimization: structure allocation has been improved
2540 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2541 ** out of line constructors are ~10% faster.
2542 ** inline constructors are ~15% faster.
2543 ** inline constructors are capable of dynamic extent allocation
2544 (generally on x86 and x86-64, in some cases on other platforms
2546 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2548 * optimization: file compiler is now able to coalesce non-circular
2549 lists, non-base strings, and bit-vectors. Additionally, constants
2550 are never referenced through SYMBOL-VALUE at runtime.
2551 * optimization: code defining methods on PRINT-OBJECT (and other
2552 generic functions in the COMMON-LISP package) now loads faster.
2553 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2555 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2556 fasl is now deleted. (reported by Attila Lendvai)
2557 * bug fix: READ-LINE always returned NIL for the last line in files.
2558 (reported by Yoshinori Tahara)
2559 * bug fix: more accurate disassembly annotations of foreign function
2560 calls. (thanks to Andy Hefner)
2561 * bug fix: trimming non-simple strings and non-string string
2562 designators when the there is nothing to trim works properly.
2563 (thanks to James Knight)
2564 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2565 (thanks to Travis Cross)
2566 * fixed some bugs revealed by Paul Dietz' test suite:
2567 ** NIL is a valid function name (regression at 1.0.13.38)
2568 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2569 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2570 fill pointers properly (regression at 1.0.12.23)
2571 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2572 displacement indices properly (regression at 1.0.12.23)
2574 changes in sbcl-1.0.17 relative to 1.0.16:
2575 * temporary regression: user code can no longer allocate closure
2576 variable storage on stack, due to bug 419 without explicitly
2577 requesting it. Please consult sbcl-devel for advice if you need to
2578 use this feature in the meanwhile.
2579 * new feature: runtime argument --control-stack-size can be used to
2580 adjust thread default control stack size.
2581 * enhancement: improved TIME output
2582 ** all times are reported using the measured accuracy (milliseconds
2583 for real and GC times, microseconds for everything else.)
2584 ** processor cycle counts on x86 and x86-64.
2585 ** interpreted forms are counted for both evaluator modes.
2586 ** number of lambdas converted by the compiler is reported.
2587 ** CPU percentage report (computed from real and total run time.)
2588 ** more comprehensive run time reporting, using a condenced format
2589 ** interperted form, lambda, and page fault counts are omitted
2591 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2593 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2594 * optimization: two argument forms of LAST are upto ~10% faster
2595 in normal SPEED policies.
2596 * optimization: NCONC no longer needs to heap cons its &REST list
2597 in normal SPEED policies.
2598 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2599 to Sidney Markowitz)
2600 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2601 regression since 1.0.9.1. (thanks to Eric Marsden)
2602 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2603 since 1.0.15.36. (thanks to Paul Khuong)
2604 * bug fix: LAST when always returned the whole list when given a bignum
2605 as the second argument.
2606 * bug fix: dynamic extent allocation of nested lists and vectors
2607 could leak to otherwise accessible parts.
2608 * bug fix: invalid optimization of heap-allocated alien variable
2610 * bug fix: fasl header checking is less vulnerable to different
2611 platform word lengths.
2612 * bug fix: more correct assembler syntax for GNU binutils
2613 2.18.50.0.4 support. (thanks to Marijn Schouten)
2614 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2616 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2617 declarations) successfully. (reported by Attila Lendvai)
2619 changes in sbcl-1.0.16 relative to 1.0.15:
2620 * minor incompatible change: revert the changes to sb-posix's error
2621 signaling added in 1.0.14.
2622 * minor incompatible change: change PROBE-FILE back to returning
2623 NIL whenever we can't get a truename, as was the case before 1.0.14.
2624 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2625 inherits from ERROR instead of just CONDITION.
2626 * new feature: SB-INTROSPECT can provide source locations for instances
2627 as well. (thanks to Tobias Rittweiler)
2628 * optimization: binding special variables now generates smaller code
2629 on threaded platforms.
2630 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2631 and cases where no :TEST is given but the compiler can infer that
2632 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2633 * optimization: better LOGNOT on fixnums.
2634 * optimization: modular arithmetic for a particular requested width
2635 is implemented using a tagged representation unless a better
2636 representation is available.
2637 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2638 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2639 for wellformedness and returns a specialized vector. (reported by
2640 Francois-Rene Rideau)
2641 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2642 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2643 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2644 unscheduling timer at the same time as another timer fires.
2645 * bug fix: don't reschedule timers for dead threads.
2646 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2647 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2648 bogus errors if select() was interrupted.
2649 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2651 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2652 * enhancement: cleaner backtraces for interactive interrupts, as
2653 well as other cases where the interesting frames used to be
2654 obscured by interrupt handling frames.
2655 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2656 now supported, and tracing a whole package using (TRACE "FOO") now
2657 traces SETF-functions as well.
2658 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2659 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2660 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2661 * unreadably printed representation of hash-tables now includes
2663 * bug fix: partially fixed #188: type propagation from assignments
2664 is now more efficient.
2665 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2666 'DOUBLE-FLOAT) are not flushable.
2667 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2668 full address of the object, and none of the tag bits.
2669 * bug fix: readably printing hash-tables now respects other printer
2670 control variables. (reported by Cedric St-Jean)
2671 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2672 keyword with MAKE-HASH-TABLE.
2673 * bug fix: export SB-POSIX:MKSTEMP.
2674 * bug fix: SORT was not interrupt safe.
2675 * bug fix: XREF accounts for the last node of each basic-block as
2677 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2678 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2679 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2680 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2681 create obsolete instances in the case of redefinition or
2682 obsoletion of a superclass. (thanks to Andy Hefner)
2683 * bug fix: Support for the Alpha architecture has been revived; it had
2684 suffered somewhat from lack of maintenance since sbcl-1.0.
2685 * improvements to the Windows port:
2686 ** The system detects the codepage to use at startup, instead of
2687 using the value from the saved core. (thanks to Kei Suzuki)
2689 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2690 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2691 (see documentation for details.)
2692 * revived support for OpenBSD (contributed by Josh Elsasser)
2693 * partially fixed bug #108: ROOM no longer suffers from occasional
2694 (AVER (SAP= CURRENT END)) failures.
2695 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2696 bodies no longer cause a WARNING to be signalled. (reported by
2698 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2699 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2700 the bug in TRUNCATE.) (reported by Michael Weber)
2701 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2702 no samples. (reported by Andy Hefner)
2703 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2704 no longer appear as (NIL ...) frames in backtraces.
2705 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2706 is now actually exported from SB-EXT as documented. (reported by
2708 * bug fix: sb-aclrepl now correctly understands how to inspect
2709 single-floats on 64-bit platforms where single-floats are not boxed.
2710 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2711 yet been finalized. (reported by Levente Meszaros)
2712 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2713 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2714 SBCL-specific optimize qualities.
2716 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2717 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2718 an executable in the search path, and does so in the child
2719 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2720 been removed; it can be found in the CVS history, for somebody who
2721 needs that search behavior (see the manual).
2722 * minor incompatible change: compiler policy re. weakening type
2723 checks has changed: now type checks are weakened only if SAFETY < 2
2725 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2726 unparsing of directory pathnames as files. Analogously,
2727 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2728 filename to parse into a directory pathname.
2729 * enhancement: implicit generic function creation now signals a
2730 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2731 users can bind handlers for and muffle around calls to LOAD.
2732 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2733 to be used (using the default stream external format), and allows
2734 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2735 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2736 strings and vectors whose element-type or simplicity is not fully
2737 known at compile-time.
2738 * optimization: STRING-TRIM and related functions no longer allocate
2739 a new string when no trimming needs to be performed. These functions
2740 are also faster than before when the input string has been declared
2742 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2743 * optimization: READ-LINE is significantly faster for files containing
2745 * optimization: non-open coded uses of character comparison operators
2746 (e.g. char=) no longer cons when called with more than one parameter
2747 on platforms supporting dynamic-extent allocation.
2748 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2749 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2750 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2752 * bug fix: some sequence functions elided bounds checking when
2754 * bug fix: too liberal weakening of union-type checks when SPEED >
2756 * bug fix: more bogus fixnum declarations in ROOM implementation
2759 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2760 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2761 :SYNCHRONIZED argument, which makes the hash-table safe for
2762 concurrent accesses (but not iteration.) See also:
2763 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2764 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2765 * optimization: CONCATENATE on strings is an order of magnitude faster
2766 in code compiled with (> SPEED SPACE).
2767 * optimization: SUBSEQ is ~50% faster on lists.
2768 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2769 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2770 END is smaller then START.
2771 * bug fix: SB-PROFILE will no longer report extra consing for nested
2772 calls to profiled functions.
2773 * bug fix: ROOM implementation had bogus fixnum declarations which
2774 could cause type-errors when calling ROOM on large images.
2775 * bug fix: if file compilation is aborted, the partial fasl is now
2776 deleted, and COMPILE-FILE returns NIL as the primary value.
2777 * bug fix: number of thread safety issues relating to SBCL's internal
2778 hash-table usage have been fixed.
2779 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2780 be returned from its body when the values were being returned
2781 using unknown-values return convection and the W-P-O was wrapped
2782 inside an UNWIND-PROTECT.
2783 * bug fix: sb-posix should now compile again under Windows, enabling
2784 slime to work again.
2786 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2787 * incompatible change: hash-table accessor functions are no longer
2788 automatically protected by locks. Concurrent accesses on the same hash-table
2789 from multiple threads can give inconsistent results or even corrupt the
2790 hash-table completely. Multi-threaded applications should do their own
2791 locking at the correct granularity. In the current implementation it is
2792 still safe to have multiple readers access the same table, but it's not
2793 guaranteed that this property will be maintained in future releases.
2794 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2795 and will signal an error at runtime.
2796 * enhancement: SB-THREAD package now exports a semaphore interface.
2797 * enhancement: CONS can now stack-allocate on x86 and
2798 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2800 * enhancement: nested lists can now be stack allocated on
2801 platforms providing stack allocation support.
2802 * enhancement: dynamic-extent support has been extended to support
2803 cases where there are multiple possible sources for the stack
2805 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2806 if the mutex is uncontested on Linux.
2807 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2808 as specified by the CLHS. (thanks to Tobias Rittweiler)
2809 * bug fix: NaN comparison now works on x86-64.
2810 * bug fix: CLOSE :ABORT T on a stream with pending output now
2812 * bug fix: instances of non-standard metaclasses using standard
2813 instance structure protocol sometimes missed the slot type checks
2815 * bug fix: known functions can be inlined in high-debug code.
2817 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2818 * minor incompatible change: the MSI installer on Windows no longer
2819 associates .lisp and .fasl files with the installed SBCL.
2820 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2821 on Windows. (thanks to Luis Oliviera)
2822 * new feature: SB-CLTL2 contrib module now implements
2823 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2824 * optimization: scavenging weak pointers is now more efficient,
2825 requiring O(1) instead of O(N) per weak pointer to identify
2826 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2827 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2828 method bodies using constant slot-names when the first argument is
2829 a specializer parameter for the method.
2830 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2831 names, when the class of the instance is a direct instance
2832 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2833 as slow as the constant slot-name case.)
2834 * optimization: member type construction is now O(N) instead
2836 * optimization: UNION and NUNION are now O(N+M) for large
2837 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2839 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2840 now more readable in environments like Slime which display it.
2841 (thanks to Tobias C. Rittweiler)
2842 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2843 was able to infer the correct argument type for the object on which
2844 the CAS operation was being performed.
2845 * bug fix: copy propagation interfered with parallel assignment
2846 semantics in local calls. (reported by Paul Khuong)
2847 * bug fix: the signed modular fixnum shift compiled to wrong code on
2848 x86 and x86-64. (spotted by a slight modification to some of
2851 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2852 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2853 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2854 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2856 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2857 and generic function now print the object identity for anonymous
2858 instances. (thanks to Attila Lendvai)
2859 * enhancement: as an extension to MOP, SBCL now supports SETF of
2860 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2861 (thanks to Attila Lendvai)
2862 * enhancement: sb-cover has an alternate annotation mode which puts
2863 the form annotations at the car of the form, instead of annotating
2864 it completely. The benefit of this mode is that it shows better
2865 which forms were instrumented by the compiler.
2866 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2867 by printer control variables. (reported by Dan Corkill)
2868 * bug fix: system leaked memory when delayed output was performed by
2869 the OS in smaller chunks then expected. (thanks to David Smith)
2870 * bug fix: system leaked memory when file streams were not closed
2872 * bug fix: large objects written to slow streams that were modified
2873 after the write could end up with the modified state written to
2874 the underlying file descriptor.
2875 * bug fix: multiple threads operating in parallel on the same stream
2876 could cause buffer-overflows.
2877 * bug fix: source location information is stored correctly
2878 (broken since 1.0.6). This bug would generally show up as the
2879 Slime debugger highlighting the wrong form when the sldb-show-source
2881 * bug fix: Branch forms are again annotated as branches in the sb-cover
2883 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2884 on x86-64. (reported by Gregory Vanuxem)
2885 * bug fix: EQUALP could return wrong results for structures with raw
2886 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2887 word). (reported by Vjacheslav Fyodorov)
2888 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2891 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2892 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2893 atomic compare-and-swap operations on threaded platforms.
2894 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2895 allows assigning a global minimum value to optimization qualities
2896 (overriding proclamations and declarations).
2897 * enhancement: closed over variables can be stack-allocated on x86
2899 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2901 * optimization: slot definition lookup is now O(1). This speeds up
2902 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2903 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2904 * optimization: ASSOC and MEMBER can now be open-coded for all
2905 combinations of keyword arguments when second argument is constant
2906 and SPEED >= SPACE. In other cases a specialized version is
2908 * bug fix: using obsoleted structure instances with TYPEP and
2909 generic functions now signals a sensible error.
2910 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2911 (reported by Kristoffer Kvello)
2912 * bug fix: backtrace construction is now more careful when making
2913 lisp-objects from pointers on the stack, to avoid creating bogus
2914 objects that can be seen by the GC.
2915 * bug fix: defaulting of values in contexts expecting more than 7
2916 variables now works on x86-64. (reported by Christopher Laux)
2917 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2919 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2920 as the property-list of a symbol.
2921 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2922 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2923 situations requested, are once again file-compileable. (reported
2926 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2927 * MOP improvement: support for user-defined subclasses of
2928 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2929 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2930 the expansion of DEFMETHOD, is responsible for generating a form
2931 which creates a list of specializers when evaluated. Additional
2932 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2933 debugging and introspective support.
2934 * minor incompatible change: the (unsupported) spinlock interface
2935 has changed: free spinlock now has the value NIL, and a held spinlock
2936 has the owning thread as its value.
2937 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2938 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2940 * enhancement: name of a socket-stream is now "a socket" instead of
2941 "a constant string".
2942 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2943 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2944 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2945 for generic functions. (Thanks to Tobias C. Rittweiler)
2946 * optimization: bignum printing speed has been improved by 20-40%
2947 (depending on the bignum size.)
2948 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2950 * bug fix: the cache used by the CLOS to store precomputed effective
2951 methods, slot offsets, and constant return values is now thread and
2953 * bug fix: generic function dispatch function updating is now thread
2954 and interrupt safe (in the sense that the known issues have been
2956 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2957 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2958 * bug fix: asdf systems with dependencies to the SB-POSIX or
2959 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2960 * bug fix: interrupt safety of applicable method computation has been
2963 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2964 * new contrib: sb-cover, an experimental code coverage tool, is included
2965 as a contrib module.
2966 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2967 significantly faster.
2968 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2969 produce more efficient code on x86-64 if the compiler can determine
2970 that (+ INDEX <constant>) does not require a bounds check and FOO
2971 has an element type at least 8 bits wide.
2972 * enhancement: a new, experimental synchronous timeout facility is
2973 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2974 * enhancement: when a symbol name conflict error arises, the
2975 conflicting symbols are always printed with a package prefix.
2976 (thanks to Kevin Reid)
2977 * enhancement: stepping is now once again supported on the SPARC and
2978 MIPS platforms. (It is also now more likely to work on CheneyGC
2980 * enhancement: sb-sprof can now also track and report accurate call
2982 * bug fixes: the treatment of non-standard subclasses of
2983 SB-MOP:SPECIALIZER is more correct.
2984 * incompatible change: PURIFY no longer copies the data from the
2985 dynamic space into the static and read-only spaces on platforms
2986 that use the generational garbage collector
2987 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2989 * bug fix: GC race condition occasionally resulting in crashes with
2990 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2992 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2994 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2995 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2996 * bug fix: an asynchronous interrupt could previously leave the
2997 system running with GC inhibited.
2998 * bug fix: a DECLARE form evaluated at top-level now causes an error
2999 rather than silently (or verbosely) returning NIL.
3000 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3001 result in a error being signalled due to source form lookup errors.
3002 (reported by Peter Graves)
3004 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3005 * incompatible change: removed writer methods for host-ent-name,
3006 host-ent-addresses -- changing the values did not update the DNS
3008 * minor incompatible change: changed experimental JOIN-THREAD interface
3009 * documentation: the manual now lists reader and writer methods
3010 in class slot documentation sections. (thanks to Richard M Kreuter)
3011 * documentation: unwinding from asyncronous events has been
3012 documented as unsafe.
3013 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3014 in multithreaded application code.
3015 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3016 platforms. (thanks to James Anderson for the optimization hint)
3017 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3019 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3020 variants no longer cons.
3021 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3022 their NOT- variants no longer cons.
3023 * optimization: EQUAL hash tables no longer use SXHASH for objects
3024 of all data types, but instead use an EQL hash for types for which
3025 EQUAL is the same as EQL.
3026 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3027 are significantly faster.
3028 * optimization: new STRING-OUTPUT-STREAM implementation is much
3029 faster for large outputs and conses 30% less on average.
3030 * enhancement: XREF information is now collected for references made
3031 to global variables using SYMBOL-VALUE and a constant argument.
3032 * enhancement: SIGINT now causes a specific condition
3033 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3034 * bug fix: FILE-POSITION used to signal an error in some cases where
3035 ANSI requires it to return NIL.
3036 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3037 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3038 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3040 * bug fix: bad type declaration in the CLOS implementation has
3041 been fixed. (reported by James Anderson)
3042 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3043 (thanks to Lutz Euler)
3044 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3045 required by the CLHS. (reported by Samium Gromoff)
3046 * bug fix: dead unbound variable references now signal an error.
3047 (reported by Marco Monteiro)
3048 * bug fix: / with an unused value was being deleted in safe code.
3049 (thanks to Marco Monteiro and Kevin Reid)
3050 * bug fix: number of characters that can be written onto a single
3051 line in a file is unlimited.
3052 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3053 been fixed by inhibiting interrupts for when GC is disabled.
3054 * bug fix: some interrupt safety issues with GETHASH, (SETF
3055 GETHASH), CLRHASH and REMHASH have been fixed.
3056 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3057 specifier no longer causes infinite recursion.
3058 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3059 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3060 * bug fix: an &environment argument with the correct variable information
3061 is passed to macros that are expanded during byte compilation.
3062 (reported by Samium Gromoff)
3063 * bug fix: a logic error was causing the hash function for bignums to
3064 have excessive amounts of collisions. (reported by Faré Rideau)
3065 * bug fix: modifying the contents of an array could change the return
3066 value of SXHASH on that array, which is only allowed for strings
3067 and bit vectors. (bug introduced in 0.9.16)
3068 * improvement: the x86-64/darwin port now passes all tests (except
3069 for the debugger tests) but should still be considered
3070 experimental until this is fixed.
3071 * improvement: a style-warning is signaled for CASE (etc) clauses with
3072 duplicate keys. (thanks to Kevin Reid)
3073 * improvement: macos/x86 and macos/x86-64 now use mach exception
3074 handlers for dealing with illegal instructions (for trapping and
3075 error handling) and memory protection violations (for GC).
3077 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3078 * new platform: experimental support for x86-64/darwin (MacOS).
3079 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3080 and getnameinfo sockets functions are used instead of gethostbyaddr
3081 and gethostbyname, on platforms where the newer functions are available.
3082 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3084 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3085 don't print the startup banner, but behave as if --noinform was passed
3086 as a command line argument. (thanks to Kevin Reid)
3087 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3088 * optimization: code using alien values with undeclared types is much faster.
3089 * optimization: the compiler is now able to open code SEARCH in more cases.
3090 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3091 * bug fix: using standardized COMMON-LISP special variables as loop
3092 variables no longer signals bogus package lock violations. (reported
3094 * bug fix: declaring local loop variables to be of a range-limited type
3095 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3096 (reported by Andras Simon)
3097 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3098 bugs remain on x86-64.)
3099 * bug fix: the #= and ## reader macros now interact reasonably with
3100 funcallable instances.
3101 * bug fix: type-checks for function arguments were compiled using the
3102 compiler policy settings of the wrong lexical environment (in 1.0.2
3104 * bug fix: SHADOW accepts characters as string designators, as required
3105 by the spec (thanks to Eric Marsden)
3106 * bug fix: fixed GC safety issues when foreign functions are called with
3107 non-base strings as arguments
3108 * bug fix: more consistent error output for fatal-compiler-warnings, like
3110 * bug fix: functions with proper names were showing up as NIL in
3111 backtraces (reported by Edi Weitz, regression in 1.0.2)
3113 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3114 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3115 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3116 produce more efficient code on the x86 if the compiler can determine
3117 that (+ INDEX <constant>) does not require a bounds check and FOO
3118 has an element type at least 8 bits wide.
3119 * bug fix: references to undefined variables are handled the same way
3120 in toplevel forms as in the normal compiler
3121 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3123 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3124 (thanks to Jon Buller)
3125 * improvement: faster compilation times for complex functions
3126 * improvement: added readlink support to SB-POSIX (thanks to Richard
3129 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3130 * improvement: experimental support for mach exception handling on
3131 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3133 * improvement: support for GBK external format.
3134 (thanks to Chun Tian (binghe))
3135 * improvement: the debugger now displays variables that have been closed
3136 over, in code compiled with (DEBUG 2) or higher
3137 * improvement: support for executable cores on NetBSD (thanks to
3139 * new feature: added a RESTART-FRAME debugger command
3140 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3141 be used to provide an implementation for FILE-POSITION on Gray streams
3142 (thanks to Eric Marsden)
3143 * new feature: add syslog, openlog and closelog support to SB-POSIX
3144 (thanks to Richard Kreuter)
3145 * optimization: the function call overhead in code compiled with
3146 a high DEBUG optimization setting is significantly
3147 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3148 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3149 (thanks to Tony Martinez)
3150 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3151 evaluated once (reported by Kevin Reid)
3152 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3153 works again (thanks to Kilian Sprotte)
3154 * bug fix: an error is signaled for tagbodies with duplicate tags
3155 (thanks to Stephen Wilson)
3156 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3157 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3158 stack frames from alien callbacks.
3159 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3160 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3161 65k pages (thanks to David Woodhouse)
3162 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3164 changes in sbcl-1.0.1 relative to sbcl-1.0:
3165 * new platform: FreeBSD/x86-64, including support for threading.
3166 * new feature: the compiler stores cross-referencing information
3167 about function calls (who-calls), macroexpansion (who-macroexpands)
3168 and special variables (who-binds, who-sets, who-references) for code
3169 compiled with (< SPACE 3). This information is available through the
3170 sb-introspect contrib.
3171 * new feature: users may subclass SEQUENCE, and have instances of
3172 these classes interoperate with standard Common Lisp functions if
3173 a number of methods are defined. (This feature is experimental
3174 and the interface subject to change based on feedback from SBCL
3175 users and the general community)
3176 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3177 x86/x86-64, rather than the previous fixed depth of 8
3178 * improvement: another pthread back-end of mutex "pthread-futex".
3179 * bug fix: non-ascii command-line arguments are processed correctly
3180 (thanks to Yaroslav Kavenchuk)
3181 * bug fix: non-required arguments were not passed correctly when a method
3182 defined using DEFMETHOD was called from a mop-generated method using
3183 CALL-NEXT-METHOD (reported by Pascal Costanza)
3184 * bug fix: recursion is now permitted in accessors through
3185 SLOT-UNBOUND. (reported by Pascal Costanza)
3186 * bug fix: an error was signaled at startup if the HOME environment
3187 variable was defined, but had an empty value (reported by Peter Van Eynde)
3188 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3189 signal a PROGRAM-ERROR, not a BUG.
3190 * bug fix: SB-POSIX:READDIR works when built with large file support.
3191 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3193 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3194 for better automatic indentation support. (thanks to Matt Pillsbury)
3195 * optimization: loading generic functions no longer takes O(n^2) time,
3196 proportional to the amount of methods in the generic function
3197 (reported by Todd Sabin and Jeremy Brown)
3198 * optimization: the FIND and POSITION family of sequence functions
3199 are significantly faster on arrays whose element types have been
3201 * improvements to the Windows port:
3202 ** Intermittent heap corruption problems have been fixed. (thanks
3203 to Alastair Bridgewater)
3204 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3206 ** Lisp is able to unwind foreign exception frames from alien
3207 callbacks. (thanks to Alastair Bridgewater)
3209 changes in sbcl-1.0 relative to sbcl-0.9.18:
3210 * improvement: experimental support for threading on FreeBSD/x86.
3211 (thanks to NIIMI Satoshi)
3212 * improvement: runtime option --dynamic-space-size can be used
3213 to set the size of the dynamic space reserved on startup.
3214 * improvement: floating point modes in effect are now saved in
3215 core, and restored on startup.
3216 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3217 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3218 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3219 threads are not running after *SAVE-HOOKS* have run.
3220 * improvement: writes to CLOS instance slots are type-checked in code
3221 compiled with (SAFETY 3)
3222 * improvement: floating-point exception handling on FreeBSD (thanks to
3224 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3225 (thanks to Zach Beane)
3226 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3228 * improvement: added support for the Shift-JIS external format.
3229 (contributed by NIIMI Satoshi)
3230 * improvement: callbacks are supported on Linux/PPC. (thanks to
3232 * bug fix: compiler bug triggered by a (non-standard) VALUES
3233 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3234 * bug fix: file compiler no longer confuses validated and already
3235 dumped structurres. (reported by Kaersten Poeck)
3236 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3237 fill-pointer signals a type-error as required. (thanks to
3239 * bug fix: disassemly of funcallable instances works.
3240 * bug fix: single stepping on PPC.
3241 * bug fix: fix thread-safety problems in the type system (generally
3242 manifesting as nonsensical errors like "STRING is a bad type specifier
3243 for sequences" or "The value 1 is not of type FIXNUM")
3244 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3245 (reported by Josip Gracin)
3246 * bug fix: an error is signaled for attempts to displace arrays with
3247 incompatible element types (thanks to Mario Mommer)
3248 * bug fix: more correct handling of wide characters in debug info
3249 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3250 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3251 and don't cause extra consing
3252 * optimization: MAP and MAP-INTO are significantly faster on vectors
3253 whose elements types have been declared.
3254 * Improvements to SB-SPROF:
3255 ** Support for allocation profiling
3256 ** Reduced profiling overhead, especially for long profiling runs
3257 * Improvements to the Windows port:
3258 ** floating point exceptions are now reported correctly.
3259 ** stack exhaustion detection works partially.
3260 ** more accurate GET-INTERNAL-REAL-TIME.
3261 ** better RUN-PROGRAM behaviour in case of errors in the child
3263 ** PROBE-FILE now simplifies pathnames correctly.
3264 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3265 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3266 1st 1970 (although time timezone data will be unreliable).
3267 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3269 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3270 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3271 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3273 * bug fix: two potential GC deadlocks affecting threaded builds.
3274 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3275 returns T (reported by Anton Kazennikov)
3276 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3277 with non-variable places
3278 * bug fix: remove a race condition in the setting of
3279 funcallable-instance functions, this should make threaded CLOS
3280 code more stable against memory faults.
3281 * bug fix: corruption of specials when unbinding is interrupted by an
3282 asynchronous unwind (reported by Hannu Koivisto)
3283 * improvement: the debugger will now also display local variables that
3284 are only used once, for code compiled with a DEBUG optimization quality
3287 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3288 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3289 * incompatible change: External-format support for FFI calls. The
3290 SB-ALIEN:C-STRING no longer implies an ASCII
3291 external-format. Instead the string is subject to external-format
3292 conversion. Additionally return values of type SB-ALIEN:C-STRING
3293 are by default of type (SIMPLE-ARRAY CHARACTER), not
3294 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3295 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3296 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3297 * incompatible change: SB-EXT package no longer contains the
3298 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3299 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3301 * incompatible change: the single-stepper is no longer available
3302 on Alpha, Mips and Sparc platforms.
3303 * minor incompatible change: the direct superclasses of
3304 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3305 not (STANDARD-OBJECT FUNCTION). This makes the
3306 class-precedence-lists of GENERIC-FUNCTION and
3307 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3309 * minor incompatible change: the default stream external format on
3310 non-unicode SBCL is no longer detected from the locale, but is always
3312 * new feature: Add a version of evaluator that uses an interpreter instead
3313 of the compiler. EVAL still uses the compiler by default, to switch it
3314 to use the interpreter, set the value of the variable
3315 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3316 * minor incompatible change: the single-stepper REPL has been merged
3317 with the normal debugger (see the "Stepping" heading of the debugger help
3318 for more details). The debugger command STEP will no longer switch
3319 to the single-stepper REPL.
3320 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3321 for a type now works.
3322 * bug fix: loading of default sysinit file works. (thanks to Leonid
3324 * bug fix: better detection of circularities in the file-compiler.
3325 (reported by Marco Monteiro)
3326 * bug fix: the CL pathname functions now work with files that have
3327 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3328 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3329 systems with Unix98 pty semantics.
3330 * bug fix: ASDF-INSTALL will now work with bsd tar.
3331 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3333 * bug fix: timers expiring in dead threads no longer cause a
3334 type-error (reported by Paul "Nonny Mouse").
3335 * bug fix: thanks to more lightweight single-stepper instrumentation,
3336 code compiled with (DEBUG 3) will compile and execute significantly faster,
3337 and will have more accurate type-inferencing than before
3338 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3339 whose bindings are modified
3340 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3341 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3342 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3343 CL:SOFTWARE-VERSION with proper version
3345 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3346 * feature: implemented the READER-METHOD-CLASS and
3347 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3348 as specified by AMOP.
3349 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3351 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3352 (thanks to Lutz Euler)
3353 * optimization: hashing of general arrays and vectors has been
3354 improved. (reported by Any Fingerhut)
3355 * enhancement: SB-INTROSPECT is now able to find definitions of
3356 profiled functions. (thanks to Troels Henriksen)
3357 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3358 as well, allowing compiler-macros for SETF-functions to expand.
3359 * enhancement: step-instrumentation no longer wraps known
3360 single-value functions with multiple-value context, allowing
3361 better type inference.
3362 * fixed bug #337: use of MAKE-METHOD in method combination now works
3363 even in the presence of user-defined method classes. (reported by
3364 Bruno Haible and Pascal Costanza)
3365 * fixed bug #339(c): if there are applicable methods not part of any
3366 long-form method-combination group, call INVALID-METHOD-ERROR.
3367 (reported by Bruno Haible)
3368 * fixed bug #361: the :FUNCTION initarg in the protocol for
3369 initialization of methods can now be used to override
3370 internally-produced optimized functions. (reported by Bruno
3372 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3373 system-provided lambda expression no longer cause warnings about
3374 unbound #:|pv-table| symbols.
3375 * bug fix: improved the handling of type declarations and the
3376 detection of violations for keyword arguments with non-constant
3378 * bug fix: potentially erronous calls to PATHNAME and
3379 MERGE-PATHNAMES were being flushed in some cases.
3380 (reported by Richard Kreuter)
3381 * bug fix: compiled calls to TYPEP were mishandling obsolete
3382 instances. (reported by James Bielman and Attila Lendvai)
3383 * bug fix: format strings with ~> without matching ~< no longer
3384 trigger an AVER, but signal an understandable error instead.
3385 (reported by Antonio Martinez)
3386 * bug fix: specifying an output-file without a pathname-type for
3387 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3388 of input-file instead of "fasl". (reported by Robert Dodier)
3389 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3390 (reported by James Y Knight).
3391 * bug fix: compiler-macros-function did not consider the environment
3392 argument for shadowing by local functions.
3393 * bug fix: compiler-macros expansion was inhibited by local INLINE
3395 * bug fix: inline expansions of known functions were subject to
3396 step-instrumentation in high debug policies, leading to problems
3397 with type-inference.
3398 * bug fix: compiler failed to differentiate between different CONS
3399 types in some cases.
3400 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3401 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3402 * bug fix: #368: incorrect use of expressed vs. upgraded array
3404 * bug fix: #306a: more precise unions of array types.
3405 * thread-safety improvements:
3406 ** CONDITION-WAIT could return early on Linux, if the thread was
3407 interrupted and subsequently continued with SIGCONT.
3408 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3410 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3411 * added support for the ucs-2 external format. (contributed by Ivan
3413 * minor incompatible change: pretty printing of objects of type
3414 (cons symbol) is, in the default pprint-dispatch-table, now
3415 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3417 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3418 called later in a class's lifetime, possibly as late as when the
3419 first instance of the class is created. Previously,
3420 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3421 class became finalizeable.
3422 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3423 for multibyte external-format streams. (thanks to "vbzoli")
3424 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3425 with :ALLOCATION :CLASS inherited from superclasses of the
3427 * fixed bug: anonymous classes can now be created using the :NAME
3428 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3429 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3430 * fixed bug: core-files saved with :EXECUTABLE T can again be
3431 executed when SBCL_HOME isn't set. (reported by James Knight)
3432 * fixed bug: toplevel LOCALLY forms with declarations could
3433 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3434 * fixed bug: printing from several different threads using different
3435 values of *print-case* could cause invalid output, due to
3436 some internal special variables of the printer not being bound
3437 thread-locally (reported by Max Mikhanosha)
3438 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3439 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3440 (reported by Pascal Costanza)
3441 * fixed bug: FINALIZE-INHERITANCE is called from
3442 REINITIALIZE-INSTANCE on classes when the class has previously
3443 been finalized, as required by AMOP.
3444 * minor code generation optimizations:
3445 ** better register allocation in CLOS dispatching functions
3446 ** overflow detection when coercing signed bytes to fixnums on x86-64
3447 ** is now implemented with one IMUL instruction instead of three shifts
3448 ** more efficient bit-vector access on x86 and x86-64
3449 ** more efficient access to raw structure slots on x86 and x86-64
3450 * fixed some bugs revealed by Paul Dietz' test suite:
3451 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3452 return its argument.
3454 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3455 * feature: thread support on Solaris/x86, and experimental thread support
3457 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3459 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3460 default method for SLOT-UNBOUND.
3461 * minor incompatible change: prevent the user from specializing the
3462 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3463 somewhat counter to the intent of the protocol, I (CSR) think, and
3464 additionally it just doesn't work in SBCL as currently
3465 implemented, thanks to optimizations (that are always valid for
3466 the other three SLOT-VALUEish functions, but not for the setter).
3467 * minor incompatible change: the :SB-LDB feature is now enabled by
3468 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3469 the low-level debugger.
3470 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3471 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3472 down to an SB-SYS:FD-STREAM, allowing direct communication in
3473 more cases. Temporary files and pipes are still used as a fallback
3475 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3476 on the non-reentrant C functions localtime(3) and gmtime(3).
3477 * bug fix: global optimization policy was not visible in LOCALLY and
3479 * bug fix: class objects can be used as specializers in methods.
3480 (reported by Pascal Costanza)
3481 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3482 with a type error. (reported by blitz_ on #lisp)
3483 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3484 failed with a type error. (reported by Pascal Bourguignon)
3485 * bug fix: merging pathnames against defaults with :DIRECTORY
3486 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3487 (reported by James Y Knight)
3488 * bug fix: saving large (>2GB) cores on x86-64 now works
3489 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3490 constant index and a (simple-array (signed-byte 32)) array
3491 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3492 error (patch by Robert J. Macomber)
3493 * feature: TIME now displays the amount of run-time spent in GC
3494 * bug fix: The debugger now does a better job of respecting
3495 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3496 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3497 workaround for bug 403.)
3498 * bug fix: floating point exception handling now works on FreeBSD
3499 (thanks to NIIMI Satoshi)
3500 * fixed some bugs revealed by Paul Dietz' test suite:
3501 ** MISC.641: LET-conversion were not supposed to work in late
3503 * improvements to the Win32/x86 port:
3504 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3505 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3507 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3508 * new feature: source path information is generated for macro-expansion
3509 errors for use in IDE's like Slime (thanks to Helmut Eller)
3510 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3511 * bug fix: compiler does not loop forever on an invalid type in
3513 * improvement: compilation of most CLOS applications is significantly
3515 * optimization: added a limited bytecode compiler for simple toplevel
3516 forms, speeding up compilation and FASL loading
3517 * bug fix: the statistical profiler now properly distinguishes anonymous
3520 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3521 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3522 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3523 into subclasses of the finalized class. Now user calls to
3524 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3525 system return before any subclasses are finalized.
3526 * minor incompatible change: The reader no longer ignores errors
3527 regarding non-existent packages in #+ and #- feature tests.
3528 * new feature: command line options --no-sysinit, --no-userinit to
3529 inhibit loading the corresponding init files
3530 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3531 for sending data through UDP sockets (thanks to François-René Rideau)
3532 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3533 error is signalled instead (thanks to François-René Rideau)
3534 * minor incompatible change: Error signalling behaviour of lexical
3535 operations violating package locks has changed slightly. Refer to
3536 documentation on package locks for details.
3537 * enhancement: EVAL can process IF-expressions without resorting to the
3539 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3540 constant-folded properly due to missing out-of-line functions.
3541 (reported by Mika Pihlajamäki)
3542 * bug fix: LISTEN sometimes returned T even in cases where no data was
3543 immediately available from the stream
3544 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3545 were reversed. (reported by Levente Mészáros)
3546 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3547 when given a vector displaced to an adjustable array. (reported
3549 * bug fix: derivation of float boundaries from numbers outside the
3550 appropriate float range (reported by John Wiseman)
3551 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3553 * bug fix: precomputing cache entries for generic functions with
3554 some subclasses of specializers as yet invalid does not attempt to
3555 fill a cache line with a negative offset. (reported by Levente
3557 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3558 allow condition class objects as arguments to DOCUMENTATION and
3559 (SETF DOCUMENTATION); only find and set documentation for
3560 structure names for the STRUCTURE doc-type. (suggested by Gary
3562 * improvements to the Win32/x86 port:
3563 ** (user-homedir-pathname) and default initialization file
3564 locations now know about the user's "Documents and Settings"
3565 directory (thanks to Yaroslav Kavenchuk)
3566 ** run-program is implemented (thanks to Mike Thomas)
3567 ** sockets support (thanks to Timothy Ritchey)
3568 ** better backtrace support (thanks to Alastair Bridgewater)
3569 ** sb-grovel supported
3570 ** asdf-install and sb-posix work somewhat
3571 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3572 * improvements to the Solaris/x86 port:
3573 ** works on Solaris 11/Solaris Express
3574 ** floating-point exception handling support
3575 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3576 * fixed some bugs revealed by Paul Dietz' test suite:
3577 ** REMOVE-METHOD returns its generic function argument even when
3578 the method is not one of the generic functions' methods.
3579 ** objects declared as MEMBER types can be admissible arguments to
3580 structure accessors.
3581 ** printing characters should simply be printed by the FORMAT ~:C
3583 ** compiler failure when compiling functions with hairy constant
3584 defaults for optional parameters.
3585 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3586 function, which is already optimized.
3588 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3589 * new platform: experimental support for SBCL x86/Darwin, including
3590 MacOS X 10.4.5 on Intel.
3591 * new feature: Unicode character names are now known to the system
3592 (through CHAR-NAME and NAME-CHAR).
3593 * new feature: the filesystem location of SBCL's core file is
3594 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3595 * minor incompatible change: the contrib modules SB-POSIX and
3596 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3597 this change is to make it easier to distribute
3598 location-independent binaries.
3599 * bug fix: as implied by AMOP, standardized classes no longer have
3600 slots named by external symbols of public packages. (reported by
3602 * optimization: calling functions via constant symbols -- as in
3603 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3604 via the function object as in (FUNCALL #'FOO).
3605 * optimization: on x86 and x86-64, the calling convention for the
3606 case of dealing with an unknown number of values has been altered
3607 to be friendlier to the prediction heuristics implemented,
3608 particularly with reference to CALL and RET pairing. (thanks to
3609 Alastair Bridgewater)
3610 * optimization: on x86, the code for access to thread-local symbol
3611 values and binding/unbinding of thread-local symbols is smaller.
3612 (thanks to Alastair Bridgewater)
3613 * enhancement: CONSTANTP is now able to determine constantness of
3614 more complex forms, including calls to constant-foldable standardized
3615 functions and some special forms beyond QUOTE.
3616 * fixed bug: occasional GC crashes on Solaris/x86
3617 * optimization: x86-64 supports stack allocation of results of simple
3618 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3619 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3620 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3621 (thanks to James Knight)
3622 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3623 by the standard (thanks to Stephen Compall)
3625 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3626 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3627 be used for bundling the runtime and the core file into one
3628 executable binary. This feature is not currently supported on all SBCL
3629 platforms. (thanks to James Bielman and NIIMI Satoshi)
3630 * new feature: a generational or ephemeral garbage collector is now
3631 the default on the PowerPC platform (both Linux and Darwin). The
3632 old Cheney (stop and copy) collector is a build-time option.
3633 (thanks to Cyrus Harmon, after Raymond Toy)
3634 * minor incompatible change: the method by which SBCL finds its
3635 contributed modules has changed; it no longer relies on symbolic
3636 links from an $SBCL_HOME/systems directory, but searches directly
3637 in the subdirectories of $SBCL_HOME.
3638 * enhancement: the dynamic heap size on the Linux/PPC platform is
3639 markedly larger, even using the older Cheney garbage collector.
3640 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3641 certain complicated string types. (reported by Gary King)
3642 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3643 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3644 * fixed bug: DOCUMENTATION on structures no longer signals an
3645 error if no structure type of the right name exists. (reported by
3647 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3648 applicable non-standard primary or :AROUND method on
3649 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3650 no longer cause unbound variable errors. (reported by Kevin Reid)
3651 * fixed bug: metacircle resolution in cases where methods have slots
3652 added before the slots from STANDARD-METHOD. (reported by Jean
3654 * fixed bug: the Power PC assembly code for calling into lisp
3655 sometimes computed its return address wrongly (depending on the
3656 15th bit of the address, fixed at link time). This used to
3657 manifest itself in a segmentation violation while building PCL.
3658 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3659 many others over the years)
3660 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3661 the stack pointer (treated as a signed integer) is negative.
3662 (thanks to Peter van Eynde)
3664 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3665 * new platform: experimental support for the Windows operating
3666 system has been added. (thanks to Alastair Bridgewater)
3667 * fixed several bugs in and robustified the PPC FFI (including
3668 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3669 * bug fix: allow non-simple string symbol names (reported by Paul
3671 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3673 * bug fix: saving a core corrupted callbacks on x86/x86-64
3674 * bug fix: closed a loophole in metacircularity detection and
3675 grounding in the PCL implementation of CLOS.
3676 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3677 (reported by tomppa on #lisp)
3678 * bug fix: clear the direction flag on Lisp -> C transitions, as
3679 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3680 (reported by Andrej Grozin and Hendrik Maryns)
3681 * optimization: major improvements to GC efficiency on GENCGC platforms
3682 * optimization: faster implementation of EQUAL
3683 * optimization: emit more efficient opcodes for some common
3684 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3685 * optimization: several other minor code-generation improvements on x86-64
3686 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3688 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3689 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3690 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3691 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3692 by ANSI as a generic function, and for consistency (SETF
3693 GENERIC-FUNCTION-NAME) is treated likewise.
3694 * fixed bug #233.b: make constraint propagation notice when a variable
3695 value is changed after it is referenced but before it is used
3696 * fixed bug #296: no more arbitrary behaviour from filenames with
3697 odd characters as --load arguments. (reported by Adam Warner)
3698 * fixed bug #390: :CHARACTER-SET pathname components now work as
3699 expected. (reported by Tim Daly Jr)
3700 * fixed bug #391: complicated :TYPE intersections in slot
3701 definitions no longer cause an error in PCL internals.
3702 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3703 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3704 returning the number of octets which would be written to the
3705 file-stream. (thanks to Robert J. Macomber)
3706 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3707 arguments to the internal stream functions. (thanks to David
3709 * bug fix: stack exhaustion is now handled on the x86/SunOS
3710 platform. (thanks to Daisuke Homma)
3711 * bug fix: more accurate ROOM results on GENCGC platforms
3712 * optimization: improved type inference for arithmetic-for
3713 index variables in LOOP
3714 * optimization: faster floating-point SQRT on x86-64
3715 * fixed some bugs revealed by Paul Dietz' test suite:
3716 ** DOCUMENTATION returns NIL instead of "" for method combinations
3717 that don't have a docstring
3719 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3720 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3721 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3722 therefore are not customizeable by user code (as seems to be at
3723 least permitted and maybe required by AMOP). As a consolation,
3724 however, the SBCL implementation of these functions now calls
3725 REINITIALIZE-INSTANCE as specified by AMOP.
3726 * bug fix: slot-definition documentation is propagated as per ANSI
3727 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3728 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3729 argument, as do eslotd initialization methods. (from Pascal
3730 Costanza's "Closer" project)
3731 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3732 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3734 * bug fix: it is now possible to have more than one subclass of
3735 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3736 (reported by Bruno Haible, Pascal Costanza and others)
3737 * bug fix: the dependent update protocol now works for generic
3738 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3739 and Pascal Costanza)
3740 * bug fix: condition-class instances corresponding to
3741 DEFINE-CONDITION forms are now created eagerly. (reported by
3742 Kalle Olavi Niemitalo on comp.lang.lisp)
3743 * bug fix: floating point printing is more accurate in some
3744 circumstances. (thanks to Simon Alexander)
3745 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3746 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3747 * bug fix: callbacks on OS X now preserve stack-alignment.
3748 (thanks to Cyrus Harmon)
3749 * enhancement: the x86-64 disassembler is much better at
3750 disassembling SSE instructions. (thanks to Lutz Euler)
3751 * enhancement: CHECK-TYPE on a variable now allows type-inference
3752 (thanks to Vincent Arkesteijn)
3753 * optimization: improved performance of EUC-JP external format.
3754 (thanks to NIIMI Satoshi)
3755 * optimization: performance improvements to IO on file streams of
3756 :ELEMENT-TYPE CHARACTER
3757 * optimization: much faster memory allocation on x86-64
3758 * optimization: faster garbage collections (latency and throughput)
3760 * optimization: faster bignum subtraction and division on x86 and x86-64
3761 (thanks to Lutz Euler)
3762 * optimization: more accurate type-inference for loops that use a
3763 floating point index variable or a negative step.
3765 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3766 * bug fix: add a workaround to SBCL looping infinitely at startup on
3767 Linux kernels with apparently buggy implementations of personality().
3768 (thanks to Svein Ove Aas)
3769 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3770 (thanks to David Lichteblau)
3771 * bug fix: local bindings shadow global symbol macros for
3772 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3773 * optimization: non-open coded uses of numeric comparison operators
3774 (e.g. >) no longer cons when called with more than one parameter
3775 on platforms supporting dynamic-extent allocation.
3776 * enhancement: saving cores with foreign code loaded is now supported
3777 on MIPS/Linux in addition to the previously supported platforms.
3778 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3779 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3780 * bug fix: division by zero in sb-sprof when no samples were collected
3781 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3782 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3783 (thanks to Alexander Kjeldaas)
3784 * new feature: ignoring the return values of destructive functions
3785 like NREVERSE signals a compile-time style-warning.
3786 (thanks to Kevin Reid)
3787 * new feature: the alignment of alien structure fields can be
3788 explicitly specified. (thanks to Cyrus Harmon)
3789 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3790 and dump core on SIGQUIT
3792 ** incompatible change: threads do not inherit values of specials
3793 from their parents (see manual)
3794 ** bug fix: threads stacks belonging to dead threads are freed by the
3795 next exiting thread, no need to gc to collect thread stacks anymore
3796 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3797 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3798 ** bug fix: dynamic variable and thread start related gc lossage
3799 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3801 * fixed some bugs revealed by Paul Dietz' test suite:
3802 ** SUBTYPEP is slightly more accurate on heinously complicated
3803 CONS types where some of the members have uncertain (in the
3804 NIL, NIL sense) type relationships to each other.
3806 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3807 no longer purified unless :PURIFY T is explicitly specified.
3808 ** Non-purified cores are significantly smaller than before
3810 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3811 * new feature: timers based on Zach Beane's excellent timer package
3812 * added support for the following external formats: koi8-u,
3813 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3814 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3815 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3816 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3817 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3818 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3819 * incompatible change: a threaded SBCL will no longer revert to
3820 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3821 * bug fix: interrupts are disabled until startup is complete; no
3822 more sigsegvs when receiving a signal to soon
3823 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3825 * bug fix: add a workaround for the memory randomization features in
3826 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3827 workaround will only be in effect on systems with the proc filesystem
3829 * bug fix: printing objects of type HASH-TABLE signals a
3830 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3832 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3833 have been running for over 50 days. (reported by Gilbert Baumann)
3834 * bug fix: the logic for getting names of functions gets less
3835 confused when confronded with alternate-metaclass
3836 funcallable-instances. (reported by Cyrus Harmon)
3837 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3838 consistent, even on internal alternate-metaclass objects.
3839 * bug fix: flush closure information collected by physical
3840 environment analysis prepass before the main pass. (bug reported
3842 * bug fix: compiler pack phase does not modify a hashtable, which is
3843 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3844 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3845 may be expanded. (reported by Alexander <malishev> on c.l.l)
3846 * bug fix: no more style-warnings when compiling code using LAST
3847 under high-SPEED low-SPACE settings. (reported by David Wallin
3849 * fixed some incompatibilities between SBCL's MOP and the MOP
3851 ** the METAOBJECT class is now implemented;
3852 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3853 STANDARD-OBJECT, as required;
3854 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3855 now compatible (as required by VALIDATE-SUPERCLASS); there
3856 remains a consistency requirement over the presence or absence
3857 of the FUNCTION class in the superclass list of finalized
3858 classes; see the manual for more details;
3859 ** the :AROUND method for COMPUTE-SLOTS on
3860 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3861 requested slot ordering.
3863 ** bug fix: parent thread now can be gc'ed even with a live
3865 ** bug fix: binding a special with PROGV to no value is not
3866 the same as that symbol not having been bound (thanks to
3868 ** bug fix: binding specials is thread safe (thanks to
3870 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3871 and SB-SPROF do not die with 'no handler for signal XX in
3872 interrupt_handle_now(..)' anymore
3873 ** bug fix: WITH-TIMEOUT works with multiple running threads
3874 * fixed some bugs revealed by Paul Dietz' test suite:
3875 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3876 the :method-class keyword argument.
3878 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3879 * new port: the Solaris operating system on x86 processors is now
3880 mostly supported, though some rough edges in the environment
3881 remain. (thanks to Daisuke Homma)
3882 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3883 space for its heap. (thanks to Thiemo Seufer)
3884 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3885 closures. (thanks to Thiemo Seufer)
3886 * minor incompatible change: eof selects abort in the debugger.
3887 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3888 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3890 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3891 deprecated, and will go away in a future revision of SBCL.
3892 * minor incompatible change: GC-ON and GC-OFF are no longer
3893 implemented with a counter, it does not matter how many times gc
3894 is switched on or off
3895 * bug fix: discriminating functions for generic function classes
3896 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3897 make invalid assumptions about method precedence order. (reported
3899 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3900 platforms. (thanks to Thiemo Seufer)
3901 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3902 * bug fix: correct pathname printing with printer escaping is on.
3903 (thanks to Kevin Reid)
3904 * bug fix: complex VOP definitions in "user-space" no longer trigger
3905 package locks. (reported by Zach Beane)
3906 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3907 for funcallable-instance functions, and is no different from
3909 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3910 characters in the current readtable. (reported by Nicholas Neuss)
3911 * bug fix: SUBTYPEP on various CONS types returns more a more
3912 accurate acknowledgment of its certainty.
3913 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3914 lists in some cases. This partially fixes bug 384.
3915 * flush all standard streams before prompting in the REPL and the
3917 * bug fix: signal handling and triggering gc do not conflict
3918 directly anymore, in particular a high frequency sb-sprof does
3919 not prevent gc from running
3920 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3921 approximation for timezone and DST information between the
3922 universal time epoch and the smallest negative 32-bit time_t.
3923 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3924 year 1899 so long as the encoded time is non-negative.
3925 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3926 the correct answer for non-constant rotate amounts when performing
3927 an inline 32-bit rotation.
3929 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3930 there is only one thread in the session
3931 ** bug fix: memory leak for streams created in one thread and
3932 written to in another
3933 ** bug fix: lockup when compiled with gcc4
3934 ** bug fix: race that allows the gc to be triggered when gc is
3936 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3937 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3939 ** bug fix: finished threads are gc'ed properly
3940 * fixed some bugs revealed by Paul Dietz' test suite:
3941 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3942 has arguments with a different set of applicable methods from
3943 the orignal arguments.
3944 ** The type error thrown by MAP now has a correct expected-type
3946 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3947 name a compiled function.
3948 ** Three MISC tests where a large bignum was improperly coerced to
3949 a float that couldn't represent that bignum during type
3950 derivation were fixed.
3951 ** SUBTYPEP can now handle types involving the negation of a
3952 list-form FUNCTION type.
3953 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3954 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3955 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3957 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3958 * New feature: Experimental support for bivalent streams: streams
3959 opened with :element-type :default now allow character and binary
3960 (unsigned-byte 8) I/O
3961 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3962 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3964 * bug fix: no more highly sporadic "couldn't check whether ~S is
3965 readable" when reading a stream and an interrupt hits in the middle
3966 of a select system call
3967 * compiler better recognizes complex arrays (reported by Eduardo
3969 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3970 for variables on SBCL built with linkage-tables. (reported by Luis
3972 * various error reporting improvements.
3973 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3974 (Thanks to Thiemo Seufer)
3975 * bug fix: nested reader invokations work correctly
3976 * bug fix: it is possible to have simultaneous references to foreign
3977 code and foreign data with the same name.
3979 ** added x86-64 support
3980 ** incompatible change: the threading api now works with thread
3981 objects instead of thread ids
3982 ** bug fix: threads are protected from signals and interruption when
3983 starting up or going down
3984 ** bug fix: a race where an exiting thread could lose its stack to gc
3985 ** bug fix: don't halt on infinite error in threads if possible
3986 ** fixed numerous gc deadlocks introduced in the pthread merge
3987 ** bug fix: fixed thread safety issues in read and print
3988 ** bug fix: debugger doesn't hang on session lock if interrupted at
3989 an inappropriate moment
3990 ** bug fix: run-program is now thread safe(r)
3991 ** bug fix: inner with-recursive-lock no longer releases the mutex
3992 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3993 * fixed some bugs revealed by Paul Dietz' test suite:
3994 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3995 EXPECTED-TYPE slots filled.
3996 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3998 ** MAKE-CONDITION accepts classes as type-designators.
3999 ** COMPILE may never return NIL.
4000 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4001 range before calling Unix time functions
4003 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4004 * numerous signal handling fixes to increase stability
4005 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4006 * minor incompatible change: we now correctly canonize default
4007 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4008 as per the MOP, rather than the historical (INITARG INITFUNCTION
4009 INITFORM). (reported by Bruno Haible)
4010 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4011 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4012 for more information.
4013 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4014 pathname is a directory pathname.
4015 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4016 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4018 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4019 :METACLASS argument in addition to a class name. (reported by
4020 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4021 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4022 (reported by Bruno Haible; patch from Gerd Moellmann)
4023 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4025 * bug fix: more cleanups to the floating point exception handling on
4026 x86-64 (thanks to James Knight)
4027 * bug fix: the compiler does not try to constant fold calls of
4028 COERCE and BIT-* functions when they return freshly constructed
4029 objects. (reported by Nikodemus Siivola and Paul Dietz)
4030 * optimization: improved the MIPS versions of generic (in the
4031 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4032 * optimization: direct conversion of (unsigned-byte 32) to floats on
4033 the PowerPC platform.
4034 * optimization: structure instances with raw slots now use less
4035 memory, and probably show better memory locality. (thanks to
4037 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4038 are treated as requests for stack allocation on the x86-64,
4039 Alpha-32, PPC and SPARC platforms.
4040 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4041 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4042 (thanks to Tony Martinez)
4044 ** gcing a dead thread can no longer lead to lockups
4045 ** threads block signals until they are set up properly
4046 ** errno is no longer shared by threads
4047 ** interrupt-thread restores the eflags register on x86
4048 ** fixed some lockups due to gc/thread interaction
4049 * fixed some bugs revealed by Paul Dietz' test suite:
4050 ** invalid dotted lists no longer raise a read error when
4051 *READ-SUPPRESS* is T
4052 ** signal an error if a symbol that names a declaration is used
4053 as the name of a type, or vice versa
4054 ** allow using the (declare (typespec var*)) abbreviation for
4055 (declare (type typespec var*)) with all type specifiers
4056 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4057 ** always return NIL from PPRINT-POP when OBJECT is NIL
4058 ** don't signal errors when pretty-printing malformed LABELS,
4059 FLET or MACROLET forms
4060 ** declarations in a DOLIST body are also in scope for the
4062 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4064 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4067 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4068 * fixed cross-compiler leakages that prevented building a 32-bit
4069 target with a 64-bit host compiler.
4070 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4071 opened with :IF-EXISTS :OVERWRITE.
4072 * fixed bug 281: error for an invalid qualifier in a short-form method
4073 combination method is not signalled until the faulty method is called.
4074 * bug fix: iteration variable type inferrer failed to deal with open
4075 intervals. (reported by Alan Shields)
4076 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4077 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4078 or more runtime options were provided to the sbcl binary.
4079 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4080 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4081 * optimization: there's now a fast-path for fixnum arguments in the
4082 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4083 * optimization: the code generated on x86-64 is more compact thanks
4084 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4085 * bug fix: floating-point exception handling now partly works on
4086 x86-64. (Thanks to James Knight)
4087 * improvement to the MIPS backend from Thiemo Seufer: C-style
4088 64-bit long long arguments and return values to alien functions
4090 * fixed some bugs revealed by Paul Dietz' test suite:
4091 ** the type-error signalled from WARN has a filled-in DATUM slot.
4092 ** the type-error required when a stream is not associated with
4093 a file has the stream as its datum.
4094 ** type-errors on single-floats on x86-64 no longer have
4095 :INVALID-OBJECT as the datum
4096 ** the type-errors signalled for invalid function names now have
4097 a correct expected type
4098 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4099 for structures defined with a :TYPE. Documentation strings for
4100 typed structures are no longer immediately discarded
4101 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4102 broadcast streams and synonym streams. FILE-LENGTH now also works
4103 on broadcast streams.
4105 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4106 * incompatible change: the --noprogrammer option, deprecated since
4107 version 0.7.5, has been removed. Please use the equivalent
4108 --disable-debugger option instead.
4109 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4111 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4112 inoperational for a while now) has been completely removed.
4113 * null lexical environments are now printed as #<NULL-LEXENV>,
4114 significantly reducing the amount of clutter in typical backtraces.
4115 * documentation on weak pointers, finalization, and after GC hooks
4116 has been added to the manual.
4117 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4118 as other specialized array types, is much faster. SUBSEQ and
4119 COPY-SEQ on such arrays have also been sped up.
4120 * optimization: EQL is now more efficient when at least other argument
4121 is known to be of type (OR FIXNUM (NOT NUMBER)).
4122 * fixed bug: the runtime is now less vulnerable to changes in the
4123 size of the SBCL object on OS X, and virtual memory is reserved for
4124 all spaces that need to be at a fixed address.
4125 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4126 * fixed bug: finalizers and after GC hooks that cause consing are now
4128 * fixed bug: compiler error messages and summaries are now printed to
4129 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4130 * fixed inference of the upper bound of an iteration variable.
4131 (reported by Rajat Datta).
4132 * fixed bug 211e: calling local functions with duplicated constant
4133 keyword argument no longer causes a bogus style warning about an
4135 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4136 ftype declaration to be disregarded. (reported by Dave Roberts)
4137 * fixed bug 373: caused by erronous compilation of references to alien
4138 variables in the runtime on ppc/darwin.
4139 * fixed bug 376: CONJUGATE type deriver.
4140 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4141 (reported by Baughn on #lisp)
4142 * a cross-compiler bug on non-x86 platforms has been identified and
4143 fixed. (thanks to Bruno Haible)
4144 * improvements to the MIPS runtime code for increased stability.
4145 (thanks to Thiemo Seufer)
4146 * increased the maximimum compact environment size to allow
4147 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4148 * partial workaround for bug 135: don't name the function we're
4149 calling for hairy cases of EVAL, so as not to accumulate one environment
4150 entry per call to EVAL. (reported by Kevin Reid)
4151 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4152 * optimization: type testing for non-vector arrays should be faster.
4153 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4155 * bug fix: setting 31st element of a bit vector to zero did not work
4157 * bug fix: redefining a class definition which failed due to a
4158 previous accessor / function clash now works (but see BUGS entry
4159 #380 for more problems in this area). (thanks to Zach Beane)
4160 * the long form of DEFINE-METHOD-COMBINATION disables method group
4161 checking when given a single method group with pattern *. (thanks
4163 * on x86 compiler supports stack allocation of results of simple
4164 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4165 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4166 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4167 * fixed some bugs related to Unicode integration:
4168 ** the restarts for recovering from input and output encoding
4169 errors only appear when there is in fact such an error to
4171 * fixed some bugs revealed by Paul Dietz' test suite:
4172 ** MISC.549 and similar: late transformation of unsafe type
4173 assertions into derived types caused unexpected code
4175 ** SCALE-FLOAT type deriver is less wrong.
4176 ** type derivers for EXP, LOG and similar functions compute result
4177 types for complex arguments better.
4178 ** (MISC.563) CONJUGATE type deriver works for very restricted
4180 ** out-of-line type testers for character strings are available.
4181 ** EQUAL compiler transform understands specialness of objects
4183 ** accessing double-floats stored on the stack now works on x86-64.
4184 ** debugger internals could sometimes create invalid lispobjs,
4185 resulting in GC crashes.
4186 ** MISC.548: type check weakening can convert required type into
4188 ** initialization forms for bindings are not in scope of free special
4191 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4192 * incompatible change: thread support for non-NPTL systems has
4193 been removed - locking is buggy and unreliable. A threaded
4194 SBCL build will now warn at startup and refuse to create
4195 new threads, unless futex support is detected in the kernel
4196 * incompatible change: the top level REPL now has only an ABORT
4197 restart associated with it, not TOPLEVEL and ABORT as it used to.
4198 TOP and TOPLEVEL are now available as debugger commands for
4199 returning to the top level.
4200 * incompatible change: forms evaluated in the REPL now use the
4201 global optimization policy.
4202 * incompatible change: user- and system-initialization files are
4203 no longer processed with LOAD, but by READ and EVAL; hence the
4204 global optimization policy, startup package, readtable, etc,
4206 * The .fasl file format number has been incremented because of
4207 various incompatible changes.
4208 * internal entry point details and argument counts no longer appear
4209 in backtraces unless explicitly requested by setting
4210 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4211 * built-in and standard functions no longer have names like "top
4212 level local call to FOO".
4213 * fixed bug 32: functions defined in non-null lexical environments
4214 now have more legible printed representation
4215 * fixed bug 33: functions defined in non-null lexical environemnts
4216 are now more amenable to inspection by INSPECT.
4217 * workaround for bug 354: XEPs no longer appear in backtraces unless
4218 explicitly requested.
4219 * fixed bug: receiving the signal which results from attempting to
4220 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4221 SIGBUS on other *BSDs) on architectures where the C stack is also
4222 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4223 to debugger confusion or wild instability. (reported by Cheuksan
4225 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4226 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4227 (reported by Lutz Euler)
4228 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4229 compiled code. (reported by Paul Dietz)
4230 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4231 specialized parameter to a method to something that is not TYPEP
4232 the specializer is now possible.
4233 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4234 face of package deletion.
4235 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4236 pathname. (reported by David Tolpin on c.l.l)
4237 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4238 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4239 STRING-STREAM and FILE-STREAM, respectively.
4240 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4241 than previously; in addition, its test suite is now run on build.
4242 (thanks to Luke Gorrie)
4243 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4244 * optimization: added a immediate representation for single-floats
4246 * fixed some bugs revealed by Paul Dietz' test suite:
4247 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4248 ** attempting to create a package with a colliding nickname causes
4249 correctable errors to be signalled.
4250 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4251 ** several x86-64 backend bugs related to sign-extension of immediate
4254 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4255 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4256 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4258 * fixed loading of multiply forward-referenced layouts.
4259 (thanks to Cheuksan Wang)
4260 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4261 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4262 (see COMPILE-FILE documentation for details of :PRINT option)
4263 * fixed bugs 19 and 317: fixed-format floating point printing is
4264 more accurate. This also fixes a bug reported by Adam Warner
4265 related to the ~@F format directive.
4266 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4268 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4269 dispatch table if the from-char is a dispatch macro character.
4270 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4271 by the wordsize no longer ignore the last word. (reported by Lutz
4273 * fixed bug in type checking of dynamic-extent variables. (reported
4275 * optimization: sequence traversal functions use their freedom to
4276 coerce function designators to functions.
4277 * optimization: code with many calls to CLOS methods specialized on
4278 CLOS classes has had redundant type checks removed.
4279 * optimization: added declarations to speed up operations that access
4280 the internal character database (for example STRING-UPCASE)
4281 * optimization: comparison operations between floats and sufficiently small
4282 fixnums no longer create extra rationals
4283 * fixed some bugs related to Unicode integration:
4284 ** portions of multibyte characters at the end of buffers for
4285 character-based file input are correctly transferred to the
4286 start of the buffer at the next read.
4287 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4288 passing it through to OPEN.
4289 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4290 argument given to internal calls to OPEN.
4291 ** the built-in comment readers (introduced by character sequences
4292 ";" and "#|") are more forgiving to encoding errors; they will
4293 STYLE-WARN and then attempt to resync the stream at a character
4294 boundary. (thanks to Teemu Kalvas)
4295 * fixed some bugs in the x86-64 port:
4296 ** Negative short int return values from c-calls are sign-extended
4298 ** The stack is aligned to 16-bytes for c-calls, as required by
4299 the ABI. (thanks to Cheuksan Wang)
4300 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4301 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4302 for enums. (thanks to Vincent Arkesteijn)
4303 ** Multiple small optimizations and bugfixes for floating point
4305 * fixed some bugs revealed by Paul Dietz' test suite:
4306 ** Space, Tab, Linefeed, Return and Page have the invalid
4307 secondary constituent character trait.
4308 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4310 ** WITH-INPUT-FROM-STRING should only update the index place on
4312 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4313 works more reliably.
4314 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4315 with one-dimensional arrays with fill pointers.
4316 ** TYPE-OF failed on a complex with an integer realpart and a
4318 ** compiler failure during type inference for the code of form
4319 (IF (EQL X (THE ...)) ...) (MISC.535).
4321 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4322 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4323 platform. The port supports 61-bit fixnums, large memory spaces
4324 and reloading shared object files.
4325 * enhancement: saving cores with foreign code loaded is now
4326 supported on ppc/Darwin in addition to the previously supported
4328 * enhancement: the statistical profiler now walks deeper into the
4329 call stack for more meaningful call-graphs and accrued time
4330 reports (x86/x86-64 only). It also now reports time spent in
4332 * enhancement: it is now possible to trace most individual methods
4333 of a generic function in addition to tracing the generic function
4335 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4337 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4338 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4339 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4340 produces an error. (thanks to Vincent Arkesteijn)
4341 * bug fix: NAMESTRING on pathnames with :WILD components in their
4342 directories works correctly. (thanks to Artem V. Andreev)
4343 * fixed bug 125: compiler preserves identity of closures. (reported
4345 * bug fixed: functions with &REST arguments sometimes failed with
4346 "Undefined function" when compiled with (DEBUG 3). (reported by
4348 * bug fix: overflow during compiling of setting element of a bit
4349 vector with constant index and value. (reported by Timmy Douglas)
4350 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4351 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4352 * on x86 compiler partially supports stack allocation of dynamic-extent
4354 * GO and RETURN-FROM do not check the extent of their exit points
4355 when compiled with SAFETY 0.
4356 * fixed some bugs related to Unicode integration:
4357 ** encoding and decoding errors are now much more robustly
4358 handled; it should now be possible to recover even from invalid
4359 input or output to the terminal. (thanks to Teemu Kalvas)
4360 ** provided a first cut at implementing STRING-TO-OCTETS and
4361 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4362 ** altered the SB-MD5 contributed module slightly, changing the
4363 interface just enough for it to be supportable for builds where
4364 lisp characters are not eight bits.
4365 * fixed some bugs revealed by Paul Dietz' test suite:
4366 ** the FORMATTER-generated functions for ~V[ conditionals require
4367 the correct number of arguments.
4368 ** READ-FROM-STRING returns the mandated second value when applied
4369 to displaced strings.
4370 ** the #\Rubout and #\Backspace characters are treated as invalid
4371 constituent characters by the tokenizer.
4373 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4374 * new feature: reloading changed shared object files with
4375 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4376 * new feature: references to foreign variables and functions
4377 can now be compiled and loaded before the corresponding shared
4378 object file is loaded, as long as the foreign definitions are
4379 available at runtime.
4380 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4381 supported. (thanks to Dan Debertin)
4382 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4383 just keywords. (thanks to Vincent Arkesteijn)
4384 * fixed bug #331: structure-class instances corresponding to
4385 DEFSTRUCT forms are now created eagerly.
4386 * fixed bug #345: backtraces from calls to undefined functions work
4387 on x86 as well. Related bug #61 is now also partially fixed on x86
4388 (backtraces from throws to unknown catch tags.)
4389 * bug fix: lambda-list parsing is now stricter vrt. order and number
4390 of lambda-list keywords.
4391 * bug fix: as specified by AMOP, an error is signalled if a
4392 class-option appears multiple times in a DEFCLASS form. (reported
4394 * bug fix: RANDOM can be compiled when the compiler derives the type
4395 of its numeric argument as a disjoint set of small integers.
4396 (reported by Paul Dietz)
4397 * bug fix: starting a core saved with shared objects loaded when
4398 those objects are not available no longer causes threaded SBCL to
4399 hang. (reported by Sean Ross)
4400 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4402 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4403 argument, which must always be NIL. (reported by Kalle Niemitalo)
4404 * bug fix: printing 1.0d+23 no longer results in an error.
4405 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4406 * bug fix: structure slot setters preserve evaluation order. (thanks
4408 * fixed some bugs related to Unicode integration:
4409 ** RUN-PROGRAM can allow its child to take input from a Lisp
4410 stream. (reported by Stefan Scholl)
4411 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4412 locales. (reported by Ken Causey)
4413 * fixed some bugs revealed by Paul Dietz' test suite:
4414 ** INCF, DECF and REMF evaluate their place form as specified in
4416 ** FORMATTER expands ~{ ~} iteration directives with V or #
4417 parameters correctly.
4418 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4419 consequent uses no arguments correctly.
4420 ** the system has a partial understanding of the (COMPLEX RATIO)
4422 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4425 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4426 * new feature: a build-time option (controlled by the :SB-UNICODE
4427 keyword feature, enabled by default) for building the system with
4428 support for the entire 21-bit character space defined by the
4430 * new feature: the system now has rudimentary external-format
4431 support; the primary user-visible change at this time is that
4432 characters with the high bit set (such as lower-case-e-acute) will
4433 print correctly to a terminal in a UTF-8 environment.
4434 * minor incompatible change: BASE-CHAR no longer names a class;
4435 however, CHARACTER continues to do so, as required by ANSI.
4436 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4437 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4438 has been moved to the SB-EXT package (temporarily re-exported from
4440 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4441 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4443 * fixed bug #351: better error-handlind and reporting for malformed
4445 * fixed bug #350: bignum-printing is now more memory-efficient,
4446 allowing printing of very large bignums, eg. (expt 2 10000000).
4447 (reported by Bruno Haible)
4448 * fixed bug #302: better primitive-type selection for intersection
4450 * fixed bug #308: non-graphic characters now all have names, as
4451 required. (reported by Bruno Haible)
4452 * bug fix: redefining a class with different superclasses now correctly
4453 removes it from the direct-subclasses of its previous superclasses.
4454 (reported by David Morse)
4455 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4456 new value now works. (reported by Bruno Haible)
4457 * bug fix: correct canonicalization of multiple non-standard slot
4458 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4459 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4460 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4461 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4462 now exists, an signals an error.
4463 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4464 during macroexpansion for non-iteration variables as well. (reported
4465 by Bruno Haible for CMUCL)
4466 * bug fix: Cyclic structures and unprintable objects in compiler
4467 messages no longer cause errors. (reported by Bruno Haible)
4468 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4469 and READ-FROM-STRING all now return a primary value of NIL if
4470 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4471 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4472 (reported by Bruno Haible for CMUCL)
4473 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4474 do not designate a condition. (reported by Bruno Haible for
4476 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4477 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4478 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4479 permitting resolution in favour of any of the conflicting symbols.
4480 (reported by Bruno Haible for CMUCL)
4481 * bug fix: EQUAL compiler optimizations is less aggressive on
4482 strings which can potentially compare true despite having distinct
4483 specialized array element types.
4484 * bug fix: unit enumerations can be defined without dividing by
4485 zero. (thanks to Vincent Arkesteijn)
4486 * FORMAT compile-time argument count checking has been enhanced.
4487 (report from Bruno Haible for CMUCL)
4488 * a partial workaround for the bug 262: the compiler does not try to
4489 inline-expand a local function doing RETURN-FROM from a deleted
4490 BLOCK. (thanks to Peter Denno for the bug report and to David
4491 Wragg for the simple test case)
4492 * fixed some bugs revealed by Paul Dietz' test suite:
4493 ** RENAME-PACKAGE allows all package designators as new package
4495 ** constraint propagation and lambda variable substitution are
4496 more cautious in dealing with partially deleted code.
4497 ** compiler sometimes lost reoptimization passes.
4498 ** CERROR, given a condition as condition designator, passes its
4499 remaining arguments to the continue format control without
4501 ** Case-altering FORMAT directives work correctly on non-ASCII
4503 ** The REAL type specifier handles bounds outside the floating
4504 point ranges without signalling FLOATING-POINT-OVERFLOW.
4505 ** Functions with IR1-transformations can create intercomponent
4506 references to global functions.
4507 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4509 ** FORMAT ~R treats a nil value for its first parameter correctly.
4511 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4512 * enhancement: saving cores with foreign code loaded is now
4513 supported on x86/NetBSD and sparc/Linux in addition to the previously
4514 supported platforms.
4515 * bug fix: on some platforms repeated installations caused multiple
4516 copies of HTML documentation to be installed -- should not happen
4517 any more. (reported by Stefan Scholl)
4518 * bug fix: parsing self-recursive alien record types multiple times
4519 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4520 original patch by Helmut Eller for CMUCL)
4521 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4522 (thanks to Richard Kreuter)
4523 * bug fix: defining classes whose accessors are methods on existing
4524 generic functions in other (locked) packages no longer signals
4525 bogus package lock violations. (reported by François-René Rideau)
4526 * bug fix: special variables as DEFMETHOD parameters no longer have
4527 associated bogus type declarations. (reported by David Wragg and
4529 * bug fix: read-write consistency on streams of element-type
4530 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4531 * bug fix: redefiniton of the only method of a generic function with
4532 no DEFGENERIC no longer emits a full WARNING. In addition,
4533 redefinition of generic functions with no DEFGENERIC to an
4534 incompatible lambda list now signals an error. (thanks to Zach
4536 * bug fix: DEFGENERIC now works even when there's a function of the
4537 same name in an enclosing lexical environment. (thanks to Zach
4539 * fixed compiler failure, caused by instrumenting code during
4540 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4541 * optimization: added loop analysis and improved register allocation
4542 * fixed some bugs revealed by Paul Dietz' test suite:
4543 ** POSITION on displaced vectors with non-zero displacement
4544 returns the right answer.
4545 ** (SIMPLE-STRING) is a valid type specifier for sequence
4547 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4549 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4550 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4552 ** The justification version of the FORMAT ~< directive treats
4553 non-zero minpad parameter correctly.
4555 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4556 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4557 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4558 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4559 the supported interface.
4560 * new feature: Single-stepping of code compiled with DEBUG 2 or
4561 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4562 * new feature: saving cores with foreign code loaded is now
4563 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4564 Timothy Moore's work for CMUCL)
4565 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4566 parameters to * instead of NIL if no initform is supplied.
4567 (reported by Johan Bockgaard)
4568 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4569 correctly when FUNCALL appears as the car of the form. Note:
4570 despite this FUNCALL forms are not currently subject to
4571 compiler-macro expansion. (port of Raymond Toy's fix for the
4572 same from CMUCL, reported by Johan Bockgaard)
4573 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4574 (thanks for Teemu Kalvas)
4575 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4576 case instead of terminating the iteration (thanks for Julian
4577 Squires, Sean Champ and Raymond Toy)
4578 * bug fix: incorrect expansion of defgeneric that caused a style
4579 warning. (thanks for Zach Beane)
4580 * bug fix: slot accessor effective method computation works properly
4581 for classes with multiple non-standard applicable methods on
4582 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4583 * on x86 compiler supports stack allocation of results of LIST and
4584 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4585 CMUCL implementation by Gerd Moellmann)
4586 * fixed some bugs revealed by Paul Dietz' test suite:
4587 ** FORMAT strings with both the ~<~:;~> form of the justification
4588 directive and pretty-printing directives cause an error.
4590 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4591 * incompatible change: the internal functions
4592 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4593 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4594 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4595 instead of the old functions.
4596 * new feature: on platforms where "dladdr" is available foreign
4597 function names now appear in backtraces. (based on Helmut Eller's
4599 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4600 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4602 * documentation: ASDF manual is now distributed with SBCL.
4603 * bug fix: SBCL can now load its contributed modules with REQUIRE
4604 even if the system-provided entries have been removed from
4605 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4607 * bug fix: backtraces involving undefined functions or assembly
4608 routines are more informative. (thanks to Brian Downing)
4609 * bug fix: mutually referent alien structures now work correctly.
4610 (reported by Rick Taube)
4611 * bug fix: structures defined by WITH-ALIEN can be referred to
4612 within other definitions in the same WITH-ALIEN.
4613 * bug fix: division operators (MOD, TRUNCATE and the like) with
4614 constant zero divisors and integer dividends no longer generate
4616 * bug fix: provide default methods for INPUT-STREAM-P and
4617 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4618 * bug fix: improve the detection and resolution of MOP metacycles
4619 (where effective method computation depends on the generic function
4620 having its effective method computed). (reported by Bruno Haible)
4621 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4622 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4623 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4624 * bug fix: pathnames with relative directory components can be
4625 represented relative to default pathnames.
4626 * optimization: in taking the GCD of bignums, reduce the two bignums
4627 to approximately the same size (using Euclid's algorithm) before
4628 applying the more sophisticated binary GCD. (thanks to Juho
4630 * optimization: COUNT on bitvectors now operates word-at-a-time.
4631 * optimization: ASH with a positive, but not necessarily constant,
4632 (leftwards) shift, when in a modular context, is compiled to a
4634 * fixed some bugs revealed by Paul Dietz' test suite:
4635 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4636 if the corresponding argument is NIL.
4637 ** FORMAT directives accepting a minpad parameter treat negative
4639 ** literal commas as character parameters to FORMAT directives are
4641 ** literal spaces directly after ~<Newline> directives within a
4642 format-logical-block (~:< ~@:>) do not induce :FILL-style
4643 conditional newlines.
4644 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4645 as specified: it no longer includes conditional newlines).
4646 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4648 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4649 :PER-LINE-PREFIX argument does not evaluate to a string.
4651 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4652 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4653 the manual for details; for now, package locks can be disabled by
4654 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4655 if no major problems are found then it is likely that they will be
4656 compiled in unconditionally.
4657 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4658 unsupported operators on all platforms. To load a shared library
4659 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4660 object file, link it into a shared library outside of SBCL and
4661 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4663 * bug workaround: ROOM T and the GC were not working together
4664 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4665 reporting facility aren't preserved. That reporting has been
4666 disabled, so now until and unless someone figures out how to make it
4667 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4668 * minor incompatible change: as threatened around sbcl-0.8.0, the
4669 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4670 The symbols are also exported from SB-PCL for backwards
4671 compatibility, but more so than before SB-PCL should be treated as
4672 an implementation-internal package.
4673 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4675 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4676 It is known as of this release not to work on the Alpha, however.
4677 * fixed bug #167: errors signalled due to illegal syntax in method
4678 bodies are now more legible.
4679 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4680 designators and can hence be used with TYPEP.
4681 * fixed bug #333: CHECK-TYPE now ensures that the type error
4682 signalled, if any, has the right object to be accessed by
4683 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4684 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4685 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4687 * fixed bug #334: programmatic addition of slots using specialized
4688 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4689 and :ALLOCATION :CLASS slots.
4690 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4691 float exponents. (rereported by Peter Seibel)
4692 * fixed a bug: #\Space (and other whitespace characters) are no
4693 longer considered to be macro characters in standard syntax by
4694 GET-MACRO-CHARACTER.
4695 * fixed bug: initialization of condition class metaobjects no longer
4696 causes an instance of the condition to be created. (reported by
4698 * fixed bug: it is now possible to have slots such that
4699 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4700 description is neither :INSTANCE nor :CLASS.
4701 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4702 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4703 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4704 non-standard SLOT-DEFINITION-ALLOCATION values.
4705 * fixed bugs: various race conditions handling exiting threads.
4706 CL-PPCRE's thread torture test now passes.
4707 * fixed arguably-a-bug: GC time proportional to number of threads in
4708 system even when most of them are idle
4709 * optimization: improved performance of BIT and SBIT on bit-vectors.
4710 * .fasl file incompatibility: The fasl file version number has
4711 been incremented because of changes associated with package locks.
4713 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4714 * minor incompatible change: the system no longer provides
4715 optimization hints (conditions which are TYPEP
4716 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4717 mode; these hints are still emitted when higher SPEED optimization
4719 * new contrib module: a sampling profiler (profiling by statistical
4720 sampling, rather than by instrumenting functions) is available as
4721 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4722 * the behaviour of the standard function ED is now customizeable by
4723 third parties through a hook variable: see ED's documentation
4724 string for information on the protocol.
4725 * the compiler no longer emits efficiency notes for (FUNCALL X)
4726 when the type of X is uncertain under default optimization
4728 * fixed bug 276: mutating a binding of a specialized parameter to a
4729 method to something that is not TYPEP the specializer is now
4731 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4732 exhibit the required behaviour on the x86 platform. (thanks to
4733 Peter van Eynde, Eric Marsden and Bruno Haible)
4734 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4735 even for difficult arguments. (reported by Peter Graves)
4736 * fixed bug 141a: the backquote printer now descends quoted
4738 * fixed another bug in backquote printing: no more destructive
4739 modification of the form's list structure. (reported by Brian
4741 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4742 move between its address being taken and the call to
4743 interrupt_thread, fixing a crashing race condition.
4744 * the SB-POSIX contrib implementation has been adjusted so that it
4745 no longer exhibits ridiculously poor performance when constructing
4746 instances corresponding to C structs.
4748 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4749 * minor incompatible change: the sb-grovel contrib now treats C
4750 structures as alien (in the sense of SB-ALIEN) objects rather than
4751 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4752 has implications for memory management of client code
4753 (sb-grovel-returned objects must now be manually managed) and for
4754 type safety (alien objects now have full types).
4755 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4756 used to control emission of compiler diagnostics, rather than the
4757 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4758 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4759 quality should be considered deprecated.
4760 * install.sh now installs the user manual as well
4761 * (not quite a new documentable feature, but worth considering in
4762 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4763 beginnings of a semantically meaningful condition hierarchy is
4764 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4766 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4767 designator as the defaults argument.
4768 * fixed bug: Displaced arrays whose displaced-to array has become
4769 too small now cause ARRAY-DIMENSION to signal an error, providing
4770 for safer bounds-checking. (reported by Bruno Haible)
4771 * fixed bug: DEFCLASS slot definitions with identical :READER and
4772 :WRITER names now signal a reasonable error. (reported by Thomas
4774 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4776 * fixed bug: Invalid slot specification errors now print correctly.
4777 (thanks to Zach Beane)
4778 * fixed bug 320: Shared to local slot value transfers in class
4779 redefinitions now happen corrently from superclasses as
4780 well. (reported by Bruno Haible)
4781 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4783 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4784 improper lists correctly. (reported by Bruno Haible)
4785 * fixed bug 313: source-transform for <fun-name> was erroneously
4786 applied to a call of a value of a variable with name <fun-name>.
4787 (reported by Antonio Menezes Leitao)
4788 * fixed bug 307: The obsolete instance protocol ensures that
4789 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4790 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4791 remove dead unknown-values globs from the middle of the stack.
4792 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4793 easier to resume long computations after using *BREAK-ON-SIGNALS*
4794 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4795 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4796 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4797 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4798 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4799 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4801 * fixed a (fairly theoretical) bug in string printing: if
4802 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4803 does not have array-element-type equal to the most general string
4805 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4806 function name. (thanks to Nikodemus Siivola)
4807 * fixed bug: compile-time format string checker failed on
4808 non-closed ~{. (reported by Thomas F Burdick)
4809 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4810 don't warn on legal loop code involving more than one aggregate
4811 boolean. (thanks to Nikodemus Siivola)
4812 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4813 in keyword position to MAKE-PACKAGE was not being reported as
4815 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4816 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4818 * fixed bugs 280 and 312: the checking for multiple definitions in a
4819 file is less likely to become confused by uses of inline
4821 * fixed bug: the #S reader macro performs the keyword coercion
4822 specified for slot names. (reported by Kalle Niemitalo)
4823 * fixed bug: lambda lists may contain symbols whose names start with
4824 & but are not lambda-list-keywords; their occurrence triggers a
4826 * fixed bug 321: define-method-combination argument lambda lists do
4827 not cause invalid code to be generated when &optional or &aux
4828 variables have default values. (reported by Bruno Haible)
4829 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4830 have CLOS classes; this appears also to have fixed reported
4831 instability in stack exhaustion detection.
4832 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4833 MUFFLE-WARNING when no associated restart is present is now
4835 * optimization: rearranged the expansion of various defining macros
4836 so that each expands into only one top-level form in a
4837 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4839 * optimization: used a previously little-used slot in symbols to
4840 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4842 * fixed some bugs revealed by Paul Dietz' test suite:
4843 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4845 ** Fixed an optimization bug related to inheritance of initforms
4846 from local to shared slots.
4847 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4848 ** CAST optimizer forgot to flush argument derived type.
4849 ** print/read consistency on floats is now orders of magnitude
4850 more likely. (thanks also to Bruno Haible for a similar report
4852 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4853 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4854 for objects of type REAL. Make it so.
4855 ** SXHASH is specified (infelicitously) to respect similarity,
4856 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4857 it so. (thanks to Markus Ziegler)
4858 ** on the Alpha, the compiler succeeds in compiling functions
4859 returning a known number of arguments greater than 63.
4860 ** fixed handling of invalid NIL arguments in keyword position
4862 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4864 ** provided a readably-printable representation for RANDOM-STATE
4866 ** ensured that pathnames, where they have a namestring, always
4867 print using #P"..." syntax.
4869 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4870 * Support for the forthcoming 2.0 version of the NetBSD kernel
4871 running on x86 hardware has been added. (thanks to Perry
4872 E. Metzger most immediately, and others for their past work)
4873 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4874 current release version; SBCL's OpenBSD support had been broken
4875 since about the time of OpenBSD's switch to ELF binary format.)
4876 * [placeholder for DX summary]
4877 ** user code with &REST lists declared dynamic-extent, under high
4878 speed or space and low safety and debug optimization policy.
4879 * The manual has been converted to Texinfo format and the debugger
4880 chapter from the cmucl manual has been added.
4881 * A facility has been added to extract documentation strings from
4882 sbcl and store them as Texinfo-formatted snippets for inclusion in
4883 the manual (via Texinfo's @include directive)
4884 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4885 the test case to Dave Roberts)
4886 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4887 pointers. (reported by Sean Ross)
4888 * bug fix: PROFILE output is printed nicely even for large numerical
4889 values. (thanks to Zach Beane)
4890 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4891 greater than 32 handle EOF correctly.
4892 * bug fix: on X86 an immediate argument of the IMUL instruction is
4893 correctly printed in disassembly. (thanks to Lutz Euler)
4894 * bug fix: class slots in redefined classes preserve their old
4895 values. (thanks to Bruno Haible and Nikodemus Siivola)
4896 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4897 succeeds. (reported by Marco Baringer)
4898 * fixed some bugs revealed by Paul Dietz' test suite:
4899 ** READ-SEQUENCE now works on ECHO-STREAMs.
4900 ** RATIONALIZE works more according to its specification. (thanks
4903 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4904 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4905 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4906 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4907 should matter to you only if you rebind the printer control
4908 variables and then find you want different bindings in the
4909 debugger than in the ordinary execution of your program.)
4910 * The runtime build system has been tweaked to support building
4911 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4912 assembler and linker. (thanks to Nikodemus Siivola)
4913 * Unbound, undefined, undeclared variables now trigger full
4914 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4915 more often programmer error than deliberate exploitation of undefined
4917 * optimization: the hash algorithm for strings has changed to one
4918 that is less vulnerable to spurious collisions. (thanks to Juho
4920 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4921 needless bounds checking. (thanks to Juho Snellman)
4922 * optimization: implemented multiplication as a modular
4923 (UNSIGNED-BYTE 32) operation on the PPC backend.
4924 * fixed some bugs revealed by Paul Dietz' test suite:
4925 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4927 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4928 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4929 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4931 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4933 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4935 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4936 their output stream on EOF from read.
4937 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4938 have been read to end-of-file.
4939 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4941 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4942 description of determination of which consecutive characters
4944 ** Printing the "Space" character with escaping on now yields "#\\ ",
4945 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4946 ** Reading floating-point numbers with *READ-BASE* set to a number
4947 less than 10 works correctly.
4948 ** Reading floating-point numbers with *READ-BASE* set to a number
4949 more than 10 works correctly.
4950 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4951 the readtable currently in effect.
4953 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4954 * minor incompatible change: parsing of namestrings on a physical
4955 (Unix) host has changed; numbers after the final #\. in a
4956 namestring are no longer interpreted as a version field. This is
4957 intented to be largely invisible to the user, except that the
4958 meaning of the namestring "*.*.*" has changed: it now refers to a
4959 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4960 should usually be replaced by
4961 (make-pathname :name :wild :type :wild :version :wild)
4962 with the added benefit that this is more likely to be portable.
4963 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4964 option to OPEN now signals an error if the file being opened
4965 exists; this may have an impact on existing code.
4966 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4967 signals received, on the PowerPC platforms (both Linux and
4968 Darwin). (thanks to Pierre Mai for pointing out the location of
4970 * several fixes on OS X: The system now builds and runs cleanly on
4971 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4972 (thanks to Brian Mastenbrook)
4973 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4974 second-resolution: integer multiples of 1/3600 between -24 and 24.
4975 (thanks to Vincent Arkesteijn)
4976 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4977 type when called with 1 argument; PEEK-CHAR checked type of
4978 PEEK-TYPE only after having read first character from a
4979 stream. (reported by Peter Graves)
4980 * bug fix: the garbage collector now has much better locality
4981 behaviour, and in particular no longer treats all memory as being
4982 exhausted when many small objects point to each other in a deeply
4984 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4985 recognized as being TYPEP their class.
4986 * bug fix: the PUSHNEW documentation string has been corrected.
4987 (thanks to Vincent Arkesteijn)
4988 * bug fix: defaulting of the value for the last of an atypically
4989 large number of multiple values being bound was not being
4990 performed correctly on the Alpha or PPC platforms
4991 * optimization: implemented multiplication as a modular
4992 (UNSIGNED-BYTE 32) operation on the x86 backend.
4993 * optimization: SEARCH on simple-base-strings can now be open-coded.
4994 (see also contrib/compiler-extras.lisp for inspiration for
4995 teaching the compiler about the Boyer-Moore algorithm).
4996 * value, returned by MAX (and MIN) called with several EQUALP, but
4997 not EQL, arguments now does not depend on compiler settings.
4998 * fixed some bugs revealed by Paul Dietz' test suite:
4999 ** in stack analysis liveness information is propagated from
5000 non-local entry points.
5001 ** pathwise CAST removing failed when the CAST node did not start
5003 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5004 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5006 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5007 host is already defined.
5008 ** RENAME-FILE works on streams instead of signalling an internal
5010 ** PEEK-CHAR uses the current readtable when determining whether
5011 or not a character is whitespace.
5012 ** MERGE-PATHNAMES handles the case when the pathname does not
5013 specify a name while the default-pathname specifies a version.
5014 ** Pathnames now stand a better chance of respecting print/read
5016 ** Attempting to use standardized file system operators with a
5017 pathname with invalid :DIRECTORY components signals a
5019 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5021 ** DIRECTORY on logical pathnames is more correct.
5022 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5023 signal a TYPE-ERROR if their argument is not a stream.
5024 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5025 designator argument does not designate a stream.
5026 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5027 examining the synonym.
5028 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5030 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5031 element-type larger than ([UN]SIGNED-BYTE 32).
5033 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5034 * When built with the :SB-FUTEX feature, threaded builds now take
5035 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5036 for faster/more reliable mutex and condition variable support.
5037 * Incompatible change (but one you probably shouldn't have been using
5038 anyway): the interface and code for arbitrating between multiple
5039 threads in the same user session has been redesigned.
5040 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5041 error when called without an explicit environment argument.
5042 (thanks to Nikodemus Siivola)
5043 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5044 confused about their position. (thanks to Adam Warner and Gerd
5046 * bug fix: Pretty printing backquoted forms with unquotations in the
5047 argument list position of various code constructs such as LAMBDA
5048 now works correctly. (reported by Paul Dietz)
5049 * bug fix: Pretty printing unquotations no longer loses all
5050 stream position information.
5051 * optimization: performance of string output streams is now less
5052 poor for multiple small sequence writes.
5053 * optimization: performance of CSUBTYPEP in the presence of complex
5054 expressions involving CONS and NOT many times has been improved.
5055 (reported by Paul Dietz)
5056 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5058 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5059 streams for the REPL, for the debugger, and so on. (thanks to
5061 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5062 * fixed some bugs revealed by Paul Dietz' test suite:
5063 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5064 is ignored if it is too small, rather than propagating through
5065 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5066 ** extremely complex negations of CONS types were not being
5067 sufficiently canonicalized, leading to inconsistencies in
5069 ** VALUES tranformer lost derived type.
5071 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5072 * fixed a bootstrapping bug: the build process no longer assumes
5073 that the various BOOLE-related constants have the same value in
5074 host and target lisps. (noted by Paul Dietz' test suite on an
5075 SBCL binary built from CLISP)
5076 * The system can now be dynamically linked on the MIPS platform,
5077 which enables dynamic loading of foreign code from Lisp. (thanks
5078 to Ralf Baechle for discussions on the MIPS ABI)
5079 * The system now records debugging information for its own source
5080 files in a filesystem-position-independent manner, relative to
5081 the "SYS" logical host.
5082 * fixed a compiler bug: MV-LET convertion did not check references
5083 to the "max args" entry point. (reported by Brian Downing)
5084 * tweaked disassembly notes to be less confident about proclaiming
5085 some instruction as an LRA. (thanks to Brian Downing)
5086 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5087 now each have their own history, command character, and other
5088 characteristics. (thanks to David Lichteblau)
5089 * fixed some bugs revealed by Paul Dietz' test suite:
5090 ** compiler failure in compiling LOGAND expressions including a
5092 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5093 shift greater than 32.
5094 ** FLUSH-DEST did not mark blocks for type check regeneration.
5095 ** HANDLER-CASE failed to accept declarations in handler clauses
5096 in some circumstances.
5098 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5099 * New code in contrib/sb-introspect (still probably not entirely
5100 stable yet) provides some support for smart Lisp development
5101 environments like SLIME.
5102 * The conditions signalled for errors occurring when loading .fasl
5103 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5104 in a way which should help ASDF recover gracefully.
5105 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5106 stuff has been cleaned up. If you code contrib/ stuff, this might
5107 affect you, and you can look at contrib/README, contrib/STANDARDS,
5108 and/or the 0.8.4.27 diff to check.
5109 * In full calls the compiler now does not generate checks for declared
5110 argument types for all arguments.
5111 * various threading fixes
5112 ** and some experimental patches which didn't make it into
5113 the main tree for this release, but which are shipped in
5114 contrib/experimental-thread.patch as a possible fix for some
5115 failures (deadlock, spinning...) in GC-intensive multithreaded
5117 * fixed PPC build problem (source code incompatibility of different
5118 library versions): added offsetof() hackery which attempts to divine
5119 where glibc maintainers put uc_mcontext today
5120 * fixed bug 282: compiler does not trust type assertions while passing
5121 arguments to a full call.
5122 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5123 &OPTIONAL VALUES type parameter.
5124 * fix bug 214: algorithm for noting rejected templates is now more
5125 similar to that of template seletion. (also reported by rydis on
5127 * fixed bug 141b: printing backquoted information readably and prettily
5128 inserts a space where necessary.
5129 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5130 (CHARACTER 10) are now reported as errors, rather than propagated
5131 as unknown types. (reported by piso on #lisp)
5132 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5133 with values NIL and :ERROR. (thanks to Milan Zamazal)
5134 * fixed bug 191c: CLOS now does proper keyword argument checking as
5135 described in CLHS 7.6.5 and 7.6.5.1.
5136 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5137 longer raise an error; further, using a list as a for-as-arithmetic
5138 counter now raises a meaningful error.
5139 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5140 now understood by sequence creation functions such as MAKE-SEQUENCE
5142 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5143 a STRING-INPUT-STREAM.
5144 * compiler enhancement: SIGNUM is now better able to derive the type
5146 * type declarations inside WITH-SLOTS are checked. (reported by
5148 * fixed some bugs revealed by Paul Dietz' test suite:
5149 ** incorrect optimization of TRUNCATE for a positive first
5150 argument and negative second.
5151 ** compiler failure in let-convertion during flushing dead code.
5152 ** compiler failure while deriving type of TRUNCATE on an
5153 interval, containing 0.
5154 ** ASH of a negative bignum by a negative bignum count now returns
5156 ** intersection of CONS types now canonicalizes properly, fixing
5157 inconsistencies in SUBTYPEP.
5159 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5160 * incompatible change: The --disable-debugger command line
5161 option now clobbers the debugger at a more fundamental
5162 level, by redefining #'INVOKE-DEBUGGER instead of by
5163 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5164 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5165 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5166 enter the debugger REPL and then suffer recursive errors
5167 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5168 while under the new system, BREAK in --disable-debugger mode
5169 terminates the system just as an unhandled error would.
5170 * fixed compiler performance when processing loops with a step >1;
5171 * bug fix: DOCUMENTATION now retrieves generic function
5172 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5173 support has been systematized, and now supports the methods
5174 specified by ANSI, along with a default method and a method for
5175 slot documentation. (reported by Nathan Froyd)
5176 * bug fix: effective methods associated with a generic function are
5177 no longer cached over a change of that generic function's method
5178 combination. (reported by Andreas Fuchs)
5179 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5180 names a non-existent directory. (thanks to Andreas Fuchs)
5181 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5182 the PPC platform, lead to stack corruption; this has been fixed.
5183 (reported by Rainer Joswig)
5184 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5185 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5186 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5187 arithmetic in general, is now much more reliable on the PPC
5189 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5190 platform now returns the right answer.
5191 * optimization: restored some effective method precomputation in
5192 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5193 precomputation is now tunable.
5194 * optimization: compiler-internal data structure use has been
5195 reviewed, and changes have been made that should improve the
5196 performance of the compiler by about 20%.
5197 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5198 simple-base-strings and simple-bit-vectors is improved.
5199 * optimization: the optimization of 32-bit logical and arithmetic
5200 functions introduced in version 0.8.3 on the x86 has been
5201 implemented on the mips, ppc and sparc platforms; an
5202 implementation of the same facility, but for 64-bit arithmetic,
5203 has been added for the alpha.
5204 * microoptimization: the compiler is better able to make use of the
5205 x86 LEA instruction for multiplication by constants.
5206 * bug fix: in some situations compiler did not report usage of
5207 generic arithmetic in (SPEED 3) policy.
5208 * bug 145b fix: compiler used wrong type specifier while converting
5209 MEMBER-types to numeric.
5210 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5212 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5213 index argument now works properly on the Alpha platform.
5214 * bug fix: floating point exception treatment on the Alpha platform
5216 * bug fix: FILE-POSITION works much better on string input and
5217 output streams. (thanks to Nikodemus Siivola)
5218 * bug fix: many threading/garbage collection symptoms sorted.
5219 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5220 might be pseudo-atomic.
5221 * internal change: Stopping for GC is now done with signals not
5222 ptrace. GC is now done in whichever thread wanted it, instead of
5224 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5226 * bug fix: result form in DO is not contained in the implicit
5228 * incompatible change: ICR structure is changed; the value part of
5229 CONTINUATION is now called LVAR; corresponding functions are
5230 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5231 * added type deriver for ISQRT (thanks to Robert E. Brown).
5232 * bug fix: better support for loading from the command line when an
5233 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5235 * fixed some bugs revealed by Paul Dietz' test suite:
5236 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5237 ** ROUND and FROUND now give the right answer when given very
5238 small float arguments.
5239 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5241 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5242 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5243 ** LCM should return a non-negative integer.
5244 ** PARSE-INTEGER returned the index of a terminator instead of the
5245 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5246 ** PARSE-INTEGER returned an incorrect index being applied to a
5248 ** LCM with two arguments of 0 returns 0 rather than signalling
5250 ** unsigned addition of a 32-bit constant with the high bit set no
5251 longer causes an internal compiler error on the x86.
5252 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5253 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5254 with negative last argument.
5255 ** byte specifiers with zero size and position no longer cause
5256 an error during type derivation.
5257 ** bignum multiplication on the Alpha platform now returns the
5259 * porting: The system now builds on SuSE AMD64, although it still
5260 generates a 32-bit binary.
5261 * .fasl file incompatibility: The fasl file version number has
5262 been incremented (because of the changes to internal compiler
5263 data structures referred to above).
5265 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5266 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5267 more accurately, on the Darwin kernel running on PowerPC hardware.
5268 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5269 * Compiler code deletion notes now signal a condition of type
5270 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5271 an associated MUFFLE-WARNING restart.
5272 * The compiler now performs limited argument count validation of
5273 constant format strings in FORMAT, and where appropriate in ERROR,
5274 CERROR and WARN. (thanks to Gerd Moellmann)
5275 * New ASDF-INSTALL contrib can be used for automatic download and
5276 installation of third-party Lisp code from CCLAN or other sites
5278 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5279 which forces another thread to execute a function supplied by the
5281 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5282 now accept and act upon their :ELEMENT-TYPE keyword argument.
5283 (reported by Martin Atzmueller, Edi Weitz)
5284 * bug fix: FILE-POSITION now accepts position designators up to
5285 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5286 is the greater. (thanks to Patrik Nordebo)
5287 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5288 Kalle Olavi Niemitalo)
5289 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5290 printable. (reported by Eric Marsden)
5291 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5292 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5293 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5294 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5295 (thanks to Stig Sandoe)
5296 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5297 UNREAD-CHAR now correctly includes the unread character in the
5298 target sequence. (thanks to Gerd Moellmann)
5299 * bug fix in threaded builds: the system can now be suspended and
5300 resumed by shell job control with minimal disruption.
5301 * bug fixes in times and timezones >2038AD
5302 * better handling of "where is GNU make?" problem in build scripts
5303 (thanks to Nikodemus Siivola)
5304 * new optimization: inside a named function any reference to a
5305 function with the same name is considered to be a self-reference;
5306 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5307 optimization quality.
5308 * new optimization on x86: logical functions and + now have
5309 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5310 used when the result is truncated to 32 bits.
5311 * VALUES declaration is partially enabled.
5312 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5313 * fixed some bugs revealed by Paul Dietz' test suite:
5314 ** The system now obeys the constraint imposed by
5315 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5316 types form a lattice under type intersection.
5317 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5318 ** ASSOC now ignores NIL elements in an alist.
5319 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5320 and (1+ MOST-POSITIVE-FIXNUM) answers.
5321 ** The addition of a method with invalid qualifiers to a generic
5322 function does not cause an error to be signalled immediately;
5323 a warning is signalled, and the error is generated only on
5324 calling the generic function.
5325 * changed .fasl file version number, in part to add type codes for
5326 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5327 obscure ANSI requirements
5329 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5330 * fixed bug 148: failure to inline-expand a local function left
5331 garbage, confusing the compiler.
5332 * fixed bugs 3cd: structure slot readers perform type check if the
5333 slot can have an invalid value (i.e. it is either not initialized
5334 or can be written with a less specific slot writer).
5335 * bug fix: the compiler now traps array references to elements off
5336 the end of an array; previously, the bounds checking in some
5337 circumstances could go off-by-one.
5338 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5340 * type declarations for array element types now obey the description
5341 on the CLHS page "Declaration TYPE", as per discussions on
5342 sbcl-help around 2003-05-08. This means that a declaration
5343 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5344 declaration, all references to BAR will be asserted or assumed
5345 (with THE, so dependent on compiler policy) to involve objects of
5346 type FOO. Note that no such declaration is implied in
5347 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5348 * declared types of functions from the "Conditions"
5349 chapter. (reported by Paul Dietz)
5350 * bug fix: CERROR accepts a function as its first argument.
5351 * bug fix: NTH an NTHCDR accept a bignum as index
5352 arguments. (reported by Adam Warner)
5353 * optimization: character compare routines now optimize comparing
5354 against a constant character. (reported by Gilbert Baumann)
5355 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5356 argument now works properly on the MIPS platform.
5357 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5358 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5359 declared to have a functional type, does not cause an error
5361 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5362 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5363 * fixed bug: if last continuation of a deleted block has a
5364 destination, this destination should be deleted too. (reported by
5366 * fixed a bug in the bootstrap process: the host compiler's values
5367 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5368 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5369 test case from Patrik Nordebo)
5370 * improved the ability of the disassembler on the PPC platform to
5371 provide helpful disassembly notes.
5372 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5373 the class in more cases than previously.
5374 * bug fix: FILE-POSITION now understands :START and :END for
5375 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5376 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5377 8) data. (thanks to David Lichteblau)
5378 * bug fix: it is possible to add a method to a generic function
5379 without lambda list.
5380 * bug fix: reader failed to signal END-OF-FILE inside an
5381 object representation. (reported by Nikodemus Siivola)
5382 * fixed some bugs revealed by Paul Dietz' test suite:
5383 ** LAST and [N]BUTLAST should accept a bignum.
5384 ** condition slot accessors are methods.
5385 ** (VECTOR NIL) is a subtype of STRING.
5387 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5388 * minor incompatible change: some nonsensical specialized lambda
5389 lists (used in DEFMETHOD) which were previously ignored now signal
5391 * minor incompatible change: the system is now aware of the types of
5392 variables in the COMMON-LISP package, and will signal errors for
5393 most violations of these type constraints (where previously they
5394 were silently accepted).
5395 * minor incompatible change: COMPILE-FILE now uses the freedom
5396 afforded (ANSI 3.2.2.3) to use derived function types for
5397 functions defined in the same file. This also permits the system
5398 to warn on static type mismatches and function
5399 redefinition. (Currently it does not work with high DEBUG level.)
5400 * minor incompatible change: VALUES declaration is disabled.
5401 * When issuing notes, the compiler now signals a condition of type
5402 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5403 restart for use in user handlers. It is expected that the
5404 COMPILER-NOTE condition will eventually become a condition
5405 supertype to a hierarchy of note types, which will then be
5406 handleable in a similar fashion. However, at the moment, no such
5407 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5408 but it's an implementation detail, not a classification for the
5410 * Changes in type checking closed the following bugs:
5411 ** type checking of unused values (192b, 194d, 203);
5412 ** template selection based on unsafe type assertions (192c, 236);
5413 ** type checking in branches (194bc).
5414 * A short form of VALUES type specifier has ANSI meaning (it has
5415 increased the number of situations when SBCL cannot perform type
5417 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5418 keywords or constants is permissible.
5419 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5420 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5421 classes. (thanks to Antonio Martinez)
5422 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5423 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5424 argument to a pretty-print stream. Instead, it leaves any such
5425 operations to DESCRIBE-OBJECT methods.
5426 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5428 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5429 lambda lists. (thanks to David Lichteblau)
5430 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5431 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5432 (thanks to Gerd Moellmann)
5433 * fixed bug 246: increased compilation speed of long
5434 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5436 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5438 * DEFCONSTANT now throws a condition of type
5439 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5440 constant to a non-EQL value; CONTINUE and ABORT restarts
5441 respectively change and preserve the value.
5442 * fixed bug 63: The code walker, part of the implementation of CLOS,
5443 is now better at handling symbol macros.
5444 * bug fix: There is no longer an internal implementation type named
5445 CL:LENGTH. (reported by Raymond Toy)
5446 * bug fix: In macro-like defining macros/special operators the
5447 implicit block does not enclose the lambda list.
5448 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5449 enclosed in parentheses) are not suitable as type specifiers, and
5450 their use properly signals an error now.
5451 * bug fix: An argument count mismatch for a type specifier in code
5452 being compiled no longer causes an unhandled error at compile
5453 time, but signals a compile-time warning.
5454 * fixed simple vector readable printing
5455 * bug fix: DESCRIBE takes more care over whether the class
5456 precedence list slot of a class is bound before accessing it.
5457 (reported by Markus Krummenacker)
5458 * bug fix: FORMATTER can successfully compile pretty-printer format
5459 strings which use variants of the ~* directive inside.
5460 * bug fix: SEARCH now applies its TEST predicate to the elements of
5461 the arguments in the correct order. (thanks to Wolfhard Buss)
5462 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5463 in type inference. (thanks to Robert E. Brown)
5464 * bug fix: Reading in symbols with an explicit package name of ""
5465 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5466 * fixed some bugs revealed by Paul Dietz' test suite:
5467 ** NIL is now allowed as a structure slot name.
5468 ** Arbitrary numbers, not just REALs, are allowed in certain
5469 circumstances in LOOP for-as-arithmetic clauses.
5470 ** Multiple class redefinitions before slot access no longer
5471 causes a type error.
5472 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5473 association between the name and a class.
5474 ** Generic functions with non-standard method-combination and over
5475 five methods all of which return constants no longer return NIL
5476 after the first few invocations. (thanks to Gerd Moellmann)
5477 ** CALL-NEXT-METHOD with no arguments now passes the original
5478 values of the arguments, even in the presence of assignment.
5479 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5481 ** DISASSEMBLE works with closures and funcallable instances.
5482 ** ADD-METHOD now returns the generic function, not the new method.
5483 ** FIND-METHOD signals an error if the lengths of the specializers
5484 is incompatible with the generic function, even if the ERRORP
5486 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5487 which its argument is a member.
5488 ** DEFCLASS only redefines the class named by its class-name
5489 argument if that name is the proper name of the class;
5490 otherwise, it creates a new class.
5491 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5492 of the UNBOUND-SLOT condition to the name of the slot.
5493 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5494 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5495 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5496 SLOT-MAKUNBOUND in the specified fashion.
5498 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5499 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5500 cross-compilation host. As a consequence, we can now bootstrap our
5501 way up to SBCL starting with a bare gcc toolchain and human-readable
5502 source code (first the source to CLISP, then the source to SBCL).
5503 * A contributed module containing a partial implementation of the
5504 simple-streams interface has been included. (thanks to Rudi
5506 * A contributed module implementing the RFC1321 Message Digest
5507 Algorithm, known as MD5, has been included.
5508 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5509 no longer has any effect, as the code controlled by this feature
5510 has been deleted. (As far as we know, no-one has ever built using
5511 this feature, and its semantics were confused in any case).
5512 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5513 work on conditions (as required by the ANSI specification),
5514 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5515 expected behaviour on conditions. Users should note, however,
5516 that such behaviour is not required by the ANSI specification,
5517 and so use of this behaviour may render their code unportable.
5518 * fixed some bugs revealed by Paul Dietz' test suite:
5519 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5521 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5522 ** SXHASH on condition objects no longer returns NIL.
5523 ** :ALLOCATION :CLASS slots are better treated; their values are
5524 updated on class redefinition, and initforms inherited from
5525 superclasses are applied.
5526 ** REMOVE-METHOD returns its generic function argument even when
5527 no method was removed.
5528 ** SHARED-INITIALIZE now initializes the values of the requested
5529 slots, including those with :ALLOCATION :CLASS.
5530 ** ALLOCATE-INSTANCE now works on structure classes defined via
5531 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5533 ** SLOT-EXISTS-P now works on conditions, as well as structures
5535 ** MAKE-LOAD-FORM now has the required methods on
5536 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5537 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5538 keyword, and now implements the SLOT-NAMES argument.
5539 ** methods with &OPTIONAL arguments no longer allow too many
5540 arguments to be passed in the call without error.
5541 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5542 option is consistent with the required arguments of the generic
5543 function lambda list.
5544 * bug fix: REQUIRE accepts a string designator. (Thanks to
5546 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5547 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5548 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5549 * bug fix: The compiler now checks for duplicated variables in macro
5551 * bug fix: SETQ on globals returns the correct value.
5552 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5553 not a COMPILER-ERROR (followed by some other strange error on
5554 choosing the CONTINUE restart).
5555 * bug fix: make.sh and friends are now more consistent in the way that
5556 they look for GNU "make".
5558 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5559 * experimental native threads support (on x86 Linux >=2.4 only).
5560 This is not compiled in by default: you need to add :SB-THREAD to
5561 the target features. See the "Beyond ANSI" chapter of the manual
5563 * fix for longstanding nonANSIism: The old distinction between
5564 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5565 The return value from CL:FIND-CLASS is now a CLOS class, and
5566 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5567 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5568 * An interface to the MetaObject Protocol, as described in Kiczales,
5569 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5570 MIT Press, 1991, is available from the SB-MOP package.
5571 * incompatible change: the SB-PCL package should now be considered
5572 a private implementation detail, and no longer a semi-private MOP
5574 * minor incompatible change: due to rearrangement for threads, the
5575 control stack and binding stack are now allocated at arbitrary
5576 addresses instead of being hardcoded per-port. Users affected by
5577 this probably have to be doing advanced things with shared
5578 libraries, and will know who they are.
5579 * minor incompatible change: Previously, all --eval forms used were
5580 processed with READ before any of them were processed with EVAL.
5581 Now each --eval form is processed with both READ and EVAL before
5582 the next --eval form is processed. (Thus package operations like
5583 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5584 work as the user might reasonably expect.)
5585 * minor incompatible change: *STANDARD-INPUT* is now only an
5586 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5588 * minor incompatible change: Y-OR-N-P is now character-oriented,
5589 not line oriented. Also, YES-OR-NO-P now works without errors.
5590 (thanks to Antonio Martinez)
5591 * sb-aclrepl module improvements: an integrated inspector, added
5592 repl features, and a bug fix to :trace command.
5593 * Known functions, which cannot be open coded by the backend, are
5594 considered to be able to check types of their arguments. (fixing
5595 a bug report by Nathan J. Froyd)
5596 * fixed a bug in computing method discriminating functions: It is
5597 now possible to define methods specialized on classes which have
5598 forward-referenced superclasses. (thanks to Gerd Moellmann)
5599 * fixed evaluation order in optional entries (reported by Gilbert
5601 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5602 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5603 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5604 required-by-AMOP NAME argument, as well as CLASS and
5605 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5606 * fixed bug 20: DEFMETHOD can define methods using names that are
5607 not the proper names of classes to designate class specializers.
5608 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5609 Unix file descriptors, instead of blowing up. (thanks to Antonio
5611 * Garbage collection refactoring: user-visible change is that a
5612 call to the GC function during WITHOUT-GCING will not do garbage
5613 collection until the end of the WITHOUT-GCING. If you were doing
5614 this you were probably losing anyway.
5615 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5616 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5617 TYPEP the latter but not the former.
5618 * The compiler issues a full WARNING for calls to undefined functions
5619 with names from the CL package.
5620 * MAP-INTO for a vector destination is open coded. (reported by
5621 Brian Downing on c.l.l)
5622 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5623 documentation string.
5624 * fixed some bugs revealed by Paul Dietz' test suite:
5625 ** COPY-ALIST now signals an error if its argument is a dotted
5627 ** Condition slots are now accessed more correctly in the presence
5628 of multiple initargs for a given slot.
5629 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5630 exclude restarts of the same name associated with a different
5632 ** DEFCLASS of forward-referenced classes with another
5633 forward-referenced class in the superclasses list no longer
5635 ** Condition slots are now initialized once each, not multiple
5636 times. (thanks to Gerd Moellmann)
5637 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5639 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5640 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5641 arguments contain duplicated elements.
5642 ** RESTART-CASE understands local macros.
5643 ** RESTART-CASE associates exactly its own restarts with a condition.
5644 ** ENDP in safe mode checks its argument to be of type LIST.
5645 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5646 in question is unbound.
5647 ** Optimized MAKE-INSTANCE functions no longer cause internal
5648 assertion failures in the presence of duplicate initargs.
5649 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5650 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5651 propagated even in the ctor optimized implementation of
5653 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5655 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5656 * a better implementation of SXHASH on (simple) bit vectors,
5657 measured both in execution speed and in distribution of results
5658 over the positive fixnums, has been installed. Likewise, a better
5659 implementation of EQUAL for simple bit vectors is now available.
5660 * fixed CEILING optimization for a divisor of form 2^k.
5661 * fixed bug 240 (emitting extra style warnings "using the lexical
5662 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5663 by Antonio Martinez)
5664 * fixed SXHASH, giving different results for NIL depending on type
5665 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5666 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5667 variable. (found by Rolf Wester)
5668 * SBCL does not ignore type declarations for special
5669 variables. (reported by rif on c.l.l 2003-03-05)
5670 * some bug fixes in contrib/sb-aclrepl/
5671 * fixed some bugs revealed by Paul Dietz' test suite:
5672 ** a bug in the CONS type specifier, whereby the CAR and CDR
5673 types got intertwined, has been fixed;
5674 ** the type system is now able to reason about the interaction
5675 between INTEGER and RATIO types more completely;
5676 ** APPEND, [N]REVERSE and NRECONC check that those their
5677 arguments, which must be proper lists, are really so;
5678 ** An array specialized to be unable to hold elements has been
5679 implemented, as required -- yes, really -- by ANSI;
5680 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5681 on malformed property lists;
5683 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5684 * incompatible packaging change: in line with Unix convention,
5685 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5686 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5687 * REQUIRE and PROVIDE are now optionally capable of doing something
5688 useful. See the documentation string for REQUIRE.
5689 * infrastructure for a managed SBCL contrib system: contributed
5690 modules in this release include:
5691 ** the ASDF system definition facility;
5692 ** an interface to the BSD Sockets API;
5693 ** an ACL-like convenience interface to the repl;
5694 (thanks to Kevin Rosenberg)
5695 ** an implementation of ROTATE-BYTE, with efficient implementation
5697 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5698 gives a closer approximation to the right answer than previously.
5699 (thanks to Raymond Toy)
5700 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5701 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5702 optional environment arguments, as required by ANSI.
5703 * fixed bugs in other functions taking environment objects, allowing
5704 calls with an explicit NIL environment argument to be compiled
5706 * fixed bug 228: primary return values from
5707 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5708 COMPILE or FUNCTION.
5709 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5710 :TYPE will no longer signal errors on innocuous objects.
5711 * fixed bug 231b: SETQ is better at respecting type declarations in
5712 the lexical environment.
5713 * fixed a bug in DEFCLASS: classes named by symbols with no or
5714 unprintable packages can now be defined.
5715 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5716 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5717 * fixed compiler failure related to checking types of functions.
5718 (reported by Robert E. Brown)
5719 * the compiler is now much more consistent in its error-checking
5720 treatment of bounding index arguments to sequence functions: in
5721 (SAFETY 3) code, errors will be signalled in almost all cases if
5722 invalid sequence bounding indices are passed to functions defined
5723 by ANSI to operate on sequences.
5724 * fixed a bug in the build procedure: documentation of SBCL-specific
5725 packages is now preserved and available in the final Lisp image.
5726 * lifted FDEFINITION lookup out of loops in the implementation of
5727 many list operations. (thanks to Robert E. Brown)
5728 * fixed a bug in the reader: the #n# reader macro now works for
5729 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5730 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5731 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5732 E. Brown and Tony Martinez respectively)
5733 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5734 SLOT-BOUNDP: in particular, it is now able to optimize them much
5735 better, and is now not vulnerable to having packages renamed.
5736 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5737 always called when a slot is not present in an instance. (thanks
5739 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5740 longer signal an error on unreading a character following EOF on
5741 the previous constituent stream. (thanks to Tony Martinez)
5742 * fixed some bugs revealed by Paul Dietz' test suite:
5743 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5744 not just nonnegative fixnums;
5745 ** the logical bit-array operators such as BIT-AND now accept an
5746 explicit NIL for their "opt-arg" argument (to indicate a
5747 freshly-consed result bit-array);
5748 ** ELT now signals an error on an invalid sequence index in safe
5750 ** the type system is now cleverer about negations of numeric
5751 types, and consequently understands the BIGNUM and RATIO types
5753 ** the type system is now cleverer about the interaction between
5754 INTEGER and RATIO types: while bugs still remain, many more
5755 cases are accurately computed;
5756 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5757 if it is in the last clause;
5758 ** CONSTANTLY now correctly returns a side-effect-free function in
5760 ** DECLARE is no longer treated as a special-operator; in
5761 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5762 * incremented fasl file version number due to the change in the
5763 DEFSTRUCT-SLOT-DESCRIPTION structure.
5765 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5766 * minor incompatible change: code processed by the "interpreter" or
5767 EVAL now has a compilation optimization policy of (DEBUG 2)
5768 (changed from (DEBUG 1)) to improve debuggability of interactive
5769 development, and to allow the use of the debug RETURN command in
5771 * an experimental implementation of the RETURN command for the
5772 debugger has been included. (thanks to Frederik Kuivinen)
5773 * fixed bug 62: constraints were not propagated into a loop.
5774 * fixed bug in embedded calls of SORT (reported and investigated by
5776 * fixed some bugs revealed by Paul Dietz' test suite:
5777 ** printing and reading of arrays with some dimensions having
5778 length 0 (thanks to Gerd Moellmann);
5779 ** BOA constructor with &AUX argument without a default value does
5780 not cause a type error;
5781 ** CONSTANTP now returns true for all self-evaluating objects.
5783 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5784 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5785 accessors that are related by inheritance, as specified in the
5786 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5787 Valtteri Vuorikoski)
5788 * The compiler is now able to inline functions that were defined in
5789 a complex lexical environment (e.g. inside a MACROLET).
5790 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5792 * Support for the upcoming FreeBSD-5.0 release has been included.
5793 (thanks to Dag-Erling Smorgrav)
5794 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5795 effect when it is not in a toplevel context.
5796 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5797 stand a better chance of being correct. (thanks to Gerd
5799 * fixed bug in COERCE, which now signals an error on coercing a
5800 rational to a bounded real type which excludes the expected
5802 * The compiler is now able to derive types more accurately from the
5803 COERCE and COMPILE functions.
5804 * fixed bug 223: functional binding is considered to be constant
5805 only for symbols in the CL package.
5806 * fixed bug 231: SETQ did not check the type of a variable being set
5807 (reported by Robert E. Brown)
5808 * A new optimization for MAKE-INSTANCE has been included, fixing
5809 various bugs (including relating to :ALLOCATION :CLASS slots and
5810 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5812 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5813 ** As required by ANSI, LOOP now disallows anonymous collection
5814 clauses such as COLLECT I in conjunction with aggregate boolean
5815 clauses such as THEREIS (= I 1);
5816 ** LOOP now signals an error when any variable is reused in the
5817 same loop (including the potentially useful construct analogous
5818 to WITH A = 1 WITH A = (1+ A);
5819 ** IT is only a special loop symbol within the first clause of a
5820 conditional loop clause;
5821 ** LOOP with a typed iteration variable over a hashtable now
5822 signals a type error iff it should.
5823 * fixed some other bugs revealed by Paul Dietz' test suite:
5824 ** FILE-STREAM now names the class previously known as FD-STREAM;
5825 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5826 argument) no longer signals an error;
5827 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5828 of the slot symbol, rather than using the current package
5829 ((:CONC-NAME "") continues to intern the slot's name in the
5831 * incremented fasl file version number, because of the incompatible
5832 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5833 of the new implementation of DEFINE-COMPILER-MACRO.
5835 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5836 * Support for building SBCL for MIPS platforms running in
5837 little-endian mode has now been checked in, and basic
5838 functionality on said platforms verified.
5839 * minor incompatible change: PCL now records the pathname of a file
5840 in which methods and the like are defined, rather than its
5842 * minor incompatible change: TRUENAME now considers the truename of
5843 a file naming a directory to be the pathname with :DIRECTORY
5844 component indicating that directory.
5845 * minor incompatible change: a NAMED clause in the extended form of
5846 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5847 reason for the previous behaviour is unclear.
5848 * more systematization and improvement of CLOS and MOP conformance
5849 in PCL (thanks to Gerd Moellman and Pierre Mai):
5850 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5852 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5853 primary methods with no specializers;
5854 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5856 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5857 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5858 FORWARD-REFERENCED-CLASSes; error reporting on
5859 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5861 ** SXHASH on CLOS instances now uses a slot internal to the
5862 instance to return different numbers on distinct instances,
5863 while preserving the same return value through invocations of
5865 ** DEFMETHOD signals errors when methods with longer incongruent
5866 lambda lists are added to generic functions;
5867 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5868 CLASS, as specified in AMOP;
5869 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5870 on the order returned by the primary method for classes of
5871 class STANDARD-CLASS;
5872 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5873 * fixed some bugs shown by Paul Dietz' test suite:
5874 ** DOLIST puts its body in TAGBODY;
5875 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5877 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5878 value producing form;
5879 ** if more variables are given to PROGV than values, extra
5880 variables are bound and made to have no value;
5881 ** NSUBSTITUTE on list arguments gets the right answer with
5883 ** ELT signals an error of type TYPE-ERROR when the index argument
5884 is not a valid sequence index;
5885 ** LOOP signals (at macroexpansion time) an error of type
5886 PROGRAM-ERROR when duplicate variable names are found;
5887 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5888 ** FUNCALL of special-operators now cause an error of type
5890 ** PSETQ now works as required in the presence of side-effecting
5891 symbol-macro places;
5892 ** NCONC accepts any object as its last argument;
5893 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5895 ** loop-for-as-package does not require a package to be explicitely
5897 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5899 * fixed bug 166: compiler preserves "there is a way to go"
5900 invariant when deleting code.
5901 * fixed bug 172: macro lambda lists with required arguments after
5902 &REST arguments now cause an error to be signalled. (thanks to
5904 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5905 bug. (thanks to Matthew Danish)
5906 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5908 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5909 arguments are lexically rebound. (thanks to Gerd Moellmann and
5911 * fixed bug 194: error messages are now more informative when there
5912 is no primary method applicable in a call to a generic
5913 function. (thanks to Gerd Moellmann)
5914 * fixed bug in command line argument checking (thanks to Julian
5916 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5917 (thanks to Matthew Danish)
5918 * incremented fasl file version number, because of the
5919 SXHASH-related changes in the layout of CLOS data structures
5921 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5922 * minor incompatible change: The runtime (the Unix executable named
5923 "sbcl") is now much pickier about the .core files it will load.
5924 Essentially it now requires .core files to descend from the same
5925 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5926 as the runtime does. (The intent is to prevent the crashes which
5927 can occur, and which can even be reported as mysterious failures,
5928 when people patch the sources or change the build parameters
5929 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5930 sbcl and .core files.)
5931 * fixed bug: VALUES-LIST is no longer optimized away.
5932 * fixed bug 142: The FFI conversion of C string values to Lisp
5933 string values no longer conses excessively. (thanks to Nathan
5934 Froyd porting Raymond Toy's fix to CMU CL)
5935 * began to systematize and improve MOP conformance in PCL (thanks to
5936 Nathan Froyd, Gerd Moellman and Pierre Mai):
5937 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5939 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5940 ** FINALIZE-INHERITANCE is now called on class finalization;
5941 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5942 argument precedence order.
5943 * fixed bug 202: The compiler no longer fails on functions whose
5944 derived types contradict their declared type.
5945 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5946 so it can be non-toplevel.
5947 * The fasl file version number has changed (because of the new
5948 implementation of DEFMACRO).
5949 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5950 safe code, that any length requirement by their type-specifier
5951 argument is valid. The exceptions to this are described in bug
5953 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5954 functions now check the types of their inputs as required by ANSI.
5955 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5956 introduced symbol is DECLAREd to be SPECIAL.
5957 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5958 * fixed bug: :COUNT argument to sequence functions may be negative
5959 * fixed bug: body of DO-SYMBOLS may contain declarations
5960 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5961 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5962 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5963 symbol macro only once
5964 * fixed printing of call frame when argument list is unavailable
5965 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5966 * compiler no longer signals WARNING on unknown keyword
5969 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5970 * A beta-quality port to the mips architecture running Linux,
5971 based on the old CMUCL backend, has been made. It has been tested
5972 on a big-endian kernel, and works sufficiently well to be able to
5973 rebuild itself; it has not been tested in little-endian mode.
5974 * fixed an inconsistency between gencgc.c and purify.c which made
5975 dumping/loading .core files unreliable
5976 * fixed bug 120a: The compiler now deals correctly with IFs where
5977 the consequent is the same as the alternative, instead of
5978 misderiving the return type. (thanks to Alexey Dejneka)
5979 * fixed bug 113: Logical pathnames are now dumpable (the logical
5980 host is resolved at load-time, throwing an error if it is not
5982 * fixed bug 174: FORMAT's error message is slightly clearer when a
5983 non-printing character is used in a format directive.
5984 * fixed several bugs in compiler checking of type declarations, i.e.
5985 violations of the Python "declarations are assertions" principle
5986 (thanks to Alexey Dejneka)
5987 * fixed several bugs in PCL's error checking (thanks to Gerd
5989 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5991 * fixed bug in compilation of functions as first class values
5992 (thanks to Antonio Martinez-Shotton)
5993 * The compiler's handling TYPE-ERRORs which it can prove will
5994 inevitably happen at runtime has been cleaned up and corrected
5995 in several ways. (thanks to Alexey Dejneka)
5996 * improved argument type checking for various basic arithmetic
5997 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5998 lavished on them in the past that they can be compiled in many
5999 ways in different special cases
6000 * fixed bug 181: compiler checks validity of user supplied type
6002 * cleaned up code flushing in optimization: Function calls which
6003 should signal errors for safety purposes (e.g. which ANSI says
6004 should signal errors when their arguments are of incorrect type)
6005 are no longer optimized away.
6006 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6007 * incremented fasl file version number, because changes in the
6008 implementation of sequence functions like COERCE caused
6009 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6010 in old inline expansions) to become undefined. (Actually these
6011 changes were later undone, so we might very well be binary
6012 compatible with 0.7.7 after all, but leaving the version number
6013 incremented seemed like the simplest and most conservative
6016 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6017 * An alpha-quality port to the parisc architecture running Linux,
6018 based on the old CMUCL backend, has been made. This, even more so
6019 than the other backends, should be considered still a work in
6020 progress; known problems include that the Linux kernel in 64-bit
6021 mode does not propagate the correct sigcontext structure to
6022 userspace, and consequently SBCL on a parisc64 kernel will not
6024 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6025 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6026 suppressed.) Also now that the compiler is looking at declarations
6027 in the environment, it checks optimization declarations as well,
6028 and suppresses inlining when (> DEBUG SPEED).
6029 * More fixes have been made to treatment of floating point exception
6030 treatment and other Unix signals. In particular, floating point
6031 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6032 * The detection and handling of control stack exhaustion (infinite
6033 or very deeply nested recursion) has changed. Stack exhaustion
6034 detection is now done by write-protecting pages at the OS level
6035 and applies at all optimization settings; when found, a
6036 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6037 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6038 be caught using IGNORE-ERRORS.
6039 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6040 correctly when transforming recursive LABELS functions to LETs.
6041 (thanks to Alexey Dejneka)
6042 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6043 that are names of constants or global variables.
6044 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6045 alien routines with docstrings.
6046 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6047 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6049 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6050 (thanks to Eric Marsden)
6051 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6052 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6053 * Bug fix: The SPARC backend can now compile functions involving
6054 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6055 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6056 to a functions expecting a PATHNAME-DESIGNATOR.
6057 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6058 lambda lists. (thanks to Alexey Dejneka)
6059 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6060 functions so that EXPORTing the name of the class doesn't cause
6061 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6062 to Antonio Martinez for reporting this)
6063 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6064 constant-folded without failing an assertion. (thanks to Einar
6065 Floystad Dorum for reporting this)
6066 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6067 types are now dealt with more correctly by the compiler.
6068 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6069 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6070 behaviour analogous to RENAME-FILE. This puts its behaviour more
6071 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6073 * The fasl file version number has changed again. (because of the
6074 bug fix involving the names of PCL MAKE-INSTANCE functions)
6076 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6077 * bug fix: Floating point exceptions are treated much more
6078 consistently on the x86/Linux and PPC/Linux platforms.
6079 * Array initialization with :INITIAL-ELEMENT is now much faster for
6080 cases when the compiler cannot open code the array creation, but
6081 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6082 array accesses have also seen a speed increase.
6083 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6084 specified. (This was at the root of some bad interactions between
6085 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6087 * bug fix: Internal error arguments for undefined functions are now
6088 computed correctly on the PPC/Linux platform.
6089 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6090 Raymond Toy's patch for CMU CL)
6091 * Support for the Solaris 9 operating environment has been included
6092 (thanks to Daniel Merritt)
6093 * A very ugly but hopefully complete draft of the missing FFI chapter
6094 of the manual has been created by reformatting the corresponding
6095 CMU CL manual chapter into (currently very ugly and incoherent)
6096 DocBook and bringing it up to date for SBCL behavior. Thus, the
6097 manual is now essentially complete, at least by my extreme
6098 once-and-only-once standards, whereby it's acceptable to refer to
6099 the doc strings of SB-EXT functions as the primary documentation.
6100 * The fasl file version number has changed again, due to cleanup of
6101 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6102 is no longer a static symbol.)
6104 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6105 * SBCL now builds with OpenMCL (version 0.12) as the
6106 cross-compilation host; also, more progress has been made toward
6107 bootstrapping under CLISP.
6108 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6110 * bug 158 fixed: The compiler can now deal with integer loop
6111 increments different from 1; fixing this turned out also to fix
6113 * bug 169 fixed: no more bogus warnings about using lexical bindings
6114 despite the presence of perfectly good SPECIAL declarations (thanks
6115 to David Lichteblau)
6116 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6117 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6118 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6120 * bug 180 fixed: Method combination specifications no longer ignore
6121 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6122 * bug fix: Structure type predicate functions now check their argument
6123 count as they should.
6124 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6125 correctly. (thanks to Pierre Mai)
6126 * minor incompatible change: The --noprogrammer option is deprecated
6127 in favor of the new --disable-debugger option, which is very similar.
6128 (The major difference is that it takes effect at a slightly different
6129 time at startup, causing handling of errors in --sysinit and
6130 --userinit files will be affected differently.) The
6131 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6132 been added to allow this functionality to be controlled from ordinary
6133 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6134 maintainers, who might want to run non-interactive scripts to
6135 build SBCL cores which will later be used interactively.)
6136 * minor incompatible change: The LOAD function no longer, when given
6137 a wild pathname to load, loads all files matching that pathname.
6138 Instead, an error of type FILE-ERROR is signalled.
6140 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6141 * bug 147 fixed: The compiler preserves its block link/count
6142 invariants more correctly now so that it doesn't crash. (thanks
6144 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6146 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6147 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6148 no-value-for-this-character as NIL (as specified by ANSI).
6149 * HOST-NAMESTRING on physical pathnames now returns a string that is
6150 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6151 (thanks to Christophe Rhodes)
6152 * The Alpha port handles icache flushing more correctly. (thanks to
6154 * More progress has been made toward bootstrapping under CLISP. (thanks
6155 to Christophe Rhodes)
6156 * The fasl file format has changed again, because dynamic loading
6157 on OpenBSD (which has non-ELF object files) motivated some cleanups
6158 in the way that foreign symbols are transformed and passed around.
6159 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6160 is no longer treated as whitespace by the reader, but instead as
6161 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6162 |A
\x7fB|, instead of A as it used to.
6164 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6165 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6166 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6167 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6168 this as of 0.7.1.45, but was left out of the previous news section
6169 (thanks to Dan Barlow)
6170 * SBCL now runs on the Solaris operating system on SPARC architectures
6171 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6172 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6173 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6174 * SPARC backend cleanups, allowing builds of cores optimized for V8
6175 and V9 SPARCS, and also emission of code targeted to a particular
6176 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6178 * SBCL is closer to bootstrapping under CLISP, thanks to various
6179 fixes by Christophe Rhodes.
6180 * The fasl file format has changed again, to allow the compiler's
6181 INFO database to support symbol macros.
6182 * The user manual (in doc/) is formatted into HTML more nicely.
6183 (thanks to coreythomas)
6184 * The system is smarter about SUBTYPEP relationships, especially
6185 those involving NOT types (including types such as ATOM which are
6186 represented internally using NOT types). Thus SUBTYPEP is less
6187 likely to return (VALUES NIL NIL) in general, and in particular
6188 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6190 * The fasl file format has changed again, because the internal
6191 representation of types now includes a new slot to support the new
6192 SUBTYPEP-of-NOT-types logic.
6193 * (not a change in the main branch of SBCL, but a related prototype
6194 which can hopefully be merged into the main branch of SBCL in the
6195 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6196 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6197 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6198 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6199 dispatch macro character combinations. (thanks to Alexey Dejneka)
6200 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6201 that superficially look like logical namestrings correctly.
6202 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6204 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6205 default supplied-p) for &optional and &key arguments. (thanks to
6208 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6209 * incompatible change: The compiler is now less aggressive about
6210 tail call optimization, doing it only when (> SPACE DEBUG) or
6211 (> SPEED DEBUG). (This is an incompatible change because there are
6212 programs which relied on the old CMU-CL-style behavior to optimize
6213 away their unbounded recursion which will now die of stack overflow.)
6214 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6215 for non-GENCGC systems has been increased to 20M (since that
6216 seems much closer to the likely performance optimum for modern
6217 systems than the old 4M value was)
6218 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6219 and *DEBUG-PRINT-LEVEL*
6220 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6221 of CMU CL's support for SPARC, and various endianness and other
6222 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6223 * new syntactic sugar for the Unix command line: --load foo.bar is now
6224 an alternate notation for --eval '(load "foo.bar")'.
6226 ** The system now detects stack overflow and handles it gracefully,
6227 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6228 optimization settings. (This is a good thing in general, and
6229 its introduction in this version should be particularly timely
6230 for anyone whose code fails because of suppression of tail
6232 ** The system now hunts for the C variable "environ" in a more
6233 devious way, to avoid segfaults when the C library version differs
6234 between compile time and run time. (thanks to Christophe Rhodes)
6235 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6236 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6237 ** The compiler no longer issues bogus style warnings for undefined
6238 classes in the same source file as the DEFCLASSes which defined
6239 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6241 ** fixes in CONDITION class precedence list for undefined function
6242 errors (thanks to Alexei Dejneka)
6243 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6244 correctly. (thanks to Dan Barlow)
6245 ** portability fixes aiming at bootstrapping under CLISP (thanks
6246 to Dave McDonald and Christophe Rhodes)
6247 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6248 ** fixes in type translation and and type inference (thanks to
6250 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6251 ** various fixes in the new ports (thanks to Dan Barlow)
6252 * several changes related to debugging:
6253 ** suppression of tail recursion, as noted above
6254 ** stack overflow detection, as noted above
6255 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6256 is now the default. (For some time encapsulation has been more
6257 reliable than the breakpoint-based :ENCAPSULATE NIL
6258 implementation, at least on X86 systems; and I just noticed that
6259 encapsulation also seems closer to the spirit of the ANSI
6262 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6264 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6265 up properly again. (There was a packaging bug in 0.7.0 which
6266 left their definitions in SB-SYS::LOAD-FOREIGN and
6267 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6268 vital for most things which interface to C-level interfaces,
6269 like extensions working with sockets or databases or
6270 Perl-compatible regexes or whatever, and the need to fix
6271 this bug is the main reason that 0.7.1 was released so
6273 ** DEFGENERIC is now choosier about the methods it redefines, so that
6274 reLOADing a previously-LOADed file containing DEFGENERICs does
6275 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6276 cycle now works as it should. (thanks to Alexey Dejneka)
6277 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6278 fixed by Christophe Rhodes. (He actually submitted this patch
6279 months ago, and I delayed until after 0.7.0.)
6280 ** Bug 111 (internal compiler confusion about runtime checks on
6281 FUNCTION types) was fixed by Alexey Dejneka.
6282 * Some internal cleanups (getting rid of variables which aren't
6283 needed now that the byte interpreter is gone) caused the fasl
6284 file format number to change again.
6286 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6287 * major incompatible change: The default fasl file extension, i.e. the
6288 default extension for files produced by COMPILE-FILE, has changed
6289 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6291 ** There are many changes in the implementation of the compiler.
6292 SBCL is now essentially a compiler-only implementation of ANSI
6293 Common Lisp. EVAL still "interprets" a few special cases, but
6294 almost all the interesting cases are handled by creating
6295 a LAMBDA expression, calling COMPILE on it, then calling
6296 FUNCALL on the result.
6297 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6298 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6299 Since the code is newer, there might still be some new bugs
6300 (though not as many as before Martin Atzmueller's fixes:-). But
6301 the new code is substantially simpler and clearer, and hopefully
6302 any remaining bugs will be simpler, less fundamental, and more
6303 fixable then the bugs in the old code.
6304 ** The revised compiler is still a little unsteady on its feet.
6306 *** The debugging information it produces (particularly the names
6307 of FUNCTION objects) is sometimes much less useful than what
6308 the old compiler produced.
6309 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6310 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6311 within a MACROLET) has been temporarily weakened.
6312 ** There are new compiler optimizations for various functions:
6313 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6314 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6315 *** the math functions TRUNCATE, FLOOR, and CEILING
6316 *** the function-of-all-trades COERCE
6317 Mostly these should be transparent, but there's one
6318 potentially-annoying problem (bug 117): when the compiler
6319 inline-expands a function and does type analysis on the result,
6320 it can create control paths which have type mismatches, and
6321 when it can't prove that those control paths aren't taken,
6322 it will issue WARNINGs about the type mismatches. This is
6323 a particular problem in practice for the new sequence functions.
6324 It's not clear how this should be fixed, and for now, a
6325 workaround is given in the entry for 117 in the BUGS file.
6326 ** (Because of the interaction between the two previous items --
6327 occasional inlining problems and new inline expansions -- some
6328 of the new sequence function optimizations won't really kick in
6329 completely until debugging information, and then inlining, are
6330 straightened out in some future version.)
6331 * minor incompatible changes:
6332 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6333 DIRECTORY no longer implicitly promotes NIL slots of its
6334 pathname argument to :WILD. In particular, when you ask for the
6335 contents of a directory (which you used to be able to do without
6336 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6337 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6338 ** changes in behavior that ANSI explicitly defines to be
6339 implementation dependent:
6340 *** The new compiler-only implementation still conforms with ANSI,
6341 but acts a little different than before. Besides the obvious
6342 changes in performance tradeoffs (that the cost per form passed
6343 to EVAL has gone up, and the cost per form executed by EVAL
6344 has gone down), the behavior of the system changes a little
6345 because there are no longer any interpreted function objects.
6346 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6347 e.g. doing COMPILE on the output of interactive DEFUN is
6349 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6351 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6352 has changed from (:CL) to NIL.
6353 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6354 e.g. #\Newline and #\Tab, don't have names specified in the
6355 ANSI Common Lisp standard, is now based on their ASCII symbolic
6356 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6357 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6358 are no longer used for output.
6359 ** changes in internal implementation constants:
6360 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6361 4 million. (If your application spends a lot of time GCing and
6362 you have a lot of RAM, you might want to experiment with
6363 increasing it even more.)
6364 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6365 However, almost all old code should still continue to work without
6366 immediate update, as SB-C-CALL is now a (deprecated) nickname
6368 ** Old operator names in the style DEF-FOO are now deprecated in
6369 favor of new corresponding names DEFINE-FOO, for consistency with
6370 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6371 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6372 internal symbols, but a few supported extensions like
6373 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6374 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6375 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6376 etc. as you get deeper into recursive calls to the debugger
6377 command loop, instead of the old "5]", "5]]", "5]]]"
6378 sequence. (I was motivated to do this when squabbles between
6379 ILISP and SBCL left me very deeply nested in the debugger. In the
6380 short term, this change will probably provoke more ILISP/SBCL
6381 squabbles, but hopefully it will be an improvement in the long run.)
6382 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6383 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6384 function, since declaiming return types involving aliens is
6385 (1) annoyingly messy to do by hand and (2) vital to efficient
6386 compilation of code which calls such functions.
6387 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6388 longer reexported by the SB-EXT package. They're solely useful
6389 for alien code, so it seems more logical that you should get
6390 them from the SB-ALIEN package, not in SB-EXT.
6391 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6392 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6393 features. Instead, the code that they used to control is always
6394 built into the system.
6395 * many other bug fixes
6396 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6397 advantage of the new EVAL-WHEN stuff and to clean them up in
6398 general, and they are now more ANSI-compliant in a number of
6399 ways. Martin Atzmueller is responsible for a lot of this.
6400 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6402 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6403 *** correct ERROR type for various file operations
6404 *** some fixes for Lisp streams
6405 *** DEFMETHOD syntax checking
6406 *** changing old weird representation of debug information as
6407 strings (which, among their other deficiencies, don't transform
6408 correctly when you rename packages, and don't change their
6409 print representation when you change things like *PACKAGE*
6410 and *PRINT-LENGTH*) to symbols and lists of symbols
6411 He also made several improvements and fixed several bugs in DESCRIBE.
6412 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6414 *** misbehavior of WRITE-STRING/WRITE-LINE
6415 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6416 and several other LOOP problems as well
6417 *** DIRECTORY when similar filenames are present
6418 *** DEFGENERIC with :METHOD options
6419 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6420 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6421 *** argument ordering in FIND with :TEST option
6422 *** mishandled package designator argument in APROPOS-LIST
6423 *** various problems in the backquote readmacro
6424 *** a bug in APROPOS
6425 *** probably some others that I'm not describing very well here,
6426 since the CVS log documents them by reference to sbcl-devel
6427 messages, and the SourceForge archives aren't working well.:-(
6428 ** Dan Barlow improved the Alpha port (and is making progress on the
6429 PPC port, for those of you who think different).
6430 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6431 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6432 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6433 continues to work on the SPARC port (for those of you in a position
6434 to look down upon our little PC-compatible boxes from a great height).
6435 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6436 and uses that copy, rather than the current dynamic value, when
6437 it's trying to decide whether to truncate output. Thus e.g.
6438 (let ((*print-lines* 50))
6439 (pprint-logical-block (stream nil)
6441 (let ((*print-lines* 8))
6442 (print (aref possiblybigthings i) stream)))))
6443 should now truncate the logical block only at 50 lines, instead of
6444 often truncating it at 8 lines, as it did before.
6445 * The doc/cmucl/ directory, containing old CMU CL documentation
6446 from the time of the fork, is no longer part of the base system.
6447 SourceForge has shut down its anonymous FTP service, and with it
6448 my original plan for distributing the old CMU CL documentation
6449 there. For now, if you need these files you can download an old
6450 SBCL source release and extract them from it.
6451 * The fasl file version number changed again, for dozens of reasons,
6452 some of which are apparent above.
6454 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6455 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6456 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6457 patch, so that DISASSEMBLE output is much nicer.
6458 * The code in the SB-PROFILE package now seems reasonably stable.
6459 I still haven't decided what the final interface should look like
6460 (I'd like PROFILE to interact cleanly with TRACE, since both
6461 facilities use function encapsulation) but if you have a need
6462 for profiling now, you can probably use it successfully with
6463 the current CMU-CL-style interface.
6464 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6465 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6466 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6467 link now returns the dangling link itself, and for similar
6468 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6469 link itself. (In these cases the old code signalled an error and
6470 looped endlessly, respectively.) Thus, DIRECTORY now works even
6471 in the presence of dangling and cyclic symbolic links.
6472 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6473 is now a supported extension again, since the consensus on
6474 sbcl-devel was that it can be useful for ordinary development
6475 work, not just for debugging SBCL itself.
6476 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6477 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6478 that currently-defined functions might be redefined later with
6479 different return types.
6480 * Hash tables can be printed readably, as inspired by CMU CL code
6481 of Eric Marsden and SBCL code of Martin Atzmueller.
6482 * better error handling in CLOS method combination, thanks to
6483 Martin Atzmueller porting Pierre Mai's CMU CL patches
6484 * more overflow fixes for >16Mbyte I/O buffers
6485 * A bug in READ has been fixed, so that now a single Ctrl-D
6486 character suffices to cause end-of-file on character streams.
6487 In particular, now you only need one Ctrl-D at the command
6488 line (not two) to exit SBCL.
6489 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6491 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6492 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6493 does the right thing.
6494 * The implementation of some type tests, especially for CONDITION
6495 types, is now tidier and maybe faster, due to CMU CL code
6496 originally by Douglas Crosher, ported by Martin Atzmueller.
6497 * Some math functions have been fixed, and there are new
6498 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6499 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6500 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6501 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6502 likely to be built into sbcl-0.7.0.)
6503 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6504 CL, ported to SBCL by Martin Atzmueller)
6505 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6506 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6507 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6508 * There's a new slam.sh hack to shorten the edit/compile/debug
6509 cycle for low-level changes to SBCL itself, and a new
6510 :SB-AFTER-XC-CORE target feature to control the generation of
6511 the after-xc.core file needed by slam.sh.
6512 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6513 COMPILE-FILE is no longer supported, so that now every function
6514 gets an entry point, so that block compilation looks a little
6515 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6516 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6517 returns the number of bytes consed since the system started,
6518 rather than the number consed since the first time the function
6519 was called. (The new definition parallels ANSI functions like
6520 CL:GET-INTERNAL-RUN-TIME.)
6521 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6522 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6523 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6524 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6525 * Fasl file version numbers are now independent of the target CPU,
6526 since historically most system changes which required version
6527 number changes have affected all CPUs equally. Similarly,
6528 the byte fasl file version is now equal to the ordinary
6531 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6532 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6533 is no longer recognized. I apologize for this, because it was
6534 listed in SB-EXT as a supported extension, but I found that
6535 its existing behavior was poorly specified, as well as incorrectly
6536 specified, and it looked like too much of a mess to straighten it
6537 out. I have enough on my hands trying to get ANSI stuff to work..
6538 * many patches ported from CMU CL by Martin Atzmueller, with
6539 half a dozen bug fixes in pretty-printing and the debugger, and
6540 half a dozen others elsewhere
6541 * fixed bug 13: Floating point infinities are now supported again.
6542 They might still be a little bit flaky, but thanks to bug reports
6543 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6544 as flaky as they were.
6545 * The --noprogrammer command line option is now supported. (Its
6546 behavior is slightly different in detail from what the old man
6547 page claimed it would do, but it's still appropriate under the
6548 same circumstances that the man page talks about.)
6549 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6550 are now supported, and enabled by default. Thus, the compiler can
6551 handle many floating point and complex operations much less
6552 inefficiently. (Thus e.g. you can implement a complex FFT
6554 * The compiler now detects type mismatches between DECLAIM FTYPE
6555 and DEFUN better, and implements CHECK-TYPE more correctly, and
6556 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6557 thanks to patches from Martin Atzmueller.
6558 * various fixes to make the cross-compiler more portable to
6559 ANSI-conforming-but-different cross-compilation hosts (notably
6560 Lispworks for Windows, following bug reports from Arthur Lemmens)
6561 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6562 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6563 fixed thanks to Pierre Mai's CMU CL patches.
6564 * fixes to keep the system from overflowing internal counters when
6565 it tries to use i/o buffers larger than 16M bytes
6566 * fixed bug 45a: Various internal functions required to support
6567 complex special functions have been merged from CMU CL sources.
6568 (When I was first setting up SBCL, I misunderstood a compile-time
6569 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6570 * improved support for type intersection and union, fixing bug 12
6571 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6572 more obscure bugs as well
6573 * some steps toward byte-compiling non-performance-critical
6574 parts of the system, courtesy of patches from Martin Atzmueller
6575 * Christophe Rhodes has made some debian packages of sbcl at
6576 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6577 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6578 stable, but are nonetheless usable. When he's ready, I'd be happy
6579 to add them to the SourceForge "File Releases" section. (And if
6580 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6581 * new fasl file format version number (because of changes in
6582 internal representation of (OR ..) types to accommodate the new
6583 support for (AND ..) types, among other things)
6585 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6586 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6588 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6590 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6591 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6592 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6593 * DESCRIBE now works on structure objects again.
6594 * Most function call argument type mismatches are now handled as
6595 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6596 know whether the function will be redefined before the call is
6597 executed. (The compiler could flag local calls with full WARNINGs,
6598 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6599 it doesn't keep track of enough information to know whether calls
6600 are local in this sense.)
6601 * Compiler output is now more verbose, with messages truncated
6602 later than before. (There should be some supported way for users
6603 to override the default verbosity, but I haven't decided how to
6604 provide it yet, so this behavior is still controlled by the internal
6605 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6606 src/compiler/ir1util.lisp.)
6607 * Fasl file format version numbers have increased again, because
6608 support for the Gray streams extension changes the layout of the
6609 system's STREAM objects.
6610 * The Gray subclassable streams extension now works, thanks to a
6611 patch from Martin Atzmueller.
6612 * The full LOAD-FOREIGN extension (not just the primitive
6613 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6614 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6615 but like most other programs, it defaults to copying the Unix
6616 environment from the original process instead of starting the
6617 new process in an empty environment.
6618 * Extensions which manipulate the Unix environment now support
6619 an :ENVIRONMENT keyword option which doesn't smash case or
6620 do other bad things. The CMU-CL-style :ENV option is retained
6621 for porting convenience.
6622 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6623 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6625 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6627 * A patch from Martin Atzmueller seems to have solved the SIGINT
6628 problem, and as far as we know, signal-handling now works cleanly.
6629 (If you find any new bugs, please report them!)
6630 * The system no longer defaults Lisp source file names to types
6631 ".l", ".cl", or ".lsp", but only to ".lisp".
6632 * The compiler no longer uses special default file extensions for
6633 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6634 seems to expect a single default extension for all compiled code,
6635 and there's no compelling reason to try to stretch the standard
6636 to allow two different extensions.) Instead, byte-compiled files
6637 default to the same extension as native-compiled files.
6638 * Fasl file format version numbers have increased again, because
6639 a rearrangement of internal implementation packages made some
6640 dumped symbols in old fasl files unreadable in new cores.
6641 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6642 many fewer weird special cases.
6643 * Bug #17 (differing COMPILE-FILE behavior between logical and
6644 physical pathnames) has been fixed, and some related misbehavior too,
6645 thanks to a patch from Martin Atzmueller.
6646 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6647 by Tim Moore, ported to SBCL by Martin Atzmueller.
6648 * Martin Atzmueller fixed several filesystem-related problems,
6649 including bug #36, in part by porting CMU CL patches, which were
6650 written in part by Paul Werkowski.
6651 * More compiler warnings in src/runtime/ are gone, thanks to
6652 more patches from Martin Atzmueller.
6653 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6656 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6658 * DESCRIBE now works on CONDITION objects.
6659 * The debugger now handles errors which arise when trying to print
6660 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6662 * The build system now uses an additional file, customize-target-features.lisp,
6663 to allow local modifications to the target *FEATURES* list. (The point of
6664 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6665 debugging features enabled, without having to worry about propagating it
6666 into everyone's system when I do a "cvs update".) When no
6667 customize-target-features.lisp file exists, the target *FEATURES* list
6668 should be constructed the same way as before.
6669 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6670 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6671 warn about behavior which is undefined under the ANSI spec. Note: This
6672 is specified by ANSI, but it's not very popular with programmers.
6673 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6674 macro in the SBCL sources for an example of a workaround which you
6675 might use to make portable ANSI-standard code which does what you want.
6676 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6677 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6678 when it's used as a non-toplevel form. (This is required in order
6679 to implement the DEFCONSTANT-EQX macro.)
6680 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6681 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6682 funny things, due to bugs in the implementation of EVAL-WHEN
6683 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6684 non-toplevel DEFCONSTANTs are uncommon.)
6685 * The core file version number and fasl file version number have been
6686 incremented, because the old noncompliant DEFCONSTANT behavior involved
6687 calling functions which no longer exist, and because I also took the
6688 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6689 * fixed bug 1 (error handling before read-eval-print loop starts), and
6690 redid debugger restarts and related debugger commands somewhat while
6692 ** The QUIT debugger command is gone, since it did something
6693 rather different than the SB-EXT:QUIT command, and since it never
6694 worked properly outside the main toplevel read/eval/print loop.
6695 Invoking the new TOPLEVEL restart provides the same functionality.
6696 ** The GO debugger command is also gone, since you can just invoke
6697 the CONTINUE restart directly instead.
6698 ** The TOP debugger command is also gone, since it's redundant with the
6699 FRAME 0 command, and since it interfered with abbreviations for the
6701 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6703 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6704 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6705 some porting work by Martin Atzmueller)
6706 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6707 with a boatload of patches which he ported to SBCL. Now that those
6709 ** The system tries to make sure that its low-priority messages
6710 are prefixed by semicolons, to help people who like to use
6711 syntax highlighting in their ILISP buffer. (This patch
6712 was originally due to Raymond Toy.)
6713 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6714 patches originally written by Raymond Toy.
6715 ** The compiler understands coercion between single-value and
6716 multiple-VALUES type expressions better, getting rid of some very
6717 weird behavior, thanks to patches originally by Robert MacLachlan
6718 and Douglas Crosher.
6719 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6720 lambda lists, thanks to a patch originally by Pierre Mai.
6721 ** The system no longer bogusly warns about "abbreviated type
6723 ** The compiler gets less confused by inlining and RETURN-FROM,
6724 thanks to some patches originally by Tim Moore.
6725 ** The system no longer hangs when dumping circular lists to fasl
6726 files, thanks to a patch originally from Douglas Crosher.
6727 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6728 undefined function error.
6729 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6730 in structure slot initforms) for now, documented workaround instead:-|
6731 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6732 * fixed bug 5: added stubs for various Gray stream functions called
6733 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6734 installed, at least appropriate type errors are generated
6735 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6736 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6737 consistently in DEFMETHOD forms.
6738 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6739 it doesn't seem to affect SBCL after all
6740 * The C runtime system now builds with better optimization and many
6741 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6743 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6745 * The system is now under CVS at SourceForge (instead of the
6746 CVS repository on my home machine).
6747 * The new signal handling code has been tweaked to treat register
6748 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6749 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6750 downstream, e.g. in debug-int.lisp, has implicit dependencies
6751 on the unsignedness of integer representation of machine words,
6752 and that caused the system to bomb out with infinite regress
6753 when trying to recover from type errors involving signed values,
6754 e.g. (BUTLAST '(1 2 3) -1).)
6755 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6756 (This was one of the bugs Peter Van Eynde reported back in July.)
6757 * The system now uses code inspired by Colin Walters' O(N)
6758 implementation of MAP (from the cmucl-imp@cons.org mailing
6759 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6760 inline the MAP operation, and there is more than one
6761 sequence argument to the MAP call (so that it can't just
6762 do ETYPECASE once and for all based on the type of the
6763 single sequence argument). (The old non-inline implementation
6764 of the general M-argument sequence-of-length-N case required
6765 O(M*N*N) time when any of the sequence arguments were LISTs.)
6766 * The QUIT :UNIX-CODE keyword argument has been renamed to
6767 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6768 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6770 * Raymond Wiker's patches to port dynamic loading from Linux to
6771 FreeBSD have been added.
6772 * The BUGS file is now more nearly up to date, thanks in large part
6773 to Martin Atzmueller's review of it.
6774 * The debugger now flushes standard output streams before it begins
6775 its output ("debugger invoked" and so forth).
6776 * The core version number and fasl file version number have both
6777 been incremented, because of incompatible changes in the layout
6779 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6780 used to not be called for a saved Lisp image.)
6781 * Martin Atzmueller's version of a patch to fix a compiler crash,
6782 as posted on sbcl-devel 13 September 2000, has been installed.
6783 * Instead of installing Martin Atzmueller's patch for the
6784 compiler transform for SUBSEQ, I deleted the compiler transform,
6785 and transforms for some similar consing operations.
6786 * A bug in signal handling which kept TRACE from working on OpenBSD
6788 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6789 away by constant folding
6790 * The system now defines its address space constants in one place
6791 (in the Lisp sources), and propagates them automatically elsewhere
6792 (through GENESIS and the sbcl.h file). Therefore, patching the
6793 address map is less unnecessarily tedious and error-prone. The
6794 Lisp names of address space constants have also been systematized.
6795 * CVS tags like dollar-Header-dollar have been removed from
6796 the sources, because they have never saved me trouble and
6797 they've been source of trouble working with patches and other
6798 diff-related operations.
6799 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6800 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6802 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6804 * The system has been ported to OpenBSD.
6805 * The system now compiles with a simple "sh make.sh" on the systems
6806 that it's supported on. I.e., now you no longer need to tweak
6807 text in the target-features.lisp-expr and symlinks in src/runtime/
6808 by hand, the make.sh takes care of it for you.
6809 * The system is no longer so grossly inefficient when compiling code
6810 involving vectors implemented as general (not simple) vectors (VECTOR T),
6811 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6812 which dares to use the various sequence functions on non-simple
6813 vectors, takes less of a performance hit.
6814 * There is now a primitive type predicate VECTOR-T-P
6815 to test for the (VECTOR T) type, so that e.g.
6816 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6817 can now be compiled with some semblance of efficiency. (The old code
6818 turned the type declaration into a full call to %TYPEP at runtime!)
6819 * AREF on (VECTOR T) is still not fast, since it's still compiled
6820 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6821 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6822 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6823 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6824 without making full calls to SUBTYPEP at runtime.
6825 (Some analogous efficiency issues for non-simple vectors specialized to
6826 element types other than T, or for non-simple multidimensional arrays,
6827 have not been addressed. They could almost certainly be handled the
6828 same way if anyone is motivated to do so.)
6829 * The changes in array handling break binary compatibility, so
6830 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6831 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6832 instead of (VALUES T T).
6833 * By following the instructions that Dan Barlow posted to sbcl-devel
6834 on 2 July 2000, I was able to enable primitive dynamic object
6835 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6836 functionality is not implemented (since it calls ld to resolve
6837 library references automatically, requiring RUN-PROGRAM for its
6838 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6839 try to resolve library references) is now supported.
6840 * The system now flushes the standard output streams when it terminates,
6841 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6842 them at several other probably-convenient times, e.g. in each pass of
6843 the toplevel read-eval-print loop, and after evaluating a form given
6844 as an "--eval" command-line option. (These changes were motivated by a
6845 discussion of stream flushing issues on cmucl-imp in August 2000.)
6846 * The source transform for TYPEP of array types no longer assumes
6847 that an array whose element type is a not-yet-defined type
6848 is implemented as an array of T, but instead punts, so that the
6849 type will be interpreted at runtime.
6850 * There is now some support for cross-compiling in make.sh: each of
6851 the phases of make.sh has its own script. (This should be transparent
6852 to people doing ordinary, non-cross-compile builds.)
6853 * Since my laptop doesn't have hundreds of megabytes of memory like
6854 my desktop machine, I became more motivated to do some items on
6855 my to-do list in order to reduce the size of the system a little:
6856 ** Arrange for various needed-only-at-cold-init things to be
6857 uninterned after cold init. To support this, those things have
6858 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6859 symbols with such names are now uninterned after cold init).
6860 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6861 fasl files for cold load.
6862 ** Remove the old compiler structure pooling code (which used to
6863 be conditional on the target feature :SB-ALLOC) completely.
6864 ** Redo the representation of some data in cold init to be more compact.
6865 (I also looked into supporting byte compiled code at bootstrap time,
6866 which would probably reduce the size of the system a lot, but that
6867 looked too complicated, so I punted for now.)
6868 * The maximum signal nesting depth in the src/runtime/ support code has
6869 been reduced from 4096 to 256. (I don't know any reason for the very
6870 large old value. If the new smaller value turns out to break something,
6871 I'll probably just bump it back up.)
6872 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6874 * Many, many bugs reported by Peter Van Eynde have been added to
6875 the BUGS list; some have even been fixed.
6876 * While enabling dynamic object file loading, I tried to make the
6877 code easier to understand, renaming various functions and variables
6878 with less ambiguous names, and changing some function calling
6879 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6880 * While trying to figure out how to do the OpenBSD port, I tried to
6881 clean up some of the code in src/runtime/. In particular, I dropped
6882 support for non-POSIX signal handling, added various comments,
6883 tweaked the code to reduce the number of compilation warnings, and
6884 renamed some files to increase consistency.
6885 * To support the new automatic configuration functionality in make.sh,
6886 the source file target-features.lisp-expr has been replaced with the
6887 source file base-target-features.lisp-expr and the machine-generated
6888 file local-target-features.lisp-expr.
6889 * fixed a stupid quoting error in make.sh so that using CMU CL
6890 "lisp -batch" as cross-compilation host works again
6892 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6894 * DESCRIBE no longer tries to call itself recursively to describe
6895 bound/fbound values, so that it no longer fails on symbols which are
6896 bound to themselves (like keywords, T, and NIL).
6897 * DESCRIBE now works on generic functions.
6898 * The printer now prints less-screwed-up representations of closures
6899 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6900 * A private symbol is used instead of the :EMPTY keyword previously
6901 used to mark empty slots in hash tables. Thus
6902 (DEFVAR *HT* (MAKE-HASH-TABLE))
6903 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6904 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6905 now does what ANSI says that it should. (You can still get
6906 similar noncompliant behavior if bang on the hash table
6907 implementation with all the symbols you get back from
6908 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6909 This breaks binary compatibility, since tests for equality to
6910 :EMPTY are wired into things like the macroexpansion of
6911 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6913 * There's now a minimal placeholder implementation for CL:STEP,
6914 as required by ANSI.
6915 * An obscure bug in the interaction of the normal compiler, the byte
6916 compiler, inlining, and structure predicates has been patched
6917 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6918 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6920 * Missing ordinary arguments in a macro call are now detected even
6921 when the macro lambda list contains &KEY or &REST.
6922 * The debugger no longer complains about encountering the top of the
6923 stack when you type "FRAME 0" to explicitly instruct it to go to
6924 the top of the stack. And it now prints the frame you request even
6925 if it's the current frame (instead of saying "You are here.").
6926 * As specified by ANSI, the system now always prints keywords
6927 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6929 * The default initial SIZE of HASH-TABLEs is now smaller.
6930 * Type information from CLOS class dispatch is now propagated
6931 into DEFMETHOD bodies, so that e.g.
6932 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6934 is now basically equivalent to
6935 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6936 (DECLARE (TYPE SINGLE-FLOAT X))
6938 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6939 operation, without having to do run-time type dispatch.
6940 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6941 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6942 * Since I don't seem to be making big file reorganizations very often
6943 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6944 is overflowing my ability to conveniently back them up), I've finally
6945 checked the system into CVS. (The CVS repository is on my home system,
6946 not at SourceForge -- putting it on SourceForge might come later.)
6947 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6948 high-level GC-NOTIFY-FOO functions send their output. (There's
6949 still very little control of where low-level verbose GC functions
6950 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6951 less than it used to -- the GC-NOTIFY-FOO functions are now under
6952 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6953 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6954 in only one place in the source code, and propagates it automatically
6955 everywhere that it's needed. Thus e.g. when I bump the version from
6956 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6957 * The C source files now include boilerplate legalese and documentation
6958 at the head of each file (just as the Lisp source files already did).
6959 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6960 to his page will be replaced with a link to his new CLiki service.
6962 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6964 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6965 * The build process now looks for GNU make under the default name "gmake",
6966 instead of "make" as it used to. If GNU make is not available as "gmake"
6967 on your system, you can change this default behavior by setting the
6968 GNUMAKE environment variable.
6969 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6970 can build without error under CMU CL.
6972 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6974 * There is now a partial SBCL user manual (with some new text and some
6975 text cribbed from the CMU CL manual).
6976 * The beginnings of a profiler have been added (starting with the
6977 CMU CL profiler and simplifying and cleaning up). Eventually the
6978 main interface should be through the TRACE macro, but for now,
6979 it's still accessed through vaguely CMU-CL-style functions and macros
6980 exported from the package SB-PROFILE.
6981 * Some problems left over from porting CMU CL to the new
6982 cross-compilation bootstrap process have been cleaned up:
6983 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6984 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6985 part when getting rid of the compiler *BACKEND* stuff.)
6986 ** The value of *NULL-TYPE* was screwed up, because it was
6987 being initialized before the type system knew the final
6988 definition of the 'NULL type. This screwed up several key
6989 optimizations in the compiler, causing inefficiency in all sorts
6990 of places. (I found it because I wanted to understand why
6991 GET-INTERNAL-RUN-TIME was consing.)
6992 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6993 PROCLAIM FTYPE information. Unfortunately this broke binary
6994 compatibility again, since now the forms output by DEFGENERIC
6995 to refer to functions which didn't exist in 0.6.3.
6996 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6997 can use the new (as of 0.6.3) transform for SOME into MAP into
6999 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7000 values to (INTEGER 0 1000000), so that the time code will no longer
7001 occasionally get blown up by Linux returning 1000000 microseconds
7002 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7003 its output conform to the ANSI spec. (Alas, this makes its output
7004 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7005 * A full call to MAP NIL with a single sequence argument no longer conses.
7006 * fixes to problems pointed out by Martin Atzmueller:
7007 * The manual page no longer talks about multiprocessing as though
7008 it were currently supported.
7009 * The ILISP support patches have been removed from the distribution,
7010 because as of version 5.10.1, ILISP now supports SBCL without us
7011 having to maintain patches.
7012 * added a modified version of Raymond Toy's recent CMU CL patch for
7013 EQUALP comparison of HASH-TABLE
7015 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7017 * The system still can't cross-compile itself with
7018 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7019 entails), but at least it can compile more of itself that way
7020 than it used to be able to, and various buglets which were uncovered
7021 by trying to cross-compile itself that way have now been fixed.
7022 * This release breaks binary compatibility again. This time
7023 at least I've incremented the FASL file format version to 2, so that the
7024 problem can be detected reliably instead of just causing weird errors.
7025 * various new style warnings:
7026 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7027 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7028 ** using the lexical binding of a variable named in the *FOO* style
7029 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7030 as specified by ANSI.
7031 * *RANDOM-STATE* is no longer automatically initialized from
7032 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7033 default behavior of the system is to repeat its behavior every time
7034 it's run. If you'd like to change this behavior, you can always
7035 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7036 old convention there was no comparably easy way to get the system to
7037 repeat its behavior every time it was run.
7038 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7039 FTYPE declarations has been removed, in favor of their ANSI
7040 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7041 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7042 the types of their sequence arguments can be determined at compile time.
7043 This is done through a new open code expansion for MAP which eliminates
7044 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7045 argument types can be determined at compile time.
7046 * The optimizer now transforms COERCE into an identity operation when it
7047 can prove that the coerced object is already of the correct type. (This
7048 can be a win for machine generated code, including the output of other
7049 optimization transforms, such as the MAP transform above.)
7050 * Credit information has been moved from source file headers into CREDITS.
7051 * Source file headers have been made more standard.
7052 * The CASE macro now compiles without complaining even when it has
7055 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7057 * (Note that the way that the PCL macroexpansions were rewritten
7058 to accommodate the change in DEFGENERIC below breaks binary
7059 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7060 not run under sbcl-0.6.2. Once we get out of alpha releases,
7061 i.e. hit release 1.0.0, we'll probably try to maintain binary
7062 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7063 and sbcl-1.4.4. Until then, however, it might be fairly common
7064 for maintenance releases to break binary compatibility.)
7065 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7067 * The reporting of unhandled signals has been changed to print some
7068 explanatory text as well as the report form. (Previously only
7069 the report form was printed.)
7070 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7071 it defines, so that the compiler no longer issues undefined function
7072 warnings for compiled-but-not-yet-loaded generic functions.
7073 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7074 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7075 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7076 section of the ANSI spec are supported.
7077 * The "" nickname for the "KEYWORD" package has been removed.
7078 The reader still handles symbol tokens which begin with a package marker
7079 as keywords, but it doesn't expose its mechanism for doing so in the
7080 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7081 * The system now issues STYLE-WARNINGs for contradictory TYPE
7082 proclamations. (Warnings for contradictory FTYPE proclamations would
7083 be nice too, but those can't be done usefully unless the type system
7084 is made smarter about FUNCTION types.)
7085 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7086 systematized, so that "*target-*.lisp is supposed to exist only on the
7087 target and imply that there's a related file which exists on the
7088 host, and *host-*.lisp is supposed to exist only on the host and imply
7089 that there's a related file which exists on the target. This involves a
7090 lot of renaming. Hopefully the acute confusion caused by the renaming
7091 will be justified by the reduction in chronic confusion..
7092 ** runtime-type.lisp -> early-target-type.lisp
7093 ** target-type.lisp -> late-target-type.lisp
7094 ** early-host-format.lisp -> early-format.lisp
7095 ** late-host-format.lisp -> late-format.lisp
7096 ** host-error.lisp -> misc-error.lisp
7097 ** early-error.lisp -> early-target-error.lisp
7098 ** late-error.lisp -> late-target-error.lisp
7099 ** host-defboot.lisp -> early-defboot.lisp
7100 ** code/misc.lisp -> code/target-misc.lisp
7101 ** code/host-misc.lisp -> code/misc.lisp
7102 ** code/numbers.lisp -> code/target-numbers.lisp
7103 ** code/early-numbers.lisp -> numbers.lisp
7104 ** early-host-type.lisp -> early-type.lisp
7105 ** late-host-type.lisp -> late-type.lisp
7106 ** host-typep.lisp -> typep.lisp
7107 ** load.lisp -> target-load.lisp
7108 ** host-load.lisp -> load.lisp
7109 ** host-disassem.lisp -> disassem.lisp
7110 ** host-insts.lisp -> insts.lisp
7111 ** byte-comp.lisp -> target-byte-comp.lisp
7112 ** host-byte-comp.lisp -> byte-comp.lisp
7113 ** host-signal.lisp -> signal.lisp
7114 ** host-defstruct.lisp -> defstruct.lisp
7115 ** late-target-type.lisp -> deftypes-for-target.lisp
7116 Furthermore, several other previously target-only files foo.lisp (e.g.
7117 hash-table.lisp and random.lisp) have been split into a target-and-host
7118 foo.lisp file and a target-only target-foo.lisp file, with their key type
7119 definitions in the target-and-host part, so that the cross-compiler will
7120 know more about target types.
7121 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7122 gone away. In their place are various *BACKEND-FOO* variables
7123 corresponding to the slots of the old structure.
7124 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7125 into the target SBCL has been fixed.
7126 * The chill.lisp system for loading cold code into a running SBCL
7128 * Support for the CMU CL "scavenger hook" extension has been removed.
7129 (It was undocumented and unused in the CMU CL sources that SBCL was
7130 derived from, and stale in sbcl-0.6.1.)
7131 * Various errors in the cross-compiler type system were detected
7132 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7133 (enabling various consistency checks). Many of them were fixed,
7134 but some hard problems remain, so the compiler is back to
7135 running without *TYPE-SYSTEM-INITIALIZED* for now.
7136 * As part of the cross-compiler type system cleanup, I implemented
7137 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7138 * I have started adding UNCROSS calls throughout the type system
7139 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7140 on cross-compiler input files will be able to go away, and various
7142 * CONSTANTP now returns true for quoted forms (as explicitly required
7145 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7147 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7148 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7149 (MAKE-LIST -1). In the longer term, it ought to become true
7150 that declarations are assertions even at SAFETY 1. For now, it's not
7151 quite true even at SAFETY 3, but it's at least more nearly true..
7152 (Note that this change seems to increases the size of the system by
7153 O(5%) and to decrease the speed of the compiler by 20% or more.)
7154 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7155 for the problem of printing dozens of lines of distracting information
7156 about low-level system machinery as part of the top stack frame
7157 on entry to the debugger when an undefined function was called.
7158 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7159 is not reset to COMMON-LISP-USER.
7160 * Compilation of stuff related to dyncount.lisp has been made conditional
7161 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7162 smaller. The various dyncount-related symbols have been moved into
7163 a new "SB-DYNCOUNT" package.
7164 * tty-inspect.lisp has been renamed to inspect.lisp.
7165 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7166 feature has gone away. (When we eventually port to other flavors of
7167 libc and/or Unix, we'll try to make the differences between flavors
7168 invisible at the user level.)
7169 * Various other *FEATURES* tags, and/or their associated conditionals,
7170 have been removed if obsolescent, or given better documentation, or
7171 sometimes given more-mnemonic names.
7173 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7175 * tidied up "make.sh" script
7176 * tidied up system directory structure
7177 * better "clean.sh" behavior
7178 * added doc/FOR-CMUCL-DEVELOPERS
7179 * many many small tweaks to output format, e.g. removing possibly-confusing
7180 trailing #\. character in DESCRIBE-INSTANCE
7181 * (EQUALP #\A 'A) no longer signals an error.
7182 * new hashing code, including EQUALP hashing
7183 * tidied up Lisp initialization and toplevel
7184 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7185 * command line argument processing
7186 * added POSIX-GETENV function to deal with Unix-ish environment variables
7187 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7188 terminating SBCL on EOF
7189 * non-verbose GC by default
7190 * There is no more "sbcl" shell script; the sbcl file is now the C
7191 runtime executable (just like CMU CL).
7192 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7194 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7195 symbol and package information as Lisp native symbol and package objects
7196 instead of strings naming symbols and strings naming packages. This way,
7197 whenever packages are renamed (as in warm init), debug information is
7198 transformed along with everything else.
7199 * tweaked the optimization policy declarations which control the building
7200 of SBCL itself. Now, among other things, the system no longer saves
7201 source location debugging information. (This helps two problems at once
7202 by reducing SBCL size and by keeping SBCL from trying to look for its
7203 sources -- which may not exist -- when reporting errors.)
7204 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7205 debugging and testing purposes
7206 * cleaned up printing, making the printer call PRINT-OBJECT for
7207 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7208 methods, giving nearly-ANSI behavior
7209 * converted almost all special variables to use *FOO* naming convention
7210 * deleted PARSE-TIME functionality, since it can be done portably
7211 * moved some files out of cold init into warm init
7212 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7214 * regularized formatting of source files
7215 * added an install.sh script
7216 * fixed ridiculous memory usage of cross-compiler by making
7217 compiler/alloc.lisp not try to do pooling unless it can hook
7218 itself into the GC of the cross-compilation host. Now the system
7219 builds nicely on my old laptop.
7220 * added :SB-ALLOC in target-features.lisp-expr
7221 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7222 was not implemented)
7223 * re-did condition handling and note reporting in the compiler. Notes
7224 are no longer handled by signalling conditions. Style warnings
7225 and warnings are handled more correctly and reported in such a way
7226 that it's easy to find one or the other in your output (so that you
7227 can e.g. figure out which of many problems caused COMPILE-FILE to
7229 * changed the severity of several compiler warnings from full WARNING
7230 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7231 compiler note reporting so that it doesn't use the condition system
7232 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7233 COMPILE-FILE command)
7234 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7235 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7236 no longer supported, since their implementation was deeply intertwingled
7237 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7238 * removed bogus "support" for compiler macros named (SETF FOO), and
7239 removed the compiler macro for SETF INFO (but only after making a fool
7240 of myself on the cmucl-imp mailing list by posting a bogus patch for
7241 DEFINE-COMPILER-MACRO..)
7242 * Compiled files containing forms which have side effects on the Lisp
7243 reader (such as DEFPACKAGE forms) are now handled more correctly.
7244 (Compiler queuing of top level lambdas has been suppressed by setting
7245 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7246 * deleted various currently-unused source files, e.g. gengc.lisp. They
7247 may be added back at some point e.g. when porting to other architectures,
7248 but until they are it's distracting to distribute them and to try to
7250 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7251 there were so many of them they're just distractions, and UNCROSS is
7252 known to be able to handle the current sources
7253 * moved PROFILE functionality into TRACE, so that it will be clear
7254 how the wrapping and unwrapping of functions when you profile them
7255 interacts with the wrapping and unwrapping of functions when you
7256 trace them. (Actually, the functionality isn't there yet, but at least
7257 the interface specification is there. Hopefully, the functionality will
7258 arrive with some future maintenance release.)
7259 * removed host-oops.lisp
7260 * changed signature of QUIT function to allow UNIX-CODE argument
7261 * fixed READ-SEQUENCE bug
7262 * tweaked verbose GC output so that it looks more like the progress
7263 output that ANSI specifies for functions like LOAD
7264 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7265 * added <http://sbcl.sourceforge.com> to the banner information printed by