1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.2.1:
3 * enhancement: support for GNU/kFreeBSD x86.
4 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
5 and DEFGLOBAL variables of type fixnum.
6 * enhancement: arithmetic constant reduction is now performed on defconstant
7 constants too. (lp#1337069).
8 * bug fix: certain ftype proclamations containing &optional t &rest t no
9 longer cause subsequent definitions to signal bogs style-warnings.
10 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
11 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
14 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
15 * enhancement: GENCGC is enabled on ARM.
16 * enhancement: better error reporting for invalid calls to local functions.
17 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
19 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
21 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
23 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
25 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
26 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
27 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
29 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
30 lp#700538, lp#613876, lp#695286, lp#798388)
31 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
32 * bug fix: array type intersection handles T and unknown element types
33 correctly. (lp#1258716)
34 * bug fix: fix a corner case in array type unparsing that would result in
35 misleading translations from our internal type representation.
36 * bug fix: array-rank now sees through union and intersection types.
38 * bug fix: when DECLARE expressions are in the wrong place, be careful not
39 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
41 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
42 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
43 instead of signaling an error. (lp#1095483)
44 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
45 used to (rarely) introduce duplicate conflict markers in a single
46 TN/block pair. (lp#1327008)
48 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
49 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
50 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
51 report of the signaled conditions lists currently running threads.
52 * enhancement: ported to ARM linux.
53 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
54 * enhancement: new contrib sb-mpfr by Stephan Frank.
55 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
56 (lp#1315846, thanks to Mark Cox)
57 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
58 function-designator to a function only as needed. (lp#1012335)
59 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
60 thanks to Thomas Hlavaty)
61 * bug fix: handle --without-xxx options to make.sh more carefully.
62 (lp#1246665, thanks to Richard M Kreuter)
63 * bug fix: prevent maybe-delete-exit from doing semantically broken things
64 with local exits. (lp#309099, lp#518099, lp#533930)
65 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
68 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
69 * optimization: COERCE is now more effecient for more cases when the type is
70 known at compile-time.
72 * bug fix: correctly inherit condition initforms. (lp#1300904)
73 * bug fix: properly pprint literal functions inside nested lists.
75 * bug fix: more-correctly handle array-type unity (broken for ages, causing
76 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
77 reported by jasom in #lisp).
79 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
80 * enhancement: printing backtraces respects
81 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
83 * optimization: defstruct out-of-line accessor are now as fast as inlined.
85 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
86 instances with a test-function (reported by Vivitron in #sbcl)
87 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
88 * bug fix: Change COND error message (lp#1254511)
89 * bug fix: LOAD is no longer confused when called on a directory.
91 * bug fix: MAKE-CONDITION reports names of missing condition classes
93 * bug fix: restore building with clang. (lp#1293643)
94 * bug fix: restore building on SPARC (broken since 1.1.15).
95 * bug fix: improved FreeBSD support.
96 * bug fix: PPC floating point conversion corrupted stack.
98 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
99 * minor incompatible change: improve read/print consistency for pathnames on
100 Win32, by using the circumflex character #\^ as the escape character.
102 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
103 * enhancement: Loading fasls with symbols from an undefined package includes
104 the name of the symbol in the error message.
105 * bug fix: problems when redefining classes and doing TYPEP on classes
106 concurrently. (lp#1272742)
107 * bug fixes to the x86-64 XCHG instruction:
108 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
110 ** it was misencoded when used to exchange EAX with itself.
111 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
112 32- and 16-bit variations as NOP.
113 * bug fix: the disassembler outputs source annotations in the right place
114 and no longer randomly drops some of them. (lp#1249205)
115 * bug fix: fix commutative-arg-swap from introducing undumpable structures
116 into code, prevent code with errors from being compiled. (lp#1276282)
117 * bug fix: pathnames with :back in their directory component are succeffully
119 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
120 wrap functions around. (lp#309086)
122 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
123 * new feature: the iterative spilling/coloring register allocator developed
124 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
125 in. By default, it only activates for functions that optimize with
126 (speed 3) and (> speed compilation-speed), but setting
127 sb-regalloc:*register-allocation-method* to :iterative forces its
128 execution. The previous behaviour can be obtained by instead setting that
129 variable to :greedy. Thanks again to Google for their support, and, more
130 crucially, to Alexandra Barchunova for her hard work.
131 * optimization: make-array with known element-type and unknown dimensions is
133 * optimization: make-array with unknown element-type is faster as well.
135 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
136 :application-type argument, which can be :console or :gui. :gui allows
137 having GUI applications without an automatically appearing console window.
138 * enhancement: reduced conservativism on GENCGC platforms:
139 conservative roots must be valid-looking tagged pointers or point
140 within a code object, not merely point to within the allocated part
141 of a page, in order to pin a page.
142 * enhancement: support for "Mac Roman" external format.
143 * enhancement: encapsulation of named generic functions now happens without
144 altering the identity of the function bound to the name.
145 * bug fix: Windows applications without the console window no longer misbehave.
146 (patch by Wilfredo Velazquez, lp#1256034).
147 * bug fix: modular arithmetic optimizations do not stumble on dead branches
148 with bad constants. (reported by Douglas Katzman)
149 * bug fix: CLISP can be used again as a cross-compilation host.
150 (Thanks to Vasily Postnicov, lp#1261451)
151 * bug fix: run-program crashed with :directory nil. (lp#1265077)
153 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
154 * optimization: complicated TYPEP tests are less opaque to the type
155 propagation pass. (lp#1229340)
156 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
157 * optimization: EQUALP on structures with raw slots (double-float/complex)
158 no longer conses and is faster.
159 * optimization: RESTART-CASE expands to more compact code.
160 Thanks to Jan Moringen. (lp#1249055)
161 * enhancement: Top-level defmethod without defgeneric no longer causes
162 undefined-function warnings in subsequent forms. (lp#503095)
163 * enhancement: Better error messages for system errors on Windows.
164 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
165 Cushing. (lp#1249183)
166 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
167 specification (multiple integer arguments) and signals a continuable error
168 if the current SBCL version is lower (older) than the specification.
170 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
171 * bug fix: EQUALP now compares correctly structures with raw slots larger
173 * bug fix: contribs couldn't be built on Windows with MinGW.
174 * bug fix: Better pathname handling on Windows. (lp#922117)
175 * bug fix: OPEN reports a more meaningful error when an existing file is
176 opened for output with :if-exists :new-version. Thanks to Philip
177 Munksgaard. (lp#455381)
178 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
179 CLOS-related errors. (lp#633911)
180 * bug fix: GC deadlocks caused by concurrent consing on Windows.
182 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
183 * optimization: better distribution of SXHASH over small conses of related
185 * other improvements to SXHASH:
186 ** use the whole of the positive-fixnum range for SXHASH of fixnums
187 * enhancement: The error message when calling an undefined alien function
188 includes the name of the function on x86-64.
189 * enhancement: sb-ext:run-program now supports :environment on Windows.
190 * enhancement: ASDF is no longer required to load contribs at runtime.
192 * enhancement: when called with a symbol, FIND-RESTART no longer calls
193 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
194 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
195 clusters better in some cases
196 * enhancement: SOME/ANY/other quantification higher-order functions no
197 longer cons. (lp#1070635)
198 * bug fix: forward references to classes in fasls can now be loaded.
200 * bug fix: don't warn on a interpreted->compiled function redefinition
201 from the same location. (patch by Douglas Katzman, lp#1042405)
202 * bug fix: Create vectors of proper internal length when reading literal
203 vectors from FASLs. (Reported by Jan Moringen)
204 * bug fix: COMPILE can now successfully compile setf functions.
205 (Reported by Douglas Katzman)
206 * bug fix: run-program performs more correct escaping of arguments on
207 Windows. (lp#1239242)
208 * bug fix: function-lambda-expression on generic functions returns the
210 * bug fix: (the [type] [constant]) now warns when [constant] matches
211 [type] except for the number of values. (Reported by Nathan Trapuzzano
213 * bug fix: signal errors in required cases of slot-definition initialization
214 protocol. (lp#309072)
215 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
216 (thanks to Stelian Ionescu, lp#1242643)
217 * bug fix: when given a restart object, FIND-RESTART checks whether the
218 restart is active and, when a condition is supplied, whether the restart
219 is associated to a different condition (lp#774410)
221 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
222 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
223 shutdown(3). (thanks to Jan Moringen, lp#1207483)
224 * enhancement: document extensible sequences. (thanks to Jan Moringen,
226 * optimization: EQUAL and EQUALP transforms are smarter.
227 (thanks to Elias Martenson, lp#1220084)
228 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
229 * bug fix: probe-file now can access symlinks to pipes and sockets in
230 /proc/pid/fd on Linux. (reported by Eric Schulte)
231 * bug fix: SBCL can now be built on Solaris x86-64.
232 * bug fix: Floating point exceptions do not persist on Solaris anymore.
233 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
234 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
236 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
237 (thanks to Stephan Frank)
238 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
239 (thanks to Stephan Frank, lp#1206191)
240 * bug fix: sb-safepoint can now reliably handle signal interruptions of
241 foreign code. (lp#1133018)
242 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
243 constructors no longer fails to merge actual and default initargs
244 (thanks to Jan Moringen, lp#1179858)
245 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
246 constructors handles non-KEYWORD initialization arguments more correctly.
247 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
248 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
249 * bug fix: class definitions with CPLs inconsistent with their metaclasses
250 are less likely to destroy the object system's integrity. (lp#309076)
251 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
252 standard. (lp#1203585, thanks to Jan Moringen)
253 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
254 settings. (lp#1023721)
255 * bug fix: getting the order of arguments to
256 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
257 rather than a failed AVER. (reported by Paul Nathan)
258 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
259 arguments during copying on x86 and x86-64; it may still happen on other
260 platforms when there are more fixed arguments than stack slots.
261 (reported by Jan Moringen)
263 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
264 * enhancement: support building the manual under texinfo version 5.
266 * enhancement: Windows builds no longer display the "Kitten of Death" message.
267 A warning is instead appended to the regular banner, and may be muted with
268 --noinform. (lp#728247)
269 * enhancement: support building under new linker handling of syscalls under
270 NetBSD. (thanks to Robert Swindells)
271 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
272 (regression since 1.1.9)
273 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
274 compiler macro. (thanks to Douglas Katzman).
275 * bug fix: signal a warning when defining a setf-function when a
276 setf-expander is already present. (thanks to Douglas Katzman).
277 * bug fix: improved threading on PPC.
278 * bug fix: ROOM works again on Windows. (lp#1206456)
279 * bug fix: Streams were flushed even when there was one byte still left in
280 the buffer. (lp#910213)
281 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
282 either NIL or :ERROR. (reported by Jan Moringen)
284 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
285 * enhancement: ASDF has been updated to 3.0.2.
286 * optimization: stack frames are packed more efficiently on x86oids, which
287 ought to reduce the frequency of Methuselahn conservative references (it
288 certainly helps with gc.impure.lisp / BUG-936304 on x86).
289 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
290 recognized in modular arithmetic contexts, and compile to native negate,
291 rather than going through bignums only to keep the low bits.
292 * bug fix: Compiling potential modularic arithmetic forms does not cause type
293 errors when some integer types lack lower or upper bounds. (lp#1199127)
294 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
295 bitwidth before being used in a non-modular context. (lp#1199428)
296 * bug fix: Multiple catch/unwind blocks in a single function are now
297 allocated in the right stack order on win32. (lp#1072739)
299 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
300 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
301 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
302 * enhancement: disassemble now annotates some previously missing static
303 functions, like LENGTH.
304 * enhancement: clean.sh now also cleans doc/internals.
305 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
306 print a symbol with a package prefix.
307 * enhancement: The debugger and backtracing are more robust against buggy
308 PRINT-OBJECT methods.
309 * optimization: calls to static functions on x86-64 use less instructions.
310 * optimization: compute encode-universal-time at compile time when possible.
311 * optimization: when referencing internal functions as #'x, don't go through
312 an indirect fdefn structure.
313 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
314 * optimization: (mod fixnum) type-checks are performed using one unsigned
315 comparison, instead of two.
316 * optimization: enable more modular arithmetic transforms in the presence of
318 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
319 when the result is known to be negative.
320 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
321 * optimization: comparisons between rationals and constant floats or between
322 integers and constant ratios are now converted to rationals/integers at
324 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
325 * bug fix: problems with NCONC type derivation (reported by Jerry James).
326 * bug fix: EXPT type derivation no longer constructs bogus floating-point
327 types. (reported by Vsevolod Dyomkin)
328 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
329 addrinfo. (lp#1187041, patch by Jerry James)
330 * bug fix: uninitialized type-error conditions can now be printed.
332 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
333 listening, allowing several tests to run in parallel.
334 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
335 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
337 * bug fix: Specialised SIMD-PACK types can be negated.
338 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
339 reported by Eric Marsden)
340 * bug fix: FP return values from foreign calls are always rounded to single
341 or double float precision on x87.
342 * bug fix: Known-safe vector access on x86oids should not fail spuriously
343 when the index is of the form (+ x constant-positive-integer).
344 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
345 * bug fix: backtrace printer no longer tries to create very large lists when
346 the arg-count register is clobberred by other code. (lp#1192929)
347 * bug fix: x86 should never signal an FP exception while boxing an FP value,
348 a situation that lands us into ldb.
350 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
351 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
352 ROOM, plus a few SB-INTROSPECT functions) has been completely
353 rewritten; it may now exhibit different bugs than before.
354 * new feature: minimal runtime/compiler intrastructure support for SSE
355 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
356 feature :sb-simd-pack. This should enable intrinsics extensions as
357 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
358 for maintaining a branch for so long.
359 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
360 the working directory of the spawned process.
361 (lp#791800) (patch by Matthias Benkard)
362 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
363 stack-allocated on PPC.
364 * enhancement: "fixed objects" can now be stack-allocated on PPC.
365 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
366 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
367 also returns VOPs which do not translate any functions, and finds
368 defoptimizer types ir2convert and stack-allocate-result.
369 * enhancement: better type derivation for APPEND, NCONC, LIST.
371 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
372 heap in a manner similar to the GC rather than its previous ad-hoc
373 scheme, and is therefore no less and possibly more accurate.
374 * fixes and enhancements related to Unicode:
375 ** the character database information has been updated to Unicode 6.2;
376 ** support for canonical and compatibility decomposition of characters has
377 been added, along with support for primary composition;
378 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
379 NFKD) has been included;
380 ** querying the character database for code points not defined by Unicode
381 gives less wrong answers (lp#1178038, reported by Ken Harris)
382 * enhancement: print intermediate evaluation results for some ASSERTed
383 expressions. (lp#789497) (patch by Alexandra Barchunova)
384 * enhancement: x86-64 disassemblies are annotated with unboxed constant
385 values when there are references to (RIP-relative) unboxed constants.
386 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
387 of quadratically with the size of the input in the worst case.
389 * bug fix: handle errors when initializing *default-pathname-defaults*,
390 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
391 decoding errors, or directories being deleted.
392 * bug fix: Loading a core with a discontiguous dynamic space now correctly
393 computes the amount of dynamic space used.
394 * bug fix: disassembler missing ",8" on SHLD
395 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
396 that provide an "invalid" stack frame link for the signal handler
397 itself now use the saved-fp-and-pc mechanism to pick up from the stack
398 frame in the interrupt (signal) context. This is known to affect
399 threaded FreeBSD/x86-64.
400 * bug fix: some LOOP statements couldn't be compiled.
402 * bug fix: sb-sequence:dosequence works on literal vectors.
403 * bug fix: errors in generic arithmetic show the assembly routine's
404 caller on x86 and x86-64. (lp#800343)
405 * bug fix: Compile-time type errors should never result in COMPILE-FILE
407 * bug fix: Known bad local calls do not cause strange failures when
408 emitting or dumping code. (lp#504121)
409 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
410 codegen errors: type checks are inserted as necessary. (lp#1177703)
411 * bug fix: Unsigned modular arithmetic is correctly converted into signed
412 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
413 * bug fix: a combination of inlined local function with &optional and
414 recursion no longer causes undescriptive compiler errors. (lp#1180992)
415 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
416 when testing for non-zero-ness.
417 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
419 * bug fix: Type mismatch for the value of conditional expressions are
420 correctly reported when detected at compile-time, instead of complaining
421 about a constant NIL (similar for non-EQ-comparable catch tags).
422 * bug fix: Referring to INLINE global functions as values should not result
423 in a compilation failure. (lp#1035721)
424 * optimization: faster ISQRT on fixnums and small bignums
425 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
426 * optimization: On x86-64, the number of multi-byte NOP instructions used
427 for code alignment is now always minimal.
428 * optimization: On 64-bit targets, the compiler generates much faster
429 code for type checks for types known at compile time that are smaller
430 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
431 their COMPLEX variants.
432 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
433 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
434 * optimization: ROOM no longer conses so egregiously on non-x86oid
436 * optimization: associative bitwise operations reassociate patterns like
437 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
439 * optimization: quasiquote expressions now perform more constant folding,
440 instead of consing equal lists at runtime. (lp#1026439)
441 * optimization: local call analysis of inlined higher-order function
442 should converge more quickly, resulting in better code for complex
444 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
445 integer constants are handled more cleverly, especially when they
446 can be represented as sign-extended (signed-byte 32). (Based on a
447 patch by Douglas Katzman)
448 * optimization: IF/IF conversion should reliably result in sane code
449 when (some of) the results of the inner IF are always false or
451 * optimization: On x86oids, variable right shifts of machine words are
452 compiled into straight SAR/SHR, instead of going through the generic
455 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
456 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
458 * bug fix: :allocation slot option works for condition slots
460 * bug fix: redefining conditions does not lead to multiple evaluations of
461 hairy slot initfunctions anymore (lp#1164969)
462 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
464 * bug fix: function constants now work as initforms and default initarg
465 values of conditions (lp#539517)
466 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
467 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
468 * bug fix: no more bogus ## references when pretty printing backquoted
469 forms with non-trivial structure sharing. (lp#1161218)
470 * bug fix: Don't signal an error on (setf (documentation nil 'function)
471 "doc"). Signal a style-warning instead when trying to set documentation
472 of NIL for all other documentation types. (Reported by Zach
473 Beane; regression since 2e52fa05.)
474 * bug fix: modular arithmetic involving large constants and conditionals
475 should no longer result in spurious dead code elimination. (Reported by
477 * bug fix: our mach exception handler can seemingly called very early in
478 the program execution process on OS X 10.8.0. Try and handle that case
479 robustly, without potentially leaking mach ports too much.
480 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
482 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
483 * enhancement: the continuable error when defknown-ing over extant
484 fndb entries can be ignored by passing :overwrite-fndb-silently t
485 as a keyword argument to sb-c:defknown (after attributes). Useful
486 to allow defknown to be re-loaded. Use with :allow-other-keys t
487 for backward compatibility.
488 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
490 * bug fix: Prevent a make-array transform from modifying source forms
491 causing problems for inlined code. Thanks to Bart Botta.
492 (regression since 1.0.42.11-bis)
493 * bug fix: clear-output calls the correct gray stream routine,
494 sb-gray:stream-clear-output. (lp#1153257)
495 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
497 * bug fix: Better error messages for package operations (lp#1154776)
498 * bug fix: delete-package on a nonexistent package should signal a cerror.
499 (regression since 1.0.37.44).
500 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
501 (lp#1154946, lp#1072112)
502 * bug fix: compiling make-array no longer signals an error when the
503 element-type is an uknown type, a warning is issued instead.
504 Thanks to James Kalenius (lp#1156095)
505 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
506 produces wrong results for some inputs. (Thanks to Jan Moringen.)
509 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
510 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
512 * new feature: package local nicknames. See manual for details.
513 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
514 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
515 * enhancement: easier to use restarts for resolving name-conflicts
516 resulting from IMPORT, EXPORT, or USE-PACKAGE.
517 * enhancement: variant DEFPACKAGE forms now signal a full error with
518 restarts provided for resolving the situation. (lp#891351)
519 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
520 DEFPACKAGE forms can now signal a full error with restarts provided for
521 resolving the situation. See manual for details. (lp#891351)
522 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
523 (Thanks to Anton Kovalenko.) (lp#1102748)
524 * enhancement: backtrace improvements
525 ** secondary CLOS dispatch functions have better debug names (lp#503081)
526 ** easier to read method names in backtraces. See
527 SB-DEBUG:*METHOD-FRAME-STYLE*.
528 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
529 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
530 SB-DEBUG:BACKTRACE-AS-LIST.
531 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
532 information is available in less intrusive form as frame annotations.
533 * enhancement: SB-POSIX now provides MAP-ANON.
534 * enhancement: test-suite results are colorized, failures in red, unexpected
535 success in green. Works on Windows and on terminals with ANSI escape code
536 support. Can be disabled with --no-color.
537 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
538 (thanks to James M. Lawrence)
539 * bug fix: no more unused variable style warnings from RESTART-CASE
540 macroexpansion (lp#1113859)
541 * bug fix: no more unused variable style warnings when loading
542 sb-bsd-sockets.asd (lp#1114681)
543 * bug fix: deleting a package removes it from implementation-package
544 lists of other packages.
545 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
546 This does not fix the occasional "interrupt already pending" issue, though.
547 * bug fix: (setf (documentation 'x 'function)) and
548 (setf (documentation #'x t)) set documentation in different places.
549 (regression since 1.0.43.63)
550 * bug fix: build on newer glibc. (lp#1095036)
552 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
553 * optimization: LOOP expressions using "of-type character" have slightly
554 more efficient expansions.
555 * bug fix: very long (or infinite) constant lists in DOLIST do not result
556 in very long compile times or heap exhaustion anymore. (lp#1095488)
557 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
558 * bug fix: adjust-array ignored :initial-element for simple-vectors.
560 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
561 longer cause infinite loops (on circular data) or violate eqlity
562 constraints. (lp#1099708)
563 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
565 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
566 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
568 * enhancement: support for C-c to interrupt the foreground thread
569 on Windows. (Thanks to Anton Kovalenko.)
570 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
571 * enhancement: Safepoint builds on POSIX platforms can now optionally be
572 built without pseudo-atomic sequences and their run-time overhead.
573 * enhancement: Threads created outside of Lisp can enter Lisp through
574 alien callbacks and appear as Lisp threads for the duration of that
575 function invocation. On safepoint builds only.
576 * enhancement: Miscellaneous improvements to namestrings and underlying
577 calls to OS functions for file system access on Windows. (Thanks to
579 * enhancement: The MSI installer support for Windows now uses Windows
580 Installer XML at least version 3.5 and includes various usability
581 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
582 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
583 on Windows. (Thanks to Anton Kovalenko.)
584 * enhancement: The Windows backend now supports the x86-64 platform.
585 (Thanks to Anton Kovalenko.)
586 * bug fix: fasls are now once again directly executable (on platforms
587 supporting shebang lines, with a suitably-installed sbcl).
588 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
589 * bug fix: Fix CAS access to slots of direct instances of structure classes
590 in the presence of subclasses sharing the same conc-name.
591 * bug fix: Logical pathname namestrings on Windows have been changed to
592 be lower-case, to minimize differences between POSIX and Windows.
594 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
595 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
596 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
597 (NT 5.0) is no longer being maintained.
598 * notice: Starting with this version, SBCL on Windows no longer supports
599 building with disabled thread support.
600 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
601 * enhancement: New feature sb-dynamic-core allows the runtime to be
602 rebuilt or relocated without requiring changes to the core file on
603 all linkage table platforms. Required on Windows. (Thanks to Anton
605 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
606 * enhancement: I/O on Windows unnamed pipes is interruptible
607 asynchronously using interrupt-thread, timers when running on Windows NT
608 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
610 * enhancement: Support for the experimental safepoint-based stop-the-world
611 protocol on the PowerPC platform.
612 * bug fix: Non-blocking reads from the Windows console were not necessarily
613 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
614 * bug fix: stability of threads on Windows has been improved upon through
615 an updated stop-the-world protocol (thanks to Anton Kovalenko).
617 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
618 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
619 (COMPILE and COMPILE-FILE still do.)
620 * optimization: the SPARC backend now supports the precise generational
621 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
622 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
623 * enhancement: add experimental support for the SB-THREAD feature and the
624 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
625 Threads are enabled by default, and this version of SBCL is considered
626 to be the last and final release to officially support building with
628 * optimization: The compiler no longer rotates loops in some cases where
629 this transformation actually lead to worse code being generated.
630 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
631 symbol-macros by lexical bindings.
632 * bug fix: stack allocation was prevented by high DEBUG declaration in
634 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
635 (thanks to SANO Masatoshi)
636 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
637 :JUNK-ALLOWED was true.
638 * bug fix: type derivation inferred overly conservative types for
639 unions of array types. (lp#1050768)
641 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
642 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
643 source annotation of DISASSEMBLE output. Defaults to T.
644 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
645 WAIT-P argument added to WITH-RECURSIVE-LOCK.
646 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
648 * enhancement: Optional features (not enabled by default) allow the
649 use of signals for inter-thread synchronization to be reduced on certain
650 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
651 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
652 to test these experimental features. Known remaining bugs include minor
653 thread safety issues, less timely freeing of memory by GC, and certain
654 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
655 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
656 comparisons, particularly on almost-sorted inputs.
657 * bug fix: Reading floats with large exponents no longer takes too much time
658 before reporting that the exponent is too large.
659 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
660 correctly when the received datagram is larger than the provided buffer.
661 (lp#1023438, thanks to Robert Uhl)
662 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
663 a SYMBOL-VALUE form with a constant symbol argument.
664 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
665 into a DEFCAS defined place was used as the place.
666 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
667 for from bit-vectors.
668 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
669 lead to internal errors or crashes (lp#1058799).
670 * documentation: a section on random number generation has been added to the
673 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
674 * enhancement: implicit generic function warnings now specify the package
675 in which the new generic function is being created.
676 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
677 updates of CAS-able places (similar to Clojure's swap!).
678 * enhancement: run-program no longer decodes and re-encodes environment when
679 :environment argument is not provided. (lp#985904)
680 * enhancement: errors during compiler-macro expansion no longer cause
681 runtime errors, only a compile-time warning, otherwise behaving as if
682 the compiler macro had declined to expand.
683 * optimization: On x86-64, code alignment of block headers is done with
684 multi-byte NOPs now instead of repetitions of the single-byte NOP.
685 * optimization: MAP-INTO is substantially faster when the target sequence is
686 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
687 thanks to James M. Lawrence)
688 * optimization: the compiler no longer heap-conses to check exits in cases
689 where the exit function is dynamic extent, or when it can prove the exit
690 function cannot escape. (lp#1002534)
691 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
692 element type, and vectors that aren't SIMPLE-ARRAYs.
693 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
694 speed (around 1/3 the time in some cases), and a little better in terms of
695 comparison calls. (Thanks to Takeru Ohta)
696 * bug fix: On SPARC, a limitation on the number of code constants emittable
697 by the compiler has been lifted, allowing certain long functions to
698 compiled and assembled which had previously been unsupported; fixes
699 cl-bench on this ISA (lp#1008996).
700 * bug fix: potential for infinite recursion during compilation of CLOS slot
701 typechecks when dependency graph had loops. (lp#1001799)
702 * bug fix: error forms reported with some program-errors were not escaped
704 * bug fix: functions from EVAL are now on more equal footing with functions
705 from COMPILE. (lp#1000783, lp#851170, lp#922408)
706 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
707 objects as its :METHOD-COMBINATION argument, not just lists designating
708 method combinations. (lp#936513)
709 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
711 * bug fix: restore build on solaris/sparc. (lp#1008506)
712 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
713 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
714 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
715 as keyword arguments no longer accidentally match unevaluated symbols
717 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
718 parameter was zero, now it signals an error. (lp#905817, fixed since
720 * bug fix: run-program with :pty t no longer makes the pty as the process's
722 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
725 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
726 * RANDOM enhancements and bug fixes:
727 ** bug fix: the range and distribution of random integers could be
728 catastrophically wrong when the compiler derived the type of its
729 argument as a disjoint set of small integers.
730 ** bug fix: the distribution of random integers is now completely
731 uniform even when the specified limit is not a power of two.
732 (Previously some values could be about 0.1 % more probable than
733 others in the worst case.) (lp#309467)
734 ** RANDOM on large integer arguments is generally faster and conses
735 less than before; this is visible for fixnums above a length of
736 about 24 bits, but extremely so for bignums: the old implementation
737 used time and space quadratical in the size of the argument there,
738 the new one is linear.
739 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
740 main entry point, SB-EXT:QUIT is deprecated.
741 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
742 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
743 * enhancement: FASL loading no longer grabs the world-lock.
744 * enhancement: GENCGC reclaims space more aggressively when objects being
745 allocated are a large fraction of the total available heap space.
747 * enhancement: backtraces show the correct number of arguments for frames
748 called with too many arguments.
749 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
751 * enhancement: ASDF has been updated 2.21.
752 * optimization: fewer uses of full calls to signed modular functions.
754 * optimization: typechecking alien values is typically 5 x faster.
755 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
757 * bug fix: file compilation performance issues when dumping subtypes
758 of CHARACTER (lp#994487)
759 * bug fix: fixed disassembly of some SSE instructions on x86-64.
760 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
761 OPEN. (lp#969352, thanks to Kambiz Darabi)
762 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
764 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
765 classoid even if X was not the proper name of the class. (lp#941102)
766 * bug fix: declaration leakage between lexical environments due to careless
767 use of NCONC in MAKE-LEXENV. (lp#924276)
768 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
769 *default-pathname-defaults* contains NAME or TYPE components.
770 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
771 from CL package, e.g. (loop . 10).
772 * bug fix: run-program with existent or non-existent files for :output or
773 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
774 returns NIL instead of signalling an obscure error.
775 * bug fix: fix miscompilation of some logand forms with large constant
776 arguments. (lp#974406)
777 * bug fix: account for funcallable-instance objects properly in ROOM.
778 * bug fix: incorrect octets reported for c-string decoding errors.
780 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
782 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
783 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
784 allowing faster release of memory back to the OS. (lp#991293)
785 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
786 existing deadline for the dynamic scope of its body.
787 * bug fix: compiler-internal interval arithmetic needed to be more
788 conservative about open intervals when operated on by monotonic but not
789 strictly-monotonic functions. (lp#975528)
790 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
791 it's also slightly faster. (lp#998926)
792 * bug fix: better error messages for malformed declarations.
794 * bug fix: define-condition didn't return the name of the defined condition.
796 ** improved docstrings: REPLACE (lp#965592)
798 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
799 * bug fix: fix copy-structure. When copying from stack to heap, garbage
800 could end up in the heap making GC unhappy.
801 (Thanks to James Knight, lp#911027)
803 ** SBCL can now be built using Clang.
804 ** ASDF has been updated 2.20.
805 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
806 * bug fix: don't complain about a too-hairy lexical environment for inlining
807 when the function has never been requested for inlining. (lp#963530)
809 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
810 * enhancements to building SBCL using make.sh:
811 ** --fancy can be specified to enable all supported feature enhancements.
812 ** --with-<feature> and --without-<feature> can be used to specify
813 which features to build with.
814 ** --arch option can be used to specify the architecture to build for.
815 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
816 full-blows cross-compilation.)
817 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
818 which allows specifying name of the default interning package for the
820 * enhancement: when *READ-EVAL* is true, arrays with element type other than
821 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
822 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
823 null alien when malloc() fails. (lp#891268)
824 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
825 conditions can be conveniently accessed through function with the same
826 name, analogously to CONTINUE.
827 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
828 from the printer by type, causing an error marker to be printed instead.
829 (Thanks to Attila Lendvai)
830 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
831 generally behave better when errors occur during printing.
832 * enhancement: the test runner now takes a --report-skipped-tests argument
833 to report the individual tests skipped as well as the number of skipped
835 * enhancement: undefined functions now appear in backtraces as ("undefined
836 function") instead of ("bogus stack frame") on x86oids.
837 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
838 deadlock errors are reported in an easier-to-decipher manner.
839 * enhancement: DESCRIBE on type designators reports the expansion in more
841 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
842 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
843 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
844 * enhancement: better disassembly of segment-prefixes on x86 and other
845 instruction prefixes (e.g. LOCK) on x86 and x86-64.
846 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
847 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
848 * optimization: SUBSEQ on vectors of unknown element type is substantially
850 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
851 be stack-allocated. (lp#902351)
852 * optimization: the compiler is smarter about representation selection for
853 floating point constants used in full calls.
854 * optimization: the compiler no longer refuses to coerce large fixnums to
855 single floats inline, except on x86 where this limitation is still
857 * optimization: truncation operations on integers with constant divisor
858 arguments 1 and -1 are optimized away.
859 * bug fix: deadlock detection could report the same deadlock twice, for
860 two different threads. Now a single deadlock is reported exactly once.
861 * bug fix: interval-arithmetic division during type derivation did not
862 account for signed zeros.
863 * bug fix: compiler error when typechecking a call to a function with
864 non-constant keyword arguments.
865 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
866 * bug fix: condition slot accessors no longer cause undefined function
867 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
868 form that defines them. (lp#896379)
869 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
871 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
872 bogusly report NIL, T.
873 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
874 required arguments ignored and performed assignments to others.
876 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
877 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
878 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
879 * bug fix: redefining a function whose previous definition contained an
880 unknown type no longer causes a style-warning. (lp#806243)
881 * bug fix: undefined functions now appear in backtraces as ("undefined
882 function") instead of ("bogus stack frame") on non-x86oids.
883 * bug fix: backtraces are no longer cut off at ("undefined function") when
884 called under certain circumstances (involving a caller-allocated stack
886 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
887 systems. (regression since 1.0.53)
888 * bug fix: GC deadlocks from dladdr() on certain platforms.
889 * bug fix: broken standard streams no longer automatically cause recursive
890 errors on debugger entry.
891 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
892 (regression since 1.0.53)
893 * bug fix: attempts to stack allocate a required argument to a function with
894 an external entry point caused compiler-errors.
895 * bug fix: compiler notes for failed stack allocation for a function argument
896 no longer claim to be unable to stack allocate the function.
897 * bug fix: COERCE now signals a type-error on several coercions to
898 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
899 * bug fix: missing failure-to-stack-allocate compiler notes for some
900 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
901 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
903 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
905 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
906 * minor incompatible changes:
907 ** RENAME-FILE on a symbolic links used to rename the linked-to file
909 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
910 directory, but now signal an error instead. Use TRUENAME to resolve the
911 pathname if you wish to delete the linked directory, and DELETE-FILE if
912 you wish to delete the
913 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
914 symbols associated with it will trigger a compile-time warning.
915 * thread-related enhancements:
916 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
917 Many thanks to generous donors!)
918 ** Threading is now more reliable on non-Linux platforms. We still don't
919 consider threads on non-Linux platforms good enough to enable them by
920 default, but they're in a clearly better shape now.
921 ** Deadlines supported now on all platforms.
922 ** All blocking functions in the threading API now have a :TIMEOUT
924 ** Semaphore notification objects have been added to SB-THREAD.
925 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
926 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
927 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
928 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
929 using an API anologous to defining new SETFable places.
930 * GC-related enhancements and bug fixes:
931 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
932 and Gb suffixes. Default is megabytes as before.
933 ** on GENCGC targets, the default dynamic space size is now 512Mb for
934 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
935 exception, defaulting to mere 444Mb to fit under default ulimits.) The
936 new defaults are in place to prevent hitting swap on low-end systems.
937 Use build-time option --dynamic-space-size to build an SBCL with
938 another default, or the runtime option to adjust the size at startup: a
939 good size is at most equal to the amount of physical memory the system
941 ** on GENCGC targets, nursery and generation sizes now default to 5% of
943 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
944 refuses to create SIMPLE-FUN objects.
945 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
947 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
948 validation of pointer objects as GENCGC does, instead of a
949 comparatively weak bounds-check against the heap spaces.
950 * SB-BSD-SOCKETS bug fixes:
951 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
952 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
953 systems with getaddrinfo().
954 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
955 safe outside systems with getaddrinfo().
956 * enhancement: ASDF has been updated 2.019.
957 * enhancement: special-case TCO prevention for functions which never return
958 extended to untrusted types, keeping one more frame's worth of debug
959 information around in many cases.
960 * enhancement: debug-names of anonymous and local function are more
961 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
962 * enhancement: on win32, ABS of complex floats guards better against
963 overflows. (lp#888410)
964 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
965 process exiting with code 1. (lp#676987)
966 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
967 the system where on the filesystem the SBCL sources themselves are
968 located. (Thanks to Zach Beane)
969 * enhancement: the compiler is now able to derive tighter bounds for
970 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
971 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
972 correctly, even on wide-fixnum builds. (lp#887220)
973 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
974 resolved to directories.
975 * bug fix: type mismatch when assigning to lexical variables no longer
976 result in fasl-dumping internal type objects. (lp#890750)
977 * bug fix: type mismatch on (SETF AREF) and function return values no
978 longer result in fasl-dumping internal type objects.
979 * bug fix: With several combinations of argument types, for example (EXPT
980 <integer> <(complex double)>), EXPT now uses double-precision throughout
981 instead of partially calculating only to single-precision. (lp#741564;
982 thanks to Lutz Euler)
983 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
984 objects when interrupted by GC on PPC.
986 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
987 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
988 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
989 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
990 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
991 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
992 targets is now 63 bits (up from 61).
993 * enhancement: DESCRIBE now reports a lambda-list and source location
994 for complext setf-expanders.
995 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
996 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
997 of multiple-valued places to be set to NIL, instead of signalling an
998 error (per a careful reading of CLHS 5.1.2.3).
999 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1000 * bug fix: repair crash in x86oid darwin signal handling emulation
1001 when built with certain compilers.
1002 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1003 rotation arguments on x86-64. (lp#882151)
1004 * bug fix: low-level control flow optimisations could result in bogus
1005 code in functions with tail and non-tail calls to local functions on
1006 x86oids. (lp#883500)
1007 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1008 to emit literal characters > (code-char 4095), for comparisons with
1009 constant characters.
1010 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1011 on 64 bit platforms. (lp#881445)
1012 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1013 delete the wrong file when using relative pathnames. (lp#882877)
1014 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1015 sequences and :KEY NIL.
1017 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1018 * enhancement: ASDF has been updated to version 2.017.
1019 * enhancement: the --core command line option now accepts binaries with
1021 * enhancement: when built with :sb-core-compression, core files (regular
1022 or executable) can be compressed with zlib. Use the :COMPRESSION
1023 argument to SAVE-LISP-AND-DIE to specify a compression level.
1024 * enhancement: --[no-]merge-core-pages determines whether the runtime
1025 hints the operating system that identical core pages between SBCL
1026 processes should share the same physical memory. Default is to only
1027 enable this for compressed cores.
1028 * optimization: SLEEP no longer conses.
1029 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1030 or bit-vectors when using the standard pretty-print dispatch table.
1031 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1033 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1034 AREF, CHAR, etc. (lp#826971)
1035 * bug fix: compiler-errors causes by integer arguments with composed of
1036 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1037 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1038 expressions. (lp#770184)
1039 * bug fix: complex single float literals are correctly aligned when used
1040 as arguments of arithmetic operators.
1041 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1042 fixnum is correct. (reported by Peter Keller)
1043 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1044 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1046 * bug fix: redefining classes such that slots with custom allocation are
1047 added or removed works again.
1049 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1050 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1051 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1052 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1053 * enhancement: added support for socket keepalive timeout intervals
1054 and probe counts on Linux.
1055 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1056 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1057 * enhancement: added new toplevel options --quit and --non-interactive
1059 * enhancement: the Windows port of SBCL now builds and runs on Wine
1060 (thanks to Anton Kovalenko).
1061 * enhancement: more, and more correct, SSE instruction definitions on
1062 x86-64 (thanks to Alexander Gavrilov).
1063 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1064 to help the processor execute spin loops, when applicable. Currently
1065 implemented for x86 and x86-64.
1066 * optimization: unsigned integer divisions by a constant are implemented
1067 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1068 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1069 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1070 instructions. (lp#814688)
1071 * bug fix: COERCE to unfinalized extended sequence classes now works.
1072 (reported by Jan Moringen; lp#815155)
1073 * bug fix: a compiler error during typecheck generation, reported by Eric
1074 Marsden. (lp#816564)
1075 * bug fix: obsolete instance protocol fires when shared slots are added
1077 * bug fix: fixed-format floating point printing with scaling factors.
1079 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1080 backtraces. (lp#818460)
1081 * bug fix: better backtraces for interrupted syscall frames on x86.
1083 * bug fix: SSE comparison instructions can be disassembled even when one
1084 operand is in memory. (lp#814702)
1085 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1086 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1087 type information associated with the VALUES form.
1088 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1090 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1091 first write (lp#561642).
1092 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1093 * bug fix: bound propagation involving conversion of large bignums to
1094 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1096 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1097 functions; reported by Lutz Euler (lp#826459).
1098 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1101 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1102 * enhancement: errors from FD handlers now provide a restart to remove
1103 the offending handler.
1104 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1106 * enhancement: location of user or system initialization file can now easily
1107 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1108 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1109 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1110 the thunk, as a keyword argument, :arguments.
1111 * enhancement: constraint propagation is simplified (and sped up) when
1112 COMPILATION-SPEED > SPEED.
1113 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1114 * enhancement: debugger understands &MORE arguments better.
1115 * optimization: extracting bits of a single-float on x86-64 has been
1116 optimized. (lp#555201)
1117 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1118 when (> SPEED SPACE).
1119 * optimization: local call trampolines (x86 and x86-64) are emitted
1121 * optimization: implicit value cells for dynamic-extent closed-over bindings
1122 on x86 and x86-64 can hold unboxed values as well.
1123 * meta-optimization: improved compilation speed, especially for large
1124 functions. (lp#792363 and lp#394206)
1125 * bug fix: bound derivation for floating point operations is now more
1126 careful about rounding possibly closing open bounds. (lp#793771)
1127 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1128 backwards incompatible change in 1.0.48.27)
1129 * bug fix: occasional debugger errors in when a type-error occured in a
1130 function with dynamic-extent &rest list.
1131 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1132 boa-construtors can be used to initialized structure slots.
1133 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1134 (lp#795705, regression)
1135 * bug fix: DIRECTORY works better on logical pathnames.
1136 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1137 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1138 * bug fix: the compiler no longer constant-folds NaNs in
1139 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1140 * bug fix: FORMAT now handles floating point rounding correct, eg.
1141 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1143 * bug fix: style warning during lambda-list introspection of generic
1144 functions with both optional and key argments.
1145 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1146 folding. (lp#729765)
1147 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1150 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1151 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1152 interrupts for its body.
1153 * enhancement: source locations are now available for files loaded as
1154 source, compile-time-too evaluation, and initialization files.
1155 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1156 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1157 when a temporary file is used for compilation.
1158 * enhancement: ASDF has been updated to version 2.015.3.
1159 * enhancement: backtraces involving frames from the default evaluator are
1161 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1163 * enhancement: more informative compile-time warnings and runtime errors for
1164 type-errors detected at compile-time.
1165 * enhancement: deadlock detection for mutexes and spinlocks.
1166 * enhancement: dynamic-extent for &rest lists stack allocate only their
1167 spines, not their argumets. While portable code should not rely on this,
1168 particularly in combination with inlining, it should make dynamic-extent
1169 easier to use safely.
1170 * enhancement: SB-POSIX improvements:
1171 ** WNOHANG and WUNTRACED are exported.
1172 ** SYSCALL-ERROR now also provides the name of the failing system call.
1173 * enhancement: --script improvements:
1174 ** errors on standard input, output, and error streams are handled and
1175 cause scripts to exit silently, making them easier to use in shell
1177 ** backtraces from scripts now go to standard error instead of the
1178 terminal even if one is available.
1179 ** --script can be an argument, causing the script to be loaded from
1181 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1182 strings to foreign memory.
1183 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1184 a file, making it easier to understand heap dynamics.
1185 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1186 allows the compiler to automatically elide rest-list allocation so long as
1187 the call sites are in functions that the compiler knows cannot escape.
1189 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1190 especially in safe code when none of the required arguments have changed
1192 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1193 uninterruptible, as well as blocking reads from socket streams created
1194 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1195 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1196 from the to-char if the from-char is not a dispatch-macro character.
1197 * bug fix: references to undefined variables in function calls that are
1198 optimized away now signal a runtime error. (lp#722734)
1199 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1200 types from a function defined in the same file. (regression from
1202 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1204 * bug fix: spurious errors during QUIT when standard streams were closed.
1206 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1207 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1208 years, is now no longer supported.
1209 * enhancement: read() and write() have been added to SB-POSIX.
1210 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1211 accurately, allowing better typechecking of call-sites.
1212 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1213 are no longer caught. (reverted to pre 1.0.34 behaviour)
1214 * optimization: slightly faster ISQRT. (lp#713343)
1215 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1216 * bug fix: TRACE behaves better when attempting to trace undefined
1217 functions. (lp#740717)
1218 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1219 to (FUNCALL #'(LAMBDA ...) ...).
1220 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1221 a compile-time error. (lp#720382)
1222 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1224 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1225 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1226 optimization. (regression from 1.0.45.18/1.0.46.15)
1227 * bug fix: package locks did not protects against compile-time side-effects
1228 of DEFUN. (lp#675584)
1229 * bug fix: --dynamic-space-size argument is validated more carefully.
1231 * bug fix: memory fault from printing a malformed simple-condition.
1233 * bug fix: redefining classes so that slot-definition classes change now
1234 engages the obsolete instance protocol. (lp#766271)
1235 * bug fix: constant improper lists could break source coverage recording.
1237 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1238 could exhaust stack.
1240 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1241 * bug fix: fix mach port rights leaks in mach exception handling code on
1242 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1244 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1245 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1246 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1247 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1248 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1249 processed using EVAL -- now the appropriate toplevel form is reported instead.
1250 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1251 declarations. (lp#726331)
1252 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1253 that NIL/NULL is excluded from the type.
1254 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1256 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1257 and its compatriots.
1258 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1259 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1260 stack-allocated values out of their dynamic-extent. (lp#310175)
1261 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1262 x86-64 builds caused a type-error.
1263 * bug fix: calling COMPILE with something else than a lambda-expression as the
1264 second argument reports a more sensible error. (lp#718905)
1265 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1266 are detected. (lp#520607)
1267 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1269 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1270 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1271 methods. (regression from 1.0.45.18)
1272 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1273 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1274 * bug fix: several foreign functions accepting string also accepted NIL and
1275 consequently caused a memory fault at 0 now signal a type-error instead.
1277 * bug fix: under rare circumstances, constraint propagation could rewrite a
1278 variable reference to refer to a variable not in scope, causing an error
1279 during physical environment analysis when attempting to close over the
1280 variable. (lp#551227)
1281 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1283 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1284 * enhancement: largefile support on Solaris.
1285 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1286 arguments (lp#710017)
1287 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1288 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1290 * optimization: ERROR and CERROR are approximately 5 times faster.
1291 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1292 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1293 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1294 up instance creation in those cases.
1295 * optimization: arithmetic operations with multiple constant arguments in now
1296 have them reduced at compile-time. (lp#676414)
1297 * optimization: determining current character position on string-streams for
1298 pretty-printing was overly slow.
1299 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1300 lifetime analysis to overwrite closed-over variables (lp#681092).
1301 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1302 were not handled correctly (lp#713063).
1303 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1305 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1306 mistake. (lp#667297).
1307 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1308 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1309 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1310 unintern the wrong symbol with the same name. (lp#693796)
1311 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1312 making it possible to restore the initial table if it has been messed up.
1315 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1316 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1317 Refer to documentation for details.
1318 * enhancement: ASDF has been updated to version 2.010.
1319 * optimization: mutated closed-over variables that are only accessed by
1320 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1321 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1322 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1323 * optimization: UNWIND-PROTECT cleanup functions are now declared
1325 * bug fix: backtracing function with &REST arguments now shows the full
1326 argument list. (lp#310173)
1327 * bug fix: return types for functions with complex lambda-lists are now
1328 derived properly (lp#384892)
1329 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1330 long string arguments slowed the compiler down to a crawl.
1331 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1332 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1333 in the DEFMETHOD body.
1334 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1335 messages, being instead replaced with the corresponding function name.
1336 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1337 operators. (lp#309448)
1339 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1340 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1341 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1342 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1344 * enhancement: default dynamic-space size can be configured at build-time
1345 without touching source, using the --dynamic-space-size argument to make.sh.
1346 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1347 qualities, and mentions ALWAYS-BOUND declarations.
1348 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1350 * enhancement: ASDF has been updated to 2.009.
1351 * enhancement: the system detects known type-erros in calls better,
1352 signalling a full warning about violated proclaimed FTYPEs and violations
1353 of derived FTYPEs within the same file, including self-calls.
1354 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1355 * optimization: constant-folding exploits numeric and character types, in
1356 addition member types.
1357 * optimization: numeric, character and member types that are inhabited by
1358 exactly one value are tested with EQL.
1359 * optimization: more conditional branches are eliminated during IR1.
1360 Branches are simplified before performing if/if-conversion, and simple
1361 equivalent branches (that only read the same constant or variable) are
1363 * improvements to the Windows port:
1364 ** change: canonical unparsing form for pathname namestrings now uses / as
1365 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1366 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1367 on Windows. (thanks to Kalyanov Dmitry)
1368 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1370 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1371 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1372 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1373 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1375 * bug fix: interrupts arriving during CL:OPEN caused an error.
1376 * bug fix: overeager character buffering could cause input to block
1377 spuriously when reading from a pipe (lp#643686)
1378 * bug fix: more efficient timer expiry should avoid starvation on systems
1379 where number of SIGALRMs per second is restricted. (lp#375515)
1380 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1381 * bug fix: compile-times no longer scale linearly with the size of
1382 quoted lists in source-code. (lp#654289)
1383 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1384 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1385 so badly. (lp#654485)
1386 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1387 an error for eg. STRUCTURE. (lp#458015)
1388 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1389 (lp#613871, thanks to Roman Marynchak)
1390 * bug fix: more reliable &REST list type derivation. (lp#655203)
1391 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1392 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1393 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1394 also declared NOTINLINE. (lp#655581)
1395 * bug fix: the compiler could attempt to emit constant left shifts of
1396 greater value than n-word-bits. (lp#309063)
1397 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1398 type information for the function being set. (lp#659220)
1399 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1400 containing self-calls were recompiled with a new signature, and failed
1401 to warn when a self-call using the old signature was left in. (lp#655126)
1402 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1403 :DEFAULT when the default external had character size other than 8 bits.
1405 * bug fix: derived types of functions in the same file were implicitly
1406 trusted, leading to potential heap corruption when those function were
1407 defined incompatibly. (lp#657499)
1408 * bug fix: existing ASDF source registries are ignored when building
1409 contribs (lp#659105)
1410 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1411 (lp#655824, thanks to Roman Marynchak)
1412 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1413 package-lock violation was detected. (lp#660752)
1414 * bug fix: the system can store different docstrings for a single function
1415 under different names. (lp#661631, regression from 1.0.29.24)
1416 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1417 properly. (lp#384801)
1418 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1419 of specified length could confuse the type derivation in unsafe code.
1421 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1422 fork with multiple Lisp threads running is made on every platform,
1423 not just Darwin. (lp#451111)
1424 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1425 around when core was saved, which could cause undefined behaviour when the
1427 * bug fix: Allow UNTRACE of functions that are no longer defined
1428 (lp#667657, thanks to Attila Lendvai)
1429 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1430 compile-time warning (lp#664373, thanks to Stas Boukarev)
1432 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1433 * incompatible change: FD-STREAMS no longer participate in the serve-event
1434 event-loop by default. (lp#316072)
1435 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1436 affects streams from CL:OPEN.
1437 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1438 default, but this is liable to change: applications needing serve-event
1439 for socket streams should explicitly request it using :SERVE-EVENTS T
1441 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1443 * enhancement: CLOS effective method functions and defclass slot typechecking
1444 function now have debug names for use in backtraces and profiles.
1445 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1447 * enhancement: symbols are printed using fully qualified names in several
1448 error and warning messages which are often associated with package
1449 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1450 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1451 thanks to Andrew Golding)
1452 * bug fix: reading /proc files on Linux works. (lp#425199)
1453 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1455 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1456 breaking code that tried to write the value of a printer control variable.
1457 (lp#581564, thanks to Stas Boukarev)
1458 * bug fix: WRITE compiler macro did not handle output stream designators
1459 correctly. (lp#598374, thanks to Stas Boukarev)
1460 * bug fix: better availability of names of foreign functions in backtraces
1461 on Linux. (lp#626962, thanks to Stas Boukarev)
1462 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1463 lp#627581, thanks to Josh Elsasser and Jim Wise)
1464 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1465 thanks to Josh Elsasser)
1466 * bug fix: using aliases for builtin classes as defmethod specializers
1467 without adding DEFTYPEs for them works. (lp#618387)
1468 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1470 * bug fix: legally dynamic-extent lists and vectors used as
1471 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1472 * bug fix: inline-expansion creating references to dead lambda-variables
1473 (lp#454681, thanks to Alexey Dejneka)
1474 * bug fix: better error message for bogus numerical arguments to RANDOM.
1475 (lp#598986, thanks to Stas Boukarev)
1476 * bug fix: the compiler occasionally inlined references from incompatible
1477 environments occurs. (lp#308951)
1478 * bug fix: the compiler threw an error when trying to compile a local
1479 function (labels or flet) known to take a specialized complex argument.
1480 (not in launchpad, reported by sykopomp in #lispgames)
1481 * bug fix: package-locks failed to protect against compile-time effects of
1482 DEFUN when the symbol previously had a macro definition. (lp#576637)
1483 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1484 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1485 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1486 * bug fix: evaluation in debugger REPL works using the global context when
1487 in frames that do not have sufficient debug information.
1488 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1490 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1492 * bug fix: interrupt taking longer than the requested period caused SLEEP
1493 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1495 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1497 ** Cross-compilation host is now specified to make.sh using
1498 command-line argument --xc-host=<command> instead of a positional
1499 argument. (thanks to Daniel Herring)
1500 ** Install location can be specified to make.sh using command-line
1501 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1502 * optimization: The default implementation of
1503 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1504 * enhancement: Explicit memory barrier operations are now available for use
1505 by multithreaded code. See documentation for details.
1506 * enhancement: Experimental support for threading on Linux/PPC.
1507 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1508 * bug fix: EXPT signals an error if first argument is a zero and second
1509 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1510 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1511 (lp#576594, thanks to Roman Marynchak)
1512 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1513 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1515 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1516 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1517 cached, leading to many fewer expensive calls to
1518 COMPUTE-APPLICABLE-METHODS.
1519 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1520 CLASS argument, search for and call an appropriate optimized ctor function
1522 * bug fix: WRITE always returns the correct value.
1524 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1525 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1526 * bug fix: Name conflicts between symbols passed as arguments to a single
1527 call to IMPORT no longer add multiple symbols with the same name to the
1528 package (detectable via DO-SYMBOLS).
1529 * bug fix: support building without the dlshim on darwin x86 and x86-64
1531 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1533 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1534 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1536 * bug fix: linkage-table entries on PPC now no longer overflow their
1537 space allocation (potentially causing crashes if they are written out
1539 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1540 platforms, preventing the GC from seeing stale pointers on the control
1541 stack in subsequent GCs (which would, and does, break invariants).
1542 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1543 * bug fix: Literal characters with code points greater than about 32767
1544 now work on PPC UNICODE builds.
1545 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1546 high order bits are explicitly cleared out. In some contrived situations,
1547 this could lead to wrong results in mixed real/complex float arithmetic.
1548 * bug fix: Fix function/macro redefinition warnings when building with
1549 clisp. (lp#576787, thanks to Josh Elsasser)
1550 * new platform: experimental support for ppc/openbsd (thanks to Josh
1552 * bug fix: Floating-point traps now work on ppc/linux.
1554 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1555 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1556 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1557 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1558 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1559 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1560 SB-THREAD:GRAB-MUTEX.
1561 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1562 contain additional data structures and tools for concurrent programming;
1563 at the moment it contains a lock-free queue, and a lock-free mailbox
1565 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1566 GET-MUTEX but takes &key rather than &optional parameters. Also added
1567 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1569 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1570 SB-THREAD:WAIT-ON-SEMAPHORE.
1571 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1573 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1574 conditions to defer the deadline for forever.
1575 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1577 * enhancement: errors from NO-APPLICABLE-METHOD and
1578 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1579 generic function call.
1580 * enhancement: SB-BSD-SOCKET improvements
1581 ** sockets and socket streams now have a more informative printed
1582 representation based on the corresponding SOCKET-NAME and
1584 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1586 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1587 CL:CLOSE when appropriate, and no longer disassociates the stream
1588 from the socket if close failed. (lp#543951)
1589 * improvements to the instrumenting profiler
1590 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1591 ** optimization: counters no longer use locks for the overflow mode.
1592 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1593 incurred an off-by-one miscount.
1594 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1595 * enhancement: improved DEFMETHOD pretty-printing.
1596 * enhancement: perform range reduction when arguments are too large for
1597 x87's transcendentals (instead of returning 0). (lp#327192)
1598 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1599 some of CL-PPCRE's macros. (lp#570079)
1600 * enhancement: our machine code is slightly less hostile to valgrind on
1602 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1603 to Robert Swindells and Aleksej Saushev)
1604 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1605 * bug fix: a rare case of startup-time page table corruption.
1606 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1607 to timeouts could be left in an inconsistent state.
1608 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1609 * bug fix: misoptimization of multiplication by one in
1610 (SB-C::FLOAT-ACCURACY 0) policies.
1611 * bug fix: miscounts in SB-PROFILE.
1612 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1613 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1614 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1615 up itself" (March 2010) for further details.
1616 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1617 against length of the list if the element is found before the specified
1618 END is reached. (thanks to Alec Berryman, lp#554385)
1619 * bug fix: errors signalled during package graph modification no longer
1620 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1621 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1622 :SB-DOC feature. (lp#552564)
1623 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1624 * bug fix: more robust runtime executable path detection. (lp#375549)
1625 * bug fix: GCD always returns positive values. (lp#413680)
1626 * bug fix: Converting division to multiplication by reciprocal handles
1628 * bug fix: We were too eager in eliding range reduction tests on x87.
1629 The maximal magnitude is 2^63, not 2^64.
1630 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1632 * bug fix: Maybe restore buildability on Alpha.
1633 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1635 * bug fix: RANDOM-STATE can be printed readably again.
1636 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1637 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1638 types) could result in type mismatches during compilation.
1640 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1641 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1642 stack frame thrown from.
1643 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1644 compiler optimization qualities inside dynamic extent of its body.
1645 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1646 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1648 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1649 constraint propgation, allowing better compilation eg. when used to
1650 access structures with WITH-SLOTS. (lp#520366)
1651 * optimization: the compiler is now more aware of the type of the underlying
1652 storage vector for multidimensional simple arrays resulting in better code
1653 for accessing such arrays.
1654 * optimization: passing NIL as the environment argument to TYPEP no longer
1655 inhibits optimizing it. (lp#309788)
1656 * optimization: more efficient register usage when handling single-float
1657 arguments on x86-64. (thanks to Lutz Euler)
1658 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1659 pre-allocated temporary vectors. (lp#496249)
1660 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1661 in :INITIAL-CONTENTS. (lp#523612)
1662 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1663 functions. (lp#524707)
1664 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1665 WITH-SLOTS usages during compilation.
1666 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1667 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1668 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1669 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1670 instruction (tested on x86oid linux with ud2-breakpoints).
1671 * bug fix: slam.sh now works on win32.
1672 * bug fix: better differences of numeric types. (lp#309124)
1673 * bug fix: arrays declared intersection and union types can have their
1674 upgraded element type derived. (lp#316078)
1675 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1676 threads started during profiling. (lp#472499)
1677 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1679 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1680 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1681 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1682 values instead of signaling an error. (lp#309093)
1683 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1685 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1686 declarations (lp#497321)
1687 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1688 and failed to detect circular lists (lp#452008)
1689 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1691 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1692 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1693 due to it, so that handlers can run.
1694 * bug fix: reparsing undefined types if they have become defined since
1695 parsing. (lp#309128)
1696 * bug fix: missing &REST type in a proclamation for a function with both
1697 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1698 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1699 expanded calls (lp#542174)
1700 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1701 than just at toplevel form.
1703 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1704 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1705 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1706 but work on type specifiers.
1707 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1708 to name a type specifier.
1709 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1710 specifier is valid where "valid" basically means "would be accepted as
1711 second argument of TYPEP".
1712 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1713 returns the function's declared, or derived FTYPE.
1714 * new feature: SB-POSIX now supports accessing the d_ino member of
1715 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1716 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1717 provide for seeding a RANDOM-STATE object with user-provided data or
1718 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1719 attempt to initialize the returned state from the operating system's
1720 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1721 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1722 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1723 * bug fix: Fix grammar and style issues for the docstrings of
1724 printer-related variables and functions. (Thanks to mon_key; launchpad
1726 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1728 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1729 in a row even though a handler defered the deadline long into the
1731 * bug fix: A deadline handler was run without interrupts enabled for a
1732 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1733 in infinitely spinning, non-killable threads.
1734 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1735 before reaching the erring stack frame.
1736 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1737 real power. (launchpad bug lp#525949)
1738 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1739 GENCGC platforms. (launchpad bug lp#529014)
1740 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1741 (launchpad bug lp#525916)
1742 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1743 (Thanks to Robert Goldman)
1745 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1746 * optimization: ROUND with a single single-float or double-float argument
1747 is properly inlined when possible.
1748 * optimization: Slightly better code is generated for integer<->float
1749 conversions and for single-float<->double-float conversions on x86-64.
1750 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1751 code for 32-bit and 64-bit rotations on x86-64.
1752 * bug fix: The install script changes the ownership of directories as well
1753 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1754 launchpad bug lp#508485)
1755 * bug fix: TRUNCATE with a single single-float or double-float argument is
1756 properly inlined when possible. (launchpad bug lp#489388)
1757 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1758 no longer causes a compiler error on x86 and ppc.
1759 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1760 always relative to *READTABLE* rather than the passed argument.
1762 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1763 * minor incompatible change: threading support is now enabled by default
1765 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1767 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1768 are now caught and reported just like errors during macroexpansion.
1769 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1770 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1771 * enhancement: ASDF systems can now depends on SB-QUEUE.
1772 * fixes and improvements related to Unicode and external formats:
1773 ** bug fix: error handling and restart usage in the ucs-2 external format
1775 ** there is now an implementation of the ucs-4 external format.
1776 ** the utf-16 and utf-32 external formats are supported.
1777 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1778 in the environment. setenv() and unsetenv() are also provided. (reported by
1779 Fare Rideau; launchpad bug lp#460455)
1780 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1781 loading. This ensures sensible errors for .FASL files from other
1782 implementations on case-insensitive filesystems. (reported by Willem
1783 Broekema; launchpad bug lp#489417)
1784 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1785 Willem Broekema; launchpad bug lp#489698).
1786 * bug fix: some minor code rearrangements to reenable warning-free building
1787 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1788 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1790 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1793 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1794 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1795 * improvement: support O_LARGEFILE access to files larger than 2GB on
1796 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1797 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1798 definitions for methods specializing on the passed class itself.
1799 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1800 definitions for methods specializing on the passed class itself, or on
1802 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1803 about itself during the build (e.g. for M-? in Slime), if this flag is
1804 enabled in customize-target-features.lisp. This will increase the core
1805 size by about 5-6mb, though, so it's mostly interesting to SBCL
1807 * new feature: various GENCGC tuning parameters have been experimentally
1808 documented and exported from SB-EXT. See documentation for details.
1809 * fixes and improvements related to Unicode and external formats:
1810 ** the Unicode character database has been upgraded to the
1811 Unicode 5.2 standard, giving names and properties to a number of new
1812 characters, and providing a few extra characters with case
1814 ** improvement: restarts for providing replacement input/output on coding
1815 errors for fd-stream external formats.
1816 ** improvement: where :<encoding> is a keyword corresponding to an
1817 external format the system supports, it is now possible to specify
1818 (:<encoding> :replacement <character>) as an external format which will
1819 automatically substitute <character> on encoding or decoding errors for
1820 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1822 ** improvement: the file streams underlying the standard streams (such as
1823 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1824 which uses the replacement mechanism to handle encoding errors,
1825 preventing various infinite error chains and unrecoverable I/O
1827 ** minor incompatible change: the utf-8 external format now correctly
1828 refuses to encode Lisp characters in the surrogate range (char-codes
1829 between #xd800 and #xdfff).
1830 ** fix a typo preventing conversion of strings into octet vectors
1831 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1833 ** fix a bug in the octet multibyte handling of decoding errors and the
1834 USE-VALUE restart. (launchpad bug lp#314939)
1835 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1836 restart on fd-stream decoding errors.
1837 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1838 error is near the end of file.
1839 ** fix a double-error case in unibyte octet conversions, when the first
1840 use of USE-VALUE is ignored.
1841 ** fix bugs in handling of undefined code points in unibyte encodings.
1842 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1843 streams after an UNREAD-CHAR.
1844 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1845 object is allocated in a boxed region of dynamic space.
1846 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1847 fork with multiple Lisp threads running is made, instead of going
1848 ahead with unpredictable consequences. (reported by Leslie Polzer)
1849 * bug fix: uses of slot accessors on specialized method parameters within
1850 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1851 error while finalizing the class. This fix may cause classes with slot
1852 accessors to be finalized later than previously. (reported by Lars Rune
1853 Nøstdal; launchpad bug lp#473699)
1854 * bug fix: restore buildability on the MIPS platform. (regression from
1855 1.0.30.38, reported by Samium Gromoff)
1856 * bug fix: inspecting closures is less likely to fail with a type error.
1857 * bug fix: no timer starvation when setting the system clock back.
1858 (launchpad bug lp#460283)
1859 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1860 standard pprint dispatch table as specified by CLHS.
1861 * bug fix: give CLISP a hint about a type declaration to enable it to build
1862 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1864 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1865 (reported by Attila Lendvai; launchpad bug lp#310132)
1866 * bug fix: distinguish in type specifiers between arrays that might be
1867 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1868 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1869 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1870 * bug fix: setting the value of a symbol-macro within a method in the
1871 presence of type declarations works properly again. (reported by Iban
1872 Hatchondo; launchpad bug lp#485019)
1874 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1875 * optimization: faster FIND and POSITION on strings of unknown element type
1876 in high SPEED policies. (thanks to Karol Swietlicki)
1877 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1879 * improvement: better error signalling for bogus parameter specializer names
1880 in DEFMETHOD forms (reported by Pluijzer)
1881 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1883 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1885 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1886 removes previous default initargs (reported by Lars Rune Nøstdal and
1888 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1889 lambda-lists. (reported by Peter Seibel)
1890 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1891 correctly when starting from an executable core without saved runtime
1892 options (reported by Faré Rideau, thanks to Zach Beane)
1893 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1894 an optimization note instead. (reported by Martin Cracauer)
1895 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1896 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1897 new process group if it doesn't need to share stdin with the sbcl
1898 process. (thanks to Leslie Polzer)
1899 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1900 (reported by Stanislaw Halik)
1902 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1903 * improvement: stack allocation is should now be possible in all nested
1904 inlining cases: failure to stack allocate when equivalent code is manually
1905 open coded is now considered a bug.
1906 * improvements related to Unicode:
1907 ** the Unicode character database has been upgraded to the
1908 Unicode 5.1 standard, giving names and properties to a number of new
1909 characters, and providing a few extra characters with case
1911 ** the system now recognizes and produces names for Unicode Hangul
1912 syllable characters.
1913 ** the EBCDIC-US external-format is now supported for octet operations
1914 (as well as for stream operations).
1915 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1916 be used to output toplevel compile-time effects into a separate .CFASL
1918 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1919 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1921 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1923 * optimization: division of floating point numbers by constants uses
1924 multiplication by reciprocal when an exact reciprocal exists.
1925 * optimization: multiplication of single- and double-floats floats by
1926 constant two has been optimized.
1927 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1928 sufficient type information is available. (thanks to Leslie Polzer)
1929 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1930 known structure objects are as efficient as defstruct generated accessors.
1931 * optimization: unused vector creation can now be optimized away.
1932 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1933 * improvement: a STYLE-WARNING is signalled when a generic function
1934 clobbers an earlier FTYPE proclamation.
1935 * improvement: the compiler is able to track the effective type of
1936 generic function across method addition and removal even in the
1937 absence of an explicit DEFGENERIC.
1938 * improvement: DESCRIBE now reports on symbols naming undefined
1939 but assumed or declared function as well.
1940 * improvement: recompilation of systems using SB-GROVEL now works
1941 (thanks to Leslie Polzer)
1942 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1943 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1945 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1946 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1947 well as user defined declaration names.
1948 ** VARIABLE-INFORMATION is now aware of alien variables.
1949 * improvement: improved address space layout on OpenBSD (thanks to Josh
1951 * improvement: pretty-printing of various Lisp forms has been improved
1952 (thanks to Tobias Rittweiler)
1953 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1954 unused were deleted in safe code. (reported by John Fremlin)
1955 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1957 * bug fix: some out-of-line array predicates were missing (reported by
1959 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1961 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1962 (thanks to Larry D'Anna)
1963 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1964 as well. (reported by Josh Elsasser)
1965 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1966 leading to possible attempts to delete the same file twice. See docstring
1967 on DELETE-FILE for details. (reported by John Fremlin)
1968 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1969 designator argument, rather than its truename. (reported by Luis
1971 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1972 information about some array types. (thanks to Luis Oliveira)
1973 * bug fix: moderately complex combinations of inline expansions could
1974 be miscompiled if the result was declared to be dynamic extent.
1975 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1976 form (+ <variable> <integer>) were miscompiled under certain
1978 * bug fix: in some cases no compiler note about failure to stack allocate
1979 was emitted, even if the objects were in fact heap allocated.
1980 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1981 allocation could cause objects users might reasonably expect to
1982 be heap allocated to be stack allocated.
1983 * bug fix: DESCRIBE signalled an error for generic functions under
1984 certain circumstances. (thanks to Leslie Polzer)
1985 * bug fix: Fixed spelling of an error message.
1987 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1988 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1989 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1990 of SB-THREAD:THREAD-ERROR-THREAD.
1991 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1992 * new feature: docstrings for local and anonymous functions are no longer
1993 discarded. (thanks to Leslie Polzer)
1994 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1995 values in other threads.
1996 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1997 about object allocation.
1998 * optimization: division of a real float by a complex float is implemented
1999 with a specialised code sequence.
2000 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2001 keywords is an order of magnitude faster.
2002 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2003 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2004 methods, and similarly for non-standard metaclass classes as long as there
2005 are no methods additional on MAKE-INSTANCE.
2006 * optimization: more efficient type-checks for FIXNUMs when the value
2007 is known to be a signed word on x86 and x86-64.
2008 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2009 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2011 * optimization: compiler is smarter about delegating argument type checks to
2013 * optimization: several character functions are now compiled somewhat more
2014 efficiently. (reported by Lynn Quam)
2015 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2016 * improvement: less unsafe constant folding in floating point arithmetic,
2017 especially for mixed complex/real -float operations.
2018 * optimization: constant double and single floats are stored in native
2019 unboxed format on x86[-64].
2020 * optimization: smarter code for arithmetic operations with constant floats,
2021 complex floats, or integers on x86[-64].
2022 * optimization: smarter code for conjugate/multiplication of float complexes
2023 and abs/negate of floats on x86-64.
2024 * optimization: more efficient complex float and real float operations on
2026 * improvement: complex float division is slightly more stable.
2027 * improvement: DESCRIBE output has been reworked to be easier to read and
2028 contains more pertinent information.
2029 * improvement: failure to provide requested stack allocation compiler notes
2030 provided in all cases (requested stack allocation not happening without a
2031 note being issued is now considered a bug.)
2032 * bug fix: SB-POSIX exports the documented types and functions
2033 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2034 types. (reported by "abhi")
2035 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2036 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2037 (thanks to Paul Khuong)
2038 * bug fix: looping around HANDLER-CASE could silently consume stack space
2039 on each iteration. (reported by "foobar")
2040 * bug fix: better error signalling when calls to functions seeking elements
2041 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2042 (reported by Tobias Rittweiler)
2043 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2044 directory components now works as it used to. (various prolems reported by
2045 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2046 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2047 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2048 * bug fix: bogus undefined variable warnings from fopcompiled references to
2049 global variables. (thanks to Lars Rune Nøstdal)
2050 * bug fix: foreign function names should now appear in backtraces on
2051 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2052 * bug fix: SETF compiler macro documentation strings are not discarded
2054 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2055 (thanks to Alex Plotnick)
2056 * bug fix: SLEEP accepts large integer arguments, truncating them to
2057 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2058 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2059 * bug fix: compiler notes for expensive slot type checks could be emitted
2060 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2062 changes in sbcl-1.0.29 relative to 1.0.28:
2063 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2064 https://bugs.launchpad.net/sbcl
2065 Bugs can be reported directly there, or by sending email to
2066 sbcl-bugs@lists.sourceforge.net
2067 (no subscription required.)
2068 * minor incompatible change: under weak type checking policy integer
2069 types are weakened less aggressively.
2070 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2071 allowed to return, which causes SBCL to quit with exit status 0. Previously
2072 if the function returned with a small integer return value, that value
2073 was accidentally reused as the exit status.
2074 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2075 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2076 :HASH-FUNCTION argument. Refer to user manual for details.
2077 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2079 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2080 microseconds since the Unix epoch on all platforms.
2081 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2082 allows the compiler to safely elide boundedness checks for special
2084 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2085 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2086 efficiency measure for threaded platforms, but also valueable in
2088 * new feature: UNC pathnames are now understood by the system on Windows.
2089 * optimization: the compiler uses a specialized version of FILL when the
2090 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2092 * optimization: accesses to potentially non-simple arrays where element type
2093 is known are 50% faster.
2094 * optimization: compiler now generates faster array typechecking code.
2095 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2097 * optimization: multidimensional array accesses in the absence of type
2098 information regarding array rank are approximately 10% faster due to
2099 open coding of ARRAY-RANK.
2100 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2101 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2103 * optimization: result of call to VECTOR can now be stack allocated.
2104 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2105 as long as the resulting array is one-dimensional and has a known
2106 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2107 length of the list matches the known length of the vector does not
2108 allocate the list as an intermediate step. Ditto for VECTOR and simple
2110 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2111 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2112 known element type, and is known to be simple and one dimensional.
2113 * improvement: SBCL now emits a compiler note where stack allocation was
2114 requested but could not be provided (not in all cases, unfortunately)
2115 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2116 * improvement: pretty-printing loop has been implemented properly. (thanks
2117 to Tobias Rittweiler)
2118 * documentation: CLOS slot typechecing policy has been documented.
2119 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2120 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2121 pointer, leading to memory faults. (thanks to Bart Botta)
2122 * bug fix: better floating point exception handling on x86/OpenBSD.
2123 (thanks to Josh Elsasser)
2124 * bug fix: exit status from QUIT when called under --script was lost
2125 (reported by Hubert Kauker)
2126 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2127 same implementation of FILL to initialize the array, even if a more
2128 efficient one was available (reported by Stas Boukarev, thanks to
2130 * bug fix: potential miscompilation of array stack allocation on x86 and
2131 x86-64. (reported by Time Tossavainen)
2132 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2133 result in their subforms being treated as top level forms. (reported by
2135 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2136 than a machine register could leave garbage in the high bits of the
2137 result register (bug 316325).
2138 * bug fix: disable address space randomization Linux/x86-64 as well,
2139 not just x86-64. (reported by Ken Olum)
2140 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2141 generate incorrect code.
2142 * bug fix: #201; type inference for CONS and ARRAY types could derive
2143 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2144 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2145 could not be assigned to or bound with PROGV. (reported by Lorenz
2147 * bug fix: the value of CL:- in the inspector was the previous expression
2148 evaluated rather than the expression being evaluated.
2149 * bug fix: constants can no longer be locally declared special.
2150 * bug fix: signals delivered to threads started from foreign land (read:
2151 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2152 thread by blocking all signals and resignalling.
2153 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2154 from :INITFORM, if any.
2156 changes in sbcl-1.0.28 relative to 1.0.27:
2157 * a number of bugs in cross-compilation have been fixed, with the ultimate
2158 result that building under (at least) clisp should be much more reliable.
2159 * minor incompatible changes: echo-streams now propagate unread-char to the
2160 underlying input stream, and no longer permit unreading more than one
2162 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2163 frames, allowing for instance more reliable backtraces.
2164 * improvement: the debugger REPL can now reference lexical variables
2165 by name directly for code compiled with (DEBUG 3).
2166 * improvement: errors from malformed declarations now have better source
2167 paths associated with them. (thanks to Tobias Rittweiler)
2168 * optimization: faster local calls on x86/x86-64
2169 * bug fix: some error messages for out-of-bound array indexes confused the
2170 index and the bound. (thanks to Stas Boukarev)
2171 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2173 * bug fix: running regressions tests in shells without OSTYPE set now works.
2174 (reported by Harald Hanche-Olsen)
2175 * bug fix: more robust static space exhaustion signalling from
2176 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2177 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2178 docstring away instead of storing it under names such as (LAMBDA (X)).
2179 (reported by Leslie Polzer)
2180 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2181 (thanks to Ole Arndt for the patch)
2182 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2183 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2184 potentially-invalid effective methods in its cache.
2185 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2186 instances as well (thanks to Paul Khuong)
2187 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2188 SB-POSIX:WAITPID and their C equivalents.
2189 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2191 changes in sbcl-1.0.27 relative to 1.0.26:
2192 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2193 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2194 * improvement: the system either recovers from stack exhaustion or dies
2195 properly as opposed to leaving the user uncertain of whether the handler
2196 trampled on some random memory next to the stack or having to rely on
2197 --lose-on-corruption (which is still a good idea to use in production
2198 because stack exhaustion can happen in signal handlers which will likely
2200 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2201 1.0.25.37, reported by Harald Hanche-Olsen)
2202 * bug fix: work around signal delivery bug in darwin (regression from
2203 1.0.25.44, reported by Sidney Markowitz)
2204 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2206 changes in sbcl-1.0.26 relative to 1.0.25:
2207 * incompatible change: an interruption (be it a function passed to
2208 INTERRUPT-THREAD or a timer function) runs in an environment where
2209 interrupts can be enabled. The interruption can use
2210 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2211 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2212 potentially running out of stack. Keep in mind that in the absence
2213 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2214 acquiring a lock can enable interrupts.
2215 * incompatible change: GC-OFF and GC-ON are removed, as they were
2216 always unsafe. Use WITHOUT-GCING instead.
2217 * new feature: runtime option --disable-ldb
2218 * new feature: runtime option --lose-on-corruption to die at the
2219 slightest hint of possibly non-recoverable errors: running out of
2220 memory, stack, alien stack, binding stack, encountering a memory
2221 fault, etc. In the absence of --lose-on-corruption a warning is
2223 * enhancement: detect binding stack exhaustion
2224 * enhancement: detect alien stack exhaustion on x86/x86-64
2225 * improvement: generally more stable and reliable interrupt handling
2226 * improvement: there is a per thread interruption queue,
2227 interruptions are executed in order of arrival
2228 * improvement: a repeating timer reschedules itself when the it has
2229 finished, but expiration times are spaced equally. If an
2230 expiration time is in the past it will trigger after a short grace
2231 period that may give a chance to other things to run.
2232 * optimization: slightly faster gc on multithreaded builds
2233 * optimization: faster WITHOUT-GCING
2234 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2235 important locks so that the debugger/handler doesn't produce
2236 recursive errors or deadlock.
2237 * bug fix: real-time signals are not used anymore, so no more
2238 hanging when the system wide real-time signal queue gets full.
2239 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2241 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2242 * bug fix: fix random memory faults related to interrupts on alpha
2243 * bug fix: fix random memory faults related to interrupts on sparc
2244 * bug fix: fix deadlocks related to starting threads
2245 * bug fix: fix deadlines on locks on futex platforms
2246 * bug fix: restore errno in signal handlers
2247 * bug fix: fix deadlocks related to hash tables
2248 * bug fix: fix deadlocks in pcl
2250 changes in sbcl-1.0.25 relative to 1.0.24:
2251 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2252 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2253 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2254 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2255 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2256 better name and does not return values so stale on multiprocessor systems.
2257 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2259 * improvement: unithread builds keep track of MUTEX-VALUE.
2260 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2261 stream anymore making it thread safe to have a concurrent reader and
2262 a writer, for instance, in a pipe.
2263 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2264 arguments, making compiler-macros for SETF-functions able to inspect
2265 their constant arguments.
2266 * improvement: COMPILE-FILE reports times with millisecond accuracy
2267 (thanks to Luis Oliveira)
2268 * optimization: CHAR-CODE type derivation has been improved, making
2269 TYPEP elimination on subtypes of CHARACTER work better. (reported
2270 by Tobias Rittweiler, patch by Paul Khuong)
2271 * bug fix: setting alien structure fields of type struct by value now
2272 computes the right offset for the memory copy.
2273 * bug fix: compilation problem involving inlined calls to aliens with
2274 result type VOID. (reported by Ken Olum)
2275 * bug fix: #235a; sequential inline expasion in different policies no
2276 longer reuses the functional from the previous expansion site.
2277 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2278 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2279 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2280 cause an implied type redefinition. Regression from 1.0.21.29.
2281 * bug fix: sign-extension of small signed return values now works with C
2282 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2283 * improvements to the Windows port:
2284 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2285 Westfold, thanks to Rudi Schlatte)
2287 changes in sbcl-1.0.24 relative to 1.0.23:
2288 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2289 vector of a multidimensional SIMPLE-ARRAY.
2290 * new feature: the system now signals a continuable error if standard
2291 readtable modification is attempted. (thanks to Tobias Rittweiler)
2292 * new feature: DIRECTORY has been extended with a non-standard keyword
2293 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2294 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2295 has been robustified and documented better. (thanks to Robert Goldman)
2296 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2297 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2298 * tradeoff: constant FORMAT control strings are now compiled unless
2299 SPACE > SPEED (previously only when SPEED > SPACE.)
2300 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2302 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2304 * bug fix: lexical type declarations are now correctly reported by
2305 SB-CLTL2. (reported by Larry D'Anna)
2306 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2307 using UTF-8 as external format. (thanks to Luis Oliveira)
2308 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2309 are signalled correctly. (thanks to Stas Boukarev)
2310 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2311 designator. (thanks to Tobias Rittweiler)
2312 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2313 designator, and returns T instead of the function. (thanks to
2315 * bug fix: direct superclasses of STANDARD-CLASS and
2316 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2317 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2318 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2319 when no class with the named slot yet exists no longer causes a
2320 compile-time style-warning.
2321 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2322 in safe code. (reported by Didier Verna)
2323 * bug fix: #430; nested structure constructors can stack allocate.
2324 * bug fix: on some 64-bit platforms dynamic space size was truncated
2325 to #xffff0000 bytes. (reported by Benjamin Lambert)
2326 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2327 REPL unusable. (reported by Daniel Herring)
2328 * bug fix: return values of READ-SEQUENCE did not take :START into
2329 account on file streams, regressions since 1.0.12.22. (reported by
2330 Thomas Russ, patch by Paul Khuong)
2331 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2332 method specializer used to confuse permuation vector optimization.
2333 * bug fix: system inserted bogus implicit type declarations for local
2334 special variables in DEFMETHOD bodies.
2335 * bug fix: #354; duplicated frames in backtraces due to
2336 non-tail-call-optimized XEPs to functions with return type NIL
2338 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2339 initializes structure object slots according to DEFSTRUCT initforms,
2340 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2341 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2342 (reported by Bruno Haible and Stephen Wilson)
2343 * bug fix: #395; fill-pointer output streams used now support
2344 element-type BASE-CHAR as well.
2345 * bug fix: compiler error when attempting to derive return value of
2346 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2348 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2350 * bug fix: Mac OS X binaries should now be portable between Leopard
2353 changes in sbcl-1.0.23 relative to 1.0.22:
2354 * enhancement: when disassembling method functions, disassembly
2355 for the associated fast function is also produced.
2356 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2358 * optimization: printing with *PRINT-PRETTY* true is now more
2359 efficient as long as the object being printed doesn't require
2360 special handling by the pretty printer.
2361 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2362 now interact correctly with type declarations.
2363 * partial bug fix: PCL detects infinite recursion during wrapper
2364 validation. (thanks to Attila Lendvai)
2365 * bug fix: #426; nested function calls are inlined properly.
2366 Previously if FOO was an inline function, in calls of the form
2367 (FOO (FOO ...)) the outer call was not inlined.
2368 * bug fix: long long arguments passed in registers to alien
2369 functions on PowerPC Linux and NetBSD are now handled correctly
2370 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2372 changes in sbcl-1.0.22 relative to 1.0.21:
2373 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2374 for the shared object in the current directory, but passes the native
2375 namestring of the designated pathname to the operation system's shared
2376 object loading function as-it.
2377 * minor incompatible change: --disable-debugger toplevel option now takes
2378 effect before processing of initialization files and --eval or --load
2380 * new feature: new commandline argument: --script, which supports
2381 shebang lines. See documentation for details. (based on work by
2383 * new feature: SAVE-LISP-AND-DIE can save current values of
2384 --dynamic-space-size and --control-stack-size in the executable core,
2385 causing it to skip normal runtime option processing. See documentation
2386 for details. (thanks to Zach Beane)
2387 * enhancement: inoccous calls to EVAL or generic functions dispatching
2388 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2389 * enhancement: the system no longer resignals errors from --load and
2390 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2391 associated with the original error to be lost. (thanks to Ariel
2393 * enhancement: :DONT-SAVE keyword argument has been added to
2394 LOAD-SHARED-OBJECT for controlling interaction with
2395 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2396 the effects of an earlier LOAD-SHARED-OBJECT call.
2397 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2398 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2399 provided. (reported by Cedric St-Jean)
2400 * bug fix: circularity handling in the reader did not treat raw
2401 structure slots correctly. (reported by Cedric St-Jean)
2402 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2403 file descriptors when there were none.
2404 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2405 was broken. (reporteed by Willem Broekema)
2406 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2407 pathnames without a directory.
2408 * bug fix: COMPILE-FILE did not warn about undefined variable
2409 references at toplevel, and LOAD of the resulting fasl did
2410 not signal an error.
2411 * bug fix: functions with non-required arguments used to end up with
2412 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2413 * bug fix: redefining a function with non-required arguments didn't
2414 update the system's knowledge about its call signature properly.
2415 * bug fix: fixed #431; incompatible alien record type redefinitions
2416 are detected and handled. (reported by Neil Haven)
2417 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2418 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2420 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2421 after alien stack frames.
2422 * bug fix: strings passed to mk{s,d}temp lacked null termination
2424 changes in sbcl-1.0.21 relative to 1.0.20:
2425 * new feature: the compiler is able to track the effective type of a
2426 generic function across method addition and removal.
2427 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2428 appropriately typed structure slots without locking.
2429 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2430 information like those gathered by TIME using a programming-friendly
2432 * new feature: TIME reports time taken even if the form performs a
2433 non-local transfer of control.
2434 * enhancement: reduced conservativism on GENCGC platforms: on
2435 average 45% less pages pinned (measured from SBCL self build).
2436 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2437 mutate constant symbols or violate declaimed type of the symbol.
2438 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2439 sleeping on the semaphore in heavily contested semaphores.
2440 * bug fix: semaphores and condition variables were not interrupt
2442 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2443 owned by other threads anymore.
2444 * bug fix: FIND on lists called KEY outside the specified
2445 subsequence. (reported by budden)
2446 * bug fix: LOG doesn't use single-float intermediate results when
2447 given mixed integer and double-float arguments, leading to better
2448 precision. (reported by Bob Felts)
2449 * bug fix: LOG with base zero returned values of inconsistent type.
2451 changes in sbcl-1.0.20 relative to 1.0.19:
2452 * minor incompatible change: OPTIMIZE qualities
2453 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2454 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2455 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2456 * documentation: some slot access efficiency guidelines have been
2457 added to the user manual.
2458 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2459 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2460 as ASSOC and MEMEBER.
2461 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2462 to more efficient EQ-comparison versions more often.
2463 * optimization: enhanced derivation of DOLIST iteration variable type
2465 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2467 * optimization: runtime lookup of function definitions can be
2468 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2469 * optimization: compiler is able to derive the return type of
2470 (AREF (THE STRING X) Y) as being CHARACTER.
2471 * optimization: CLRHASH on empty hash-tables no longer does pointless
2472 work. (thanks to Alec Berryman)
2473 * optimization: REPLACE deftransforms don't punt when :START1 or
2475 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2476 no longer emits a code deletion note. (reported by Andrew
2478 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2479 functions with an odd number of &OPTIONAL arguments, a &REST
2480 argument, and one or more &KEY arguments at the call site.
2481 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2482 arguments appeared at call sites as well.
2483 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2484 READ-LINE &co can no longer read from them afterwards. (reported
2486 * bug fix: fixed #427: unused local aliens no longer cause compiler
2487 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2489 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2490 alien-stack leakage. (reported by Andy Hefner)
2491 * bug fix: PROGV signals an error when an attempt to violate declared
2492 type of a variable or bind a constant is made.
2493 * bug fix: SET signals an error when an attempt to violate declared
2494 type of a variable is made.
2495 * bug fix: restart computation during the execution of a restart
2496 test function no longer causes infinite recursion. (reported by
2498 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2499 signals an error. (thanks to Pierre Mai)
2500 * bug fix: EXPORT left symbol unexported in conflict situations.
2501 (thanks to Michael Weber)
2502 * bug fix: correctly handle name conflicts involving CL:NIL.
2503 (thanks to Michael Weber)
2504 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2505 conflicts arising from USEing package with conflicting symbols
2506 correctly. (thanks to Michael Weber)
2508 changes in sbcl-1.0.19 relative to 1.0.18:
2509 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2510 warnings that go otherwise unhandled will be muffled if they are
2511 of the type that's the value of this variable.
2512 * optimization: stack allocation is slightly more efficient on x86
2514 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2515 where a raw slot always is initialized using the initform whose
2516 type is not know sufficiently well a compile-time are now compiled
2517 correctly. (reported by John Morrison)
2518 * bug fix: compiler no longer makes erronous assumptions in the
2519 presence of non-foldable SATISFIES types.
2520 * bug fix: stack analysis missed cleanups of dynamic-extent
2521 arguments in non-let-converted calls to local functions.
2522 * improvements to the Windows port:
2523 ** adjusted address spaces for building on both Win32 and
2524 Win64. (thanks for John Connors)
2525 * fixed some bugs revealed by Paul Dietz' test suite:
2526 ** interval arithmetic during type derivation used inexact integer
2527 to single-float coercions.
2528 ** arithmetic operations involving large integers and single
2529 floats give the same results in compiled and interpreted code.
2530 ** deriving the result type of COERCE no longer signals an error
2531 if the derived type of the second argument is a MEMBER type
2532 containing invalid type specifiers.
2533 ** ADJOIN with constant NIL as second argument works correctly.
2534 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2536 changes in sbcl-1.0.18 relative to 1.0.17:
2537 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2538 profiles only the current thread.
2539 * minor incompatible change: changes to SYMBOL-VALUE of constants
2540 defined with DEFCONSTANT now signal an error.
2541 * enhancement: SB-SPROF now has support for wallclock profiling,
2542 and is also able to profile specific threads. REPORT output
2543 has also additional sorting options.
2544 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2546 * optimization: structure allocation has been improved
2547 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2548 ** out of line constructors are ~10% faster.
2549 ** inline constructors are ~15% faster.
2550 ** inline constructors are capable of dynamic extent allocation
2551 (generally on x86 and x86-64, in some cases on other platforms
2553 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2555 * optimization: file compiler is now able to coalesce non-circular
2556 lists, non-base strings, and bit-vectors. Additionally, constants
2557 are never referenced through SYMBOL-VALUE at runtime.
2558 * optimization: code defining methods on PRINT-OBJECT (and other
2559 generic functions in the COMMON-LISP package) now loads faster.
2560 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2562 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2563 fasl is now deleted. (reported by Attila Lendvai)
2564 * bug fix: READ-LINE always returned NIL for the last line in files.
2565 (reported by Yoshinori Tahara)
2566 * bug fix: more accurate disassembly annotations of foreign function
2567 calls. (thanks to Andy Hefner)
2568 * bug fix: trimming non-simple strings and non-string string
2569 designators when the there is nothing to trim works properly.
2570 (thanks to James Knight)
2571 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2572 (thanks to Travis Cross)
2573 * fixed some bugs revealed by Paul Dietz' test suite:
2574 ** NIL is a valid function name (regression at 1.0.13.38)
2575 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2576 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2577 fill pointers properly (regression at 1.0.12.23)
2578 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2579 displacement indices properly (regression at 1.0.12.23)
2581 changes in sbcl-1.0.17 relative to 1.0.16:
2582 * temporary regression: user code can no longer allocate closure
2583 variable storage on stack, due to bug 419 without explicitly
2584 requesting it. Please consult sbcl-devel for advice if you need to
2585 use this feature in the meanwhile.
2586 * new feature: runtime argument --control-stack-size can be used to
2587 adjust thread default control stack size.
2588 * enhancement: improved TIME output
2589 ** all times are reported using the measured accuracy (milliseconds
2590 for real and GC times, microseconds for everything else.)
2591 ** processor cycle counts on x86 and x86-64.
2592 ** interpreted forms are counted for both evaluator modes.
2593 ** number of lambdas converted by the compiler is reported.
2594 ** CPU percentage report (computed from real and total run time.)
2595 ** more comprehensive run time reporting, using a condenced format
2596 ** interperted form, lambda, and page fault counts are omitted
2598 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2600 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2601 * optimization: two argument forms of LAST are upto ~10% faster
2602 in normal SPEED policies.
2603 * optimization: NCONC no longer needs to heap cons its &REST list
2604 in normal SPEED policies.
2605 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2606 to Sidney Markowitz)
2607 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2608 regression since 1.0.9.1. (thanks to Eric Marsden)
2609 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2610 since 1.0.15.36. (thanks to Paul Khuong)
2611 * bug fix: LAST when always returned the whole list when given a bignum
2612 as the second argument.
2613 * bug fix: dynamic extent allocation of nested lists and vectors
2614 could leak to otherwise accessible parts.
2615 * bug fix: invalid optimization of heap-allocated alien variable
2617 * bug fix: fasl header checking is less vulnerable to different
2618 platform word lengths.
2619 * bug fix: more correct assembler syntax for GNU binutils
2620 2.18.50.0.4 support. (thanks to Marijn Schouten)
2621 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2623 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2624 declarations) successfully. (reported by Attila Lendvai)
2626 changes in sbcl-1.0.16 relative to 1.0.15:
2627 * minor incompatible change: revert the changes to sb-posix's error
2628 signaling added in 1.0.14.
2629 * minor incompatible change: change PROBE-FILE back to returning
2630 NIL whenever we can't get a truename, as was the case before 1.0.14.
2631 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2632 inherits from ERROR instead of just CONDITION.
2633 * new feature: SB-INTROSPECT can provide source locations for instances
2634 as well. (thanks to Tobias Rittweiler)
2635 * optimization: binding special variables now generates smaller code
2636 on threaded platforms.
2637 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2638 and cases where no :TEST is given but the compiler can infer that
2639 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2640 * optimization: better LOGNOT on fixnums.
2641 * optimization: modular arithmetic for a particular requested width
2642 is implemented using a tagged representation unless a better
2643 representation is available.
2644 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2645 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2646 for wellformedness and returns a specialized vector. (reported by
2647 Francois-Rene Rideau)
2648 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2649 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2650 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2651 unscheduling timer at the same time as another timer fires.
2652 * bug fix: don't reschedule timers for dead threads.
2653 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2654 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2655 bogus errors if select() was interrupted.
2656 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2658 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2659 * enhancement: cleaner backtraces for interactive interrupts, as
2660 well as other cases where the interesting frames used to be
2661 obscured by interrupt handling frames.
2662 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2663 now supported, and tracing a whole package using (TRACE "FOO") now
2664 traces SETF-functions as well.
2665 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2666 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2667 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2668 * unreadably printed representation of hash-tables now includes
2670 * bug fix: partially fixed #188: type propagation from assignments
2671 is now more efficient.
2672 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2673 'DOUBLE-FLOAT) are not flushable.
2674 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2675 full address of the object, and none of the tag bits.
2676 * bug fix: readably printing hash-tables now respects other printer
2677 control variables. (reported by Cedric St-Jean)
2678 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2679 keyword with MAKE-HASH-TABLE.
2680 * bug fix: export SB-POSIX:MKSTEMP.
2681 * bug fix: SORT was not interrupt safe.
2682 * bug fix: XREF accounts for the last node of each basic-block as
2684 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2685 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2686 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2687 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2688 create obsolete instances in the case of redefinition or
2689 obsoletion of a superclass. (thanks to Andy Hefner)
2690 * bug fix: Support for the Alpha architecture has been revived; it had
2691 suffered somewhat from lack of maintenance since sbcl-1.0.
2692 * improvements to the Windows port:
2693 ** The system detects the codepage to use at startup, instead of
2694 using the value from the saved core. (thanks to Kei Suzuki)
2696 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2697 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2698 (see documentation for details.)
2699 * revived support for OpenBSD (contributed by Josh Elsasser)
2700 * partially fixed bug #108: ROOM no longer suffers from occasional
2701 (AVER (SAP= CURRENT END)) failures.
2702 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2703 bodies no longer cause a WARNING to be signalled. (reported by
2705 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2706 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2707 the bug in TRUNCATE.) (reported by Michael Weber)
2708 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2709 no samples. (reported by Andy Hefner)
2710 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2711 no longer appear as (NIL ...) frames in backtraces.
2712 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2713 is now actually exported from SB-EXT as documented. (reported by
2715 * bug fix: sb-aclrepl now correctly understands how to inspect
2716 single-floats on 64-bit platforms where single-floats are not boxed.
2717 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2718 yet been finalized. (reported by Levente Meszaros)
2719 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2720 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2721 SBCL-specific optimize qualities.
2723 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2724 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2725 an executable in the search path, and does so in the child
2726 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2727 been removed; it can be found in the CVS history, for somebody who
2728 needs that search behavior (see the manual).
2729 * minor incompatible change: compiler policy re. weakening type
2730 checks has changed: now type checks are weakened only if SAFETY < 2
2732 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2733 unparsing of directory pathnames as files. Analogously,
2734 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2735 filename to parse into a directory pathname.
2736 * enhancement: implicit generic function creation now signals a
2737 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2738 users can bind handlers for and muffle around calls to LOAD.
2739 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2740 to be used (using the default stream external format), and allows
2741 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2742 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2743 strings and vectors whose element-type or simplicity is not fully
2744 known at compile-time.
2745 * optimization: STRING-TRIM and related functions no longer allocate
2746 a new string when no trimming needs to be performed. These functions
2747 are also faster than before when the input string has been declared
2749 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2750 * optimization: READ-LINE is significantly faster for files containing
2752 * optimization: non-open coded uses of character comparison operators
2753 (e.g. char=) no longer cons when called with more than one parameter
2754 on platforms supporting dynamic-extent allocation.
2755 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2756 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2757 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2759 * bug fix: some sequence functions elided bounds checking when
2761 * bug fix: too liberal weakening of union-type checks when SPEED >
2763 * bug fix: more bogus fixnum declarations in ROOM implementation
2766 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2767 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2768 :SYNCHRONIZED argument, which makes the hash-table safe for
2769 concurrent accesses (but not iteration.) See also:
2770 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2771 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2772 * optimization: CONCATENATE on strings is an order of magnitude faster
2773 in code compiled with (> SPEED SPACE).
2774 * optimization: SUBSEQ is ~50% faster on lists.
2775 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2776 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2777 END is smaller then START.
2778 * bug fix: SB-PROFILE will no longer report extra consing for nested
2779 calls to profiled functions.
2780 * bug fix: ROOM implementation had bogus fixnum declarations which
2781 could cause type-errors when calling ROOM on large images.
2782 * bug fix: if file compilation is aborted, the partial fasl is now
2783 deleted, and COMPILE-FILE returns NIL as the primary value.
2784 * bug fix: number of thread safety issues relating to SBCL's internal
2785 hash-table usage have been fixed.
2786 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2787 be returned from its body when the values were being returned
2788 using unknown-values return convection and the W-P-O was wrapped
2789 inside an UNWIND-PROTECT.
2790 * bug fix: sb-posix should now compile again under Windows, enabling
2791 slime to work again.
2793 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2794 * incompatible change: hash-table accessor functions are no longer
2795 automatically protected by locks. Concurrent accesses on the same hash-table
2796 from multiple threads can give inconsistent results or even corrupt the
2797 hash-table completely. Multi-threaded applications should do their own
2798 locking at the correct granularity. In the current implementation it is
2799 still safe to have multiple readers access the same table, but it's not
2800 guaranteed that this property will be maintained in future releases.
2801 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2802 and will signal an error at runtime.
2803 * enhancement: SB-THREAD package now exports a semaphore interface.
2804 * enhancement: CONS can now stack-allocate on x86 and
2805 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2807 * enhancement: nested lists can now be stack allocated on
2808 platforms providing stack allocation support.
2809 * enhancement: dynamic-extent support has been extended to support
2810 cases where there are multiple possible sources for the stack
2812 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2813 if the mutex is uncontested on Linux.
2814 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2815 as specified by the CLHS. (thanks to Tobias Rittweiler)
2816 * bug fix: NaN comparison now works on x86-64.
2817 * bug fix: CLOSE :ABORT T on a stream with pending output now
2819 * bug fix: instances of non-standard metaclasses using standard
2820 instance structure protocol sometimes missed the slot type checks
2822 * bug fix: known functions can be inlined in high-debug code.
2824 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2825 * minor incompatible change: the MSI installer on Windows no longer
2826 associates .lisp and .fasl files with the installed SBCL.
2827 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2828 on Windows. (thanks to Luis Oliviera)
2829 * new feature: SB-CLTL2 contrib module now implements
2830 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2831 * optimization: scavenging weak pointers is now more efficient,
2832 requiring O(1) instead of O(N) per weak pointer to identify
2833 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2834 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2835 method bodies using constant slot-names when the first argument is
2836 a specializer parameter for the method.
2837 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2838 names, when the class of the instance is a direct instance
2839 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2840 as slow as the constant slot-name case.)
2841 * optimization: member type construction is now O(N) instead
2843 * optimization: UNION and NUNION are now O(N+M) for large
2844 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2846 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2847 now more readable in environments like Slime which display it.
2848 (thanks to Tobias C. Rittweiler)
2849 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2850 was able to infer the correct argument type for the object on which
2851 the CAS operation was being performed.
2852 * bug fix: copy propagation interfered with parallel assignment
2853 semantics in local calls. (reported by Paul Khuong)
2854 * bug fix: the signed modular fixnum shift compiled to wrong code on
2855 x86 and x86-64. (spotted by a slight modification to some of
2858 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2859 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2860 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2861 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2863 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2864 and generic function now print the object identity for anonymous
2865 instances. (thanks to Attila Lendvai)
2866 * enhancement: as an extension to MOP, SBCL now supports SETF of
2867 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2868 (thanks to Attila Lendvai)
2869 * enhancement: sb-cover has an alternate annotation mode which puts
2870 the form annotations at the car of the form, instead of annotating
2871 it completely. The benefit of this mode is that it shows better
2872 which forms were instrumented by the compiler.
2873 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2874 by printer control variables. (reported by Dan Corkill)
2875 * bug fix: system leaked memory when delayed output was performed by
2876 the OS in smaller chunks then expected. (thanks to David Smith)
2877 * bug fix: system leaked memory when file streams were not closed
2879 * bug fix: large objects written to slow streams that were modified
2880 after the write could end up with the modified state written to
2881 the underlying file descriptor.
2882 * bug fix: multiple threads operating in parallel on the same stream
2883 could cause buffer-overflows.
2884 * bug fix: source location information is stored correctly
2885 (broken since 1.0.6). This bug would generally show up as the
2886 Slime debugger highlighting the wrong form when the sldb-show-source
2888 * bug fix: Branch forms are again annotated as branches in the sb-cover
2890 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2891 on x86-64. (reported by Gregory Vanuxem)
2892 * bug fix: EQUALP could return wrong results for structures with raw
2893 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2894 word). (reported by Vjacheslav Fyodorov)
2895 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2898 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2899 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2900 atomic compare-and-swap operations on threaded platforms.
2901 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2902 allows assigning a global minimum value to optimization qualities
2903 (overriding proclamations and declarations).
2904 * enhancement: closed over variables can be stack-allocated on x86
2906 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2908 * optimization: slot definition lookup is now O(1). This speeds up
2909 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2910 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2911 * optimization: ASSOC and MEMBER can now be open-coded for all
2912 combinations of keyword arguments when second argument is constant
2913 and SPEED >= SPACE. In other cases a specialized version is
2915 * bug fix: using obsoleted structure instances with TYPEP and
2916 generic functions now signals a sensible error.
2917 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2918 (reported by Kristoffer Kvello)
2919 * bug fix: backtrace construction is now more careful when making
2920 lisp-objects from pointers on the stack, to avoid creating bogus
2921 objects that can be seen by the GC.
2922 * bug fix: defaulting of values in contexts expecting more than 7
2923 variables now works on x86-64. (reported by Christopher Laux)
2924 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2926 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2927 as the property-list of a symbol.
2928 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2929 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2930 situations requested, are once again file-compileable. (reported
2933 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2934 * MOP improvement: support for user-defined subclasses of
2935 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2936 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2937 the expansion of DEFMETHOD, is responsible for generating a form
2938 which creates a list of specializers when evaluated. Additional
2939 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2940 debugging and introspective support.
2941 * minor incompatible change: the (unsupported) spinlock interface
2942 has changed: free spinlock now has the value NIL, and a held spinlock
2943 has the owning thread as its value.
2944 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2945 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2947 * enhancement: name of a socket-stream is now "a socket" instead of
2948 "a constant string".
2949 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2950 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2951 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2952 for generic functions. (Thanks to Tobias C. Rittweiler)
2953 * optimization: bignum printing speed has been improved by 20-40%
2954 (depending on the bignum size.)
2955 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2957 * bug fix: the cache used by the CLOS to store precomputed effective
2958 methods, slot offsets, and constant return values is now thread and
2960 * bug fix: generic function dispatch function updating is now thread
2961 and interrupt safe (in the sense that the known issues have been
2963 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2964 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2965 * bug fix: asdf systems with dependencies to the SB-POSIX or
2966 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2967 * bug fix: interrupt safety of applicable method computation has been
2970 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2971 * new contrib: sb-cover, an experimental code coverage tool, is included
2972 as a contrib module.
2973 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2974 significantly faster.
2975 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2976 produce more efficient code on x86-64 if the compiler can determine
2977 that (+ INDEX <constant>) does not require a bounds check and FOO
2978 has an element type at least 8 bits wide.
2979 * enhancement: a new, experimental synchronous timeout facility is
2980 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2981 * enhancement: when a symbol name conflict error arises, the
2982 conflicting symbols are always printed with a package prefix.
2983 (thanks to Kevin Reid)
2984 * enhancement: stepping is now once again supported on the SPARC and
2985 MIPS platforms. (It is also now more likely to work on CheneyGC
2987 * enhancement: sb-sprof can now also track and report accurate call
2989 * bug fixes: the treatment of non-standard subclasses of
2990 SB-MOP:SPECIALIZER is more correct.
2991 * incompatible change: PURIFY no longer copies the data from the
2992 dynamic space into the static and read-only spaces on platforms
2993 that use the generational garbage collector
2994 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2996 * bug fix: GC race condition occasionally resulting in crashes with
2997 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2999 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3001 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3002 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3003 * bug fix: an asynchronous interrupt could previously leave the
3004 system running with GC inhibited.
3005 * bug fix: a DECLARE form evaluated at top-level now causes an error
3006 rather than silently (or verbosely) returning NIL.
3007 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3008 result in a error being signalled due to source form lookup errors.
3009 (reported by Peter Graves)
3011 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3012 * incompatible change: removed writer methods for host-ent-name,
3013 host-ent-addresses -- changing the values did not update the DNS
3015 * minor incompatible change: changed experimental JOIN-THREAD interface
3016 * documentation: the manual now lists reader and writer methods
3017 in class slot documentation sections. (thanks to Richard M Kreuter)
3018 * documentation: unwinding from asyncronous events has been
3019 documented as unsafe.
3020 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3021 in multithreaded application code.
3022 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3023 platforms. (thanks to James Anderson for the optimization hint)
3024 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3026 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3027 variants no longer cons.
3028 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3029 their NOT- variants no longer cons.
3030 * optimization: EQUAL hash tables no longer use SXHASH for objects
3031 of all data types, but instead use an EQL hash for types for which
3032 EQUAL is the same as EQL.
3033 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3034 are significantly faster.
3035 * optimization: new STRING-OUTPUT-STREAM implementation is much
3036 faster for large outputs and conses 30% less on average.
3037 * enhancement: XREF information is now collected for references made
3038 to global variables using SYMBOL-VALUE and a constant argument.
3039 * enhancement: SIGINT now causes a specific condition
3040 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3041 * bug fix: FILE-POSITION used to signal an error in some cases where
3042 ANSI requires it to return NIL.
3043 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3044 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3045 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3047 * bug fix: bad type declaration in the CLOS implementation has
3048 been fixed. (reported by James Anderson)
3049 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3050 (thanks to Lutz Euler)
3051 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3052 required by the CLHS. (reported by Samium Gromoff)
3053 * bug fix: dead unbound variable references now signal an error.
3054 (reported by Marco Monteiro)
3055 * bug fix: / with an unused value was being deleted in safe code.
3056 (thanks to Marco Monteiro and Kevin Reid)
3057 * bug fix: number of characters that can be written onto a single
3058 line in a file is unlimited.
3059 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3060 been fixed by inhibiting interrupts for when GC is disabled.
3061 * bug fix: some interrupt safety issues with GETHASH, (SETF
3062 GETHASH), CLRHASH and REMHASH have been fixed.
3063 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3064 specifier no longer causes infinite recursion.
3065 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3066 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3067 * bug fix: an &environment argument with the correct variable information
3068 is passed to macros that are expanded during byte compilation.
3069 (reported by Samium Gromoff)
3070 * bug fix: a logic error was causing the hash function for bignums to
3071 have excessive amounts of collisions. (reported by Faré Rideau)
3072 * bug fix: modifying the contents of an array could change the return
3073 value of SXHASH on that array, which is only allowed for strings
3074 and bit vectors. (bug introduced in 0.9.16)
3075 * improvement: the x86-64/darwin port now passes all tests (except
3076 for the debugger tests) but should still be considered
3077 experimental until this is fixed.
3078 * improvement: a style-warning is signaled for CASE (etc) clauses with
3079 duplicate keys. (thanks to Kevin Reid)
3080 * improvement: macos/x86 and macos/x86-64 now use mach exception
3081 handlers for dealing with illegal instructions (for trapping and
3082 error handling) and memory protection violations (for GC).
3084 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3085 * new platform: experimental support for x86-64/darwin (MacOS).
3086 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3087 and getnameinfo sockets functions are used instead of gethostbyaddr
3088 and gethostbyname, on platforms where the newer functions are available.
3089 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3091 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3092 don't print the startup banner, but behave as if --noinform was passed
3093 as a command line argument. (thanks to Kevin Reid)
3094 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3095 * optimization: code using alien values with undeclared types is much faster.
3096 * optimization: the compiler is now able to open code SEARCH in more cases.
3097 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3098 * bug fix: using standardized COMMON-LISP special variables as loop
3099 variables no longer signals bogus package lock violations. (reported
3101 * bug fix: declaring local loop variables to be of a range-limited type
3102 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3103 (reported by Andras Simon)
3104 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3105 bugs remain on x86-64.)
3106 * bug fix: the #= and ## reader macros now interact reasonably with
3107 funcallable instances.
3108 * bug fix: type-checks for function arguments were compiled using the
3109 compiler policy settings of the wrong lexical environment (in 1.0.2
3111 * bug fix: SHADOW accepts characters as string designators, as required
3112 by the spec (thanks to Eric Marsden)
3113 * bug fix: fixed GC safety issues when foreign functions are called with
3114 non-base strings as arguments
3115 * bug fix: more consistent error output for fatal-compiler-warnings, like
3117 * bug fix: functions with proper names were showing up as NIL in
3118 backtraces (reported by Edi Weitz, regression in 1.0.2)
3120 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3121 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3122 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3123 produce more efficient code on the x86 if the compiler can determine
3124 that (+ INDEX <constant>) does not require a bounds check and FOO
3125 has an element type at least 8 bits wide.
3126 * bug fix: references to undefined variables are handled the same way
3127 in toplevel forms as in the normal compiler
3128 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3130 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3131 (thanks to Jon Buller)
3132 * improvement: faster compilation times for complex functions
3133 * improvement: added readlink support to SB-POSIX (thanks to Richard
3136 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3137 * improvement: experimental support for mach exception handling on
3138 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3140 * improvement: support for GBK external format.
3141 (thanks to Chun Tian (binghe))
3142 * improvement: the debugger now displays variables that have been closed
3143 over, in code compiled with (DEBUG 2) or higher
3144 * improvement: support for executable cores on NetBSD (thanks to
3146 * new feature: added a RESTART-FRAME debugger command
3147 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3148 be used to provide an implementation for FILE-POSITION on Gray streams
3149 (thanks to Eric Marsden)
3150 * new feature: add syslog, openlog and closelog support to SB-POSIX
3151 (thanks to Richard Kreuter)
3152 * optimization: the function call overhead in code compiled with
3153 a high DEBUG optimization setting is significantly
3154 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3155 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3156 (thanks to Tony Martinez)
3157 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3158 evaluated once (reported by Kevin Reid)
3159 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3160 works again (thanks to Kilian Sprotte)
3161 * bug fix: an error is signaled for tagbodies with duplicate tags
3162 (thanks to Stephen Wilson)
3163 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3164 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3165 stack frames from alien callbacks.
3166 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3167 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3168 65k pages (thanks to David Woodhouse)
3169 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3171 changes in sbcl-1.0.1 relative to sbcl-1.0:
3172 * new platform: FreeBSD/x86-64, including support for threading.
3173 * new feature: the compiler stores cross-referencing information
3174 about function calls (who-calls), macroexpansion (who-macroexpands)
3175 and special variables (who-binds, who-sets, who-references) for code
3176 compiled with (< SPACE 3). This information is available through the
3177 sb-introspect contrib.
3178 * new feature: users may subclass SEQUENCE, and have instances of
3179 these classes interoperate with standard Common Lisp functions if
3180 a number of methods are defined. (This feature is experimental
3181 and the interface subject to change based on feedback from SBCL
3182 users and the general community)
3183 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3184 x86/x86-64, rather than the previous fixed depth of 8
3185 * improvement: another pthread back-end of mutex "pthread-futex".
3186 * bug fix: non-ascii command-line arguments are processed correctly
3187 (thanks to Yaroslav Kavenchuk)
3188 * bug fix: non-required arguments were not passed correctly when a method
3189 defined using DEFMETHOD was called from a mop-generated method using
3190 CALL-NEXT-METHOD (reported by Pascal Costanza)
3191 * bug fix: recursion is now permitted in accessors through
3192 SLOT-UNBOUND. (reported by Pascal Costanza)
3193 * bug fix: an error was signaled at startup if the HOME environment
3194 variable was defined, but had an empty value (reported by Peter Van Eynde)
3195 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3196 signal a PROGRAM-ERROR, not a BUG.
3197 * bug fix: SB-POSIX:READDIR works when built with large file support.
3198 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3200 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3201 for better automatic indentation support. (thanks to Matt Pillsbury)
3202 * optimization: loading generic functions no longer takes O(n^2) time,
3203 proportional to the amount of methods in the generic function
3204 (reported by Todd Sabin and Jeremy Brown)
3205 * optimization: the FIND and POSITION family of sequence functions
3206 are significantly faster on arrays whose element types have been
3208 * improvements to the Windows port:
3209 ** Intermittent heap corruption problems have been fixed. (thanks
3210 to Alastair Bridgewater)
3211 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3213 ** Lisp is able to unwind foreign exception frames from alien
3214 callbacks. (thanks to Alastair Bridgewater)
3216 changes in sbcl-1.0 relative to sbcl-0.9.18:
3217 * improvement: experimental support for threading on FreeBSD/x86.
3218 (thanks to NIIMI Satoshi)
3219 * improvement: runtime option --dynamic-space-size can be used
3220 to set the size of the dynamic space reserved on startup.
3221 * improvement: floating point modes in effect are now saved in
3222 core, and restored on startup.
3223 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3224 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3225 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3226 threads are not running after *SAVE-HOOKS* have run.
3227 * improvement: writes to CLOS instance slots are type-checked in code
3228 compiled with (SAFETY 3)
3229 * improvement: floating-point exception handling on FreeBSD (thanks to
3231 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3232 (thanks to Zach Beane)
3233 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3235 * improvement: added support for the Shift-JIS external format.
3236 (contributed by NIIMI Satoshi)
3237 * improvement: callbacks are supported on Linux/PPC. (thanks to
3239 * bug fix: compiler bug triggered by a (non-standard) VALUES
3240 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3241 * bug fix: file compiler no longer confuses validated and already
3242 dumped structurres. (reported by Kaersten Poeck)
3243 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3244 fill-pointer signals a type-error as required. (thanks to
3246 * bug fix: disassemly of funcallable instances works.
3247 * bug fix: single stepping on PPC.
3248 * bug fix: fix thread-safety problems in the type system (generally
3249 manifesting as nonsensical errors like "STRING is a bad type specifier
3250 for sequences" or "The value 1 is not of type FIXNUM")
3251 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3252 (reported by Josip Gracin)
3253 * bug fix: an error is signaled for attempts to displace arrays with
3254 incompatible element types (thanks to Mario Mommer)
3255 * bug fix: more correct handling of wide characters in debug info
3256 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3257 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3258 and don't cause extra consing
3259 * optimization: MAP and MAP-INTO are significantly faster on vectors
3260 whose elements types have been declared.
3261 * Improvements to SB-SPROF:
3262 ** Support for allocation profiling
3263 ** Reduced profiling overhead, especially for long profiling runs
3264 * Improvements to the Windows port:
3265 ** floating point exceptions are now reported correctly.
3266 ** stack exhaustion detection works partially.
3267 ** more accurate GET-INTERNAL-REAL-TIME.
3268 ** better RUN-PROGRAM behaviour in case of errors in the child
3270 ** PROBE-FILE now simplifies pathnames correctly.
3271 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3272 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3273 1st 1970 (although time timezone data will be unreliable).
3274 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3276 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3277 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3278 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3280 * bug fix: two potential GC deadlocks affecting threaded builds.
3281 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3282 returns T (reported by Anton Kazennikov)
3283 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3284 with non-variable places
3285 * bug fix: remove a race condition in the setting of
3286 funcallable-instance functions, this should make threaded CLOS
3287 code more stable against memory faults.
3288 * bug fix: corruption of specials when unbinding is interrupted by an
3289 asynchronous unwind (reported by Hannu Koivisto)
3290 * improvement: the debugger will now also display local variables that
3291 are only used once, for code compiled with a DEBUG optimization quality
3294 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3295 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3296 * incompatible change: External-format support for FFI calls. The
3297 SB-ALIEN:C-STRING no longer implies an ASCII
3298 external-format. Instead the string is subject to external-format
3299 conversion. Additionally return values of type SB-ALIEN:C-STRING
3300 are by default of type (SIMPLE-ARRAY CHARACTER), not
3301 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3302 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3303 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3304 * incompatible change: SB-EXT package no longer contains the
3305 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3306 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3308 * incompatible change: the single-stepper is no longer available
3309 on Alpha, Mips and Sparc platforms.
3310 * minor incompatible change: the direct superclasses of
3311 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3312 not (STANDARD-OBJECT FUNCTION). This makes the
3313 class-precedence-lists of GENERIC-FUNCTION and
3314 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3316 * minor incompatible change: the default stream external format on
3317 non-unicode SBCL is no longer detected from the locale, but is always
3319 * new feature: Add a version of evaluator that uses an interpreter instead
3320 of the compiler. EVAL still uses the compiler by default, to switch it
3321 to use the interpreter, set the value of the variable
3322 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3323 * minor incompatible change: the single-stepper REPL has been merged
3324 with the normal debugger (see the "Stepping" heading of the debugger help
3325 for more details). The debugger command STEP will no longer switch
3326 to the single-stepper REPL.
3327 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3328 for a type now works.
3329 * bug fix: loading of default sysinit file works. (thanks to Leonid
3331 * bug fix: better detection of circularities in the file-compiler.
3332 (reported by Marco Monteiro)
3333 * bug fix: the CL pathname functions now work with files that have
3334 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3335 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3336 systems with Unix98 pty semantics.
3337 * bug fix: ASDF-INSTALL will now work with bsd tar.
3338 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3340 * bug fix: timers expiring in dead threads no longer cause a
3341 type-error (reported by Paul "Nonny Mouse").
3342 * bug fix: thanks to more lightweight single-stepper instrumentation,
3343 code compiled with (DEBUG 3) will compile and execute significantly faster,
3344 and will have more accurate type-inferencing than before
3345 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3346 whose bindings are modified
3347 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3348 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3349 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3350 CL:SOFTWARE-VERSION with proper version
3352 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3353 * feature: implemented the READER-METHOD-CLASS and
3354 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3355 as specified by AMOP.
3356 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3358 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3359 (thanks to Lutz Euler)
3360 * optimization: hashing of general arrays and vectors has been
3361 improved. (reported by Any Fingerhut)
3362 * enhancement: SB-INTROSPECT is now able to find definitions of
3363 profiled functions. (thanks to Troels Henriksen)
3364 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3365 as well, allowing compiler-macros for SETF-functions to expand.
3366 * enhancement: step-instrumentation no longer wraps known
3367 single-value functions with multiple-value context, allowing
3368 better type inference.
3369 * fixed bug #337: use of MAKE-METHOD in method combination now works
3370 even in the presence of user-defined method classes. (reported by
3371 Bruno Haible and Pascal Costanza)
3372 * fixed bug #339(c): if there are applicable methods not part of any
3373 long-form method-combination group, call INVALID-METHOD-ERROR.
3374 (reported by Bruno Haible)
3375 * fixed bug #361: the :FUNCTION initarg in the protocol for
3376 initialization of methods can now be used to override
3377 internally-produced optimized functions. (reported by Bruno
3379 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3380 system-provided lambda expression no longer cause warnings about
3381 unbound #:|pv-table| symbols.
3382 * bug fix: improved the handling of type declarations and the
3383 detection of violations for keyword arguments with non-constant
3385 * bug fix: potentially erronous calls to PATHNAME and
3386 MERGE-PATHNAMES were being flushed in some cases.
3387 (reported by Richard Kreuter)
3388 * bug fix: compiled calls to TYPEP were mishandling obsolete
3389 instances. (reported by James Bielman and Attila Lendvai)
3390 * bug fix: format strings with ~> without matching ~< no longer
3391 trigger an AVER, but signal an understandable error instead.
3392 (reported by Antonio Martinez)
3393 * bug fix: specifying an output-file without a pathname-type for
3394 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3395 of input-file instead of "fasl". (reported by Robert Dodier)
3396 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3397 (reported by James Y Knight).
3398 * bug fix: compiler-macros-function did not consider the environment
3399 argument for shadowing by local functions.
3400 * bug fix: compiler-macros expansion was inhibited by local INLINE
3402 * bug fix: inline expansions of known functions were subject to
3403 step-instrumentation in high debug policies, leading to problems
3404 with type-inference.
3405 * bug fix: compiler failed to differentiate between different CONS
3406 types in some cases.
3407 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3408 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3409 * bug fix: #368: incorrect use of expressed vs. upgraded array
3411 * bug fix: #306a: more precise unions of array types.
3412 * thread-safety improvements:
3413 ** CONDITION-WAIT could return early on Linux, if the thread was
3414 interrupted and subsequently continued with SIGCONT.
3415 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3417 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3418 * added support for the ucs-2 external format. (contributed by Ivan
3420 * minor incompatible change: pretty printing of objects of type
3421 (cons symbol) is, in the default pprint-dispatch-table, now
3422 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3424 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3425 called later in a class's lifetime, possibly as late as when the
3426 first instance of the class is created. Previously,
3427 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3428 class became finalizeable.
3429 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3430 for multibyte external-format streams. (thanks to "vbzoli")
3431 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3432 with :ALLOCATION :CLASS inherited from superclasses of the
3434 * fixed bug: anonymous classes can now be created using the :NAME
3435 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3436 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3437 * fixed bug: core-files saved with :EXECUTABLE T can again be
3438 executed when SBCL_HOME isn't set. (reported by James Knight)
3439 * fixed bug: toplevel LOCALLY forms with declarations could
3440 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3441 * fixed bug: printing from several different threads using different
3442 values of *print-case* could cause invalid output, due to
3443 some internal special variables of the printer not being bound
3444 thread-locally (reported by Max Mikhanosha)
3445 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3446 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3447 (reported by Pascal Costanza)
3448 * fixed bug: FINALIZE-INHERITANCE is called from
3449 REINITIALIZE-INSTANCE on classes when the class has previously
3450 been finalized, as required by AMOP.
3451 * minor code generation optimizations:
3452 ** better register allocation in CLOS dispatching functions
3453 ** overflow detection when coercing signed bytes to fixnums on x86-64
3454 ** is now implemented with one IMUL instruction instead of three shifts
3455 ** more efficient bit-vector access on x86 and x86-64
3456 ** more efficient access to raw structure slots on x86 and x86-64
3457 * fixed some bugs revealed by Paul Dietz' test suite:
3458 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3459 return its argument.
3461 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3462 * feature: thread support on Solaris/x86, and experimental thread support
3464 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3466 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3467 default method for SLOT-UNBOUND.
3468 * minor incompatible change: prevent the user from specializing the
3469 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3470 somewhat counter to the intent of the protocol, I (CSR) think, and
3471 additionally it just doesn't work in SBCL as currently
3472 implemented, thanks to optimizations (that are always valid for
3473 the other three SLOT-VALUEish functions, but not for the setter).
3474 * minor incompatible change: the :SB-LDB feature is now enabled by
3475 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3476 the low-level debugger.
3477 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3478 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3479 down to an SB-SYS:FD-STREAM, allowing direct communication in
3480 more cases. Temporary files and pipes are still used as a fallback
3482 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3483 on the non-reentrant C functions localtime(3) and gmtime(3).
3484 * bug fix: global optimization policy was not visible in LOCALLY and
3486 * bug fix: class objects can be used as specializers in methods.
3487 (reported by Pascal Costanza)
3488 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3489 with a type error. (reported by blitz_ on #lisp)
3490 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3491 failed with a type error. (reported by Pascal Bourguignon)
3492 * bug fix: merging pathnames against defaults with :DIRECTORY
3493 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3494 (reported by James Y Knight)
3495 * bug fix: saving large (>2GB) cores on x86-64 now works
3496 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3497 constant index and a (simple-array (signed-byte 32)) array
3498 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3499 error (patch by Robert J. Macomber)
3500 * feature: TIME now displays the amount of run-time spent in GC
3501 * bug fix: The debugger now does a better job of respecting
3502 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3503 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3504 workaround for bug 403.)
3505 * bug fix: floating point exception handling now works on FreeBSD
3506 (thanks to NIIMI Satoshi)
3507 * fixed some bugs revealed by Paul Dietz' test suite:
3508 ** MISC.641: LET-conversion were not supposed to work in late
3510 * improvements to the Win32/x86 port:
3511 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3512 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3514 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3515 * new feature: source path information is generated for macro-expansion
3516 errors for use in IDE's like Slime (thanks to Helmut Eller)
3517 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3518 * bug fix: compiler does not loop forever on an invalid type in
3520 * improvement: compilation of most CLOS applications is significantly
3522 * optimization: added a limited bytecode compiler for simple toplevel
3523 forms, speeding up compilation and FASL loading
3524 * bug fix: the statistical profiler now properly distinguishes anonymous
3527 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3528 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3529 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3530 into subclasses of the finalized class. Now user calls to
3531 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3532 system return before any subclasses are finalized.
3533 * minor incompatible change: The reader no longer ignores errors
3534 regarding non-existent packages in #+ and #- feature tests.
3535 * new feature: command line options --no-sysinit, --no-userinit to
3536 inhibit loading the corresponding init files
3537 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3538 for sending data through UDP sockets (thanks to François-René Rideau)
3539 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3540 error is signalled instead (thanks to François-René Rideau)
3541 * minor incompatible change: Error signalling behaviour of lexical
3542 operations violating package locks has changed slightly. Refer to
3543 documentation on package locks for details.
3544 * enhancement: EVAL can process IF-expressions without resorting to the
3546 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3547 constant-folded properly due to missing out-of-line functions.
3548 (reported by Mika Pihlajamäki)
3549 * bug fix: LISTEN sometimes returned T even in cases where no data was
3550 immediately available from the stream
3551 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3552 were reversed. (reported by Levente Mészáros)
3553 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3554 when given a vector displaced to an adjustable array. (reported
3556 * bug fix: derivation of float boundaries from numbers outside the
3557 appropriate float range (reported by John Wiseman)
3558 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3560 * bug fix: precomputing cache entries for generic functions with
3561 some subclasses of specializers as yet invalid does not attempt to
3562 fill a cache line with a negative offset. (reported by Levente
3564 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3565 allow condition class objects as arguments to DOCUMENTATION and
3566 (SETF DOCUMENTATION); only find and set documentation for
3567 structure names for the STRUCTURE doc-type. (suggested by Gary
3569 * improvements to the Win32/x86 port:
3570 ** (user-homedir-pathname) and default initialization file
3571 locations now know about the user's "Documents and Settings"
3572 directory (thanks to Yaroslav Kavenchuk)
3573 ** run-program is implemented (thanks to Mike Thomas)
3574 ** sockets support (thanks to Timothy Ritchey)
3575 ** better backtrace support (thanks to Alastair Bridgewater)
3576 ** sb-grovel supported
3577 ** asdf-install and sb-posix work somewhat
3578 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3579 * improvements to the Solaris/x86 port:
3580 ** works on Solaris 11/Solaris Express
3581 ** floating-point exception handling support
3582 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3583 * fixed some bugs revealed by Paul Dietz' test suite:
3584 ** REMOVE-METHOD returns its generic function argument even when
3585 the method is not one of the generic functions' methods.
3586 ** objects declared as MEMBER types can be admissible arguments to
3587 structure accessors.
3588 ** printing characters should simply be printed by the FORMAT ~:C
3590 ** compiler failure when compiling functions with hairy constant
3591 defaults for optional parameters.
3592 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3593 function, which is already optimized.
3595 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3596 * new platform: experimental support for SBCL x86/Darwin, including
3597 MacOS X 10.4.5 on Intel.
3598 * new feature: Unicode character names are now known to the system
3599 (through CHAR-NAME and NAME-CHAR).
3600 * new feature: the filesystem location of SBCL's core file is
3601 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3602 * minor incompatible change: the contrib modules SB-POSIX and
3603 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3604 this change is to make it easier to distribute
3605 location-independent binaries.
3606 * bug fix: as implied by AMOP, standardized classes no longer have
3607 slots named by external symbols of public packages. (reported by
3609 * optimization: calling functions via constant symbols -- as in
3610 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3611 via the function object as in (FUNCALL #'FOO).
3612 * optimization: on x86 and x86-64, the calling convention for the
3613 case of dealing with an unknown number of values has been altered
3614 to be friendlier to the prediction heuristics implemented,
3615 particularly with reference to CALL and RET pairing. (thanks to
3616 Alastair Bridgewater)
3617 * optimization: on x86, the code for access to thread-local symbol
3618 values and binding/unbinding of thread-local symbols is smaller.
3619 (thanks to Alastair Bridgewater)
3620 * enhancement: CONSTANTP is now able to determine constantness of
3621 more complex forms, including calls to constant-foldable standardized
3622 functions and some special forms beyond QUOTE.
3623 * fixed bug: occasional GC crashes on Solaris/x86
3624 * optimization: x86-64 supports stack allocation of results of simple
3625 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3626 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3627 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3628 (thanks to James Knight)
3629 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3630 by the standard (thanks to Stephen Compall)
3632 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3633 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3634 be used for bundling the runtime and the core file into one
3635 executable binary. This feature is not currently supported on all SBCL
3636 platforms. (thanks to James Bielman and NIIMI Satoshi)
3637 * new feature: a generational or ephemeral garbage collector is now
3638 the default on the PowerPC platform (both Linux and Darwin). The
3639 old Cheney (stop and copy) collector is a build-time option.
3640 (thanks to Cyrus Harmon, after Raymond Toy)
3641 * minor incompatible change: the method by which SBCL finds its
3642 contributed modules has changed; it no longer relies on symbolic
3643 links from an $SBCL_HOME/systems directory, but searches directly
3644 in the subdirectories of $SBCL_HOME.
3645 * enhancement: the dynamic heap size on the Linux/PPC platform is
3646 markedly larger, even using the older Cheney garbage collector.
3647 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3648 certain complicated string types. (reported by Gary King)
3649 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3650 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3651 * fixed bug: DOCUMENTATION on structures no longer signals an
3652 error if no structure type of the right name exists. (reported by
3654 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3655 applicable non-standard primary or :AROUND method on
3656 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3657 no longer cause unbound variable errors. (reported by Kevin Reid)
3658 * fixed bug: metacircle resolution in cases where methods have slots
3659 added before the slots from STANDARD-METHOD. (reported by Jean
3661 * fixed bug: the Power PC assembly code for calling into lisp
3662 sometimes computed its return address wrongly (depending on the
3663 15th bit of the address, fixed at link time). This used to
3664 manifest itself in a segmentation violation while building PCL.
3665 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3666 many others over the years)
3667 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3668 the stack pointer (treated as a signed integer) is negative.
3669 (thanks to Peter van Eynde)
3671 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3672 * new platform: experimental support for the Windows operating
3673 system has been added. (thanks to Alastair Bridgewater)
3674 * fixed several bugs in and robustified the PPC FFI (including
3675 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3676 * bug fix: allow non-simple string symbol names (reported by Paul
3678 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3680 * bug fix: saving a core corrupted callbacks on x86/x86-64
3681 * bug fix: closed a loophole in metacircularity detection and
3682 grounding in the PCL implementation of CLOS.
3683 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3684 (reported by tomppa on #lisp)
3685 * bug fix: clear the direction flag on Lisp -> C transitions, as
3686 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3687 (reported by Andrej Grozin and Hendrik Maryns)
3688 * optimization: major improvements to GC efficiency on GENCGC platforms
3689 * optimization: faster implementation of EQUAL
3690 * optimization: emit more efficient opcodes for some common
3691 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3692 * optimization: several other minor code-generation improvements on x86-64
3693 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3695 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3696 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3697 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3698 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3699 by ANSI as a generic function, and for consistency (SETF
3700 GENERIC-FUNCTION-NAME) is treated likewise.
3701 * fixed bug #233.b: make constraint propagation notice when a variable
3702 value is changed after it is referenced but before it is used
3703 * fixed bug #296: no more arbitrary behaviour from filenames with
3704 odd characters as --load arguments. (reported by Adam Warner)
3705 * fixed bug #390: :CHARACTER-SET pathname components now work as
3706 expected. (reported by Tim Daly Jr)
3707 * fixed bug #391: complicated :TYPE intersections in slot
3708 definitions no longer cause an error in PCL internals.
3709 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3710 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3711 returning the number of octets which would be written to the
3712 file-stream. (thanks to Robert J. Macomber)
3713 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3714 arguments to the internal stream functions. (thanks to David
3716 * bug fix: stack exhaustion is now handled on the x86/SunOS
3717 platform. (thanks to Daisuke Homma)
3718 * bug fix: more accurate ROOM results on GENCGC platforms
3719 * optimization: improved type inference for arithmetic-for
3720 index variables in LOOP
3721 * optimization: faster floating-point SQRT on x86-64
3722 * fixed some bugs revealed by Paul Dietz' test suite:
3723 ** DOCUMENTATION returns NIL instead of "" for method combinations
3724 that don't have a docstring
3726 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3727 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3728 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3729 therefore are not customizeable by user code (as seems to be at
3730 least permitted and maybe required by AMOP). As a consolation,
3731 however, the SBCL implementation of these functions now calls
3732 REINITIALIZE-INSTANCE as specified by AMOP.
3733 * bug fix: slot-definition documentation is propagated as per ANSI
3734 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3735 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3736 argument, as do eslotd initialization methods. (from Pascal
3737 Costanza's "Closer" project)
3738 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3739 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3741 * bug fix: it is now possible to have more than one subclass of
3742 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3743 (reported by Bruno Haible, Pascal Costanza and others)
3744 * bug fix: the dependent update protocol now works for generic
3745 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3746 and Pascal Costanza)
3747 * bug fix: condition-class instances corresponding to
3748 DEFINE-CONDITION forms are now created eagerly. (reported by
3749 Kalle Olavi Niemitalo on comp.lang.lisp)
3750 * bug fix: floating point printing is more accurate in some
3751 circumstances. (thanks to Simon Alexander)
3752 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3753 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3754 * bug fix: callbacks on OS X now preserve stack-alignment.
3755 (thanks to Cyrus Harmon)
3756 * enhancement: the x86-64 disassembler is much better at
3757 disassembling SSE instructions. (thanks to Lutz Euler)
3758 * enhancement: CHECK-TYPE on a variable now allows type-inference
3759 (thanks to Vincent Arkesteijn)
3760 * optimization: improved performance of EUC-JP external format.
3761 (thanks to NIIMI Satoshi)
3762 * optimization: performance improvements to IO on file streams of
3763 :ELEMENT-TYPE CHARACTER
3764 * optimization: much faster memory allocation on x86-64
3765 * optimization: faster garbage collections (latency and throughput)
3767 * optimization: faster bignum subtraction and division on x86 and x86-64
3768 (thanks to Lutz Euler)
3769 * optimization: more accurate type-inference for loops that use a
3770 floating point index variable or a negative step.
3772 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3773 * bug fix: add a workaround to SBCL looping infinitely at startup on
3774 Linux kernels with apparently buggy implementations of personality().
3775 (thanks to Svein Ove Aas)
3776 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3777 (thanks to David Lichteblau)
3778 * bug fix: local bindings shadow global symbol macros for
3779 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3780 * optimization: non-open coded uses of numeric comparison operators
3781 (e.g. >) no longer cons when called with more than one parameter
3782 on platforms supporting dynamic-extent allocation.
3783 * enhancement: saving cores with foreign code loaded is now supported
3784 on MIPS/Linux in addition to the previously supported platforms.
3785 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3786 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3787 * bug fix: division by zero in sb-sprof when no samples were collected
3788 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3789 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3790 (thanks to Alexander Kjeldaas)
3791 * new feature: ignoring the return values of destructive functions
3792 like NREVERSE signals a compile-time style-warning.
3793 (thanks to Kevin Reid)
3794 * new feature: the alignment of alien structure fields can be
3795 explicitly specified. (thanks to Cyrus Harmon)
3796 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3797 and dump core on SIGQUIT
3799 ** incompatible change: threads do not inherit values of specials
3800 from their parents (see manual)
3801 ** bug fix: threads stacks belonging to dead threads are freed by the
3802 next exiting thread, no need to gc to collect thread stacks anymore
3803 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3804 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3805 ** bug fix: dynamic variable and thread start related gc lossage
3806 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3808 * fixed some bugs revealed by Paul Dietz' test suite:
3809 ** SUBTYPEP is slightly more accurate on heinously complicated
3810 CONS types where some of the members have uncertain (in the
3811 NIL, NIL sense) type relationships to each other.
3813 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3814 no longer purified unless :PURIFY T is explicitly specified.
3815 ** Non-purified cores are significantly smaller than before
3817 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3818 * new feature: timers based on Zach Beane's excellent timer package
3819 * added support for the following external formats: koi8-u,
3820 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3821 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3822 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3823 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3824 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3825 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3826 * incompatible change: a threaded SBCL will no longer revert to
3827 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3828 * bug fix: interrupts are disabled until startup is complete; no
3829 more sigsegvs when receiving a signal to soon
3830 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3832 * bug fix: add a workaround for the memory randomization features in
3833 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3834 workaround will only be in effect on systems with the proc filesystem
3836 * bug fix: printing objects of type HASH-TABLE signals a
3837 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3839 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3840 have been running for over 50 days. (reported by Gilbert Baumann)
3841 * bug fix: the logic for getting names of functions gets less
3842 confused when confronded with alternate-metaclass
3843 funcallable-instances. (reported by Cyrus Harmon)
3844 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3845 consistent, even on internal alternate-metaclass objects.
3846 * bug fix: flush closure information collected by physical
3847 environment analysis prepass before the main pass. (bug reported
3849 * bug fix: compiler pack phase does not modify a hashtable, which is
3850 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3851 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3852 may be expanded. (reported by Alexander <malishev> on c.l.l)
3853 * bug fix: no more style-warnings when compiling code using LAST
3854 under high-SPEED low-SPACE settings. (reported by David Wallin
3856 * fixed some incompatibilities between SBCL's MOP and the MOP
3858 ** the METAOBJECT class is now implemented;
3859 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3860 STANDARD-OBJECT, as required;
3861 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3862 now compatible (as required by VALIDATE-SUPERCLASS); there
3863 remains a consistency requirement over the presence or absence
3864 of the FUNCTION class in the superclass list of finalized
3865 classes; see the manual for more details;
3866 ** the :AROUND method for COMPUTE-SLOTS on
3867 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3868 requested slot ordering.
3870 ** bug fix: parent thread now can be gc'ed even with a live
3872 ** bug fix: binding a special with PROGV to no value is not
3873 the same as that symbol not having been bound (thanks to
3875 ** bug fix: binding specials is thread safe (thanks to
3877 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3878 and SB-SPROF do not die with 'no handler for signal XX in
3879 interrupt_handle_now(..)' anymore
3880 ** bug fix: WITH-TIMEOUT works with multiple running threads
3881 * fixed some bugs revealed by Paul Dietz' test suite:
3882 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3883 the :method-class keyword argument.
3885 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3886 * new port: the Solaris operating system on x86 processors is now
3887 mostly supported, though some rough edges in the environment
3888 remain. (thanks to Daisuke Homma)
3889 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3890 space for its heap. (thanks to Thiemo Seufer)
3891 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3892 closures. (thanks to Thiemo Seufer)
3893 * minor incompatible change: eof selects abort in the debugger.
3894 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3895 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3897 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3898 deprecated, and will go away in a future revision of SBCL.
3899 * minor incompatible change: GC-ON and GC-OFF are no longer
3900 implemented with a counter, it does not matter how many times gc
3901 is switched on or off
3902 * bug fix: discriminating functions for generic function classes
3903 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3904 make invalid assumptions about method precedence order. (reported
3906 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3907 platforms. (thanks to Thiemo Seufer)
3908 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3909 * bug fix: correct pathname printing with printer escaping is on.
3910 (thanks to Kevin Reid)
3911 * bug fix: complex VOP definitions in "user-space" no longer trigger
3912 package locks. (reported by Zach Beane)
3913 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3914 for funcallable-instance functions, and is no different from
3916 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3917 characters in the current readtable. (reported by Nicholas Neuss)
3918 * bug fix: SUBTYPEP on various CONS types returns more a more
3919 accurate acknowledgment of its certainty.
3920 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3921 lists in some cases. This partially fixes bug 384.
3922 * flush all standard streams before prompting in the REPL and the
3924 * bug fix: signal handling and triggering gc do not conflict
3925 directly anymore, in particular a high frequency sb-sprof does
3926 not prevent gc from running
3927 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3928 approximation for timezone and DST information between the
3929 universal time epoch and the smallest negative 32-bit time_t.
3930 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3931 year 1899 so long as the encoded time is non-negative.
3932 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3933 the correct answer for non-constant rotate amounts when performing
3934 an inline 32-bit rotation.
3936 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3937 there is only one thread in the session
3938 ** bug fix: memory leak for streams created in one thread and
3939 written to in another
3940 ** bug fix: lockup when compiled with gcc4
3941 ** bug fix: race that allows the gc to be triggered when gc is
3943 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3944 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3946 ** bug fix: finished threads are gc'ed properly
3947 * fixed some bugs revealed by Paul Dietz' test suite:
3948 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3949 has arguments with a different set of applicable methods from
3950 the orignal arguments.
3951 ** The type error thrown by MAP now has a correct expected-type
3953 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3954 name a compiled function.
3955 ** Three MISC tests where a large bignum was improperly coerced to
3956 a float that couldn't represent that bignum during type
3957 derivation were fixed.
3958 ** SUBTYPEP can now handle types involving the negation of a
3959 list-form FUNCTION type.
3960 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3961 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3962 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3964 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3965 * New feature: Experimental support for bivalent streams: streams
3966 opened with :element-type :default now allow character and binary
3967 (unsigned-byte 8) I/O
3968 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3969 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3971 * bug fix: no more highly sporadic "couldn't check whether ~S is
3972 readable" when reading a stream and an interrupt hits in the middle
3973 of a select system call
3974 * compiler better recognizes complex arrays (reported by Eduardo
3976 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3977 for variables on SBCL built with linkage-tables. (reported by Luis
3979 * various error reporting improvements.
3980 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3981 (Thanks to Thiemo Seufer)
3982 * bug fix: nested reader invokations work correctly
3983 * bug fix: it is possible to have simultaneous references to foreign
3984 code and foreign data with the same name.
3986 ** added x86-64 support
3987 ** incompatible change: the threading api now works with thread
3988 objects instead of thread ids
3989 ** bug fix: threads are protected from signals and interruption when
3990 starting up or going down
3991 ** bug fix: a race where an exiting thread could lose its stack to gc
3992 ** bug fix: don't halt on infinite error in threads if possible
3993 ** fixed numerous gc deadlocks introduced in the pthread merge
3994 ** bug fix: fixed thread safety issues in read and print
3995 ** bug fix: debugger doesn't hang on session lock if interrupted at
3996 an inappropriate moment
3997 ** bug fix: run-program is now thread safe(r)
3998 ** bug fix: inner with-recursive-lock no longer releases the mutex
3999 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4000 * fixed some bugs revealed by Paul Dietz' test suite:
4001 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4002 EXPECTED-TYPE slots filled.
4003 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4005 ** MAKE-CONDITION accepts classes as type-designators.
4006 ** COMPILE may never return NIL.
4007 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4008 range before calling Unix time functions
4010 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4011 * numerous signal handling fixes to increase stability
4012 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4013 * minor incompatible change: we now correctly canonize default
4014 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4015 as per the MOP, rather than the historical (INITARG INITFUNCTION
4016 INITFORM). (reported by Bruno Haible)
4017 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4018 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4019 for more information.
4020 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4021 pathname is a directory pathname.
4022 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4023 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4025 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4026 :METACLASS argument in addition to a class name. (reported by
4027 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4028 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4029 (reported by Bruno Haible; patch from Gerd Moellmann)
4030 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4032 * bug fix: more cleanups to the floating point exception handling on
4033 x86-64 (thanks to James Knight)
4034 * bug fix: the compiler does not try to constant fold calls of
4035 COERCE and BIT-* functions when they return freshly constructed
4036 objects. (reported by Nikodemus Siivola and Paul Dietz)
4037 * optimization: improved the MIPS versions of generic (in the
4038 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4039 * optimization: direct conversion of (unsigned-byte 32) to floats on
4040 the PowerPC platform.
4041 * optimization: structure instances with raw slots now use less
4042 memory, and probably show better memory locality. (thanks to
4044 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4045 are treated as requests for stack allocation on the x86-64,
4046 Alpha-32, PPC and SPARC platforms.
4047 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4048 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4049 (thanks to Tony Martinez)
4051 ** gcing a dead thread can no longer lead to lockups
4052 ** threads block signals until they are set up properly
4053 ** errno is no longer shared by threads
4054 ** interrupt-thread restores the eflags register on x86
4055 ** fixed some lockups due to gc/thread interaction
4056 * fixed some bugs revealed by Paul Dietz' test suite:
4057 ** invalid dotted lists no longer raise a read error when
4058 *READ-SUPPRESS* is T
4059 ** signal an error if a symbol that names a declaration is used
4060 as the name of a type, or vice versa
4061 ** allow using the (declare (typespec var*)) abbreviation for
4062 (declare (type typespec var*)) with all type specifiers
4063 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4064 ** always return NIL from PPRINT-POP when OBJECT is NIL
4065 ** don't signal errors when pretty-printing malformed LABELS,
4066 FLET or MACROLET forms
4067 ** declarations in a DOLIST body are also in scope for the
4069 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4071 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4074 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4075 * fixed cross-compiler leakages that prevented building a 32-bit
4076 target with a 64-bit host compiler.
4077 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4078 opened with :IF-EXISTS :OVERWRITE.
4079 * fixed bug 281: error for an invalid qualifier in a short-form method
4080 combination method is not signalled until the faulty method is called.
4081 * bug fix: iteration variable type inferrer failed to deal with open
4082 intervals. (reported by Alan Shields)
4083 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4084 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4085 or more runtime options were provided to the sbcl binary.
4086 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4087 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4088 * optimization: there's now a fast-path for fixnum arguments in the
4089 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4090 * optimization: the code generated on x86-64 is more compact thanks
4091 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4092 * bug fix: floating-point exception handling now partly works on
4093 x86-64. (Thanks to James Knight)
4094 * improvement to the MIPS backend from Thiemo Seufer: C-style
4095 64-bit long long arguments and return values to alien functions
4097 * fixed some bugs revealed by Paul Dietz' test suite:
4098 ** the type-error signalled from WARN has a filled-in DATUM slot.
4099 ** the type-error required when a stream is not associated with
4100 a file has the stream as its datum.
4101 ** type-errors on single-floats on x86-64 no longer have
4102 :INVALID-OBJECT as the datum
4103 ** the type-errors signalled for invalid function names now have
4104 a correct expected type
4105 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4106 for structures defined with a :TYPE. Documentation strings for
4107 typed structures are no longer immediately discarded
4108 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4109 broadcast streams and synonym streams. FILE-LENGTH now also works
4110 on broadcast streams.
4112 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4113 * incompatible change: the --noprogrammer option, deprecated since
4114 version 0.7.5, has been removed. Please use the equivalent
4115 --disable-debugger option instead.
4116 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4118 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4119 inoperational for a while now) has been completely removed.
4120 * null lexical environments are now printed as #<NULL-LEXENV>,
4121 significantly reducing the amount of clutter in typical backtraces.
4122 * documentation on weak pointers, finalization, and after GC hooks
4123 has been added to the manual.
4124 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4125 as other specialized array types, is much faster. SUBSEQ and
4126 COPY-SEQ on such arrays have also been sped up.
4127 * optimization: EQL is now more efficient when at least other argument
4128 is known to be of type (OR FIXNUM (NOT NUMBER)).
4129 * fixed bug: the runtime is now less vulnerable to changes in the
4130 size of the SBCL object on OS X, and virtual memory is reserved for
4131 all spaces that need to be at a fixed address.
4132 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4133 * fixed bug: finalizers and after GC hooks that cause consing are now
4135 * fixed bug: compiler error messages and summaries are now printed to
4136 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4137 * fixed inference of the upper bound of an iteration variable.
4138 (reported by Rajat Datta).
4139 * fixed bug 211e: calling local functions with duplicated constant
4140 keyword argument no longer causes a bogus style warning about an
4142 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4143 ftype declaration to be disregarded. (reported by Dave Roberts)
4144 * fixed bug 373: caused by erronous compilation of references to alien
4145 variables in the runtime on ppc/darwin.
4146 * fixed bug 376: CONJUGATE type deriver.
4147 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4148 (reported by Baughn on #lisp)
4149 * a cross-compiler bug on non-x86 platforms has been identified and
4150 fixed. (thanks to Bruno Haible)
4151 * improvements to the MIPS runtime code for increased stability.
4152 (thanks to Thiemo Seufer)
4153 * increased the maximimum compact environment size to allow
4154 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4155 * partial workaround for bug 135: don't name the function we're
4156 calling for hairy cases of EVAL, so as not to accumulate one environment
4157 entry per call to EVAL. (reported by Kevin Reid)
4158 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4159 * optimization: type testing for non-vector arrays should be faster.
4160 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4162 * bug fix: setting 31st element of a bit vector to zero did not work
4164 * bug fix: redefining a class definition which failed due to a
4165 previous accessor / function clash now works (but see BUGS entry
4166 #380 for more problems in this area). (thanks to Zach Beane)
4167 * the long form of DEFINE-METHOD-COMBINATION disables method group
4168 checking when given a single method group with pattern *. (thanks
4170 * on x86 compiler supports stack allocation of results of simple
4171 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4172 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4173 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4174 * fixed some bugs related to Unicode integration:
4175 ** the restarts for recovering from input and output encoding
4176 errors only appear when there is in fact such an error to
4178 * fixed some bugs revealed by Paul Dietz' test suite:
4179 ** MISC.549 and similar: late transformation of unsafe type
4180 assertions into derived types caused unexpected code
4182 ** SCALE-FLOAT type deriver is less wrong.
4183 ** type derivers for EXP, LOG and similar functions compute result
4184 types for complex arguments better.
4185 ** (MISC.563) CONJUGATE type deriver works for very restricted
4187 ** out-of-line type testers for character strings are available.
4188 ** EQUAL compiler transform understands specialness of objects
4190 ** accessing double-floats stored on the stack now works on x86-64.
4191 ** debugger internals could sometimes create invalid lispobjs,
4192 resulting in GC crashes.
4193 ** MISC.548: type check weakening can convert required type into
4195 ** initialization forms for bindings are not in scope of free special
4198 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4199 * incompatible change: thread support for non-NPTL systems has
4200 been removed - locking is buggy and unreliable. A threaded
4201 SBCL build will now warn at startup and refuse to create
4202 new threads, unless futex support is detected in the kernel
4203 * incompatible change: the top level REPL now has only an ABORT
4204 restart associated with it, not TOPLEVEL and ABORT as it used to.
4205 TOP and TOPLEVEL are now available as debugger commands for
4206 returning to the top level.
4207 * incompatible change: forms evaluated in the REPL now use the
4208 global optimization policy.
4209 * incompatible change: user- and system-initialization files are
4210 no longer processed with LOAD, but by READ and EVAL; hence the
4211 global optimization policy, startup package, readtable, etc,
4213 * The .fasl file format number has been incremented because of
4214 various incompatible changes.
4215 * internal entry point details and argument counts no longer appear
4216 in backtraces unless explicitly requested by setting
4217 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4218 * built-in and standard functions no longer have names like "top
4219 level local call to FOO".
4220 * fixed bug 32: functions defined in non-null lexical environments
4221 now have more legible printed representation
4222 * fixed bug 33: functions defined in non-null lexical environemnts
4223 are now more amenable to inspection by INSPECT.
4224 * workaround for bug 354: XEPs no longer appear in backtraces unless
4225 explicitly requested.
4226 * fixed bug: receiving the signal which results from attempting to
4227 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4228 SIGBUS on other *BSDs) on architectures where the C stack is also
4229 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4230 to debugger confusion or wild instability. (reported by Cheuksan
4232 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4233 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4234 (reported by Lutz Euler)
4235 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4236 compiled code. (reported by Paul Dietz)
4237 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4238 specialized parameter to a method to something that is not TYPEP
4239 the specializer is now possible.
4240 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4241 face of package deletion.
4242 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4243 pathname. (reported by David Tolpin on c.l.l)
4244 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4245 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4246 STRING-STREAM and FILE-STREAM, respectively.
4247 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4248 than previously; in addition, its test suite is now run on build.
4249 (thanks to Luke Gorrie)
4250 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4251 * optimization: added a immediate representation for single-floats
4253 * fixed some bugs revealed by Paul Dietz' test suite:
4254 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4255 ** attempting to create a package with a colliding nickname causes
4256 correctable errors to be signalled.
4257 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4258 ** several x86-64 backend bugs related to sign-extension of immediate
4261 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4262 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4263 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4265 * fixed loading of multiply forward-referenced layouts.
4266 (thanks to Cheuksan Wang)
4267 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4268 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4269 (see COMPILE-FILE documentation for details of :PRINT option)
4270 * fixed bugs 19 and 317: fixed-format floating point printing is
4271 more accurate. This also fixes a bug reported by Adam Warner
4272 related to the ~@F format directive.
4273 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4275 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4276 dispatch table if the from-char is a dispatch macro character.
4277 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4278 by the wordsize no longer ignore the last word. (reported by Lutz
4280 * fixed bug in type checking of dynamic-extent variables. (reported
4282 * optimization: sequence traversal functions use their freedom to
4283 coerce function designators to functions.
4284 * optimization: code with many calls to CLOS methods specialized on
4285 CLOS classes has had redundant type checks removed.
4286 * optimization: added declarations to speed up operations that access
4287 the internal character database (for example STRING-UPCASE)
4288 * optimization: comparison operations between floats and sufficiently small
4289 fixnums no longer create extra rationals
4290 * fixed some bugs related to Unicode integration:
4291 ** portions of multibyte characters at the end of buffers for
4292 character-based file input are correctly transferred to the
4293 start of the buffer at the next read.
4294 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4295 passing it through to OPEN.
4296 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4297 argument given to internal calls to OPEN.
4298 ** the built-in comment readers (introduced by character sequences
4299 ";" and "#|") are more forgiving to encoding errors; they will
4300 STYLE-WARN and then attempt to resync the stream at a character
4301 boundary. (thanks to Teemu Kalvas)
4302 * fixed some bugs in the x86-64 port:
4303 ** Negative short int return values from c-calls are sign-extended
4305 ** The stack is aligned to 16-bytes for c-calls, as required by
4306 the ABI. (thanks to Cheuksan Wang)
4307 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4308 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4309 for enums. (thanks to Vincent Arkesteijn)
4310 ** Multiple small optimizations and bugfixes for floating point
4312 * fixed some bugs revealed by Paul Dietz' test suite:
4313 ** Space, Tab, Linefeed, Return and Page have the invalid
4314 secondary constituent character trait.
4315 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4317 ** WITH-INPUT-FROM-STRING should only update the index place on
4319 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4320 works more reliably.
4321 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4322 with one-dimensional arrays with fill pointers.
4323 ** TYPE-OF failed on a complex with an integer realpart and a
4325 ** compiler failure during type inference for the code of form
4326 (IF (EQL X (THE ...)) ...) (MISC.535).
4328 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4329 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4330 platform. The port supports 61-bit fixnums, large memory spaces
4331 and reloading shared object files.
4332 * enhancement: saving cores with foreign code loaded is now
4333 supported on ppc/Darwin in addition to the previously supported
4335 * enhancement: the statistical profiler now walks deeper into the
4336 call stack for more meaningful call-graphs and accrued time
4337 reports (x86/x86-64 only). It also now reports time spent in
4339 * enhancement: it is now possible to trace most individual methods
4340 of a generic function in addition to tracing the generic function
4342 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4344 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4345 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4346 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4347 produces an error. (thanks to Vincent Arkesteijn)
4348 * bug fix: NAMESTRING on pathnames with :WILD components in their
4349 directories works correctly. (thanks to Artem V. Andreev)
4350 * fixed bug 125: compiler preserves identity of closures. (reported
4352 * bug fixed: functions with &REST arguments sometimes failed with
4353 "Undefined function" when compiled with (DEBUG 3). (reported by
4355 * bug fix: overflow during compiling of setting element of a bit
4356 vector with constant index and value. (reported by Timmy Douglas)
4357 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4358 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4359 * on x86 compiler partially supports stack allocation of dynamic-extent
4361 * GO and RETURN-FROM do not check the extent of their exit points
4362 when compiled with SAFETY 0.
4363 * fixed some bugs related to Unicode integration:
4364 ** encoding and decoding errors are now much more robustly
4365 handled; it should now be possible to recover even from invalid
4366 input or output to the terminal. (thanks to Teemu Kalvas)
4367 ** provided a first cut at implementing STRING-TO-OCTETS and
4368 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4369 ** altered the SB-MD5 contributed module slightly, changing the
4370 interface just enough for it to be supportable for builds where
4371 lisp characters are not eight bits.
4372 * fixed some bugs revealed by Paul Dietz' test suite:
4373 ** the FORMATTER-generated functions for ~V[ conditionals require
4374 the correct number of arguments.
4375 ** READ-FROM-STRING returns the mandated second value when applied
4376 to displaced strings.
4377 ** the #\Rubout and #\Backspace characters are treated as invalid
4378 constituent characters by the tokenizer.
4380 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4381 * new feature: reloading changed shared object files with
4382 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4383 * new feature: references to foreign variables and functions
4384 can now be compiled and loaded before the corresponding shared
4385 object file is loaded, as long as the foreign definitions are
4386 available at runtime.
4387 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4388 supported. (thanks to Dan Debertin)
4389 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4390 just keywords. (thanks to Vincent Arkesteijn)
4391 * fixed bug #331: structure-class instances corresponding to
4392 DEFSTRUCT forms are now created eagerly.
4393 * fixed bug #345: backtraces from calls to undefined functions work
4394 on x86 as well. Related bug #61 is now also partially fixed on x86
4395 (backtraces from throws to unknown catch tags.)
4396 * bug fix: lambda-list parsing is now stricter vrt. order and number
4397 of lambda-list keywords.
4398 * bug fix: as specified by AMOP, an error is signalled if a
4399 class-option appears multiple times in a DEFCLASS form. (reported
4401 * bug fix: RANDOM can be compiled when the compiler derives the type
4402 of its numeric argument as a disjoint set of small integers.
4403 (reported by Paul Dietz)
4404 * bug fix: starting a core saved with shared objects loaded when
4405 those objects are not available no longer causes threaded SBCL to
4406 hang. (reported by Sean Ross)
4407 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4409 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4410 argument, which must always be NIL. (reported by Kalle Niemitalo)
4411 * bug fix: printing 1.0d+23 no longer results in an error.
4412 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4413 * bug fix: structure slot setters preserve evaluation order. (thanks
4415 * fixed some bugs related to Unicode integration:
4416 ** RUN-PROGRAM can allow its child to take input from a Lisp
4417 stream. (reported by Stefan Scholl)
4418 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4419 locales. (reported by Ken Causey)
4420 * fixed some bugs revealed by Paul Dietz' test suite:
4421 ** INCF, DECF and REMF evaluate their place form as specified in
4423 ** FORMATTER expands ~{ ~} iteration directives with V or #
4424 parameters correctly.
4425 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4426 consequent uses no arguments correctly.
4427 ** the system has a partial understanding of the (COMPLEX RATIO)
4429 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4432 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4433 * new feature: a build-time option (controlled by the :SB-UNICODE
4434 keyword feature, enabled by default) for building the system with
4435 support for the entire 21-bit character space defined by the
4437 * new feature: the system now has rudimentary external-format
4438 support; the primary user-visible change at this time is that
4439 characters with the high bit set (such as lower-case-e-acute) will
4440 print correctly to a terminal in a UTF-8 environment.
4441 * minor incompatible change: BASE-CHAR no longer names a class;
4442 however, CHARACTER continues to do so, as required by ANSI.
4443 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4444 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4445 has been moved to the SB-EXT package (temporarily re-exported from
4447 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4448 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4450 * fixed bug #351: better error-handlind and reporting for malformed
4452 * fixed bug #350: bignum-printing is now more memory-efficient,
4453 allowing printing of very large bignums, eg. (expt 2 10000000).
4454 (reported by Bruno Haible)
4455 * fixed bug #302: better primitive-type selection for intersection
4457 * fixed bug #308: non-graphic characters now all have names, as
4458 required. (reported by Bruno Haible)
4459 * bug fix: redefining a class with different superclasses now correctly
4460 removes it from the direct-subclasses of its previous superclasses.
4461 (reported by David Morse)
4462 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4463 new value now works. (reported by Bruno Haible)
4464 * bug fix: correct canonicalization of multiple non-standard slot
4465 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4466 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4467 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4468 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4469 now exists, an signals an error.
4470 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4471 during macroexpansion for non-iteration variables as well. (reported
4472 by Bruno Haible for CMUCL)
4473 * bug fix: Cyclic structures and unprintable objects in compiler
4474 messages no longer cause errors. (reported by Bruno Haible)
4475 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4476 and READ-FROM-STRING all now return a primary value of NIL if
4477 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4478 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4479 (reported by Bruno Haible for CMUCL)
4480 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4481 do not designate a condition. (reported by Bruno Haible for
4483 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4484 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4485 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4486 permitting resolution in favour of any of the conflicting symbols.
4487 (reported by Bruno Haible for CMUCL)
4488 * bug fix: EQUAL compiler optimizations is less aggressive on
4489 strings which can potentially compare true despite having distinct
4490 specialized array element types.
4491 * bug fix: unit enumerations can be defined without dividing by
4492 zero. (thanks to Vincent Arkesteijn)
4493 * FORMAT compile-time argument count checking has been enhanced.
4494 (report from Bruno Haible for CMUCL)
4495 * a partial workaround for the bug 262: the compiler does not try to
4496 inline-expand a local function doing RETURN-FROM from a deleted
4497 BLOCK. (thanks to Peter Denno for the bug report and to David
4498 Wragg for the simple test case)
4499 * fixed some bugs revealed by Paul Dietz' test suite:
4500 ** RENAME-PACKAGE allows all package designators as new package
4502 ** constraint propagation and lambda variable substitution are
4503 more cautious in dealing with partially deleted code.
4504 ** compiler sometimes lost reoptimization passes.
4505 ** CERROR, given a condition as condition designator, passes its
4506 remaining arguments to the continue format control without
4508 ** Case-altering FORMAT directives work correctly on non-ASCII
4510 ** The REAL type specifier handles bounds outside the floating
4511 point ranges without signalling FLOATING-POINT-OVERFLOW.
4512 ** Functions with IR1-transformations can create intercomponent
4513 references to global functions.
4514 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4516 ** FORMAT ~R treats a nil value for its first parameter correctly.
4518 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4519 * enhancement: saving cores with foreign code loaded is now
4520 supported on x86/NetBSD and sparc/Linux in addition to the previously
4521 supported platforms.
4522 * bug fix: on some platforms repeated installations caused multiple
4523 copies of HTML documentation to be installed -- should not happen
4524 any more. (reported by Stefan Scholl)
4525 * bug fix: parsing self-recursive alien record types multiple times
4526 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4527 original patch by Helmut Eller for CMUCL)
4528 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4529 (thanks to Richard Kreuter)
4530 * bug fix: defining classes whose accessors are methods on existing
4531 generic functions in other (locked) packages no longer signals
4532 bogus package lock violations. (reported by François-René Rideau)
4533 * bug fix: special variables as DEFMETHOD parameters no longer have
4534 associated bogus type declarations. (reported by David Wragg and
4536 * bug fix: read-write consistency on streams of element-type
4537 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4538 * bug fix: redefiniton of the only method of a generic function with
4539 no DEFGENERIC no longer emits a full WARNING. In addition,
4540 redefinition of generic functions with no DEFGENERIC to an
4541 incompatible lambda list now signals an error. (thanks to Zach
4543 * bug fix: DEFGENERIC now works even when there's a function of the
4544 same name in an enclosing lexical environment. (thanks to Zach
4546 * fixed compiler failure, caused by instrumenting code during
4547 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4548 * optimization: added loop analysis and improved register allocation
4549 * fixed some bugs revealed by Paul Dietz' test suite:
4550 ** POSITION on displaced vectors with non-zero displacement
4551 returns the right answer.
4552 ** (SIMPLE-STRING) is a valid type specifier for sequence
4554 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4556 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4557 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4559 ** The justification version of the FORMAT ~< directive treats
4560 non-zero minpad parameter correctly.
4562 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4563 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4564 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4565 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4566 the supported interface.
4567 * new feature: Single-stepping of code compiled with DEBUG 2 or
4568 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4569 * new feature: saving cores with foreign code loaded is now
4570 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4571 Timothy Moore's work for CMUCL)
4572 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4573 parameters to * instead of NIL if no initform is supplied.
4574 (reported by Johan Bockgaard)
4575 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4576 correctly when FUNCALL appears as the car of the form. Note:
4577 despite this FUNCALL forms are not currently subject to
4578 compiler-macro expansion. (port of Raymond Toy's fix for the
4579 same from CMUCL, reported by Johan Bockgaard)
4580 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4581 (thanks for Teemu Kalvas)
4582 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4583 case instead of terminating the iteration (thanks for Julian
4584 Squires, Sean Champ and Raymond Toy)
4585 * bug fix: incorrect expansion of defgeneric that caused a style
4586 warning. (thanks for Zach Beane)
4587 * bug fix: slot accessor effective method computation works properly
4588 for classes with multiple non-standard applicable methods on
4589 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4590 * on x86 compiler supports stack allocation of results of LIST and
4591 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4592 CMUCL implementation by Gerd Moellmann)
4593 * fixed some bugs revealed by Paul Dietz' test suite:
4594 ** FORMAT strings with both the ~<~:;~> form of the justification
4595 directive and pretty-printing directives cause an error.
4597 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4598 * incompatible change: the internal functions
4599 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4600 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4601 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4602 instead of the old functions.
4603 * new feature: on platforms where "dladdr" is available foreign
4604 function names now appear in backtraces. (based on Helmut Eller's
4606 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4607 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4609 * documentation: ASDF manual is now distributed with SBCL.
4610 * bug fix: SBCL can now load its contributed modules with REQUIRE
4611 even if the system-provided entries have been removed from
4612 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4614 * bug fix: backtraces involving undefined functions or assembly
4615 routines are more informative. (thanks to Brian Downing)
4616 * bug fix: mutually referent alien structures now work correctly.
4617 (reported by Rick Taube)
4618 * bug fix: structures defined by WITH-ALIEN can be referred to
4619 within other definitions in the same WITH-ALIEN.
4620 * bug fix: division operators (MOD, TRUNCATE and the like) with
4621 constant zero divisors and integer dividends no longer generate
4623 * bug fix: provide default methods for INPUT-STREAM-P and
4624 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4625 * bug fix: improve the detection and resolution of MOP metacycles
4626 (where effective method computation depends on the generic function
4627 having its effective method computed). (reported by Bruno Haible)
4628 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4629 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4630 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4631 * bug fix: pathnames with relative directory components can be
4632 represented relative to default pathnames.
4633 * optimization: in taking the GCD of bignums, reduce the two bignums
4634 to approximately the same size (using Euclid's algorithm) before
4635 applying the more sophisticated binary GCD. (thanks to Juho
4637 * optimization: COUNT on bitvectors now operates word-at-a-time.
4638 * optimization: ASH with a positive, but not necessarily constant,
4639 (leftwards) shift, when in a modular context, is compiled to a
4641 * fixed some bugs revealed by Paul Dietz' test suite:
4642 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4643 if the corresponding argument is NIL.
4644 ** FORMAT directives accepting a minpad parameter treat negative
4646 ** literal commas as character parameters to FORMAT directives are
4648 ** literal spaces directly after ~<Newline> directives within a
4649 format-logical-block (~:< ~@:>) do not induce :FILL-style
4650 conditional newlines.
4651 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4652 as specified: it no longer includes conditional newlines).
4653 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4655 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4656 :PER-LINE-PREFIX argument does not evaluate to a string.
4658 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4659 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4660 the manual for details; for now, package locks can be disabled by
4661 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4662 if no major problems are found then it is likely that they will be
4663 compiled in unconditionally.
4664 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4665 unsupported operators on all platforms. To load a shared library
4666 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4667 object file, link it into a shared library outside of SBCL and
4668 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4670 * bug workaround: ROOM T and the GC were not working together
4671 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4672 reporting facility aren't preserved. That reporting has been
4673 disabled, so now until and unless someone figures out how to make it
4674 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4675 * minor incompatible change: as threatened around sbcl-0.8.0, the
4676 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4677 The symbols are also exported from SB-PCL for backwards
4678 compatibility, but more so than before SB-PCL should be treated as
4679 an implementation-internal package.
4680 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4682 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4683 It is known as of this release not to work on the Alpha, however.
4684 * fixed bug #167: errors signalled due to illegal syntax in method
4685 bodies are now more legible.
4686 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4687 designators and can hence be used with TYPEP.
4688 * fixed bug #333: CHECK-TYPE now ensures that the type error
4689 signalled, if any, has the right object to be accessed by
4690 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4691 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4692 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4694 * fixed bug #334: programmatic addition of slots using specialized
4695 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4696 and :ALLOCATION :CLASS slots.
4697 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4698 float exponents. (rereported by Peter Seibel)
4699 * fixed a bug: #\Space (and other whitespace characters) are no
4700 longer considered to be macro characters in standard syntax by
4701 GET-MACRO-CHARACTER.
4702 * fixed bug: initialization of condition class metaobjects no longer
4703 causes an instance of the condition to be created. (reported by
4705 * fixed bug: it is now possible to have slots such that
4706 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4707 description is neither :INSTANCE nor :CLASS.
4708 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4709 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4710 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4711 non-standard SLOT-DEFINITION-ALLOCATION values.
4712 * fixed bugs: various race conditions handling exiting threads.
4713 CL-PPCRE's thread torture test now passes.
4714 * fixed arguably-a-bug: GC time proportional to number of threads in
4715 system even when most of them are idle
4716 * optimization: improved performance of BIT and SBIT on bit-vectors.
4717 * .fasl file incompatibility: The fasl file version number has
4718 been incremented because of changes associated with package locks.
4720 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4721 * minor incompatible change: the system no longer provides
4722 optimization hints (conditions which are TYPEP
4723 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4724 mode; these hints are still emitted when higher SPEED optimization
4726 * new contrib module: a sampling profiler (profiling by statistical
4727 sampling, rather than by instrumenting functions) is available as
4728 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4729 * the behaviour of the standard function ED is now customizeable by
4730 third parties through a hook variable: see ED's documentation
4731 string for information on the protocol.
4732 * the compiler no longer emits efficiency notes for (FUNCALL X)
4733 when the type of X is uncertain under default optimization
4735 * fixed bug 276: mutating a binding of a specialized parameter to a
4736 method to something that is not TYPEP the specializer is now
4738 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4739 exhibit the required behaviour on the x86 platform. (thanks to
4740 Peter van Eynde, Eric Marsden and Bruno Haible)
4741 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4742 even for difficult arguments. (reported by Peter Graves)
4743 * fixed bug 141a: the backquote printer now descends quoted
4745 * fixed another bug in backquote printing: no more destructive
4746 modification of the form's list structure. (reported by Brian
4748 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4749 move between its address being taken and the call to
4750 interrupt_thread, fixing a crashing race condition.
4751 * the SB-POSIX contrib implementation has been adjusted so that it
4752 no longer exhibits ridiculously poor performance when constructing
4753 instances corresponding to C structs.
4755 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4756 * minor incompatible change: the sb-grovel contrib now treats C
4757 structures as alien (in the sense of SB-ALIEN) objects rather than
4758 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4759 has implications for memory management of client code
4760 (sb-grovel-returned objects must now be manually managed) and for
4761 type safety (alien objects now have full types).
4762 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4763 used to control emission of compiler diagnostics, rather than the
4764 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4765 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4766 quality should be considered deprecated.
4767 * install.sh now installs the user manual as well
4768 * (not quite a new documentable feature, but worth considering in
4769 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4770 beginnings of a semantically meaningful condition hierarchy is
4771 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4773 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4774 designator as the defaults argument.
4775 * fixed bug: Displaced arrays whose displaced-to array has become
4776 too small now cause ARRAY-DIMENSION to signal an error, providing
4777 for safer bounds-checking. (reported by Bruno Haible)
4778 * fixed bug: DEFCLASS slot definitions with identical :READER and
4779 :WRITER names now signal a reasonable error. (reported by Thomas
4781 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4783 * fixed bug: Invalid slot specification errors now print correctly.
4784 (thanks to Zach Beane)
4785 * fixed bug 320: Shared to local slot value transfers in class
4786 redefinitions now happen corrently from superclasses as
4787 well. (reported by Bruno Haible)
4788 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4790 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4791 improper lists correctly. (reported by Bruno Haible)
4792 * fixed bug 313: source-transform for <fun-name> was erroneously
4793 applied to a call of a value of a variable with name <fun-name>.
4794 (reported by Antonio Menezes Leitao)
4795 * fixed bug 307: The obsolete instance protocol ensures that
4796 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4797 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4798 remove dead unknown-values globs from the middle of the stack.
4799 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4800 easier to resume long computations after using *BREAK-ON-SIGNALS*
4801 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4802 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4803 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4804 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4805 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4806 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4808 * fixed a (fairly theoretical) bug in string printing: if
4809 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4810 does not have array-element-type equal to the most general string
4812 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4813 function name. (thanks to Nikodemus Siivola)
4814 * fixed bug: compile-time format string checker failed on
4815 non-closed ~{. (reported by Thomas F Burdick)
4816 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4817 don't warn on legal loop code involving more than one aggregate
4818 boolean. (thanks to Nikodemus Siivola)
4819 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4820 in keyword position to MAKE-PACKAGE was not being reported as
4822 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4823 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4825 * fixed bugs 280 and 312: the checking for multiple definitions in a
4826 file is less likely to become confused by uses of inline
4828 * fixed bug: the #S reader macro performs the keyword coercion
4829 specified for slot names. (reported by Kalle Niemitalo)
4830 * fixed bug: lambda lists may contain symbols whose names start with
4831 & but are not lambda-list-keywords; their occurrence triggers a
4833 * fixed bug 321: define-method-combination argument lambda lists do
4834 not cause invalid code to be generated when &optional or &aux
4835 variables have default values. (reported by Bruno Haible)
4836 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4837 have CLOS classes; this appears also to have fixed reported
4838 instability in stack exhaustion detection.
4839 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4840 MUFFLE-WARNING when no associated restart is present is now
4842 * optimization: rearranged the expansion of various defining macros
4843 so that each expands into only one top-level form in a
4844 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4846 * optimization: used a previously little-used slot in symbols to
4847 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4849 * fixed some bugs revealed by Paul Dietz' test suite:
4850 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4852 ** Fixed an optimization bug related to inheritance of initforms
4853 from local to shared slots.
4854 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4855 ** CAST optimizer forgot to flush argument derived type.
4856 ** print/read consistency on floats is now orders of magnitude
4857 more likely. (thanks also to Bruno Haible for a similar report
4859 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4860 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4861 for objects of type REAL. Make it so.
4862 ** SXHASH is specified (infelicitously) to respect similarity,
4863 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4864 it so. (thanks to Markus Ziegler)
4865 ** on the Alpha, the compiler succeeds in compiling functions
4866 returning a known number of arguments greater than 63.
4867 ** fixed handling of invalid NIL arguments in keyword position
4869 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4871 ** provided a readably-printable representation for RANDOM-STATE
4873 ** ensured that pathnames, where they have a namestring, always
4874 print using #P"..." syntax.
4876 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4877 * Support for the forthcoming 2.0 version of the NetBSD kernel
4878 running on x86 hardware has been added. (thanks to Perry
4879 E. Metzger most immediately, and others for their past work)
4880 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4881 current release version; SBCL's OpenBSD support had been broken
4882 since about the time of OpenBSD's switch to ELF binary format.)
4883 * [placeholder for DX summary]
4884 ** user code with &REST lists declared dynamic-extent, under high
4885 speed or space and low safety and debug optimization policy.
4886 * The manual has been converted to Texinfo format and the debugger
4887 chapter from the cmucl manual has been added.
4888 * A facility has been added to extract documentation strings from
4889 sbcl and store them as Texinfo-formatted snippets for inclusion in
4890 the manual (via Texinfo's @include directive)
4891 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4892 the test case to Dave Roberts)
4893 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4894 pointers. (reported by Sean Ross)
4895 * bug fix: PROFILE output is printed nicely even for large numerical
4896 values. (thanks to Zach Beane)
4897 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4898 greater than 32 handle EOF correctly.
4899 * bug fix: on X86 an immediate argument of the IMUL instruction is
4900 correctly printed in disassembly. (thanks to Lutz Euler)
4901 * bug fix: class slots in redefined classes preserve their old
4902 values. (thanks to Bruno Haible and Nikodemus Siivola)
4903 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4904 succeeds. (reported by Marco Baringer)
4905 * fixed some bugs revealed by Paul Dietz' test suite:
4906 ** READ-SEQUENCE now works on ECHO-STREAMs.
4907 ** RATIONALIZE works more according to its specification. (thanks
4910 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4911 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4912 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4913 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4914 should matter to you only if you rebind the printer control
4915 variables and then find you want different bindings in the
4916 debugger than in the ordinary execution of your program.)
4917 * The runtime build system has been tweaked to support building
4918 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4919 assembler and linker. (thanks to Nikodemus Siivola)
4920 * Unbound, undefined, undeclared variables now trigger full
4921 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4922 more often programmer error than deliberate exploitation of undefined
4924 * optimization: the hash algorithm for strings has changed to one
4925 that is less vulnerable to spurious collisions. (thanks to Juho
4927 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4928 needless bounds checking. (thanks to Juho Snellman)
4929 * optimization: implemented multiplication as a modular
4930 (UNSIGNED-BYTE 32) operation on the PPC backend.
4931 * fixed some bugs revealed by Paul Dietz' test suite:
4932 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4934 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4935 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4936 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4938 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4940 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4942 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4943 their output stream on EOF from read.
4944 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4945 have been read to end-of-file.
4946 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4948 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4949 description of determination of which consecutive characters
4951 ** Printing the "Space" character with escaping on now yields "#\\ ",
4952 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4953 ** Reading floating-point numbers with *READ-BASE* set to a number
4954 less than 10 works correctly.
4955 ** Reading floating-point numbers with *READ-BASE* set to a number
4956 more than 10 works correctly.
4957 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4958 the readtable currently in effect.
4960 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4961 * minor incompatible change: parsing of namestrings on a physical
4962 (Unix) host has changed; numbers after the final #\. in a
4963 namestring are no longer interpreted as a version field. This is
4964 intented to be largely invisible to the user, except that the
4965 meaning of the namestring "*.*.*" has changed: it now refers to a
4966 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4967 should usually be replaced by
4968 (make-pathname :name :wild :type :wild :version :wild)
4969 with the added benefit that this is more likely to be portable.
4970 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4971 option to OPEN now signals an error if the file being opened
4972 exists; this may have an impact on existing code.
4973 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4974 signals received, on the PowerPC platforms (both Linux and
4975 Darwin). (thanks to Pierre Mai for pointing out the location of
4977 * several fixes on OS X: The system now builds and runs cleanly on
4978 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4979 (thanks to Brian Mastenbrook)
4980 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4981 second-resolution: integer multiples of 1/3600 between -24 and 24.
4982 (thanks to Vincent Arkesteijn)
4983 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4984 type when called with 1 argument; PEEK-CHAR checked type of
4985 PEEK-TYPE only after having read first character from a
4986 stream. (reported by Peter Graves)
4987 * bug fix: the garbage collector now has much better locality
4988 behaviour, and in particular no longer treats all memory as being
4989 exhausted when many small objects point to each other in a deeply
4991 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4992 recognized as being TYPEP their class.
4993 * bug fix: the PUSHNEW documentation string has been corrected.
4994 (thanks to Vincent Arkesteijn)
4995 * bug fix: defaulting of the value for the last of an atypically
4996 large number of multiple values being bound was not being
4997 performed correctly on the Alpha or PPC platforms
4998 * optimization: implemented multiplication as a modular
4999 (UNSIGNED-BYTE 32) operation on the x86 backend.
5000 * optimization: SEARCH on simple-base-strings can now be open-coded.
5001 (see also contrib/compiler-extras.lisp for inspiration for
5002 teaching the compiler about the Boyer-Moore algorithm).
5003 * value, returned by MAX (and MIN) called with several EQUALP, but
5004 not EQL, arguments now does not depend on compiler settings.
5005 * fixed some bugs revealed by Paul Dietz' test suite:
5006 ** in stack analysis liveness information is propagated from
5007 non-local entry points.
5008 ** pathwise CAST removing failed when the CAST node did not start
5010 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5011 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5013 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5014 host is already defined.
5015 ** RENAME-FILE works on streams instead of signalling an internal
5017 ** PEEK-CHAR uses the current readtable when determining whether
5018 or not a character is whitespace.
5019 ** MERGE-PATHNAMES handles the case when the pathname does not
5020 specify a name while the default-pathname specifies a version.
5021 ** Pathnames now stand a better chance of respecting print/read
5023 ** Attempting to use standardized file system operators with a
5024 pathname with invalid :DIRECTORY components signals a
5026 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5028 ** DIRECTORY on logical pathnames is more correct.
5029 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5030 signal a TYPE-ERROR if their argument is not a stream.
5031 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5032 designator argument does not designate a stream.
5033 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5034 examining the synonym.
5035 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5037 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5038 element-type larger than ([UN]SIGNED-BYTE 32).
5040 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5041 * When built with the :SB-FUTEX feature, threaded builds now take
5042 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5043 for faster/more reliable mutex and condition variable support.
5044 * Incompatible change (but one you probably shouldn't have been using
5045 anyway): the interface and code for arbitrating between multiple
5046 threads in the same user session has been redesigned.
5047 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5048 error when called without an explicit environment argument.
5049 (thanks to Nikodemus Siivola)
5050 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5051 confused about their position. (thanks to Adam Warner and Gerd
5053 * bug fix: Pretty printing backquoted forms with unquotations in the
5054 argument list position of various code constructs such as LAMBDA
5055 now works correctly. (reported by Paul Dietz)
5056 * bug fix: Pretty printing unquotations no longer loses all
5057 stream position information.
5058 * optimization: performance of string output streams is now less
5059 poor for multiple small sequence writes.
5060 * optimization: performance of CSUBTYPEP in the presence of complex
5061 expressions involving CONS and NOT many times has been improved.
5062 (reported by Paul Dietz)
5063 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5065 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5066 streams for the REPL, for the debugger, and so on. (thanks to
5068 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5069 * fixed some bugs revealed by Paul Dietz' test suite:
5070 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5071 is ignored if it is too small, rather than propagating through
5072 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5073 ** extremely complex negations of CONS types were not being
5074 sufficiently canonicalized, leading to inconsistencies in
5076 ** VALUES tranformer lost derived type.
5078 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5079 * fixed a bootstrapping bug: the build process no longer assumes
5080 that the various BOOLE-related constants have the same value in
5081 host and target lisps. (noted by Paul Dietz' test suite on an
5082 SBCL binary built from CLISP)
5083 * The system can now be dynamically linked on the MIPS platform,
5084 which enables dynamic loading of foreign code from Lisp. (thanks
5085 to Ralf Baechle for discussions on the MIPS ABI)
5086 * The system now records debugging information for its own source
5087 files in a filesystem-position-independent manner, relative to
5088 the "SYS" logical host.
5089 * fixed a compiler bug: MV-LET convertion did not check references
5090 to the "max args" entry point. (reported by Brian Downing)
5091 * tweaked disassembly notes to be less confident about proclaiming
5092 some instruction as an LRA. (thanks to Brian Downing)
5093 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5094 now each have their own history, command character, and other
5095 characteristics. (thanks to David Lichteblau)
5096 * fixed some bugs revealed by Paul Dietz' test suite:
5097 ** compiler failure in compiling LOGAND expressions including a
5099 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5100 shift greater than 32.
5101 ** FLUSH-DEST did not mark blocks for type check regeneration.
5102 ** HANDLER-CASE failed to accept declarations in handler clauses
5103 in some circumstances.
5105 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5106 * New code in contrib/sb-introspect (still probably not entirely
5107 stable yet) provides some support for smart Lisp development
5108 environments like SLIME.
5109 * The conditions signalled for errors occurring when loading .fasl
5110 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5111 in a way which should help ASDF recover gracefully.
5112 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5113 stuff has been cleaned up. If you code contrib/ stuff, this might
5114 affect you, and you can look at contrib/README, contrib/STANDARDS,
5115 and/or the 0.8.4.27 diff to check.
5116 * In full calls the compiler now does not generate checks for declared
5117 argument types for all arguments.
5118 * various threading fixes
5119 ** and some experimental patches which didn't make it into
5120 the main tree for this release, but which are shipped in
5121 contrib/experimental-thread.patch as a possible fix for some
5122 failures (deadlock, spinning...) in GC-intensive multithreaded
5124 * fixed PPC build problem (source code incompatibility of different
5125 library versions): added offsetof() hackery which attempts to divine
5126 where glibc maintainers put uc_mcontext today
5127 * fixed bug 282: compiler does not trust type assertions while passing
5128 arguments to a full call.
5129 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5130 &OPTIONAL VALUES type parameter.
5131 * fix bug 214: algorithm for noting rejected templates is now more
5132 similar to that of template seletion. (also reported by rydis on
5134 * fixed bug 141b: printing backquoted information readably and prettily
5135 inserts a space where necessary.
5136 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5137 (CHARACTER 10) are now reported as errors, rather than propagated
5138 as unknown types. (reported by piso on #lisp)
5139 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5140 with values NIL and :ERROR. (thanks to Milan Zamazal)
5141 * fixed bug 191c: CLOS now does proper keyword argument checking as
5142 described in CLHS 7.6.5 and 7.6.5.1.
5143 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5144 longer raise an error; further, using a list as a for-as-arithmetic
5145 counter now raises a meaningful error.
5146 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5147 now understood by sequence creation functions such as MAKE-SEQUENCE
5149 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5150 a STRING-INPUT-STREAM.
5151 * compiler enhancement: SIGNUM is now better able to derive the type
5153 * type declarations inside WITH-SLOTS are checked. (reported by
5155 * fixed some bugs revealed by Paul Dietz' test suite:
5156 ** incorrect optimization of TRUNCATE for a positive first
5157 argument and negative second.
5158 ** compiler failure in let-convertion during flushing dead code.
5159 ** compiler failure while deriving type of TRUNCATE on an
5160 interval, containing 0.
5161 ** ASH of a negative bignum by a negative bignum count now returns
5163 ** intersection of CONS types now canonicalizes properly, fixing
5164 inconsistencies in SUBTYPEP.
5166 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5167 * incompatible change: The --disable-debugger command line
5168 option now clobbers the debugger at a more fundamental
5169 level, by redefining #'INVOKE-DEBUGGER instead of by
5170 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5171 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5172 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5173 enter the debugger REPL and then suffer recursive errors
5174 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5175 while under the new system, BREAK in --disable-debugger mode
5176 terminates the system just as an unhandled error would.
5177 * fixed compiler performance when processing loops with a step >1;
5178 * bug fix: DOCUMENTATION now retrieves generic function
5179 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5180 support has been systematized, and now supports the methods
5181 specified by ANSI, along with a default method and a method for
5182 slot documentation. (reported by Nathan Froyd)
5183 * bug fix: effective methods associated with a generic function are
5184 no longer cached over a change of that generic function's method
5185 combination. (reported by Andreas Fuchs)
5186 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5187 names a non-existent directory. (thanks to Andreas Fuchs)
5188 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5189 the PPC platform, lead to stack corruption; this has been fixed.
5190 (reported by Rainer Joswig)
5191 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5192 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5193 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5194 arithmetic in general, is now much more reliable on the PPC
5196 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5197 platform now returns the right answer.
5198 * optimization: restored some effective method precomputation in
5199 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5200 precomputation is now tunable.
5201 * optimization: compiler-internal data structure use has been
5202 reviewed, and changes have been made that should improve the
5203 performance of the compiler by about 20%.
5204 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5205 simple-base-strings and simple-bit-vectors is improved.
5206 * optimization: the optimization of 32-bit logical and arithmetic
5207 functions introduced in version 0.8.3 on the x86 has been
5208 implemented on the mips, ppc and sparc platforms; an
5209 implementation of the same facility, but for 64-bit arithmetic,
5210 has been added for the alpha.
5211 * microoptimization: the compiler is better able to make use of the
5212 x86 LEA instruction for multiplication by constants.
5213 * bug fix: in some situations compiler did not report usage of
5214 generic arithmetic in (SPEED 3) policy.
5215 * bug 145b fix: compiler used wrong type specifier while converting
5216 MEMBER-types to numeric.
5217 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5219 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5220 index argument now works properly on the Alpha platform.
5221 * bug fix: floating point exception treatment on the Alpha platform
5223 * bug fix: FILE-POSITION works much better on string input and
5224 output streams. (thanks to Nikodemus Siivola)
5225 * bug fix: many threading/garbage collection symptoms sorted.
5226 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5227 might be pseudo-atomic.
5228 * internal change: Stopping for GC is now done with signals not
5229 ptrace. GC is now done in whichever thread wanted it, instead of
5231 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5233 * bug fix: result form in DO is not contained in the implicit
5235 * incompatible change: ICR structure is changed; the value part of
5236 CONTINUATION is now called LVAR; corresponding functions are
5237 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5238 * added type deriver for ISQRT (thanks to Robert E. Brown).
5239 * bug fix: better support for loading from the command line when an
5240 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5242 * fixed some bugs revealed by Paul Dietz' test suite:
5243 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5244 ** ROUND and FROUND now give the right answer when given very
5245 small float arguments.
5246 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5248 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5249 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5250 ** LCM should return a non-negative integer.
5251 ** PARSE-INTEGER returned the index of a terminator instead of the
5252 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5253 ** PARSE-INTEGER returned an incorrect index being applied to a
5255 ** LCM with two arguments of 0 returns 0 rather than signalling
5257 ** unsigned addition of a 32-bit constant with the high bit set no
5258 longer causes an internal compiler error on the x86.
5259 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5260 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5261 with negative last argument.
5262 ** byte specifiers with zero size and position no longer cause
5263 an error during type derivation.
5264 ** bignum multiplication on the Alpha platform now returns the
5266 * porting: The system now builds on SuSE AMD64, although it still
5267 generates a 32-bit binary.
5268 * .fasl file incompatibility: The fasl file version number has
5269 been incremented (because of the changes to internal compiler
5270 data structures referred to above).
5272 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5273 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5274 more accurately, on the Darwin kernel running on PowerPC hardware.
5275 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5276 * Compiler code deletion notes now signal a condition of type
5277 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5278 an associated MUFFLE-WARNING restart.
5279 * The compiler now performs limited argument count validation of
5280 constant format strings in FORMAT, and where appropriate in ERROR,
5281 CERROR and WARN. (thanks to Gerd Moellmann)
5282 * New ASDF-INSTALL contrib can be used for automatic download and
5283 installation of third-party Lisp code from CCLAN or other sites
5285 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5286 which forces another thread to execute a function supplied by the
5288 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5289 now accept and act upon their :ELEMENT-TYPE keyword argument.
5290 (reported by Martin Atzmueller, Edi Weitz)
5291 * bug fix: FILE-POSITION now accepts position designators up to
5292 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5293 is the greater. (thanks to Patrik Nordebo)
5294 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5295 Kalle Olavi Niemitalo)
5296 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5297 printable. (reported by Eric Marsden)
5298 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5299 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5300 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5301 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5302 (thanks to Stig Sandoe)
5303 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5304 UNREAD-CHAR now correctly includes the unread character in the
5305 target sequence. (thanks to Gerd Moellmann)
5306 * bug fix in threaded builds: the system can now be suspended and
5307 resumed by shell job control with minimal disruption.
5308 * bug fixes in times and timezones >2038AD
5309 * better handling of "where is GNU make?" problem in build scripts
5310 (thanks to Nikodemus Siivola)
5311 * new optimization: inside a named function any reference to a
5312 function with the same name is considered to be a self-reference;
5313 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5314 optimization quality.
5315 * new optimization on x86: logical functions and + now have
5316 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5317 used when the result is truncated to 32 bits.
5318 * VALUES declaration is partially enabled.
5319 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5320 * fixed some bugs revealed by Paul Dietz' test suite:
5321 ** The system now obeys the constraint imposed by
5322 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5323 types form a lattice under type intersection.
5324 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5325 ** ASSOC now ignores NIL elements in an alist.
5326 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5327 and (1+ MOST-POSITIVE-FIXNUM) answers.
5328 ** The addition of a method with invalid qualifiers to a generic
5329 function does not cause an error to be signalled immediately;
5330 a warning is signalled, and the error is generated only on
5331 calling the generic function.
5332 * changed .fasl file version number, in part to add type codes for
5333 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5334 obscure ANSI requirements
5336 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5337 * fixed bug 148: failure to inline-expand a local function left
5338 garbage, confusing the compiler.
5339 * fixed bugs 3cd: structure slot readers perform type check if the
5340 slot can have an invalid value (i.e. it is either not initialized
5341 or can be written with a less specific slot writer).
5342 * bug fix: the compiler now traps array references to elements off
5343 the end of an array; previously, the bounds checking in some
5344 circumstances could go off-by-one.
5345 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5347 * type declarations for array element types now obey the description
5348 on the CLHS page "Declaration TYPE", as per discussions on
5349 sbcl-help around 2003-05-08. This means that a declaration
5350 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5351 declaration, all references to BAR will be asserted or assumed
5352 (with THE, so dependent on compiler policy) to involve objects of
5353 type FOO. Note that no such declaration is implied in
5354 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5355 * declared types of functions from the "Conditions"
5356 chapter. (reported by Paul Dietz)
5357 * bug fix: CERROR accepts a function as its first argument.
5358 * bug fix: NTH an NTHCDR accept a bignum as index
5359 arguments. (reported by Adam Warner)
5360 * optimization: character compare routines now optimize comparing
5361 against a constant character. (reported by Gilbert Baumann)
5362 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5363 argument now works properly on the MIPS platform.
5364 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5365 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5366 declared to have a functional type, does not cause an error
5368 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5369 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5370 * fixed bug: if last continuation of a deleted block has a
5371 destination, this destination should be deleted too. (reported by
5373 * fixed a bug in the bootstrap process: the host compiler's values
5374 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5375 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5376 test case from Patrik Nordebo)
5377 * improved the ability of the disassembler on the PPC platform to
5378 provide helpful disassembly notes.
5379 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5380 the class in more cases than previously.
5381 * bug fix: FILE-POSITION now understands :START and :END for
5382 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5383 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5384 8) data. (thanks to David Lichteblau)
5385 * bug fix: it is possible to add a method to a generic function
5386 without lambda list.
5387 * bug fix: reader failed to signal END-OF-FILE inside an
5388 object representation. (reported by Nikodemus Siivola)
5389 * fixed some bugs revealed by Paul Dietz' test suite:
5390 ** LAST and [N]BUTLAST should accept a bignum.
5391 ** condition slot accessors are methods.
5392 ** (VECTOR NIL) is a subtype of STRING.
5394 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5395 * minor incompatible change: some nonsensical specialized lambda
5396 lists (used in DEFMETHOD) which were previously ignored now signal
5398 * minor incompatible change: the system is now aware of the types of
5399 variables in the COMMON-LISP package, and will signal errors for
5400 most violations of these type constraints (where previously they
5401 were silently accepted).
5402 * minor incompatible change: COMPILE-FILE now uses the freedom
5403 afforded (ANSI 3.2.2.3) to use derived function types for
5404 functions defined in the same file. This also permits the system
5405 to warn on static type mismatches and function
5406 redefinition. (Currently it does not work with high DEBUG level.)
5407 * minor incompatible change: VALUES declaration is disabled.
5408 * When issuing notes, the compiler now signals a condition of type
5409 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5410 restart for use in user handlers. It is expected that the
5411 COMPILER-NOTE condition will eventually become a condition
5412 supertype to a hierarchy of note types, which will then be
5413 handleable in a similar fashion. However, at the moment, no such
5414 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5415 but it's an implementation detail, not a classification for the
5417 * Changes in type checking closed the following bugs:
5418 ** type checking of unused values (192b, 194d, 203);
5419 ** template selection based on unsafe type assertions (192c, 236);
5420 ** type checking in branches (194bc).
5421 * A short form of VALUES type specifier has ANSI meaning (it has
5422 increased the number of situations when SBCL cannot perform type
5424 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5425 keywords or constants is permissible.
5426 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5427 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5428 classes. (thanks to Antonio Martinez)
5429 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5430 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5431 argument to a pretty-print stream. Instead, it leaves any such
5432 operations to DESCRIBE-OBJECT methods.
5433 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5435 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5436 lambda lists. (thanks to David Lichteblau)
5437 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5438 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5439 (thanks to Gerd Moellmann)
5440 * fixed bug 246: increased compilation speed of long
5441 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5443 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5445 * DEFCONSTANT now throws a condition of type
5446 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5447 constant to a non-EQL value; CONTINUE and ABORT restarts
5448 respectively change and preserve the value.
5449 * fixed bug 63: The code walker, part of the implementation of CLOS,
5450 is now better at handling symbol macros.
5451 * bug fix: There is no longer an internal implementation type named
5452 CL:LENGTH. (reported by Raymond Toy)
5453 * bug fix: In macro-like defining macros/special operators the
5454 implicit block does not enclose the lambda list.
5455 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5456 enclosed in parentheses) are not suitable as type specifiers, and
5457 their use properly signals an error now.
5458 * bug fix: An argument count mismatch for a type specifier in code
5459 being compiled no longer causes an unhandled error at compile
5460 time, but signals a compile-time warning.
5461 * fixed simple vector readable printing
5462 * bug fix: DESCRIBE takes more care over whether the class
5463 precedence list slot of a class is bound before accessing it.
5464 (reported by Markus Krummenacker)
5465 * bug fix: FORMATTER can successfully compile pretty-printer format
5466 strings which use variants of the ~* directive inside.
5467 * bug fix: SEARCH now applies its TEST predicate to the elements of
5468 the arguments in the correct order. (thanks to Wolfhard Buss)
5469 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5470 in type inference. (thanks to Robert E. Brown)
5471 * bug fix: Reading in symbols with an explicit package name of ""
5472 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5473 * fixed some bugs revealed by Paul Dietz' test suite:
5474 ** NIL is now allowed as a structure slot name.
5475 ** Arbitrary numbers, not just REALs, are allowed in certain
5476 circumstances in LOOP for-as-arithmetic clauses.
5477 ** Multiple class redefinitions before slot access no longer
5478 causes a type error.
5479 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5480 association between the name and a class.
5481 ** Generic functions with non-standard method-combination and over
5482 five methods all of which return constants no longer return NIL
5483 after the first few invocations. (thanks to Gerd Moellmann)
5484 ** CALL-NEXT-METHOD with no arguments now passes the original
5485 values of the arguments, even in the presence of assignment.
5486 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5488 ** DISASSEMBLE works with closures and funcallable instances.
5489 ** ADD-METHOD now returns the generic function, not the new method.
5490 ** FIND-METHOD signals an error if the lengths of the specializers
5491 is incompatible with the generic function, even if the ERRORP
5493 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5494 which its argument is a member.
5495 ** DEFCLASS only redefines the class named by its class-name
5496 argument if that name is the proper name of the class;
5497 otherwise, it creates a new class.
5498 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5499 of the UNBOUND-SLOT condition to the name of the slot.
5500 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5501 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5502 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5503 SLOT-MAKUNBOUND in the specified fashion.
5505 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5506 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5507 cross-compilation host. As a consequence, we can now bootstrap our
5508 way up to SBCL starting with a bare gcc toolchain and human-readable
5509 source code (first the source to CLISP, then the source to SBCL).
5510 * A contributed module containing a partial implementation of the
5511 simple-streams interface has been included. (thanks to Rudi
5513 * A contributed module implementing the RFC1321 Message Digest
5514 Algorithm, known as MD5, has been included.
5515 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5516 no longer has any effect, as the code controlled by this feature
5517 has been deleted. (As far as we know, no-one has ever built using
5518 this feature, and its semantics were confused in any case).
5519 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5520 work on conditions (as required by the ANSI specification),
5521 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5522 expected behaviour on conditions. Users should note, however,
5523 that such behaviour is not required by the ANSI specification,
5524 and so use of this behaviour may render their code unportable.
5525 * fixed some bugs revealed by Paul Dietz' test suite:
5526 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5528 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5529 ** SXHASH on condition objects no longer returns NIL.
5530 ** :ALLOCATION :CLASS slots are better treated; their values are
5531 updated on class redefinition, and initforms inherited from
5532 superclasses are applied.
5533 ** REMOVE-METHOD returns its generic function argument even when
5534 no method was removed.
5535 ** SHARED-INITIALIZE now initializes the values of the requested
5536 slots, including those with :ALLOCATION :CLASS.
5537 ** ALLOCATE-INSTANCE now works on structure classes defined via
5538 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5540 ** SLOT-EXISTS-P now works on conditions, as well as structures
5542 ** MAKE-LOAD-FORM now has the required methods on
5543 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5544 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5545 keyword, and now implements the SLOT-NAMES argument.
5546 ** methods with &OPTIONAL arguments no longer allow too many
5547 arguments to be passed in the call without error.
5548 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5549 option is consistent with the required arguments of the generic
5550 function lambda list.
5551 * bug fix: REQUIRE accepts a string designator. (Thanks to
5553 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5554 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5555 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5556 * bug fix: The compiler now checks for duplicated variables in macro
5558 * bug fix: SETQ on globals returns the correct value.
5559 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5560 not a COMPILER-ERROR (followed by some other strange error on
5561 choosing the CONTINUE restart).
5562 * bug fix: make.sh and friends are now more consistent in the way that
5563 they look for GNU "make".
5565 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5566 * experimental native threads support (on x86 Linux >=2.4 only).
5567 This is not compiled in by default: you need to add :SB-THREAD to
5568 the target features. See the "Beyond ANSI" chapter of the manual
5570 * fix for longstanding nonANSIism: The old distinction between
5571 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5572 The return value from CL:FIND-CLASS is now a CLOS class, and
5573 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5574 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5575 * An interface to the MetaObject Protocol, as described in Kiczales,
5576 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5577 MIT Press, 1991, is available from the SB-MOP package.
5578 * incompatible change: the SB-PCL package should now be considered
5579 a private implementation detail, and no longer a semi-private MOP
5581 * minor incompatible change: due to rearrangement for threads, the
5582 control stack and binding stack are now allocated at arbitrary
5583 addresses instead of being hardcoded per-port. Users affected by
5584 this probably have to be doing advanced things with shared
5585 libraries, and will know who they are.
5586 * minor incompatible change: Previously, all --eval forms used were
5587 processed with READ before any of them were processed with EVAL.
5588 Now each --eval form is processed with both READ and EVAL before
5589 the next --eval form is processed. (Thus package operations like
5590 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5591 work as the user might reasonably expect.)
5592 * minor incompatible change: *STANDARD-INPUT* is now only an
5593 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5595 * minor incompatible change: Y-OR-N-P is now character-oriented,
5596 not line oriented. Also, YES-OR-NO-P now works without errors.
5597 (thanks to Antonio Martinez)
5598 * sb-aclrepl module improvements: an integrated inspector, added
5599 repl features, and a bug fix to :trace command.
5600 * Known functions, which cannot be open coded by the backend, are
5601 considered to be able to check types of their arguments. (fixing
5602 a bug report by Nathan J. Froyd)
5603 * fixed a bug in computing method discriminating functions: It is
5604 now possible to define methods specialized on classes which have
5605 forward-referenced superclasses. (thanks to Gerd Moellmann)
5606 * fixed evaluation order in optional entries (reported by Gilbert
5608 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5609 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5610 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5611 required-by-AMOP NAME argument, as well as CLASS and
5612 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5613 * fixed bug 20: DEFMETHOD can define methods using names that are
5614 not the proper names of classes to designate class specializers.
5615 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5616 Unix file descriptors, instead of blowing up. (thanks to Antonio
5618 * Garbage collection refactoring: user-visible change is that a
5619 call to the GC function during WITHOUT-GCING will not do garbage
5620 collection until the end of the WITHOUT-GCING. If you were doing
5621 this you were probably losing anyway.
5622 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5623 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5624 TYPEP the latter but not the former.
5625 * The compiler issues a full WARNING for calls to undefined functions
5626 with names from the CL package.
5627 * MAP-INTO for a vector destination is open coded. (reported by
5628 Brian Downing on c.l.l)
5629 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5630 documentation string.
5631 * fixed some bugs revealed by Paul Dietz' test suite:
5632 ** COPY-ALIST now signals an error if its argument is a dotted
5634 ** Condition slots are now accessed more correctly in the presence
5635 of multiple initargs for a given slot.
5636 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5637 exclude restarts of the same name associated with a different
5639 ** DEFCLASS of forward-referenced classes with another
5640 forward-referenced class in the superclasses list no longer
5642 ** Condition slots are now initialized once each, not multiple
5643 times. (thanks to Gerd Moellmann)
5644 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5646 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5647 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5648 arguments contain duplicated elements.
5649 ** RESTART-CASE understands local macros.
5650 ** RESTART-CASE associates exactly its own restarts with a condition.
5651 ** ENDP in safe mode checks its argument to be of type LIST.
5652 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5653 in question is unbound.
5654 ** Optimized MAKE-INSTANCE functions no longer cause internal
5655 assertion failures in the presence of duplicate initargs.
5656 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5657 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5658 propagated even in the ctor optimized implementation of
5660 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5662 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5663 * a better implementation of SXHASH on (simple) bit vectors,
5664 measured both in execution speed and in distribution of results
5665 over the positive fixnums, has been installed. Likewise, a better
5666 implementation of EQUAL for simple bit vectors is now available.
5667 * fixed CEILING optimization for a divisor of form 2^k.
5668 * fixed bug 240 (emitting extra style warnings "using the lexical
5669 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5670 by Antonio Martinez)
5671 * fixed SXHASH, giving different results for NIL depending on type
5672 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5673 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5674 variable. (found by Rolf Wester)
5675 * SBCL does not ignore type declarations for special
5676 variables. (reported by rif on c.l.l 2003-03-05)
5677 * some bug fixes in contrib/sb-aclrepl/
5678 * fixed some bugs revealed by Paul Dietz' test suite:
5679 ** a bug in the CONS type specifier, whereby the CAR and CDR
5680 types got intertwined, has been fixed;
5681 ** the type system is now able to reason about the interaction
5682 between INTEGER and RATIO types more completely;
5683 ** APPEND, [N]REVERSE and NRECONC check that those their
5684 arguments, which must be proper lists, are really so;
5685 ** An array specialized to be unable to hold elements has been
5686 implemented, as required -- yes, really -- by ANSI;
5687 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5688 on malformed property lists;
5690 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5691 * incompatible packaging change: in line with Unix convention,
5692 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5693 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5694 * REQUIRE and PROVIDE are now optionally capable of doing something
5695 useful. See the documentation string for REQUIRE.
5696 * infrastructure for a managed SBCL contrib system: contributed
5697 modules in this release include:
5698 ** the ASDF system definition facility;
5699 ** an interface to the BSD Sockets API;
5700 ** an ACL-like convenience interface to the repl;
5701 (thanks to Kevin Rosenberg)
5702 ** an implementation of ROTATE-BYTE, with efficient implementation
5704 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5705 gives a closer approximation to the right answer than previously.
5706 (thanks to Raymond Toy)
5707 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5708 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5709 optional environment arguments, as required by ANSI.
5710 * fixed bugs in other functions taking environment objects, allowing
5711 calls with an explicit NIL environment argument to be compiled
5713 * fixed bug 228: primary return values from
5714 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5715 COMPILE or FUNCTION.
5716 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5717 :TYPE will no longer signal errors on innocuous objects.
5718 * fixed bug 231b: SETQ is better at respecting type declarations in
5719 the lexical environment.
5720 * fixed a bug in DEFCLASS: classes named by symbols with no or
5721 unprintable packages can now be defined.
5722 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5723 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5724 * fixed compiler failure related to checking types of functions.
5725 (reported by Robert E. Brown)
5726 * the compiler is now much more consistent in its error-checking
5727 treatment of bounding index arguments to sequence functions: in
5728 (SAFETY 3) code, errors will be signalled in almost all cases if
5729 invalid sequence bounding indices are passed to functions defined
5730 by ANSI to operate on sequences.
5731 * fixed a bug in the build procedure: documentation of SBCL-specific
5732 packages is now preserved and available in the final Lisp image.
5733 * lifted FDEFINITION lookup out of loops in the implementation of
5734 many list operations. (thanks to Robert E. Brown)
5735 * fixed a bug in the reader: the #n# reader macro now works for
5736 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5737 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5738 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5739 E. Brown and Tony Martinez respectively)
5740 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5741 SLOT-BOUNDP: in particular, it is now able to optimize them much
5742 better, and is now not vulnerable to having packages renamed.
5743 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5744 always called when a slot is not present in an instance. (thanks
5746 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5747 longer signal an error on unreading a character following EOF on
5748 the previous constituent stream. (thanks to Tony Martinez)
5749 * fixed some bugs revealed by Paul Dietz' test suite:
5750 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5751 not just nonnegative fixnums;
5752 ** the logical bit-array operators such as BIT-AND now accept an
5753 explicit NIL for their "opt-arg" argument (to indicate a
5754 freshly-consed result bit-array);
5755 ** ELT now signals an error on an invalid sequence index in safe
5757 ** the type system is now cleverer about negations of numeric
5758 types, and consequently understands the BIGNUM and RATIO types
5760 ** the type system is now cleverer about the interaction between
5761 INTEGER and RATIO types: while bugs still remain, many more
5762 cases are accurately computed;
5763 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5764 if it is in the last clause;
5765 ** CONSTANTLY now correctly returns a side-effect-free function in
5767 ** DECLARE is no longer treated as a special-operator; in
5768 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5769 * incremented fasl file version number due to the change in the
5770 DEFSTRUCT-SLOT-DESCRIPTION structure.
5772 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5773 * minor incompatible change: code processed by the "interpreter" or
5774 EVAL now has a compilation optimization policy of (DEBUG 2)
5775 (changed from (DEBUG 1)) to improve debuggability of interactive
5776 development, and to allow the use of the debug RETURN command in
5778 * an experimental implementation of the RETURN command for the
5779 debugger has been included. (thanks to Frederik Kuivinen)
5780 * fixed bug 62: constraints were not propagated into a loop.
5781 * fixed bug in embedded calls of SORT (reported and investigated by
5783 * fixed some bugs revealed by Paul Dietz' test suite:
5784 ** printing and reading of arrays with some dimensions having
5785 length 0 (thanks to Gerd Moellmann);
5786 ** BOA constructor with &AUX argument without a default value does
5787 not cause a type error;
5788 ** CONSTANTP now returns true for all self-evaluating objects.
5790 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5791 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5792 accessors that are related by inheritance, as specified in the
5793 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5794 Valtteri Vuorikoski)
5795 * The compiler is now able to inline functions that were defined in
5796 a complex lexical environment (e.g. inside a MACROLET).
5797 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5799 * Support for the upcoming FreeBSD-5.0 release has been included.
5800 (thanks to Dag-Erling Smorgrav)
5801 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5802 effect when it is not in a toplevel context.
5803 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5804 stand a better chance of being correct. (thanks to Gerd
5806 * fixed bug in COERCE, which now signals an error on coercing a
5807 rational to a bounded real type which excludes the expected
5809 * The compiler is now able to derive types more accurately from the
5810 COERCE and COMPILE functions.
5811 * fixed bug 223: functional binding is considered to be constant
5812 only for symbols in the CL package.
5813 * fixed bug 231: SETQ did not check the type of a variable being set
5814 (reported by Robert E. Brown)
5815 * A new optimization for MAKE-INSTANCE has been included, fixing
5816 various bugs (including relating to :ALLOCATION :CLASS slots and
5817 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5819 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5820 ** As required by ANSI, LOOP now disallows anonymous collection
5821 clauses such as COLLECT I in conjunction with aggregate boolean
5822 clauses such as THEREIS (= I 1);
5823 ** LOOP now signals an error when any variable is reused in the
5824 same loop (including the potentially useful construct analogous
5825 to WITH A = 1 WITH A = (1+ A);
5826 ** IT is only a special loop symbol within the first clause of a
5827 conditional loop clause;
5828 ** LOOP with a typed iteration variable over a hashtable now
5829 signals a type error iff it should.
5830 * fixed some other bugs revealed by Paul Dietz' test suite:
5831 ** FILE-STREAM now names the class previously known as FD-STREAM;
5832 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5833 argument) no longer signals an error;
5834 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5835 of the slot symbol, rather than using the current package
5836 ((:CONC-NAME "") continues to intern the slot's name in the
5838 * incremented fasl file version number, because of the incompatible
5839 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5840 of the new implementation of DEFINE-COMPILER-MACRO.
5842 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5843 * Support for building SBCL for MIPS platforms running in
5844 little-endian mode has now been checked in, and basic
5845 functionality on said platforms verified.
5846 * minor incompatible change: PCL now records the pathname of a file
5847 in which methods and the like are defined, rather than its
5849 * minor incompatible change: TRUENAME now considers the truename of
5850 a file naming a directory to be the pathname with :DIRECTORY
5851 component indicating that directory.
5852 * minor incompatible change: a NAMED clause in the extended form of
5853 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5854 reason for the previous behaviour is unclear.
5855 * more systematization and improvement of CLOS and MOP conformance
5856 in PCL (thanks to Gerd Moellman and Pierre Mai):
5857 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5859 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5860 primary methods with no specializers;
5861 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5863 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5864 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5865 FORWARD-REFERENCED-CLASSes; error reporting on
5866 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5868 ** SXHASH on CLOS instances now uses a slot internal to the
5869 instance to return different numbers on distinct instances,
5870 while preserving the same return value through invocations of
5872 ** DEFMETHOD signals errors when methods with longer incongruent
5873 lambda lists are added to generic functions;
5874 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5875 CLASS, as specified in AMOP;
5876 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5877 on the order returned by the primary method for classes of
5878 class STANDARD-CLASS;
5879 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5880 * fixed some bugs shown by Paul Dietz' test suite:
5881 ** DOLIST puts its body in TAGBODY;
5882 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5884 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5885 value producing form;
5886 ** if more variables are given to PROGV than values, extra
5887 variables are bound and made to have no value;
5888 ** NSUBSTITUTE on list arguments gets the right answer with
5890 ** ELT signals an error of type TYPE-ERROR when the index argument
5891 is not a valid sequence index;
5892 ** LOOP signals (at macroexpansion time) an error of type
5893 PROGRAM-ERROR when duplicate variable names are found;
5894 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5895 ** FUNCALL of special-operators now cause an error of type
5897 ** PSETQ now works as required in the presence of side-effecting
5898 symbol-macro places;
5899 ** NCONC accepts any object as its last argument;
5900 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5902 ** loop-for-as-package does not require a package to be explicitely
5904 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5906 * fixed bug 166: compiler preserves "there is a way to go"
5907 invariant when deleting code.
5908 * fixed bug 172: macro lambda lists with required arguments after
5909 &REST arguments now cause an error to be signalled. (thanks to
5911 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5912 bug. (thanks to Matthew Danish)
5913 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5915 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5916 arguments are lexically rebound. (thanks to Gerd Moellmann and
5918 * fixed bug 194: error messages are now more informative when there
5919 is no primary method applicable in a call to a generic
5920 function. (thanks to Gerd Moellmann)
5921 * fixed bug in command line argument checking (thanks to Julian
5923 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5924 (thanks to Matthew Danish)
5925 * incremented fasl file version number, because of the
5926 SXHASH-related changes in the layout of CLOS data structures
5928 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5929 * minor incompatible change: The runtime (the Unix executable named
5930 "sbcl") is now much pickier about the .core files it will load.
5931 Essentially it now requires .core files to descend from the same
5932 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5933 as the runtime does. (The intent is to prevent the crashes which
5934 can occur, and which can even be reported as mysterious failures,
5935 when people patch the sources or change the build parameters
5936 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5937 sbcl and .core files.)
5938 * fixed bug: VALUES-LIST is no longer optimized away.
5939 * fixed bug 142: The FFI conversion of C string values to Lisp
5940 string values no longer conses excessively. (thanks to Nathan
5941 Froyd porting Raymond Toy's fix to CMU CL)
5942 * began to systematize and improve MOP conformance in PCL (thanks to
5943 Nathan Froyd, Gerd Moellman and Pierre Mai):
5944 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5946 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5947 ** FINALIZE-INHERITANCE is now called on class finalization;
5948 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5949 argument precedence order.
5950 * fixed bug 202: The compiler no longer fails on functions whose
5951 derived types contradict their declared type.
5952 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5953 so it can be non-toplevel.
5954 * The fasl file version number has changed (because of the new
5955 implementation of DEFMACRO).
5956 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5957 safe code, that any length requirement by their type-specifier
5958 argument is valid. The exceptions to this are described in bug
5960 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5961 functions now check the types of their inputs as required by ANSI.
5962 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5963 introduced symbol is DECLAREd to be SPECIAL.
5964 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5965 * fixed bug: :COUNT argument to sequence functions may be negative
5966 * fixed bug: body of DO-SYMBOLS may contain declarations
5967 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5968 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5969 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5970 symbol macro only once
5971 * fixed printing of call frame when argument list is unavailable
5972 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5973 * compiler no longer signals WARNING on unknown keyword
5976 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5977 * A beta-quality port to the mips architecture running Linux,
5978 based on the old CMUCL backend, has been made. It has been tested
5979 on a big-endian kernel, and works sufficiently well to be able to
5980 rebuild itself; it has not been tested in little-endian mode.
5981 * fixed an inconsistency between gencgc.c and purify.c which made
5982 dumping/loading .core files unreliable
5983 * fixed bug 120a: The compiler now deals correctly with IFs where
5984 the consequent is the same as the alternative, instead of
5985 misderiving the return type. (thanks to Alexey Dejneka)
5986 * fixed bug 113: Logical pathnames are now dumpable (the logical
5987 host is resolved at load-time, throwing an error if it is not
5989 * fixed bug 174: FORMAT's error message is slightly clearer when a
5990 non-printing character is used in a format directive.
5991 * fixed several bugs in compiler checking of type declarations, i.e.
5992 violations of the Python "declarations are assertions" principle
5993 (thanks to Alexey Dejneka)
5994 * fixed several bugs in PCL's error checking (thanks to Gerd
5996 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5998 * fixed bug in compilation of functions as first class values
5999 (thanks to Antonio Martinez-Shotton)
6000 * The compiler's handling TYPE-ERRORs which it can prove will
6001 inevitably happen at runtime has been cleaned up and corrected
6002 in several ways. (thanks to Alexey Dejneka)
6003 * improved argument type checking for various basic arithmetic
6004 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6005 lavished on them in the past that they can be compiled in many
6006 ways in different special cases
6007 * fixed bug 181: compiler checks validity of user supplied type
6009 * cleaned up code flushing in optimization: Function calls which
6010 should signal errors for safety purposes (e.g. which ANSI says
6011 should signal errors when their arguments are of incorrect type)
6012 are no longer optimized away.
6013 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6014 * incremented fasl file version number, because changes in the
6015 implementation of sequence functions like COERCE caused
6016 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6017 in old inline expansions) to become undefined. (Actually these
6018 changes were later undone, so we might very well be binary
6019 compatible with 0.7.7 after all, but leaving the version number
6020 incremented seemed like the simplest and most conservative
6023 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6024 * An alpha-quality port to the parisc architecture running Linux,
6025 based on the old CMUCL backend, has been made. This, even more so
6026 than the other backends, should be considered still a work in
6027 progress; known problems include that the Linux kernel in 64-bit
6028 mode does not propagate the correct sigcontext structure to
6029 userspace, and consequently SBCL on a parisc64 kernel will not
6031 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6032 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6033 suppressed.) Also now that the compiler is looking at declarations
6034 in the environment, it checks optimization declarations as well,
6035 and suppresses inlining when (> DEBUG SPEED).
6036 * More fixes have been made to treatment of floating point exception
6037 treatment and other Unix signals. In particular, floating point
6038 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6039 * The detection and handling of control stack exhaustion (infinite
6040 or very deeply nested recursion) has changed. Stack exhaustion
6041 detection is now done by write-protecting pages at the OS level
6042 and applies at all optimization settings; when found, a
6043 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6044 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6045 be caught using IGNORE-ERRORS.
6046 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6047 correctly when transforming recursive LABELS functions to LETs.
6048 (thanks to Alexey Dejneka)
6049 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6050 that are names of constants or global variables.
6051 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6052 alien routines with docstrings.
6053 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6054 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6056 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6057 (thanks to Eric Marsden)
6058 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6059 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6060 * Bug fix: The SPARC backend can now compile functions involving
6061 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6062 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6063 to a functions expecting a PATHNAME-DESIGNATOR.
6064 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6065 lambda lists. (thanks to Alexey Dejneka)
6066 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6067 functions so that EXPORTing the name of the class doesn't cause
6068 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6069 to Antonio Martinez for reporting this)
6070 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6071 constant-folded without failing an assertion. (thanks to Einar
6072 Floystad Dorum for reporting this)
6073 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6074 types are now dealt with more correctly by the compiler.
6075 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6076 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6077 behaviour analogous to RENAME-FILE. This puts its behaviour more
6078 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6080 * The fasl file version number has changed again. (because of the
6081 bug fix involving the names of PCL MAKE-INSTANCE functions)
6083 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6084 * bug fix: Floating point exceptions are treated much more
6085 consistently on the x86/Linux and PPC/Linux platforms.
6086 * Array initialization with :INITIAL-ELEMENT is now much faster for
6087 cases when the compiler cannot open code the array creation, but
6088 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6089 array accesses have also seen a speed increase.
6090 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6091 specified. (This was at the root of some bad interactions between
6092 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6094 * bug fix: Internal error arguments for undefined functions are now
6095 computed correctly on the PPC/Linux platform.
6096 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6097 Raymond Toy's patch for CMU CL)
6098 * Support for the Solaris 9 operating environment has been included
6099 (thanks to Daniel Merritt)
6100 * A very ugly but hopefully complete draft of the missing FFI chapter
6101 of the manual has been created by reformatting the corresponding
6102 CMU CL manual chapter into (currently very ugly and incoherent)
6103 DocBook and bringing it up to date for SBCL behavior. Thus, the
6104 manual is now essentially complete, at least by my extreme
6105 once-and-only-once standards, whereby it's acceptable to refer to
6106 the doc strings of SB-EXT functions as the primary documentation.
6107 * The fasl file version number has changed again, due to cleanup of
6108 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6109 is no longer a static symbol.)
6111 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6112 * SBCL now builds with OpenMCL (version 0.12) as the
6113 cross-compilation host; also, more progress has been made toward
6114 bootstrapping under CLISP.
6115 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6117 * bug 158 fixed: The compiler can now deal with integer loop
6118 increments different from 1; fixing this turned out also to fix
6120 * bug 169 fixed: no more bogus warnings about using lexical bindings
6121 despite the presence of perfectly good SPECIAL declarations (thanks
6122 to David Lichteblau)
6123 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6124 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6125 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6127 * bug 180 fixed: Method combination specifications no longer ignore
6128 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6129 * bug fix: Structure type predicate functions now check their argument
6130 count as they should.
6131 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6132 correctly. (thanks to Pierre Mai)
6133 * minor incompatible change: The --noprogrammer option is deprecated
6134 in favor of the new --disable-debugger option, which is very similar.
6135 (The major difference is that it takes effect at a slightly different
6136 time at startup, causing handling of errors in --sysinit and
6137 --userinit files will be affected differently.) The
6138 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6139 been added to allow this functionality to be controlled from ordinary
6140 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6141 maintainers, who might want to run non-interactive scripts to
6142 build SBCL cores which will later be used interactively.)
6143 * minor incompatible change: The LOAD function no longer, when given
6144 a wild pathname to load, loads all files matching that pathname.
6145 Instead, an error of type FILE-ERROR is signalled.
6147 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6148 * bug 147 fixed: The compiler preserves its block link/count
6149 invariants more correctly now so that it doesn't crash. (thanks
6151 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6153 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6154 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6155 no-value-for-this-character as NIL (as specified by ANSI).
6156 * HOST-NAMESTRING on physical pathnames now returns a string that is
6157 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6158 (thanks to Christophe Rhodes)
6159 * The Alpha port handles icache flushing more correctly. (thanks to
6161 * More progress has been made toward bootstrapping under CLISP. (thanks
6162 to Christophe Rhodes)
6163 * The fasl file format has changed again, because dynamic loading
6164 on OpenBSD (which has non-ELF object files) motivated some cleanups
6165 in the way that foreign symbols are transformed and passed around.
6166 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6167 is no longer treated as whitespace by the reader, but instead as
6168 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6169 |A
\x7fB|, instead of A as it used to.
6171 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6172 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6173 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6174 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6175 this as of 0.7.1.45, but was left out of the previous news section
6176 (thanks to Dan Barlow)
6177 * SBCL now runs on the Solaris operating system on SPARC architectures
6178 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6179 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6180 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6181 * SPARC backend cleanups, allowing builds of cores optimized for V8
6182 and V9 SPARCS, and also emission of code targeted to a particular
6183 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6185 * SBCL is closer to bootstrapping under CLISP, thanks to various
6186 fixes by Christophe Rhodes.
6187 * The fasl file format has changed again, to allow the compiler's
6188 INFO database to support symbol macros.
6189 * The user manual (in doc/) is formatted into HTML more nicely.
6190 (thanks to coreythomas)
6191 * The system is smarter about SUBTYPEP relationships, especially
6192 those involving NOT types (including types such as ATOM which are
6193 represented internally using NOT types). Thus SUBTYPEP is less
6194 likely to return (VALUES NIL NIL) in general, and in particular
6195 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6197 * The fasl file format has changed again, because the internal
6198 representation of types now includes a new slot to support the new
6199 SUBTYPEP-of-NOT-types logic.
6200 * (not a change in the main branch of SBCL, but a related prototype
6201 which can hopefully be merged into the main branch of SBCL in the
6202 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6203 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6204 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6205 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6206 dispatch macro character combinations. (thanks to Alexey Dejneka)
6207 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6208 that superficially look like logical namestrings correctly.
6209 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6211 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6212 default supplied-p) for &optional and &key arguments. (thanks to
6215 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6216 * incompatible change: The compiler is now less aggressive about
6217 tail call optimization, doing it only when (> SPACE DEBUG) or
6218 (> SPEED DEBUG). (This is an incompatible change because there are
6219 programs which relied on the old CMU-CL-style behavior to optimize
6220 away their unbounded recursion which will now die of stack overflow.)
6221 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6222 for non-GENCGC systems has been increased to 20M (since that
6223 seems much closer to the likely performance optimum for modern
6224 systems than the old 4M value was)
6225 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6226 and *DEBUG-PRINT-LEVEL*
6227 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6228 of CMU CL's support for SPARC, and various endianness and other
6229 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6230 * new syntactic sugar for the Unix command line: --load foo.bar is now
6231 an alternate notation for --eval '(load "foo.bar")'.
6233 ** The system now detects stack overflow and handles it gracefully,
6234 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6235 optimization settings. (This is a good thing in general, and
6236 its introduction in this version should be particularly timely
6237 for anyone whose code fails because of suppression of tail
6239 ** The system now hunts for the C variable "environ" in a more
6240 devious way, to avoid segfaults when the C library version differs
6241 between compile time and run time. (thanks to Christophe Rhodes)
6242 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6243 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6244 ** The compiler no longer issues bogus style warnings for undefined
6245 classes in the same source file as the DEFCLASSes which defined
6246 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6248 ** fixes in CONDITION class precedence list for undefined function
6249 errors (thanks to Alexei Dejneka)
6250 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6251 correctly. (thanks to Dan Barlow)
6252 ** portability fixes aiming at bootstrapping under CLISP (thanks
6253 to Dave McDonald and Christophe Rhodes)
6254 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6255 ** fixes in type translation and and type inference (thanks to
6257 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6258 ** various fixes in the new ports (thanks to Dan Barlow)
6259 * several changes related to debugging:
6260 ** suppression of tail recursion, as noted above
6261 ** stack overflow detection, as noted above
6262 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6263 is now the default. (For some time encapsulation has been more
6264 reliable than the breakpoint-based :ENCAPSULATE NIL
6265 implementation, at least on X86 systems; and I just noticed that
6266 encapsulation also seems closer to the spirit of the ANSI
6269 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6271 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6272 up properly again. (There was a packaging bug in 0.7.0 which
6273 left their definitions in SB-SYS::LOAD-FOREIGN and
6274 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6275 vital for most things which interface to C-level interfaces,
6276 like extensions working with sockets or databases or
6277 Perl-compatible regexes or whatever, and the need to fix
6278 this bug is the main reason that 0.7.1 was released so
6280 ** DEFGENERIC is now choosier about the methods it redefines, so that
6281 reLOADing a previously-LOADed file containing DEFGENERICs does
6282 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6283 cycle now works as it should. (thanks to Alexey Dejneka)
6284 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6285 fixed by Christophe Rhodes. (He actually submitted this patch
6286 months ago, and I delayed until after 0.7.0.)
6287 ** Bug 111 (internal compiler confusion about runtime checks on
6288 FUNCTION types) was fixed by Alexey Dejneka.
6289 * Some internal cleanups (getting rid of variables which aren't
6290 needed now that the byte interpreter is gone) caused the fasl
6291 file format number to change again.
6293 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6294 * major incompatible change: The default fasl file extension, i.e. the
6295 default extension for files produced by COMPILE-FILE, has changed
6296 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6298 ** There are many changes in the implementation of the compiler.
6299 SBCL is now essentially a compiler-only implementation of ANSI
6300 Common Lisp. EVAL still "interprets" a few special cases, but
6301 almost all the interesting cases are handled by creating
6302 a LAMBDA expression, calling COMPILE on it, then calling
6303 FUNCALL on the result.
6304 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6305 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6306 Since the code is newer, there might still be some new bugs
6307 (though not as many as before Martin Atzmueller's fixes:-). But
6308 the new code is substantially simpler and clearer, and hopefully
6309 any remaining bugs will be simpler, less fundamental, and more
6310 fixable then the bugs in the old code.
6311 ** The revised compiler is still a little unsteady on its feet.
6313 *** The debugging information it produces (particularly the names
6314 of FUNCTION objects) is sometimes much less useful than what
6315 the old compiler produced.
6316 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6317 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6318 within a MACROLET) has been temporarily weakened.
6319 ** There are new compiler optimizations for various functions:
6320 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6321 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6322 *** the math functions TRUNCATE, FLOOR, and CEILING
6323 *** the function-of-all-trades COERCE
6324 Mostly these should be transparent, but there's one
6325 potentially-annoying problem (bug 117): when the compiler
6326 inline-expands a function and does type analysis on the result,
6327 it can create control paths which have type mismatches, and
6328 when it can't prove that those control paths aren't taken,
6329 it will issue WARNINGs about the type mismatches. This is
6330 a particular problem in practice for the new sequence functions.
6331 It's not clear how this should be fixed, and for now, a
6332 workaround is given in the entry for 117 in the BUGS file.
6333 ** (Because of the interaction between the two previous items --
6334 occasional inlining problems and new inline expansions -- some
6335 of the new sequence function optimizations won't really kick in
6336 completely until debugging information, and then inlining, are
6337 straightened out in some future version.)
6338 * minor incompatible changes:
6339 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6340 DIRECTORY no longer implicitly promotes NIL slots of its
6341 pathname argument to :WILD. In particular, when you ask for the
6342 contents of a directory (which you used to be able to do without
6343 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6344 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6345 ** changes in behavior that ANSI explicitly defines to be
6346 implementation dependent:
6347 *** The new compiler-only implementation still conforms with ANSI,
6348 but acts a little different than before. Besides the obvious
6349 changes in performance tradeoffs (that the cost per form passed
6350 to EVAL has gone up, and the cost per form executed by EVAL
6351 has gone down), the behavior of the system changes a little
6352 because there are no longer any interpreted function objects.
6353 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6354 e.g. doing COMPILE on the output of interactive DEFUN is
6356 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6358 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6359 has changed from (:CL) to NIL.
6360 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6361 e.g. #\Newline and #\Tab, don't have names specified in the
6362 ANSI Common Lisp standard, is now based on their ASCII symbolic
6363 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6364 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6365 are no longer used for output.
6366 ** changes in internal implementation constants:
6367 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6368 4 million. (If your application spends a lot of time GCing and
6369 you have a lot of RAM, you might want to experiment with
6370 increasing it even more.)
6371 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6372 However, almost all old code should still continue to work without
6373 immediate update, as SB-C-CALL is now a (deprecated) nickname
6375 ** Old operator names in the style DEF-FOO are now deprecated in
6376 favor of new corresponding names DEFINE-FOO, for consistency with
6377 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6378 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6379 internal symbols, but a few supported extensions like
6380 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6381 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6382 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6383 etc. as you get deeper into recursive calls to the debugger
6384 command loop, instead of the old "5]", "5]]", "5]]]"
6385 sequence. (I was motivated to do this when squabbles between
6386 ILISP and SBCL left me very deeply nested in the debugger. In the
6387 short term, this change will probably provoke more ILISP/SBCL
6388 squabbles, but hopefully it will be an improvement in the long run.)
6389 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6390 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6391 function, since declaiming return types involving aliens is
6392 (1) annoyingly messy to do by hand and (2) vital to efficient
6393 compilation of code which calls such functions.
6394 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6395 longer reexported by the SB-EXT package. They're solely useful
6396 for alien code, so it seems more logical that you should get
6397 them from the SB-ALIEN package, not in SB-EXT.
6398 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6399 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6400 features. Instead, the code that they used to control is always
6401 built into the system.
6402 * many other bug fixes
6403 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6404 advantage of the new EVAL-WHEN stuff and to clean them up in
6405 general, and they are now more ANSI-compliant in a number of
6406 ways. Martin Atzmueller is responsible for a lot of this.
6407 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6409 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6410 *** correct ERROR type for various file operations
6411 *** some fixes for Lisp streams
6412 *** DEFMETHOD syntax checking
6413 *** changing old weird representation of debug information as
6414 strings (which, among their other deficiencies, don't transform
6415 correctly when you rename packages, and don't change their
6416 print representation when you change things like *PACKAGE*
6417 and *PRINT-LENGTH*) to symbols and lists of symbols
6418 He also made several improvements and fixed several bugs in DESCRIBE.
6419 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6421 *** misbehavior of WRITE-STRING/WRITE-LINE
6422 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6423 and several other LOOP problems as well
6424 *** DIRECTORY when similar filenames are present
6425 *** DEFGENERIC with :METHOD options
6426 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6427 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6428 *** argument ordering in FIND with :TEST option
6429 *** mishandled package designator argument in APROPOS-LIST
6430 *** various problems in the backquote readmacro
6431 *** a bug in APROPOS
6432 *** probably some others that I'm not describing very well here,
6433 since the CVS log documents them by reference to sbcl-devel
6434 messages, and the SourceForge archives aren't working well.:-(
6435 ** Dan Barlow improved the Alpha port (and is making progress on the
6436 PPC port, for those of you who think different).
6437 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6438 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6439 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6440 continues to work on the SPARC port (for those of you in a position
6441 to look down upon our little PC-compatible boxes from a great height).
6442 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6443 and uses that copy, rather than the current dynamic value, when
6444 it's trying to decide whether to truncate output. Thus e.g.
6445 (let ((*print-lines* 50))
6446 (pprint-logical-block (stream nil)
6448 (let ((*print-lines* 8))
6449 (print (aref possiblybigthings i) stream)))))
6450 should now truncate the logical block only at 50 lines, instead of
6451 often truncating it at 8 lines, as it did before.
6452 * The doc/cmucl/ directory, containing old CMU CL documentation
6453 from the time of the fork, is no longer part of the base system.
6454 SourceForge has shut down its anonymous FTP service, and with it
6455 my original plan for distributing the old CMU CL documentation
6456 there. For now, if you need these files you can download an old
6457 SBCL source release and extract them from it.
6458 * The fasl file version number changed again, for dozens of reasons,
6459 some of which are apparent above.
6461 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6462 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6463 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6464 patch, so that DISASSEMBLE output is much nicer.
6465 * The code in the SB-PROFILE package now seems reasonably stable.
6466 I still haven't decided what the final interface should look like
6467 (I'd like PROFILE to interact cleanly with TRACE, since both
6468 facilities use function encapsulation) but if you have a need
6469 for profiling now, you can probably use it successfully with
6470 the current CMU-CL-style interface.
6471 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6472 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6473 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6474 link now returns the dangling link itself, and for similar
6475 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6476 link itself. (In these cases the old code signalled an error and
6477 looped endlessly, respectively.) Thus, DIRECTORY now works even
6478 in the presence of dangling and cyclic symbolic links.
6479 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6480 is now a supported extension again, since the consensus on
6481 sbcl-devel was that it can be useful for ordinary development
6482 work, not just for debugging SBCL itself.
6483 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6484 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6485 that currently-defined functions might be redefined later with
6486 different return types.
6487 * Hash tables can be printed readably, as inspired by CMU CL code
6488 of Eric Marsden and SBCL code of Martin Atzmueller.
6489 * better error handling in CLOS method combination, thanks to
6490 Martin Atzmueller porting Pierre Mai's CMU CL patches
6491 * more overflow fixes for >16Mbyte I/O buffers
6492 * A bug in READ has been fixed, so that now a single Ctrl-D
6493 character suffices to cause end-of-file on character streams.
6494 In particular, now you only need one Ctrl-D at the command
6495 line (not two) to exit SBCL.
6496 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6498 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6499 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6500 does the right thing.
6501 * The implementation of some type tests, especially for CONDITION
6502 types, is now tidier and maybe faster, due to CMU CL code
6503 originally by Douglas Crosher, ported by Martin Atzmueller.
6504 * Some math functions have been fixed, and there are new
6505 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6506 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6507 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6508 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6509 likely to be built into sbcl-0.7.0.)
6510 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6511 CL, ported to SBCL by Martin Atzmueller)
6512 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6513 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6514 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6515 * There's a new slam.sh hack to shorten the edit/compile/debug
6516 cycle for low-level changes to SBCL itself, and a new
6517 :SB-AFTER-XC-CORE target feature to control the generation of
6518 the after-xc.core file needed by slam.sh.
6519 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6520 COMPILE-FILE is no longer supported, so that now every function
6521 gets an entry point, so that block compilation looks a little
6522 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6523 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6524 returns the number of bytes consed since the system started,
6525 rather than the number consed since the first time the function
6526 was called. (The new definition parallels ANSI functions like
6527 CL:GET-INTERNAL-RUN-TIME.)
6528 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6529 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6530 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6531 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6532 * Fasl file version numbers are now independent of the target CPU,
6533 since historically most system changes which required version
6534 number changes have affected all CPUs equally. Similarly,
6535 the byte fasl file version is now equal to the ordinary
6538 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6539 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6540 is no longer recognized. I apologize for this, because it was
6541 listed in SB-EXT as a supported extension, but I found that
6542 its existing behavior was poorly specified, as well as incorrectly
6543 specified, and it looked like too much of a mess to straighten it
6544 out. I have enough on my hands trying to get ANSI stuff to work..
6545 * many patches ported from CMU CL by Martin Atzmueller, with
6546 half a dozen bug fixes in pretty-printing and the debugger, and
6547 half a dozen others elsewhere
6548 * fixed bug 13: Floating point infinities are now supported again.
6549 They might still be a little bit flaky, but thanks to bug reports
6550 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6551 as flaky as they were.
6552 * The --noprogrammer command line option is now supported. (Its
6553 behavior is slightly different in detail from what the old man
6554 page claimed it would do, but it's still appropriate under the
6555 same circumstances that the man page talks about.)
6556 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6557 are now supported, and enabled by default. Thus, the compiler can
6558 handle many floating point and complex operations much less
6559 inefficiently. (Thus e.g. you can implement a complex FFT
6561 * The compiler now detects type mismatches between DECLAIM FTYPE
6562 and DEFUN better, and implements CHECK-TYPE more correctly, and
6563 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6564 thanks to patches from Martin Atzmueller.
6565 * various fixes to make the cross-compiler more portable to
6566 ANSI-conforming-but-different cross-compilation hosts (notably
6567 Lispworks for Windows, following bug reports from Arthur Lemmens)
6568 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6569 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6570 fixed thanks to Pierre Mai's CMU CL patches.
6571 * fixes to keep the system from overflowing internal counters when
6572 it tries to use i/o buffers larger than 16M bytes
6573 * fixed bug 45a: Various internal functions required to support
6574 complex special functions have been merged from CMU CL sources.
6575 (When I was first setting up SBCL, I misunderstood a compile-time
6576 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6577 * improved support for type intersection and union, fixing bug 12
6578 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6579 more obscure bugs as well
6580 * some steps toward byte-compiling non-performance-critical
6581 parts of the system, courtesy of patches from Martin Atzmueller
6582 * Christophe Rhodes has made some debian packages of sbcl at
6583 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6584 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6585 stable, but are nonetheless usable. When he's ready, I'd be happy
6586 to add them to the SourceForge "File Releases" section. (And if
6587 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6588 * new fasl file format version number (because of changes in
6589 internal representation of (OR ..) types to accommodate the new
6590 support for (AND ..) types, among other things)
6592 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6593 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6595 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6597 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6598 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6599 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6600 * DESCRIBE now works on structure objects again.
6601 * Most function call argument type mismatches are now handled as
6602 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6603 know whether the function will be redefined before the call is
6604 executed. (The compiler could flag local calls with full WARNINGs,
6605 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6606 it doesn't keep track of enough information to know whether calls
6607 are local in this sense.)
6608 * Compiler output is now more verbose, with messages truncated
6609 later than before. (There should be some supported way for users
6610 to override the default verbosity, but I haven't decided how to
6611 provide it yet, so this behavior is still controlled by the internal
6612 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6613 src/compiler/ir1util.lisp.)
6614 * Fasl file format version numbers have increased again, because
6615 support for the Gray streams extension changes the layout of the
6616 system's STREAM objects.
6617 * The Gray subclassable streams extension now works, thanks to a
6618 patch from Martin Atzmueller.
6619 * The full LOAD-FOREIGN extension (not just the primitive
6620 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6621 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6622 but like most other programs, it defaults to copying the Unix
6623 environment from the original process instead of starting the
6624 new process in an empty environment.
6625 * Extensions which manipulate the Unix environment now support
6626 an :ENVIRONMENT keyword option which doesn't smash case or
6627 do other bad things. The CMU-CL-style :ENV option is retained
6628 for porting convenience.
6629 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6630 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6632 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6634 * A patch from Martin Atzmueller seems to have solved the SIGINT
6635 problem, and as far as we know, signal-handling now works cleanly.
6636 (If you find any new bugs, please report them!)
6637 * The system no longer defaults Lisp source file names to types
6638 ".l", ".cl", or ".lsp", but only to ".lisp".
6639 * The compiler no longer uses special default file extensions for
6640 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6641 seems to expect a single default extension for all compiled code,
6642 and there's no compelling reason to try to stretch the standard
6643 to allow two different extensions.) Instead, byte-compiled files
6644 default to the same extension as native-compiled files.
6645 * Fasl file format version numbers have increased again, because
6646 a rearrangement of internal implementation packages made some
6647 dumped symbols in old fasl files unreadable in new cores.
6648 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6649 many fewer weird special cases.
6650 * Bug #17 (differing COMPILE-FILE behavior between logical and
6651 physical pathnames) has been fixed, and some related misbehavior too,
6652 thanks to a patch from Martin Atzmueller.
6653 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6654 by Tim Moore, ported to SBCL by Martin Atzmueller.
6655 * Martin Atzmueller fixed several filesystem-related problems,
6656 including bug #36, in part by porting CMU CL patches, which were
6657 written in part by Paul Werkowski.
6658 * More compiler warnings in src/runtime/ are gone, thanks to
6659 more patches from Martin Atzmueller.
6660 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6663 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6665 * DESCRIBE now works on CONDITION objects.
6666 * The debugger now handles errors which arise when trying to print
6667 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6669 * The build system now uses an additional file, customize-target-features.lisp,
6670 to allow local modifications to the target *FEATURES* list. (The point of
6671 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6672 debugging features enabled, without having to worry about propagating it
6673 into everyone's system when I do a "cvs update".) When no
6674 customize-target-features.lisp file exists, the target *FEATURES* list
6675 should be constructed the same way as before.
6676 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6677 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6678 warn about behavior which is undefined under the ANSI spec. Note: This
6679 is specified by ANSI, but it's not very popular with programmers.
6680 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6681 macro in the SBCL sources for an example of a workaround which you
6682 might use to make portable ANSI-standard code which does what you want.
6683 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6684 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6685 when it's used as a non-toplevel form. (This is required in order
6686 to implement the DEFCONSTANT-EQX macro.)
6687 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6688 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6689 funny things, due to bugs in the implementation of EVAL-WHEN
6690 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6691 non-toplevel DEFCONSTANTs are uncommon.)
6692 * The core file version number and fasl file version number have been
6693 incremented, because the old noncompliant DEFCONSTANT behavior involved
6694 calling functions which no longer exist, and because I also took the
6695 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6696 * fixed bug 1 (error handling before read-eval-print loop starts), and
6697 redid debugger restarts and related debugger commands somewhat while
6699 ** The QUIT debugger command is gone, since it did something
6700 rather different than the SB-EXT:QUIT command, and since it never
6701 worked properly outside the main toplevel read/eval/print loop.
6702 Invoking the new TOPLEVEL restart provides the same functionality.
6703 ** The GO debugger command is also gone, since you can just invoke
6704 the CONTINUE restart directly instead.
6705 ** The TOP debugger command is also gone, since it's redundant with the
6706 FRAME 0 command, and since it interfered with abbreviations for the
6708 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6710 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6711 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6712 some porting work by Martin Atzmueller)
6713 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6714 with a boatload of patches which he ported to SBCL. Now that those
6716 ** The system tries to make sure that its low-priority messages
6717 are prefixed by semicolons, to help people who like to use
6718 syntax highlighting in their ILISP buffer. (This patch
6719 was originally due to Raymond Toy.)
6720 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6721 patches originally written by Raymond Toy.
6722 ** The compiler understands coercion between single-value and
6723 multiple-VALUES type expressions better, getting rid of some very
6724 weird behavior, thanks to patches originally by Robert MacLachlan
6725 and Douglas Crosher.
6726 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6727 lambda lists, thanks to a patch originally by Pierre Mai.
6728 ** The system no longer bogusly warns about "abbreviated type
6730 ** The compiler gets less confused by inlining and RETURN-FROM,
6731 thanks to some patches originally by Tim Moore.
6732 ** The system no longer hangs when dumping circular lists to fasl
6733 files, thanks to a patch originally from Douglas Crosher.
6734 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6735 undefined function error.
6736 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6737 in structure slot initforms) for now, documented workaround instead:-|
6738 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6739 * fixed bug 5: added stubs for various Gray stream functions called
6740 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6741 installed, at least appropriate type errors are generated
6742 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6743 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6744 consistently in DEFMETHOD forms.
6745 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6746 it doesn't seem to affect SBCL after all
6747 * The C runtime system now builds with better optimization and many
6748 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6750 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6752 * The system is now under CVS at SourceForge (instead of the
6753 CVS repository on my home machine).
6754 * The new signal handling code has been tweaked to treat register
6755 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6756 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6757 downstream, e.g. in debug-int.lisp, has implicit dependencies
6758 on the unsignedness of integer representation of machine words,
6759 and that caused the system to bomb out with infinite regress
6760 when trying to recover from type errors involving signed values,
6761 e.g. (BUTLAST '(1 2 3) -1).)
6762 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6763 (This was one of the bugs Peter Van Eynde reported back in July.)
6764 * The system now uses code inspired by Colin Walters' O(N)
6765 implementation of MAP (from the cmucl-imp@cons.org mailing
6766 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6767 inline the MAP operation, and there is more than one
6768 sequence argument to the MAP call (so that it can't just
6769 do ETYPECASE once and for all based on the type of the
6770 single sequence argument). (The old non-inline implementation
6771 of the general M-argument sequence-of-length-N case required
6772 O(M*N*N) time when any of the sequence arguments were LISTs.)
6773 * The QUIT :UNIX-CODE keyword argument has been renamed to
6774 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6775 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6777 * Raymond Wiker's patches to port dynamic loading from Linux to
6778 FreeBSD have been added.
6779 * The BUGS file is now more nearly up to date, thanks in large part
6780 to Martin Atzmueller's review of it.
6781 * The debugger now flushes standard output streams before it begins
6782 its output ("debugger invoked" and so forth).
6783 * The core version number and fasl file version number have both
6784 been incremented, because of incompatible changes in the layout
6786 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6787 used to not be called for a saved Lisp image.)
6788 * Martin Atzmueller's version of a patch to fix a compiler crash,
6789 as posted on sbcl-devel 13 September 2000, has been installed.
6790 * Instead of installing Martin Atzmueller's patch for the
6791 compiler transform for SUBSEQ, I deleted the compiler transform,
6792 and transforms for some similar consing operations.
6793 * A bug in signal handling which kept TRACE from working on OpenBSD
6795 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6796 away by constant folding
6797 * The system now defines its address space constants in one place
6798 (in the Lisp sources), and propagates them automatically elsewhere
6799 (through GENESIS and the sbcl.h file). Therefore, patching the
6800 address map is less unnecessarily tedious and error-prone. The
6801 Lisp names of address space constants have also been systematized.
6802 * CVS tags like dollar-Header-dollar have been removed from
6803 the sources, because they have never saved me trouble and
6804 they've been source of trouble working with patches and other
6805 diff-related operations.
6806 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6807 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6809 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6811 * The system has been ported to OpenBSD.
6812 * The system now compiles with a simple "sh make.sh" on the systems
6813 that it's supported on. I.e., now you no longer need to tweak
6814 text in the target-features.lisp-expr and symlinks in src/runtime/
6815 by hand, the make.sh takes care of it for you.
6816 * The system is no longer so grossly inefficient when compiling code
6817 involving vectors implemented as general (not simple) vectors (VECTOR T),
6818 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6819 which dares to use the various sequence functions on non-simple
6820 vectors, takes less of a performance hit.
6821 * There is now a primitive type predicate VECTOR-T-P
6822 to test for the (VECTOR T) type, so that e.g.
6823 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6824 can now be compiled with some semblance of efficiency. (The old code
6825 turned the type declaration into a full call to %TYPEP at runtime!)
6826 * AREF on (VECTOR T) is still not fast, since it's still compiled
6827 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6828 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6829 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6830 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6831 without making full calls to SUBTYPEP at runtime.
6832 (Some analogous efficiency issues for non-simple vectors specialized to
6833 element types other than T, or for non-simple multidimensional arrays,
6834 have not been addressed. They could almost certainly be handled the
6835 same way if anyone is motivated to do so.)
6836 * The changes in array handling break binary compatibility, so
6837 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6838 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6839 instead of (VALUES T T).
6840 * By following the instructions that Dan Barlow posted to sbcl-devel
6841 on 2 July 2000, I was able to enable primitive dynamic object
6842 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6843 functionality is not implemented (since it calls ld to resolve
6844 library references automatically, requiring RUN-PROGRAM for its
6845 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6846 try to resolve library references) is now supported.
6847 * The system now flushes the standard output streams when it terminates,
6848 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6849 them at several other probably-convenient times, e.g. in each pass of
6850 the toplevel read-eval-print loop, and after evaluating a form given
6851 as an "--eval" command-line option. (These changes were motivated by a
6852 discussion of stream flushing issues on cmucl-imp in August 2000.)
6853 * The source transform for TYPEP of array types no longer assumes
6854 that an array whose element type is a not-yet-defined type
6855 is implemented as an array of T, but instead punts, so that the
6856 type will be interpreted at runtime.
6857 * There is now some support for cross-compiling in make.sh: each of
6858 the phases of make.sh has its own script. (This should be transparent
6859 to people doing ordinary, non-cross-compile builds.)
6860 * Since my laptop doesn't have hundreds of megabytes of memory like
6861 my desktop machine, I became more motivated to do some items on
6862 my to-do list in order to reduce the size of the system a little:
6863 ** Arrange for various needed-only-at-cold-init things to be
6864 uninterned after cold init. To support this, those things have
6865 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6866 symbols with such names are now uninterned after cold init).
6867 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6868 fasl files for cold load.
6869 ** Remove the old compiler structure pooling code (which used to
6870 be conditional on the target feature :SB-ALLOC) completely.
6871 ** Redo the representation of some data in cold init to be more compact.
6872 (I also looked into supporting byte compiled code at bootstrap time,
6873 which would probably reduce the size of the system a lot, but that
6874 looked too complicated, so I punted for now.)
6875 * The maximum signal nesting depth in the src/runtime/ support code has
6876 been reduced from 4096 to 256. (I don't know any reason for the very
6877 large old value. If the new smaller value turns out to break something,
6878 I'll probably just bump it back up.)
6879 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6881 * Many, many bugs reported by Peter Van Eynde have been added to
6882 the BUGS list; some have even been fixed.
6883 * While enabling dynamic object file loading, I tried to make the
6884 code easier to understand, renaming various functions and variables
6885 with less ambiguous names, and changing some function calling
6886 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6887 * While trying to figure out how to do the OpenBSD port, I tried to
6888 clean up some of the code in src/runtime/. In particular, I dropped
6889 support for non-POSIX signal handling, added various comments,
6890 tweaked the code to reduce the number of compilation warnings, and
6891 renamed some files to increase consistency.
6892 * To support the new automatic configuration functionality in make.sh,
6893 the source file target-features.lisp-expr has been replaced with the
6894 source file base-target-features.lisp-expr and the machine-generated
6895 file local-target-features.lisp-expr.
6896 * fixed a stupid quoting error in make.sh so that using CMU CL
6897 "lisp -batch" as cross-compilation host works again
6899 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6901 * DESCRIBE no longer tries to call itself recursively to describe
6902 bound/fbound values, so that it no longer fails on symbols which are
6903 bound to themselves (like keywords, T, and NIL).
6904 * DESCRIBE now works on generic functions.
6905 * The printer now prints less-screwed-up representations of closures
6906 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6907 * A private symbol is used instead of the :EMPTY keyword previously
6908 used to mark empty slots in hash tables. Thus
6909 (DEFVAR *HT* (MAKE-HASH-TABLE))
6910 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6911 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6912 now does what ANSI says that it should. (You can still get
6913 similar noncompliant behavior if bang on the hash table
6914 implementation with all the symbols you get back from
6915 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6916 This breaks binary compatibility, since tests for equality to
6917 :EMPTY are wired into things like the macroexpansion of
6918 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6920 * There's now a minimal placeholder implementation for CL:STEP,
6921 as required by ANSI.
6922 * An obscure bug in the interaction of the normal compiler, the byte
6923 compiler, inlining, and structure predicates has been patched
6924 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6925 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6927 * Missing ordinary arguments in a macro call are now detected even
6928 when the macro lambda list contains &KEY or &REST.
6929 * The debugger no longer complains about encountering the top of the
6930 stack when you type "FRAME 0" to explicitly instruct it to go to
6931 the top of the stack. And it now prints the frame you request even
6932 if it's the current frame (instead of saying "You are here.").
6933 * As specified by ANSI, the system now always prints keywords
6934 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6936 * The default initial SIZE of HASH-TABLEs is now smaller.
6937 * Type information from CLOS class dispatch is now propagated
6938 into DEFMETHOD bodies, so that e.g.
6939 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6941 is now basically equivalent to
6942 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6943 (DECLARE (TYPE SINGLE-FLOAT X))
6945 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6946 operation, without having to do run-time type dispatch.
6947 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6948 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6949 * Since I don't seem to be making big file reorganizations very often
6950 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6951 is overflowing my ability to conveniently back them up), I've finally
6952 checked the system into CVS. (The CVS repository is on my home system,
6953 not at SourceForge -- putting it on SourceForge might come later.)
6954 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6955 high-level GC-NOTIFY-FOO functions send their output. (There's
6956 still very little control of where low-level verbose GC functions
6957 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6958 less than it used to -- the GC-NOTIFY-FOO functions are now under
6959 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6960 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6961 in only one place in the source code, and propagates it automatically
6962 everywhere that it's needed. Thus e.g. when I bump the version from
6963 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6964 * The C source files now include boilerplate legalese and documentation
6965 at the head of each file (just as the Lisp source files already did).
6966 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6967 to his page will be replaced with a link to his new CLiki service.
6969 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6971 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6972 * The build process now looks for GNU make under the default name "gmake",
6973 instead of "make" as it used to. If GNU make is not available as "gmake"
6974 on your system, you can change this default behavior by setting the
6975 GNUMAKE environment variable.
6976 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6977 can build without error under CMU CL.
6979 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6981 * There is now a partial SBCL user manual (with some new text and some
6982 text cribbed from the CMU CL manual).
6983 * The beginnings of a profiler have been added (starting with the
6984 CMU CL profiler and simplifying and cleaning up). Eventually the
6985 main interface should be through the TRACE macro, but for now,
6986 it's still accessed through vaguely CMU-CL-style functions and macros
6987 exported from the package SB-PROFILE.
6988 * Some problems left over from porting CMU CL to the new
6989 cross-compilation bootstrap process have been cleaned up:
6990 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6991 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6992 part when getting rid of the compiler *BACKEND* stuff.)
6993 ** The value of *NULL-TYPE* was screwed up, because it was
6994 being initialized before the type system knew the final
6995 definition of the 'NULL type. This screwed up several key
6996 optimizations in the compiler, causing inefficiency in all sorts
6997 of places. (I found it because I wanted to understand why
6998 GET-INTERNAL-RUN-TIME was consing.)
6999 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7000 PROCLAIM FTYPE information. Unfortunately this broke binary
7001 compatibility again, since now the forms output by DEFGENERIC
7002 to refer to functions which didn't exist in 0.6.3.
7003 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7004 can use the new (as of 0.6.3) transform for SOME into MAP into
7006 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7007 values to (INTEGER 0 1000000), so that the time code will no longer
7008 occasionally get blown up by Linux returning 1000000 microseconds
7009 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7010 its output conform to the ANSI spec. (Alas, this makes its output
7011 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7012 * A full call to MAP NIL with a single sequence argument no longer conses.
7013 * fixes to problems pointed out by Martin Atzmueller:
7014 * The manual page no longer talks about multiprocessing as though
7015 it were currently supported.
7016 * The ILISP support patches have been removed from the distribution,
7017 because as of version 5.10.1, ILISP now supports SBCL without us
7018 having to maintain patches.
7019 * added a modified version of Raymond Toy's recent CMU CL patch for
7020 EQUALP comparison of HASH-TABLE
7022 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7024 * The system still can't cross-compile itself with
7025 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7026 entails), but at least it can compile more of itself that way
7027 than it used to be able to, and various buglets which were uncovered
7028 by trying to cross-compile itself that way have now been fixed.
7029 * This release breaks binary compatibility again. This time
7030 at least I've incremented the FASL file format version to 2, so that the
7031 problem can be detected reliably instead of just causing weird errors.
7032 * various new style warnings:
7033 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7034 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7035 ** using the lexical binding of a variable named in the *FOO* style
7036 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7037 as specified by ANSI.
7038 * *RANDOM-STATE* is no longer automatically initialized from
7039 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7040 default behavior of the system is to repeat its behavior every time
7041 it's run. If you'd like to change this behavior, you can always
7042 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7043 old convention there was no comparably easy way to get the system to
7044 repeat its behavior every time it was run.
7045 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7046 FTYPE declarations has been removed, in favor of their ANSI
7047 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7048 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7049 the types of their sequence arguments can be determined at compile time.
7050 This is done through a new open code expansion for MAP which eliminates
7051 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7052 argument types can be determined at compile time.
7053 * The optimizer now transforms COERCE into an identity operation when it
7054 can prove that the coerced object is already of the correct type. (This
7055 can be a win for machine generated code, including the output of other
7056 optimization transforms, such as the MAP transform above.)
7057 * Credit information has been moved from source file headers into CREDITS.
7058 * Source file headers have been made more standard.
7059 * The CASE macro now compiles without complaining even when it has
7062 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7064 * (Note that the way that the PCL macroexpansions were rewritten
7065 to accommodate the change in DEFGENERIC below breaks binary
7066 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7067 not run under sbcl-0.6.2. Once we get out of alpha releases,
7068 i.e. hit release 1.0.0, we'll probably try to maintain binary
7069 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7070 and sbcl-1.4.4. Until then, however, it might be fairly common
7071 for maintenance releases to break binary compatibility.)
7072 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7074 * The reporting of unhandled signals has been changed to print some
7075 explanatory text as well as the report form. (Previously only
7076 the report form was printed.)
7077 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7078 it defines, so that the compiler no longer issues undefined function
7079 warnings for compiled-but-not-yet-loaded generic functions.
7080 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7081 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7082 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7083 section of the ANSI spec are supported.
7084 * The "" nickname for the "KEYWORD" package has been removed.
7085 The reader still handles symbol tokens which begin with a package marker
7086 as keywords, but it doesn't expose its mechanism for doing so in the
7087 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7088 * The system now issues STYLE-WARNINGs for contradictory TYPE
7089 proclamations. (Warnings for contradictory FTYPE proclamations would
7090 be nice too, but those can't be done usefully unless the type system
7091 is made smarter about FUNCTION types.)
7092 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7093 systematized, so that "*target-*.lisp is supposed to exist only on the
7094 target and imply that there's a related file which exists on the
7095 host, and *host-*.lisp is supposed to exist only on the host and imply
7096 that there's a related file which exists on the target. This involves a
7097 lot of renaming. Hopefully the acute confusion caused by the renaming
7098 will be justified by the reduction in chronic confusion..
7099 ** runtime-type.lisp -> early-target-type.lisp
7100 ** target-type.lisp -> late-target-type.lisp
7101 ** early-host-format.lisp -> early-format.lisp
7102 ** late-host-format.lisp -> late-format.lisp
7103 ** host-error.lisp -> misc-error.lisp
7104 ** early-error.lisp -> early-target-error.lisp
7105 ** late-error.lisp -> late-target-error.lisp
7106 ** host-defboot.lisp -> early-defboot.lisp
7107 ** code/misc.lisp -> code/target-misc.lisp
7108 ** code/host-misc.lisp -> code/misc.lisp
7109 ** code/numbers.lisp -> code/target-numbers.lisp
7110 ** code/early-numbers.lisp -> numbers.lisp
7111 ** early-host-type.lisp -> early-type.lisp
7112 ** late-host-type.lisp -> late-type.lisp
7113 ** host-typep.lisp -> typep.lisp
7114 ** load.lisp -> target-load.lisp
7115 ** host-load.lisp -> load.lisp
7116 ** host-disassem.lisp -> disassem.lisp
7117 ** host-insts.lisp -> insts.lisp
7118 ** byte-comp.lisp -> target-byte-comp.lisp
7119 ** host-byte-comp.lisp -> byte-comp.lisp
7120 ** host-signal.lisp -> signal.lisp
7121 ** host-defstruct.lisp -> defstruct.lisp
7122 ** late-target-type.lisp -> deftypes-for-target.lisp
7123 Furthermore, several other previously target-only files foo.lisp (e.g.
7124 hash-table.lisp and random.lisp) have been split into a target-and-host
7125 foo.lisp file and a target-only target-foo.lisp file, with their key type
7126 definitions in the target-and-host part, so that the cross-compiler will
7127 know more about target types.
7128 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7129 gone away. In their place are various *BACKEND-FOO* variables
7130 corresponding to the slots of the old structure.
7131 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7132 into the target SBCL has been fixed.
7133 * The chill.lisp system for loading cold code into a running SBCL
7135 * Support for the CMU CL "scavenger hook" extension has been removed.
7136 (It was undocumented and unused in the CMU CL sources that SBCL was
7137 derived from, and stale in sbcl-0.6.1.)
7138 * Various errors in the cross-compiler type system were detected
7139 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7140 (enabling various consistency checks). Many of them were fixed,
7141 but some hard problems remain, so the compiler is back to
7142 running without *TYPE-SYSTEM-INITIALIZED* for now.
7143 * As part of the cross-compiler type system cleanup, I implemented
7144 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7145 * I have started adding UNCROSS calls throughout the type system
7146 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7147 on cross-compiler input files will be able to go away, and various
7149 * CONSTANTP now returns true for quoted forms (as explicitly required
7152 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7154 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7155 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7156 (MAKE-LIST -1). In the longer term, it ought to become true
7157 that declarations are assertions even at SAFETY 1. For now, it's not
7158 quite true even at SAFETY 3, but it's at least more nearly true..
7159 (Note that this change seems to increases the size of the system by
7160 O(5%) and to decrease the speed of the compiler by 20% or more.)
7161 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7162 for the problem of printing dozens of lines of distracting information
7163 about low-level system machinery as part of the top stack frame
7164 on entry to the debugger when an undefined function was called.
7165 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7166 is not reset to COMMON-LISP-USER.
7167 * Compilation of stuff related to dyncount.lisp has been made conditional
7168 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7169 smaller. The various dyncount-related symbols have been moved into
7170 a new "SB-DYNCOUNT" package.
7171 * tty-inspect.lisp has been renamed to inspect.lisp.
7172 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7173 feature has gone away. (When we eventually port to other flavors of
7174 libc and/or Unix, we'll try to make the differences between flavors
7175 invisible at the user level.)
7176 * Various other *FEATURES* tags, and/or their associated conditionals,
7177 have been removed if obsolescent, or given better documentation, or
7178 sometimes given more-mnemonic names.
7180 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7182 * tidied up "make.sh" script
7183 * tidied up system directory structure
7184 * better "clean.sh" behavior
7185 * added doc/FOR-CMUCL-DEVELOPERS
7186 * many many small tweaks to output format, e.g. removing possibly-confusing
7187 trailing #\. character in DESCRIBE-INSTANCE
7188 * (EQUALP #\A 'A) no longer signals an error.
7189 * new hashing code, including EQUALP hashing
7190 * tidied up Lisp initialization and toplevel
7191 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7192 * command line argument processing
7193 * added POSIX-GETENV function to deal with Unix-ish environment variables
7194 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7195 terminating SBCL on EOF
7196 * non-verbose GC by default
7197 * There is no more "sbcl" shell script; the sbcl file is now the C
7198 runtime executable (just like CMU CL).
7199 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7201 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7202 symbol and package information as Lisp native symbol and package objects
7203 instead of strings naming symbols and strings naming packages. This way,
7204 whenever packages are renamed (as in warm init), debug information is
7205 transformed along with everything else.
7206 * tweaked the optimization policy declarations which control the building
7207 of SBCL itself. Now, among other things, the system no longer saves
7208 source location debugging information. (This helps two problems at once
7209 by reducing SBCL size and by keeping SBCL from trying to look for its
7210 sources -- which may not exist -- when reporting errors.)
7211 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7212 debugging and testing purposes
7213 * cleaned up printing, making the printer call PRINT-OBJECT for
7214 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7215 methods, giving nearly-ANSI behavior
7216 * converted almost all special variables to use *FOO* naming convention
7217 * deleted PARSE-TIME functionality, since it can be done portably
7218 * moved some files out of cold init into warm init
7219 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7221 * regularized formatting of source files
7222 * added an install.sh script
7223 * fixed ridiculous memory usage of cross-compiler by making
7224 compiler/alloc.lisp not try to do pooling unless it can hook
7225 itself into the GC of the cross-compilation host. Now the system
7226 builds nicely on my old laptop.
7227 * added :SB-ALLOC in target-features.lisp-expr
7228 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7229 was not implemented)
7230 * re-did condition handling and note reporting in the compiler. Notes
7231 are no longer handled by signalling conditions. Style warnings
7232 and warnings are handled more correctly and reported in such a way
7233 that it's easy to find one or the other in your output (so that you
7234 can e.g. figure out which of many problems caused COMPILE-FILE to
7236 * changed the severity of several compiler warnings from full WARNING
7237 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7238 compiler note reporting so that it doesn't use the condition system
7239 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7240 COMPILE-FILE command)
7241 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7242 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7243 no longer supported, since their implementation was deeply intertwingled
7244 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7245 * removed bogus "support" for compiler macros named (SETF FOO), and
7246 removed the compiler macro for SETF INFO (but only after making a fool
7247 of myself on the cmucl-imp mailing list by posting a bogus patch for
7248 DEFINE-COMPILER-MACRO..)
7249 * Compiled files containing forms which have side effects on the Lisp
7250 reader (such as DEFPACKAGE forms) are now handled more correctly.
7251 (Compiler queuing of top level lambdas has been suppressed by setting
7252 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7253 * deleted various currently-unused source files, e.g. gengc.lisp. They
7254 may be added back at some point e.g. when porting to other architectures,
7255 but until they are it's distracting to distribute them and to try to
7257 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7258 there were so many of them they're just distractions, and UNCROSS is
7259 known to be able to handle the current sources
7260 * moved PROFILE functionality into TRACE, so that it will be clear
7261 how the wrapping and unwrapping of functions when you profile them
7262 interacts with the wrapping and unwrapping of functions when you
7263 trace them. (Actually, the functionality isn't there yet, but at least
7264 the interface specification is there. Hopefully, the functionality will
7265 arrive with some future maintenance release.)
7266 * removed host-oops.lisp
7267 * changed signature of QUIT function to allow UNIX-CODE argument
7268 * fixed READ-SEQUENCE bug
7269 * tweaked verbose GC output so that it looks more like the progress
7270 output that ANSI specifies for functions like LOAD
7271 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7272 * added <http://sbcl.sourceforge.com> to the banner information printed by