1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
3 * incompatible change: the #\` ("backquote") reader macro was reimplemented
4 to support robust pretty-printing. Reading a form involving #\` produces
5 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
6 that are not lists. Code that unportably attempts operations on
7 un-evaluated forms resulting therefrom, e.g.
8 (SUBST a b (read-from-string "`(x (,y))"))
9 might generate incorrect results and/or errors.
10 * enhancement: support for GNU/kFreeBSD x86.
11 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
12 and DEFGLOBAL variables of type fixnum.
13 * enhancement: arithmetic constant reduction is now performed on defconstant
14 constants too. (lp#1337069).
15 * bug fix: certain ftype proclamations containing &optional t &rest t no
16 longer cause subsequent definitions to signal bogus style-warnings.
17 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
18 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
21 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
22 * enhancement: GENCGC is enabled on ARM.
23 * enhancement: better error reporting for invalid calls to local functions.
24 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
26 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
28 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
30 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
32 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
33 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
34 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
36 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
37 lp#700538, lp#613876, lp#695286, lp#798388)
38 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
39 * bug fix: array type intersection handles T and unknown element types
40 correctly. (lp#1258716)
41 * bug fix: fix a corner case in array type unparsing that would result in
42 misleading translations from our internal type representation.
43 * bug fix: array-rank now sees through union and intersection types.
45 * bug fix: when DECLARE expressions are in the wrong place, be careful not
46 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
48 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
49 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
50 instead of signaling an error. (lp#1095483)
51 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
52 used to (rarely) introduce duplicate conflict markers in a single
53 TN/block pair. (lp#1327008)
55 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
56 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
57 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
58 report of the signaled conditions lists currently running threads.
59 * enhancement: ported to ARM linux.
60 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
61 * enhancement: new contrib sb-mpfr by Stephan Frank.
62 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
63 (lp#1315846, thanks to Mark Cox)
64 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
65 function-designator to a function only as needed. (lp#1012335)
66 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
67 thanks to Thomas Hlavaty)
68 * bug fix: handle --without-xxx options to make.sh more carefully.
69 (lp#1246665, thanks to Richard M Kreuter)
70 * bug fix: prevent maybe-delete-exit from doing semantically broken things
71 with local exits. (lp#309099, lp#518099, lp#533930)
72 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
75 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
76 * optimization: COERCE is now more effecient for more cases when the type is
77 known at compile-time.
79 * bug fix: correctly inherit condition initforms. (lp#1300904)
80 * bug fix: properly pprint literal functions inside nested lists.
82 * bug fix: more-correctly handle array-type unity (broken for ages, causing
83 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
84 reported by jasom in #lisp).
86 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
87 * enhancement: printing backtraces respects
88 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
90 * optimization: defstruct out-of-line accessor are now as fast as inlined.
92 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
93 instances with a test-function (reported by Vivitron in #sbcl)
94 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
95 * bug fix: Change COND error message (lp#1254511)
96 * bug fix: LOAD is no longer confused when called on a directory.
98 * bug fix: MAKE-CONDITION reports names of missing condition classes
100 * bug fix: restore building with clang. (lp#1293643)
101 * bug fix: restore building on SPARC (broken since 1.1.15).
102 * bug fix: improved FreeBSD support.
103 * bug fix: PPC floating point conversion corrupted stack.
105 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
106 * minor incompatible change: improve read/print consistency for pathnames on
107 Win32, by using the circumflex character #\^ as the escape character.
109 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
110 * enhancement: Loading fasls with symbols from an undefined package includes
111 the name of the symbol in the error message.
112 * bug fix: problems when redefining classes and doing TYPEP on classes
113 concurrently. (lp#1272742)
114 * bug fixes to the x86-64 XCHG instruction:
115 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
117 ** it was misencoded when used to exchange EAX with itself.
118 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
119 32- and 16-bit variations as NOP.
120 * bug fix: the disassembler outputs source annotations in the right place
121 and no longer randomly drops some of them. (lp#1249205)
122 * bug fix: fix commutative-arg-swap from introducing undumpable structures
123 into code, prevent code with errors from being compiled. (lp#1276282)
124 * bug fix: pathnames with :back in their directory component are succeffully
126 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
127 wrap functions around. (lp#309086)
129 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
130 * new feature: the iterative spilling/coloring register allocator developed
131 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
132 in. By default, it only activates for functions that optimize with
133 (speed 3) and (> speed compilation-speed), but setting
134 sb-regalloc:*register-allocation-method* to :iterative forces its
135 execution. The previous behaviour can be obtained by instead setting that
136 variable to :greedy. Thanks again to Google for their support, and, more
137 crucially, to Alexandra Barchunova for her hard work.
138 * optimization: make-array with known element-type and unknown dimensions is
140 * optimization: make-array with unknown element-type is faster as well.
142 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
143 :application-type argument, which can be :console or :gui. :gui allows
144 having GUI applications without an automatically appearing console window.
145 * enhancement: reduced conservativism on GENCGC platforms:
146 conservative roots must be valid-looking tagged pointers or point
147 within a code object, not merely point to within the allocated part
148 of a page, in order to pin a page.
149 * enhancement: support for "Mac Roman" external format.
150 * enhancement: encapsulation of named generic functions now happens without
151 altering the identity of the function bound to the name.
152 * bug fix: Windows applications without the console window no longer misbehave.
153 (patch by Wilfredo Velazquez, lp#1256034).
154 * bug fix: modular arithmetic optimizations do not stumble on dead branches
155 with bad constants. (reported by Douglas Katzman)
156 * bug fix: CLISP can be used again as a cross-compilation host.
157 (Thanks to Vasily Postnicov, lp#1261451)
158 * bug fix: run-program crashed with :directory nil. (lp#1265077)
160 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
161 * optimization: complicated TYPEP tests are less opaque to the type
162 propagation pass. (lp#1229340)
163 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
164 * optimization: EQUALP on structures with raw slots (double-float/complex)
165 no longer conses and is faster.
166 * optimization: RESTART-CASE expands to more compact code.
167 Thanks to Jan Moringen. (lp#1249055)
168 * enhancement: Top-level defmethod without defgeneric no longer causes
169 undefined-function warnings in subsequent forms. (lp#503095)
170 * enhancement: Better error messages for system errors on Windows.
171 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
172 Cushing. (lp#1249183)
173 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
174 specification (multiple integer arguments) and signals a continuable error
175 if the current SBCL version is lower (older) than the specification.
177 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
178 * bug fix: EQUALP now compares correctly structures with raw slots larger
180 * bug fix: contribs couldn't be built on Windows with MinGW.
181 * bug fix: Better pathname handling on Windows. (lp#922117)
182 * bug fix: OPEN reports a more meaningful error when an existing file is
183 opened for output with :if-exists :new-version. Thanks to Philip
184 Munksgaard. (lp#455381)
185 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
186 CLOS-related errors. (lp#633911)
187 * bug fix: GC deadlocks caused by concurrent consing on Windows.
189 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
190 * optimization: better distribution of SXHASH over small conses of related
192 * other improvements to SXHASH:
193 ** use the whole of the positive-fixnum range for SXHASH of fixnums
194 * enhancement: The error message when calling an undefined alien function
195 includes the name of the function on x86-64.
196 * enhancement: sb-ext:run-program now supports :environment on Windows.
197 * enhancement: ASDF is no longer required to load contribs at runtime.
199 * enhancement: when called with a symbol, FIND-RESTART no longer calls
200 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
201 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
202 clusters better in some cases
203 * enhancement: SOME/ANY/other quantification higher-order functions no
204 longer cons. (lp#1070635)
205 * bug fix: forward references to classes in fasls can now be loaded.
207 * bug fix: don't warn on a interpreted->compiled function redefinition
208 from the same location. (patch by Douglas Katzman, lp#1042405)
209 * bug fix: Create vectors of proper internal length when reading literal
210 vectors from FASLs. (Reported by Jan Moringen)
211 * bug fix: COMPILE can now successfully compile setf functions.
212 (Reported by Douglas Katzman)
213 * bug fix: run-program performs more correct escaping of arguments on
214 Windows. (lp#1239242)
215 * bug fix: function-lambda-expression on generic functions returns the
217 * bug fix: (the [type] [constant]) now warns when [constant] matches
218 [type] except for the number of values. (Reported by Nathan Trapuzzano
220 * bug fix: signal errors in required cases of slot-definition initialization
221 protocol. (lp#309072)
222 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
223 (thanks to Stelian Ionescu, lp#1242643)
224 * bug fix: when given a restart object, FIND-RESTART checks whether the
225 restart is active and, when a condition is supplied, whether the restart
226 is associated to a different condition (lp#774410)
228 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
229 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
230 shutdown(3). (thanks to Jan Moringen, lp#1207483)
231 * enhancement: document extensible sequences. (thanks to Jan Moringen,
233 * optimization: EQUAL and EQUALP transforms are smarter.
234 (thanks to Elias Martenson, lp#1220084)
235 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
236 * bug fix: probe-file now can access symlinks to pipes and sockets in
237 /proc/pid/fd on Linux. (reported by Eric Schulte)
238 * bug fix: SBCL can now be built on Solaris x86-64.
239 * bug fix: Floating point exceptions do not persist on Solaris anymore.
240 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
241 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
243 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
244 (thanks to Stephan Frank)
245 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
246 (thanks to Stephan Frank, lp#1206191)
247 * bug fix: sb-safepoint can now reliably handle signal interruptions of
248 foreign code. (lp#1133018)
249 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
250 constructors no longer fails to merge actual and default initargs
251 (thanks to Jan Moringen, lp#1179858)
252 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
253 constructors handles non-KEYWORD initialization arguments more correctly.
254 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
255 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
256 * bug fix: class definitions with CPLs inconsistent with their metaclasses
257 are less likely to destroy the object system's integrity. (lp#309076)
258 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
259 standard. (lp#1203585, thanks to Jan Moringen)
260 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
261 settings. (lp#1023721)
262 * bug fix: getting the order of arguments to
263 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
264 rather than a failed AVER. (reported by Paul Nathan)
265 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
266 arguments during copying on x86 and x86-64; it may still happen on other
267 platforms when there are more fixed arguments than stack slots.
268 (reported by Jan Moringen)
270 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
271 * enhancement: support building the manual under texinfo version 5.
273 * enhancement: Windows builds no longer display the "Kitten of Death" message.
274 A warning is instead appended to the regular banner, and may be muted with
275 --noinform. (lp#728247)
276 * enhancement: support building under new linker handling of syscalls under
277 NetBSD. (thanks to Robert Swindells)
278 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
279 (regression since 1.1.9)
280 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
281 compiler macro. (thanks to Douglas Katzman).
282 * bug fix: signal a warning when defining a setf-function when a
283 setf-expander is already present. (thanks to Douglas Katzman).
284 * bug fix: improved threading on PPC.
285 * bug fix: ROOM works again on Windows. (lp#1206456)
286 * bug fix: Streams were flushed even when there was one byte still left in
287 the buffer. (lp#910213)
288 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
289 either NIL or :ERROR. (reported by Jan Moringen)
291 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
292 * enhancement: ASDF has been updated to 3.0.2.
293 * optimization: stack frames are packed more efficiently on x86oids, which
294 ought to reduce the frequency of Methuselahn conservative references (it
295 certainly helps with gc.impure.lisp / BUG-936304 on x86).
296 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
297 recognized in modular arithmetic contexts, and compile to native negate,
298 rather than going through bignums only to keep the low bits.
299 * bug fix: Compiling potential modularic arithmetic forms does not cause type
300 errors when some integer types lack lower or upper bounds. (lp#1199127)
301 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
302 bitwidth before being used in a non-modular context. (lp#1199428)
303 * bug fix: Multiple catch/unwind blocks in a single function are now
304 allocated in the right stack order on win32. (lp#1072739)
306 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
307 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
308 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
309 * enhancement: disassemble now annotates some previously missing static
310 functions, like LENGTH.
311 * enhancement: clean.sh now also cleans doc/internals.
312 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
313 print a symbol with a package prefix.
314 * enhancement: The debugger and backtracing are more robust against buggy
315 PRINT-OBJECT methods.
316 * optimization: calls to static functions on x86-64 use less instructions.
317 * optimization: compute encode-universal-time at compile time when possible.
318 * optimization: when referencing internal functions as #'x, don't go through
319 an indirect fdefn structure.
320 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
321 * optimization: (mod fixnum) type-checks are performed using one unsigned
322 comparison, instead of two.
323 * optimization: enable more modular arithmetic transforms in the presence of
325 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
326 when the result is known to be negative.
327 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
328 * optimization: comparisons between rationals and constant floats or between
329 integers and constant ratios are now converted to rationals/integers at
331 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
332 * bug fix: problems with NCONC type derivation (reported by Jerry James).
333 * bug fix: EXPT type derivation no longer constructs bogus floating-point
334 types. (reported by Vsevolod Dyomkin)
335 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
336 addrinfo. (lp#1187041, patch by Jerry James)
337 * bug fix: uninitialized type-error conditions can now be printed.
339 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
340 listening, allowing several tests to run in parallel.
341 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
342 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
344 * bug fix: Specialised SIMD-PACK types can be negated.
345 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
346 reported by Eric Marsden)
347 * bug fix: FP return values from foreign calls are always rounded to single
348 or double float precision on x87.
349 * bug fix: Known-safe vector access on x86oids should not fail spuriously
350 when the index is of the form (+ x constant-positive-integer).
351 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
352 * bug fix: backtrace printer no longer tries to create very large lists when
353 the arg-count register is clobberred by other code. (lp#1192929)
354 * bug fix: x86 should never signal an FP exception while boxing an FP value,
355 a situation that lands us into ldb.
357 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
358 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
359 ROOM, plus a few SB-INTROSPECT functions) has been completely
360 rewritten; it may now exhibit different bugs than before.
361 * new feature: minimal runtime/compiler intrastructure support for SSE
362 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
363 feature :sb-simd-pack. This should enable intrinsics extensions as
364 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
365 for maintaining a branch for so long.
366 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
367 the working directory of the spawned process.
368 (lp#791800) (patch by Matthias Benkard)
369 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
370 stack-allocated on PPC.
371 * enhancement: "fixed objects" can now be stack-allocated on PPC.
372 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
373 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
374 also returns VOPs which do not translate any functions, and finds
375 defoptimizer types ir2convert and stack-allocate-result.
376 * enhancement: better type derivation for APPEND, NCONC, LIST.
378 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
379 heap in a manner similar to the GC rather than its previous ad-hoc
380 scheme, and is therefore no less and possibly more accurate.
381 * fixes and enhancements related to Unicode:
382 ** the character database information has been updated to Unicode 6.2;
383 ** support for canonical and compatibility decomposition of characters has
384 been added, along with support for primary composition;
385 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
386 NFKD) has been included;
387 ** querying the character database for code points not defined by Unicode
388 gives less wrong answers (lp#1178038, reported by Ken Harris)
389 * enhancement: print intermediate evaluation results for some ASSERTed
390 expressions. (lp#789497) (patch by Alexandra Barchunova)
391 * enhancement: x86-64 disassemblies are annotated with unboxed constant
392 values when there are references to (RIP-relative) unboxed constants.
393 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
394 of quadratically with the size of the input in the worst case.
396 * bug fix: handle errors when initializing *default-pathname-defaults*,
397 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
398 decoding errors, or directories being deleted.
399 * bug fix: Loading a core with a discontiguous dynamic space now correctly
400 computes the amount of dynamic space used.
401 * bug fix: disassembler missing ",8" on SHLD
402 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
403 that provide an "invalid" stack frame link for the signal handler
404 itself now use the saved-fp-and-pc mechanism to pick up from the stack
405 frame in the interrupt (signal) context. This is known to affect
406 threaded FreeBSD/x86-64.
407 * bug fix: some LOOP statements couldn't be compiled.
409 * bug fix: sb-sequence:dosequence works on literal vectors.
410 * bug fix: errors in generic arithmetic show the assembly routine's
411 caller on x86 and x86-64. (lp#800343)
412 * bug fix: Compile-time type errors should never result in COMPILE-FILE
414 * bug fix: Known bad local calls do not cause strange failures when
415 emitting or dumping code. (lp#504121)
416 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
417 codegen errors: type checks are inserted as necessary. (lp#1177703)
418 * bug fix: Unsigned modular arithmetic is correctly converted into signed
419 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
420 * bug fix: a combination of inlined local function with &optional and
421 recursion no longer causes undescriptive compiler errors. (lp#1180992)
422 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
423 when testing for non-zero-ness.
424 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
426 * bug fix: Type mismatch for the value of conditional expressions are
427 correctly reported when detected at compile-time, instead of complaining
428 about a constant NIL (similar for non-EQ-comparable catch tags).
429 * bug fix: Referring to INLINE global functions as values should not result
430 in a compilation failure. (lp#1035721)
431 * optimization: faster ISQRT on fixnums and small bignums
432 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
433 * optimization: On x86-64, the number of multi-byte NOP instructions used
434 for code alignment is now always minimal.
435 * optimization: On 64-bit targets, the compiler generates much faster
436 code for type checks for types known at compile time that are smaller
437 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
438 their COMPLEX variants.
439 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
440 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
441 * optimization: ROOM no longer conses so egregiously on non-x86oid
443 * optimization: associative bitwise operations reassociate patterns like
444 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
446 * optimization: quasiquote expressions now perform more constant folding,
447 instead of consing equal lists at runtime. (lp#1026439)
448 * optimization: local call analysis of inlined higher-order function
449 should converge more quickly, resulting in better code for complex
451 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
452 integer constants are handled more cleverly, especially when they
453 can be represented as sign-extended (signed-byte 32). (Based on a
454 patch by Douglas Katzman)
455 * optimization: IF/IF conversion should reliably result in sane code
456 when (some of) the results of the inner IF are always false or
458 * optimization: On x86oids, variable right shifts of machine words are
459 compiled into straight SAR/SHR, instead of going through the generic
462 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
463 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
465 * bug fix: :allocation slot option works for condition slots
467 * bug fix: redefining conditions does not lead to multiple evaluations of
468 hairy slot initfunctions anymore (lp#1164969)
469 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
471 * bug fix: function constants now work as initforms and default initarg
472 values of conditions (lp#539517)
473 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
474 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
475 * bug fix: no more bogus ## references when pretty printing backquoted
476 forms with non-trivial structure sharing. (lp#1161218)
477 * bug fix: Don't signal an error on (setf (documentation nil 'function)
478 "doc"). Signal a style-warning instead when trying to set documentation
479 of NIL for all other documentation types. (Reported by Zach
480 Beane; regression since 2e52fa05.)
481 * bug fix: modular arithmetic involving large constants and conditionals
482 should no longer result in spurious dead code elimination. (Reported by
484 * bug fix: our mach exception handler can seemingly called very early in
485 the program execution process on OS X 10.8.0. Try and handle that case
486 robustly, without potentially leaking mach ports too much.
487 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
489 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
490 * enhancement: the continuable error when defknown-ing over extant
491 fndb entries can be ignored by passing :overwrite-fndb-silently t
492 as a keyword argument to sb-c:defknown (after attributes). Useful
493 to allow defknown to be re-loaded. Use with :allow-other-keys t
494 for backward compatibility.
495 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
497 * bug fix: Prevent a make-array transform from modifying source forms
498 causing problems for inlined code. Thanks to Bart Botta.
499 (regression since 1.0.42.11-bis)
500 * bug fix: clear-output calls the correct gray stream routine,
501 sb-gray:stream-clear-output. (lp#1153257)
502 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
504 * bug fix: Better error messages for package operations (lp#1154776)
505 * bug fix: delete-package on a nonexistent package should signal a cerror.
506 (regression since 1.0.37.44).
507 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
508 (lp#1154946, lp#1072112)
509 * bug fix: compiling make-array no longer signals an error when the
510 element-type is an uknown type, a warning is issued instead.
511 Thanks to James Kalenius (lp#1156095)
512 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
513 produces wrong results for some inputs. (Thanks to Jan Moringen.)
516 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
517 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
519 * new feature: package local nicknames. See manual for details.
520 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
521 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
522 * enhancement: easier to use restarts for resolving name-conflicts
523 resulting from IMPORT, EXPORT, or USE-PACKAGE.
524 * enhancement: variant DEFPACKAGE forms now signal a full error with
525 restarts provided for resolving the situation. (lp#891351)
526 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
527 DEFPACKAGE forms can now signal a full error with restarts provided for
528 resolving the situation. See manual for details. (lp#891351)
529 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
530 (Thanks to Anton Kovalenko.) (lp#1102748)
531 * enhancement: backtrace improvements
532 ** secondary CLOS dispatch functions have better debug names (lp#503081)
533 ** easier to read method names in backtraces. See
534 SB-DEBUG:*METHOD-FRAME-STYLE*.
535 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
536 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
537 SB-DEBUG:BACKTRACE-AS-LIST.
538 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
539 information is available in less intrusive form as frame annotations.
540 * enhancement: SB-POSIX now provides MAP-ANON.
541 * enhancement: test-suite results are colorized, failures in red, unexpected
542 success in green. Works on Windows and on terminals with ANSI escape code
543 support. Can be disabled with --no-color.
544 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
545 (thanks to James M. Lawrence)
546 * bug fix: no more unused variable style warnings from RESTART-CASE
547 macroexpansion (lp#1113859)
548 * bug fix: no more unused variable style warnings when loading
549 sb-bsd-sockets.asd (lp#1114681)
550 * bug fix: deleting a package removes it from implementation-package
551 lists of other packages.
552 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
553 This does not fix the occasional "interrupt already pending" issue, though.
554 * bug fix: (setf (documentation 'x 'function)) and
555 (setf (documentation #'x t)) set documentation in different places.
556 (regression since 1.0.43.63)
557 * bug fix: build on newer glibc. (lp#1095036)
559 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
560 * optimization: LOOP expressions using "of-type character" have slightly
561 more efficient expansions.
562 * bug fix: very long (or infinite) constant lists in DOLIST do not result
563 in very long compile times or heap exhaustion anymore. (lp#1095488)
564 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
565 * bug fix: adjust-array ignored :initial-element for simple-vectors.
567 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
568 longer cause infinite loops (on circular data) or violate eqlity
569 constraints. (lp#1099708)
570 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
572 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
573 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
575 * enhancement: support for C-c to interrupt the foreground thread
576 on Windows. (Thanks to Anton Kovalenko.)
577 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
578 * enhancement: Safepoint builds on POSIX platforms can now optionally be
579 built without pseudo-atomic sequences and their run-time overhead.
580 * enhancement: Threads created outside of Lisp can enter Lisp through
581 alien callbacks and appear as Lisp threads for the duration of that
582 function invocation. On safepoint builds only.
583 * enhancement: Miscellaneous improvements to namestrings and underlying
584 calls to OS functions for file system access on Windows. (Thanks to
586 * enhancement: The MSI installer support for Windows now uses Windows
587 Installer XML at least version 3.5 and includes various usability
588 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
589 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
590 on Windows. (Thanks to Anton Kovalenko.)
591 * enhancement: The Windows backend now supports the x86-64 platform.
592 (Thanks to Anton Kovalenko.)
593 * bug fix: fasls are now once again directly executable (on platforms
594 supporting shebang lines, with a suitably-installed sbcl).
595 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
596 * bug fix: Fix CAS access to slots of direct instances of structure classes
597 in the presence of subclasses sharing the same conc-name.
598 * bug fix: Logical pathname namestrings on Windows have been changed to
599 be lower-case, to minimize differences between POSIX and Windows.
601 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
602 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
603 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
604 (NT 5.0) is no longer being maintained.
605 * notice: Starting with this version, SBCL on Windows no longer supports
606 building with disabled thread support.
607 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
608 * enhancement: New feature sb-dynamic-core allows the runtime to be
609 rebuilt or relocated without requiring changes to the core file on
610 all linkage table platforms. Required on Windows. (Thanks to Anton
612 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
613 * enhancement: I/O on Windows unnamed pipes is interruptible
614 asynchronously using interrupt-thread, timers when running on Windows NT
615 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
617 * enhancement: Support for the experimental safepoint-based stop-the-world
618 protocol on the PowerPC platform.
619 * bug fix: Non-blocking reads from the Windows console were not necessarily
620 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
621 * bug fix: stability of threads on Windows has been improved upon through
622 an updated stop-the-world protocol (thanks to Anton Kovalenko).
624 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
625 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
626 (COMPILE and COMPILE-FILE still do.)
627 * optimization: the SPARC backend now supports the precise generational
628 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
629 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
630 * enhancement: add experimental support for the SB-THREAD feature and the
631 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
632 Threads are enabled by default, and this version of SBCL is considered
633 to be the last and final release to officially support building with
635 * optimization: The compiler no longer rotates loops in some cases where
636 this transformation actually lead to worse code being generated.
637 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
638 symbol-macros by lexical bindings.
639 * bug fix: stack allocation was prevented by high DEBUG declaration in
641 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
642 (thanks to SANO Masatoshi)
643 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
644 :JUNK-ALLOWED was true.
645 * bug fix: type derivation inferred overly conservative types for
646 unions of array types. (lp#1050768)
648 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
649 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
650 source annotation of DISASSEMBLE output. Defaults to T.
651 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
652 WAIT-P argument added to WITH-RECURSIVE-LOCK.
653 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
655 * enhancement: Optional features (not enabled by default) allow the
656 use of signals for inter-thread synchronization to be reduced on certain
657 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
658 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
659 to test these experimental features. Known remaining bugs include minor
660 thread safety issues, less timely freeing of memory by GC, and certain
661 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
662 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
663 comparisons, particularly on almost-sorted inputs.
664 * bug fix: Reading floats with large exponents no longer takes too much time
665 before reporting that the exponent is too large.
666 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
667 correctly when the received datagram is larger than the provided buffer.
668 (lp#1023438, thanks to Robert Uhl)
669 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
670 a SYMBOL-VALUE form with a constant symbol argument.
671 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
672 into a DEFCAS defined place was used as the place.
673 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
674 for from bit-vectors.
675 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
676 lead to internal errors or crashes (lp#1058799).
677 * documentation: a section on random number generation has been added to the
680 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
681 * enhancement: implicit generic function warnings now specify the package
682 in which the new generic function is being created.
683 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
684 updates of CAS-able places (similar to Clojure's swap!).
685 * enhancement: run-program no longer decodes and re-encodes environment when
686 :environment argument is not provided. (lp#985904)
687 * enhancement: errors during compiler-macro expansion no longer cause
688 runtime errors, only a compile-time warning, otherwise behaving as if
689 the compiler macro had declined to expand.
690 * optimization: On x86-64, code alignment of block headers is done with
691 multi-byte NOPs now instead of repetitions of the single-byte NOP.
692 * optimization: MAP-INTO is substantially faster when the target sequence is
693 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
694 thanks to James M. Lawrence)
695 * optimization: the compiler no longer heap-conses to check exits in cases
696 where the exit function is dynamic extent, or when it can prove the exit
697 function cannot escape. (lp#1002534)
698 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
699 element type, and vectors that aren't SIMPLE-ARRAYs.
700 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
701 speed (around 1/3 the time in some cases), and a little better in terms of
702 comparison calls. (Thanks to Takeru Ohta)
703 * bug fix: On SPARC, a limitation on the number of code constants emittable
704 by the compiler has been lifted, allowing certain long functions to
705 compiled and assembled which had previously been unsupported; fixes
706 cl-bench on this ISA (lp#1008996).
707 * bug fix: potential for infinite recursion during compilation of CLOS slot
708 typechecks when dependency graph had loops. (lp#1001799)
709 * bug fix: error forms reported with some program-errors were not escaped
711 * bug fix: functions from EVAL are now on more equal footing with functions
712 from COMPILE. (lp#1000783, lp#851170, lp#922408)
713 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
714 objects as its :METHOD-COMBINATION argument, not just lists designating
715 method combinations. (lp#936513)
716 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
718 * bug fix: restore build on solaris/sparc. (lp#1008506)
719 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
720 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
721 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
722 as keyword arguments no longer accidentally match unevaluated symbols
724 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
725 parameter was zero, now it signals an error. (lp#905817, fixed since
727 * bug fix: run-program with :pty t no longer makes the pty as the process's
729 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
732 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
733 * RANDOM enhancements and bug fixes:
734 ** bug fix: the range and distribution of random integers could be
735 catastrophically wrong when the compiler derived the type of its
736 argument as a disjoint set of small integers.
737 ** bug fix: the distribution of random integers is now completely
738 uniform even when the specified limit is not a power of two.
739 (Previously some values could be about 0.1 % more probable than
740 others in the worst case.) (lp#309467)
741 ** RANDOM on large integer arguments is generally faster and conses
742 less than before; this is visible for fixnums above a length of
743 about 24 bits, but extremely so for bignums: the old implementation
744 used time and space quadratical in the size of the argument there,
745 the new one is linear.
746 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
747 main entry point, SB-EXT:QUIT is deprecated.
748 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
749 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
750 * enhancement: FASL loading no longer grabs the world-lock.
751 * enhancement: GENCGC reclaims space more aggressively when objects being
752 allocated are a large fraction of the total available heap space.
754 * enhancement: backtraces show the correct number of arguments for frames
755 called with too many arguments.
756 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
758 * enhancement: ASDF has been updated 2.21.
759 * optimization: fewer uses of full calls to signed modular functions.
761 * optimization: typechecking alien values is typically 5 x faster.
762 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
764 * bug fix: file compilation performance issues when dumping subtypes
765 of CHARACTER (lp#994487)
766 * bug fix: fixed disassembly of some SSE instructions on x86-64.
767 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
768 OPEN. (lp#969352, thanks to Kambiz Darabi)
769 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
771 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
772 classoid even if X was not the proper name of the class. (lp#941102)
773 * bug fix: declaration leakage between lexical environments due to careless
774 use of NCONC in MAKE-LEXENV. (lp#924276)
775 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
776 *default-pathname-defaults* contains NAME or TYPE components.
777 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
778 from CL package, e.g. (loop . 10).
779 * bug fix: run-program with existent or non-existent files for :output or
780 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
781 returns NIL instead of signalling an obscure error.
782 * bug fix: fix miscompilation of some logand forms with large constant
783 arguments. (lp#974406)
784 * bug fix: account for funcallable-instance objects properly in ROOM.
785 * bug fix: incorrect octets reported for c-string decoding errors.
787 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
789 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
790 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
791 allowing faster release of memory back to the OS. (lp#991293)
792 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
793 existing deadline for the dynamic scope of its body.
794 * bug fix: compiler-internal interval arithmetic needed to be more
795 conservative about open intervals when operated on by monotonic but not
796 strictly-monotonic functions. (lp#975528)
797 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
798 it's also slightly faster. (lp#998926)
799 * bug fix: better error messages for malformed declarations.
801 * bug fix: define-condition didn't return the name of the defined condition.
803 ** improved docstrings: REPLACE (lp#965592)
805 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
806 * bug fix: fix copy-structure. When copying from stack to heap, garbage
807 could end up in the heap making GC unhappy.
808 (Thanks to James Knight, lp#911027)
810 ** SBCL can now be built using Clang.
811 ** ASDF has been updated 2.20.
812 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
813 * bug fix: don't complain about a too-hairy lexical environment for inlining
814 when the function has never been requested for inlining. (lp#963530)
816 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
817 * enhancements to building SBCL using make.sh:
818 ** --fancy can be specified to enable all supported feature enhancements.
819 ** --with-<feature> and --without-<feature> can be used to specify
820 which features to build with.
821 ** --arch option can be used to specify the architecture to build for.
822 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
823 full-blows cross-compilation.)
824 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
825 which allows specifying name of the default interning package for the
827 * enhancement: when *READ-EVAL* is true, arrays with element type other than
828 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
829 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
830 null alien when malloc() fails. (lp#891268)
831 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
832 conditions can be conveniently accessed through function with the same
833 name, analogously to CONTINUE.
834 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
835 from the printer by type, causing an error marker to be printed instead.
836 (Thanks to Attila Lendvai)
837 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
838 generally behave better when errors occur during printing.
839 * enhancement: the test runner now takes a --report-skipped-tests argument
840 to report the individual tests skipped as well as the number of skipped
842 * enhancement: undefined functions now appear in backtraces as ("undefined
843 function") instead of ("bogus stack frame") on x86oids.
844 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
845 deadlock errors are reported in an easier-to-decipher manner.
846 * enhancement: DESCRIBE on type designators reports the expansion in more
848 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
849 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
850 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
851 * enhancement: better disassembly of segment-prefixes on x86 and other
852 instruction prefixes (e.g. LOCK) on x86 and x86-64.
853 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
854 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
855 * optimization: SUBSEQ on vectors of unknown element type is substantially
857 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
858 be stack-allocated. (lp#902351)
859 * optimization: the compiler is smarter about representation selection for
860 floating point constants used in full calls.
861 * optimization: the compiler no longer refuses to coerce large fixnums to
862 single floats inline, except on x86 where this limitation is still
864 * optimization: truncation operations on integers with constant divisor
865 arguments 1 and -1 are optimized away.
866 * bug fix: deadlock detection could report the same deadlock twice, for
867 two different threads. Now a single deadlock is reported exactly once.
868 * bug fix: interval-arithmetic division during type derivation did not
869 account for signed zeros.
870 * bug fix: compiler error when typechecking a call to a function with
871 non-constant keyword arguments.
872 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
873 * bug fix: condition slot accessors no longer cause undefined function
874 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
875 form that defines them. (lp#896379)
876 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
878 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
879 bogusly report NIL, T.
880 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
881 required arguments ignored and performed assignments to others.
883 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
884 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
885 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
886 * bug fix: redefining a function whose previous definition contained an
887 unknown type no longer causes a style-warning. (lp#806243)
888 * bug fix: undefined functions now appear in backtraces as ("undefined
889 function") instead of ("bogus stack frame") on non-x86oids.
890 * bug fix: backtraces are no longer cut off at ("undefined function") when
891 called under certain circumstances (involving a caller-allocated stack
893 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
894 systems. (regression since 1.0.53)
895 * bug fix: GC deadlocks from dladdr() on certain platforms.
896 * bug fix: broken standard streams no longer automatically cause recursive
897 errors on debugger entry.
898 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
899 (regression since 1.0.53)
900 * bug fix: attempts to stack allocate a required argument to a function with
901 an external entry point caused compiler-errors.
902 * bug fix: compiler notes for failed stack allocation for a function argument
903 no longer claim to be unable to stack allocate the function.
904 * bug fix: COERCE now signals a type-error on several coercions to
905 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
906 * bug fix: missing failure-to-stack-allocate compiler notes for some
907 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
908 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
910 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
912 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
913 * minor incompatible changes:
914 ** RENAME-FILE on a symbolic links used to rename the linked-to file
916 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
917 directory, but now signal an error instead. Use TRUENAME to resolve the
918 pathname if you wish to delete the linked directory, and DELETE-FILE if
919 you wish to delete the
920 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
921 symbols associated with it will trigger a compile-time warning.
922 * thread-related enhancements:
923 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
924 Many thanks to generous donors!)
925 ** Threading is now more reliable on non-Linux platforms. We still don't
926 consider threads on non-Linux platforms good enough to enable them by
927 default, but they're in a clearly better shape now.
928 ** Deadlines supported now on all platforms.
929 ** All blocking functions in the threading API now have a :TIMEOUT
931 ** Semaphore notification objects have been added to SB-THREAD.
932 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
933 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
934 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
935 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
936 using an API anologous to defining new SETFable places.
937 * GC-related enhancements and bug fixes:
938 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
939 and Gb suffixes. Default is megabytes as before.
940 ** on GENCGC targets, the default dynamic space size is now 512Mb for
941 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
942 exception, defaulting to mere 444Mb to fit under default ulimits.) The
943 new defaults are in place to prevent hitting swap on low-end systems.
944 Use build-time option --dynamic-space-size to build an SBCL with
945 another default, or the runtime option to adjust the size at startup: a
946 good size is at most equal to the amount of physical memory the system
948 ** on GENCGC targets, nursery and generation sizes now default to 5% of
950 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
951 refuses to create SIMPLE-FUN objects.
952 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
954 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
955 validation of pointer objects as GENCGC does, instead of a
956 comparatively weak bounds-check against the heap spaces.
957 * SB-BSD-SOCKETS bug fixes:
958 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
959 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
960 systems with getaddrinfo().
961 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
962 safe outside systems with getaddrinfo().
963 * enhancement: ASDF has been updated 2.019.
964 * enhancement: special-case TCO prevention for functions which never return
965 extended to untrusted types, keeping one more frame's worth of debug
966 information around in many cases.
967 * enhancement: debug-names of anonymous and local function are more
968 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
969 * enhancement: on win32, ABS of complex floats guards better against
970 overflows. (lp#888410)
971 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
972 process exiting with code 1. (lp#676987)
973 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
974 the system where on the filesystem the SBCL sources themselves are
975 located. (Thanks to Zach Beane)
976 * enhancement: the compiler is now able to derive tighter bounds for
977 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
978 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
979 correctly, even on wide-fixnum builds. (lp#887220)
980 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
981 resolved to directories.
982 * bug fix: type mismatch when assigning to lexical variables no longer
983 result in fasl-dumping internal type objects. (lp#890750)
984 * bug fix: type mismatch on (SETF AREF) and function return values no
985 longer result in fasl-dumping internal type objects.
986 * bug fix: With several combinations of argument types, for example (EXPT
987 <integer> <(complex double)>), EXPT now uses double-precision throughout
988 instead of partially calculating only to single-precision. (lp#741564;
989 thanks to Lutz Euler)
990 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
991 objects when interrupted by GC on PPC.
993 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
994 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
995 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
996 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
997 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
998 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
999 targets is now 63 bits (up from 61).
1000 * enhancement: DESCRIBE now reports a lambda-list and source location
1001 for complext setf-expanders.
1002 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1003 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1004 of multiple-valued places to be set to NIL, instead of signalling an
1005 error (per a careful reading of CLHS 5.1.2.3).
1006 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1007 * bug fix: repair crash in x86oid darwin signal handling emulation
1008 when built with certain compilers.
1009 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1010 rotation arguments on x86-64. (lp#882151)
1011 * bug fix: low-level control flow optimisations could result in bogus
1012 code in functions with tail and non-tail calls to local functions on
1013 x86oids. (lp#883500)
1014 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1015 to emit literal characters > (code-char 4095), for comparisons with
1016 constant characters.
1017 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1018 on 64 bit platforms. (lp#881445)
1019 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1020 delete the wrong file when using relative pathnames. (lp#882877)
1021 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1022 sequences and :KEY NIL.
1024 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1025 * enhancement: ASDF has been updated to version 2.017.
1026 * enhancement: the --core command line option now accepts binaries with
1028 * enhancement: when built with :sb-core-compression, core files (regular
1029 or executable) can be compressed with zlib. Use the :COMPRESSION
1030 argument to SAVE-LISP-AND-DIE to specify a compression level.
1031 * enhancement: --[no-]merge-core-pages determines whether the runtime
1032 hints the operating system that identical core pages between SBCL
1033 processes should share the same physical memory. Default is to only
1034 enable this for compressed cores.
1035 * optimization: SLEEP no longer conses.
1036 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1037 or bit-vectors when using the standard pretty-print dispatch table.
1038 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1040 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1041 AREF, CHAR, etc. (lp#826971)
1042 * bug fix: compiler-errors causes by integer arguments with composed of
1043 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1044 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1045 expressions. (lp#770184)
1046 * bug fix: complex single float literals are correctly aligned when used
1047 as arguments of arithmetic operators.
1048 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1049 fixnum is correct. (reported by Peter Keller)
1050 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1051 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1053 * bug fix: redefining classes such that slots with custom allocation are
1054 added or removed works again.
1056 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1057 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1058 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1059 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1060 * enhancement: added support for socket keepalive timeout intervals
1061 and probe counts on Linux.
1062 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1063 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1064 * enhancement: added new toplevel options --quit and --non-interactive
1066 * enhancement: the Windows port of SBCL now builds and runs on Wine
1067 (thanks to Anton Kovalenko).
1068 * enhancement: more, and more correct, SSE instruction definitions on
1069 x86-64 (thanks to Alexander Gavrilov).
1070 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1071 to help the processor execute spin loops, when applicable. Currently
1072 implemented for x86 and x86-64.
1073 * optimization: unsigned integer divisions by a constant are implemented
1074 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1075 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1076 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1077 instructions. (lp#814688)
1078 * bug fix: COERCE to unfinalized extended sequence classes now works.
1079 (reported by Jan Moringen; lp#815155)
1080 * bug fix: a compiler error during typecheck generation, reported by Eric
1081 Marsden. (lp#816564)
1082 * bug fix: obsolete instance protocol fires when shared slots are added
1084 * bug fix: fixed-format floating point printing with scaling factors.
1086 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1087 backtraces. (lp#818460)
1088 * bug fix: better backtraces for interrupted syscall frames on x86.
1090 * bug fix: SSE comparison instructions can be disassembled even when one
1091 operand is in memory. (lp#814702)
1092 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1093 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1094 type information associated with the VALUES form.
1095 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1097 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1098 first write (lp#561642).
1099 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1100 * bug fix: bound propagation involving conversion of large bignums to
1101 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1103 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1104 functions; reported by Lutz Euler (lp#826459).
1105 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1108 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1109 * enhancement: errors from FD handlers now provide a restart to remove
1110 the offending handler.
1111 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1113 * enhancement: location of user or system initialization file can now easily
1114 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1115 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1116 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1117 the thunk, as a keyword argument, :arguments.
1118 * enhancement: constraint propagation is simplified (and sped up) when
1119 COMPILATION-SPEED > SPEED.
1120 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1121 * enhancement: debugger understands &MORE arguments better.
1122 * optimization: extracting bits of a single-float on x86-64 has been
1123 optimized. (lp#555201)
1124 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1125 when (> SPEED SPACE).
1126 * optimization: local call trampolines (x86 and x86-64) are emitted
1128 * optimization: implicit value cells for dynamic-extent closed-over bindings
1129 on x86 and x86-64 can hold unboxed values as well.
1130 * meta-optimization: improved compilation speed, especially for large
1131 functions. (lp#792363 and lp#394206)
1132 * bug fix: bound derivation for floating point operations is now more
1133 careful about rounding possibly closing open bounds. (lp#793771)
1134 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1135 backwards incompatible change in 1.0.48.27)
1136 * bug fix: occasional debugger errors in when a type-error occured in a
1137 function with dynamic-extent &rest list.
1138 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1139 boa-construtors can be used to initialized structure slots.
1140 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1141 (lp#795705, regression)
1142 * bug fix: DIRECTORY works better on logical pathnames.
1143 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1144 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1145 * bug fix: the compiler no longer constant-folds NaNs in
1146 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1147 * bug fix: FORMAT now handles floating point rounding correct, eg.
1148 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1150 * bug fix: style warning during lambda-list introspection of generic
1151 functions with both optional and key argments.
1152 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1153 folding. (lp#729765)
1154 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1157 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1158 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1159 interrupts for its body.
1160 * enhancement: source locations are now available for files loaded as
1161 source, compile-time-too evaluation, and initialization files.
1162 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1163 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1164 when a temporary file is used for compilation.
1165 * enhancement: ASDF has been updated to version 2.015.3.
1166 * enhancement: backtraces involving frames from the default evaluator are
1168 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1170 * enhancement: more informative compile-time warnings and runtime errors for
1171 type-errors detected at compile-time.
1172 * enhancement: deadlock detection for mutexes and spinlocks.
1173 * enhancement: dynamic-extent for &rest lists stack allocate only their
1174 spines, not their argumets. While portable code should not rely on this,
1175 particularly in combination with inlining, it should make dynamic-extent
1176 easier to use safely.
1177 * enhancement: SB-POSIX improvements:
1178 ** WNOHANG and WUNTRACED are exported.
1179 ** SYSCALL-ERROR now also provides the name of the failing system call.
1180 * enhancement: --script improvements:
1181 ** errors on standard input, output, and error streams are handled and
1182 cause scripts to exit silently, making them easier to use in shell
1184 ** backtraces from scripts now go to standard error instead of the
1185 terminal even if one is available.
1186 ** --script can be an argument, causing the script to be loaded from
1188 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1189 strings to foreign memory.
1190 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1191 a file, making it easier to understand heap dynamics.
1192 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1193 allows the compiler to automatically elide rest-list allocation so long as
1194 the call sites are in functions that the compiler knows cannot escape.
1196 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1197 especially in safe code when none of the required arguments have changed
1199 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1200 uninterruptible, as well as blocking reads from socket streams created
1201 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1202 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1203 from the to-char if the from-char is not a dispatch-macro character.
1204 * bug fix: references to undefined variables in function calls that are
1205 optimized away now signal a runtime error. (lp#722734)
1206 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1207 types from a function defined in the same file. (regression from
1209 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1211 * bug fix: spurious errors during QUIT when standard streams were closed.
1213 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1214 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1215 years, is now no longer supported.
1216 * enhancement: read() and write() have been added to SB-POSIX.
1217 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1218 accurately, allowing better typechecking of call-sites.
1219 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1220 are no longer caught. (reverted to pre 1.0.34 behaviour)
1221 * optimization: slightly faster ISQRT. (lp#713343)
1222 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1223 * bug fix: TRACE behaves better when attempting to trace undefined
1224 functions. (lp#740717)
1225 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1226 to (FUNCALL #'(LAMBDA ...) ...).
1227 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1228 a compile-time error. (lp#720382)
1229 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1231 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1232 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1233 optimization. (regression from 1.0.45.18/1.0.46.15)
1234 * bug fix: package locks did not protects against compile-time side-effects
1235 of DEFUN. (lp#675584)
1236 * bug fix: --dynamic-space-size argument is validated more carefully.
1238 * bug fix: memory fault from printing a malformed simple-condition.
1240 * bug fix: redefining classes so that slot-definition classes change now
1241 engages the obsolete instance protocol. (lp#766271)
1242 * bug fix: constant improper lists could break source coverage recording.
1244 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1245 could exhaust stack.
1247 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1248 * bug fix: fix mach port rights leaks in mach exception handling code on
1249 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1251 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1252 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1253 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1254 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1255 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1256 processed using EVAL -- now the appropriate toplevel form is reported instead.
1257 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1258 declarations. (lp#726331)
1259 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1260 that NIL/NULL is excluded from the type.
1261 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1263 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1264 and its compatriots.
1265 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1266 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1267 stack-allocated values out of their dynamic-extent. (lp#310175)
1268 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1269 x86-64 builds caused a type-error.
1270 * bug fix: calling COMPILE with something else than a lambda-expression as the
1271 second argument reports a more sensible error. (lp#718905)
1272 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1273 are detected. (lp#520607)
1274 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1276 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1277 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1278 methods. (regression from 1.0.45.18)
1279 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1280 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1281 * bug fix: several foreign functions accepting string also accepted NIL and
1282 consequently caused a memory fault at 0 now signal a type-error instead.
1284 * bug fix: under rare circumstances, constraint propagation could rewrite a
1285 variable reference to refer to a variable not in scope, causing an error
1286 during physical environment analysis when attempting to close over the
1287 variable. (lp#551227)
1288 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1290 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1291 * enhancement: largefile support on Solaris.
1292 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1293 arguments (lp#710017)
1294 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1295 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1297 * optimization: ERROR and CERROR are approximately 5 times faster.
1298 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1299 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1300 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1301 up instance creation in those cases.
1302 * optimization: arithmetic operations with multiple constant arguments in now
1303 have them reduced at compile-time. (lp#676414)
1304 * optimization: determining current character position on string-streams for
1305 pretty-printing was overly slow.
1306 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1307 lifetime analysis to overwrite closed-over variables (lp#681092).
1308 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1309 were not handled correctly (lp#713063).
1310 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1312 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1313 mistake. (lp#667297).
1314 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1315 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1316 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1317 unintern the wrong symbol with the same name. (lp#693796)
1318 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1319 making it possible to restore the initial table if it has been messed up.
1322 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1323 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1324 Refer to documentation for details.
1325 * enhancement: ASDF has been updated to version 2.010.
1326 * optimization: mutated closed-over variables that are only accessed by
1327 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1328 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1329 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1330 * optimization: UNWIND-PROTECT cleanup functions are now declared
1332 * bug fix: backtracing function with &REST arguments now shows the full
1333 argument list. (lp#310173)
1334 * bug fix: return types for functions with complex lambda-lists are now
1335 derived properly (lp#384892)
1336 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1337 long string arguments slowed the compiler down to a crawl.
1338 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1339 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1340 in the DEFMETHOD body.
1341 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1342 messages, being instead replaced with the corresponding function name.
1343 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1344 operators. (lp#309448)
1346 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1347 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1348 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1349 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1351 * enhancement: default dynamic-space size can be configured at build-time
1352 without touching source, using the --dynamic-space-size argument to make.sh.
1353 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1354 qualities, and mentions ALWAYS-BOUND declarations.
1355 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1357 * enhancement: ASDF has been updated to 2.009.
1358 * enhancement: the system detects known type-erros in calls better,
1359 signalling a full warning about violated proclaimed FTYPEs and violations
1360 of derived FTYPEs within the same file, including self-calls.
1361 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1362 * optimization: constant-folding exploits numeric and character types, in
1363 addition member types.
1364 * optimization: numeric, character and member types that are inhabited by
1365 exactly one value are tested with EQL.
1366 * optimization: more conditional branches are eliminated during IR1.
1367 Branches are simplified before performing if/if-conversion, and simple
1368 equivalent branches (that only read the same constant or variable) are
1370 * improvements to the Windows port:
1371 ** change: canonical unparsing form for pathname namestrings now uses / as
1372 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1373 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1374 on Windows. (thanks to Kalyanov Dmitry)
1375 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1377 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1378 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1379 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1380 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1382 * bug fix: interrupts arriving during CL:OPEN caused an error.
1383 * bug fix: overeager character buffering could cause input to block
1384 spuriously when reading from a pipe (lp#643686)
1385 * bug fix: more efficient timer expiry should avoid starvation on systems
1386 where number of SIGALRMs per second is restricted. (lp#375515)
1387 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1388 * bug fix: compile-times no longer scale linearly with the size of
1389 quoted lists in source-code. (lp#654289)
1390 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1391 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1392 so badly. (lp#654485)
1393 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1394 an error for eg. STRUCTURE. (lp#458015)
1395 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1396 (lp#613871, thanks to Roman Marynchak)
1397 * bug fix: more reliable &REST list type derivation. (lp#655203)
1398 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1399 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1400 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1401 also declared NOTINLINE. (lp#655581)
1402 * bug fix: the compiler could attempt to emit constant left shifts of
1403 greater value than n-word-bits. (lp#309063)
1404 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1405 type information for the function being set. (lp#659220)
1406 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1407 containing self-calls were recompiled with a new signature, and failed
1408 to warn when a self-call using the old signature was left in. (lp#655126)
1409 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1410 :DEFAULT when the default external had character size other than 8 bits.
1412 * bug fix: derived types of functions in the same file were implicitly
1413 trusted, leading to potential heap corruption when those function were
1414 defined incompatibly. (lp#657499)
1415 * bug fix: existing ASDF source registries are ignored when building
1416 contribs (lp#659105)
1417 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1418 (lp#655824, thanks to Roman Marynchak)
1419 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1420 package-lock violation was detected. (lp#660752)
1421 * bug fix: the system can store different docstrings for a single function
1422 under different names. (lp#661631, regression from 1.0.29.24)
1423 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1424 properly. (lp#384801)
1425 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1426 of specified length could confuse the type derivation in unsafe code.
1428 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1429 fork with multiple Lisp threads running is made on every platform,
1430 not just Darwin. (lp#451111)
1431 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1432 around when core was saved, which could cause undefined behaviour when the
1434 * bug fix: Allow UNTRACE of functions that are no longer defined
1435 (lp#667657, thanks to Attila Lendvai)
1436 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1437 compile-time warning (lp#664373, thanks to Stas Boukarev)
1439 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1440 * incompatible change: FD-STREAMS no longer participate in the serve-event
1441 event-loop by default. (lp#316072)
1442 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1443 affects streams from CL:OPEN.
1444 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1445 default, but this is liable to change: applications needing serve-event
1446 for socket streams should explicitly request it using :SERVE-EVENTS T
1448 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1450 * enhancement: CLOS effective method functions and defclass slot typechecking
1451 function now have debug names for use in backtraces and profiles.
1452 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1454 * enhancement: symbols are printed using fully qualified names in several
1455 error and warning messages which are often associated with package
1456 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1457 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1458 thanks to Andrew Golding)
1459 * bug fix: reading /proc files on Linux works. (lp#425199)
1460 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1462 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1463 breaking code that tried to write the value of a printer control variable.
1464 (lp#581564, thanks to Stas Boukarev)
1465 * bug fix: WRITE compiler macro did not handle output stream designators
1466 correctly. (lp#598374, thanks to Stas Boukarev)
1467 * bug fix: better availability of names of foreign functions in backtraces
1468 on Linux. (lp#626962, thanks to Stas Boukarev)
1469 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1470 lp#627581, thanks to Josh Elsasser and Jim Wise)
1471 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1472 thanks to Josh Elsasser)
1473 * bug fix: using aliases for builtin classes as defmethod specializers
1474 without adding DEFTYPEs for them works. (lp#618387)
1475 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1477 * bug fix: legally dynamic-extent lists and vectors used as
1478 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1479 * bug fix: inline-expansion creating references to dead lambda-variables
1480 (lp#454681, thanks to Alexey Dejneka)
1481 * bug fix: better error message for bogus numerical arguments to RANDOM.
1482 (lp#598986, thanks to Stas Boukarev)
1483 * bug fix: the compiler occasionally inlined references from incompatible
1484 environments occurs. (lp#308951)
1485 * bug fix: the compiler threw an error when trying to compile a local
1486 function (labels or flet) known to take a specialized complex argument.
1487 (not in launchpad, reported by sykopomp in #lispgames)
1488 * bug fix: package-locks failed to protect against compile-time effects of
1489 DEFUN when the symbol previously had a macro definition. (lp#576637)
1490 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1491 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1492 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1493 * bug fix: evaluation in debugger REPL works using the global context when
1494 in frames that do not have sufficient debug information.
1495 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1497 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1499 * bug fix: interrupt taking longer than the requested period caused SLEEP
1500 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1502 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1504 ** Cross-compilation host is now specified to make.sh using
1505 command-line argument --xc-host=<command> instead of a positional
1506 argument. (thanks to Daniel Herring)
1507 ** Install location can be specified to make.sh using command-line
1508 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1509 * optimization: The default implementation of
1510 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1511 * enhancement: Explicit memory barrier operations are now available for use
1512 by multithreaded code. See documentation for details.
1513 * enhancement: Experimental support for threading on Linux/PPC.
1514 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1515 * bug fix: EXPT signals an error if first argument is a zero and second
1516 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1517 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1518 (lp#576594, thanks to Roman Marynchak)
1519 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1520 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1522 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1523 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1524 cached, leading to many fewer expensive calls to
1525 COMPUTE-APPLICABLE-METHODS.
1526 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1527 CLASS argument, search for and call an appropriate optimized ctor function
1529 * bug fix: WRITE always returns the correct value.
1531 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1532 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1533 * bug fix: Name conflicts between symbols passed as arguments to a single
1534 call to IMPORT no longer add multiple symbols with the same name to the
1535 package (detectable via DO-SYMBOLS).
1536 * bug fix: support building without the dlshim on darwin x86 and x86-64
1538 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1540 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1541 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1543 * bug fix: linkage-table entries on PPC now no longer overflow their
1544 space allocation (potentially causing crashes if they are written out
1546 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1547 platforms, preventing the GC from seeing stale pointers on the control
1548 stack in subsequent GCs (which would, and does, break invariants).
1549 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1550 * bug fix: Literal characters with code points greater than about 32767
1551 now work on PPC UNICODE builds.
1552 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1553 high order bits are explicitly cleared out. In some contrived situations,
1554 this could lead to wrong results in mixed real/complex float arithmetic.
1555 * bug fix: Fix function/macro redefinition warnings when building with
1556 clisp. (lp#576787, thanks to Josh Elsasser)
1557 * new platform: experimental support for ppc/openbsd (thanks to Josh
1559 * bug fix: Floating-point traps now work on ppc/linux.
1561 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1562 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1563 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1564 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1565 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1566 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1567 SB-THREAD:GRAB-MUTEX.
1568 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1569 contain additional data structures and tools for concurrent programming;
1570 at the moment it contains a lock-free queue, and a lock-free mailbox
1572 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1573 GET-MUTEX but takes &key rather than &optional parameters. Also added
1574 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1576 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1577 SB-THREAD:WAIT-ON-SEMAPHORE.
1578 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1580 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1581 conditions to defer the deadline for forever.
1582 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1584 * enhancement: errors from NO-APPLICABLE-METHOD and
1585 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1586 generic function call.
1587 * enhancement: SB-BSD-SOCKET improvements
1588 ** sockets and socket streams now have a more informative printed
1589 representation based on the corresponding SOCKET-NAME and
1591 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1593 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1594 CL:CLOSE when appropriate, and no longer disassociates the stream
1595 from the socket if close failed. (lp#543951)
1596 * improvements to the instrumenting profiler
1597 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1598 ** optimization: counters no longer use locks for the overflow mode.
1599 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1600 incurred an off-by-one miscount.
1601 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1602 * enhancement: improved DEFMETHOD pretty-printing.
1603 * enhancement: perform range reduction when arguments are too large for
1604 x87's transcendentals (instead of returning 0). (lp#327192)
1605 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1606 some of CL-PPCRE's macros. (lp#570079)
1607 * enhancement: our machine code is slightly less hostile to valgrind on
1609 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1610 to Robert Swindells and Aleksej Saushev)
1611 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1612 * bug fix: a rare case of startup-time page table corruption.
1613 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1614 to timeouts could be left in an inconsistent state.
1615 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1616 * bug fix: misoptimization of multiplication by one in
1617 (SB-C::FLOAT-ACCURACY 0) policies.
1618 * bug fix: miscounts in SB-PROFILE.
1619 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1620 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1621 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1622 up itself" (March 2010) for further details.
1623 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1624 against length of the list if the element is found before the specified
1625 END is reached. (thanks to Alec Berryman, lp#554385)
1626 * bug fix: errors signalled during package graph modification no longer
1627 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1628 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1629 :SB-DOC feature. (lp#552564)
1630 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1631 * bug fix: more robust runtime executable path detection. (lp#375549)
1632 * bug fix: GCD always returns positive values. (lp#413680)
1633 * bug fix: Converting division to multiplication by reciprocal handles
1635 * bug fix: We were too eager in eliding range reduction tests on x87.
1636 The maximal magnitude is 2^63, not 2^64.
1637 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1639 * bug fix: Maybe restore buildability on Alpha.
1640 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1642 * bug fix: RANDOM-STATE can be printed readably again.
1643 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1644 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1645 types) could result in type mismatches during compilation.
1647 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1648 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1649 stack frame thrown from.
1650 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1651 compiler optimization qualities inside dynamic extent of its body.
1652 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1653 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1655 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1656 constraint propgation, allowing better compilation eg. when used to
1657 access structures with WITH-SLOTS. (lp#520366)
1658 * optimization: the compiler is now more aware of the type of the underlying
1659 storage vector for multidimensional simple arrays resulting in better code
1660 for accessing such arrays.
1661 * optimization: passing NIL as the environment argument to TYPEP no longer
1662 inhibits optimizing it. (lp#309788)
1663 * optimization: more efficient register usage when handling single-float
1664 arguments on x86-64. (thanks to Lutz Euler)
1665 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1666 pre-allocated temporary vectors. (lp#496249)
1667 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1668 in :INITIAL-CONTENTS. (lp#523612)
1669 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1670 functions. (lp#524707)
1671 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1672 WITH-SLOTS usages during compilation.
1673 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1674 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1675 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1676 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1677 instruction (tested on x86oid linux with ud2-breakpoints).
1678 * bug fix: slam.sh now works on win32.
1679 * bug fix: better differences of numeric types. (lp#309124)
1680 * bug fix: arrays declared intersection and union types can have their
1681 upgraded element type derived. (lp#316078)
1682 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1683 threads started during profiling. (lp#472499)
1684 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1686 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1687 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1688 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1689 values instead of signaling an error. (lp#309093)
1690 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1692 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1693 declarations (lp#497321)
1694 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1695 and failed to detect circular lists (lp#452008)
1696 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1698 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1699 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1700 due to it, so that handlers can run.
1701 * bug fix: reparsing undefined types if they have become defined since
1702 parsing. (lp#309128)
1703 * bug fix: missing &REST type in a proclamation for a function with both
1704 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1705 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1706 expanded calls (lp#542174)
1707 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1708 than just at toplevel form.
1710 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1711 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1712 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1713 but work on type specifiers.
1714 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1715 to name a type specifier.
1716 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1717 specifier is valid where "valid" basically means "would be accepted as
1718 second argument of TYPEP".
1719 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1720 returns the function's declared, or derived FTYPE.
1721 * new feature: SB-POSIX now supports accessing the d_ino member of
1722 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1723 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1724 provide for seeding a RANDOM-STATE object with user-provided data or
1725 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1726 attempt to initialize the returned state from the operating system's
1727 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1728 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1729 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1730 * bug fix: Fix grammar and style issues for the docstrings of
1731 printer-related variables and functions. (Thanks to mon_key; launchpad
1733 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1735 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1736 in a row even though a handler defered the deadline long into the
1738 * bug fix: A deadline handler was run without interrupts enabled for a
1739 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1740 in infinitely spinning, non-killable threads.
1741 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1742 before reaching the erring stack frame.
1743 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1744 real power. (launchpad bug lp#525949)
1745 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1746 GENCGC platforms. (launchpad bug lp#529014)
1747 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1748 (launchpad bug lp#525916)
1749 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1750 (Thanks to Robert Goldman)
1752 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1753 * optimization: ROUND with a single single-float or double-float argument
1754 is properly inlined when possible.
1755 * optimization: Slightly better code is generated for integer<->float
1756 conversions and for single-float<->double-float conversions on x86-64.
1757 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1758 code for 32-bit and 64-bit rotations on x86-64.
1759 * bug fix: The install script changes the ownership of directories as well
1760 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1761 launchpad bug lp#508485)
1762 * bug fix: TRUNCATE with a single single-float or double-float argument is
1763 properly inlined when possible. (launchpad bug lp#489388)
1764 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1765 no longer causes a compiler error on x86 and ppc.
1766 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1767 always relative to *READTABLE* rather than the passed argument.
1769 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1770 * minor incompatible change: threading support is now enabled by default
1772 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1774 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1775 are now caught and reported just like errors during macroexpansion.
1776 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1777 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1778 * enhancement: ASDF systems can now depends on SB-QUEUE.
1779 * fixes and improvements related to Unicode and external formats:
1780 ** bug fix: error handling and restart usage in the ucs-2 external format
1782 ** there is now an implementation of the ucs-4 external format.
1783 ** the utf-16 and utf-32 external formats are supported.
1784 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1785 in the environment. setenv() and unsetenv() are also provided. (reported by
1786 Fare Rideau; launchpad bug lp#460455)
1787 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1788 loading. This ensures sensible errors for .FASL files from other
1789 implementations on case-insensitive filesystems. (reported by Willem
1790 Broekema; launchpad bug lp#489417)
1791 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1792 Willem Broekema; launchpad bug lp#489698).
1793 * bug fix: some minor code rearrangements to reenable warning-free building
1794 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1795 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1797 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1800 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1801 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1802 * improvement: support O_LARGEFILE access to files larger than 2GB on
1803 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1804 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1805 definitions for methods specializing on the passed class itself.
1806 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1807 definitions for methods specializing on the passed class itself, or on
1809 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1810 about itself during the build (e.g. for M-? in Slime), if this flag is
1811 enabled in customize-target-features.lisp. This will increase the core
1812 size by about 5-6mb, though, so it's mostly interesting to SBCL
1814 * new feature: various GENCGC tuning parameters have been experimentally
1815 documented and exported from SB-EXT. See documentation for details.
1816 * fixes and improvements related to Unicode and external formats:
1817 ** the Unicode character database has been upgraded to the
1818 Unicode 5.2 standard, giving names and properties to a number of new
1819 characters, and providing a few extra characters with case
1821 ** improvement: restarts for providing replacement input/output on coding
1822 errors for fd-stream external formats.
1823 ** improvement: where :<encoding> is a keyword corresponding to an
1824 external format the system supports, it is now possible to specify
1825 (:<encoding> :replacement <character>) as an external format which will
1826 automatically substitute <character> on encoding or decoding errors for
1827 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1829 ** improvement: the file streams underlying the standard streams (such as
1830 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1831 which uses the replacement mechanism to handle encoding errors,
1832 preventing various infinite error chains and unrecoverable I/O
1834 ** minor incompatible change: the utf-8 external format now correctly
1835 refuses to encode Lisp characters in the surrogate range (char-codes
1836 between #xd800 and #xdfff).
1837 ** fix a typo preventing conversion of strings into octet vectors
1838 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1840 ** fix a bug in the octet multibyte handling of decoding errors and the
1841 USE-VALUE restart. (launchpad bug lp#314939)
1842 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1843 restart on fd-stream decoding errors.
1844 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1845 error is near the end of file.
1846 ** fix a double-error case in unibyte octet conversions, when the first
1847 use of USE-VALUE is ignored.
1848 ** fix bugs in handling of undefined code points in unibyte encodings.
1849 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1850 streams after an UNREAD-CHAR.
1851 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1852 object is allocated in a boxed region of dynamic space.
1853 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1854 fork with multiple Lisp threads running is made, instead of going
1855 ahead with unpredictable consequences. (reported by Leslie Polzer)
1856 * bug fix: uses of slot accessors on specialized method parameters within
1857 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1858 error while finalizing the class. This fix may cause classes with slot
1859 accessors to be finalized later than previously. (reported by Lars Rune
1860 Nøstdal; launchpad bug lp#473699)
1861 * bug fix: restore buildability on the MIPS platform. (regression from
1862 1.0.30.38, reported by Samium Gromoff)
1863 * bug fix: inspecting closures is less likely to fail with a type error.
1864 * bug fix: no timer starvation when setting the system clock back.
1865 (launchpad bug lp#460283)
1866 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1867 standard pprint dispatch table as specified by CLHS.
1868 * bug fix: give CLISP a hint about a type declaration to enable it to build
1869 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1871 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1872 (reported by Attila Lendvai; launchpad bug lp#310132)
1873 * bug fix: distinguish in type specifiers between arrays that might be
1874 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1875 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1876 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1877 * bug fix: setting the value of a symbol-macro within a method in the
1878 presence of type declarations works properly again. (reported by Iban
1879 Hatchondo; launchpad bug lp#485019)
1881 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1882 * optimization: faster FIND and POSITION on strings of unknown element type
1883 in high SPEED policies. (thanks to Karol Swietlicki)
1884 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1886 * improvement: better error signalling for bogus parameter specializer names
1887 in DEFMETHOD forms (reported by Pluijzer)
1888 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1890 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1892 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1893 removes previous default initargs (reported by Lars Rune Nøstdal and
1895 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1896 lambda-lists. (reported by Peter Seibel)
1897 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1898 correctly when starting from an executable core without saved runtime
1899 options (reported by Faré Rideau, thanks to Zach Beane)
1900 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1901 an optimization note instead. (reported by Martin Cracauer)
1902 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1903 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1904 new process group if it doesn't need to share stdin with the sbcl
1905 process. (thanks to Leslie Polzer)
1906 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1907 (reported by Stanislaw Halik)
1909 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1910 * improvement: stack allocation is should now be possible in all nested
1911 inlining cases: failure to stack allocate when equivalent code is manually
1912 open coded is now considered a bug.
1913 * improvements related to Unicode:
1914 ** the Unicode character database has been upgraded to the
1915 Unicode 5.1 standard, giving names and properties to a number of new
1916 characters, and providing a few extra characters with case
1918 ** the system now recognizes and produces names for Unicode Hangul
1919 syllable characters.
1920 ** the EBCDIC-US external-format is now supported for octet operations
1921 (as well as for stream operations).
1922 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1923 be used to output toplevel compile-time effects into a separate .CFASL
1925 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1926 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1928 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1930 * optimization: division of floating point numbers by constants uses
1931 multiplication by reciprocal when an exact reciprocal exists.
1932 * optimization: multiplication of single- and double-floats floats by
1933 constant two has been optimized.
1934 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1935 sufficient type information is available. (thanks to Leslie Polzer)
1936 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1937 known structure objects are as efficient as defstruct generated accessors.
1938 * optimization: unused vector creation can now be optimized away.
1939 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1940 * improvement: a STYLE-WARNING is signalled when a generic function
1941 clobbers an earlier FTYPE proclamation.
1942 * improvement: the compiler is able to track the effective type of
1943 generic function across method addition and removal even in the
1944 absence of an explicit DEFGENERIC.
1945 * improvement: DESCRIBE now reports on symbols naming undefined
1946 but assumed or declared function as well.
1947 * improvement: recompilation of systems using SB-GROVEL now works
1948 (thanks to Leslie Polzer)
1949 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1950 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1952 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1953 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1954 well as user defined declaration names.
1955 ** VARIABLE-INFORMATION is now aware of alien variables.
1956 * improvement: improved address space layout on OpenBSD (thanks to Josh
1958 * improvement: pretty-printing of various Lisp forms has been improved
1959 (thanks to Tobias Rittweiler)
1960 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1961 unused were deleted in safe code. (reported by John Fremlin)
1962 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1964 * bug fix: some out-of-line array predicates were missing (reported by
1966 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1968 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1969 (thanks to Larry D'Anna)
1970 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1971 as well. (reported by Josh Elsasser)
1972 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1973 leading to possible attempts to delete the same file twice. See docstring
1974 on DELETE-FILE for details. (reported by John Fremlin)
1975 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1976 designator argument, rather than its truename. (reported by Luis
1978 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1979 information about some array types. (thanks to Luis Oliveira)
1980 * bug fix: moderately complex combinations of inline expansions could
1981 be miscompiled if the result was declared to be dynamic extent.
1982 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1983 form (+ <variable> <integer>) were miscompiled under certain
1985 * bug fix: in some cases no compiler note about failure to stack allocate
1986 was emitted, even if the objects were in fact heap allocated.
1987 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1988 allocation could cause objects users might reasonably expect to
1989 be heap allocated to be stack allocated.
1990 * bug fix: DESCRIBE signalled an error for generic functions under
1991 certain circumstances. (thanks to Leslie Polzer)
1992 * bug fix: Fixed spelling of an error message.
1994 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1995 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1996 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1997 of SB-THREAD:THREAD-ERROR-THREAD.
1998 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1999 * new feature: docstrings for local and anonymous functions are no longer
2000 discarded. (thanks to Leslie Polzer)
2001 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2002 values in other threads.
2003 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2004 about object allocation.
2005 * optimization: division of a real float by a complex float is implemented
2006 with a specialised code sequence.
2007 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2008 keywords is an order of magnitude faster.
2009 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2010 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2011 methods, and similarly for non-standard metaclass classes as long as there
2012 are no methods additional on MAKE-INSTANCE.
2013 * optimization: more efficient type-checks for FIXNUMs when the value
2014 is known to be a signed word on x86 and x86-64.
2015 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2016 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2018 * optimization: compiler is smarter about delegating argument type checks to
2020 * optimization: several character functions are now compiled somewhat more
2021 efficiently. (reported by Lynn Quam)
2022 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2023 * improvement: less unsafe constant folding in floating point arithmetic,
2024 especially for mixed complex/real -float operations.
2025 * optimization: constant double and single floats are stored in native
2026 unboxed format on x86[-64].
2027 * optimization: smarter code for arithmetic operations with constant floats,
2028 complex floats, or integers on x86[-64].
2029 * optimization: smarter code for conjugate/multiplication of float complexes
2030 and abs/negate of floats on x86-64.
2031 * optimization: more efficient complex float and real float operations on
2033 * improvement: complex float division is slightly more stable.
2034 * improvement: DESCRIBE output has been reworked to be easier to read and
2035 contains more pertinent information.
2036 * improvement: failure to provide requested stack allocation compiler notes
2037 provided in all cases (requested stack allocation not happening without a
2038 note being issued is now considered a bug.)
2039 * bug fix: SB-POSIX exports the documented types and functions
2040 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2041 types. (reported by "abhi")
2042 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2043 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2044 (thanks to Paul Khuong)
2045 * bug fix: looping around HANDLER-CASE could silently consume stack space
2046 on each iteration. (reported by "foobar")
2047 * bug fix: better error signalling when calls to functions seeking elements
2048 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2049 (reported by Tobias Rittweiler)
2050 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2051 directory components now works as it used to. (various prolems reported by
2052 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2053 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2054 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2055 * bug fix: bogus undefined variable warnings from fopcompiled references to
2056 global variables. (thanks to Lars Rune Nøstdal)
2057 * bug fix: foreign function names should now appear in backtraces on
2058 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2059 * bug fix: SETF compiler macro documentation strings are not discarded
2061 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2062 (thanks to Alex Plotnick)
2063 * bug fix: SLEEP accepts large integer arguments, truncating them to
2064 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2065 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2066 * bug fix: compiler notes for expensive slot type checks could be emitted
2067 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2069 changes in sbcl-1.0.29 relative to 1.0.28:
2070 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2071 https://bugs.launchpad.net/sbcl
2072 Bugs can be reported directly there, or by sending email to
2073 sbcl-bugs@lists.sourceforge.net
2074 (no subscription required.)
2075 * minor incompatible change: under weak type checking policy integer
2076 types are weakened less aggressively.
2077 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2078 allowed to return, which causes SBCL to quit with exit status 0. Previously
2079 if the function returned with a small integer return value, that value
2080 was accidentally reused as the exit status.
2081 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2082 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2083 :HASH-FUNCTION argument. Refer to user manual for details.
2084 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2086 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2087 microseconds since the Unix epoch on all platforms.
2088 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2089 allows the compiler to safely elide boundedness checks for special
2091 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2092 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2093 efficiency measure for threaded platforms, but also valueable in
2095 * new feature: UNC pathnames are now understood by the system on Windows.
2096 * optimization: the compiler uses a specialized version of FILL when the
2097 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2099 * optimization: accesses to potentially non-simple arrays where element type
2100 is known are 50% faster.
2101 * optimization: compiler now generates faster array typechecking code.
2102 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2104 * optimization: multidimensional array accesses in the absence of type
2105 information regarding array rank are approximately 10% faster due to
2106 open coding of ARRAY-RANK.
2107 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2108 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2110 * optimization: result of call to VECTOR can now be stack allocated.
2111 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2112 as long as the resulting array is one-dimensional and has a known
2113 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2114 length of the list matches the known length of the vector does not
2115 allocate the list as an intermediate step. Ditto for VECTOR and simple
2117 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2118 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2119 known element type, and is known to be simple and one dimensional.
2120 * improvement: SBCL now emits a compiler note where stack allocation was
2121 requested but could not be provided (not in all cases, unfortunately)
2122 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2123 * improvement: pretty-printing loop has been implemented properly. (thanks
2124 to Tobias Rittweiler)
2125 * documentation: CLOS slot typechecing policy has been documented.
2126 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2127 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2128 pointer, leading to memory faults. (thanks to Bart Botta)
2129 * bug fix: better floating point exception handling on x86/OpenBSD.
2130 (thanks to Josh Elsasser)
2131 * bug fix: exit status from QUIT when called under --script was lost
2132 (reported by Hubert Kauker)
2133 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2134 same implementation of FILL to initialize the array, even if a more
2135 efficient one was available (reported by Stas Boukarev, thanks to
2137 * bug fix: potential miscompilation of array stack allocation on x86 and
2138 x86-64. (reported by Time Tossavainen)
2139 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2140 result in their subforms being treated as top level forms. (reported by
2142 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2143 than a machine register could leave garbage in the high bits of the
2144 result register (bug 316325).
2145 * bug fix: disable address space randomization Linux/x86-64 as well,
2146 not just x86-64. (reported by Ken Olum)
2147 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2148 generate incorrect code.
2149 * bug fix: #201; type inference for CONS and ARRAY types could derive
2150 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2151 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2152 could not be assigned to or bound with PROGV. (reported by Lorenz
2154 * bug fix: the value of CL:- in the inspector was the previous expression
2155 evaluated rather than the expression being evaluated.
2156 * bug fix: constants can no longer be locally declared special.
2157 * bug fix: signals delivered to threads started from foreign land (read:
2158 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2159 thread by blocking all signals and resignalling.
2160 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2161 from :INITFORM, if any.
2163 changes in sbcl-1.0.28 relative to 1.0.27:
2164 * a number of bugs in cross-compilation have been fixed, with the ultimate
2165 result that building under (at least) clisp should be much more reliable.
2166 * minor incompatible changes: echo-streams now propagate unread-char to the
2167 underlying input stream, and no longer permit unreading more than one
2169 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2170 frames, allowing for instance more reliable backtraces.
2171 * improvement: the debugger REPL can now reference lexical variables
2172 by name directly for code compiled with (DEBUG 3).
2173 * improvement: errors from malformed declarations now have better source
2174 paths associated with them. (thanks to Tobias Rittweiler)
2175 * optimization: faster local calls on x86/x86-64
2176 * bug fix: some error messages for out-of-bound array indexes confused the
2177 index and the bound. (thanks to Stas Boukarev)
2178 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2180 * bug fix: running regressions tests in shells without OSTYPE set now works.
2181 (reported by Harald Hanche-Olsen)
2182 * bug fix: more robust static space exhaustion signalling from
2183 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2184 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2185 docstring away instead of storing it under names such as (LAMBDA (X)).
2186 (reported by Leslie Polzer)
2187 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2188 (thanks to Ole Arndt for the patch)
2189 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2190 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2191 potentially-invalid effective methods in its cache.
2192 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2193 instances as well (thanks to Paul Khuong)
2194 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2195 SB-POSIX:WAITPID and their C equivalents.
2196 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2198 changes in sbcl-1.0.27 relative to 1.0.26:
2199 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2200 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2201 * improvement: the system either recovers from stack exhaustion or dies
2202 properly as opposed to leaving the user uncertain of whether the handler
2203 trampled on some random memory next to the stack or having to rely on
2204 --lose-on-corruption (which is still a good idea to use in production
2205 because stack exhaustion can happen in signal handlers which will likely
2207 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2208 1.0.25.37, reported by Harald Hanche-Olsen)
2209 * bug fix: work around signal delivery bug in darwin (regression from
2210 1.0.25.44, reported by Sidney Markowitz)
2211 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2213 changes in sbcl-1.0.26 relative to 1.0.25:
2214 * incompatible change: an interruption (be it a function passed to
2215 INTERRUPT-THREAD or a timer function) runs in an environment where
2216 interrupts can be enabled. The interruption can use
2217 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2218 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2219 potentially running out of stack. Keep in mind that in the absence
2220 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2221 acquiring a lock can enable interrupts.
2222 * incompatible change: GC-OFF and GC-ON are removed, as they were
2223 always unsafe. Use WITHOUT-GCING instead.
2224 * new feature: runtime option --disable-ldb
2225 * new feature: runtime option --lose-on-corruption to die at the
2226 slightest hint of possibly non-recoverable errors: running out of
2227 memory, stack, alien stack, binding stack, encountering a memory
2228 fault, etc. In the absence of --lose-on-corruption a warning is
2230 * enhancement: detect binding stack exhaustion
2231 * enhancement: detect alien stack exhaustion on x86/x86-64
2232 * improvement: generally more stable and reliable interrupt handling
2233 * improvement: there is a per thread interruption queue,
2234 interruptions are executed in order of arrival
2235 * improvement: a repeating timer reschedules itself when the it has
2236 finished, but expiration times are spaced equally. If an
2237 expiration time is in the past it will trigger after a short grace
2238 period that may give a chance to other things to run.
2239 * optimization: slightly faster gc on multithreaded builds
2240 * optimization: faster WITHOUT-GCING
2241 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2242 important locks so that the debugger/handler doesn't produce
2243 recursive errors or deadlock.
2244 * bug fix: real-time signals are not used anymore, so no more
2245 hanging when the system wide real-time signal queue gets full.
2246 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2248 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2249 * bug fix: fix random memory faults related to interrupts on alpha
2250 * bug fix: fix random memory faults related to interrupts on sparc
2251 * bug fix: fix deadlocks related to starting threads
2252 * bug fix: fix deadlines on locks on futex platforms
2253 * bug fix: restore errno in signal handlers
2254 * bug fix: fix deadlocks related to hash tables
2255 * bug fix: fix deadlocks in pcl
2257 changes in sbcl-1.0.25 relative to 1.0.24:
2258 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2259 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2260 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2261 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2262 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2263 better name and does not return values so stale on multiprocessor systems.
2264 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2266 * improvement: unithread builds keep track of MUTEX-VALUE.
2267 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2268 stream anymore making it thread safe to have a concurrent reader and
2269 a writer, for instance, in a pipe.
2270 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2271 arguments, making compiler-macros for SETF-functions able to inspect
2272 their constant arguments.
2273 * improvement: COMPILE-FILE reports times with millisecond accuracy
2274 (thanks to Luis Oliveira)
2275 * optimization: CHAR-CODE type derivation has been improved, making
2276 TYPEP elimination on subtypes of CHARACTER work better. (reported
2277 by Tobias Rittweiler, patch by Paul Khuong)
2278 * bug fix: setting alien structure fields of type struct by value now
2279 computes the right offset for the memory copy.
2280 * bug fix: compilation problem involving inlined calls to aliens with
2281 result type VOID. (reported by Ken Olum)
2282 * bug fix: #235a; sequential inline expasion in different policies no
2283 longer reuses the functional from the previous expansion site.
2284 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2285 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2286 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2287 cause an implied type redefinition. Regression from 1.0.21.29.
2288 * bug fix: sign-extension of small signed return values now works with C
2289 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2290 * improvements to the Windows port:
2291 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2292 Westfold, thanks to Rudi Schlatte)
2294 changes in sbcl-1.0.24 relative to 1.0.23:
2295 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2296 vector of a multidimensional SIMPLE-ARRAY.
2297 * new feature: the system now signals a continuable error if standard
2298 readtable modification is attempted. (thanks to Tobias Rittweiler)
2299 * new feature: DIRECTORY has been extended with a non-standard keyword
2300 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2301 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2302 has been robustified and documented better. (thanks to Robert Goldman)
2303 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2304 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2305 * tradeoff: constant FORMAT control strings are now compiled unless
2306 SPACE > SPEED (previously only when SPEED > SPACE.)
2307 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2309 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2311 * bug fix: lexical type declarations are now correctly reported by
2312 SB-CLTL2. (reported by Larry D'Anna)
2313 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2314 using UTF-8 as external format. (thanks to Luis Oliveira)
2315 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2316 are signalled correctly. (thanks to Stas Boukarev)
2317 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2318 designator. (thanks to Tobias Rittweiler)
2319 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2320 designator, and returns T instead of the function. (thanks to
2322 * bug fix: direct superclasses of STANDARD-CLASS and
2323 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2324 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2325 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2326 when no class with the named slot yet exists no longer causes a
2327 compile-time style-warning.
2328 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2329 in safe code. (reported by Didier Verna)
2330 * bug fix: #430; nested structure constructors can stack allocate.
2331 * bug fix: on some 64-bit platforms dynamic space size was truncated
2332 to #xffff0000 bytes. (reported by Benjamin Lambert)
2333 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2334 REPL unusable. (reported by Daniel Herring)
2335 * bug fix: return values of READ-SEQUENCE did not take :START into
2336 account on file streams, regressions since 1.0.12.22. (reported by
2337 Thomas Russ, patch by Paul Khuong)
2338 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2339 method specializer used to confuse permuation vector optimization.
2340 * bug fix: system inserted bogus implicit type declarations for local
2341 special variables in DEFMETHOD bodies.
2342 * bug fix: #354; duplicated frames in backtraces due to
2343 non-tail-call-optimized XEPs to functions with return type NIL
2345 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2346 initializes structure object slots according to DEFSTRUCT initforms,
2347 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2348 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2349 (reported by Bruno Haible and Stephen Wilson)
2350 * bug fix: #395; fill-pointer output streams used now support
2351 element-type BASE-CHAR as well.
2352 * bug fix: compiler error when attempting to derive return value of
2353 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2355 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2357 * bug fix: Mac OS X binaries should now be portable between Leopard
2360 changes in sbcl-1.0.23 relative to 1.0.22:
2361 * enhancement: when disassembling method functions, disassembly
2362 for the associated fast function is also produced.
2363 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2365 * optimization: printing with *PRINT-PRETTY* true is now more
2366 efficient as long as the object being printed doesn't require
2367 special handling by the pretty printer.
2368 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2369 now interact correctly with type declarations.
2370 * partial bug fix: PCL detects infinite recursion during wrapper
2371 validation. (thanks to Attila Lendvai)
2372 * bug fix: #426; nested function calls are inlined properly.
2373 Previously if FOO was an inline function, in calls of the form
2374 (FOO (FOO ...)) the outer call was not inlined.
2375 * bug fix: long long arguments passed in registers to alien
2376 functions on PowerPC Linux and NetBSD are now handled correctly
2377 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2379 changes in sbcl-1.0.22 relative to 1.0.21:
2380 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2381 for the shared object in the current directory, but passes the native
2382 namestring of the designated pathname to the operation system's shared
2383 object loading function as-it.
2384 * minor incompatible change: --disable-debugger toplevel option now takes
2385 effect before processing of initialization files and --eval or --load
2387 * new feature: new commandline argument: --script, which supports
2388 shebang lines. See documentation for details. (based on work by
2390 * new feature: SAVE-LISP-AND-DIE can save current values of
2391 --dynamic-space-size and --control-stack-size in the executable core,
2392 causing it to skip normal runtime option processing. See documentation
2393 for details. (thanks to Zach Beane)
2394 * enhancement: inoccous calls to EVAL or generic functions dispatching
2395 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2396 * enhancement: the system no longer resignals errors from --load and
2397 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2398 associated with the original error to be lost. (thanks to Ariel
2400 * enhancement: :DONT-SAVE keyword argument has been added to
2401 LOAD-SHARED-OBJECT for controlling interaction with
2402 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2403 the effects of an earlier LOAD-SHARED-OBJECT call.
2404 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2405 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2406 provided. (reported by Cedric St-Jean)
2407 * bug fix: circularity handling in the reader did not treat raw
2408 structure slots correctly. (reported by Cedric St-Jean)
2409 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2410 file descriptors when there were none.
2411 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2412 was broken. (reporteed by Willem Broekema)
2413 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2414 pathnames without a directory.
2415 * bug fix: COMPILE-FILE did not warn about undefined variable
2416 references at toplevel, and LOAD of the resulting fasl did
2417 not signal an error.
2418 * bug fix: functions with non-required arguments used to end up with
2419 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2420 * bug fix: redefining a function with non-required arguments didn't
2421 update the system's knowledge about its call signature properly.
2422 * bug fix: fixed #431; incompatible alien record type redefinitions
2423 are detected and handled. (reported by Neil Haven)
2424 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2425 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2427 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2428 after alien stack frames.
2429 * bug fix: strings passed to mk{s,d}temp lacked null termination
2431 changes in sbcl-1.0.21 relative to 1.0.20:
2432 * new feature: the compiler is able to track the effective type of a
2433 generic function across method addition and removal.
2434 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2435 appropriately typed structure slots without locking.
2436 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2437 information like those gathered by TIME using a programming-friendly
2439 * new feature: TIME reports time taken even if the form performs a
2440 non-local transfer of control.
2441 * enhancement: reduced conservativism on GENCGC platforms: on
2442 average 45% less pages pinned (measured from SBCL self build).
2443 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2444 mutate constant symbols or violate declaimed type of the symbol.
2445 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2446 sleeping on the semaphore in heavily contested semaphores.
2447 * bug fix: semaphores and condition variables were not interrupt
2449 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2450 owned by other threads anymore.
2451 * bug fix: FIND on lists called KEY outside the specified
2452 subsequence. (reported by budden)
2453 * bug fix: LOG doesn't use single-float intermediate results when
2454 given mixed integer and double-float arguments, leading to better
2455 precision. (reported by Bob Felts)
2456 * bug fix: LOG with base zero returned values of inconsistent type.
2458 changes in sbcl-1.0.20 relative to 1.0.19:
2459 * minor incompatible change: OPTIMIZE qualities
2460 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2461 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2462 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2463 * documentation: some slot access efficiency guidelines have been
2464 added to the user manual.
2465 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2466 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2467 as ASSOC and MEMEBER.
2468 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2469 to more efficient EQ-comparison versions more often.
2470 * optimization: enhanced derivation of DOLIST iteration variable type
2472 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2474 * optimization: runtime lookup of function definitions can be
2475 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2476 * optimization: compiler is able to derive the return type of
2477 (AREF (THE STRING X) Y) as being CHARACTER.
2478 * optimization: CLRHASH on empty hash-tables no longer does pointless
2479 work. (thanks to Alec Berryman)
2480 * optimization: REPLACE deftransforms don't punt when :START1 or
2482 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2483 no longer emits a code deletion note. (reported by Andrew
2485 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2486 functions with an odd number of &OPTIONAL arguments, a &REST
2487 argument, and one or more &KEY arguments at the call site.
2488 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2489 arguments appeared at call sites as well.
2490 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2491 READ-LINE &co can no longer read from them afterwards. (reported
2493 * bug fix: fixed #427: unused local aliens no longer cause compiler
2494 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2496 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2497 alien-stack leakage. (reported by Andy Hefner)
2498 * bug fix: PROGV signals an error when an attempt to violate declared
2499 type of a variable or bind a constant is made.
2500 * bug fix: SET signals an error when an attempt to violate declared
2501 type of a variable is made.
2502 * bug fix: restart computation during the execution of a restart
2503 test function no longer causes infinite recursion. (reported by
2505 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2506 signals an error. (thanks to Pierre Mai)
2507 * bug fix: EXPORT left symbol unexported in conflict situations.
2508 (thanks to Michael Weber)
2509 * bug fix: correctly handle name conflicts involving CL:NIL.
2510 (thanks to Michael Weber)
2511 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2512 conflicts arising from USEing package with conflicting symbols
2513 correctly. (thanks to Michael Weber)
2515 changes in sbcl-1.0.19 relative to 1.0.18:
2516 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2517 warnings that go otherwise unhandled will be muffled if they are
2518 of the type that's the value of this variable.
2519 * optimization: stack allocation is slightly more efficient on x86
2521 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2522 where a raw slot always is initialized using the initform whose
2523 type is not know sufficiently well a compile-time are now compiled
2524 correctly. (reported by John Morrison)
2525 * bug fix: compiler no longer makes erronous assumptions in the
2526 presence of non-foldable SATISFIES types.
2527 * bug fix: stack analysis missed cleanups of dynamic-extent
2528 arguments in non-let-converted calls to local functions.
2529 * improvements to the Windows port:
2530 ** adjusted address spaces for building on both Win32 and
2531 Win64. (thanks for John Connors)
2532 * fixed some bugs revealed by Paul Dietz' test suite:
2533 ** interval arithmetic during type derivation used inexact integer
2534 to single-float coercions.
2535 ** arithmetic operations involving large integers and single
2536 floats give the same results in compiled and interpreted code.
2537 ** deriving the result type of COERCE no longer signals an error
2538 if the derived type of the second argument is a MEMBER type
2539 containing invalid type specifiers.
2540 ** ADJOIN with constant NIL as second argument works correctly.
2541 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2543 changes in sbcl-1.0.18 relative to 1.0.17:
2544 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2545 profiles only the current thread.
2546 * minor incompatible change: changes to SYMBOL-VALUE of constants
2547 defined with DEFCONSTANT now signal an error.
2548 * enhancement: SB-SPROF now has support for wallclock profiling,
2549 and is also able to profile specific threads. REPORT output
2550 has also additional sorting options.
2551 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2553 * optimization: structure allocation has been improved
2554 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2555 ** out of line constructors are ~10% faster.
2556 ** inline constructors are ~15% faster.
2557 ** inline constructors are capable of dynamic extent allocation
2558 (generally on x86 and x86-64, in some cases on other platforms
2560 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2562 * optimization: file compiler is now able to coalesce non-circular
2563 lists, non-base strings, and bit-vectors. Additionally, constants
2564 are never referenced through SYMBOL-VALUE at runtime.
2565 * optimization: code defining methods on PRINT-OBJECT (and other
2566 generic functions in the COMMON-LISP package) now loads faster.
2567 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2569 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2570 fasl is now deleted. (reported by Attila Lendvai)
2571 * bug fix: READ-LINE always returned NIL for the last line in files.
2572 (reported by Yoshinori Tahara)
2573 * bug fix: more accurate disassembly annotations of foreign function
2574 calls. (thanks to Andy Hefner)
2575 * bug fix: trimming non-simple strings and non-string string
2576 designators when the there is nothing to trim works properly.
2577 (thanks to James Knight)
2578 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2579 (thanks to Travis Cross)
2580 * fixed some bugs revealed by Paul Dietz' test suite:
2581 ** NIL is a valid function name (regression at 1.0.13.38)
2582 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2583 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2584 fill pointers properly (regression at 1.0.12.23)
2585 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2586 displacement indices properly (regression at 1.0.12.23)
2588 changes in sbcl-1.0.17 relative to 1.0.16:
2589 * temporary regression: user code can no longer allocate closure
2590 variable storage on stack, due to bug 419 without explicitly
2591 requesting it. Please consult sbcl-devel for advice if you need to
2592 use this feature in the meanwhile.
2593 * new feature: runtime argument --control-stack-size can be used to
2594 adjust thread default control stack size.
2595 * enhancement: improved TIME output
2596 ** all times are reported using the measured accuracy (milliseconds
2597 for real and GC times, microseconds for everything else.)
2598 ** processor cycle counts on x86 and x86-64.
2599 ** interpreted forms are counted for both evaluator modes.
2600 ** number of lambdas converted by the compiler is reported.
2601 ** CPU percentage report (computed from real and total run time.)
2602 ** more comprehensive run time reporting, using a condenced format
2603 ** interperted form, lambda, and page fault counts are omitted
2605 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2607 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2608 * optimization: two argument forms of LAST are upto ~10% faster
2609 in normal SPEED policies.
2610 * optimization: NCONC no longer needs to heap cons its &REST list
2611 in normal SPEED policies.
2612 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2613 to Sidney Markowitz)
2614 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2615 regression since 1.0.9.1. (thanks to Eric Marsden)
2616 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2617 since 1.0.15.36. (thanks to Paul Khuong)
2618 * bug fix: LAST when always returned the whole list when given a bignum
2619 as the second argument.
2620 * bug fix: dynamic extent allocation of nested lists and vectors
2621 could leak to otherwise accessible parts.
2622 * bug fix: invalid optimization of heap-allocated alien variable
2624 * bug fix: fasl header checking is less vulnerable to different
2625 platform word lengths.
2626 * bug fix: more correct assembler syntax for GNU binutils
2627 2.18.50.0.4 support. (thanks to Marijn Schouten)
2628 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2630 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2631 declarations) successfully. (reported by Attila Lendvai)
2633 changes in sbcl-1.0.16 relative to 1.0.15:
2634 * minor incompatible change: revert the changes to sb-posix's error
2635 signaling added in 1.0.14.
2636 * minor incompatible change: change PROBE-FILE back to returning
2637 NIL whenever we can't get a truename, as was the case before 1.0.14.
2638 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2639 inherits from ERROR instead of just CONDITION.
2640 * new feature: SB-INTROSPECT can provide source locations for instances
2641 as well. (thanks to Tobias Rittweiler)
2642 * optimization: binding special variables now generates smaller code
2643 on threaded platforms.
2644 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2645 and cases where no :TEST is given but the compiler can infer that
2646 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2647 * optimization: better LOGNOT on fixnums.
2648 * optimization: modular arithmetic for a particular requested width
2649 is implemented using a tagged representation unless a better
2650 representation is available.
2651 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2652 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2653 for wellformedness and returns a specialized vector. (reported by
2654 Francois-Rene Rideau)
2655 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2656 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2657 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2658 unscheduling timer at the same time as another timer fires.
2659 * bug fix: don't reschedule timers for dead threads.
2660 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2661 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2662 bogus errors if select() was interrupted.
2663 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2665 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2666 * enhancement: cleaner backtraces for interactive interrupts, as
2667 well as other cases where the interesting frames used to be
2668 obscured by interrupt handling frames.
2669 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2670 now supported, and tracing a whole package using (TRACE "FOO") now
2671 traces SETF-functions as well.
2672 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2673 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2674 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2675 * unreadably printed representation of hash-tables now includes
2677 * bug fix: partially fixed #188: type propagation from assignments
2678 is now more efficient.
2679 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2680 'DOUBLE-FLOAT) are not flushable.
2681 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2682 full address of the object, and none of the tag bits.
2683 * bug fix: readably printing hash-tables now respects other printer
2684 control variables. (reported by Cedric St-Jean)
2685 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2686 keyword with MAKE-HASH-TABLE.
2687 * bug fix: export SB-POSIX:MKSTEMP.
2688 * bug fix: SORT was not interrupt safe.
2689 * bug fix: XREF accounts for the last node of each basic-block as
2691 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2692 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2693 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2694 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2695 create obsolete instances in the case of redefinition or
2696 obsoletion of a superclass. (thanks to Andy Hefner)
2697 * bug fix: Support for the Alpha architecture has been revived; it had
2698 suffered somewhat from lack of maintenance since sbcl-1.0.
2699 * improvements to the Windows port:
2700 ** The system detects the codepage to use at startup, instead of
2701 using the value from the saved core. (thanks to Kei Suzuki)
2703 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2704 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2705 (see documentation for details.)
2706 * revived support for OpenBSD (contributed by Josh Elsasser)
2707 * partially fixed bug #108: ROOM no longer suffers from occasional
2708 (AVER (SAP= CURRENT END)) failures.
2709 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2710 bodies no longer cause a WARNING to be signalled. (reported by
2712 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2713 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2714 the bug in TRUNCATE.) (reported by Michael Weber)
2715 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2716 no samples. (reported by Andy Hefner)
2717 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2718 no longer appear as (NIL ...) frames in backtraces.
2719 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2720 is now actually exported from SB-EXT as documented. (reported by
2722 * bug fix: sb-aclrepl now correctly understands how to inspect
2723 single-floats on 64-bit platforms where single-floats are not boxed.
2724 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2725 yet been finalized. (reported by Levente Meszaros)
2726 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2727 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2728 SBCL-specific optimize qualities.
2730 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2731 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2732 an executable in the search path, and does so in the child
2733 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2734 been removed; it can be found in the CVS history, for somebody who
2735 needs that search behavior (see the manual).
2736 * minor incompatible change: compiler policy re. weakening type
2737 checks has changed: now type checks are weakened only if SAFETY < 2
2739 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2740 unparsing of directory pathnames as files. Analogously,
2741 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2742 filename to parse into a directory pathname.
2743 * enhancement: implicit generic function creation now signals a
2744 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2745 users can bind handlers for and muffle around calls to LOAD.
2746 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2747 to be used (using the default stream external format), and allows
2748 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2749 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2750 strings and vectors whose element-type or simplicity is not fully
2751 known at compile-time.
2752 * optimization: STRING-TRIM and related functions no longer allocate
2753 a new string when no trimming needs to be performed. These functions
2754 are also faster than before when the input string has been declared
2756 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2757 * optimization: READ-LINE is significantly faster for files containing
2759 * optimization: non-open coded uses of character comparison operators
2760 (e.g. char=) no longer cons when called with more than one parameter
2761 on platforms supporting dynamic-extent allocation.
2762 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2763 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2764 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2766 * bug fix: some sequence functions elided bounds checking when
2768 * bug fix: too liberal weakening of union-type checks when SPEED >
2770 * bug fix: more bogus fixnum declarations in ROOM implementation
2773 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2774 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2775 :SYNCHRONIZED argument, which makes the hash-table safe for
2776 concurrent accesses (but not iteration.) See also:
2777 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2778 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2779 * optimization: CONCATENATE on strings is an order of magnitude faster
2780 in code compiled with (> SPEED SPACE).
2781 * optimization: SUBSEQ is ~50% faster on lists.
2782 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2783 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2784 END is smaller then START.
2785 * bug fix: SB-PROFILE will no longer report extra consing for nested
2786 calls to profiled functions.
2787 * bug fix: ROOM implementation had bogus fixnum declarations which
2788 could cause type-errors when calling ROOM on large images.
2789 * bug fix: if file compilation is aborted, the partial fasl is now
2790 deleted, and COMPILE-FILE returns NIL as the primary value.
2791 * bug fix: number of thread safety issues relating to SBCL's internal
2792 hash-table usage have been fixed.
2793 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2794 be returned from its body when the values were being returned
2795 using unknown-values return convection and the W-P-O was wrapped
2796 inside an UNWIND-PROTECT.
2797 * bug fix: sb-posix should now compile again under Windows, enabling
2798 slime to work again.
2800 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2801 * incompatible change: hash-table accessor functions are no longer
2802 automatically protected by locks. Concurrent accesses on the same hash-table
2803 from multiple threads can give inconsistent results or even corrupt the
2804 hash-table completely. Multi-threaded applications should do their own
2805 locking at the correct granularity. In the current implementation it is
2806 still safe to have multiple readers access the same table, but it's not
2807 guaranteed that this property will be maintained in future releases.
2808 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2809 and will signal an error at runtime.
2810 * enhancement: SB-THREAD package now exports a semaphore interface.
2811 * enhancement: CONS can now stack-allocate on x86 and
2812 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2814 * enhancement: nested lists can now be stack allocated on
2815 platforms providing stack allocation support.
2816 * enhancement: dynamic-extent support has been extended to support
2817 cases where there are multiple possible sources for the stack
2819 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2820 if the mutex is uncontested on Linux.
2821 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2822 as specified by the CLHS. (thanks to Tobias Rittweiler)
2823 * bug fix: NaN comparison now works on x86-64.
2824 * bug fix: CLOSE :ABORT T on a stream with pending output now
2826 * bug fix: instances of non-standard metaclasses using standard
2827 instance structure protocol sometimes missed the slot type checks
2829 * bug fix: known functions can be inlined in high-debug code.
2831 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2832 * minor incompatible change: the MSI installer on Windows no longer
2833 associates .lisp and .fasl files with the installed SBCL.
2834 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2835 on Windows. (thanks to Luis Oliviera)
2836 * new feature: SB-CLTL2 contrib module now implements
2837 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2838 * optimization: scavenging weak pointers is now more efficient,
2839 requiring O(1) instead of O(N) per weak pointer to identify
2840 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2841 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2842 method bodies using constant slot-names when the first argument is
2843 a specializer parameter for the method.
2844 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2845 names, when the class of the instance is a direct instance
2846 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2847 as slow as the constant slot-name case.)
2848 * optimization: member type construction is now O(N) instead
2850 * optimization: UNION and NUNION are now O(N+M) for large
2851 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2853 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2854 now more readable in environments like Slime which display it.
2855 (thanks to Tobias C. Rittweiler)
2856 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2857 was able to infer the correct argument type for the object on which
2858 the CAS operation was being performed.
2859 * bug fix: copy propagation interfered with parallel assignment
2860 semantics in local calls. (reported by Paul Khuong)
2861 * bug fix: the signed modular fixnum shift compiled to wrong code on
2862 x86 and x86-64. (spotted by a slight modification to some of
2865 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2866 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2867 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2868 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2870 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2871 and generic function now print the object identity for anonymous
2872 instances. (thanks to Attila Lendvai)
2873 * enhancement: as an extension to MOP, SBCL now supports SETF of
2874 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2875 (thanks to Attila Lendvai)
2876 * enhancement: sb-cover has an alternate annotation mode which puts
2877 the form annotations at the car of the form, instead of annotating
2878 it completely. The benefit of this mode is that it shows better
2879 which forms were instrumented by the compiler.
2880 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2881 by printer control variables. (reported by Dan Corkill)
2882 * bug fix: system leaked memory when delayed output was performed by
2883 the OS in smaller chunks then expected. (thanks to David Smith)
2884 * bug fix: system leaked memory when file streams were not closed
2886 * bug fix: large objects written to slow streams that were modified
2887 after the write could end up with the modified state written to
2888 the underlying file descriptor.
2889 * bug fix: multiple threads operating in parallel on the same stream
2890 could cause buffer-overflows.
2891 * bug fix: source location information is stored correctly
2892 (broken since 1.0.6). This bug would generally show up as the
2893 Slime debugger highlighting the wrong form when the sldb-show-source
2895 * bug fix: Branch forms are again annotated as branches in the sb-cover
2897 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2898 on x86-64. (reported by Gregory Vanuxem)
2899 * bug fix: EQUALP could return wrong results for structures with raw
2900 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2901 word). (reported by Vjacheslav Fyodorov)
2902 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2905 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2906 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2907 atomic compare-and-swap operations on threaded platforms.
2908 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2909 allows assigning a global minimum value to optimization qualities
2910 (overriding proclamations and declarations).
2911 * enhancement: closed over variables can be stack-allocated on x86
2913 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2915 * optimization: slot definition lookup is now O(1). This speeds up
2916 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2917 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2918 * optimization: ASSOC and MEMBER can now be open-coded for all
2919 combinations of keyword arguments when second argument is constant
2920 and SPEED >= SPACE. In other cases a specialized version is
2922 * bug fix: using obsoleted structure instances with TYPEP and
2923 generic functions now signals a sensible error.
2924 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2925 (reported by Kristoffer Kvello)
2926 * bug fix: backtrace construction is now more careful when making
2927 lisp-objects from pointers on the stack, to avoid creating bogus
2928 objects that can be seen by the GC.
2929 * bug fix: defaulting of values in contexts expecting more than 7
2930 variables now works on x86-64. (reported by Christopher Laux)
2931 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2933 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2934 as the property-list of a symbol.
2935 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2936 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2937 situations requested, are once again file-compileable. (reported
2940 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2941 * MOP improvement: support for user-defined subclasses of
2942 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2943 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2944 the expansion of DEFMETHOD, is responsible for generating a form
2945 which creates a list of specializers when evaluated. Additional
2946 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2947 debugging and introspective support.
2948 * minor incompatible change: the (unsupported) spinlock interface
2949 has changed: free spinlock now has the value NIL, and a held spinlock
2950 has the owning thread as its value.
2951 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2952 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2954 * enhancement: name of a socket-stream is now "a socket" instead of
2955 "a constant string".
2956 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2957 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2958 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2959 for generic functions. (Thanks to Tobias C. Rittweiler)
2960 * optimization: bignum printing speed has been improved by 20-40%
2961 (depending on the bignum size.)
2962 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2964 * bug fix: the cache used by the CLOS to store precomputed effective
2965 methods, slot offsets, and constant return values is now thread and
2967 * bug fix: generic function dispatch function updating is now thread
2968 and interrupt safe (in the sense that the known issues have been
2970 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2971 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2972 * bug fix: asdf systems with dependencies to the SB-POSIX or
2973 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2974 * bug fix: interrupt safety of applicable method computation has been
2977 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2978 * new contrib: sb-cover, an experimental code coverage tool, is included
2979 as a contrib module.
2980 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2981 significantly faster.
2982 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2983 produce more efficient code on x86-64 if the compiler can determine
2984 that (+ INDEX <constant>) does not require a bounds check and FOO
2985 has an element type at least 8 bits wide.
2986 * enhancement: a new, experimental synchronous timeout facility is
2987 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2988 * enhancement: when a symbol name conflict error arises, the
2989 conflicting symbols are always printed with a package prefix.
2990 (thanks to Kevin Reid)
2991 * enhancement: stepping is now once again supported on the SPARC and
2992 MIPS platforms. (It is also now more likely to work on CheneyGC
2994 * enhancement: sb-sprof can now also track and report accurate call
2996 * bug fixes: the treatment of non-standard subclasses of
2997 SB-MOP:SPECIALIZER is more correct.
2998 * incompatible change: PURIFY no longer copies the data from the
2999 dynamic space into the static and read-only spaces on platforms
3000 that use the generational garbage collector
3001 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3003 * bug fix: GC race condition occasionally resulting in crashes with
3004 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3006 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3008 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3009 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3010 * bug fix: an asynchronous interrupt could previously leave the
3011 system running with GC inhibited.
3012 * bug fix: a DECLARE form evaluated at top-level now causes an error
3013 rather than silently (or verbosely) returning NIL.
3014 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3015 result in a error being signalled due to source form lookup errors.
3016 (reported by Peter Graves)
3018 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3019 * incompatible change: removed writer methods for host-ent-name,
3020 host-ent-addresses -- changing the values did not update the DNS
3022 * minor incompatible change: changed experimental JOIN-THREAD interface
3023 * documentation: the manual now lists reader and writer methods
3024 in class slot documentation sections. (thanks to Richard M Kreuter)
3025 * documentation: unwinding from asyncronous events has been
3026 documented as unsafe.
3027 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3028 in multithreaded application code.
3029 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3030 platforms. (thanks to James Anderson for the optimization hint)
3031 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3033 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3034 variants no longer cons.
3035 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3036 their NOT- variants no longer cons.
3037 * optimization: EQUAL hash tables no longer use SXHASH for objects
3038 of all data types, but instead use an EQL hash for types for which
3039 EQUAL is the same as EQL.
3040 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3041 are significantly faster.
3042 * optimization: new STRING-OUTPUT-STREAM implementation is much
3043 faster for large outputs and conses 30% less on average.
3044 * enhancement: XREF information is now collected for references made
3045 to global variables using SYMBOL-VALUE and a constant argument.
3046 * enhancement: SIGINT now causes a specific condition
3047 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3048 * bug fix: FILE-POSITION used to signal an error in some cases where
3049 ANSI requires it to return NIL.
3050 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3051 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3052 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3054 * bug fix: bad type declaration in the CLOS implementation has
3055 been fixed. (reported by James Anderson)
3056 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3057 (thanks to Lutz Euler)
3058 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3059 required by the CLHS. (reported by Samium Gromoff)
3060 * bug fix: dead unbound variable references now signal an error.
3061 (reported by Marco Monteiro)
3062 * bug fix: / with an unused value was being deleted in safe code.
3063 (thanks to Marco Monteiro and Kevin Reid)
3064 * bug fix: number of characters that can be written onto a single
3065 line in a file is unlimited.
3066 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3067 been fixed by inhibiting interrupts for when GC is disabled.
3068 * bug fix: some interrupt safety issues with GETHASH, (SETF
3069 GETHASH), CLRHASH and REMHASH have been fixed.
3070 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3071 specifier no longer causes infinite recursion.
3072 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3073 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3074 * bug fix: an &environment argument with the correct variable information
3075 is passed to macros that are expanded during byte compilation.
3076 (reported by Samium Gromoff)
3077 * bug fix: a logic error was causing the hash function for bignums to
3078 have excessive amounts of collisions. (reported by Faré Rideau)
3079 * bug fix: modifying the contents of an array could change the return
3080 value of SXHASH on that array, which is only allowed for strings
3081 and bit vectors. (bug introduced in 0.9.16)
3082 * improvement: the x86-64/darwin port now passes all tests (except
3083 for the debugger tests) but should still be considered
3084 experimental until this is fixed.
3085 * improvement: a style-warning is signaled for CASE (etc) clauses with
3086 duplicate keys. (thanks to Kevin Reid)
3087 * improvement: macos/x86 and macos/x86-64 now use mach exception
3088 handlers for dealing with illegal instructions (for trapping and
3089 error handling) and memory protection violations (for GC).
3091 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3092 * new platform: experimental support for x86-64/darwin (MacOS).
3093 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3094 and getnameinfo sockets functions are used instead of gethostbyaddr
3095 and gethostbyname, on platforms where the newer functions are available.
3096 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3098 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3099 don't print the startup banner, but behave as if --noinform was passed
3100 as a command line argument. (thanks to Kevin Reid)
3101 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3102 * optimization: code using alien values with undeclared types is much faster.
3103 * optimization: the compiler is now able to open code SEARCH in more cases.
3104 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3105 * bug fix: using standardized COMMON-LISP special variables as loop
3106 variables no longer signals bogus package lock violations. (reported
3108 * bug fix: declaring local loop variables to be of a range-limited type
3109 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3110 (reported by Andras Simon)
3111 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3112 bugs remain on x86-64.)
3113 * bug fix: the #= and ## reader macros now interact reasonably with
3114 funcallable instances.
3115 * bug fix: type-checks for function arguments were compiled using the
3116 compiler policy settings of the wrong lexical environment (in 1.0.2
3118 * bug fix: SHADOW accepts characters as string designators, as required
3119 by the spec (thanks to Eric Marsden)
3120 * bug fix: fixed GC safety issues when foreign functions are called with
3121 non-base strings as arguments
3122 * bug fix: more consistent error output for fatal-compiler-warnings, like
3124 * bug fix: functions with proper names were showing up as NIL in
3125 backtraces (reported by Edi Weitz, regression in 1.0.2)
3127 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3128 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3129 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3130 produce more efficient code on the x86 if the compiler can determine
3131 that (+ INDEX <constant>) does not require a bounds check and FOO
3132 has an element type at least 8 bits wide.
3133 * bug fix: references to undefined variables are handled the same way
3134 in toplevel forms as in the normal compiler
3135 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3137 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3138 (thanks to Jon Buller)
3139 * improvement: faster compilation times for complex functions
3140 * improvement: added readlink support to SB-POSIX (thanks to Richard
3143 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3144 * improvement: experimental support for mach exception handling on
3145 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3147 * improvement: support for GBK external format.
3148 (thanks to Chun Tian (binghe))
3149 * improvement: the debugger now displays variables that have been closed
3150 over, in code compiled with (DEBUG 2) or higher
3151 * improvement: support for executable cores on NetBSD (thanks to
3153 * new feature: added a RESTART-FRAME debugger command
3154 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3155 be used to provide an implementation for FILE-POSITION on Gray streams
3156 (thanks to Eric Marsden)
3157 * new feature: add syslog, openlog and closelog support to SB-POSIX
3158 (thanks to Richard Kreuter)
3159 * optimization: the function call overhead in code compiled with
3160 a high DEBUG optimization setting is significantly
3161 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3162 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3163 (thanks to Tony Martinez)
3164 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3165 evaluated once (reported by Kevin Reid)
3166 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3167 works again (thanks to Kilian Sprotte)
3168 * bug fix: an error is signaled for tagbodies with duplicate tags
3169 (thanks to Stephen Wilson)
3170 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3171 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3172 stack frames from alien callbacks.
3173 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3174 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3175 65k pages (thanks to David Woodhouse)
3176 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3178 changes in sbcl-1.0.1 relative to sbcl-1.0:
3179 * new platform: FreeBSD/x86-64, including support for threading.
3180 * new feature: the compiler stores cross-referencing information
3181 about function calls (who-calls), macroexpansion (who-macroexpands)
3182 and special variables (who-binds, who-sets, who-references) for code
3183 compiled with (< SPACE 3). This information is available through the
3184 sb-introspect contrib.
3185 * new feature: users may subclass SEQUENCE, and have instances of
3186 these classes interoperate with standard Common Lisp functions if
3187 a number of methods are defined. (This feature is experimental
3188 and the interface subject to change based on feedback from SBCL
3189 users and the general community)
3190 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3191 x86/x86-64, rather than the previous fixed depth of 8
3192 * improvement: another pthread back-end of mutex "pthread-futex".
3193 * bug fix: non-ascii command-line arguments are processed correctly
3194 (thanks to Yaroslav Kavenchuk)
3195 * bug fix: non-required arguments were not passed correctly when a method
3196 defined using DEFMETHOD was called from a mop-generated method using
3197 CALL-NEXT-METHOD (reported by Pascal Costanza)
3198 * bug fix: recursion is now permitted in accessors through
3199 SLOT-UNBOUND. (reported by Pascal Costanza)
3200 * bug fix: an error was signaled at startup if the HOME environment
3201 variable was defined, but had an empty value (reported by Peter Van Eynde)
3202 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3203 signal a PROGRAM-ERROR, not a BUG.
3204 * bug fix: SB-POSIX:READDIR works when built with large file support.
3205 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3207 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3208 for better automatic indentation support. (thanks to Matt Pillsbury)
3209 * optimization: loading generic functions no longer takes O(n^2) time,
3210 proportional to the amount of methods in the generic function
3211 (reported by Todd Sabin and Jeremy Brown)
3212 * optimization: the FIND and POSITION family of sequence functions
3213 are significantly faster on arrays whose element types have been
3215 * improvements to the Windows port:
3216 ** Intermittent heap corruption problems have been fixed. (thanks
3217 to Alastair Bridgewater)
3218 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3220 ** Lisp is able to unwind foreign exception frames from alien
3221 callbacks. (thanks to Alastair Bridgewater)
3223 changes in sbcl-1.0 relative to sbcl-0.9.18:
3224 * improvement: experimental support for threading on FreeBSD/x86.
3225 (thanks to NIIMI Satoshi)
3226 * improvement: runtime option --dynamic-space-size can be used
3227 to set the size of the dynamic space reserved on startup.
3228 * improvement: floating point modes in effect are now saved in
3229 core, and restored on startup.
3230 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3231 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3232 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3233 threads are not running after *SAVE-HOOKS* have run.
3234 * improvement: writes to CLOS instance slots are type-checked in code
3235 compiled with (SAFETY 3)
3236 * improvement: floating-point exception handling on FreeBSD (thanks to
3238 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3239 (thanks to Zach Beane)
3240 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3242 * improvement: added support for the Shift-JIS external format.
3243 (contributed by NIIMI Satoshi)
3244 * improvement: callbacks are supported on Linux/PPC. (thanks to
3246 * bug fix: compiler bug triggered by a (non-standard) VALUES
3247 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3248 * bug fix: file compiler no longer confuses validated and already
3249 dumped structurres. (reported by Kaersten Poeck)
3250 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3251 fill-pointer signals a type-error as required. (thanks to
3253 * bug fix: disassemly of funcallable instances works.
3254 * bug fix: single stepping on PPC.
3255 * bug fix: fix thread-safety problems in the type system (generally
3256 manifesting as nonsensical errors like "STRING is a bad type specifier
3257 for sequences" or "The value 1 is not of type FIXNUM")
3258 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3259 (reported by Josip Gracin)
3260 * bug fix: an error is signaled for attempts to displace arrays with
3261 incompatible element types (thanks to Mario Mommer)
3262 * bug fix: more correct handling of wide characters in debug info
3263 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3264 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3265 and don't cause extra consing
3266 * optimization: MAP and MAP-INTO are significantly faster on vectors
3267 whose elements types have been declared.
3268 * Improvements to SB-SPROF:
3269 ** Support for allocation profiling
3270 ** Reduced profiling overhead, especially for long profiling runs
3271 * Improvements to the Windows port:
3272 ** floating point exceptions are now reported correctly.
3273 ** stack exhaustion detection works partially.
3274 ** more accurate GET-INTERNAL-REAL-TIME.
3275 ** better RUN-PROGRAM behaviour in case of errors in the child
3277 ** PROBE-FILE now simplifies pathnames correctly.
3278 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3279 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3280 1st 1970 (although time timezone data will be unreliable).
3281 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3283 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3284 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3285 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3287 * bug fix: two potential GC deadlocks affecting threaded builds.
3288 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3289 returns T (reported by Anton Kazennikov)
3290 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3291 with non-variable places
3292 * bug fix: remove a race condition in the setting of
3293 funcallable-instance functions, this should make threaded CLOS
3294 code more stable against memory faults.
3295 * bug fix: corruption of specials when unbinding is interrupted by an
3296 asynchronous unwind (reported by Hannu Koivisto)
3297 * improvement: the debugger will now also display local variables that
3298 are only used once, for code compiled with a DEBUG optimization quality
3301 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3302 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3303 * incompatible change: External-format support for FFI calls. The
3304 SB-ALIEN:C-STRING no longer implies an ASCII
3305 external-format. Instead the string is subject to external-format
3306 conversion. Additionally return values of type SB-ALIEN:C-STRING
3307 are by default of type (SIMPLE-ARRAY CHARACTER), not
3308 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3309 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3310 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3311 * incompatible change: SB-EXT package no longer contains the
3312 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3313 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3315 * incompatible change: the single-stepper is no longer available
3316 on Alpha, Mips and Sparc platforms.
3317 * minor incompatible change: the direct superclasses of
3318 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3319 not (STANDARD-OBJECT FUNCTION). This makes the
3320 class-precedence-lists of GENERIC-FUNCTION and
3321 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3323 * minor incompatible change: the default stream external format on
3324 non-unicode SBCL is no longer detected from the locale, but is always
3326 * new feature: Add a version of evaluator that uses an interpreter instead
3327 of the compiler. EVAL still uses the compiler by default, to switch it
3328 to use the interpreter, set the value of the variable
3329 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3330 * minor incompatible change: the single-stepper REPL has been merged
3331 with the normal debugger (see the "Stepping" heading of the debugger help
3332 for more details). The debugger command STEP will no longer switch
3333 to the single-stepper REPL.
3334 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3335 for a type now works.
3336 * bug fix: loading of default sysinit file works. (thanks to Leonid
3338 * bug fix: better detection of circularities in the file-compiler.
3339 (reported by Marco Monteiro)
3340 * bug fix: the CL pathname functions now work with files that have
3341 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3342 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3343 systems with Unix98 pty semantics.
3344 * bug fix: ASDF-INSTALL will now work with bsd tar.
3345 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3347 * bug fix: timers expiring in dead threads no longer cause a
3348 type-error (reported by Paul "Nonny Mouse").
3349 * bug fix: thanks to more lightweight single-stepper instrumentation,
3350 code compiled with (DEBUG 3) will compile and execute significantly faster,
3351 and will have more accurate type-inferencing than before
3352 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3353 whose bindings are modified
3354 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3355 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3356 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3357 CL:SOFTWARE-VERSION with proper version
3359 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3360 * feature: implemented the READER-METHOD-CLASS and
3361 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3362 as specified by AMOP.
3363 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3365 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3366 (thanks to Lutz Euler)
3367 * optimization: hashing of general arrays and vectors has been
3368 improved. (reported by Any Fingerhut)
3369 * enhancement: SB-INTROSPECT is now able to find definitions of
3370 profiled functions. (thanks to Troels Henriksen)
3371 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3372 as well, allowing compiler-macros for SETF-functions to expand.
3373 * enhancement: step-instrumentation no longer wraps known
3374 single-value functions with multiple-value context, allowing
3375 better type inference.
3376 * fixed bug #337: use of MAKE-METHOD in method combination now works
3377 even in the presence of user-defined method classes. (reported by
3378 Bruno Haible and Pascal Costanza)
3379 * fixed bug #339(c): if there are applicable methods not part of any
3380 long-form method-combination group, call INVALID-METHOD-ERROR.
3381 (reported by Bruno Haible)
3382 * fixed bug #361: the :FUNCTION initarg in the protocol for
3383 initialization of methods can now be used to override
3384 internally-produced optimized functions. (reported by Bruno
3386 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3387 system-provided lambda expression no longer cause warnings about
3388 unbound #:|pv-table| symbols.
3389 * bug fix: improved the handling of type declarations and the
3390 detection of violations for keyword arguments with non-constant
3392 * bug fix: potentially erronous calls to PATHNAME and
3393 MERGE-PATHNAMES were being flushed in some cases.
3394 (reported by Richard Kreuter)
3395 * bug fix: compiled calls to TYPEP were mishandling obsolete
3396 instances. (reported by James Bielman and Attila Lendvai)
3397 * bug fix: format strings with ~> without matching ~< no longer
3398 trigger an AVER, but signal an understandable error instead.
3399 (reported by Antonio Martinez)
3400 * bug fix: specifying an output-file without a pathname-type for
3401 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3402 of input-file instead of "fasl". (reported by Robert Dodier)
3403 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3404 (reported by James Y Knight).
3405 * bug fix: compiler-macros-function did not consider the environment
3406 argument for shadowing by local functions.
3407 * bug fix: compiler-macros expansion was inhibited by local INLINE
3409 * bug fix: inline expansions of known functions were subject to
3410 step-instrumentation in high debug policies, leading to problems
3411 with type-inference.
3412 * bug fix: compiler failed to differentiate between different CONS
3413 types in some cases.
3414 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3415 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3416 * bug fix: #368: incorrect use of expressed vs. upgraded array
3418 * bug fix: #306a: more precise unions of array types.
3419 * thread-safety improvements:
3420 ** CONDITION-WAIT could return early on Linux, if the thread was
3421 interrupted and subsequently continued with SIGCONT.
3422 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3424 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3425 * added support for the ucs-2 external format. (contributed by Ivan
3427 * minor incompatible change: pretty printing of objects of type
3428 (cons symbol) is, in the default pprint-dispatch-table, now
3429 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3431 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3432 called later in a class's lifetime, possibly as late as when the
3433 first instance of the class is created. Previously,
3434 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3435 class became finalizeable.
3436 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3437 for multibyte external-format streams. (thanks to "vbzoli")
3438 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3439 with :ALLOCATION :CLASS inherited from superclasses of the
3441 * fixed bug: anonymous classes can now be created using the :NAME
3442 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3443 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3444 * fixed bug: core-files saved with :EXECUTABLE T can again be
3445 executed when SBCL_HOME isn't set. (reported by James Knight)
3446 * fixed bug: toplevel LOCALLY forms with declarations could
3447 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3448 * fixed bug: printing from several different threads using different
3449 values of *print-case* could cause invalid output, due to
3450 some internal special variables of the printer not being bound
3451 thread-locally (reported by Max Mikhanosha)
3452 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3453 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3454 (reported by Pascal Costanza)
3455 * fixed bug: FINALIZE-INHERITANCE is called from
3456 REINITIALIZE-INSTANCE on classes when the class has previously
3457 been finalized, as required by AMOP.
3458 * minor code generation optimizations:
3459 ** better register allocation in CLOS dispatching functions
3460 ** overflow detection when coercing signed bytes to fixnums on x86-64
3461 ** is now implemented with one IMUL instruction instead of three shifts
3462 ** more efficient bit-vector access on x86 and x86-64
3463 ** more efficient access to raw structure slots on x86 and x86-64
3464 * fixed some bugs revealed by Paul Dietz' test suite:
3465 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3466 return its argument.
3468 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3469 * feature: thread support on Solaris/x86, and experimental thread support
3471 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3473 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3474 default method for SLOT-UNBOUND.
3475 * minor incompatible change: prevent the user from specializing the
3476 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3477 somewhat counter to the intent of the protocol, I (CSR) think, and
3478 additionally it just doesn't work in SBCL as currently
3479 implemented, thanks to optimizations (that are always valid for
3480 the other three SLOT-VALUEish functions, but not for the setter).
3481 * minor incompatible change: the :SB-LDB feature is now enabled by
3482 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3483 the low-level debugger.
3484 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3485 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3486 down to an SB-SYS:FD-STREAM, allowing direct communication in
3487 more cases. Temporary files and pipes are still used as a fallback
3489 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3490 on the non-reentrant C functions localtime(3) and gmtime(3).
3491 * bug fix: global optimization policy was not visible in LOCALLY and
3493 * bug fix: class objects can be used as specializers in methods.
3494 (reported by Pascal Costanza)
3495 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3496 with a type error. (reported by blitz_ on #lisp)
3497 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3498 failed with a type error. (reported by Pascal Bourguignon)
3499 * bug fix: merging pathnames against defaults with :DIRECTORY
3500 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3501 (reported by James Y Knight)
3502 * bug fix: saving large (>2GB) cores on x86-64 now works
3503 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3504 constant index and a (simple-array (signed-byte 32)) array
3505 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3506 error (patch by Robert J. Macomber)
3507 * feature: TIME now displays the amount of run-time spent in GC
3508 * bug fix: The debugger now does a better job of respecting
3509 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3510 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3511 workaround for bug 403.)
3512 * bug fix: floating point exception handling now works on FreeBSD
3513 (thanks to NIIMI Satoshi)
3514 * fixed some bugs revealed by Paul Dietz' test suite:
3515 ** MISC.641: LET-conversion were not supposed to work in late
3517 * improvements to the Win32/x86 port:
3518 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3519 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3521 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3522 * new feature: source path information is generated for macro-expansion
3523 errors for use in IDE's like Slime (thanks to Helmut Eller)
3524 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3525 * bug fix: compiler does not loop forever on an invalid type in
3527 * improvement: compilation of most CLOS applications is significantly
3529 * optimization: added a limited bytecode compiler for simple toplevel
3530 forms, speeding up compilation and FASL loading
3531 * bug fix: the statistical profiler now properly distinguishes anonymous
3534 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3535 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3536 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3537 into subclasses of the finalized class. Now user calls to
3538 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3539 system return before any subclasses are finalized.
3540 * minor incompatible change: The reader no longer ignores errors
3541 regarding non-existent packages in #+ and #- feature tests.
3542 * new feature: command line options --no-sysinit, --no-userinit to
3543 inhibit loading the corresponding init files
3544 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3545 for sending data through UDP sockets (thanks to François-René Rideau)
3546 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3547 error is signalled instead (thanks to François-René Rideau)
3548 * minor incompatible change: Error signalling behaviour of lexical
3549 operations violating package locks has changed slightly. Refer to
3550 documentation on package locks for details.
3551 * enhancement: EVAL can process IF-expressions without resorting to the
3553 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3554 constant-folded properly due to missing out-of-line functions.
3555 (reported by Mika Pihlajamäki)
3556 * bug fix: LISTEN sometimes returned T even in cases where no data was
3557 immediately available from the stream
3558 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3559 were reversed. (reported by Levente Mészáros)
3560 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3561 when given a vector displaced to an adjustable array. (reported
3563 * bug fix: derivation of float boundaries from numbers outside the
3564 appropriate float range (reported by John Wiseman)
3565 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3567 * bug fix: precomputing cache entries for generic functions with
3568 some subclasses of specializers as yet invalid does not attempt to
3569 fill a cache line with a negative offset. (reported by Levente
3571 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3572 allow condition class objects as arguments to DOCUMENTATION and
3573 (SETF DOCUMENTATION); only find and set documentation for
3574 structure names for the STRUCTURE doc-type. (suggested by Gary
3576 * improvements to the Win32/x86 port:
3577 ** (user-homedir-pathname) and default initialization file
3578 locations now know about the user's "Documents and Settings"
3579 directory (thanks to Yaroslav Kavenchuk)
3580 ** run-program is implemented (thanks to Mike Thomas)
3581 ** sockets support (thanks to Timothy Ritchey)
3582 ** better backtrace support (thanks to Alastair Bridgewater)
3583 ** sb-grovel supported
3584 ** asdf-install and sb-posix work somewhat
3585 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3586 * improvements to the Solaris/x86 port:
3587 ** works on Solaris 11/Solaris Express
3588 ** floating-point exception handling support
3589 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3590 * fixed some bugs revealed by Paul Dietz' test suite:
3591 ** REMOVE-METHOD returns its generic function argument even when
3592 the method is not one of the generic functions' methods.
3593 ** objects declared as MEMBER types can be admissible arguments to
3594 structure accessors.
3595 ** printing characters should simply be printed by the FORMAT ~:C
3597 ** compiler failure when compiling functions with hairy constant
3598 defaults for optional parameters.
3599 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3600 function, which is already optimized.
3602 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3603 * new platform: experimental support for SBCL x86/Darwin, including
3604 MacOS X 10.4.5 on Intel.
3605 * new feature: Unicode character names are now known to the system
3606 (through CHAR-NAME and NAME-CHAR).
3607 * new feature: the filesystem location of SBCL's core file is
3608 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3609 * minor incompatible change: the contrib modules SB-POSIX and
3610 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3611 this change is to make it easier to distribute
3612 location-independent binaries.
3613 * bug fix: as implied by AMOP, standardized classes no longer have
3614 slots named by external symbols of public packages. (reported by
3616 * optimization: calling functions via constant symbols -- as in
3617 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3618 via the function object as in (FUNCALL #'FOO).
3619 * optimization: on x86 and x86-64, the calling convention for the
3620 case of dealing with an unknown number of values has been altered
3621 to be friendlier to the prediction heuristics implemented,
3622 particularly with reference to CALL and RET pairing. (thanks to
3623 Alastair Bridgewater)
3624 * optimization: on x86, the code for access to thread-local symbol
3625 values and binding/unbinding of thread-local symbols is smaller.
3626 (thanks to Alastair Bridgewater)
3627 * enhancement: CONSTANTP is now able to determine constantness of
3628 more complex forms, including calls to constant-foldable standardized
3629 functions and some special forms beyond QUOTE.
3630 * fixed bug: occasional GC crashes on Solaris/x86
3631 * optimization: x86-64 supports stack allocation of results of simple
3632 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3633 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3634 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3635 (thanks to James Knight)
3636 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3637 by the standard (thanks to Stephen Compall)
3639 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3640 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3641 be used for bundling the runtime and the core file into one
3642 executable binary. This feature is not currently supported on all SBCL
3643 platforms. (thanks to James Bielman and NIIMI Satoshi)
3644 * new feature: a generational or ephemeral garbage collector is now
3645 the default on the PowerPC platform (both Linux and Darwin). The
3646 old Cheney (stop and copy) collector is a build-time option.
3647 (thanks to Cyrus Harmon, after Raymond Toy)
3648 * minor incompatible change: the method by which SBCL finds its
3649 contributed modules has changed; it no longer relies on symbolic
3650 links from an $SBCL_HOME/systems directory, but searches directly
3651 in the subdirectories of $SBCL_HOME.
3652 * enhancement: the dynamic heap size on the Linux/PPC platform is
3653 markedly larger, even using the older Cheney garbage collector.
3654 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3655 certain complicated string types. (reported by Gary King)
3656 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3657 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3658 * fixed bug: DOCUMENTATION on structures no longer signals an
3659 error if no structure type of the right name exists. (reported by
3661 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3662 applicable non-standard primary or :AROUND method on
3663 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3664 no longer cause unbound variable errors. (reported by Kevin Reid)
3665 * fixed bug: metacircle resolution in cases where methods have slots
3666 added before the slots from STANDARD-METHOD. (reported by Jean
3668 * fixed bug: the Power PC assembly code for calling into lisp
3669 sometimes computed its return address wrongly (depending on the
3670 15th bit of the address, fixed at link time). This used to
3671 manifest itself in a segmentation violation while building PCL.
3672 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3673 many others over the years)
3674 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3675 the stack pointer (treated as a signed integer) is negative.
3676 (thanks to Peter van Eynde)
3678 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3679 * new platform: experimental support for the Windows operating
3680 system has been added. (thanks to Alastair Bridgewater)
3681 * fixed several bugs in and robustified the PPC FFI (including
3682 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3683 * bug fix: allow non-simple string symbol names (reported by Paul
3685 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3687 * bug fix: saving a core corrupted callbacks on x86/x86-64
3688 * bug fix: closed a loophole in metacircularity detection and
3689 grounding in the PCL implementation of CLOS.
3690 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3691 (reported by tomppa on #lisp)
3692 * bug fix: clear the direction flag on Lisp -> C transitions, as
3693 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3694 (reported by Andrej Grozin and Hendrik Maryns)
3695 * optimization: major improvements to GC efficiency on GENCGC platforms
3696 * optimization: faster implementation of EQUAL
3697 * optimization: emit more efficient opcodes for some common
3698 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3699 * optimization: several other minor code-generation improvements on x86-64
3700 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3702 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3703 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3704 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3705 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3706 by ANSI as a generic function, and for consistency (SETF
3707 GENERIC-FUNCTION-NAME) is treated likewise.
3708 * fixed bug #233.b: make constraint propagation notice when a variable
3709 value is changed after it is referenced but before it is used
3710 * fixed bug #296: no more arbitrary behaviour from filenames with
3711 odd characters as --load arguments. (reported by Adam Warner)
3712 * fixed bug #390: :CHARACTER-SET pathname components now work as
3713 expected. (reported by Tim Daly Jr)
3714 * fixed bug #391: complicated :TYPE intersections in slot
3715 definitions no longer cause an error in PCL internals.
3716 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3717 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3718 returning the number of octets which would be written to the
3719 file-stream. (thanks to Robert J. Macomber)
3720 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3721 arguments to the internal stream functions. (thanks to David
3723 * bug fix: stack exhaustion is now handled on the x86/SunOS
3724 platform. (thanks to Daisuke Homma)
3725 * bug fix: more accurate ROOM results on GENCGC platforms
3726 * optimization: improved type inference for arithmetic-for
3727 index variables in LOOP
3728 * optimization: faster floating-point SQRT on x86-64
3729 * fixed some bugs revealed by Paul Dietz' test suite:
3730 ** DOCUMENTATION returns NIL instead of "" for method combinations
3731 that don't have a docstring
3733 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3734 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3735 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3736 therefore are not customizeable by user code (as seems to be at
3737 least permitted and maybe required by AMOP). As a consolation,
3738 however, the SBCL implementation of these functions now calls
3739 REINITIALIZE-INSTANCE as specified by AMOP.
3740 * bug fix: slot-definition documentation is propagated as per ANSI
3741 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3742 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3743 argument, as do eslotd initialization methods. (from Pascal
3744 Costanza's "Closer" project)
3745 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3746 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3748 * bug fix: it is now possible to have more than one subclass of
3749 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3750 (reported by Bruno Haible, Pascal Costanza and others)
3751 * bug fix: the dependent update protocol now works for generic
3752 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3753 and Pascal Costanza)
3754 * bug fix: condition-class instances corresponding to
3755 DEFINE-CONDITION forms are now created eagerly. (reported by
3756 Kalle Olavi Niemitalo on comp.lang.lisp)
3757 * bug fix: floating point printing is more accurate in some
3758 circumstances. (thanks to Simon Alexander)
3759 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3760 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3761 * bug fix: callbacks on OS X now preserve stack-alignment.
3762 (thanks to Cyrus Harmon)
3763 * enhancement: the x86-64 disassembler is much better at
3764 disassembling SSE instructions. (thanks to Lutz Euler)
3765 * enhancement: CHECK-TYPE on a variable now allows type-inference
3766 (thanks to Vincent Arkesteijn)
3767 * optimization: improved performance of EUC-JP external format.
3768 (thanks to NIIMI Satoshi)
3769 * optimization: performance improvements to IO on file streams of
3770 :ELEMENT-TYPE CHARACTER
3771 * optimization: much faster memory allocation on x86-64
3772 * optimization: faster garbage collections (latency and throughput)
3774 * optimization: faster bignum subtraction and division on x86 and x86-64
3775 (thanks to Lutz Euler)
3776 * optimization: more accurate type-inference for loops that use a
3777 floating point index variable or a negative step.
3779 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3780 * bug fix: add a workaround to SBCL looping infinitely at startup on
3781 Linux kernels with apparently buggy implementations of personality().
3782 (thanks to Svein Ove Aas)
3783 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3784 (thanks to David Lichteblau)
3785 * bug fix: local bindings shadow global symbol macros for
3786 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3787 * optimization: non-open coded uses of numeric comparison operators
3788 (e.g. >) no longer cons when called with more than one parameter
3789 on platforms supporting dynamic-extent allocation.
3790 * enhancement: saving cores with foreign code loaded is now supported
3791 on MIPS/Linux in addition to the previously supported platforms.
3792 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3793 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3794 * bug fix: division by zero in sb-sprof when no samples were collected
3795 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3796 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3797 (thanks to Alexander Kjeldaas)
3798 * new feature: ignoring the return values of destructive functions
3799 like NREVERSE signals a compile-time style-warning.
3800 (thanks to Kevin Reid)
3801 * new feature: the alignment of alien structure fields can be
3802 explicitly specified. (thanks to Cyrus Harmon)
3803 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3804 and dump core on SIGQUIT
3806 ** incompatible change: threads do not inherit values of specials
3807 from their parents (see manual)
3808 ** bug fix: threads stacks belonging to dead threads are freed by the
3809 next exiting thread, no need to gc to collect thread stacks anymore
3810 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3811 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3812 ** bug fix: dynamic variable and thread start related gc lossage
3813 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3815 * fixed some bugs revealed by Paul Dietz' test suite:
3816 ** SUBTYPEP is slightly more accurate on heinously complicated
3817 CONS types where some of the members have uncertain (in the
3818 NIL, NIL sense) type relationships to each other.
3820 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3821 no longer purified unless :PURIFY T is explicitly specified.
3822 ** Non-purified cores are significantly smaller than before
3824 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3825 * new feature: timers based on Zach Beane's excellent timer package
3826 * added support for the following external formats: koi8-u,
3827 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3828 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3829 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3830 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3831 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3832 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3833 * incompatible change: a threaded SBCL will no longer revert to
3834 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3835 * bug fix: interrupts are disabled until startup is complete; no
3836 more sigsegvs when receiving a signal to soon
3837 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3839 * bug fix: add a workaround for the memory randomization features in
3840 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3841 workaround will only be in effect on systems with the proc filesystem
3843 * bug fix: printing objects of type HASH-TABLE signals a
3844 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3846 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3847 have been running for over 50 days. (reported by Gilbert Baumann)
3848 * bug fix: the logic for getting names of functions gets less
3849 confused when confronded with alternate-metaclass
3850 funcallable-instances. (reported by Cyrus Harmon)
3851 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3852 consistent, even on internal alternate-metaclass objects.
3853 * bug fix: flush closure information collected by physical
3854 environment analysis prepass before the main pass. (bug reported
3856 * bug fix: compiler pack phase does not modify a hashtable, which is
3857 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3858 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3859 may be expanded. (reported by Alexander <malishev> on c.l.l)
3860 * bug fix: no more style-warnings when compiling code using LAST
3861 under high-SPEED low-SPACE settings. (reported by David Wallin
3863 * fixed some incompatibilities between SBCL's MOP and the MOP
3865 ** the METAOBJECT class is now implemented;
3866 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3867 STANDARD-OBJECT, as required;
3868 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3869 now compatible (as required by VALIDATE-SUPERCLASS); there
3870 remains a consistency requirement over the presence or absence
3871 of the FUNCTION class in the superclass list of finalized
3872 classes; see the manual for more details;
3873 ** the :AROUND method for COMPUTE-SLOTS on
3874 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3875 requested slot ordering.
3877 ** bug fix: parent thread now can be gc'ed even with a live
3879 ** bug fix: binding a special with PROGV to no value is not
3880 the same as that symbol not having been bound (thanks to
3882 ** bug fix: binding specials is thread safe (thanks to
3884 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3885 and SB-SPROF do not die with 'no handler for signal XX in
3886 interrupt_handle_now(..)' anymore
3887 ** bug fix: WITH-TIMEOUT works with multiple running threads
3888 * fixed some bugs revealed by Paul Dietz' test suite:
3889 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3890 the :method-class keyword argument.
3892 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3893 * new port: the Solaris operating system on x86 processors is now
3894 mostly supported, though some rough edges in the environment
3895 remain. (thanks to Daisuke Homma)
3896 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3897 space for its heap. (thanks to Thiemo Seufer)
3898 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3899 closures. (thanks to Thiemo Seufer)
3900 * minor incompatible change: eof selects abort in the debugger.
3901 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3902 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3904 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3905 deprecated, and will go away in a future revision of SBCL.
3906 * minor incompatible change: GC-ON and GC-OFF are no longer
3907 implemented with a counter, it does not matter how many times gc
3908 is switched on or off
3909 * bug fix: discriminating functions for generic function classes
3910 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3911 make invalid assumptions about method precedence order. (reported
3913 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3914 platforms. (thanks to Thiemo Seufer)
3915 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3916 * bug fix: correct pathname printing with printer escaping is on.
3917 (thanks to Kevin Reid)
3918 * bug fix: complex VOP definitions in "user-space" no longer trigger
3919 package locks. (reported by Zach Beane)
3920 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3921 for funcallable-instance functions, and is no different from
3923 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3924 characters in the current readtable. (reported by Nicholas Neuss)
3925 * bug fix: SUBTYPEP on various CONS types returns more a more
3926 accurate acknowledgment of its certainty.
3927 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3928 lists in some cases. This partially fixes bug 384.
3929 * flush all standard streams before prompting in the REPL and the
3931 * bug fix: signal handling and triggering gc do not conflict
3932 directly anymore, in particular a high frequency sb-sprof does
3933 not prevent gc from running
3934 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3935 approximation for timezone and DST information between the
3936 universal time epoch and the smallest negative 32-bit time_t.
3937 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3938 year 1899 so long as the encoded time is non-negative.
3939 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3940 the correct answer for non-constant rotate amounts when performing
3941 an inline 32-bit rotation.
3943 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3944 there is only one thread in the session
3945 ** bug fix: memory leak for streams created in one thread and
3946 written to in another
3947 ** bug fix: lockup when compiled with gcc4
3948 ** bug fix: race that allows the gc to be triggered when gc is
3950 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3951 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3953 ** bug fix: finished threads are gc'ed properly
3954 * fixed some bugs revealed by Paul Dietz' test suite:
3955 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3956 has arguments with a different set of applicable methods from
3957 the orignal arguments.
3958 ** The type error thrown by MAP now has a correct expected-type
3960 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3961 name a compiled function.
3962 ** Three MISC tests where a large bignum was improperly coerced to
3963 a float that couldn't represent that bignum during type
3964 derivation were fixed.
3965 ** SUBTYPEP can now handle types involving the negation of a
3966 list-form FUNCTION type.
3967 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3968 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3969 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3971 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3972 * New feature: Experimental support for bivalent streams: streams
3973 opened with :element-type :default now allow character and binary
3974 (unsigned-byte 8) I/O
3975 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3976 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3978 * bug fix: no more highly sporadic "couldn't check whether ~S is
3979 readable" when reading a stream and an interrupt hits in the middle
3980 of a select system call
3981 * compiler better recognizes complex arrays (reported by Eduardo
3983 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3984 for variables on SBCL built with linkage-tables. (reported by Luis
3986 * various error reporting improvements.
3987 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3988 (Thanks to Thiemo Seufer)
3989 * bug fix: nested reader invokations work correctly
3990 * bug fix: it is possible to have simultaneous references to foreign
3991 code and foreign data with the same name.
3993 ** added x86-64 support
3994 ** incompatible change: the threading api now works with thread
3995 objects instead of thread ids
3996 ** bug fix: threads are protected from signals and interruption when
3997 starting up or going down
3998 ** bug fix: a race where an exiting thread could lose its stack to gc
3999 ** bug fix: don't halt on infinite error in threads if possible
4000 ** fixed numerous gc deadlocks introduced in the pthread merge
4001 ** bug fix: fixed thread safety issues in read and print
4002 ** bug fix: debugger doesn't hang on session lock if interrupted at
4003 an inappropriate moment
4004 ** bug fix: run-program is now thread safe(r)
4005 ** bug fix: inner with-recursive-lock no longer releases the mutex
4006 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4007 * fixed some bugs revealed by Paul Dietz' test suite:
4008 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4009 EXPECTED-TYPE slots filled.
4010 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4012 ** MAKE-CONDITION accepts classes as type-designators.
4013 ** COMPILE may never return NIL.
4014 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4015 range before calling Unix time functions
4017 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4018 * numerous signal handling fixes to increase stability
4019 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4020 * minor incompatible change: we now correctly canonize default
4021 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4022 as per the MOP, rather than the historical (INITARG INITFUNCTION
4023 INITFORM). (reported by Bruno Haible)
4024 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4025 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4026 for more information.
4027 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4028 pathname is a directory pathname.
4029 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4030 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4032 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4033 :METACLASS argument in addition to a class name. (reported by
4034 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4035 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4036 (reported by Bruno Haible; patch from Gerd Moellmann)
4037 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4039 * bug fix: more cleanups to the floating point exception handling on
4040 x86-64 (thanks to James Knight)
4041 * bug fix: the compiler does not try to constant fold calls of
4042 COERCE and BIT-* functions when they return freshly constructed
4043 objects. (reported by Nikodemus Siivola and Paul Dietz)
4044 * optimization: improved the MIPS versions of generic (in the
4045 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4046 * optimization: direct conversion of (unsigned-byte 32) to floats on
4047 the PowerPC platform.
4048 * optimization: structure instances with raw slots now use less
4049 memory, and probably show better memory locality. (thanks to
4051 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4052 are treated as requests for stack allocation on the x86-64,
4053 Alpha-32, PPC and SPARC platforms.
4054 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4055 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4056 (thanks to Tony Martinez)
4058 ** gcing a dead thread can no longer lead to lockups
4059 ** threads block signals until they are set up properly
4060 ** errno is no longer shared by threads
4061 ** interrupt-thread restores the eflags register on x86
4062 ** fixed some lockups due to gc/thread interaction
4063 * fixed some bugs revealed by Paul Dietz' test suite:
4064 ** invalid dotted lists no longer raise a read error when
4065 *READ-SUPPRESS* is T
4066 ** signal an error if a symbol that names a declaration is used
4067 as the name of a type, or vice versa
4068 ** allow using the (declare (typespec var*)) abbreviation for
4069 (declare (type typespec var*)) with all type specifiers
4070 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4071 ** always return NIL from PPRINT-POP when OBJECT is NIL
4072 ** don't signal errors when pretty-printing malformed LABELS,
4073 FLET or MACROLET forms
4074 ** declarations in a DOLIST body are also in scope for the
4076 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4078 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4081 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4082 * fixed cross-compiler leakages that prevented building a 32-bit
4083 target with a 64-bit host compiler.
4084 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4085 opened with :IF-EXISTS :OVERWRITE.
4086 * fixed bug 281: error for an invalid qualifier in a short-form method
4087 combination method is not signalled until the faulty method is called.
4088 * bug fix: iteration variable type inferrer failed to deal with open
4089 intervals. (reported by Alan Shields)
4090 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4091 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4092 or more runtime options were provided to the sbcl binary.
4093 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4094 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4095 * optimization: there's now a fast-path for fixnum arguments in the
4096 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4097 * optimization: the code generated on x86-64 is more compact thanks
4098 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4099 * bug fix: floating-point exception handling now partly works on
4100 x86-64. (Thanks to James Knight)
4101 * improvement to the MIPS backend from Thiemo Seufer: C-style
4102 64-bit long long arguments and return values to alien functions
4104 * fixed some bugs revealed by Paul Dietz' test suite:
4105 ** the type-error signalled from WARN has a filled-in DATUM slot.
4106 ** the type-error required when a stream is not associated with
4107 a file has the stream as its datum.
4108 ** type-errors on single-floats on x86-64 no longer have
4109 :INVALID-OBJECT as the datum
4110 ** the type-errors signalled for invalid function names now have
4111 a correct expected type
4112 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4113 for structures defined with a :TYPE. Documentation strings for
4114 typed structures are no longer immediately discarded
4115 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4116 broadcast streams and synonym streams. FILE-LENGTH now also works
4117 on broadcast streams.
4119 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4120 * incompatible change: the --noprogrammer option, deprecated since
4121 version 0.7.5, has been removed. Please use the equivalent
4122 --disable-debugger option instead.
4123 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4125 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4126 inoperational for a while now) has been completely removed.
4127 * null lexical environments are now printed as #<NULL-LEXENV>,
4128 significantly reducing the amount of clutter in typical backtraces.
4129 * documentation on weak pointers, finalization, and after GC hooks
4130 has been added to the manual.
4131 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4132 as other specialized array types, is much faster. SUBSEQ and
4133 COPY-SEQ on such arrays have also been sped up.
4134 * optimization: EQL is now more efficient when at least other argument
4135 is known to be of type (OR FIXNUM (NOT NUMBER)).
4136 * fixed bug: the runtime is now less vulnerable to changes in the
4137 size of the SBCL object on OS X, and virtual memory is reserved for
4138 all spaces that need to be at a fixed address.
4139 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4140 * fixed bug: finalizers and after GC hooks that cause consing are now
4142 * fixed bug: compiler error messages and summaries are now printed to
4143 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4144 * fixed inference of the upper bound of an iteration variable.
4145 (reported by Rajat Datta).
4146 * fixed bug 211e: calling local functions with duplicated constant
4147 keyword argument no longer causes a bogus style warning about an
4149 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4150 ftype declaration to be disregarded. (reported by Dave Roberts)
4151 * fixed bug 373: caused by erronous compilation of references to alien
4152 variables in the runtime on ppc/darwin.
4153 * fixed bug 376: CONJUGATE type deriver.
4154 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4155 (reported by Baughn on #lisp)
4156 * a cross-compiler bug on non-x86 platforms has been identified and
4157 fixed. (thanks to Bruno Haible)
4158 * improvements to the MIPS runtime code for increased stability.
4159 (thanks to Thiemo Seufer)
4160 * increased the maximimum compact environment size to allow
4161 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4162 * partial workaround for bug 135: don't name the function we're
4163 calling for hairy cases of EVAL, so as not to accumulate one environment
4164 entry per call to EVAL. (reported by Kevin Reid)
4165 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4166 * optimization: type testing for non-vector arrays should be faster.
4167 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4169 * bug fix: setting 31st element of a bit vector to zero did not work
4171 * bug fix: redefining a class definition which failed due to a
4172 previous accessor / function clash now works (but see BUGS entry
4173 #380 for more problems in this area). (thanks to Zach Beane)
4174 * the long form of DEFINE-METHOD-COMBINATION disables method group
4175 checking when given a single method group with pattern *. (thanks
4177 * on x86 compiler supports stack allocation of results of simple
4178 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4179 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4180 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4181 * fixed some bugs related to Unicode integration:
4182 ** the restarts for recovering from input and output encoding
4183 errors only appear when there is in fact such an error to
4185 * fixed some bugs revealed by Paul Dietz' test suite:
4186 ** MISC.549 and similar: late transformation of unsafe type
4187 assertions into derived types caused unexpected code
4189 ** SCALE-FLOAT type deriver is less wrong.
4190 ** type derivers for EXP, LOG and similar functions compute result
4191 types for complex arguments better.
4192 ** (MISC.563) CONJUGATE type deriver works for very restricted
4194 ** out-of-line type testers for character strings are available.
4195 ** EQUAL compiler transform understands specialness of objects
4197 ** accessing double-floats stored on the stack now works on x86-64.
4198 ** debugger internals could sometimes create invalid lispobjs,
4199 resulting in GC crashes.
4200 ** MISC.548: type check weakening can convert required type into
4202 ** initialization forms for bindings are not in scope of free special
4205 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4206 * incompatible change: thread support for non-NPTL systems has
4207 been removed - locking is buggy and unreliable. A threaded
4208 SBCL build will now warn at startup and refuse to create
4209 new threads, unless futex support is detected in the kernel
4210 * incompatible change: the top level REPL now has only an ABORT
4211 restart associated with it, not TOPLEVEL and ABORT as it used to.
4212 TOP and TOPLEVEL are now available as debugger commands for
4213 returning to the top level.
4214 * incompatible change: forms evaluated in the REPL now use the
4215 global optimization policy.
4216 * incompatible change: user- and system-initialization files are
4217 no longer processed with LOAD, but by READ and EVAL; hence the
4218 global optimization policy, startup package, readtable, etc,
4220 * The .fasl file format number has been incremented because of
4221 various incompatible changes.
4222 * internal entry point details and argument counts no longer appear
4223 in backtraces unless explicitly requested by setting
4224 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4225 * built-in and standard functions no longer have names like "top
4226 level local call to FOO".
4227 * fixed bug 32: functions defined in non-null lexical environments
4228 now have more legible printed representation
4229 * fixed bug 33: functions defined in non-null lexical environemnts
4230 are now more amenable to inspection by INSPECT.
4231 * workaround for bug 354: XEPs no longer appear in backtraces unless
4232 explicitly requested.
4233 * fixed bug: receiving the signal which results from attempting to
4234 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4235 SIGBUS on other *BSDs) on architectures where the C stack is also
4236 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4237 to debugger confusion or wild instability. (reported by Cheuksan
4239 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4240 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4241 (reported by Lutz Euler)
4242 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4243 compiled code. (reported by Paul Dietz)
4244 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4245 specialized parameter to a method to something that is not TYPEP
4246 the specializer is now possible.
4247 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4248 face of package deletion.
4249 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4250 pathname. (reported by David Tolpin on c.l.l)
4251 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4252 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4253 STRING-STREAM and FILE-STREAM, respectively.
4254 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4255 than previously; in addition, its test suite is now run on build.
4256 (thanks to Luke Gorrie)
4257 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4258 * optimization: added a immediate representation for single-floats
4260 * fixed some bugs revealed by Paul Dietz' test suite:
4261 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4262 ** attempting to create a package with a colliding nickname causes
4263 correctable errors to be signalled.
4264 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4265 ** several x86-64 backend bugs related to sign-extension of immediate
4268 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4269 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4270 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4272 * fixed loading of multiply forward-referenced layouts.
4273 (thanks to Cheuksan Wang)
4274 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4275 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4276 (see COMPILE-FILE documentation for details of :PRINT option)
4277 * fixed bugs 19 and 317: fixed-format floating point printing is
4278 more accurate. This also fixes a bug reported by Adam Warner
4279 related to the ~@F format directive.
4280 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4282 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4283 dispatch table if the from-char is a dispatch macro character.
4284 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4285 by the wordsize no longer ignore the last word. (reported by Lutz
4287 * fixed bug in type checking of dynamic-extent variables. (reported
4289 * optimization: sequence traversal functions use their freedom to
4290 coerce function designators to functions.
4291 * optimization: code with many calls to CLOS methods specialized on
4292 CLOS classes has had redundant type checks removed.
4293 * optimization: added declarations to speed up operations that access
4294 the internal character database (for example STRING-UPCASE)
4295 * optimization: comparison operations between floats and sufficiently small
4296 fixnums no longer create extra rationals
4297 * fixed some bugs related to Unicode integration:
4298 ** portions of multibyte characters at the end of buffers for
4299 character-based file input are correctly transferred to the
4300 start of the buffer at the next read.
4301 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4302 passing it through to OPEN.
4303 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4304 argument given to internal calls to OPEN.
4305 ** the built-in comment readers (introduced by character sequences
4306 ";" and "#|") are more forgiving to encoding errors; they will
4307 STYLE-WARN and then attempt to resync the stream at a character
4308 boundary. (thanks to Teemu Kalvas)
4309 * fixed some bugs in the x86-64 port:
4310 ** Negative short int return values from c-calls are sign-extended
4312 ** The stack is aligned to 16-bytes for c-calls, as required by
4313 the ABI. (thanks to Cheuksan Wang)
4314 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4315 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4316 for enums. (thanks to Vincent Arkesteijn)
4317 ** Multiple small optimizations and bugfixes for floating point
4319 * fixed some bugs revealed by Paul Dietz' test suite:
4320 ** Space, Tab, Linefeed, Return and Page have the invalid
4321 secondary constituent character trait.
4322 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4324 ** WITH-INPUT-FROM-STRING should only update the index place on
4326 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4327 works more reliably.
4328 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4329 with one-dimensional arrays with fill pointers.
4330 ** TYPE-OF failed on a complex with an integer realpart and a
4332 ** compiler failure during type inference for the code of form
4333 (IF (EQL X (THE ...)) ...) (MISC.535).
4335 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4336 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4337 platform. The port supports 61-bit fixnums, large memory spaces
4338 and reloading shared object files.
4339 * enhancement: saving cores with foreign code loaded is now
4340 supported on ppc/Darwin in addition to the previously supported
4342 * enhancement: the statistical profiler now walks deeper into the
4343 call stack for more meaningful call-graphs and accrued time
4344 reports (x86/x86-64 only). It also now reports time spent in
4346 * enhancement: it is now possible to trace most individual methods
4347 of a generic function in addition to tracing the generic function
4349 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4351 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4352 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4353 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4354 produces an error. (thanks to Vincent Arkesteijn)
4355 * bug fix: NAMESTRING on pathnames with :WILD components in their
4356 directories works correctly. (thanks to Artem V. Andreev)
4357 * fixed bug 125: compiler preserves identity of closures. (reported
4359 * bug fixed: functions with &REST arguments sometimes failed with
4360 "Undefined function" when compiled with (DEBUG 3). (reported by
4362 * bug fix: overflow during compiling of setting element of a bit
4363 vector with constant index and value. (reported by Timmy Douglas)
4364 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4365 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4366 * on x86 compiler partially supports stack allocation of dynamic-extent
4368 * GO and RETURN-FROM do not check the extent of their exit points
4369 when compiled with SAFETY 0.
4370 * fixed some bugs related to Unicode integration:
4371 ** encoding and decoding errors are now much more robustly
4372 handled; it should now be possible to recover even from invalid
4373 input or output to the terminal. (thanks to Teemu Kalvas)
4374 ** provided a first cut at implementing STRING-TO-OCTETS and
4375 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4376 ** altered the SB-MD5 contributed module slightly, changing the
4377 interface just enough for it to be supportable for builds where
4378 lisp characters are not eight bits.
4379 * fixed some bugs revealed by Paul Dietz' test suite:
4380 ** the FORMATTER-generated functions for ~V[ conditionals require
4381 the correct number of arguments.
4382 ** READ-FROM-STRING returns the mandated second value when applied
4383 to displaced strings.
4384 ** the #\Rubout and #\Backspace characters are treated as invalid
4385 constituent characters by the tokenizer.
4387 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4388 * new feature: reloading changed shared object files with
4389 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4390 * new feature: references to foreign variables and functions
4391 can now be compiled and loaded before the corresponding shared
4392 object file is loaded, as long as the foreign definitions are
4393 available at runtime.
4394 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4395 supported. (thanks to Dan Debertin)
4396 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4397 just keywords. (thanks to Vincent Arkesteijn)
4398 * fixed bug #331: structure-class instances corresponding to
4399 DEFSTRUCT forms are now created eagerly.
4400 * fixed bug #345: backtraces from calls to undefined functions work
4401 on x86 as well. Related bug #61 is now also partially fixed on x86
4402 (backtraces from throws to unknown catch tags.)
4403 * bug fix: lambda-list parsing is now stricter vrt. order and number
4404 of lambda-list keywords.
4405 * bug fix: as specified by AMOP, an error is signalled if a
4406 class-option appears multiple times in a DEFCLASS form. (reported
4408 * bug fix: RANDOM can be compiled when the compiler derives the type
4409 of its numeric argument as a disjoint set of small integers.
4410 (reported by Paul Dietz)
4411 * bug fix: starting a core saved with shared objects loaded when
4412 those objects are not available no longer causes threaded SBCL to
4413 hang. (reported by Sean Ross)
4414 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4416 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4417 argument, which must always be NIL. (reported by Kalle Niemitalo)
4418 * bug fix: printing 1.0d+23 no longer results in an error.
4419 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4420 * bug fix: structure slot setters preserve evaluation order. (thanks
4422 * fixed some bugs related to Unicode integration:
4423 ** RUN-PROGRAM can allow its child to take input from a Lisp
4424 stream. (reported by Stefan Scholl)
4425 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4426 locales. (reported by Ken Causey)
4427 * fixed some bugs revealed by Paul Dietz' test suite:
4428 ** INCF, DECF and REMF evaluate their place form as specified in
4430 ** FORMATTER expands ~{ ~} iteration directives with V or #
4431 parameters correctly.
4432 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4433 consequent uses no arguments correctly.
4434 ** the system has a partial understanding of the (COMPLEX RATIO)
4436 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4439 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4440 * new feature: a build-time option (controlled by the :SB-UNICODE
4441 keyword feature, enabled by default) for building the system with
4442 support for the entire 21-bit character space defined by the
4444 * new feature: the system now has rudimentary external-format
4445 support; the primary user-visible change at this time is that
4446 characters with the high bit set (such as lower-case-e-acute) will
4447 print correctly to a terminal in a UTF-8 environment.
4448 * minor incompatible change: BASE-CHAR no longer names a class;
4449 however, CHARACTER continues to do so, as required by ANSI.
4450 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4451 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4452 has been moved to the SB-EXT package (temporarily re-exported from
4454 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4455 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4457 * fixed bug #351: better error-handlind and reporting for malformed
4459 * fixed bug #350: bignum-printing is now more memory-efficient,
4460 allowing printing of very large bignums, eg. (expt 2 10000000).
4461 (reported by Bruno Haible)
4462 * fixed bug #302: better primitive-type selection for intersection
4464 * fixed bug #308: non-graphic characters now all have names, as
4465 required. (reported by Bruno Haible)
4466 * bug fix: redefining a class with different superclasses now correctly
4467 removes it from the direct-subclasses of its previous superclasses.
4468 (reported by David Morse)
4469 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4470 new value now works. (reported by Bruno Haible)
4471 * bug fix: correct canonicalization of multiple non-standard slot
4472 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4473 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4474 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4475 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4476 now exists, an signals an error.
4477 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4478 during macroexpansion for non-iteration variables as well. (reported
4479 by Bruno Haible for CMUCL)
4480 * bug fix: Cyclic structures and unprintable objects in compiler
4481 messages no longer cause errors. (reported by Bruno Haible)
4482 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4483 and READ-FROM-STRING all now return a primary value of NIL if
4484 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4485 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4486 (reported by Bruno Haible for CMUCL)
4487 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4488 do not designate a condition. (reported by Bruno Haible for
4490 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4491 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4492 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4493 permitting resolution in favour of any of the conflicting symbols.
4494 (reported by Bruno Haible for CMUCL)
4495 * bug fix: EQUAL compiler optimizations is less aggressive on
4496 strings which can potentially compare true despite having distinct
4497 specialized array element types.
4498 * bug fix: unit enumerations can be defined without dividing by
4499 zero. (thanks to Vincent Arkesteijn)
4500 * FORMAT compile-time argument count checking has been enhanced.
4501 (report from Bruno Haible for CMUCL)
4502 * a partial workaround for the bug 262: the compiler does not try to
4503 inline-expand a local function doing RETURN-FROM from a deleted
4504 BLOCK. (thanks to Peter Denno for the bug report and to David
4505 Wragg for the simple test case)
4506 * fixed some bugs revealed by Paul Dietz' test suite:
4507 ** RENAME-PACKAGE allows all package designators as new package
4509 ** constraint propagation and lambda variable substitution are
4510 more cautious in dealing with partially deleted code.
4511 ** compiler sometimes lost reoptimization passes.
4512 ** CERROR, given a condition as condition designator, passes its
4513 remaining arguments to the continue format control without
4515 ** Case-altering FORMAT directives work correctly on non-ASCII
4517 ** The REAL type specifier handles bounds outside the floating
4518 point ranges without signalling FLOATING-POINT-OVERFLOW.
4519 ** Functions with IR1-transformations can create intercomponent
4520 references to global functions.
4521 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4523 ** FORMAT ~R treats a nil value for its first parameter correctly.
4525 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4526 * enhancement: saving cores with foreign code loaded is now
4527 supported on x86/NetBSD and sparc/Linux in addition to the previously
4528 supported platforms.
4529 * bug fix: on some platforms repeated installations caused multiple
4530 copies of HTML documentation to be installed -- should not happen
4531 any more. (reported by Stefan Scholl)
4532 * bug fix: parsing self-recursive alien record types multiple times
4533 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4534 original patch by Helmut Eller for CMUCL)
4535 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4536 (thanks to Richard Kreuter)
4537 * bug fix: defining classes whose accessors are methods on existing
4538 generic functions in other (locked) packages no longer signals
4539 bogus package lock violations. (reported by François-René Rideau)
4540 * bug fix: special variables as DEFMETHOD parameters no longer have
4541 associated bogus type declarations. (reported by David Wragg and
4543 * bug fix: read-write consistency on streams of element-type
4544 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4545 * bug fix: redefiniton of the only method of a generic function with
4546 no DEFGENERIC no longer emits a full WARNING. In addition,
4547 redefinition of generic functions with no DEFGENERIC to an
4548 incompatible lambda list now signals an error. (thanks to Zach
4550 * bug fix: DEFGENERIC now works even when there's a function of the
4551 same name in an enclosing lexical environment. (thanks to Zach
4553 * fixed compiler failure, caused by instrumenting code during
4554 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4555 * optimization: added loop analysis and improved register allocation
4556 * fixed some bugs revealed by Paul Dietz' test suite:
4557 ** POSITION on displaced vectors with non-zero displacement
4558 returns the right answer.
4559 ** (SIMPLE-STRING) is a valid type specifier for sequence
4561 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4563 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4564 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4566 ** The justification version of the FORMAT ~< directive treats
4567 non-zero minpad parameter correctly.
4569 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4570 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4571 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4572 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4573 the supported interface.
4574 * new feature: Single-stepping of code compiled with DEBUG 2 or
4575 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4576 * new feature: saving cores with foreign code loaded is now
4577 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4578 Timothy Moore's work for CMUCL)
4579 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4580 parameters to * instead of NIL if no initform is supplied.
4581 (reported by Johan Bockgaard)
4582 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4583 correctly when FUNCALL appears as the car of the form. Note:
4584 despite this FUNCALL forms are not currently subject to
4585 compiler-macro expansion. (port of Raymond Toy's fix for the
4586 same from CMUCL, reported by Johan Bockgaard)
4587 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4588 (thanks for Teemu Kalvas)
4589 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4590 case instead of terminating the iteration (thanks for Julian
4591 Squires, Sean Champ and Raymond Toy)
4592 * bug fix: incorrect expansion of defgeneric that caused a style
4593 warning. (thanks for Zach Beane)
4594 * bug fix: slot accessor effective method computation works properly
4595 for classes with multiple non-standard applicable methods on
4596 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4597 * on x86 compiler supports stack allocation of results of LIST and
4598 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4599 CMUCL implementation by Gerd Moellmann)
4600 * fixed some bugs revealed by Paul Dietz' test suite:
4601 ** FORMAT strings with both the ~<~:;~> form of the justification
4602 directive and pretty-printing directives cause an error.
4604 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4605 * incompatible change: the internal functions
4606 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4607 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4608 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4609 instead of the old functions.
4610 * new feature: on platforms where "dladdr" is available foreign
4611 function names now appear in backtraces. (based on Helmut Eller's
4613 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4614 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4616 * documentation: ASDF manual is now distributed with SBCL.
4617 * bug fix: SBCL can now load its contributed modules with REQUIRE
4618 even if the system-provided entries have been removed from
4619 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4621 * bug fix: backtraces involving undefined functions or assembly
4622 routines are more informative. (thanks to Brian Downing)
4623 * bug fix: mutually referent alien structures now work correctly.
4624 (reported by Rick Taube)
4625 * bug fix: structures defined by WITH-ALIEN can be referred to
4626 within other definitions in the same WITH-ALIEN.
4627 * bug fix: division operators (MOD, TRUNCATE and the like) with
4628 constant zero divisors and integer dividends no longer generate
4630 * bug fix: provide default methods for INPUT-STREAM-P and
4631 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4632 * bug fix: improve the detection and resolution of MOP metacycles
4633 (where effective method computation depends on the generic function
4634 having its effective method computed). (reported by Bruno Haible)
4635 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4636 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4637 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4638 * bug fix: pathnames with relative directory components can be
4639 represented relative to default pathnames.
4640 * optimization: in taking the GCD of bignums, reduce the two bignums
4641 to approximately the same size (using Euclid's algorithm) before
4642 applying the more sophisticated binary GCD. (thanks to Juho
4644 * optimization: COUNT on bitvectors now operates word-at-a-time.
4645 * optimization: ASH with a positive, but not necessarily constant,
4646 (leftwards) shift, when in a modular context, is compiled to a
4648 * fixed some bugs revealed by Paul Dietz' test suite:
4649 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4650 if the corresponding argument is NIL.
4651 ** FORMAT directives accepting a minpad parameter treat negative
4653 ** literal commas as character parameters to FORMAT directives are
4655 ** literal spaces directly after ~<Newline> directives within a
4656 format-logical-block (~:< ~@:>) do not induce :FILL-style
4657 conditional newlines.
4658 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4659 as specified: it no longer includes conditional newlines).
4660 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4662 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4663 :PER-LINE-PREFIX argument does not evaluate to a string.
4665 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4666 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4667 the manual for details; for now, package locks can be disabled by
4668 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4669 if no major problems are found then it is likely that they will be
4670 compiled in unconditionally.
4671 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4672 unsupported operators on all platforms. To load a shared library
4673 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4674 object file, link it into a shared library outside of SBCL and
4675 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4677 * bug workaround: ROOM T and the GC were not working together
4678 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4679 reporting facility aren't preserved. That reporting has been
4680 disabled, so now until and unless someone figures out how to make it
4681 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4682 * minor incompatible change: as threatened around sbcl-0.8.0, the
4683 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4684 The symbols are also exported from SB-PCL for backwards
4685 compatibility, but more so than before SB-PCL should be treated as
4686 an implementation-internal package.
4687 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4689 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4690 It is known as of this release not to work on the Alpha, however.
4691 * fixed bug #167: errors signalled due to illegal syntax in method
4692 bodies are now more legible.
4693 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4694 designators and can hence be used with TYPEP.
4695 * fixed bug #333: CHECK-TYPE now ensures that the type error
4696 signalled, if any, has the right object to be accessed by
4697 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4698 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4699 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4701 * fixed bug #334: programmatic addition of slots using specialized
4702 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4703 and :ALLOCATION :CLASS slots.
4704 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4705 float exponents. (rereported by Peter Seibel)
4706 * fixed a bug: #\Space (and other whitespace characters) are no
4707 longer considered to be macro characters in standard syntax by
4708 GET-MACRO-CHARACTER.
4709 * fixed bug: initialization of condition class metaobjects no longer
4710 causes an instance of the condition to be created. (reported by
4712 * fixed bug: it is now possible to have slots such that
4713 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4714 description is neither :INSTANCE nor :CLASS.
4715 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4716 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4717 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4718 non-standard SLOT-DEFINITION-ALLOCATION values.
4719 * fixed bugs: various race conditions handling exiting threads.
4720 CL-PPCRE's thread torture test now passes.
4721 * fixed arguably-a-bug: GC time proportional to number of threads in
4722 system even when most of them are idle
4723 * optimization: improved performance of BIT and SBIT on bit-vectors.
4724 * .fasl file incompatibility: The fasl file version number has
4725 been incremented because of changes associated with package locks.
4727 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4728 * minor incompatible change: the system no longer provides
4729 optimization hints (conditions which are TYPEP
4730 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4731 mode; these hints are still emitted when higher SPEED optimization
4733 * new contrib module: a sampling profiler (profiling by statistical
4734 sampling, rather than by instrumenting functions) is available as
4735 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4736 * the behaviour of the standard function ED is now customizeable by
4737 third parties through a hook variable: see ED's documentation
4738 string for information on the protocol.
4739 * the compiler no longer emits efficiency notes for (FUNCALL X)
4740 when the type of X is uncertain under default optimization
4742 * fixed bug 276: mutating a binding of a specialized parameter to a
4743 method to something that is not TYPEP the specializer is now
4745 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4746 exhibit the required behaviour on the x86 platform. (thanks to
4747 Peter van Eynde, Eric Marsden and Bruno Haible)
4748 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4749 even for difficult arguments. (reported by Peter Graves)
4750 * fixed bug 141a: the backquote printer now descends quoted
4752 * fixed another bug in backquote printing: no more destructive
4753 modification of the form's list structure. (reported by Brian
4755 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4756 move between its address being taken and the call to
4757 interrupt_thread, fixing a crashing race condition.
4758 * the SB-POSIX contrib implementation has been adjusted so that it
4759 no longer exhibits ridiculously poor performance when constructing
4760 instances corresponding to C structs.
4762 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4763 * minor incompatible change: the sb-grovel contrib now treats C
4764 structures as alien (in the sense of SB-ALIEN) objects rather than
4765 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4766 has implications for memory management of client code
4767 (sb-grovel-returned objects must now be manually managed) and for
4768 type safety (alien objects now have full types).
4769 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4770 used to control emission of compiler diagnostics, rather than the
4771 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4772 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4773 quality should be considered deprecated.
4774 * install.sh now installs the user manual as well
4775 * (not quite a new documentable feature, but worth considering in
4776 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4777 beginnings of a semantically meaningful condition hierarchy is
4778 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4780 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4781 designator as the defaults argument.
4782 * fixed bug: Displaced arrays whose displaced-to array has become
4783 too small now cause ARRAY-DIMENSION to signal an error, providing
4784 for safer bounds-checking. (reported by Bruno Haible)
4785 * fixed bug: DEFCLASS slot definitions with identical :READER and
4786 :WRITER names now signal a reasonable error. (reported by Thomas
4788 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4790 * fixed bug: Invalid slot specification errors now print correctly.
4791 (thanks to Zach Beane)
4792 * fixed bug 320: Shared to local slot value transfers in class
4793 redefinitions now happen corrently from superclasses as
4794 well. (reported by Bruno Haible)
4795 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4797 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4798 improper lists correctly. (reported by Bruno Haible)
4799 * fixed bug 313: source-transform for <fun-name> was erroneously
4800 applied to a call of a value of a variable with name <fun-name>.
4801 (reported by Antonio Menezes Leitao)
4802 * fixed bug 307: The obsolete instance protocol ensures that
4803 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4804 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4805 remove dead unknown-values globs from the middle of the stack.
4806 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4807 easier to resume long computations after using *BREAK-ON-SIGNALS*
4808 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4809 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4810 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4811 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4812 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4813 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4815 * fixed a (fairly theoretical) bug in string printing: if
4816 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4817 does not have array-element-type equal to the most general string
4819 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4820 function name. (thanks to Nikodemus Siivola)
4821 * fixed bug: compile-time format string checker failed on
4822 non-closed ~{. (reported by Thomas F Burdick)
4823 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4824 don't warn on legal loop code involving more than one aggregate
4825 boolean. (thanks to Nikodemus Siivola)
4826 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4827 in keyword position to MAKE-PACKAGE was not being reported as
4829 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4830 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4832 * fixed bugs 280 and 312: the checking for multiple definitions in a
4833 file is less likely to become confused by uses of inline
4835 * fixed bug: the #S reader macro performs the keyword coercion
4836 specified for slot names. (reported by Kalle Niemitalo)
4837 * fixed bug: lambda lists may contain symbols whose names start with
4838 & but are not lambda-list-keywords; their occurrence triggers a
4840 * fixed bug 321: define-method-combination argument lambda lists do
4841 not cause invalid code to be generated when &optional or &aux
4842 variables have default values. (reported by Bruno Haible)
4843 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4844 have CLOS classes; this appears also to have fixed reported
4845 instability in stack exhaustion detection.
4846 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4847 MUFFLE-WARNING when no associated restart is present is now
4849 * optimization: rearranged the expansion of various defining macros
4850 so that each expands into only one top-level form in a
4851 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4853 * optimization: used a previously little-used slot in symbols to
4854 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4856 * fixed some bugs revealed by Paul Dietz' test suite:
4857 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4859 ** Fixed an optimization bug related to inheritance of initforms
4860 from local to shared slots.
4861 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4862 ** CAST optimizer forgot to flush argument derived type.
4863 ** print/read consistency on floats is now orders of magnitude
4864 more likely. (thanks also to Bruno Haible for a similar report
4866 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4867 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4868 for objects of type REAL. Make it so.
4869 ** SXHASH is specified (infelicitously) to respect similarity,
4870 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4871 it so. (thanks to Markus Ziegler)
4872 ** on the Alpha, the compiler succeeds in compiling functions
4873 returning a known number of arguments greater than 63.
4874 ** fixed handling of invalid NIL arguments in keyword position
4876 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4878 ** provided a readably-printable representation for RANDOM-STATE
4880 ** ensured that pathnames, where they have a namestring, always
4881 print using #P"..." syntax.
4883 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4884 * Support for the forthcoming 2.0 version of the NetBSD kernel
4885 running on x86 hardware has been added. (thanks to Perry
4886 E. Metzger most immediately, and others for their past work)
4887 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4888 current release version; SBCL's OpenBSD support had been broken
4889 since about the time of OpenBSD's switch to ELF binary format.)
4890 * [placeholder for DX summary]
4891 ** user code with &REST lists declared dynamic-extent, under high
4892 speed or space and low safety and debug optimization policy.
4893 * The manual has been converted to Texinfo format and the debugger
4894 chapter from the cmucl manual has been added.
4895 * A facility has been added to extract documentation strings from
4896 sbcl and store them as Texinfo-formatted snippets for inclusion in
4897 the manual (via Texinfo's @include directive)
4898 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4899 the test case to Dave Roberts)
4900 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4901 pointers. (reported by Sean Ross)
4902 * bug fix: PROFILE output is printed nicely even for large numerical
4903 values. (thanks to Zach Beane)
4904 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4905 greater than 32 handle EOF correctly.
4906 * bug fix: on X86 an immediate argument of the IMUL instruction is
4907 correctly printed in disassembly. (thanks to Lutz Euler)
4908 * bug fix: class slots in redefined classes preserve their old
4909 values. (thanks to Bruno Haible and Nikodemus Siivola)
4910 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4911 succeeds. (reported by Marco Baringer)
4912 * fixed some bugs revealed by Paul Dietz' test suite:
4913 ** READ-SEQUENCE now works on ECHO-STREAMs.
4914 ** RATIONALIZE works more according to its specification. (thanks
4917 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4918 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4919 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4920 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4921 should matter to you only if you rebind the printer control
4922 variables and then find you want different bindings in the
4923 debugger than in the ordinary execution of your program.)
4924 * The runtime build system has been tweaked to support building
4925 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4926 assembler and linker. (thanks to Nikodemus Siivola)
4927 * Unbound, undefined, undeclared variables now trigger full
4928 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4929 more often programmer error than deliberate exploitation of undefined
4931 * optimization: the hash algorithm for strings has changed to one
4932 that is less vulnerable to spurious collisions. (thanks to Juho
4934 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4935 needless bounds checking. (thanks to Juho Snellman)
4936 * optimization: implemented multiplication as a modular
4937 (UNSIGNED-BYTE 32) operation on the PPC backend.
4938 * fixed some bugs revealed by Paul Dietz' test suite:
4939 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4941 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4942 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4943 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4945 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4947 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4949 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4950 their output stream on EOF from read.
4951 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4952 have been read to end-of-file.
4953 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4955 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4956 description of determination of which consecutive characters
4958 ** Printing the "Space" character with escaping on now yields "#\\ ",
4959 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4960 ** Reading floating-point numbers with *READ-BASE* set to a number
4961 less than 10 works correctly.
4962 ** Reading floating-point numbers with *READ-BASE* set to a number
4963 more than 10 works correctly.
4964 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4965 the readtable currently in effect.
4967 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4968 * minor incompatible change: parsing of namestrings on a physical
4969 (Unix) host has changed; numbers after the final #\. in a
4970 namestring are no longer interpreted as a version field. This is
4971 intented to be largely invisible to the user, except that the
4972 meaning of the namestring "*.*.*" has changed: it now refers to a
4973 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4974 should usually be replaced by
4975 (make-pathname :name :wild :type :wild :version :wild)
4976 with the added benefit that this is more likely to be portable.
4977 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4978 option to OPEN now signals an error if the file being opened
4979 exists; this may have an impact on existing code.
4980 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4981 signals received, on the PowerPC platforms (both Linux and
4982 Darwin). (thanks to Pierre Mai for pointing out the location of
4984 * several fixes on OS X: The system now builds and runs cleanly on
4985 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4986 (thanks to Brian Mastenbrook)
4987 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4988 second-resolution: integer multiples of 1/3600 between -24 and 24.
4989 (thanks to Vincent Arkesteijn)
4990 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4991 type when called with 1 argument; PEEK-CHAR checked type of
4992 PEEK-TYPE only after having read first character from a
4993 stream. (reported by Peter Graves)
4994 * bug fix: the garbage collector now has much better locality
4995 behaviour, and in particular no longer treats all memory as being
4996 exhausted when many small objects point to each other in a deeply
4998 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4999 recognized as being TYPEP their class.
5000 * bug fix: the PUSHNEW documentation string has been corrected.
5001 (thanks to Vincent Arkesteijn)
5002 * bug fix: defaulting of the value for the last of an atypically
5003 large number of multiple values being bound was not being
5004 performed correctly on the Alpha or PPC platforms
5005 * optimization: implemented multiplication as a modular
5006 (UNSIGNED-BYTE 32) operation on the x86 backend.
5007 * optimization: SEARCH on simple-base-strings can now be open-coded.
5008 (see also contrib/compiler-extras.lisp for inspiration for
5009 teaching the compiler about the Boyer-Moore algorithm).
5010 * value, returned by MAX (and MIN) called with several EQUALP, but
5011 not EQL, arguments now does not depend on compiler settings.
5012 * fixed some bugs revealed by Paul Dietz' test suite:
5013 ** in stack analysis liveness information is propagated from
5014 non-local entry points.
5015 ** pathwise CAST removing failed when the CAST node did not start
5017 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5018 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5020 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5021 host is already defined.
5022 ** RENAME-FILE works on streams instead of signalling an internal
5024 ** PEEK-CHAR uses the current readtable when determining whether
5025 or not a character is whitespace.
5026 ** MERGE-PATHNAMES handles the case when the pathname does not
5027 specify a name while the default-pathname specifies a version.
5028 ** Pathnames now stand a better chance of respecting print/read
5030 ** Attempting to use standardized file system operators with a
5031 pathname with invalid :DIRECTORY components signals a
5033 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5035 ** DIRECTORY on logical pathnames is more correct.
5036 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5037 signal a TYPE-ERROR if their argument is not a stream.
5038 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5039 designator argument does not designate a stream.
5040 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5041 examining the synonym.
5042 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5044 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5045 element-type larger than ([UN]SIGNED-BYTE 32).
5047 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5048 * When built with the :SB-FUTEX feature, threaded builds now take
5049 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5050 for faster/more reliable mutex and condition variable support.
5051 * Incompatible change (but one you probably shouldn't have been using
5052 anyway): the interface and code for arbitrating between multiple
5053 threads in the same user session has been redesigned.
5054 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5055 error when called without an explicit environment argument.
5056 (thanks to Nikodemus Siivola)
5057 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5058 confused about their position. (thanks to Adam Warner and Gerd
5060 * bug fix: Pretty printing backquoted forms with unquotations in the
5061 argument list position of various code constructs such as LAMBDA
5062 now works correctly. (reported by Paul Dietz)
5063 * bug fix: Pretty printing unquotations no longer loses all
5064 stream position information.
5065 * optimization: performance of string output streams is now less
5066 poor for multiple small sequence writes.
5067 * optimization: performance of CSUBTYPEP in the presence of complex
5068 expressions involving CONS and NOT many times has been improved.
5069 (reported by Paul Dietz)
5070 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5072 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5073 streams for the REPL, for the debugger, and so on. (thanks to
5075 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5076 * fixed some bugs revealed by Paul Dietz' test suite:
5077 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5078 is ignored if it is too small, rather than propagating through
5079 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5080 ** extremely complex negations of CONS types were not being
5081 sufficiently canonicalized, leading to inconsistencies in
5083 ** VALUES tranformer lost derived type.
5085 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5086 * fixed a bootstrapping bug: the build process no longer assumes
5087 that the various BOOLE-related constants have the same value in
5088 host and target lisps. (noted by Paul Dietz' test suite on an
5089 SBCL binary built from CLISP)
5090 * The system can now be dynamically linked on the MIPS platform,
5091 which enables dynamic loading of foreign code from Lisp. (thanks
5092 to Ralf Baechle for discussions on the MIPS ABI)
5093 * The system now records debugging information for its own source
5094 files in a filesystem-position-independent manner, relative to
5095 the "SYS" logical host.
5096 * fixed a compiler bug: MV-LET convertion did not check references
5097 to the "max args" entry point. (reported by Brian Downing)
5098 * tweaked disassembly notes to be less confident about proclaiming
5099 some instruction as an LRA. (thanks to Brian Downing)
5100 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5101 now each have their own history, command character, and other
5102 characteristics. (thanks to David Lichteblau)
5103 * fixed some bugs revealed by Paul Dietz' test suite:
5104 ** compiler failure in compiling LOGAND expressions including a
5106 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5107 shift greater than 32.
5108 ** FLUSH-DEST did not mark blocks for type check regeneration.
5109 ** HANDLER-CASE failed to accept declarations in handler clauses
5110 in some circumstances.
5112 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5113 * New code in contrib/sb-introspect (still probably not entirely
5114 stable yet) provides some support for smart Lisp development
5115 environments like SLIME.
5116 * The conditions signalled for errors occurring when loading .fasl
5117 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5118 in a way which should help ASDF recover gracefully.
5119 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5120 stuff has been cleaned up. If you code contrib/ stuff, this might
5121 affect you, and you can look at contrib/README, contrib/STANDARDS,
5122 and/or the 0.8.4.27 diff to check.
5123 * In full calls the compiler now does not generate checks for declared
5124 argument types for all arguments.
5125 * various threading fixes
5126 ** and some experimental patches which didn't make it into
5127 the main tree for this release, but which are shipped in
5128 contrib/experimental-thread.patch as a possible fix for some
5129 failures (deadlock, spinning...) in GC-intensive multithreaded
5131 * fixed PPC build problem (source code incompatibility of different
5132 library versions): added offsetof() hackery which attempts to divine
5133 where glibc maintainers put uc_mcontext today
5134 * fixed bug 282: compiler does not trust type assertions while passing
5135 arguments to a full call.
5136 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5137 &OPTIONAL VALUES type parameter.
5138 * fix bug 214: algorithm for noting rejected templates is now more
5139 similar to that of template seletion. (also reported by rydis on
5141 * fixed bug 141b: printing backquoted information readably and prettily
5142 inserts a space where necessary.
5143 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5144 (CHARACTER 10) are now reported as errors, rather than propagated
5145 as unknown types. (reported by piso on #lisp)
5146 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5147 with values NIL and :ERROR. (thanks to Milan Zamazal)
5148 * fixed bug 191c: CLOS now does proper keyword argument checking as
5149 described in CLHS 7.6.5 and 7.6.5.1.
5150 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5151 longer raise an error; further, using a list as a for-as-arithmetic
5152 counter now raises a meaningful error.
5153 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5154 now understood by sequence creation functions such as MAKE-SEQUENCE
5156 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5157 a STRING-INPUT-STREAM.
5158 * compiler enhancement: SIGNUM is now better able to derive the type
5160 * type declarations inside WITH-SLOTS are checked. (reported by
5162 * fixed some bugs revealed by Paul Dietz' test suite:
5163 ** incorrect optimization of TRUNCATE for a positive first
5164 argument and negative second.
5165 ** compiler failure in let-convertion during flushing dead code.
5166 ** compiler failure while deriving type of TRUNCATE on an
5167 interval, containing 0.
5168 ** ASH of a negative bignum by a negative bignum count now returns
5170 ** intersection of CONS types now canonicalizes properly, fixing
5171 inconsistencies in SUBTYPEP.
5173 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5174 * incompatible change: The --disable-debugger command line
5175 option now clobbers the debugger at a more fundamental
5176 level, by redefining #'INVOKE-DEBUGGER instead of by
5177 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5178 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5179 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5180 enter the debugger REPL and then suffer recursive errors
5181 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5182 while under the new system, BREAK in --disable-debugger mode
5183 terminates the system just as an unhandled error would.
5184 * fixed compiler performance when processing loops with a step >1;
5185 * bug fix: DOCUMENTATION now retrieves generic function
5186 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5187 support has been systematized, and now supports the methods
5188 specified by ANSI, along with a default method and a method for
5189 slot documentation. (reported by Nathan Froyd)
5190 * bug fix: effective methods associated with a generic function are
5191 no longer cached over a change of that generic function's method
5192 combination. (reported by Andreas Fuchs)
5193 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5194 names a non-existent directory. (thanks to Andreas Fuchs)
5195 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5196 the PPC platform, lead to stack corruption; this has been fixed.
5197 (reported by Rainer Joswig)
5198 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5199 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5200 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5201 arithmetic in general, is now much more reliable on the PPC
5203 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5204 platform now returns the right answer.
5205 * optimization: restored some effective method precomputation in
5206 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5207 precomputation is now tunable.
5208 * optimization: compiler-internal data structure use has been
5209 reviewed, and changes have been made that should improve the
5210 performance of the compiler by about 20%.
5211 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5212 simple-base-strings and simple-bit-vectors is improved.
5213 * optimization: the optimization of 32-bit logical and arithmetic
5214 functions introduced in version 0.8.3 on the x86 has been
5215 implemented on the mips, ppc and sparc platforms; an
5216 implementation of the same facility, but for 64-bit arithmetic,
5217 has been added for the alpha.
5218 * microoptimization: the compiler is better able to make use of the
5219 x86 LEA instruction for multiplication by constants.
5220 * bug fix: in some situations compiler did not report usage of
5221 generic arithmetic in (SPEED 3) policy.
5222 * bug 145b fix: compiler used wrong type specifier while converting
5223 MEMBER-types to numeric.
5224 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5226 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5227 index argument now works properly on the Alpha platform.
5228 * bug fix: floating point exception treatment on the Alpha platform
5230 * bug fix: FILE-POSITION works much better on string input and
5231 output streams. (thanks to Nikodemus Siivola)
5232 * bug fix: many threading/garbage collection symptoms sorted.
5233 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5234 might be pseudo-atomic.
5235 * internal change: Stopping for GC is now done with signals not
5236 ptrace. GC is now done in whichever thread wanted it, instead of
5238 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5240 * bug fix: result form in DO is not contained in the implicit
5242 * incompatible change: ICR structure is changed; the value part of
5243 CONTINUATION is now called LVAR; corresponding functions are
5244 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5245 * added type deriver for ISQRT (thanks to Robert E. Brown).
5246 * bug fix: better support for loading from the command line when an
5247 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5249 * fixed some bugs revealed by Paul Dietz' test suite:
5250 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5251 ** ROUND and FROUND now give the right answer when given very
5252 small float arguments.
5253 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5255 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5256 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5257 ** LCM should return a non-negative integer.
5258 ** PARSE-INTEGER returned the index of a terminator instead of the
5259 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5260 ** PARSE-INTEGER returned an incorrect index being applied to a
5262 ** LCM with two arguments of 0 returns 0 rather than signalling
5264 ** unsigned addition of a 32-bit constant with the high bit set no
5265 longer causes an internal compiler error on the x86.
5266 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5267 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5268 with negative last argument.
5269 ** byte specifiers with zero size and position no longer cause
5270 an error during type derivation.
5271 ** bignum multiplication on the Alpha platform now returns the
5273 * porting: The system now builds on SuSE AMD64, although it still
5274 generates a 32-bit binary.
5275 * .fasl file incompatibility: The fasl file version number has
5276 been incremented (because of the changes to internal compiler
5277 data structures referred to above).
5279 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5280 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5281 more accurately, on the Darwin kernel running on PowerPC hardware.
5282 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5283 * Compiler code deletion notes now signal a condition of type
5284 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5285 an associated MUFFLE-WARNING restart.
5286 * The compiler now performs limited argument count validation of
5287 constant format strings in FORMAT, and where appropriate in ERROR,
5288 CERROR and WARN. (thanks to Gerd Moellmann)
5289 * New ASDF-INSTALL contrib can be used for automatic download and
5290 installation of third-party Lisp code from CCLAN or other sites
5292 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5293 which forces another thread to execute a function supplied by the
5295 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5296 now accept and act upon their :ELEMENT-TYPE keyword argument.
5297 (reported by Martin Atzmueller, Edi Weitz)
5298 * bug fix: FILE-POSITION now accepts position designators up to
5299 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5300 is the greater. (thanks to Patrik Nordebo)
5301 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5302 Kalle Olavi Niemitalo)
5303 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5304 printable. (reported by Eric Marsden)
5305 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5306 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5307 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5308 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5309 (thanks to Stig Sandoe)
5310 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5311 UNREAD-CHAR now correctly includes the unread character in the
5312 target sequence. (thanks to Gerd Moellmann)
5313 * bug fix in threaded builds: the system can now be suspended and
5314 resumed by shell job control with minimal disruption.
5315 * bug fixes in times and timezones >2038AD
5316 * better handling of "where is GNU make?" problem in build scripts
5317 (thanks to Nikodemus Siivola)
5318 * new optimization: inside a named function any reference to a
5319 function with the same name is considered to be a self-reference;
5320 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5321 optimization quality.
5322 * new optimization on x86: logical functions and + now have
5323 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5324 used when the result is truncated to 32 bits.
5325 * VALUES declaration is partially enabled.
5326 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5327 * fixed some bugs revealed by Paul Dietz' test suite:
5328 ** The system now obeys the constraint imposed by
5329 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5330 types form a lattice under type intersection.
5331 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5332 ** ASSOC now ignores NIL elements in an alist.
5333 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5334 and (1+ MOST-POSITIVE-FIXNUM) answers.
5335 ** The addition of a method with invalid qualifiers to a generic
5336 function does not cause an error to be signalled immediately;
5337 a warning is signalled, and the error is generated only on
5338 calling the generic function.
5339 * changed .fasl file version number, in part to add type codes for
5340 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5341 obscure ANSI requirements
5343 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5344 * fixed bug 148: failure to inline-expand a local function left
5345 garbage, confusing the compiler.
5346 * fixed bugs 3cd: structure slot readers perform type check if the
5347 slot can have an invalid value (i.e. it is either not initialized
5348 or can be written with a less specific slot writer).
5349 * bug fix: the compiler now traps array references to elements off
5350 the end of an array; previously, the bounds checking in some
5351 circumstances could go off-by-one.
5352 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5354 * type declarations for array element types now obey the description
5355 on the CLHS page "Declaration TYPE", as per discussions on
5356 sbcl-help around 2003-05-08. This means that a declaration
5357 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5358 declaration, all references to BAR will be asserted or assumed
5359 (with THE, so dependent on compiler policy) to involve objects of
5360 type FOO. Note that no such declaration is implied in
5361 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5362 * declared types of functions from the "Conditions"
5363 chapter. (reported by Paul Dietz)
5364 * bug fix: CERROR accepts a function as its first argument.
5365 * bug fix: NTH an NTHCDR accept a bignum as index
5366 arguments. (reported by Adam Warner)
5367 * optimization: character compare routines now optimize comparing
5368 against a constant character. (reported by Gilbert Baumann)
5369 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5370 argument now works properly on the MIPS platform.
5371 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5372 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5373 declared to have a functional type, does not cause an error
5375 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5376 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5377 * fixed bug: if last continuation of a deleted block has a
5378 destination, this destination should be deleted too. (reported by
5380 * fixed a bug in the bootstrap process: the host compiler's values
5381 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5382 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5383 test case from Patrik Nordebo)
5384 * improved the ability of the disassembler on the PPC platform to
5385 provide helpful disassembly notes.
5386 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5387 the class in more cases than previously.
5388 * bug fix: FILE-POSITION now understands :START and :END for
5389 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5390 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5391 8) data. (thanks to David Lichteblau)
5392 * bug fix: it is possible to add a method to a generic function
5393 without lambda list.
5394 * bug fix: reader failed to signal END-OF-FILE inside an
5395 object representation. (reported by Nikodemus Siivola)
5396 * fixed some bugs revealed by Paul Dietz' test suite:
5397 ** LAST and [N]BUTLAST should accept a bignum.
5398 ** condition slot accessors are methods.
5399 ** (VECTOR NIL) is a subtype of STRING.
5401 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5402 * minor incompatible change: some nonsensical specialized lambda
5403 lists (used in DEFMETHOD) which were previously ignored now signal
5405 * minor incompatible change: the system is now aware of the types of
5406 variables in the COMMON-LISP package, and will signal errors for
5407 most violations of these type constraints (where previously they
5408 were silently accepted).
5409 * minor incompatible change: COMPILE-FILE now uses the freedom
5410 afforded (ANSI 3.2.2.3) to use derived function types for
5411 functions defined in the same file. This also permits the system
5412 to warn on static type mismatches and function
5413 redefinition. (Currently it does not work with high DEBUG level.)
5414 * minor incompatible change: VALUES declaration is disabled.
5415 * When issuing notes, the compiler now signals a condition of type
5416 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5417 restart for use in user handlers. It is expected that the
5418 COMPILER-NOTE condition will eventually become a condition
5419 supertype to a hierarchy of note types, which will then be
5420 handleable in a similar fashion. However, at the moment, no such
5421 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5422 but it's an implementation detail, not a classification for the
5424 * Changes in type checking closed the following bugs:
5425 ** type checking of unused values (192b, 194d, 203);
5426 ** template selection based on unsafe type assertions (192c, 236);
5427 ** type checking in branches (194bc).
5428 * A short form of VALUES type specifier has ANSI meaning (it has
5429 increased the number of situations when SBCL cannot perform type
5431 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5432 keywords or constants is permissible.
5433 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5434 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5435 classes. (thanks to Antonio Martinez)
5436 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5437 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5438 argument to a pretty-print stream. Instead, it leaves any such
5439 operations to DESCRIBE-OBJECT methods.
5440 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5442 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5443 lambda lists. (thanks to David Lichteblau)
5444 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5445 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5446 (thanks to Gerd Moellmann)
5447 * fixed bug 246: increased compilation speed of long
5448 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5450 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5452 * DEFCONSTANT now throws a condition of type
5453 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5454 constant to a non-EQL value; CONTINUE and ABORT restarts
5455 respectively change and preserve the value.
5456 * fixed bug 63: The code walker, part of the implementation of CLOS,
5457 is now better at handling symbol macros.
5458 * bug fix: There is no longer an internal implementation type named
5459 CL:LENGTH. (reported by Raymond Toy)
5460 * bug fix: In macro-like defining macros/special operators the
5461 implicit block does not enclose the lambda list.
5462 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5463 enclosed in parentheses) are not suitable as type specifiers, and
5464 their use properly signals an error now.
5465 * bug fix: An argument count mismatch for a type specifier in code
5466 being compiled no longer causes an unhandled error at compile
5467 time, but signals a compile-time warning.
5468 * fixed simple vector readable printing
5469 * bug fix: DESCRIBE takes more care over whether the class
5470 precedence list slot of a class is bound before accessing it.
5471 (reported by Markus Krummenacker)
5472 * bug fix: FORMATTER can successfully compile pretty-printer format
5473 strings which use variants of the ~* directive inside.
5474 * bug fix: SEARCH now applies its TEST predicate to the elements of
5475 the arguments in the correct order. (thanks to Wolfhard Buss)
5476 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5477 in type inference. (thanks to Robert E. Brown)
5478 * bug fix: Reading in symbols with an explicit package name of ""
5479 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5480 * fixed some bugs revealed by Paul Dietz' test suite:
5481 ** NIL is now allowed as a structure slot name.
5482 ** Arbitrary numbers, not just REALs, are allowed in certain
5483 circumstances in LOOP for-as-arithmetic clauses.
5484 ** Multiple class redefinitions before slot access no longer
5485 causes a type error.
5486 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5487 association between the name and a class.
5488 ** Generic functions with non-standard method-combination and over
5489 five methods all of which return constants no longer return NIL
5490 after the first few invocations. (thanks to Gerd Moellmann)
5491 ** CALL-NEXT-METHOD with no arguments now passes the original
5492 values of the arguments, even in the presence of assignment.
5493 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5495 ** DISASSEMBLE works with closures and funcallable instances.
5496 ** ADD-METHOD now returns the generic function, not the new method.
5497 ** FIND-METHOD signals an error if the lengths of the specializers
5498 is incompatible with the generic function, even if the ERRORP
5500 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5501 which its argument is a member.
5502 ** DEFCLASS only redefines the class named by its class-name
5503 argument if that name is the proper name of the class;
5504 otherwise, it creates a new class.
5505 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5506 of the UNBOUND-SLOT condition to the name of the slot.
5507 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5508 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5509 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5510 SLOT-MAKUNBOUND in the specified fashion.
5512 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5513 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5514 cross-compilation host. As a consequence, we can now bootstrap our
5515 way up to SBCL starting with a bare gcc toolchain and human-readable
5516 source code (first the source to CLISP, then the source to SBCL).
5517 * A contributed module containing a partial implementation of the
5518 simple-streams interface has been included. (thanks to Rudi
5520 * A contributed module implementing the RFC1321 Message Digest
5521 Algorithm, known as MD5, has been included.
5522 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5523 no longer has any effect, as the code controlled by this feature
5524 has been deleted. (As far as we know, no-one has ever built using
5525 this feature, and its semantics were confused in any case).
5526 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5527 work on conditions (as required by the ANSI specification),
5528 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5529 expected behaviour on conditions. Users should note, however,
5530 that such behaviour is not required by the ANSI specification,
5531 and so use of this behaviour may render their code unportable.
5532 * fixed some bugs revealed by Paul Dietz' test suite:
5533 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5535 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5536 ** SXHASH on condition objects no longer returns NIL.
5537 ** :ALLOCATION :CLASS slots are better treated; their values are
5538 updated on class redefinition, and initforms inherited from
5539 superclasses are applied.
5540 ** REMOVE-METHOD returns its generic function argument even when
5541 no method was removed.
5542 ** SHARED-INITIALIZE now initializes the values of the requested
5543 slots, including those with :ALLOCATION :CLASS.
5544 ** ALLOCATE-INSTANCE now works on structure classes defined via
5545 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5547 ** SLOT-EXISTS-P now works on conditions, as well as structures
5549 ** MAKE-LOAD-FORM now has the required methods on
5550 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5551 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5552 keyword, and now implements the SLOT-NAMES argument.
5553 ** methods with &OPTIONAL arguments no longer allow too many
5554 arguments to be passed in the call without error.
5555 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5556 option is consistent with the required arguments of the generic
5557 function lambda list.
5558 * bug fix: REQUIRE accepts a string designator. (Thanks to
5560 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5561 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5562 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5563 * bug fix: The compiler now checks for duplicated variables in macro
5565 * bug fix: SETQ on globals returns the correct value.
5566 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5567 not a COMPILER-ERROR (followed by some other strange error on
5568 choosing the CONTINUE restart).
5569 * bug fix: make.sh and friends are now more consistent in the way that
5570 they look for GNU "make".
5572 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5573 * experimental native threads support (on x86 Linux >=2.4 only).
5574 This is not compiled in by default: you need to add :SB-THREAD to
5575 the target features. See the "Beyond ANSI" chapter of the manual
5577 * fix for longstanding nonANSIism: The old distinction between
5578 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5579 The return value from CL:FIND-CLASS is now a CLOS class, and
5580 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5581 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5582 * An interface to the MetaObject Protocol, as described in Kiczales,
5583 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5584 MIT Press, 1991, is available from the SB-MOP package.
5585 * incompatible change: the SB-PCL package should now be considered
5586 a private implementation detail, and no longer a semi-private MOP
5588 * minor incompatible change: due to rearrangement for threads, the
5589 control stack and binding stack are now allocated at arbitrary
5590 addresses instead of being hardcoded per-port. Users affected by
5591 this probably have to be doing advanced things with shared
5592 libraries, and will know who they are.
5593 * minor incompatible change: Previously, all --eval forms used were
5594 processed with READ before any of them were processed with EVAL.
5595 Now each --eval form is processed with both READ and EVAL before
5596 the next --eval form is processed. (Thus package operations like
5597 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5598 work as the user might reasonably expect.)
5599 * minor incompatible change: *STANDARD-INPUT* is now only an
5600 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5602 * minor incompatible change: Y-OR-N-P is now character-oriented,
5603 not line oriented. Also, YES-OR-NO-P now works without errors.
5604 (thanks to Antonio Martinez)
5605 * sb-aclrepl module improvements: an integrated inspector, added
5606 repl features, and a bug fix to :trace command.
5607 * Known functions, which cannot be open coded by the backend, are
5608 considered to be able to check types of their arguments. (fixing
5609 a bug report by Nathan J. Froyd)
5610 * fixed a bug in computing method discriminating functions: It is
5611 now possible to define methods specialized on classes which have
5612 forward-referenced superclasses. (thanks to Gerd Moellmann)
5613 * fixed evaluation order in optional entries (reported by Gilbert
5615 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5616 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5617 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5618 required-by-AMOP NAME argument, as well as CLASS and
5619 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5620 * fixed bug 20: DEFMETHOD can define methods using names that are
5621 not the proper names of classes to designate class specializers.
5622 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5623 Unix file descriptors, instead of blowing up. (thanks to Antonio
5625 * Garbage collection refactoring: user-visible change is that a
5626 call to the GC function during WITHOUT-GCING will not do garbage
5627 collection until the end of the WITHOUT-GCING. If you were doing
5628 this you were probably losing anyway.
5629 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5630 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5631 TYPEP the latter but not the former.
5632 * The compiler issues a full WARNING for calls to undefined functions
5633 with names from the CL package.
5634 * MAP-INTO for a vector destination is open coded. (reported by
5635 Brian Downing on c.l.l)
5636 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5637 documentation string.
5638 * fixed some bugs revealed by Paul Dietz' test suite:
5639 ** COPY-ALIST now signals an error if its argument is a dotted
5641 ** Condition slots are now accessed more correctly in the presence
5642 of multiple initargs for a given slot.
5643 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5644 exclude restarts of the same name associated with a different
5646 ** DEFCLASS of forward-referenced classes with another
5647 forward-referenced class in the superclasses list no longer
5649 ** Condition slots are now initialized once each, not multiple
5650 times. (thanks to Gerd Moellmann)
5651 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5653 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5654 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5655 arguments contain duplicated elements.
5656 ** RESTART-CASE understands local macros.
5657 ** RESTART-CASE associates exactly its own restarts with a condition.
5658 ** ENDP in safe mode checks its argument to be of type LIST.
5659 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5660 in question is unbound.
5661 ** Optimized MAKE-INSTANCE functions no longer cause internal
5662 assertion failures in the presence of duplicate initargs.
5663 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5664 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5665 propagated even in the ctor optimized implementation of
5667 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5669 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5670 * a better implementation of SXHASH on (simple) bit vectors,
5671 measured both in execution speed and in distribution of results
5672 over the positive fixnums, has been installed. Likewise, a better
5673 implementation of EQUAL for simple bit vectors is now available.
5674 * fixed CEILING optimization for a divisor of form 2^k.
5675 * fixed bug 240 (emitting extra style warnings "using the lexical
5676 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5677 by Antonio Martinez)
5678 * fixed SXHASH, giving different results for NIL depending on type
5679 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5680 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5681 variable. (found by Rolf Wester)
5682 * SBCL does not ignore type declarations for special
5683 variables. (reported by rif on c.l.l 2003-03-05)
5684 * some bug fixes in contrib/sb-aclrepl/
5685 * fixed some bugs revealed by Paul Dietz' test suite:
5686 ** a bug in the CONS type specifier, whereby the CAR and CDR
5687 types got intertwined, has been fixed;
5688 ** the type system is now able to reason about the interaction
5689 between INTEGER and RATIO types more completely;
5690 ** APPEND, [N]REVERSE and NRECONC check that those their
5691 arguments, which must be proper lists, are really so;
5692 ** An array specialized to be unable to hold elements has been
5693 implemented, as required -- yes, really -- by ANSI;
5694 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5695 on malformed property lists;
5697 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5698 * incompatible packaging change: in line with Unix convention,
5699 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5700 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5701 * REQUIRE and PROVIDE are now optionally capable of doing something
5702 useful. See the documentation string for REQUIRE.
5703 * infrastructure for a managed SBCL contrib system: contributed
5704 modules in this release include:
5705 ** the ASDF system definition facility;
5706 ** an interface to the BSD Sockets API;
5707 ** an ACL-like convenience interface to the repl;
5708 (thanks to Kevin Rosenberg)
5709 ** an implementation of ROTATE-BYTE, with efficient implementation
5711 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5712 gives a closer approximation to the right answer than previously.
5713 (thanks to Raymond Toy)
5714 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5715 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5716 optional environment arguments, as required by ANSI.
5717 * fixed bugs in other functions taking environment objects, allowing
5718 calls with an explicit NIL environment argument to be compiled
5720 * fixed bug 228: primary return values from
5721 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5722 COMPILE or FUNCTION.
5723 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5724 :TYPE will no longer signal errors on innocuous objects.
5725 * fixed bug 231b: SETQ is better at respecting type declarations in
5726 the lexical environment.
5727 * fixed a bug in DEFCLASS: classes named by symbols with no or
5728 unprintable packages can now be defined.
5729 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5730 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5731 * fixed compiler failure related to checking types of functions.
5732 (reported by Robert E. Brown)
5733 * the compiler is now much more consistent in its error-checking
5734 treatment of bounding index arguments to sequence functions: in
5735 (SAFETY 3) code, errors will be signalled in almost all cases if
5736 invalid sequence bounding indices are passed to functions defined
5737 by ANSI to operate on sequences.
5738 * fixed a bug in the build procedure: documentation of SBCL-specific
5739 packages is now preserved and available in the final Lisp image.
5740 * lifted FDEFINITION lookup out of loops in the implementation of
5741 many list operations. (thanks to Robert E. Brown)
5742 * fixed a bug in the reader: the #n# reader macro now works for
5743 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5744 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5745 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5746 E. Brown and Tony Martinez respectively)
5747 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5748 SLOT-BOUNDP: in particular, it is now able to optimize them much
5749 better, and is now not vulnerable to having packages renamed.
5750 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5751 always called when a slot is not present in an instance. (thanks
5753 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5754 longer signal an error on unreading a character following EOF on
5755 the previous constituent stream. (thanks to Tony Martinez)
5756 * fixed some bugs revealed by Paul Dietz' test suite:
5757 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5758 not just nonnegative fixnums;
5759 ** the logical bit-array operators such as BIT-AND now accept an
5760 explicit NIL for their "opt-arg" argument (to indicate a
5761 freshly-consed result bit-array);
5762 ** ELT now signals an error on an invalid sequence index in safe
5764 ** the type system is now cleverer about negations of numeric
5765 types, and consequently understands the BIGNUM and RATIO types
5767 ** the type system is now cleverer about the interaction between
5768 INTEGER and RATIO types: while bugs still remain, many more
5769 cases are accurately computed;
5770 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5771 if it is in the last clause;
5772 ** CONSTANTLY now correctly returns a side-effect-free function in
5774 ** DECLARE is no longer treated as a special-operator; in
5775 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5776 * incremented fasl file version number due to the change in the
5777 DEFSTRUCT-SLOT-DESCRIPTION structure.
5779 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5780 * minor incompatible change: code processed by the "interpreter" or
5781 EVAL now has a compilation optimization policy of (DEBUG 2)
5782 (changed from (DEBUG 1)) to improve debuggability of interactive
5783 development, and to allow the use of the debug RETURN command in
5785 * an experimental implementation of the RETURN command for the
5786 debugger has been included. (thanks to Frederik Kuivinen)
5787 * fixed bug 62: constraints were not propagated into a loop.
5788 * fixed bug in embedded calls of SORT (reported and investigated by
5790 * fixed some bugs revealed by Paul Dietz' test suite:
5791 ** printing and reading of arrays with some dimensions having
5792 length 0 (thanks to Gerd Moellmann);
5793 ** BOA constructor with &AUX argument without a default value does
5794 not cause a type error;
5795 ** CONSTANTP now returns true for all self-evaluating objects.
5797 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5798 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5799 accessors that are related by inheritance, as specified in the
5800 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5801 Valtteri Vuorikoski)
5802 * The compiler is now able to inline functions that were defined in
5803 a complex lexical environment (e.g. inside a MACROLET).
5804 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5806 * Support for the upcoming FreeBSD-5.0 release has been included.
5807 (thanks to Dag-Erling Smorgrav)
5808 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5809 effect when it is not in a toplevel context.
5810 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5811 stand a better chance of being correct. (thanks to Gerd
5813 * fixed bug in COERCE, which now signals an error on coercing a
5814 rational to a bounded real type which excludes the expected
5816 * The compiler is now able to derive types more accurately from the
5817 COERCE and COMPILE functions.
5818 * fixed bug 223: functional binding is considered to be constant
5819 only for symbols in the CL package.
5820 * fixed bug 231: SETQ did not check the type of a variable being set
5821 (reported by Robert E. Brown)
5822 * A new optimization for MAKE-INSTANCE has been included, fixing
5823 various bugs (including relating to :ALLOCATION :CLASS slots and
5824 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5826 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5827 ** As required by ANSI, LOOP now disallows anonymous collection
5828 clauses such as COLLECT I in conjunction with aggregate boolean
5829 clauses such as THEREIS (= I 1);
5830 ** LOOP now signals an error when any variable is reused in the
5831 same loop (including the potentially useful construct analogous
5832 to WITH A = 1 WITH A = (1+ A);
5833 ** IT is only a special loop symbol within the first clause of a
5834 conditional loop clause;
5835 ** LOOP with a typed iteration variable over a hashtable now
5836 signals a type error iff it should.
5837 * fixed some other bugs revealed by Paul Dietz' test suite:
5838 ** FILE-STREAM now names the class previously known as FD-STREAM;
5839 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5840 argument) no longer signals an error;
5841 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5842 of the slot symbol, rather than using the current package
5843 ((:CONC-NAME "") continues to intern the slot's name in the
5845 * incremented fasl file version number, because of the incompatible
5846 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5847 of the new implementation of DEFINE-COMPILER-MACRO.
5849 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5850 * Support for building SBCL for MIPS platforms running in
5851 little-endian mode has now been checked in, and basic
5852 functionality on said platforms verified.
5853 * minor incompatible change: PCL now records the pathname of a file
5854 in which methods and the like are defined, rather than its
5856 * minor incompatible change: TRUENAME now considers the truename of
5857 a file naming a directory to be the pathname with :DIRECTORY
5858 component indicating that directory.
5859 * minor incompatible change: a NAMED clause in the extended form of
5860 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5861 reason for the previous behaviour is unclear.
5862 * more systematization and improvement of CLOS and MOP conformance
5863 in PCL (thanks to Gerd Moellman and Pierre Mai):
5864 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5866 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5867 primary methods with no specializers;
5868 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5870 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5871 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5872 FORWARD-REFERENCED-CLASSes; error reporting on
5873 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5875 ** SXHASH on CLOS instances now uses a slot internal to the
5876 instance to return different numbers on distinct instances,
5877 while preserving the same return value through invocations of
5879 ** DEFMETHOD signals errors when methods with longer incongruent
5880 lambda lists are added to generic functions;
5881 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5882 CLASS, as specified in AMOP;
5883 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5884 on the order returned by the primary method for classes of
5885 class STANDARD-CLASS;
5886 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5887 * fixed some bugs shown by Paul Dietz' test suite:
5888 ** DOLIST puts its body in TAGBODY;
5889 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5891 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5892 value producing form;
5893 ** if more variables are given to PROGV than values, extra
5894 variables are bound and made to have no value;
5895 ** NSUBSTITUTE on list arguments gets the right answer with
5897 ** ELT signals an error of type TYPE-ERROR when the index argument
5898 is not a valid sequence index;
5899 ** LOOP signals (at macroexpansion time) an error of type
5900 PROGRAM-ERROR when duplicate variable names are found;
5901 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5902 ** FUNCALL of special-operators now cause an error of type
5904 ** PSETQ now works as required in the presence of side-effecting
5905 symbol-macro places;
5906 ** NCONC accepts any object as its last argument;
5907 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5909 ** loop-for-as-package does not require a package to be explicitely
5911 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5913 * fixed bug 166: compiler preserves "there is a way to go"
5914 invariant when deleting code.
5915 * fixed bug 172: macro lambda lists with required arguments after
5916 &REST arguments now cause an error to be signalled. (thanks to
5918 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5919 bug. (thanks to Matthew Danish)
5920 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5922 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5923 arguments are lexically rebound. (thanks to Gerd Moellmann and
5925 * fixed bug 194: error messages are now more informative when there
5926 is no primary method applicable in a call to a generic
5927 function. (thanks to Gerd Moellmann)
5928 * fixed bug in command line argument checking (thanks to Julian
5930 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5931 (thanks to Matthew Danish)
5932 * incremented fasl file version number, because of the
5933 SXHASH-related changes in the layout of CLOS data structures
5935 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5936 * minor incompatible change: The runtime (the Unix executable named
5937 "sbcl") is now much pickier about the .core files it will load.
5938 Essentially it now requires .core files to descend from the same
5939 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5940 as the runtime does. (The intent is to prevent the crashes which
5941 can occur, and which can even be reported as mysterious failures,
5942 when people patch the sources or change the build parameters
5943 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5944 sbcl and .core files.)
5945 * fixed bug: VALUES-LIST is no longer optimized away.
5946 * fixed bug 142: The FFI conversion of C string values to Lisp
5947 string values no longer conses excessively. (thanks to Nathan
5948 Froyd porting Raymond Toy's fix to CMU CL)
5949 * began to systematize and improve MOP conformance in PCL (thanks to
5950 Nathan Froyd, Gerd Moellman and Pierre Mai):
5951 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5953 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5954 ** FINALIZE-INHERITANCE is now called on class finalization;
5955 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5956 argument precedence order.
5957 * fixed bug 202: The compiler no longer fails on functions whose
5958 derived types contradict their declared type.
5959 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5960 so it can be non-toplevel.
5961 * The fasl file version number has changed (because of the new
5962 implementation of DEFMACRO).
5963 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5964 safe code, that any length requirement by their type-specifier
5965 argument is valid. The exceptions to this are described in bug
5967 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5968 functions now check the types of their inputs as required by ANSI.
5969 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5970 introduced symbol is DECLAREd to be SPECIAL.
5971 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5972 * fixed bug: :COUNT argument to sequence functions may be negative
5973 * fixed bug: body of DO-SYMBOLS may contain declarations
5974 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5975 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5976 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5977 symbol macro only once
5978 * fixed printing of call frame when argument list is unavailable
5979 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5980 * compiler no longer signals WARNING on unknown keyword
5983 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5984 * A beta-quality port to the mips architecture running Linux,
5985 based on the old CMUCL backend, has been made. It has been tested
5986 on a big-endian kernel, and works sufficiently well to be able to
5987 rebuild itself; it has not been tested in little-endian mode.
5988 * fixed an inconsistency between gencgc.c and purify.c which made
5989 dumping/loading .core files unreliable
5990 * fixed bug 120a: The compiler now deals correctly with IFs where
5991 the consequent is the same as the alternative, instead of
5992 misderiving the return type. (thanks to Alexey Dejneka)
5993 * fixed bug 113: Logical pathnames are now dumpable (the logical
5994 host is resolved at load-time, throwing an error if it is not
5996 * fixed bug 174: FORMAT's error message is slightly clearer when a
5997 non-printing character is used in a format directive.
5998 * fixed several bugs in compiler checking of type declarations, i.e.
5999 violations of the Python "declarations are assertions" principle
6000 (thanks to Alexey Dejneka)
6001 * fixed several bugs in PCL's error checking (thanks to Gerd
6003 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6005 * fixed bug in compilation of functions as first class values
6006 (thanks to Antonio Martinez-Shotton)
6007 * The compiler's handling TYPE-ERRORs which it can prove will
6008 inevitably happen at runtime has been cleaned up and corrected
6009 in several ways. (thanks to Alexey Dejneka)
6010 * improved argument type checking for various basic arithmetic
6011 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6012 lavished on them in the past that they can be compiled in many
6013 ways in different special cases
6014 * fixed bug 181: compiler checks validity of user supplied type
6016 * cleaned up code flushing in optimization: Function calls which
6017 should signal errors for safety purposes (e.g. which ANSI says
6018 should signal errors when their arguments are of incorrect type)
6019 are no longer optimized away.
6020 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6021 * incremented fasl file version number, because changes in the
6022 implementation of sequence functions like COERCE caused
6023 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6024 in old inline expansions) to become undefined. (Actually these
6025 changes were later undone, so we might very well be binary
6026 compatible with 0.7.7 after all, but leaving the version number
6027 incremented seemed like the simplest and most conservative
6030 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6031 * An alpha-quality port to the parisc architecture running Linux,
6032 based on the old CMUCL backend, has been made. This, even more so
6033 than the other backends, should be considered still a work in
6034 progress; known problems include that the Linux kernel in 64-bit
6035 mode does not propagate the correct sigcontext structure to
6036 userspace, and consequently SBCL on a parisc64 kernel will not
6038 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6039 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6040 suppressed.) Also now that the compiler is looking at declarations
6041 in the environment, it checks optimization declarations as well,
6042 and suppresses inlining when (> DEBUG SPEED).
6043 * More fixes have been made to treatment of floating point exception
6044 treatment and other Unix signals. In particular, floating point
6045 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6046 * The detection and handling of control stack exhaustion (infinite
6047 or very deeply nested recursion) has changed. Stack exhaustion
6048 detection is now done by write-protecting pages at the OS level
6049 and applies at all optimization settings; when found, a
6050 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6051 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6052 be caught using IGNORE-ERRORS.
6053 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6054 correctly when transforming recursive LABELS functions to LETs.
6055 (thanks to Alexey Dejneka)
6056 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6057 that are names of constants or global variables.
6058 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6059 alien routines with docstrings.
6060 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6061 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6063 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6064 (thanks to Eric Marsden)
6065 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6066 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6067 * Bug fix: The SPARC backend can now compile functions involving
6068 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6069 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6070 to a functions expecting a PATHNAME-DESIGNATOR.
6071 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6072 lambda lists. (thanks to Alexey Dejneka)
6073 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6074 functions so that EXPORTing the name of the class doesn't cause
6075 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6076 to Antonio Martinez for reporting this)
6077 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6078 constant-folded without failing an assertion. (thanks to Einar
6079 Floystad Dorum for reporting this)
6080 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6081 types are now dealt with more correctly by the compiler.
6082 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6083 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6084 behaviour analogous to RENAME-FILE. This puts its behaviour more
6085 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6087 * The fasl file version number has changed again. (because of the
6088 bug fix involving the names of PCL MAKE-INSTANCE functions)
6090 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6091 * bug fix: Floating point exceptions are treated much more
6092 consistently on the x86/Linux and PPC/Linux platforms.
6093 * Array initialization with :INITIAL-ELEMENT is now much faster for
6094 cases when the compiler cannot open code the array creation, but
6095 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6096 array accesses have also seen a speed increase.
6097 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6098 specified. (This was at the root of some bad interactions between
6099 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6101 * bug fix: Internal error arguments for undefined functions are now
6102 computed correctly on the PPC/Linux platform.
6103 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6104 Raymond Toy's patch for CMU CL)
6105 * Support for the Solaris 9 operating environment has been included
6106 (thanks to Daniel Merritt)
6107 * A very ugly but hopefully complete draft of the missing FFI chapter
6108 of the manual has been created by reformatting the corresponding
6109 CMU CL manual chapter into (currently very ugly and incoherent)
6110 DocBook and bringing it up to date for SBCL behavior. Thus, the
6111 manual is now essentially complete, at least by my extreme
6112 once-and-only-once standards, whereby it's acceptable to refer to
6113 the doc strings of SB-EXT functions as the primary documentation.
6114 * The fasl file version number has changed again, due to cleanup of
6115 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6116 is no longer a static symbol.)
6118 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6119 * SBCL now builds with OpenMCL (version 0.12) as the
6120 cross-compilation host; also, more progress has been made toward
6121 bootstrapping under CLISP.
6122 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6124 * bug 158 fixed: The compiler can now deal with integer loop
6125 increments different from 1; fixing this turned out also to fix
6127 * bug 169 fixed: no more bogus warnings about using lexical bindings
6128 despite the presence of perfectly good SPECIAL declarations (thanks
6129 to David Lichteblau)
6130 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6131 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6132 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6134 * bug 180 fixed: Method combination specifications no longer ignore
6135 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6136 * bug fix: Structure type predicate functions now check their argument
6137 count as they should.
6138 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6139 correctly. (thanks to Pierre Mai)
6140 * minor incompatible change: The --noprogrammer option is deprecated
6141 in favor of the new --disable-debugger option, which is very similar.
6142 (The major difference is that it takes effect at a slightly different
6143 time at startup, causing handling of errors in --sysinit and
6144 --userinit files will be affected differently.) The
6145 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6146 been added to allow this functionality to be controlled from ordinary
6147 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6148 maintainers, who might want to run non-interactive scripts to
6149 build SBCL cores which will later be used interactively.)
6150 * minor incompatible change: The LOAD function no longer, when given
6151 a wild pathname to load, loads all files matching that pathname.
6152 Instead, an error of type FILE-ERROR is signalled.
6154 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6155 * bug 147 fixed: The compiler preserves its block link/count
6156 invariants more correctly now so that it doesn't crash. (thanks
6158 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6160 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6161 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6162 no-value-for-this-character as NIL (as specified by ANSI).
6163 * HOST-NAMESTRING on physical pathnames now returns a string that is
6164 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6165 (thanks to Christophe Rhodes)
6166 * The Alpha port handles icache flushing more correctly. (thanks to
6168 * More progress has been made toward bootstrapping under CLISP. (thanks
6169 to Christophe Rhodes)
6170 * The fasl file format has changed again, because dynamic loading
6171 on OpenBSD (which has non-ELF object files) motivated some cleanups
6172 in the way that foreign symbols are transformed and passed around.
6173 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6174 is no longer treated as whitespace by the reader, but instead as
6175 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6176 |A
\x7fB|, instead of A as it used to.
6178 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6179 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6180 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6181 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6182 this as of 0.7.1.45, but was left out of the previous news section
6183 (thanks to Dan Barlow)
6184 * SBCL now runs on the Solaris operating system on SPARC architectures
6185 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6186 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6187 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6188 * SPARC backend cleanups, allowing builds of cores optimized for V8
6189 and V9 SPARCS, and also emission of code targeted to a particular
6190 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6192 * SBCL is closer to bootstrapping under CLISP, thanks to various
6193 fixes by Christophe Rhodes.
6194 * The fasl file format has changed again, to allow the compiler's
6195 INFO database to support symbol macros.
6196 * The user manual (in doc/) is formatted into HTML more nicely.
6197 (thanks to coreythomas)
6198 * The system is smarter about SUBTYPEP relationships, especially
6199 those involving NOT types (including types such as ATOM which are
6200 represented internally using NOT types). Thus SUBTYPEP is less
6201 likely to return (VALUES NIL NIL) in general, and in particular
6202 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6204 * The fasl file format has changed again, because the internal
6205 representation of types now includes a new slot to support the new
6206 SUBTYPEP-of-NOT-types logic.
6207 * (not a change in the main branch of SBCL, but a related prototype
6208 which can hopefully be merged into the main branch of SBCL in the
6209 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6210 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6211 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6212 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6213 dispatch macro character combinations. (thanks to Alexey Dejneka)
6214 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6215 that superficially look like logical namestrings correctly.
6216 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6218 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6219 default supplied-p) for &optional and &key arguments. (thanks to
6222 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6223 * incompatible change: The compiler is now less aggressive about
6224 tail call optimization, doing it only when (> SPACE DEBUG) or
6225 (> SPEED DEBUG). (This is an incompatible change because there are
6226 programs which relied on the old CMU-CL-style behavior to optimize
6227 away their unbounded recursion which will now die of stack overflow.)
6228 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6229 for non-GENCGC systems has been increased to 20M (since that
6230 seems much closer to the likely performance optimum for modern
6231 systems than the old 4M value was)
6232 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6233 and *DEBUG-PRINT-LEVEL*
6234 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6235 of CMU CL's support for SPARC, and various endianness and other
6236 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6237 * new syntactic sugar for the Unix command line: --load foo.bar is now
6238 an alternate notation for --eval '(load "foo.bar")'.
6240 ** The system now detects stack overflow and handles it gracefully,
6241 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6242 optimization settings. (This is a good thing in general, and
6243 its introduction in this version should be particularly timely
6244 for anyone whose code fails because of suppression of tail
6246 ** The system now hunts for the C variable "environ" in a more
6247 devious way, to avoid segfaults when the C library version differs
6248 between compile time and run time. (thanks to Christophe Rhodes)
6249 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6250 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6251 ** The compiler no longer issues bogus style warnings for undefined
6252 classes in the same source file as the DEFCLASSes which defined
6253 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6255 ** fixes in CONDITION class precedence list for undefined function
6256 errors (thanks to Alexei Dejneka)
6257 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6258 correctly. (thanks to Dan Barlow)
6259 ** portability fixes aiming at bootstrapping under CLISP (thanks
6260 to Dave McDonald and Christophe Rhodes)
6261 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6262 ** fixes in type translation and and type inference (thanks to
6264 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6265 ** various fixes in the new ports (thanks to Dan Barlow)
6266 * several changes related to debugging:
6267 ** suppression of tail recursion, as noted above
6268 ** stack overflow detection, as noted above
6269 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6270 is now the default. (For some time encapsulation has been more
6271 reliable than the breakpoint-based :ENCAPSULATE NIL
6272 implementation, at least on X86 systems; and I just noticed that
6273 encapsulation also seems closer to the spirit of the ANSI
6276 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6278 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6279 up properly again. (There was a packaging bug in 0.7.0 which
6280 left their definitions in SB-SYS::LOAD-FOREIGN and
6281 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6282 vital for most things which interface to C-level interfaces,
6283 like extensions working with sockets or databases or
6284 Perl-compatible regexes or whatever, and the need to fix
6285 this bug is the main reason that 0.7.1 was released so
6287 ** DEFGENERIC is now choosier about the methods it redefines, so that
6288 reLOADing a previously-LOADed file containing DEFGENERICs does
6289 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6290 cycle now works as it should. (thanks to Alexey Dejneka)
6291 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6292 fixed by Christophe Rhodes. (He actually submitted this patch
6293 months ago, and I delayed until after 0.7.0.)
6294 ** Bug 111 (internal compiler confusion about runtime checks on
6295 FUNCTION types) was fixed by Alexey Dejneka.
6296 * Some internal cleanups (getting rid of variables which aren't
6297 needed now that the byte interpreter is gone) caused the fasl
6298 file format number to change again.
6300 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6301 * major incompatible change: The default fasl file extension, i.e. the
6302 default extension for files produced by COMPILE-FILE, has changed
6303 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6305 ** There are many changes in the implementation of the compiler.
6306 SBCL is now essentially a compiler-only implementation of ANSI
6307 Common Lisp. EVAL still "interprets" a few special cases, but
6308 almost all the interesting cases are handled by creating
6309 a LAMBDA expression, calling COMPILE on it, then calling
6310 FUNCALL on the result.
6311 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6312 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6313 Since the code is newer, there might still be some new bugs
6314 (though not as many as before Martin Atzmueller's fixes:-). But
6315 the new code is substantially simpler and clearer, and hopefully
6316 any remaining bugs will be simpler, less fundamental, and more
6317 fixable then the bugs in the old code.
6318 ** The revised compiler is still a little unsteady on its feet.
6320 *** The debugging information it produces (particularly the names
6321 of FUNCTION objects) is sometimes much less useful than what
6322 the old compiler produced.
6323 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6324 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6325 within a MACROLET) has been temporarily weakened.
6326 ** There are new compiler optimizations for various functions:
6327 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6328 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6329 *** the math functions TRUNCATE, FLOOR, and CEILING
6330 *** the function-of-all-trades COERCE
6331 Mostly these should be transparent, but there's one
6332 potentially-annoying problem (bug 117): when the compiler
6333 inline-expands a function and does type analysis on the result,
6334 it can create control paths which have type mismatches, and
6335 when it can't prove that those control paths aren't taken,
6336 it will issue WARNINGs about the type mismatches. This is
6337 a particular problem in practice for the new sequence functions.
6338 It's not clear how this should be fixed, and for now, a
6339 workaround is given in the entry for 117 in the BUGS file.
6340 ** (Because of the interaction between the two previous items --
6341 occasional inlining problems and new inline expansions -- some
6342 of the new sequence function optimizations won't really kick in
6343 completely until debugging information, and then inlining, are
6344 straightened out in some future version.)
6345 * minor incompatible changes:
6346 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6347 DIRECTORY no longer implicitly promotes NIL slots of its
6348 pathname argument to :WILD. In particular, when you ask for the
6349 contents of a directory (which you used to be able to do without
6350 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6351 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6352 ** changes in behavior that ANSI explicitly defines to be
6353 implementation dependent:
6354 *** The new compiler-only implementation still conforms with ANSI,
6355 but acts a little different than before. Besides the obvious
6356 changes in performance tradeoffs (that the cost per form passed
6357 to EVAL has gone up, and the cost per form executed by EVAL
6358 has gone down), the behavior of the system changes a little
6359 because there are no longer any interpreted function objects.
6360 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6361 e.g. doing COMPILE on the output of interactive DEFUN is
6363 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6365 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6366 has changed from (:CL) to NIL.
6367 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6368 e.g. #\Newline and #\Tab, don't have names specified in the
6369 ANSI Common Lisp standard, is now based on their ASCII symbolic
6370 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6371 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6372 are no longer used for output.
6373 ** changes in internal implementation constants:
6374 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6375 4 million. (If your application spends a lot of time GCing and
6376 you have a lot of RAM, you might want to experiment with
6377 increasing it even more.)
6378 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6379 However, almost all old code should still continue to work without
6380 immediate update, as SB-C-CALL is now a (deprecated) nickname
6382 ** Old operator names in the style DEF-FOO are now deprecated in
6383 favor of new corresponding names DEFINE-FOO, for consistency with
6384 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6385 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6386 internal symbols, but a few supported extensions like
6387 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6388 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6389 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6390 etc. as you get deeper into recursive calls to the debugger
6391 command loop, instead of the old "5]", "5]]", "5]]]"
6392 sequence. (I was motivated to do this when squabbles between
6393 ILISP and SBCL left me very deeply nested in the debugger. In the
6394 short term, this change will probably provoke more ILISP/SBCL
6395 squabbles, but hopefully it will be an improvement in the long run.)
6396 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6397 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6398 function, since declaiming return types involving aliens is
6399 (1) annoyingly messy to do by hand and (2) vital to efficient
6400 compilation of code which calls such functions.
6401 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6402 longer reexported by the SB-EXT package. They're solely useful
6403 for alien code, so it seems more logical that you should get
6404 them from the SB-ALIEN package, not in SB-EXT.
6405 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6406 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6407 features. Instead, the code that they used to control is always
6408 built into the system.
6409 * many other bug fixes
6410 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6411 advantage of the new EVAL-WHEN stuff and to clean them up in
6412 general, and they are now more ANSI-compliant in a number of
6413 ways. Martin Atzmueller is responsible for a lot of this.
6414 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6416 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6417 *** correct ERROR type for various file operations
6418 *** some fixes for Lisp streams
6419 *** DEFMETHOD syntax checking
6420 *** changing old weird representation of debug information as
6421 strings (which, among their other deficiencies, don't transform
6422 correctly when you rename packages, and don't change their
6423 print representation when you change things like *PACKAGE*
6424 and *PRINT-LENGTH*) to symbols and lists of symbols
6425 He also made several improvements and fixed several bugs in DESCRIBE.
6426 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6428 *** misbehavior of WRITE-STRING/WRITE-LINE
6429 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6430 and several other LOOP problems as well
6431 *** DIRECTORY when similar filenames are present
6432 *** DEFGENERIC with :METHOD options
6433 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6434 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6435 *** argument ordering in FIND with :TEST option
6436 *** mishandled package designator argument in APROPOS-LIST
6437 *** various problems in the backquote readmacro
6438 *** a bug in APROPOS
6439 *** probably some others that I'm not describing very well here,
6440 since the CVS log documents them by reference to sbcl-devel
6441 messages, and the SourceForge archives aren't working well.:-(
6442 ** Dan Barlow improved the Alpha port (and is making progress on the
6443 PPC port, for those of you who think different).
6444 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6445 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6446 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6447 continues to work on the SPARC port (for those of you in a position
6448 to look down upon our little PC-compatible boxes from a great height).
6449 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6450 and uses that copy, rather than the current dynamic value, when
6451 it's trying to decide whether to truncate output. Thus e.g.
6452 (let ((*print-lines* 50))
6453 (pprint-logical-block (stream nil)
6455 (let ((*print-lines* 8))
6456 (print (aref possiblybigthings i) stream)))))
6457 should now truncate the logical block only at 50 lines, instead of
6458 often truncating it at 8 lines, as it did before.
6459 * The doc/cmucl/ directory, containing old CMU CL documentation
6460 from the time of the fork, is no longer part of the base system.
6461 SourceForge has shut down its anonymous FTP service, and with it
6462 my original plan for distributing the old CMU CL documentation
6463 there. For now, if you need these files you can download an old
6464 SBCL source release and extract them from it.
6465 * The fasl file version number changed again, for dozens of reasons,
6466 some of which are apparent above.
6468 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6469 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6470 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6471 patch, so that DISASSEMBLE output is much nicer.
6472 * The code in the SB-PROFILE package now seems reasonably stable.
6473 I still haven't decided what the final interface should look like
6474 (I'd like PROFILE to interact cleanly with TRACE, since both
6475 facilities use function encapsulation) but if you have a need
6476 for profiling now, you can probably use it successfully with
6477 the current CMU-CL-style interface.
6478 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6479 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6480 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6481 link now returns the dangling link itself, and for similar
6482 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6483 link itself. (In these cases the old code signalled an error and
6484 looped endlessly, respectively.) Thus, DIRECTORY now works even
6485 in the presence of dangling and cyclic symbolic links.
6486 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6487 is now a supported extension again, since the consensus on
6488 sbcl-devel was that it can be useful for ordinary development
6489 work, not just for debugging SBCL itself.
6490 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6491 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6492 that currently-defined functions might be redefined later with
6493 different return types.
6494 * Hash tables can be printed readably, as inspired by CMU CL code
6495 of Eric Marsden and SBCL code of Martin Atzmueller.
6496 * better error handling in CLOS method combination, thanks to
6497 Martin Atzmueller porting Pierre Mai's CMU CL patches
6498 * more overflow fixes for >16Mbyte I/O buffers
6499 * A bug in READ has been fixed, so that now a single Ctrl-D
6500 character suffices to cause end-of-file on character streams.
6501 In particular, now you only need one Ctrl-D at the command
6502 line (not two) to exit SBCL.
6503 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6505 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6506 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6507 does the right thing.
6508 * The implementation of some type tests, especially for CONDITION
6509 types, is now tidier and maybe faster, due to CMU CL code
6510 originally by Douglas Crosher, ported by Martin Atzmueller.
6511 * Some math functions have been fixed, and there are new
6512 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6513 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6514 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6515 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6516 likely to be built into sbcl-0.7.0.)
6517 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6518 CL, ported to SBCL by Martin Atzmueller)
6519 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6520 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6521 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6522 * There's a new slam.sh hack to shorten the edit/compile/debug
6523 cycle for low-level changes to SBCL itself, and a new
6524 :SB-AFTER-XC-CORE target feature to control the generation of
6525 the after-xc.core file needed by slam.sh.
6526 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6527 COMPILE-FILE is no longer supported, so that now every function
6528 gets an entry point, so that block compilation looks a little
6529 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6530 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6531 returns the number of bytes consed since the system started,
6532 rather than the number consed since the first time the function
6533 was called. (The new definition parallels ANSI functions like
6534 CL:GET-INTERNAL-RUN-TIME.)
6535 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6536 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6537 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6538 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6539 * Fasl file version numbers are now independent of the target CPU,
6540 since historically most system changes which required version
6541 number changes have affected all CPUs equally. Similarly,
6542 the byte fasl file version is now equal to the ordinary
6545 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6546 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6547 is no longer recognized. I apologize for this, because it was
6548 listed in SB-EXT as a supported extension, but I found that
6549 its existing behavior was poorly specified, as well as incorrectly
6550 specified, and it looked like too much of a mess to straighten it
6551 out. I have enough on my hands trying to get ANSI stuff to work..
6552 * many patches ported from CMU CL by Martin Atzmueller, with
6553 half a dozen bug fixes in pretty-printing and the debugger, and
6554 half a dozen others elsewhere
6555 * fixed bug 13: Floating point infinities are now supported again.
6556 They might still be a little bit flaky, but thanks to bug reports
6557 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6558 as flaky as they were.
6559 * The --noprogrammer command line option is now supported. (Its
6560 behavior is slightly different in detail from what the old man
6561 page claimed it would do, but it's still appropriate under the
6562 same circumstances that the man page talks about.)
6563 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6564 are now supported, and enabled by default. Thus, the compiler can
6565 handle many floating point and complex operations much less
6566 inefficiently. (Thus e.g. you can implement a complex FFT
6568 * The compiler now detects type mismatches between DECLAIM FTYPE
6569 and DEFUN better, and implements CHECK-TYPE more correctly, and
6570 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6571 thanks to patches from Martin Atzmueller.
6572 * various fixes to make the cross-compiler more portable to
6573 ANSI-conforming-but-different cross-compilation hosts (notably
6574 Lispworks for Windows, following bug reports from Arthur Lemmens)
6575 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6576 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6577 fixed thanks to Pierre Mai's CMU CL patches.
6578 * fixes to keep the system from overflowing internal counters when
6579 it tries to use i/o buffers larger than 16M bytes
6580 * fixed bug 45a: Various internal functions required to support
6581 complex special functions have been merged from CMU CL sources.
6582 (When I was first setting up SBCL, I misunderstood a compile-time
6583 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6584 * improved support for type intersection and union, fixing bug 12
6585 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6586 more obscure bugs as well
6587 * some steps toward byte-compiling non-performance-critical
6588 parts of the system, courtesy of patches from Martin Atzmueller
6589 * Christophe Rhodes has made some debian packages of sbcl at
6590 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6591 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6592 stable, but are nonetheless usable. When he's ready, I'd be happy
6593 to add them to the SourceForge "File Releases" section. (And if
6594 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6595 * new fasl file format version number (because of changes in
6596 internal representation of (OR ..) types to accommodate the new
6597 support for (AND ..) types, among other things)
6599 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6600 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6602 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6604 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6605 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6606 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6607 * DESCRIBE now works on structure objects again.
6608 * Most function call argument type mismatches are now handled as
6609 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6610 know whether the function will be redefined before the call is
6611 executed. (The compiler could flag local calls with full WARNINGs,
6612 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6613 it doesn't keep track of enough information to know whether calls
6614 are local in this sense.)
6615 * Compiler output is now more verbose, with messages truncated
6616 later than before. (There should be some supported way for users
6617 to override the default verbosity, but I haven't decided how to
6618 provide it yet, so this behavior is still controlled by the internal
6619 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6620 src/compiler/ir1util.lisp.)
6621 * Fasl file format version numbers have increased again, because
6622 support for the Gray streams extension changes the layout of the
6623 system's STREAM objects.
6624 * The Gray subclassable streams extension now works, thanks to a
6625 patch from Martin Atzmueller.
6626 * The full LOAD-FOREIGN extension (not just the primitive
6627 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6628 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6629 but like most other programs, it defaults to copying the Unix
6630 environment from the original process instead of starting the
6631 new process in an empty environment.
6632 * Extensions which manipulate the Unix environment now support
6633 an :ENVIRONMENT keyword option which doesn't smash case or
6634 do other bad things. The CMU-CL-style :ENV option is retained
6635 for porting convenience.
6636 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6637 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6639 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6641 * A patch from Martin Atzmueller seems to have solved the SIGINT
6642 problem, and as far as we know, signal-handling now works cleanly.
6643 (If you find any new bugs, please report them!)
6644 * The system no longer defaults Lisp source file names to types
6645 ".l", ".cl", or ".lsp", but only to ".lisp".
6646 * The compiler no longer uses special default file extensions for
6647 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6648 seems to expect a single default extension for all compiled code,
6649 and there's no compelling reason to try to stretch the standard
6650 to allow two different extensions.) Instead, byte-compiled files
6651 default to the same extension as native-compiled files.
6652 * Fasl file format version numbers have increased again, because
6653 a rearrangement of internal implementation packages made some
6654 dumped symbols in old fasl files unreadable in new cores.
6655 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6656 many fewer weird special cases.
6657 * Bug #17 (differing COMPILE-FILE behavior between logical and
6658 physical pathnames) has been fixed, and some related misbehavior too,
6659 thanks to a patch from Martin Atzmueller.
6660 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6661 by Tim Moore, ported to SBCL by Martin Atzmueller.
6662 * Martin Atzmueller fixed several filesystem-related problems,
6663 including bug #36, in part by porting CMU CL patches, which were
6664 written in part by Paul Werkowski.
6665 * More compiler warnings in src/runtime/ are gone, thanks to
6666 more patches from Martin Atzmueller.
6667 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6670 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6672 * DESCRIBE now works on CONDITION objects.
6673 * The debugger now handles errors which arise when trying to print
6674 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6676 * The build system now uses an additional file, customize-target-features.lisp,
6677 to allow local modifications to the target *FEATURES* list. (The point of
6678 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6679 debugging features enabled, without having to worry about propagating it
6680 into everyone's system when I do a "cvs update".) When no
6681 customize-target-features.lisp file exists, the target *FEATURES* list
6682 should be constructed the same way as before.
6683 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6684 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6685 warn about behavior which is undefined under the ANSI spec. Note: This
6686 is specified by ANSI, but it's not very popular with programmers.
6687 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6688 macro in the SBCL sources for an example of a workaround which you
6689 might use to make portable ANSI-standard code which does what you want.
6690 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6691 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6692 when it's used as a non-toplevel form. (This is required in order
6693 to implement the DEFCONSTANT-EQX macro.)
6694 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6695 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6696 funny things, due to bugs in the implementation of EVAL-WHEN
6697 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6698 non-toplevel DEFCONSTANTs are uncommon.)
6699 * The core file version number and fasl file version number have been
6700 incremented, because the old noncompliant DEFCONSTANT behavior involved
6701 calling functions which no longer exist, and because I also took the
6702 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6703 * fixed bug 1 (error handling before read-eval-print loop starts), and
6704 redid debugger restarts and related debugger commands somewhat while
6706 ** The QUIT debugger command is gone, since it did something
6707 rather different than the SB-EXT:QUIT command, and since it never
6708 worked properly outside the main toplevel read/eval/print loop.
6709 Invoking the new TOPLEVEL restart provides the same functionality.
6710 ** The GO debugger command is also gone, since you can just invoke
6711 the CONTINUE restart directly instead.
6712 ** The TOP debugger command is also gone, since it's redundant with the
6713 FRAME 0 command, and since it interfered with abbreviations for the
6715 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6717 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6718 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6719 some porting work by Martin Atzmueller)
6720 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6721 with a boatload of patches which he ported to SBCL. Now that those
6723 ** The system tries to make sure that its low-priority messages
6724 are prefixed by semicolons, to help people who like to use
6725 syntax highlighting in their ILISP buffer. (This patch
6726 was originally due to Raymond Toy.)
6727 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6728 patches originally written by Raymond Toy.
6729 ** The compiler understands coercion between single-value and
6730 multiple-VALUES type expressions better, getting rid of some very
6731 weird behavior, thanks to patches originally by Robert MacLachlan
6732 and Douglas Crosher.
6733 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6734 lambda lists, thanks to a patch originally by Pierre Mai.
6735 ** The system no longer bogusly warns about "abbreviated type
6737 ** The compiler gets less confused by inlining and RETURN-FROM,
6738 thanks to some patches originally by Tim Moore.
6739 ** The system no longer hangs when dumping circular lists to fasl
6740 files, thanks to a patch originally from Douglas Crosher.
6741 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6742 undefined function error.
6743 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6744 in structure slot initforms) for now, documented workaround instead:-|
6745 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6746 * fixed bug 5: added stubs for various Gray stream functions called
6747 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6748 installed, at least appropriate type errors are generated
6749 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6750 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6751 consistently in DEFMETHOD forms.
6752 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6753 it doesn't seem to affect SBCL after all
6754 * The C runtime system now builds with better optimization and many
6755 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6757 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6759 * The system is now under CVS at SourceForge (instead of the
6760 CVS repository on my home machine).
6761 * The new signal handling code has been tweaked to treat register
6762 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6763 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6764 downstream, e.g. in debug-int.lisp, has implicit dependencies
6765 on the unsignedness of integer representation of machine words,
6766 and that caused the system to bomb out with infinite regress
6767 when trying to recover from type errors involving signed values,
6768 e.g. (BUTLAST '(1 2 3) -1).)
6769 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6770 (This was one of the bugs Peter Van Eynde reported back in July.)
6771 * The system now uses code inspired by Colin Walters' O(N)
6772 implementation of MAP (from the cmucl-imp@cons.org mailing
6773 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6774 inline the MAP operation, and there is more than one
6775 sequence argument to the MAP call (so that it can't just
6776 do ETYPECASE once and for all based on the type of the
6777 single sequence argument). (The old non-inline implementation
6778 of the general M-argument sequence-of-length-N case required
6779 O(M*N*N) time when any of the sequence arguments were LISTs.)
6780 * The QUIT :UNIX-CODE keyword argument has been renamed to
6781 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6782 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6784 * Raymond Wiker's patches to port dynamic loading from Linux to
6785 FreeBSD have been added.
6786 * The BUGS file is now more nearly up to date, thanks in large part
6787 to Martin Atzmueller's review of it.
6788 * The debugger now flushes standard output streams before it begins
6789 its output ("debugger invoked" and so forth).
6790 * The core version number and fasl file version number have both
6791 been incremented, because of incompatible changes in the layout
6793 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6794 used to not be called for a saved Lisp image.)
6795 * Martin Atzmueller's version of a patch to fix a compiler crash,
6796 as posted on sbcl-devel 13 September 2000, has been installed.
6797 * Instead of installing Martin Atzmueller's patch for the
6798 compiler transform for SUBSEQ, I deleted the compiler transform,
6799 and transforms for some similar consing operations.
6800 * A bug in signal handling which kept TRACE from working on OpenBSD
6802 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6803 away by constant folding
6804 * The system now defines its address space constants in one place
6805 (in the Lisp sources), and propagates them automatically elsewhere
6806 (through GENESIS and the sbcl.h file). Therefore, patching the
6807 address map is less unnecessarily tedious and error-prone. The
6808 Lisp names of address space constants have also been systematized.
6809 * CVS tags like dollar-Header-dollar have been removed from
6810 the sources, because they have never saved me trouble and
6811 they've been source of trouble working with patches and other
6812 diff-related operations.
6813 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6814 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6816 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6818 * The system has been ported to OpenBSD.
6819 * The system now compiles with a simple "sh make.sh" on the systems
6820 that it's supported on. I.e., now you no longer need to tweak
6821 text in the target-features.lisp-expr and symlinks in src/runtime/
6822 by hand, the make.sh takes care of it for you.
6823 * The system is no longer so grossly inefficient when compiling code
6824 involving vectors implemented as general (not simple) vectors (VECTOR T),
6825 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6826 which dares to use the various sequence functions on non-simple
6827 vectors, takes less of a performance hit.
6828 * There is now a primitive type predicate VECTOR-T-P
6829 to test for the (VECTOR T) type, so that e.g.
6830 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6831 can now be compiled with some semblance of efficiency. (The old code
6832 turned the type declaration into a full call to %TYPEP at runtime!)
6833 * AREF on (VECTOR T) is still not fast, since it's still compiled
6834 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6835 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6836 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6837 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6838 without making full calls to SUBTYPEP at runtime.
6839 (Some analogous efficiency issues for non-simple vectors specialized to
6840 element types other than T, or for non-simple multidimensional arrays,
6841 have not been addressed. They could almost certainly be handled the
6842 same way if anyone is motivated to do so.)
6843 * The changes in array handling break binary compatibility, so
6844 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6845 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6846 instead of (VALUES T T).
6847 * By following the instructions that Dan Barlow posted to sbcl-devel
6848 on 2 July 2000, I was able to enable primitive dynamic object
6849 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6850 functionality is not implemented (since it calls ld to resolve
6851 library references automatically, requiring RUN-PROGRAM for its
6852 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6853 try to resolve library references) is now supported.
6854 * The system now flushes the standard output streams when it terminates,
6855 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6856 them at several other probably-convenient times, e.g. in each pass of
6857 the toplevel read-eval-print loop, and after evaluating a form given
6858 as an "--eval" command-line option. (These changes were motivated by a
6859 discussion of stream flushing issues on cmucl-imp in August 2000.)
6860 * The source transform for TYPEP of array types no longer assumes
6861 that an array whose element type is a not-yet-defined type
6862 is implemented as an array of T, but instead punts, so that the
6863 type will be interpreted at runtime.
6864 * There is now some support for cross-compiling in make.sh: each of
6865 the phases of make.sh has its own script. (This should be transparent
6866 to people doing ordinary, non-cross-compile builds.)
6867 * Since my laptop doesn't have hundreds of megabytes of memory like
6868 my desktop machine, I became more motivated to do some items on
6869 my to-do list in order to reduce the size of the system a little:
6870 ** Arrange for various needed-only-at-cold-init things to be
6871 uninterned after cold init. To support this, those things have
6872 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6873 symbols with such names are now uninterned after cold init).
6874 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6875 fasl files for cold load.
6876 ** Remove the old compiler structure pooling code (which used to
6877 be conditional on the target feature :SB-ALLOC) completely.
6878 ** Redo the representation of some data in cold init to be more compact.
6879 (I also looked into supporting byte compiled code at bootstrap time,
6880 which would probably reduce the size of the system a lot, but that
6881 looked too complicated, so I punted for now.)
6882 * The maximum signal nesting depth in the src/runtime/ support code has
6883 been reduced from 4096 to 256. (I don't know any reason for the very
6884 large old value. If the new smaller value turns out to break something,
6885 I'll probably just bump it back up.)
6886 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6888 * Many, many bugs reported by Peter Van Eynde have been added to
6889 the BUGS list; some have even been fixed.
6890 * While enabling dynamic object file loading, I tried to make the
6891 code easier to understand, renaming various functions and variables
6892 with less ambiguous names, and changing some function calling
6893 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6894 * While trying to figure out how to do the OpenBSD port, I tried to
6895 clean up some of the code in src/runtime/. In particular, I dropped
6896 support for non-POSIX signal handling, added various comments,
6897 tweaked the code to reduce the number of compilation warnings, and
6898 renamed some files to increase consistency.
6899 * To support the new automatic configuration functionality in make.sh,
6900 the source file target-features.lisp-expr has been replaced with the
6901 source file base-target-features.lisp-expr and the machine-generated
6902 file local-target-features.lisp-expr.
6903 * fixed a stupid quoting error in make.sh so that using CMU CL
6904 "lisp -batch" as cross-compilation host works again
6906 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6908 * DESCRIBE no longer tries to call itself recursively to describe
6909 bound/fbound values, so that it no longer fails on symbols which are
6910 bound to themselves (like keywords, T, and NIL).
6911 * DESCRIBE now works on generic functions.
6912 * The printer now prints less-screwed-up representations of closures
6913 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6914 * A private symbol is used instead of the :EMPTY keyword previously
6915 used to mark empty slots in hash tables. Thus
6916 (DEFVAR *HT* (MAKE-HASH-TABLE))
6917 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6918 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6919 now does what ANSI says that it should. (You can still get
6920 similar noncompliant behavior if bang on the hash table
6921 implementation with all the symbols you get back from
6922 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6923 This breaks binary compatibility, since tests for equality to
6924 :EMPTY are wired into things like the macroexpansion of
6925 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6927 * There's now a minimal placeholder implementation for CL:STEP,
6928 as required by ANSI.
6929 * An obscure bug in the interaction of the normal compiler, the byte
6930 compiler, inlining, and structure predicates has been patched
6931 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6932 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6934 * Missing ordinary arguments in a macro call are now detected even
6935 when the macro lambda list contains &KEY or &REST.
6936 * The debugger no longer complains about encountering the top of the
6937 stack when you type "FRAME 0" to explicitly instruct it to go to
6938 the top of the stack. And it now prints the frame you request even
6939 if it's the current frame (instead of saying "You are here.").
6940 * As specified by ANSI, the system now always prints keywords
6941 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6943 * The default initial SIZE of HASH-TABLEs is now smaller.
6944 * Type information from CLOS class dispatch is now propagated
6945 into DEFMETHOD bodies, so that e.g.
6946 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6948 is now basically equivalent to
6949 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6950 (DECLARE (TYPE SINGLE-FLOAT X))
6952 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6953 operation, without having to do run-time type dispatch.
6954 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6955 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6956 * Since I don't seem to be making big file reorganizations very often
6957 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6958 is overflowing my ability to conveniently back them up), I've finally
6959 checked the system into CVS. (The CVS repository is on my home system,
6960 not at SourceForge -- putting it on SourceForge might come later.)
6961 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6962 high-level GC-NOTIFY-FOO functions send their output. (There's
6963 still very little control of where low-level verbose GC functions
6964 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6965 less than it used to -- the GC-NOTIFY-FOO functions are now under
6966 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6967 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6968 in only one place in the source code, and propagates it automatically
6969 everywhere that it's needed. Thus e.g. when I bump the version from
6970 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6971 * The C source files now include boilerplate legalese and documentation
6972 at the head of each file (just as the Lisp source files already did).
6973 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6974 to his page will be replaced with a link to his new CLiki service.
6976 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6978 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6979 * The build process now looks for GNU make under the default name "gmake",
6980 instead of "make" as it used to. If GNU make is not available as "gmake"
6981 on your system, you can change this default behavior by setting the
6982 GNUMAKE environment variable.
6983 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6984 can build without error under CMU CL.
6986 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6988 * There is now a partial SBCL user manual (with some new text and some
6989 text cribbed from the CMU CL manual).
6990 * The beginnings of a profiler have been added (starting with the
6991 CMU CL profiler and simplifying and cleaning up). Eventually the
6992 main interface should be through the TRACE macro, but for now,
6993 it's still accessed through vaguely CMU-CL-style functions and macros
6994 exported from the package SB-PROFILE.
6995 * Some problems left over from porting CMU CL to the new
6996 cross-compilation bootstrap process have been cleaned up:
6997 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6998 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6999 part when getting rid of the compiler *BACKEND* stuff.)
7000 ** The value of *NULL-TYPE* was screwed up, because it was
7001 being initialized before the type system knew the final
7002 definition of the 'NULL type. This screwed up several key
7003 optimizations in the compiler, causing inefficiency in all sorts
7004 of places. (I found it because I wanted to understand why
7005 GET-INTERNAL-RUN-TIME was consing.)
7006 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7007 PROCLAIM FTYPE information. Unfortunately this broke binary
7008 compatibility again, since now the forms output by DEFGENERIC
7009 to refer to functions which didn't exist in 0.6.3.
7010 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7011 can use the new (as of 0.6.3) transform for SOME into MAP into
7013 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7014 values to (INTEGER 0 1000000), so that the time code will no longer
7015 occasionally get blown up by Linux returning 1000000 microseconds
7016 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7017 its output conform to the ANSI spec. (Alas, this makes its output
7018 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7019 * A full call to MAP NIL with a single sequence argument no longer conses.
7020 * fixes to problems pointed out by Martin Atzmueller:
7021 * The manual page no longer talks about multiprocessing as though
7022 it were currently supported.
7023 * The ILISP support patches have been removed from the distribution,
7024 because as of version 5.10.1, ILISP now supports SBCL without us
7025 having to maintain patches.
7026 * added a modified version of Raymond Toy's recent CMU CL patch for
7027 EQUALP comparison of HASH-TABLE
7029 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7031 * The system still can't cross-compile itself with
7032 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7033 entails), but at least it can compile more of itself that way
7034 than it used to be able to, and various buglets which were uncovered
7035 by trying to cross-compile itself that way have now been fixed.
7036 * This release breaks binary compatibility again. This time
7037 at least I've incremented the FASL file format version to 2, so that the
7038 problem can be detected reliably instead of just causing weird errors.
7039 * various new style warnings:
7040 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7041 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7042 ** using the lexical binding of a variable named in the *FOO* style
7043 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7044 as specified by ANSI.
7045 * *RANDOM-STATE* is no longer automatically initialized from
7046 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7047 default behavior of the system is to repeat its behavior every time
7048 it's run. If you'd like to change this behavior, you can always
7049 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7050 old convention there was no comparably easy way to get the system to
7051 repeat its behavior every time it was run.
7052 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7053 FTYPE declarations has been removed, in favor of their ANSI
7054 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7055 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7056 the types of their sequence arguments can be determined at compile time.
7057 This is done through a new open code expansion for MAP which eliminates
7058 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7059 argument types can be determined at compile time.
7060 * The optimizer now transforms COERCE into an identity operation when it
7061 can prove that the coerced object is already of the correct type. (This
7062 can be a win for machine generated code, including the output of other
7063 optimization transforms, such as the MAP transform above.)
7064 * Credit information has been moved from source file headers into CREDITS.
7065 * Source file headers have been made more standard.
7066 * The CASE macro now compiles without complaining even when it has
7069 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7071 * (Note that the way that the PCL macroexpansions were rewritten
7072 to accommodate the change in DEFGENERIC below breaks binary
7073 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7074 not run under sbcl-0.6.2. Once we get out of alpha releases,
7075 i.e. hit release 1.0.0, we'll probably try to maintain binary
7076 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7077 and sbcl-1.4.4. Until then, however, it might be fairly common
7078 for maintenance releases to break binary compatibility.)
7079 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7081 * The reporting of unhandled signals has been changed to print some
7082 explanatory text as well as the report form. (Previously only
7083 the report form was printed.)
7084 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7085 it defines, so that the compiler no longer issues undefined function
7086 warnings for compiled-but-not-yet-loaded generic functions.
7087 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7088 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7089 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7090 section of the ANSI spec are supported.
7091 * The "" nickname for the "KEYWORD" package has been removed.
7092 The reader still handles symbol tokens which begin with a package marker
7093 as keywords, but it doesn't expose its mechanism for doing so in the
7094 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7095 * The system now issues STYLE-WARNINGs for contradictory TYPE
7096 proclamations. (Warnings for contradictory FTYPE proclamations would
7097 be nice too, but those can't be done usefully unless the type system
7098 is made smarter about FUNCTION types.)
7099 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7100 systematized, so that "*target-*.lisp is supposed to exist only on the
7101 target and imply that there's a related file which exists on the
7102 host, and *host-*.lisp is supposed to exist only on the host and imply
7103 that there's a related file which exists on the target. This involves a
7104 lot of renaming. Hopefully the acute confusion caused by the renaming
7105 will be justified by the reduction in chronic confusion..
7106 ** runtime-type.lisp -> early-target-type.lisp
7107 ** target-type.lisp -> late-target-type.lisp
7108 ** early-host-format.lisp -> early-format.lisp
7109 ** late-host-format.lisp -> late-format.lisp
7110 ** host-error.lisp -> misc-error.lisp
7111 ** early-error.lisp -> early-target-error.lisp
7112 ** late-error.lisp -> late-target-error.lisp
7113 ** host-defboot.lisp -> early-defboot.lisp
7114 ** code/misc.lisp -> code/target-misc.lisp
7115 ** code/host-misc.lisp -> code/misc.lisp
7116 ** code/numbers.lisp -> code/target-numbers.lisp
7117 ** code/early-numbers.lisp -> numbers.lisp
7118 ** early-host-type.lisp -> early-type.lisp
7119 ** late-host-type.lisp -> late-type.lisp
7120 ** host-typep.lisp -> typep.lisp
7121 ** load.lisp -> target-load.lisp
7122 ** host-load.lisp -> load.lisp
7123 ** host-disassem.lisp -> disassem.lisp
7124 ** host-insts.lisp -> insts.lisp
7125 ** byte-comp.lisp -> target-byte-comp.lisp
7126 ** host-byte-comp.lisp -> byte-comp.lisp
7127 ** host-signal.lisp -> signal.lisp
7128 ** host-defstruct.lisp -> defstruct.lisp
7129 ** late-target-type.lisp -> deftypes-for-target.lisp
7130 Furthermore, several other previously target-only files foo.lisp (e.g.
7131 hash-table.lisp and random.lisp) have been split into a target-and-host
7132 foo.lisp file and a target-only target-foo.lisp file, with their key type
7133 definitions in the target-and-host part, so that the cross-compiler will
7134 know more about target types.
7135 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7136 gone away. In their place are various *BACKEND-FOO* variables
7137 corresponding to the slots of the old structure.
7138 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7139 into the target SBCL has been fixed.
7140 * The chill.lisp system for loading cold code into a running SBCL
7142 * Support for the CMU CL "scavenger hook" extension has been removed.
7143 (It was undocumented and unused in the CMU CL sources that SBCL was
7144 derived from, and stale in sbcl-0.6.1.)
7145 * Various errors in the cross-compiler type system were detected
7146 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7147 (enabling various consistency checks). Many of them were fixed,
7148 but some hard problems remain, so the compiler is back to
7149 running without *TYPE-SYSTEM-INITIALIZED* for now.
7150 * As part of the cross-compiler type system cleanup, I implemented
7151 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7152 * I have started adding UNCROSS calls throughout the type system
7153 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7154 on cross-compiler input files will be able to go away, and various
7156 * CONSTANTP now returns true for quoted forms (as explicitly required
7159 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7161 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7162 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7163 (MAKE-LIST -1). In the longer term, it ought to become true
7164 that declarations are assertions even at SAFETY 1. For now, it's not
7165 quite true even at SAFETY 3, but it's at least more nearly true..
7166 (Note that this change seems to increases the size of the system by
7167 O(5%) and to decrease the speed of the compiler by 20% or more.)
7168 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7169 for the problem of printing dozens of lines of distracting information
7170 about low-level system machinery as part of the top stack frame
7171 on entry to the debugger when an undefined function was called.
7172 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7173 is not reset to COMMON-LISP-USER.
7174 * Compilation of stuff related to dyncount.lisp has been made conditional
7175 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7176 smaller. The various dyncount-related symbols have been moved into
7177 a new "SB-DYNCOUNT" package.
7178 * tty-inspect.lisp has been renamed to inspect.lisp.
7179 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7180 feature has gone away. (When we eventually port to other flavors of
7181 libc and/or Unix, we'll try to make the differences between flavors
7182 invisible at the user level.)
7183 * Various other *FEATURES* tags, and/or their associated conditionals,
7184 have been removed if obsolescent, or given better documentation, or
7185 sometimes given more-mnemonic names.
7187 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7189 * tidied up "make.sh" script
7190 * tidied up system directory structure
7191 * better "clean.sh" behavior
7192 * added doc/FOR-CMUCL-DEVELOPERS
7193 * many many small tweaks to output format, e.g. removing possibly-confusing
7194 trailing #\. character in DESCRIBE-INSTANCE
7195 * (EQUALP #\A 'A) no longer signals an error.
7196 * new hashing code, including EQUALP hashing
7197 * tidied up Lisp initialization and toplevel
7198 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7199 * command line argument processing
7200 * added POSIX-GETENV function to deal with Unix-ish environment variables
7201 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7202 terminating SBCL on EOF
7203 * non-verbose GC by default
7204 * There is no more "sbcl" shell script; the sbcl file is now the C
7205 runtime executable (just like CMU CL).
7206 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7208 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7209 symbol and package information as Lisp native symbol and package objects
7210 instead of strings naming symbols and strings naming packages. This way,
7211 whenever packages are renamed (as in warm init), debug information is
7212 transformed along with everything else.
7213 * tweaked the optimization policy declarations which control the building
7214 of SBCL itself. Now, among other things, the system no longer saves
7215 source location debugging information. (This helps two problems at once
7216 by reducing SBCL size and by keeping SBCL from trying to look for its
7217 sources -- which may not exist -- when reporting errors.)
7218 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7219 debugging and testing purposes
7220 * cleaned up printing, making the printer call PRINT-OBJECT for
7221 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7222 methods, giving nearly-ANSI behavior
7223 * converted almost all special variables to use *FOO* naming convention
7224 * deleted PARSE-TIME functionality, since it can be done portably
7225 * moved some files out of cold init into warm init
7226 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7228 * regularized formatting of source files
7229 * added an install.sh script
7230 * fixed ridiculous memory usage of cross-compiler by making
7231 compiler/alloc.lisp not try to do pooling unless it can hook
7232 itself into the GC of the cross-compilation host. Now the system
7233 builds nicely on my old laptop.
7234 * added :SB-ALLOC in target-features.lisp-expr
7235 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7236 was not implemented)
7237 * re-did condition handling and note reporting in the compiler. Notes
7238 are no longer handled by signalling conditions. Style warnings
7239 and warnings are handled more correctly and reported in such a way
7240 that it's easy to find one or the other in your output (so that you
7241 can e.g. figure out which of many problems caused COMPILE-FILE to
7243 * changed the severity of several compiler warnings from full WARNING
7244 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7245 compiler note reporting so that it doesn't use the condition system
7246 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7247 COMPILE-FILE command)
7248 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7249 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7250 no longer supported, since their implementation was deeply intertwingled
7251 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7252 * removed bogus "support" for compiler macros named (SETF FOO), and
7253 removed the compiler macro for SETF INFO (but only after making a fool
7254 of myself on the cmucl-imp mailing list by posting a bogus patch for
7255 DEFINE-COMPILER-MACRO..)
7256 * Compiled files containing forms which have side effects on the Lisp
7257 reader (such as DEFPACKAGE forms) are now handled more correctly.
7258 (Compiler queuing of top level lambdas has been suppressed by setting
7259 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7260 * deleted various currently-unused source files, e.g. gengc.lisp. They
7261 may be added back at some point e.g. when porting to other architectures,
7262 but until they are it's distracting to distribute them and to try to
7264 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7265 there were so many of them they're just distractions, and UNCROSS is
7266 known to be able to handle the current sources
7267 * moved PROFILE functionality into TRACE, so that it will be clear
7268 how the wrapping and unwrapping of functions when you profile them
7269 interacts with the wrapping and unwrapping of functions when you
7270 trace them. (Actually, the functionality isn't there yet, but at least
7271 the interface specification is there. Hopefully, the functionality will
7272 arrive with some future maintenance release.)
7273 * removed host-oops.lisp
7274 * changed signature of QUIT function to allow UNIX-CODE argument
7275 * fixed READ-SEQUENCE bug
7276 * tweaked verbose GC output so that it looks more like the progress
7277 output that ANSI specifies for functions like LOAD
7278 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7279 * added <http://sbcl.sourceforge.com> to the banner information printed by