1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
4 * enhancement: ASSERT reports arguments of calls to lexical functions in
5 additional to global functions.
6 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
7 before accessing its class-precedence list.
9 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
10 * incompatible change: the #\` ("backquote") reader macro was reimplemented
11 to support robust pretty-printing. Reading a form involving #\` produces
12 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
13 that are not lists. Code that unportably attempts operations on
14 un-evaluated forms resulting therefrom, e.g.
15 (SUBST a b (read-from-string "`(x (,y))"))
16 might generate incorrect results and/or errors.
17 * enhancement: support for GNU/kFreeBSD x86.
18 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
19 and DEFGLOBAL variables of type fixnum.
20 * enhancement: arithmetic constant reduction is now performed on defconstant
21 constants too. (lp#1337069).
22 * bug fix: certain ftype proclamations containing &optional t &rest t no
23 longer cause subsequent definitions to signal bogus style-warnings.
24 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
25 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
28 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
29 * enhancement: GENCGC is enabled on ARM.
30 * enhancement: better error reporting for invalid calls to local functions.
31 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
33 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
35 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
37 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
39 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
40 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
41 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
43 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
44 lp#700538, lp#613876, lp#695286, lp#798388)
45 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
46 * bug fix: array type intersection handles T and unknown element types
47 correctly. (lp#1258716)
48 * bug fix: fix a corner case in array type unparsing that would result in
49 misleading translations from our internal type representation.
50 * bug fix: array-rank now sees through union and intersection types.
52 * bug fix: when DECLARE expressions are in the wrong place, be careful not
53 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
55 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
56 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
57 instead of signaling an error. (lp#1095483)
58 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
59 used to (rarely) introduce duplicate conflict markers in a single
60 TN/block pair. (lp#1327008)
62 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
63 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
64 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
65 report of the signaled conditions lists currently running threads.
66 * enhancement: ported to ARM linux.
67 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
68 * enhancement: new contrib sb-mpfr by Stephan Frank.
69 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
70 (lp#1315846, thanks to Mark Cox)
71 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
72 function-designator to a function only as needed. (lp#1012335)
73 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
74 thanks to Thomas Hlavaty)
75 * bug fix: handle --without-xxx options to make.sh more carefully.
76 (lp#1246665, thanks to Richard M Kreuter)
77 * bug fix: prevent maybe-delete-exit from doing semantically broken things
78 with local exits. (lp#309099, lp#518099, lp#533930)
79 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
82 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
83 * optimization: COERCE is now more effecient for more cases when the type is
84 known at compile-time.
86 * bug fix: correctly inherit condition initforms. (lp#1300904)
87 * bug fix: properly pprint literal functions inside nested lists.
89 * bug fix: more-correctly handle array-type unity (broken for ages, causing
90 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
91 reported by jasom in #lisp).
93 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
94 * enhancement: printing backtraces respects
95 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
97 * optimization: defstruct out-of-line accessor are now as fast as inlined.
99 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
100 instances with a test-function (reported by Vivitron in #sbcl)
101 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
102 * bug fix: Change COND error message (lp#1254511)
103 * bug fix: LOAD is no longer confused when called on a directory.
105 * bug fix: MAKE-CONDITION reports names of missing condition classes
106 properly (lp#1199223)
107 * bug fix: restore building with clang. (lp#1293643)
108 * bug fix: restore building on SPARC (broken since 1.1.15).
109 * bug fix: improved FreeBSD support.
110 * bug fix: PPC floating point conversion corrupted stack.
112 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
113 * minor incompatible change: improve read/print consistency for pathnames on
114 Win32, by using the circumflex character #\^ as the escape character.
116 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
117 * enhancement: Loading fasls with symbols from an undefined package includes
118 the name of the symbol in the error message.
119 * bug fix: problems when redefining classes and doing TYPEP on classes
120 concurrently. (lp#1272742)
121 * bug fixes to the x86-64 XCHG instruction:
122 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
124 ** it was misencoded when used to exchange EAX with itself.
125 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
126 32- and 16-bit variations as NOP.
127 * bug fix: the disassembler outputs source annotations in the right place
128 and no longer randomly drops some of them. (lp#1249205)
129 * bug fix: fix commutative-arg-swap from introducing undumpable structures
130 into code, prevent code with errors from being compiled. (lp#1276282)
131 * bug fix: pathnames with :back in their directory component are succeffully
133 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
134 wrap functions around. (lp#309086)
136 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
137 * new feature: the iterative spilling/coloring register allocator developed
138 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
139 in. By default, it only activates for functions that optimize with
140 (speed 3) and (> speed compilation-speed), but setting
141 sb-regalloc:*register-allocation-method* to :iterative forces its
142 execution. The previous behaviour can be obtained by instead setting that
143 variable to :greedy. Thanks again to Google for their support, and, more
144 crucially, to Alexandra Barchunova for her hard work.
145 * optimization: make-array with known element-type and unknown dimensions is
147 * optimization: make-array with unknown element-type is faster as well.
149 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
150 :application-type argument, which can be :console or :gui. :gui allows
151 having GUI applications without an automatically appearing console window.
152 * enhancement: reduced conservativism on GENCGC platforms:
153 conservative roots must be valid-looking tagged pointers or point
154 within a code object, not merely point to within the allocated part
155 of a page, in order to pin a page.
156 * enhancement: support for "Mac Roman" external format.
157 * enhancement: encapsulation of named generic functions now happens without
158 altering the identity of the function bound to the name.
159 * bug fix: Windows applications without the console window no longer misbehave.
160 (patch by Wilfredo Velazquez, lp#1256034).
161 * bug fix: modular arithmetic optimizations do not stumble on dead branches
162 with bad constants. (reported by Douglas Katzman)
163 * bug fix: CLISP can be used again as a cross-compilation host.
164 (Thanks to Vasily Postnicov, lp#1261451)
165 * bug fix: run-program crashed with :directory nil. (lp#1265077)
167 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
168 * optimization: complicated TYPEP tests are less opaque to the type
169 propagation pass. (lp#1229340)
170 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
171 * optimization: EQUALP on structures with raw slots (double-float/complex)
172 no longer conses and is faster.
173 * optimization: RESTART-CASE expands to more compact code.
174 Thanks to Jan Moringen. (lp#1249055)
175 * enhancement: Top-level defmethod without defgeneric no longer causes
176 undefined-function warnings in subsequent forms. (lp#503095)
177 * enhancement: Better error messages for system errors on Windows.
178 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
179 Cushing. (lp#1249183)
180 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
181 specification (multiple integer arguments) and signals a continuable error
182 if the current SBCL version is lower (older) than the specification.
184 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
185 * bug fix: EQUALP now compares correctly structures with raw slots larger
187 * bug fix: contribs couldn't be built on Windows with MinGW.
188 * bug fix: Better pathname handling on Windows. (lp#922117)
189 * bug fix: OPEN reports a more meaningful error when an existing file is
190 opened for output with :if-exists :new-version. Thanks to Philip
191 Munksgaard. (lp#455381)
192 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
193 CLOS-related errors. (lp#633911)
194 * bug fix: GC deadlocks caused by concurrent consing on Windows.
196 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
197 * optimization: better distribution of SXHASH over small conses of related
199 * other improvements to SXHASH:
200 ** use the whole of the positive-fixnum range for SXHASH of fixnums
201 * enhancement: The error message when calling an undefined alien function
202 includes the name of the function on x86-64.
203 * enhancement: sb-ext:run-program now supports :environment on Windows.
204 * enhancement: ASDF is no longer required to load contribs at runtime.
206 * enhancement: when called with a symbol, FIND-RESTART no longer calls
207 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
208 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
209 clusters better in some cases
210 * enhancement: SOME/ANY/other quantification higher-order functions no
211 longer cons. (lp#1070635)
212 * bug fix: forward references to classes in fasls can now be loaded.
214 * bug fix: don't warn on a interpreted->compiled function redefinition
215 from the same location. (patch by Douglas Katzman, lp#1042405)
216 * bug fix: Create vectors of proper internal length when reading literal
217 vectors from FASLs. (Reported by Jan Moringen)
218 * bug fix: COMPILE can now successfully compile setf functions.
219 (Reported by Douglas Katzman)
220 * bug fix: run-program performs more correct escaping of arguments on
221 Windows. (lp#1239242)
222 * bug fix: function-lambda-expression on generic functions returns the
224 * bug fix: (the [type] [constant]) now warns when [constant] matches
225 [type] except for the number of values. (Reported by Nathan Trapuzzano
227 * bug fix: signal errors in required cases of slot-definition initialization
228 protocol. (lp#309072)
229 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
230 (thanks to Stelian Ionescu, lp#1242643)
231 * bug fix: when given a restart object, FIND-RESTART checks whether the
232 restart is active and, when a condition is supplied, whether the restart
233 is associated to a different condition (lp#774410)
235 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
236 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
237 shutdown(3). (thanks to Jan Moringen, lp#1207483)
238 * enhancement: document extensible sequences. (thanks to Jan Moringen,
240 * optimization: EQUAL and EQUALP transforms are smarter.
241 (thanks to Elias Martenson, lp#1220084)
242 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
243 * bug fix: probe-file now can access symlinks to pipes and sockets in
244 /proc/pid/fd on Linux. (reported by Eric Schulte)
245 * bug fix: SBCL can now be built on Solaris x86-64.
246 * bug fix: Floating point exceptions do not persist on Solaris anymore.
247 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
248 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
250 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
251 (thanks to Stephan Frank)
252 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
253 (thanks to Stephan Frank, lp#1206191)
254 * bug fix: sb-safepoint can now reliably handle signal interruptions of
255 foreign code. (lp#1133018)
256 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
257 constructors no longer fails to merge actual and default initargs
258 (thanks to Jan Moringen, lp#1179858)
259 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
260 constructors handles non-KEYWORD initialization arguments more correctly.
261 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
262 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
263 * bug fix: class definitions with CPLs inconsistent with their metaclasses
264 are less likely to destroy the object system's integrity. (lp#309076)
265 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
266 standard. (lp#1203585, thanks to Jan Moringen)
267 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
268 settings. (lp#1023721)
269 * bug fix: getting the order of arguments to
270 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
271 rather than a failed AVER. (reported by Paul Nathan)
272 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
273 arguments during copying on x86 and x86-64; it may still happen on other
274 platforms when there are more fixed arguments than stack slots.
275 (reported by Jan Moringen)
277 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
278 * enhancement: support building the manual under texinfo version 5.
280 * enhancement: Windows builds no longer display the "Kitten of Death" message.
281 A warning is instead appended to the regular banner, and may be muted with
282 --noinform. (lp#728247)
283 * enhancement: support building under new linker handling of syscalls under
284 NetBSD. (thanks to Robert Swindells)
285 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
286 (regression since 1.1.9)
287 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
288 compiler macro. (thanks to Douglas Katzman).
289 * bug fix: signal a warning when defining a setf-function when a
290 setf-expander is already present. (thanks to Douglas Katzman).
291 * bug fix: improved threading on PPC.
292 * bug fix: ROOM works again on Windows. (lp#1206456)
293 * bug fix: Streams were flushed even when there was one byte still left in
294 the buffer. (lp#910213)
295 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
296 either NIL or :ERROR. (reported by Jan Moringen)
298 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
299 * enhancement: ASDF has been updated to 3.0.2.
300 * optimization: stack frames are packed more efficiently on x86oids, which
301 ought to reduce the frequency of Methuselahn conservative references (it
302 certainly helps with gc.impure.lisp / BUG-936304 on x86).
303 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
304 recognized in modular arithmetic contexts, and compile to native negate,
305 rather than going through bignums only to keep the low bits.
306 * bug fix: Compiling potential modularic arithmetic forms does not cause type
307 errors when some integer types lack lower or upper bounds. (lp#1199127)
308 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
309 bitwidth before being used in a non-modular context. (lp#1199428)
310 * bug fix: Multiple catch/unwind blocks in a single function are now
311 allocated in the right stack order on win32. (lp#1072739)
313 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
314 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
315 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
316 * enhancement: disassemble now annotates some previously missing static
317 functions, like LENGTH.
318 * enhancement: clean.sh now also cleans doc/internals.
319 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
320 print a symbol with a package prefix.
321 * enhancement: The debugger and backtracing are more robust against buggy
322 PRINT-OBJECT methods.
323 * optimization: calls to static functions on x86-64 use less instructions.
324 * optimization: compute encode-universal-time at compile time when possible.
325 * optimization: when referencing internal functions as #'x, don't go through
326 an indirect fdefn structure.
327 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
328 * optimization: (mod fixnum) type-checks are performed using one unsigned
329 comparison, instead of two.
330 * optimization: enable more modular arithmetic transforms in the presence of
332 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
333 when the result is known to be negative.
334 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
335 * optimization: comparisons between rationals and constant floats or between
336 integers and constant ratios are now converted to rationals/integers at
338 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
339 * bug fix: problems with NCONC type derivation (reported by Jerry James).
340 * bug fix: EXPT type derivation no longer constructs bogus floating-point
341 types. (reported by Vsevolod Dyomkin)
342 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
343 addrinfo. (lp#1187041, patch by Jerry James)
344 * bug fix: uninitialized type-error conditions can now be printed.
346 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
347 listening, allowing several tests to run in parallel.
348 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
349 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
351 * bug fix: Specialised SIMD-PACK types can be negated.
352 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
353 reported by Eric Marsden)
354 * bug fix: FP return values from foreign calls are always rounded to single
355 or double float precision on x87.
356 * bug fix: Known-safe vector access on x86oids should not fail spuriously
357 when the index is of the form (+ x constant-positive-integer).
358 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
359 * bug fix: backtrace printer no longer tries to create very large lists when
360 the arg-count register is clobberred by other code. (lp#1192929)
361 * bug fix: x86 should never signal an FP exception while boxing an FP value,
362 a situation that lands us into ldb.
364 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
365 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
366 ROOM, plus a few SB-INTROSPECT functions) has been completely
367 rewritten; it may now exhibit different bugs than before.
368 * new feature: minimal runtime/compiler intrastructure support for SSE
369 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
370 feature :sb-simd-pack. This should enable intrinsics extensions as
371 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
372 for maintaining a branch for so long.
373 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
374 the working directory of the spawned process.
375 (lp#791800) (patch by Matthias Benkard)
376 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
377 stack-allocated on PPC.
378 * enhancement: "fixed objects" can now be stack-allocated on PPC.
379 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
380 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
381 also returns VOPs which do not translate any functions, and finds
382 defoptimizer types ir2convert and stack-allocate-result.
383 * enhancement: better type derivation for APPEND, NCONC, LIST.
385 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
386 heap in a manner similar to the GC rather than its previous ad-hoc
387 scheme, and is therefore no less and possibly more accurate.
388 * fixes and enhancements related to Unicode:
389 ** the character database information has been updated to Unicode 6.2;
390 ** support for canonical and compatibility decomposition of characters has
391 been added, along with support for primary composition;
392 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
393 NFKD) has been included;
394 ** querying the character database for code points not defined by Unicode
395 gives less wrong answers (lp#1178038, reported by Ken Harris)
396 * enhancement: print intermediate evaluation results for some ASSERTed
397 expressions. (lp#789497) (patch by Alexandra Barchunova)
398 * enhancement: x86-64 disassemblies are annotated with unboxed constant
399 values when there are references to (RIP-relative) unboxed constants.
400 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
401 of quadratically with the size of the input in the worst case.
403 * bug fix: handle errors when initializing *default-pathname-defaults*,
404 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
405 decoding errors, or directories being deleted.
406 * bug fix: Loading a core with a discontiguous dynamic space now correctly
407 computes the amount of dynamic space used.
408 * bug fix: disassembler missing ",8" on SHLD
409 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
410 that provide an "invalid" stack frame link for the signal handler
411 itself now use the saved-fp-and-pc mechanism to pick up from the stack
412 frame in the interrupt (signal) context. This is known to affect
413 threaded FreeBSD/x86-64.
414 * bug fix: some LOOP statements couldn't be compiled.
416 * bug fix: sb-sequence:dosequence works on literal vectors.
417 * bug fix: errors in generic arithmetic show the assembly routine's
418 caller on x86 and x86-64. (lp#800343)
419 * bug fix: Compile-time type errors should never result in COMPILE-FILE
421 * bug fix: Known bad local calls do not cause strange failures when
422 emitting or dumping code. (lp#504121)
423 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
424 codegen errors: type checks are inserted as necessary. (lp#1177703)
425 * bug fix: Unsigned modular arithmetic is correctly converted into signed
426 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
427 * bug fix: a combination of inlined local function with &optional and
428 recursion no longer causes undescriptive compiler errors. (lp#1180992)
429 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
430 when testing for non-zero-ness.
431 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
433 * bug fix: Type mismatch for the value of conditional expressions are
434 correctly reported when detected at compile-time, instead of complaining
435 about a constant NIL (similar for non-EQ-comparable catch tags).
436 * bug fix: Referring to INLINE global functions as values should not result
437 in a compilation failure. (lp#1035721)
438 * optimization: faster ISQRT on fixnums and small bignums
439 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
440 * optimization: On x86-64, the number of multi-byte NOP instructions used
441 for code alignment is now always minimal.
442 * optimization: On 64-bit targets, the compiler generates much faster
443 code for type checks for types known at compile time that are smaller
444 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
445 their COMPLEX variants.
446 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
447 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
448 * optimization: ROOM no longer conses so egregiously on non-x86oid
450 * optimization: associative bitwise operations reassociate patterns like
451 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
453 * optimization: quasiquote expressions now perform more constant folding,
454 instead of consing equal lists at runtime. (lp#1026439)
455 * optimization: local call analysis of inlined higher-order function
456 should converge more quickly, resulting in better code for complex
458 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
459 integer constants are handled more cleverly, especially when they
460 can be represented as sign-extended (signed-byte 32). (Based on a
461 patch by Douglas Katzman)
462 * optimization: IF/IF conversion should reliably result in sane code
463 when (some of) the results of the inner IF are always false or
465 * optimization: On x86oids, variable right shifts of machine words are
466 compiled into straight SAR/SHR, instead of going through the generic
469 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
470 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
472 * bug fix: :allocation slot option works for condition slots
474 * bug fix: redefining conditions does not lead to multiple evaluations of
475 hairy slot initfunctions anymore (lp#1164969)
476 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
478 * bug fix: function constants now work as initforms and default initarg
479 values of conditions (lp#539517)
480 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
481 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
482 * bug fix: no more bogus ## references when pretty printing backquoted
483 forms with non-trivial structure sharing. (lp#1161218)
484 * bug fix: Don't signal an error on (setf (documentation nil 'function)
485 "doc"). Signal a style-warning instead when trying to set documentation
486 of NIL for all other documentation types. (Reported by Zach
487 Beane; regression since 2e52fa05.)
488 * bug fix: modular arithmetic involving large constants and conditionals
489 should no longer result in spurious dead code elimination. (Reported by
491 * bug fix: our mach exception handler can seemingly called very early in
492 the program execution process on OS X 10.8.0. Try and handle that case
493 robustly, without potentially leaking mach ports too much.
494 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
496 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
497 * enhancement: the continuable error when defknown-ing over extant
498 fndb entries can be ignored by passing :overwrite-fndb-silently t
499 as a keyword argument to sb-c:defknown (after attributes). Useful
500 to allow defknown to be re-loaded. Use with :allow-other-keys t
501 for backward compatibility.
502 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
504 * bug fix: Prevent a make-array transform from modifying source forms
505 causing problems for inlined code. Thanks to Bart Botta.
506 (regression since 1.0.42.11-bis)
507 * bug fix: clear-output calls the correct gray stream routine,
508 sb-gray:stream-clear-output. (lp#1153257)
509 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
511 * bug fix: Better error messages for package operations (lp#1154776)
512 * bug fix: delete-package on a nonexistent package should signal a cerror.
513 (regression since 1.0.37.44).
514 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
515 (lp#1154946, lp#1072112)
516 * bug fix: compiling make-array no longer signals an error when the
517 element-type is an uknown type, a warning is issued instead.
518 Thanks to James Kalenius (lp#1156095)
519 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
520 produces wrong results for some inputs. (Thanks to Jan Moringen.)
523 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
524 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
526 * new feature: package local nicknames. See manual for details.
527 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
528 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
529 * enhancement: easier to use restarts for resolving name-conflicts
530 resulting from IMPORT, EXPORT, or USE-PACKAGE.
531 * enhancement: variant DEFPACKAGE forms now signal a full error with
532 restarts provided for resolving the situation. (lp#891351)
533 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
534 DEFPACKAGE forms can now signal a full error with restarts provided for
535 resolving the situation. See manual for details. (lp#891351)
536 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
537 (Thanks to Anton Kovalenko.) (lp#1102748)
538 * enhancement: backtrace improvements
539 ** secondary CLOS dispatch functions have better debug names (lp#503081)
540 ** easier to read method names in backtraces. See
541 SB-DEBUG:*METHOD-FRAME-STYLE*.
542 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
543 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
544 SB-DEBUG:BACKTRACE-AS-LIST.
545 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
546 information is available in less intrusive form as frame annotations.
547 * enhancement: SB-POSIX now provides MAP-ANON.
548 * enhancement: test-suite results are colorized, failures in red, unexpected
549 success in green. Works on Windows and on terminals with ANSI escape code
550 support. Can be disabled with --no-color.
551 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
552 (thanks to James M. Lawrence)
553 * bug fix: no more unused variable style warnings from RESTART-CASE
554 macroexpansion (lp#1113859)
555 * bug fix: no more unused variable style warnings when loading
556 sb-bsd-sockets.asd (lp#1114681)
557 * bug fix: deleting a package removes it from implementation-package
558 lists of other packages.
559 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
560 This does not fix the occasional "interrupt already pending" issue, though.
561 * bug fix: (setf (documentation 'x 'function)) and
562 (setf (documentation #'x t)) set documentation in different places.
563 (regression since 1.0.43.63)
564 * bug fix: build on newer glibc. (lp#1095036)
566 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
567 * optimization: LOOP expressions using "of-type character" have slightly
568 more efficient expansions.
569 * bug fix: very long (or infinite) constant lists in DOLIST do not result
570 in very long compile times or heap exhaustion anymore. (lp#1095488)
571 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
572 * bug fix: adjust-array ignored :initial-element for simple-vectors.
574 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
575 longer cause infinite loops (on circular data) or violate eqlity
576 constraints. (lp#1099708)
577 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
579 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
580 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
582 * enhancement: support for C-c to interrupt the foreground thread
583 on Windows. (Thanks to Anton Kovalenko.)
584 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
585 * enhancement: Safepoint builds on POSIX platforms can now optionally be
586 built without pseudo-atomic sequences and their run-time overhead.
587 * enhancement: Threads created outside of Lisp can enter Lisp through
588 alien callbacks and appear as Lisp threads for the duration of that
589 function invocation. On safepoint builds only.
590 * enhancement: Miscellaneous improvements to namestrings and underlying
591 calls to OS functions for file system access on Windows. (Thanks to
593 * enhancement: The MSI installer support for Windows now uses Windows
594 Installer XML at least version 3.5 and includes various usability
595 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
596 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
597 on Windows. (Thanks to Anton Kovalenko.)
598 * enhancement: The Windows backend now supports the x86-64 platform.
599 (Thanks to Anton Kovalenko.)
600 * bug fix: fasls are now once again directly executable (on platforms
601 supporting shebang lines, with a suitably-installed sbcl).
602 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
603 * bug fix: Fix CAS access to slots of direct instances of structure classes
604 in the presence of subclasses sharing the same conc-name.
605 * bug fix: Logical pathname namestrings on Windows have been changed to
606 be lower-case, to minimize differences between POSIX and Windows.
608 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
609 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
610 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
611 (NT 5.0) is no longer being maintained.
612 * notice: Starting with this version, SBCL on Windows no longer supports
613 building with disabled thread support.
614 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
615 * enhancement: New feature sb-dynamic-core allows the runtime to be
616 rebuilt or relocated without requiring changes to the core file on
617 all linkage table platforms. Required on Windows. (Thanks to Anton
619 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
620 * enhancement: I/O on Windows unnamed pipes is interruptible
621 asynchronously using interrupt-thread, timers when running on Windows NT
622 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
624 * enhancement: Support for the experimental safepoint-based stop-the-world
625 protocol on the PowerPC platform.
626 * bug fix: Non-blocking reads from the Windows console were not necessarily
627 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
628 * bug fix: stability of threads on Windows has been improved upon through
629 an updated stop-the-world protocol (thanks to Anton Kovalenko).
631 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
632 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
633 (COMPILE and COMPILE-FILE still do.)
634 * optimization: the SPARC backend now supports the precise generational
635 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
636 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
637 * enhancement: add experimental support for the SB-THREAD feature and the
638 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
639 Threads are enabled by default, and this version of SBCL is considered
640 to be the last and final release to officially support building with
642 * optimization: The compiler no longer rotates loops in some cases where
643 this transformation actually lead to worse code being generated.
644 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
645 symbol-macros by lexical bindings.
646 * bug fix: stack allocation was prevented by high DEBUG declaration in
648 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
649 (thanks to SANO Masatoshi)
650 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
651 :JUNK-ALLOWED was true.
652 * bug fix: type derivation inferred overly conservative types for
653 unions of array types. (lp#1050768)
655 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
656 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
657 source annotation of DISASSEMBLE output. Defaults to T.
658 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
659 WAIT-P argument added to WITH-RECURSIVE-LOCK.
660 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
662 * enhancement: Optional features (not enabled by default) allow the
663 use of signals for inter-thread synchronization to be reduced on certain
664 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
665 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
666 to test these experimental features. Known remaining bugs include minor
667 thread safety issues, less timely freeing of memory by GC, and certain
668 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
669 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
670 comparisons, particularly on almost-sorted inputs.
671 * bug fix: Reading floats with large exponents no longer takes too much time
672 before reporting that the exponent is too large.
673 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
674 correctly when the received datagram is larger than the provided buffer.
675 (lp#1023438, thanks to Robert Uhl)
676 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
677 a SYMBOL-VALUE form with a constant symbol argument.
678 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
679 into a DEFCAS defined place was used as the place.
680 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
681 for from bit-vectors.
682 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
683 lead to internal errors or crashes (lp#1058799).
684 * documentation: a section on random number generation has been added to the
687 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
688 * enhancement: implicit generic function warnings now specify the package
689 in which the new generic function is being created.
690 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
691 updates of CAS-able places (similar to Clojure's swap!).
692 * enhancement: run-program no longer decodes and re-encodes environment when
693 :environment argument is not provided. (lp#985904)
694 * enhancement: errors during compiler-macro expansion no longer cause
695 runtime errors, only a compile-time warning, otherwise behaving as if
696 the compiler macro had declined to expand.
697 * optimization: On x86-64, code alignment of block headers is done with
698 multi-byte NOPs now instead of repetitions of the single-byte NOP.
699 * optimization: MAP-INTO is substantially faster when the target sequence is
700 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
701 thanks to James M. Lawrence)
702 * optimization: the compiler no longer heap-conses to check exits in cases
703 where the exit function is dynamic extent, or when it can prove the exit
704 function cannot escape. (lp#1002534)
705 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
706 element type, and vectors that aren't SIMPLE-ARRAYs.
707 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
708 speed (around 1/3 the time in some cases), and a little better in terms of
709 comparison calls. (Thanks to Takeru Ohta)
710 * bug fix: On SPARC, a limitation on the number of code constants emittable
711 by the compiler has been lifted, allowing certain long functions to
712 compiled and assembled which had previously been unsupported; fixes
713 cl-bench on this ISA (lp#1008996).
714 * bug fix: potential for infinite recursion during compilation of CLOS slot
715 typechecks when dependency graph had loops. (lp#1001799)
716 * bug fix: error forms reported with some program-errors were not escaped
718 * bug fix: functions from EVAL are now on more equal footing with functions
719 from COMPILE. (lp#1000783, lp#851170, lp#922408)
720 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
721 objects as its :METHOD-COMBINATION argument, not just lists designating
722 method combinations. (lp#936513)
723 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
725 * bug fix: restore build on solaris/sparc. (lp#1008506)
726 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
727 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
728 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
729 as keyword arguments no longer accidentally match unevaluated symbols
731 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
732 parameter was zero, now it signals an error. (lp#905817, fixed since
734 * bug fix: run-program with :pty t no longer makes the pty as the process's
736 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
739 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
740 * RANDOM enhancements and bug fixes:
741 ** bug fix: the range and distribution of random integers could be
742 catastrophically wrong when the compiler derived the type of its
743 argument as a disjoint set of small integers.
744 ** bug fix: the distribution of random integers is now completely
745 uniform even when the specified limit is not a power of two.
746 (Previously some values could be about 0.1 % more probable than
747 others in the worst case.) (lp#309467)
748 ** RANDOM on large integer arguments is generally faster and conses
749 less than before; this is visible for fixnums above a length of
750 about 24 bits, but extremely so for bignums: the old implementation
751 used time and space quadratical in the size of the argument there,
752 the new one is linear.
753 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
754 main entry point, SB-EXT:QUIT is deprecated.
755 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
756 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
757 * enhancement: FASL loading no longer grabs the world-lock.
758 * enhancement: GENCGC reclaims space more aggressively when objects being
759 allocated are a large fraction of the total available heap space.
761 * enhancement: backtraces show the correct number of arguments for frames
762 called with too many arguments.
763 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
765 * enhancement: ASDF has been updated 2.21.
766 * optimization: fewer uses of full calls to signed modular functions.
768 * optimization: typechecking alien values is typically 5 x faster.
769 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
771 * bug fix: file compilation performance issues when dumping subtypes
772 of CHARACTER (lp#994487)
773 * bug fix: fixed disassembly of some SSE instructions on x86-64.
774 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
775 OPEN. (lp#969352, thanks to Kambiz Darabi)
776 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
778 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
779 classoid even if X was not the proper name of the class. (lp#941102)
780 * bug fix: declaration leakage between lexical environments due to careless
781 use of NCONC in MAKE-LEXENV. (lp#924276)
782 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
783 *default-pathname-defaults* contains NAME or TYPE components.
784 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
785 from CL package, e.g. (loop . 10).
786 * bug fix: run-program with existent or non-existent files for :output or
787 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
788 returns NIL instead of signalling an obscure error.
789 * bug fix: fix miscompilation of some logand forms with large constant
790 arguments. (lp#974406)
791 * bug fix: account for funcallable-instance objects properly in ROOM.
792 * bug fix: incorrect octets reported for c-string decoding errors.
794 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
796 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
797 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
798 allowing faster release of memory back to the OS. (lp#991293)
799 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
800 existing deadline for the dynamic scope of its body.
801 * bug fix: compiler-internal interval arithmetic needed to be more
802 conservative about open intervals when operated on by monotonic but not
803 strictly-monotonic functions. (lp#975528)
804 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
805 it's also slightly faster. (lp#998926)
806 * bug fix: better error messages for malformed declarations.
808 * bug fix: define-condition didn't return the name of the defined condition.
810 ** improved docstrings: REPLACE (lp#965592)
812 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
813 * bug fix: fix copy-structure. When copying from stack to heap, garbage
814 could end up in the heap making GC unhappy.
815 (Thanks to James Knight, lp#911027)
817 ** SBCL can now be built using Clang.
818 ** ASDF has been updated 2.20.
819 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
820 * bug fix: don't complain about a too-hairy lexical environment for inlining
821 when the function has never been requested for inlining. (lp#963530)
823 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
824 * enhancements to building SBCL using make.sh:
825 ** --fancy can be specified to enable all supported feature enhancements.
826 ** --with-<feature> and --without-<feature> can be used to specify
827 which features to build with.
828 ** --arch option can be used to specify the architecture to build for.
829 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
830 full-blows cross-compilation.)
831 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
832 which allows specifying name of the default interning package for the
834 * enhancement: when *READ-EVAL* is true, arrays with element type other than
835 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
836 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
837 null alien when malloc() fails. (lp#891268)
838 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
839 conditions can be conveniently accessed through function with the same
840 name, analogously to CONTINUE.
841 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
842 from the printer by type, causing an error marker to be printed instead.
843 (Thanks to Attila Lendvai)
844 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
845 generally behave better when errors occur during printing.
846 * enhancement: the test runner now takes a --report-skipped-tests argument
847 to report the individual tests skipped as well as the number of skipped
849 * enhancement: undefined functions now appear in backtraces as ("undefined
850 function") instead of ("bogus stack frame") on x86oids.
851 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
852 deadlock errors are reported in an easier-to-decipher manner.
853 * enhancement: DESCRIBE on type designators reports the expansion in more
855 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
856 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
857 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
858 * enhancement: better disassembly of segment-prefixes on x86 and other
859 instruction prefixes (e.g. LOCK) on x86 and x86-64.
860 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
861 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
862 * optimization: SUBSEQ on vectors of unknown element type is substantially
864 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
865 be stack-allocated. (lp#902351)
866 * optimization: the compiler is smarter about representation selection for
867 floating point constants used in full calls.
868 * optimization: the compiler no longer refuses to coerce large fixnums to
869 single floats inline, except on x86 where this limitation is still
871 * optimization: truncation operations on integers with constant divisor
872 arguments 1 and -1 are optimized away.
873 * bug fix: deadlock detection could report the same deadlock twice, for
874 two different threads. Now a single deadlock is reported exactly once.
875 * bug fix: interval-arithmetic division during type derivation did not
876 account for signed zeros.
877 * bug fix: compiler error when typechecking a call to a function with
878 non-constant keyword arguments.
879 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
880 * bug fix: condition slot accessors no longer cause undefined function
881 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
882 form that defines them. (lp#896379)
883 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
885 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
886 bogusly report NIL, T.
887 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
888 required arguments ignored and performed assignments to others.
890 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
891 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
892 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
893 * bug fix: redefining a function whose previous definition contained an
894 unknown type no longer causes a style-warning. (lp#806243)
895 * bug fix: undefined functions now appear in backtraces as ("undefined
896 function") instead of ("bogus stack frame") on non-x86oids.
897 * bug fix: backtraces are no longer cut off at ("undefined function") when
898 called under certain circumstances (involving a caller-allocated stack
900 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
901 systems. (regression since 1.0.53)
902 * bug fix: GC deadlocks from dladdr() on certain platforms.
903 * bug fix: broken standard streams no longer automatically cause recursive
904 errors on debugger entry.
905 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
906 (regression since 1.0.53)
907 * bug fix: attempts to stack allocate a required argument to a function with
908 an external entry point caused compiler-errors.
909 * bug fix: compiler notes for failed stack allocation for a function argument
910 no longer claim to be unable to stack allocate the function.
911 * bug fix: COERCE now signals a type-error on several coercions to
912 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
913 * bug fix: missing failure-to-stack-allocate compiler notes for some
914 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
915 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
917 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
919 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
920 * minor incompatible changes:
921 ** RENAME-FILE on a symbolic links used to rename the linked-to file
923 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
924 directory, but now signal an error instead. Use TRUENAME to resolve the
925 pathname if you wish to delete the linked directory, and DELETE-FILE if
926 you wish to delete the
927 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
928 symbols associated with it will trigger a compile-time warning.
929 * thread-related enhancements:
930 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
931 Many thanks to generous donors!)
932 ** Threading is now more reliable on non-Linux platforms. We still don't
933 consider threads on non-Linux platforms good enough to enable them by
934 default, but they're in a clearly better shape now.
935 ** Deadlines supported now on all platforms.
936 ** All blocking functions in the threading API now have a :TIMEOUT
938 ** Semaphore notification objects have been added to SB-THREAD.
939 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
940 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
941 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
942 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
943 using an API anologous to defining new SETFable places.
944 * GC-related enhancements and bug fixes:
945 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
946 and Gb suffixes. Default is megabytes as before.
947 ** on GENCGC targets, the default dynamic space size is now 512Mb for
948 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
949 exception, defaulting to mere 444Mb to fit under default ulimits.) The
950 new defaults are in place to prevent hitting swap on low-end systems.
951 Use build-time option --dynamic-space-size to build an SBCL with
952 another default, or the runtime option to adjust the size at startup: a
953 good size is at most equal to the amount of physical memory the system
955 ** on GENCGC targets, nursery and generation sizes now default to 5% of
957 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
958 refuses to create SIMPLE-FUN objects.
959 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
961 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
962 validation of pointer objects as GENCGC does, instead of a
963 comparatively weak bounds-check against the heap spaces.
964 * SB-BSD-SOCKETS bug fixes:
965 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
966 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
967 systems with getaddrinfo().
968 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
969 safe outside systems with getaddrinfo().
970 * enhancement: ASDF has been updated 2.019.
971 * enhancement: special-case TCO prevention for functions which never return
972 extended to untrusted types, keeping one more frame's worth of debug
973 information around in many cases.
974 * enhancement: debug-names of anonymous and local function are more
975 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
976 * enhancement: on win32, ABS of complex floats guards better against
977 overflows. (lp#888410)
978 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
979 process exiting with code 1. (lp#676987)
980 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
981 the system where on the filesystem the SBCL sources themselves are
982 located. (Thanks to Zach Beane)
983 * enhancement: the compiler is now able to derive tighter bounds for
984 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
985 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
986 correctly, even on wide-fixnum builds. (lp#887220)
987 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
988 resolved to directories.
989 * bug fix: type mismatch when assigning to lexical variables no longer
990 result in fasl-dumping internal type objects. (lp#890750)
991 * bug fix: type mismatch on (SETF AREF) and function return values no
992 longer result in fasl-dumping internal type objects.
993 * bug fix: With several combinations of argument types, for example (EXPT
994 <integer> <(complex double)>), EXPT now uses double-precision throughout
995 instead of partially calculating only to single-precision. (lp#741564;
996 thanks to Lutz Euler)
997 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
998 objects when interrupted by GC on PPC.
1000 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1001 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1002 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1003 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1004 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1005 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1006 targets is now 63 bits (up from 61).
1007 * enhancement: DESCRIBE now reports a lambda-list and source location
1008 for complext setf-expanders.
1009 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1010 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1011 of multiple-valued places to be set to NIL, instead of signalling an
1012 error (per a careful reading of CLHS 5.1.2.3).
1013 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1014 * bug fix: repair crash in x86oid darwin signal handling emulation
1015 when built with certain compilers.
1016 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1017 rotation arguments on x86-64. (lp#882151)
1018 * bug fix: low-level control flow optimisations could result in bogus
1019 code in functions with tail and non-tail calls to local functions on
1020 x86oids. (lp#883500)
1021 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1022 to emit literal characters > (code-char 4095), for comparisons with
1023 constant characters.
1024 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1025 on 64 bit platforms. (lp#881445)
1026 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1027 delete the wrong file when using relative pathnames. (lp#882877)
1028 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1029 sequences and :KEY NIL.
1031 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1032 * enhancement: ASDF has been updated to version 2.017.
1033 * enhancement: the --core command line option now accepts binaries with
1035 * enhancement: when built with :sb-core-compression, core files (regular
1036 or executable) can be compressed with zlib. Use the :COMPRESSION
1037 argument to SAVE-LISP-AND-DIE to specify a compression level.
1038 * enhancement: --[no-]merge-core-pages determines whether the runtime
1039 hints the operating system that identical core pages between SBCL
1040 processes should share the same physical memory. Default is to only
1041 enable this for compressed cores.
1042 * optimization: SLEEP no longer conses.
1043 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1044 or bit-vectors when using the standard pretty-print dispatch table.
1045 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1047 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1048 AREF, CHAR, etc. (lp#826971)
1049 * bug fix: compiler-errors causes by integer arguments with composed of
1050 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1051 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1052 expressions. (lp#770184)
1053 * bug fix: complex single float literals are correctly aligned when used
1054 as arguments of arithmetic operators.
1055 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1056 fixnum is correct. (reported by Peter Keller)
1057 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1058 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1060 * bug fix: redefining classes such that slots with custom allocation are
1061 added or removed works again.
1063 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1064 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1065 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1066 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1067 * enhancement: added support for socket keepalive timeout intervals
1068 and probe counts on Linux.
1069 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1070 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1071 * enhancement: added new toplevel options --quit and --non-interactive
1073 * enhancement: the Windows port of SBCL now builds and runs on Wine
1074 (thanks to Anton Kovalenko).
1075 * enhancement: more, and more correct, SSE instruction definitions on
1076 x86-64 (thanks to Alexander Gavrilov).
1077 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1078 to help the processor execute spin loops, when applicable. Currently
1079 implemented for x86 and x86-64.
1080 * optimization: unsigned integer divisions by a constant are implemented
1081 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1082 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1083 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1084 instructions. (lp#814688)
1085 * bug fix: COERCE to unfinalized extended sequence classes now works.
1086 (reported by Jan Moringen; lp#815155)
1087 * bug fix: a compiler error during typecheck generation, reported by Eric
1088 Marsden. (lp#816564)
1089 * bug fix: obsolete instance protocol fires when shared slots are added
1091 * bug fix: fixed-format floating point printing with scaling factors.
1093 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1094 backtraces. (lp#818460)
1095 * bug fix: better backtraces for interrupted syscall frames on x86.
1097 * bug fix: SSE comparison instructions can be disassembled even when one
1098 operand is in memory. (lp#814702)
1099 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1100 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1101 type information associated with the VALUES form.
1102 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1104 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1105 first write (lp#561642).
1106 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1107 * bug fix: bound propagation involving conversion of large bignums to
1108 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1110 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1111 functions; reported by Lutz Euler (lp#826459).
1112 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1115 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1116 * enhancement: errors from FD handlers now provide a restart to remove
1117 the offending handler.
1118 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1120 * enhancement: location of user or system initialization file can now easily
1121 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1122 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1123 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1124 the thunk, as a keyword argument, :arguments.
1125 * enhancement: constraint propagation is simplified (and sped up) when
1126 COMPILATION-SPEED > SPEED.
1127 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1128 * enhancement: debugger understands &MORE arguments better.
1129 * optimization: extracting bits of a single-float on x86-64 has been
1130 optimized. (lp#555201)
1131 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1132 when (> SPEED SPACE).
1133 * optimization: local call trampolines (x86 and x86-64) are emitted
1135 * optimization: implicit value cells for dynamic-extent closed-over bindings
1136 on x86 and x86-64 can hold unboxed values as well.
1137 * meta-optimization: improved compilation speed, especially for large
1138 functions. (lp#792363 and lp#394206)
1139 * bug fix: bound derivation for floating point operations is now more
1140 careful about rounding possibly closing open bounds. (lp#793771)
1141 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1142 backwards incompatible change in 1.0.48.27)
1143 * bug fix: occasional debugger errors in when a type-error occured in a
1144 function with dynamic-extent &rest list.
1145 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1146 boa-construtors can be used to initialized structure slots.
1147 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1148 (lp#795705, regression)
1149 * bug fix: DIRECTORY works better on logical pathnames.
1150 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1151 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1152 * bug fix: the compiler no longer constant-folds NaNs in
1153 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1154 * bug fix: FORMAT now handles floating point rounding correct, eg.
1155 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1157 * bug fix: style warning during lambda-list introspection of generic
1158 functions with both optional and key argments.
1159 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1160 folding. (lp#729765)
1161 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1164 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1165 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1166 interrupts for its body.
1167 * enhancement: source locations are now available for files loaded as
1168 source, compile-time-too evaluation, and initialization files.
1169 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1170 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1171 when a temporary file is used for compilation.
1172 * enhancement: ASDF has been updated to version 2.015.3.
1173 * enhancement: backtraces involving frames from the default evaluator are
1175 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1177 * enhancement: more informative compile-time warnings and runtime errors for
1178 type-errors detected at compile-time.
1179 * enhancement: deadlock detection for mutexes and spinlocks.
1180 * enhancement: dynamic-extent for &rest lists stack allocate only their
1181 spines, not their argumets. While portable code should not rely on this,
1182 particularly in combination with inlining, it should make dynamic-extent
1183 easier to use safely.
1184 * enhancement: SB-POSIX improvements:
1185 ** WNOHANG and WUNTRACED are exported.
1186 ** SYSCALL-ERROR now also provides the name of the failing system call.
1187 * enhancement: --script improvements:
1188 ** errors on standard input, output, and error streams are handled and
1189 cause scripts to exit silently, making them easier to use in shell
1191 ** backtraces from scripts now go to standard error instead of the
1192 terminal even if one is available.
1193 ** --script can be an argument, causing the script to be loaded from
1195 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1196 strings to foreign memory.
1197 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1198 a file, making it easier to understand heap dynamics.
1199 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1200 allows the compiler to automatically elide rest-list allocation so long as
1201 the call sites are in functions that the compiler knows cannot escape.
1203 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1204 especially in safe code when none of the required arguments have changed
1206 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1207 uninterruptible, as well as blocking reads from socket streams created
1208 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1209 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1210 from the to-char if the from-char is not a dispatch-macro character.
1211 * bug fix: references to undefined variables in function calls that are
1212 optimized away now signal a runtime error. (lp#722734)
1213 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1214 types from a function defined in the same file. (regression from
1216 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1218 * bug fix: spurious errors during QUIT when standard streams were closed.
1220 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1221 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1222 years, is now no longer supported.
1223 * enhancement: read() and write() have been added to SB-POSIX.
1224 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1225 accurately, allowing better typechecking of call-sites.
1226 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1227 are no longer caught. (reverted to pre 1.0.34 behaviour)
1228 * optimization: slightly faster ISQRT. (lp#713343)
1229 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1230 * bug fix: TRACE behaves better when attempting to trace undefined
1231 functions. (lp#740717)
1232 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1233 to (FUNCALL #'(LAMBDA ...) ...).
1234 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1235 a compile-time error. (lp#720382)
1236 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1238 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1239 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1240 optimization. (regression from 1.0.45.18/1.0.46.15)
1241 * bug fix: package locks did not protects against compile-time side-effects
1242 of DEFUN. (lp#675584)
1243 * bug fix: --dynamic-space-size argument is validated more carefully.
1245 * bug fix: memory fault from printing a malformed simple-condition.
1247 * bug fix: redefining classes so that slot-definition classes change now
1248 engages the obsolete instance protocol. (lp#766271)
1249 * bug fix: constant improper lists could break source coverage recording.
1251 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1252 could exhaust stack.
1254 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1255 * bug fix: fix mach port rights leaks in mach exception handling code on
1256 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1258 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1259 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1260 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1261 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1262 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1263 processed using EVAL -- now the appropriate toplevel form is reported instead.
1264 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1265 declarations. (lp#726331)
1266 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1267 that NIL/NULL is excluded from the type.
1268 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1270 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1271 and its compatriots.
1272 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1273 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1274 stack-allocated values out of their dynamic-extent. (lp#310175)
1275 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1276 x86-64 builds caused a type-error.
1277 * bug fix: calling COMPILE with something else than a lambda-expression as the
1278 second argument reports a more sensible error. (lp#718905)
1279 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1280 are detected. (lp#520607)
1281 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1283 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1284 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1285 methods. (regression from 1.0.45.18)
1286 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1287 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1288 * bug fix: several foreign functions accepting string also accepted NIL and
1289 consequently caused a memory fault at 0 now signal a type-error instead.
1291 * bug fix: under rare circumstances, constraint propagation could rewrite a
1292 variable reference to refer to a variable not in scope, causing an error
1293 during physical environment analysis when attempting to close over the
1294 variable. (lp#551227)
1295 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1297 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1298 * enhancement: largefile support on Solaris.
1299 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1300 arguments (lp#710017)
1301 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1302 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1304 * optimization: ERROR and CERROR are approximately 5 times faster.
1305 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1306 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1307 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1308 up instance creation in those cases.
1309 * optimization: arithmetic operations with multiple constant arguments in now
1310 have them reduced at compile-time. (lp#676414)
1311 * optimization: determining current character position on string-streams for
1312 pretty-printing was overly slow.
1313 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1314 lifetime analysis to overwrite closed-over variables (lp#681092).
1315 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1316 were not handled correctly (lp#713063).
1317 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1319 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1320 mistake. (lp#667297).
1321 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1322 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1323 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1324 unintern the wrong symbol with the same name. (lp#693796)
1325 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1326 making it possible to restore the initial table if it has been messed up.
1329 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1330 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1331 Refer to documentation for details.
1332 * enhancement: ASDF has been updated to version 2.010.
1333 * optimization: mutated closed-over variables that are only accessed by
1334 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1335 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1336 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1337 * optimization: UNWIND-PROTECT cleanup functions are now declared
1339 * bug fix: backtracing function with &REST arguments now shows the full
1340 argument list. (lp#310173)
1341 * bug fix: return types for functions with complex lambda-lists are now
1342 derived properly (lp#384892)
1343 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1344 long string arguments slowed the compiler down to a crawl.
1345 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1346 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1347 in the DEFMETHOD body.
1348 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1349 messages, being instead replaced with the corresponding function name.
1350 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1351 operators. (lp#309448)
1353 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1354 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1355 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1356 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1358 * enhancement: default dynamic-space size can be configured at build-time
1359 without touching source, using the --dynamic-space-size argument to make.sh.
1360 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1361 qualities, and mentions ALWAYS-BOUND declarations.
1362 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1364 * enhancement: ASDF has been updated to 2.009.
1365 * enhancement: the system detects known type-erros in calls better,
1366 signalling a full warning about violated proclaimed FTYPEs and violations
1367 of derived FTYPEs within the same file, including self-calls.
1368 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1369 * optimization: constant-folding exploits numeric and character types, in
1370 addition member types.
1371 * optimization: numeric, character and member types that are inhabited by
1372 exactly one value are tested with EQL.
1373 * optimization: more conditional branches are eliminated during IR1.
1374 Branches are simplified before performing if/if-conversion, and simple
1375 equivalent branches (that only read the same constant or variable) are
1377 * improvements to the Windows port:
1378 ** change: canonical unparsing form for pathname namestrings now uses / as
1379 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1380 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1381 on Windows. (thanks to Kalyanov Dmitry)
1382 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1384 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1385 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1386 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1387 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1389 * bug fix: interrupts arriving during CL:OPEN caused an error.
1390 * bug fix: overeager character buffering could cause input to block
1391 spuriously when reading from a pipe (lp#643686)
1392 * bug fix: more efficient timer expiry should avoid starvation on systems
1393 where number of SIGALRMs per second is restricted. (lp#375515)
1394 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1395 * bug fix: compile-times no longer scale linearly with the size of
1396 quoted lists in source-code. (lp#654289)
1397 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1398 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1399 so badly. (lp#654485)
1400 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1401 an error for eg. STRUCTURE. (lp#458015)
1402 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1403 (lp#613871, thanks to Roman Marynchak)
1404 * bug fix: more reliable &REST list type derivation. (lp#655203)
1405 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1406 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1407 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1408 also declared NOTINLINE. (lp#655581)
1409 * bug fix: the compiler could attempt to emit constant left shifts of
1410 greater value than n-word-bits. (lp#309063)
1411 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1412 type information for the function being set. (lp#659220)
1413 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1414 containing self-calls were recompiled with a new signature, and failed
1415 to warn when a self-call using the old signature was left in. (lp#655126)
1416 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1417 :DEFAULT when the default external had character size other than 8 bits.
1419 * bug fix: derived types of functions in the same file were implicitly
1420 trusted, leading to potential heap corruption when those function were
1421 defined incompatibly. (lp#657499)
1422 * bug fix: existing ASDF source registries are ignored when building
1423 contribs (lp#659105)
1424 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1425 (lp#655824, thanks to Roman Marynchak)
1426 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1427 package-lock violation was detected. (lp#660752)
1428 * bug fix: the system can store different docstrings for a single function
1429 under different names. (lp#661631, regression from 1.0.29.24)
1430 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1431 properly. (lp#384801)
1432 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1433 of specified length could confuse the type derivation in unsafe code.
1435 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1436 fork with multiple Lisp threads running is made on every platform,
1437 not just Darwin. (lp#451111)
1438 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1439 around when core was saved, which could cause undefined behaviour when the
1441 * bug fix: Allow UNTRACE of functions that are no longer defined
1442 (lp#667657, thanks to Attila Lendvai)
1443 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1444 compile-time warning (lp#664373, thanks to Stas Boukarev)
1446 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1447 * incompatible change: FD-STREAMS no longer participate in the serve-event
1448 event-loop by default. (lp#316072)
1449 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1450 affects streams from CL:OPEN.
1451 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1452 default, but this is liable to change: applications needing serve-event
1453 for socket streams should explicitly request it using :SERVE-EVENTS T
1455 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1457 * enhancement: CLOS effective method functions and defclass slot typechecking
1458 function now have debug names for use in backtraces and profiles.
1459 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1461 * enhancement: symbols are printed using fully qualified names in several
1462 error and warning messages which are often associated with package
1463 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1464 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1465 thanks to Andrew Golding)
1466 * bug fix: reading /proc files on Linux works. (lp#425199)
1467 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1469 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1470 breaking code that tried to write the value of a printer control variable.
1471 (lp#581564, thanks to Stas Boukarev)
1472 * bug fix: WRITE compiler macro did not handle output stream designators
1473 correctly. (lp#598374, thanks to Stas Boukarev)
1474 * bug fix: better availability of names of foreign functions in backtraces
1475 on Linux. (lp#626962, thanks to Stas Boukarev)
1476 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1477 lp#627581, thanks to Josh Elsasser and Jim Wise)
1478 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1479 thanks to Josh Elsasser)
1480 * bug fix: using aliases for builtin classes as defmethod specializers
1481 without adding DEFTYPEs for them works. (lp#618387)
1482 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1484 * bug fix: legally dynamic-extent lists and vectors used as
1485 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1486 * bug fix: inline-expansion creating references to dead lambda-variables
1487 (lp#454681, thanks to Alexey Dejneka)
1488 * bug fix: better error message for bogus numerical arguments to RANDOM.
1489 (lp#598986, thanks to Stas Boukarev)
1490 * bug fix: the compiler occasionally inlined references from incompatible
1491 environments occurs. (lp#308951)
1492 * bug fix: the compiler threw an error when trying to compile a local
1493 function (labels or flet) known to take a specialized complex argument.
1494 (not in launchpad, reported by sykopomp in #lispgames)
1495 * bug fix: package-locks failed to protect against compile-time effects of
1496 DEFUN when the symbol previously had a macro definition. (lp#576637)
1497 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1498 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1499 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1500 * bug fix: evaluation in debugger REPL works using the global context when
1501 in frames that do not have sufficient debug information.
1502 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1504 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1506 * bug fix: interrupt taking longer than the requested period caused SLEEP
1507 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1509 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1511 ** Cross-compilation host is now specified to make.sh using
1512 command-line argument --xc-host=<command> instead of a positional
1513 argument. (thanks to Daniel Herring)
1514 ** Install location can be specified to make.sh using command-line
1515 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1516 * optimization: The default implementation of
1517 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1518 * enhancement: Explicit memory barrier operations are now available for use
1519 by multithreaded code. See documentation for details.
1520 * enhancement: Experimental support for threading on Linux/PPC.
1521 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1522 * bug fix: EXPT signals an error if first argument is a zero and second
1523 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1524 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1525 (lp#576594, thanks to Roman Marynchak)
1526 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1527 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1529 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1530 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1531 cached, leading to many fewer expensive calls to
1532 COMPUTE-APPLICABLE-METHODS.
1533 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1534 CLASS argument, search for and call an appropriate optimized ctor function
1536 * bug fix: WRITE always returns the correct value.
1538 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1539 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1540 * bug fix: Name conflicts between symbols passed as arguments to a single
1541 call to IMPORT no longer add multiple symbols with the same name to the
1542 package (detectable via DO-SYMBOLS).
1543 * bug fix: support building without the dlshim on darwin x86 and x86-64
1545 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1547 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1548 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1550 * bug fix: linkage-table entries on PPC now no longer overflow their
1551 space allocation (potentially causing crashes if they are written out
1553 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1554 platforms, preventing the GC from seeing stale pointers on the control
1555 stack in subsequent GCs (which would, and does, break invariants).
1556 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1557 * bug fix: Literal characters with code points greater than about 32767
1558 now work on PPC UNICODE builds.
1559 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1560 high order bits are explicitly cleared out. In some contrived situations,
1561 this could lead to wrong results in mixed real/complex float arithmetic.
1562 * bug fix: Fix function/macro redefinition warnings when building with
1563 clisp. (lp#576787, thanks to Josh Elsasser)
1564 * new platform: experimental support for ppc/openbsd (thanks to Josh
1566 * bug fix: Floating-point traps now work on ppc/linux.
1568 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1569 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1570 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1571 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1572 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1573 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1574 SB-THREAD:GRAB-MUTEX.
1575 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1576 contain additional data structures and tools for concurrent programming;
1577 at the moment it contains a lock-free queue, and a lock-free mailbox
1579 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1580 GET-MUTEX but takes &key rather than &optional parameters. Also added
1581 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1583 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1584 SB-THREAD:WAIT-ON-SEMAPHORE.
1585 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1587 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1588 conditions to defer the deadline for forever.
1589 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1591 * enhancement: errors from NO-APPLICABLE-METHOD and
1592 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1593 generic function call.
1594 * enhancement: SB-BSD-SOCKET improvements
1595 ** sockets and socket streams now have a more informative printed
1596 representation based on the corresponding SOCKET-NAME and
1598 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1600 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1601 CL:CLOSE when appropriate, and no longer disassociates the stream
1602 from the socket if close failed. (lp#543951)
1603 * improvements to the instrumenting profiler
1604 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1605 ** optimization: counters no longer use locks for the overflow mode.
1606 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1607 incurred an off-by-one miscount.
1608 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1609 * enhancement: improved DEFMETHOD pretty-printing.
1610 * enhancement: perform range reduction when arguments are too large for
1611 x87's transcendentals (instead of returning 0). (lp#327192)
1612 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1613 some of CL-PPCRE's macros. (lp#570079)
1614 * enhancement: our machine code is slightly less hostile to valgrind on
1616 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1617 to Robert Swindells and Aleksej Saushev)
1618 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1619 * bug fix: a rare case of startup-time page table corruption.
1620 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1621 to timeouts could be left in an inconsistent state.
1622 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1623 * bug fix: misoptimization of multiplication by one in
1624 (SB-C::FLOAT-ACCURACY 0) policies.
1625 * bug fix: miscounts in SB-PROFILE.
1626 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1627 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1628 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1629 up itself" (March 2010) for further details.
1630 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1631 against length of the list if the element is found before the specified
1632 END is reached. (thanks to Alec Berryman, lp#554385)
1633 * bug fix: errors signalled during package graph modification no longer
1634 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1635 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1636 :SB-DOC feature. (lp#552564)
1637 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1638 * bug fix: more robust runtime executable path detection. (lp#375549)
1639 * bug fix: GCD always returns positive values. (lp#413680)
1640 * bug fix: Converting division to multiplication by reciprocal handles
1642 * bug fix: We were too eager in eliding range reduction tests on x87.
1643 The maximal magnitude is 2^63, not 2^64.
1644 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1646 * bug fix: Maybe restore buildability on Alpha.
1647 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1649 * bug fix: RANDOM-STATE can be printed readably again.
1650 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1651 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1652 types) could result in type mismatches during compilation.
1654 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1655 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1656 stack frame thrown from.
1657 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1658 compiler optimization qualities inside dynamic extent of its body.
1659 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1660 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1662 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1663 constraint propgation, allowing better compilation eg. when used to
1664 access structures with WITH-SLOTS. (lp#520366)
1665 * optimization: the compiler is now more aware of the type of the underlying
1666 storage vector for multidimensional simple arrays resulting in better code
1667 for accessing such arrays.
1668 * optimization: passing NIL as the environment argument to TYPEP no longer
1669 inhibits optimizing it. (lp#309788)
1670 * optimization: more efficient register usage when handling single-float
1671 arguments on x86-64. (thanks to Lutz Euler)
1672 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1673 pre-allocated temporary vectors. (lp#496249)
1674 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1675 in :INITIAL-CONTENTS. (lp#523612)
1676 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1677 functions. (lp#524707)
1678 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1679 WITH-SLOTS usages during compilation.
1680 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1681 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1682 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1683 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1684 instruction (tested on x86oid linux with ud2-breakpoints).
1685 * bug fix: slam.sh now works on win32.
1686 * bug fix: better differences of numeric types. (lp#309124)
1687 * bug fix: arrays declared intersection and union types can have their
1688 upgraded element type derived. (lp#316078)
1689 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1690 threads started during profiling. (lp#472499)
1691 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1693 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1694 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1695 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1696 values instead of signaling an error. (lp#309093)
1697 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1699 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1700 declarations (lp#497321)
1701 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1702 and failed to detect circular lists (lp#452008)
1703 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1705 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1706 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1707 due to it, so that handlers can run.
1708 * bug fix: reparsing undefined types if they have become defined since
1709 parsing. (lp#309128)
1710 * bug fix: missing &REST type in a proclamation for a function with both
1711 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1712 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1713 expanded calls (lp#542174)
1714 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1715 than just at toplevel form.
1717 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1718 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1719 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1720 but work on type specifiers.
1721 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1722 to name a type specifier.
1723 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1724 specifier is valid where "valid" basically means "would be accepted as
1725 second argument of TYPEP".
1726 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1727 returns the function's declared, or derived FTYPE.
1728 * new feature: SB-POSIX now supports accessing the d_ino member of
1729 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1730 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1731 provide for seeding a RANDOM-STATE object with user-provided data or
1732 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1733 attempt to initialize the returned state from the operating system's
1734 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1735 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1736 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1737 * bug fix: Fix grammar and style issues for the docstrings of
1738 printer-related variables and functions. (Thanks to mon_key; launchpad
1740 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1742 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1743 in a row even though a handler defered the deadline long into the
1745 * bug fix: A deadline handler was run without interrupts enabled for a
1746 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1747 in infinitely spinning, non-killable threads.
1748 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1749 before reaching the erring stack frame.
1750 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1751 real power. (launchpad bug lp#525949)
1752 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1753 GENCGC platforms. (launchpad bug lp#529014)
1754 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1755 (launchpad bug lp#525916)
1756 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1757 (Thanks to Robert Goldman)
1759 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1760 * optimization: ROUND with a single single-float or double-float argument
1761 is properly inlined when possible.
1762 * optimization: Slightly better code is generated for integer<->float
1763 conversions and for single-float<->double-float conversions on x86-64.
1764 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1765 code for 32-bit and 64-bit rotations on x86-64.
1766 * bug fix: The install script changes the ownership of directories as well
1767 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1768 launchpad bug lp#508485)
1769 * bug fix: TRUNCATE with a single single-float or double-float argument is
1770 properly inlined when possible. (launchpad bug lp#489388)
1771 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1772 no longer causes a compiler error on x86 and ppc.
1773 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1774 always relative to *READTABLE* rather than the passed argument.
1776 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1777 * minor incompatible change: threading support is now enabled by default
1779 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1781 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1782 are now caught and reported just like errors during macroexpansion.
1783 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1784 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1785 * enhancement: ASDF systems can now depends on SB-QUEUE.
1786 * fixes and improvements related to Unicode and external formats:
1787 ** bug fix: error handling and restart usage in the ucs-2 external format
1789 ** there is now an implementation of the ucs-4 external format.
1790 ** the utf-16 and utf-32 external formats are supported.
1791 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1792 in the environment. setenv() and unsetenv() are also provided. (reported by
1793 Fare Rideau; launchpad bug lp#460455)
1794 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1795 loading. This ensures sensible errors for .FASL files from other
1796 implementations on case-insensitive filesystems. (reported by Willem
1797 Broekema; launchpad bug lp#489417)
1798 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1799 Willem Broekema; launchpad bug lp#489698).
1800 * bug fix: some minor code rearrangements to reenable warning-free building
1801 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1802 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1804 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1807 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1808 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1809 * improvement: support O_LARGEFILE access to files larger than 2GB on
1810 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1811 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1812 definitions for methods specializing on the passed class itself.
1813 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1814 definitions for methods specializing on the passed class itself, or on
1816 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1817 about itself during the build (e.g. for M-? in Slime), if this flag is
1818 enabled in customize-target-features.lisp. This will increase the core
1819 size by about 5-6mb, though, so it's mostly interesting to SBCL
1821 * new feature: various GENCGC tuning parameters have been experimentally
1822 documented and exported from SB-EXT. See documentation for details.
1823 * fixes and improvements related to Unicode and external formats:
1824 ** the Unicode character database has been upgraded to the
1825 Unicode 5.2 standard, giving names and properties to a number of new
1826 characters, and providing a few extra characters with case
1828 ** improvement: restarts for providing replacement input/output on coding
1829 errors for fd-stream external formats.
1830 ** improvement: where :<encoding> is a keyword corresponding to an
1831 external format the system supports, it is now possible to specify
1832 (:<encoding> :replacement <character>) as an external format which will
1833 automatically substitute <character> on encoding or decoding errors for
1834 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1836 ** improvement: the file streams underlying the standard streams (such as
1837 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1838 which uses the replacement mechanism to handle encoding errors,
1839 preventing various infinite error chains and unrecoverable I/O
1841 ** minor incompatible change: the utf-8 external format now correctly
1842 refuses to encode Lisp characters in the surrogate range (char-codes
1843 between #xd800 and #xdfff).
1844 ** fix a typo preventing conversion of strings into octet vectors
1845 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1847 ** fix a bug in the octet multibyte handling of decoding errors and the
1848 USE-VALUE restart. (launchpad bug lp#314939)
1849 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1850 restart on fd-stream decoding errors.
1851 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1852 error is near the end of file.
1853 ** fix a double-error case in unibyte octet conversions, when the first
1854 use of USE-VALUE is ignored.
1855 ** fix bugs in handling of undefined code points in unibyte encodings.
1856 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1857 streams after an UNREAD-CHAR.
1858 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1859 object is allocated in a boxed region of dynamic space.
1860 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1861 fork with multiple Lisp threads running is made, instead of going
1862 ahead with unpredictable consequences. (reported by Leslie Polzer)
1863 * bug fix: uses of slot accessors on specialized method parameters within
1864 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1865 error while finalizing the class. This fix may cause classes with slot
1866 accessors to be finalized later than previously. (reported by Lars Rune
1867 Nøstdal; launchpad bug lp#473699)
1868 * bug fix: restore buildability on the MIPS platform. (regression from
1869 1.0.30.38, reported by Samium Gromoff)
1870 * bug fix: inspecting closures is less likely to fail with a type error.
1871 * bug fix: no timer starvation when setting the system clock back.
1872 (launchpad bug lp#460283)
1873 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1874 standard pprint dispatch table as specified by CLHS.
1875 * bug fix: give CLISP a hint about a type declaration to enable it to build
1876 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1878 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1879 (reported by Attila Lendvai; launchpad bug lp#310132)
1880 * bug fix: distinguish in type specifiers between arrays that might be
1881 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1882 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1883 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1884 * bug fix: setting the value of a symbol-macro within a method in the
1885 presence of type declarations works properly again. (reported by Iban
1886 Hatchondo; launchpad bug lp#485019)
1888 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1889 * optimization: faster FIND and POSITION on strings of unknown element type
1890 in high SPEED policies. (thanks to Karol Swietlicki)
1891 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1893 * improvement: better error signalling for bogus parameter specializer names
1894 in DEFMETHOD forms (reported by Pluijzer)
1895 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1897 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1899 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1900 removes previous default initargs (reported by Lars Rune Nøstdal and
1902 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1903 lambda-lists. (reported by Peter Seibel)
1904 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1905 correctly when starting from an executable core without saved runtime
1906 options (reported by Faré Rideau, thanks to Zach Beane)
1907 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1908 an optimization note instead. (reported by Martin Cracauer)
1909 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1910 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1911 new process group if it doesn't need to share stdin with the sbcl
1912 process. (thanks to Leslie Polzer)
1913 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1914 (reported by Stanislaw Halik)
1916 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1917 * improvement: stack allocation is should now be possible in all nested
1918 inlining cases: failure to stack allocate when equivalent code is manually
1919 open coded is now considered a bug.
1920 * improvements related to Unicode:
1921 ** the Unicode character database has been upgraded to the
1922 Unicode 5.1 standard, giving names and properties to a number of new
1923 characters, and providing a few extra characters with case
1925 ** the system now recognizes and produces names for Unicode Hangul
1926 syllable characters.
1927 ** the EBCDIC-US external-format is now supported for octet operations
1928 (as well as for stream operations).
1929 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1930 be used to output toplevel compile-time effects into a separate .CFASL
1932 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1933 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1935 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1937 * optimization: division of floating point numbers by constants uses
1938 multiplication by reciprocal when an exact reciprocal exists.
1939 * optimization: multiplication of single- and double-floats floats by
1940 constant two has been optimized.
1941 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1942 sufficient type information is available. (thanks to Leslie Polzer)
1943 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1944 known structure objects are as efficient as defstruct generated accessors.
1945 * optimization: unused vector creation can now be optimized away.
1946 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1947 * improvement: a STYLE-WARNING is signalled when a generic function
1948 clobbers an earlier FTYPE proclamation.
1949 * improvement: the compiler is able to track the effective type of
1950 generic function across method addition and removal even in the
1951 absence of an explicit DEFGENERIC.
1952 * improvement: DESCRIBE now reports on symbols naming undefined
1953 but assumed or declared function as well.
1954 * improvement: recompilation of systems using SB-GROVEL now works
1955 (thanks to Leslie Polzer)
1956 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1957 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1959 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1960 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1961 well as user defined declaration names.
1962 ** VARIABLE-INFORMATION is now aware of alien variables.
1963 * improvement: improved address space layout on OpenBSD (thanks to Josh
1965 * improvement: pretty-printing of various Lisp forms has been improved
1966 (thanks to Tobias Rittweiler)
1967 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1968 unused were deleted in safe code. (reported by John Fremlin)
1969 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1971 * bug fix: some out-of-line array predicates were missing (reported by
1973 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1975 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1976 (thanks to Larry D'Anna)
1977 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1978 as well. (reported by Josh Elsasser)
1979 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1980 leading to possible attempts to delete the same file twice. See docstring
1981 on DELETE-FILE for details. (reported by John Fremlin)
1982 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1983 designator argument, rather than its truename. (reported by Luis
1985 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1986 information about some array types. (thanks to Luis Oliveira)
1987 * bug fix: moderately complex combinations of inline expansions could
1988 be miscompiled if the result was declared to be dynamic extent.
1989 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1990 form (+ <variable> <integer>) were miscompiled under certain
1992 * bug fix: in some cases no compiler note about failure to stack allocate
1993 was emitted, even if the objects were in fact heap allocated.
1994 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1995 allocation could cause objects users might reasonably expect to
1996 be heap allocated to be stack allocated.
1997 * bug fix: DESCRIBE signalled an error for generic functions under
1998 certain circumstances. (thanks to Leslie Polzer)
1999 * bug fix: Fixed spelling of an error message.
2001 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2002 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2003 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2004 of SB-THREAD:THREAD-ERROR-THREAD.
2005 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2006 * new feature: docstrings for local and anonymous functions are no longer
2007 discarded. (thanks to Leslie Polzer)
2008 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2009 values in other threads.
2010 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2011 about object allocation.
2012 * optimization: division of a real float by a complex float is implemented
2013 with a specialised code sequence.
2014 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2015 keywords is an order of magnitude faster.
2016 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2017 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2018 methods, and similarly for non-standard metaclass classes as long as there
2019 are no methods additional on MAKE-INSTANCE.
2020 * optimization: more efficient type-checks for FIXNUMs when the value
2021 is known to be a signed word on x86 and x86-64.
2022 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2023 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2025 * optimization: compiler is smarter about delegating argument type checks to
2027 * optimization: several character functions are now compiled somewhat more
2028 efficiently. (reported by Lynn Quam)
2029 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2030 * improvement: less unsafe constant folding in floating point arithmetic,
2031 especially for mixed complex/real -float operations.
2032 * optimization: constant double and single floats are stored in native
2033 unboxed format on x86[-64].
2034 * optimization: smarter code for arithmetic operations with constant floats,
2035 complex floats, or integers on x86[-64].
2036 * optimization: smarter code for conjugate/multiplication of float complexes
2037 and abs/negate of floats on x86-64.
2038 * optimization: more efficient complex float and real float operations on
2040 * improvement: complex float division is slightly more stable.
2041 * improvement: DESCRIBE output has been reworked to be easier to read and
2042 contains more pertinent information.
2043 * improvement: failure to provide requested stack allocation compiler notes
2044 provided in all cases (requested stack allocation not happening without a
2045 note being issued is now considered a bug.)
2046 * bug fix: SB-POSIX exports the documented types and functions
2047 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2048 types. (reported by "abhi")
2049 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2050 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2051 (thanks to Paul Khuong)
2052 * bug fix: looping around HANDLER-CASE could silently consume stack space
2053 on each iteration. (reported by "foobar")
2054 * bug fix: better error signalling when calls to functions seeking elements
2055 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2056 (reported by Tobias Rittweiler)
2057 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2058 directory components now works as it used to. (various prolems reported by
2059 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2060 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2061 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2062 * bug fix: bogus undefined variable warnings from fopcompiled references to
2063 global variables. (thanks to Lars Rune Nøstdal)
2064 * bug fix: foreign function names should now appear in backtraces on
2065 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2066 * bug fix: SETF compiler macro documentation strings are not discarded
2068 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2069 (thanks to Alex Plotnick)
2070 * bug fix: SLEEP accepts large integer arguments, truncating them to
2071 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2072 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2073 * bug fix: compiler notes for expensive slot type checks could be emitted
2074 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2076 changes in sbcl-1.0.29 relative to 1.0.28:
2077 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2078 https://bugs.launchpad.net/sbcl
2079 Bugs can be reported directly there, or by sending email to
2080 sbcl-bugs@lists.sourceforge.net
2081 (no subscription required.)
2082 * minor incompatible change: under weak type checking policy integer
2083 types are weakened less aggressively.
2084 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2085 allowed to return, which causes SBCL to quit with exit status 0. Previously
2086 if the function returned with a small integer return value, that value
2087 was accidentally reused as the exit status.
2088 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2089 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2090 :HASH-FUNCTION argument. Refer to user manual for details.
2091 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2093 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2094 microseconds since the Unix epoch on all platforms.
2095 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2096 allows the compiler to safely elide boundedness checks for special
2098 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2099 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2100 efficiency measure for threaded platforms, but also valueable in
2102 * new feature: UNC pathnames are now understood by the system on Windows.
2103 * optimization: the compiler uses a specialized version of FILL when the
2104 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2106 * optimization: accesses to potentially non-simple arrays where element type
2107 is known are 50% faster.
2108 * optimization: compiler now generates faster array typechecking code.
2109 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2111 * optimization: multidimensional array accesses in the absence of type
2112 information regarding array rank are approximately 10% faster due to
2113 open coding of ARRAY-RANK.
2114 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2115 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2117 * optimization: result of call to VECTOR can now be stack allocated.
2118 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2119 as long as the resulting array is one-dimensional and has a known
2120 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2121 length of the list matches the known length of the vector does not
2122 allocate the list as an intermediate step. Ditto for VECTOR and simple
2124 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2125 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2126 known element type, and is known to be simple and one dimensional.
2127 * improvement: SBCL now emits a compiler note where stack allocation was
2128 requested but could not be provided (not in all cases, unfortunately)
2129 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2130 * improvement: pretty-printing loop has been implemented properly. (thanks
2131 to Tobias Rittweiler)
2132 * documentation: CLOS slot typechecing policy has been documented.
2133 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2134 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2135 pointer, leading to memory faults. (thanks to Bart Botta)
2136 * bug fix: better floating point exception handling on x86/OpenBSD.
2137 (thanks to Josh Elsasser)
2138 * bug fix: exit status from QUIT when called under --script was lost
2139 (reported by Hubert Kauker)
2140 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2141 same implementation of FILL to initialize the array, even if a more
2142 efficient one was available (reported by Stas Boukarev, thanks to
2144 * bug fix: potential miscompilation of array stack allocation on x86 and
2145 x86-64. (reported by Time Tossavainen)
2146 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2147 result in their subforms being treated as top level forms. (reported by
2149 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2150 than a machine register could leave garbage in the high bits of the
2151 result register (bug 316325).
2152 * bug fix: disable address space randomization Linux/x86-64 as well,
2153 not just x86-64. (reported by Ken Olum)
2154 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2155 generate incorrect code.
2156 * bug fix: #201; type inference for CONS and ARRAY types could derive
2157 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2158 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2159 could not be assigned to or bound with PROGV. (reported by Lorenz
2161 * bug fix: the value of CL:- in the inspector was the previous expression
2162 evaluated rather than the expression being evaluated.
2163 * bug fix: constants can no longer be locally declared special.
2164 * bug fix: signals delivered to threads started from foreign land (read:
2165 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2166 thread by blocking all signals and resignalling.
2167 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2168 from :INITFORM, if any.
2170 changes in sbcl-1.0.28 relative to 1.0.27:
2171 * a number of bugs in cross-compilation have been fixed, with the ultimate
2172 result that building under (at least) clisp should be much more reliable.
2173 * minor incompatible changes: echo-streams now propagate unread-char to the
2174 underlying input stream, and no longer permit unreading more than one
2176 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2177 frames, allowing for instance more reliable backtraces.
2178 * improvement: the debugger REPL can now reference lexical variables
2179 by name directly for code compiled with (DEBUG 3).
2180 * improvement: errors from malformed declarations now have better source
2181 paths associated with them. (thanks to Tobias Rittweiler)
2182 * optimization: faster local calls on x86/x86-64
2183 * bug fix: some error messages for out-of-bound array indexes confused the
2184 index and the bound. (thanks to Stas Boukarev)
2185 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2187 * bug fix: running regressions tests in shells without OSTYPE set now works.
2188 (reported by Harald Hanche-Olsen)
2189 * bug fix: more robust static space exhaustion signalling from
2190 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2191 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2192 docstring away instead of storing it under names such as (LAMBDA (X)).
2193 (reported by Leslie Polzer)
2194 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2195 (thanks to Ole Arndt for the patch)
2196 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2197 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2198 potentially-invalid effective methods in its cache.
2199 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2200 instances as well (thanks to Paul Khuong)
2201 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2202 SB-POSIX:WAITPID and their C equivalents.
2203 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2205 changes in sbcl-1.0.27 relative to 1.0.26:
2206 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2207 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2208 * improvement: the system either recovers from stack exhaustion or dies
2209 properly as opposed to leaving the user uncertain of whether the handler
2210 trampled on some random memory next to the stack or having to rely on
2211 --lose-on-corruption (which is still a good idea to use in production
2212 because stack exhaustion can happen in signal handlers which will likely
2214 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2215 1.0.25.37, reported by Harald Hanche-Olsen)
2216 * bug fix: work around signal delivery bug in darwin (regression from
2217 1.0.25.44, reported by Sidney Markowitz)
2218 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2220 changes in sbcl-1.0.26 relative to 1.0.25:
2221 * incompatible change: an interruption (be it a function passed to
2222 INTERRUPT-THREAD or a timer function) runs in an environment where
2223 interrupts can be enabled. The interruption can use
2224 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2225 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2226 potentially running out of stack. Keep in mind that in the absence
2227 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2228 acquiring a lock can enable interrupts.
2229 * incompatible change: GC-OFF and GC-ON are removed, as they were
2230 always unsafe. Use WITHOUT-GCING instead.
2231 * new feature: runtime option --disable-ldb
2232 * new feature: runtime option --lose-on-corruption to die at the
2233 slightest hint of possibly non-recoverable errors: running out of
2234 memory, stack, alien stack, binding stack, encountering a memory
2235 fault, etc. In the absence of --lose-on-corruption a warning is
2237 * enhancement: detect binding stack exhaustion
2238 * enhancement: detect alien stack exhaustion on x86/x86-64
2239 * improvement: generally more stable and reliable interrupt handling
2240 * improvement: there is a per thread interruption queue,
2241 interruptions are executed in order of arrival
2242 * improvement: a repeating timer reschedules itself when the it has
2243 finished, but expiration times are spaced equally. If an
2244 expiration time is in the past it will trigger after a short grace
2245 period that may give a chance to other things to run.
2246 * optimization: slightly faster gc on multithreaded builds
2247 * optimization: faster WITHOUT-GCING
2248 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2249 important locks so that the debugger/handler doesn't produce
2250 recursive errors or deadlock.
2251 * bug fix: real-time signals are not used anymore, so no more
2252 hanging when the system wide real-time signal queue gets full.
2253 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2255 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2256 * bug fix: fix random memory faults related to interrupts on alpha
2257 * bug fix: fix random memory faults related to interrupts on sparc
2258 * bug fix: fix deadlocks related to starting threads
2259 * bug fix: fix deadlines on locks on futex platforms
2260 * bug fix: restore errno in signal handlers
2261 * bug fix: fix deadlocks related to hash tables
2262 * bug fix: fix deadlocks in pcl
2264 changes in sbcl-1.0.25 relative to 1.0.24:
2265 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2266 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2267 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2268 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2269 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2270 better name and does not return values so stale on multiprocessor systems.
2271 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2273 * improvement: unithread builds keep track of MUTEX-VALUE.
2274 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2275 stream anymore making it thread safe to have a concurrent reader and
2276 a writer, for instance, in a pipe.
2277 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2278 arguments, making compiler-macros for SETF-functions able to inspect
2279 their constant arguments.
2280 * improvement: COMPILE-FILE reports times with millisecond accuracy
2281 (thanks to Luis Oliveira)
2282 * optimization: CHAR-CODE type derivation has been improved, making
2283 TYPEP elimination on subtypes of CHARACTER work better. (reported
2284 by Tobias Rittweiler, patch by Paul Khuong)
2285 * bug fix: setting alien structure fields of type struct by value now
2286 computes the right offset for the memory copy.
2287 * bug fix: compilation problem involving inlined calls to aliens with
2288 result type VOID. (reported by Ken Olum)
2289 * bug fix: #235a; sequential inline expasion in different policies no
2290 longer reuses the functional from the previous expansion site.
2291 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2292 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2293 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2294 cause an implied type redefinition. Regression from 1.0.21.29.
2295 * bug fix: sign-extension of small signed return values now works with C
2296 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2297 * improvements to the Windows port:
2298 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2299 Westfold, thanks to Rudi Schlatte)
2301 changes in sbcl-1.0.24 relative to 1.0.23:
2302 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2303 vector of a multidimensional SIMPLE-ARRAY.
2304 * new feature: the system now signals a continuable error if standard
2305 readtable modification is attempted. (thanks to Tobias Rittweiler)
2306 * new feature: DIRECTORY has been extended with a non-standard keyword
2307 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2308 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2309 has been robustified and documented better. (thanks to Robert Goldman)
2310 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2311 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2312 * tradeoff: constant FORMAT control strings are now compiled unless
2313 SPACE > SPEED (previously only when SPEED > SPACE.)
2314 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2316 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2318 * bug fix: lexical type declarations are now correctly reported by
2319 SB-CLTL2. (reported by Larry D'Anna)
2320 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2321 using UTF-8 as external format. (thanks to Luis Oliveira)
2322 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2323 are signalled correctly. (thanks to Stas Boukarev)
2324 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2325 designator. (thanks to Tobias Rittweiler)
2326 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2327 designator, and returns T instead of the function. (thanks to
2329 * bug fix: direct superclasses of STANDARD-CLASS and
2330 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2331 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2332 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2333 when no class with the named slot yet exists no longer causes a
2334 compile-time style-warning.
2335 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2336 in safe code. (reported by Didier Verna)
2337 * bug fix: #430; nested structure constructors can stack allocate.
2338 * bug fix: on some 64-bit platforms dynamic space size was truncated
2339 to #xffff0000 bytes. (reported by Benjamin Lambert)
2340 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2341 REPL unusable. (reported by Daniel Herring)
2342 * bug fix: return values of READ-SEQUENCE did not take :START into
2343 account on file streams, regressions since 1.0.12.22. (reported by
2344 Thomas Russ, patch by Paul Khuong)
2345 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2346 method specializer used to confuse permuation vector optimization.
2347 * bug fix: system inserted bogus implicit type declarations for local
2348 special variables in DEFMETHOD bodies.
2349 * bug fix: #354; duplicated frames in backtraces due to
2350 non-tail-call-optimized XEPs to functions with return type NIL
2352 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2353 initializes structure object slots according to DEFSTRUCT initforms,
2354 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2355 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2356 (reported by Bruno Haible and Stephen Wilson)
2357 * bug fix: #395; fill-pointer output streams used now support
2358 element-type BASE-CHAR as well.
2359 * bug fix: compiler error when attempting to derive return value of
2360 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2362 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2364 * bug fix: Mac OS X binaries should now be portable between Leopard
2367 changes in sbcl-1.0.23 relative to 1.0.22:
2368 * enhancement: when disassembling method functions, disassembly
2369 for the associated fast function is also produced.
2370 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2372 * optimization: printing with *PRINT-PRETTY* true is now more
2373 efficient as long as the object being printed doesn't require
2374 special handling by the pretty printer.
2375 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2376 now interact correctly with type declarations.
2377 * partial bug fix: PCL detects infinite recursion during wrapper
2378 validation. (thanks to Attila Lendvai)
2379 * bug fix: #426; nested function calls are inlined properly.
2380 Previously if FOO was an inline function, in calls of the form
2381 (FOO (FOO ...)) the outer call was not inlined.
2382 * bug fix: long long arguments passed in registers to alien
2383 functions on PowerPC Linux and NetBSD are now handled correctly
2384 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2386 changes in sbcl-1.0.22 relative to 1.0.21:
2387 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2388 for the shared object in the current directory, but passes the native
2389 namestring of the designated pathname to the operation system's shared
2390 object loading function as-it.
2391 * minor incompatible change: --disable-debugger toplevel option now takes
2392 effect before processing of initialization files and --eval or --load
2394 * new feature: new commandline argument: --script, which supports
2395 shebang lines. See documentation for details. (based on work by
2397 * new feature: SAVE-LISP-AND-DIE can save current values of
2398 --dynamic-space-size and --control-stack-size in the executable core,
2399 causing it to skip normal runtime option processing. See documentation
2400 for details. (thanks to Zach Beane)
2401 * enhancement: inoccous calls to EVAL or generic functions dispatching
2402 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2403 * enhancement: the system no longer resignals errors from --load and
2404 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2405 associated with the original error to be lost. (thanks to Ariel
2407 * enhancement: :DONT-SAVE keyword argument has been added to
2408 LOAD-SHARED-OBJECT for controlling interaction with
2409 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2410 the effects of an earlier LOAD-SHARED-OBJECT call.
2411 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2412 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2413 provided. (reported by Cedric St-Jean)
2414 * bug fix: circularity handling in the reader did not treat raw
2415 structure slots correctly. (reported by Cedric St-Jean)
2416 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2417 file descriptors when there were none.
2418 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2419 was broken. (reporteed by Willem Broekema)
2420 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2421 pathnames without a directory.
2422 * bug fix: COMPILE-FILE did not warn about undefined variable
2423 references at toplevel, and LOAD of the resulting fasl did
2424 not signal an error.
2425 * bug fix: functions with non-required arguments used to end up with
2426 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2427 * bug fix: redefining a function with non-required arguments didn't
2428 update the system's knowledge about its call signature properly.
2429 * bug fix: fixed #431; incompatible alien record type redefinitions
2430 are detected and handled. (reported by Neil Haven)
2431 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2432 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2434 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2435 after alien stack frames.
2436 * bug fix: strings passed to mk{s,d}temp lacked null termination
2438 changes in sbcl-1.0.21 relative to 1.0.20:
2439 * new feature: the compiler is able to track the effective type of a
2440 generic function across method addition and removal.
2441 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2442 appropriately typed structure slots without locking.
2443 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2444 information like those gathered by TIME using a programming-friendly
2446 * new feature: TIME reports time taken even if the form performs a
2447 non-local transfer of control.
2448 * enhancement: reduced conservativism on GENCGC platforms: on
2449 average 45% less pages pinned (measured from SBCL self build).
2450 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2451 mutate constant symbols or violate declaimed type of the symbol.
2452 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2453 sleeping on the semaphore in heavily contested semaphores.
2454 * bug fix: semaphores and condition variables were not interrupt
2456 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2457 owned by other threads anymore.
2458 * bug fix: FIND on lists called KEY outside the specified
2459 subsequence. (reported by budden)
2460 * bug fix: LOG doesn't use single-float intermediate results when
2461 given mixed integer and double-float arguments, leading to better
2462 precision. (reported by Bob Felts)
2463 * bug fix: LOG with base zero returned values of inconsistent type.
2465 changes in sbcl-1.0.20 relative to 1.0.19:
2466 * minor incompatible change: OPTIMIZE qualities
2467 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2468 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2469 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2470 * documentation: some slot access efficiency guidelines have been
2471 added to the user manual.
2472 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2473 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2474 as ASSOC and MEMEBER.
2475 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2476 to more efficient EQ-comparison versions more often.
2477 * optimization: enhanced derivation of DOLIST iteration variable type
2479 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2481 * optimization: runtime lookup of function definitions can be
2482 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2483 * optimization: compiler is able to derive the return type of
2484 (AREF (THE STRING X) Y) as being CHARACTER.
2485 * optimization: CLRHASH on empty hash-tables no longer does pointless
2486 work. (thanks to Alec Berryman)
2487 * optimization: REPLACE deftransforms don't punt when :START1 or
2489 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2490 no longer emits a code deletion note. (reported by Andrew
2492 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2493 functions with an odd number of &OPTIONAL arguments, a &REST
2494 argument, and one or more &KEY arguments at the call site.
2495 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2496 arguments appeared at call sites as well.
2497 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2498 READ-LINE &co can no longer read from them afterwards. (reported
2500 * bug fix: fixed #427: unused local aliens no longer cause compiler
2501 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2503 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2504 alien-stack leakage. (reported by Andy Hefner)
2505 * bug fix: PROGV signals an error when an attempt to violate declared
2506 type of a variable or bind a constant is made.
2507 * bug fix: SET signals an error when an attempt to violate declared
2508 type of a variable is made.
2509 * bug fix: restart computation during the execution of a restart
2510 test function no longer causes infinite recursion. (reported by
2512 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2513 signals an error. (thanks to Pierre Mai)
2514 * bug fix: EXPORT left symbol unexported in conflict situations.
2515 (thanks to Michael Weber)
2516 * bug fix: correctly handle name conflicts involving CL:NIL.
2517 (thanks to Michael Weber)
2518 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2519 conflicts arising from USEing package with conflicting symbols
2520 correctly. (thanks to Michael Weber)
2522 changes in sbcl-1.0.19 relative to 1.0.18:
2523 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2524 warnings that go otherwise unhandled will be muffled if they are
2525 of the type that's the value of this variable.
2526 * optimization: stack allocation is slightly more efficient on x86
2528 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2529 where a raw slot always is initialized using the initform whose
2530 type is not know sufficiently well a compile-time are now compiled
2531 correctly. (reported by John Morrison)
2532 * bug fix: compiler no longer makes erronous assumptions in the
2533 presence of non-foldable SATISFIES types.
2534 * bug fix: stack analysis missed cleanups of dynamic-extent
2535 arguments in non-let-converted calls to local functions.
2536 * improvements to the Windows port:
2537 ** adjusted address spaces for building on both Win32 and
2538 Win64. (thanks for John Connors)
2539 * fixed some bugs revealed by Paul Dietz' test suite:
2540 ** interval arithmetic during type derivation used inexact integer
2541 to single-float coercions.
2542 ** arithmetic operations involving large integers and single
2543 floats give the same results in compiled and interpreted code.
2544 ** deriving the result type of COERCE no longer signals an error
2545 if the derived type of the second argument is a MEMBER type
2546 containing invalid type specifiers.
2547 ** ADJOIN with constant NIL as second argument works correctly.
2548 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2550 changes in sbcl-1.0.18 relative to 1.0.17:
2551 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2552 profiles only the current thread.
2553 * minor incompatible change: changes to SYMBOL-VALUE of constants
2554 defined with DEFCONSTANT now signal an error.
2555 * enhancement: SB-SPROF now has support for wallclock profiling,
2556 and is also able to profile specific threads. REPORT output
2557 has also additional sorting options.
2558 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2560 * optimization: structure allocation has been improved
2561 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2562 ** out of line constructors are ~10% faster.
2563 ** inline constructors are ~15% faster.
2564 ** inline constructors are capable of dynamic extent allocation
2565 (generally on x86 and x86-64, in some cases on other platforms
2567 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2569 * optimization: file compiler is now able to coalesce non-circular
2570 lists, non-base strings, and bit-vectors. Additionally, constants
2571 are never referenced through SYMBOL-VALUE at runtime.
2572 * optimization: code defining methods on PRINT-OBJECT (and other
2573 generic functions in the COMMON-LISP package) now loads faster.
2574 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2576 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2577 fasl is now deleted. (reported by Attila Lendvai)
2578 * bug fix: READ-LINE always returned NIL for the last line in files.
2579 (reported by Yoshinori Tahara)
2580 * bug fix: more accurate disassembly annotations of foreign function
2581 calls. (thanks to Andy Hefner)
2582 * bug fix: trimming non-simple strings and non-string string
2583 designators when the there is nothing to trim works properly.
2584 (thanks to James Knight)
2585 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2586 (thanks to Travis Cross)
2587 * fixed some bugs revealed by Paul Dietz' test suite:
2588 ** NIL is a valid function name (regression at 1.0.13.38)
2589 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2590 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2591 fill pointers properly (regression at 1.0.12.23)
2592 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2593 displacement indices properly (regression at 1.0.12.23)
2595 changes in sbcl-1.0.17 relative to 1.0.16:
2596 * temporary regression: user code can no longer allocate closure
2597 variable storage on stack, due to bug 419 without explicitly
2598 requesting it. Please consult sbcl-devel for advice if you need to
2599 use this feature in the meanwhile.
2600 * new feature: runtime argument --control-stack-size can be used to
2601 adjust thread default control stack size.
2602 * enhancement: improved TIME output
2603 ** all times are reported using the measured accuracy (milliseconds
2604 for real and GC times, microseconds for everything else.)
2605 ** processor cycle counts on x86 and x86-64.
2606 ** interpreted forms are counted for both evaluator modes.
2607 ** number of lambdas converted by the compiler is reported.
2608 ** CPU percentage report (computed from real and total run time.)
2609 ** more comprehensive run time reporting, using a condenced format
2610 ** interperted form, lambda, and page fault counts are omitted
2612 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2614 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2615 * optimization: two argument forms of LAST are upto ~10% faster
2616 in normal SPEED policies.
2617 * optimization: NCONC no longer needs to heap cons its &REST list
2618 in normal SPEED policies.
2619 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2620 to Sidney Markowitz)
2621 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2622 regression since 1.0.9.1. (thanks to Eric Marsden)
2623 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2624 since 1.0.15.36. (thanks to Paul Khuong)
2625 * bug fix: LAST when always returned the whole list when given a bignum
2626 as the second argument.
2627 * bug fix: dynamic extent allocation of nested lists and vectors
2628 could leak to otherwise accessible parts.
2629 * bug fix: invalid optimization of heap-allocated alien variable
2631 * bug fix: fasl header checking is less vulnerable to different
2632 platform word lengths.
2633 * bug fix: more correct assembler syntax for GNU binutils
2634 2.18.50.0.4 support. (thanks to Marijn Schouten)
2635 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2637 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2638 declarations) successfully. (reported by Attila Lendvai)
2640 changes in sbcl-1.0.16 relative to 1.0.15:
2641 * minor incompatible change: revert the changes to sb-posix's error
2642 signaling added in 1.0.14.
2643 * minor incompatible change: change PROBE-FILE back to returning
2644 NIL whenever we can't get a truename, as was the case before 1.0.14.
2645 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2646 inherits from ERROR instead of just CONDITION.
2647 * new feature: SB-INTROSPECT can provide source locations for instances
2648 as well. (thanks to Tobias Rittweiler)
2649 * optimization: binding special variables now generates smaller code
2650 on threaded platforms.
2651 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2652 and cases where no :TEST is given but the compiler can infer that
2653 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2654 * optimization: better LOGNOT on fixnums.
2655 * optimization: modular arithmetic for a particular requested width
2656 is implemented using a tagged representation unless a better
2657 representation is available.
2658 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2659 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2660 for wellformedness and returns a specialized vector. (reported by
2661 Francois-Rene Rideau)
2662 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2663 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2664 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2665 unscheduling timer at the same time as another timer fires.
2666 * bug fix: don't reschedule timers for dead threads.
2667 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2668 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2669 bogus errors if select() was interrupted.
2670 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2672 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2673 * enhancement: cleaner backtraces for interactive interrupts, as
2674 well as other cases where the interesting frames used to be
2675 obscured by interrupt handling frames.
2676 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2677 now supported, and tracing a whole package using (TRACE "FOO") now
2678 traces SETF-functions as well.
2679 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2680 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2681 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2682 * unreadably printed representation of hash-tables now includes
2684 * bug fix: partially fixed #188: type propagation from assignments
2685 is now more efficient.
2686 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2687 'DOUBLE-FLOAT) are not flushable.
2688 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2689 full address of the object, and none of the tag bits.
2690 * bug fix: readably printing hash-tables now respects other printer
2691 control variables. (reported by Cedric St-Jean)
2692 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2693 keyword with MAKE-HASH-TABLE.
2694 * bug fix: export SB-POSIX:MKSTEMP.
2695 * bug fix: SORT was not interrupt safe.
2696 * bug fix: XREF accounts for the last node of each basic-block as
2698 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2699 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2700 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2701 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2702 create obsolete instances in the case of redefinition or
2703 obsoletion of a superclass. (thanks to Andy Hefner)
2704 * bug fix: Support for the Alpha architecture has been revived; it had
2705 suffered somewhat from lack of maintenance since sbcl-1.0.
2706 * improvements to the Windows port:
2707 ** The system detects the codepage to use at startup, instead of
2708 using the value from the saved core. (thanks to Kei Suzuki)
2710 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2711 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2712 (see documentation for details.)
2713 * revived support for OpenBSD (contributed by Josh Elsasser)
2714 * partially fixed bug #108: ROOM no longer suffers from occasional
2715 (AVER (SAP= CURRENT END)) failures.
2716 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2717 bodies no longer cause a WARNING to be signalled. (reported by
2719 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2720 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2721 the bug in TRUNCATE.) (reported by Michael Weber)
2722 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2723 no samples. (reported by Andy Hefner)
2724 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2725 no longer appear as (NIL ...) frames in backtraces.
2726 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2727 is now actually exported from SB-EXT as documented. (reported by
2729 * bug fix: sb-aclrepl now correctly understands how to inspect
2730 single-floats on 64-bit platforms where single-floats are not boxed.
2731 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2732 yet been finalized. (reported by Levente Meszaros)
2733 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2734 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2735 SBCL-specific optimize qualities.
2737 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2738 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2739 an executable in the search path, and does so in the child
2740 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2741 been removed; it can be found in the CVS history, for somebody who
2742 needs that search behavior (see the manual).
2743 * minor incompatible change: compiler policy re. weakening type
2744 checks has changed: now type checks are weakened only if SAFETY < 2
2746 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2747 unparsing of directory pathnames as files. Analogously,
2748 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2749 filename to parse into a directory pathname.
2750 * enhancement: implicit generic function creation now signals a
2751 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2752 users can bind handlers for and muffle around calls to LOAD.
2753 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2754 to be used (using the default stream external format), and allows
2755 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2756 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2757 strings and vectors whose element-type or simplicity is not fully
2758 known at compile-time.
2759 * optimization: STRING-TRIM and related functions no longer allocate
2760 a new string when no trimming needs to be performed. These functions
2761 are also faster than before when the input string has been declared
2763 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2764 * optimization: READ-LINE is significantly faster for files containing
2766 * optimization: non-open coded uses of character comparison operators
2767 (e.g. char=) no longer cons when called with more than one parameter
2768 on platforms supporting dynamic-extent allocation.
2769 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2770 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2771 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2773 * bug fix: some sequence functions elided bounds checking when
2775 * bug fix: too liberal weakening of union-type checks when SPEED >
2777 * bug fix: more bogus fixnum declarations in ROOM implementation
2780 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2781 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2782 :SYNCHRONIZED argument, which makes the hash-table safe for
2783 concurrent accesses (but not iteration.) See also:
2784 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2785 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2786 * optimization: CONCATENATE on strings is an order of magnitude faster
2787 in code compiled with (> SPEED SPACE).
2788 * optimization: SUBSEQ is ~50% faster on lists.
2789 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2790 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2791 END is smaller then START.
2792 * bug fix: SB-PROFILE will no longer report extra consing for nested
2793 calls to profiled functions.
2794 * bug fix: ROOM implementation had bogus fixnum declarations which
2795 could cause type-errors when calling ROOM on large images.
2796 * bug fix: if file compilation is aborted, the partial fasl is now
2797 deleted, and COMPILE-FILE returns NIL as the primary value.
2798 * bug fix: number of thread safety issues relating to SBCL's internal
2799 hash-table usage have been fixed.
2800 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2801 be returned from its body when the values were being returned
2802 using unknown-values return convection and the W-P-O was wrapped
2803 inside an UNWIND-PROTECT.
2804 * bug fix: sb-posix should now compile again under Windows, enabling
2805 slime to work again.
2807 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2808 * incompatible change: hash-table accessor functions are no longer
2809 automatically protected by locks. Concurrent accesses on the same hash-table
2810 from multiple threads can give inconsistent results or even corrupt the
2811 hash-table completely. Multi-threaded applications should do their own
2812 locking at the correct granularity. In the current implementation it is
2813 still safe to have multiple readers access the same table, but it's not
2814 guaranteed that this property will be maintained in future releases.
2815 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2816 and will signal an error at runtime.
2817 * enhancement: SB-THREAD package now exports a semaphore interface.
2818 * enhancement: CONS can now stack-allocate on x86 and
2819 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2821 * enhancement: nested lists can now be stack allocated on
2822 platforms providing stack allocation support.
2823 * enhancement: dynamic-extent support has been extended to support
2824 cases where there are multiple possible sources for the stack
2826 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2827 if the mutex is uncontested on Linux.
2828 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2829 as specified by the CLHS. (thanks to Tobias Rittweiler)
2830 * bug fix: NaN comparison now works on x86-64.
2831 * bug fix: CLOSE :ABORT T on a stream with pending output now
2833 * bug fix: instances of non-standard metaclasses using standard
2834 instance structure protocol sometimes missed the slot type checks
2836 * bug fix: known functions can be inlined in high-debug code.
2838 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2839 * minor incompatible change: the MSI installer on Windows no longer
2840 associates .lisp and .fasl files with the installed SBCL.
2841 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2842 on Windows. (thanks to Luis Oliviera)
2843 * new feature: SB-CLTL2 contrib module now implements
2844 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2845 * optimization: scavenging weak pointers is now more efficient,
2846 requiring O(1) instead of O(N) per weak pointer to identify
2847 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2848 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2849 method bodies using constant slot-names when the first argument is
2850 a specializer parameter for the method.
2851 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2852 names, when the class of the instance is a direct instance
2853 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2854 as slow as the constant slot-name case.)
2855 * optimization: member type construction is now O(N) instead
2857 * optimization: UNION and NUNION are now O(N+M) for large
2858 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2860 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2861 now more readable in environments like Slime which display it.
2862 (thanks to Tobias C. Rittweiler)
2863 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2864 was able to infer the correct argument type for the object on which
2865 the CAS operation was being performed.
2866 * bug fix: copy propagation interfered with parallel assignment
2867 semantics in local calls. (reported by Paul Khuong)
2868 * bug fix: the signed modular fixnum shift compiled to wrong code on
2869 x86 and x86-64. (spotted by a slight modification to some of
2872 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2873 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2874 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2875 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2877 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2878 and generic function now print the object identity for anonymous
2879 instances. (thanks to Attila Lendvai)
2880 * enhancement: as an extension to MOP, SBCL now supports SETF of
2881 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2882 (thanks to Attila Lendvai)
2883 * enhancement: sb-cover has an alternate annotation mode which puts
2884 the form annotations at the car of the form, instead of annotating
2885 it completely. The benefit of this mode is that it shows better
2886 which forms were instrumented by the compiler.
2887 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2888 by printer control variables. (reported by Dan Corkill)
2889 * bug fix: system leaked memory when delayed output was performed by
2890 the OS in smaller chunks then expected. (thanks to David Smith)
2891 * bug fix: system leaked memory when file streams were not closed
2893 * bug fix: large objects written to slow streams that were modified
2894 after the write could end up with the modified state written to
2895 the underlying file descriptor.
2896 * bug fix: multiple threads operating in parallel on the same stream
2897 could cause buffer-overflows.
2898 * bug fix: source location information is stored correctly
2899 (broken since 1.0.6). This bug would generally show up as the
2900 Slime debugger highlighting the wrong form when the sldb-show-source
2902 * bug fix: Branch forms are again annotated as branches in the sb-cover
2904 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2905 on x86-64. (reported by Gregory Vanuxem)
2906 * bug fix: EQUALP could return wrong results for structures with raw
2907 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2908 word). (reported by Vjacheslav Fyodorov)
2909 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2912 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2913 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2914 atomic compare-and-swap operations on threaded platforms.
2915 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2916 allows assigning a global minimum value to optimization qualities
2917 (overriding proclamations and declarations).
2918 * enhancement: closed over variables can be stack-allocated on x86
2920 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2922 * optimization: slot definition lookup is now O(1). This speeds up
2923 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2924 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2925 * optimization: ASSOC and MEMBER can now be open-coded for all
2926 combinations of keyword arguments when second argument is constant
2927 and SPEED >= SPACE. In other cases a specialized version is
2929 * bug fix: using obsoleted structure instances with TYPEP and
2930 generic functions now signals a sensible error.
2931 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2932 (reported by Kristoffer Kvello)
2933 * bug fix: backtrace construction is now more careful when making
2934 lisp-objects from pointers on the stack, to avoid creating bogus
2935 objects that can be seen by the GC.
2936 * bug fix: defaulting of values in contexts expecting more than 7
2937 variables now works on x86-64. (reported by Christopher Laux)
2938 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2940 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2941 as the property-list of a symbol.
2942 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2943 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2944 situations requested, are once again file-compileable. (reported
2947 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2948 * MOP improvement: support for user-defined subclasses of
2949 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2950 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2951 the expansion of DEFMETHOD, is responsible for generating a form
2952 which creates a list of specializers when evaluated. Additional
2953 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2954 debugging and introspective support.
2955 * minor incompatible change: the (unsupported) spinlock interface
2956 has changed: free spinlock now has the value NIL, and a held spinlock
2957 has the owning thread as its value.
2958 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2959 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2961 * enhancement: name of a socket-stream is now "a socket" instead of
2962 "a constant string".
2963 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2964 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2965 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2966 for generic functions. (Thanks to Tobias C. Rittweiler)
2967 * optimization: bignum printing speed has been improved by 20-40%
2968 (depending on the bignum size.)
2969 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2971 * bug fix: the cache used by the CLOS to store precomputed effective
2972 methods, slot offsets, and constant return values is now thread and
2974 * bug fix: generic function dispatch function updating is now thread
2975 and interrupt safe (in the sense that the known issues have been
2977 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2978 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2979 * bug fix: asdf systems with dependencies to the SB-POSIX or
2980 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2981 * bug fix: interrupt safety of applicable method computation has been
2984 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2985 * new contrib: sb-cover, an experimental code coverage tool, is included
2986 as a contrib module.
2987 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2988 significantly faster.
2989 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2990 produce more efficient code on x86-64 if the compiler can determine
2991 that (+ INDEX <constant>) does not require a bounds check and FOO
2992 has an element type at least 8 bits wide.
2993 * enhancement: a new, experimental synchronous timeout facility is
2994 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2995 * enhancement: when a symbol name conflict error arises, the
2996 conflicting symbols are always printed with a package prefix.
2997 (thanks to Kevin Reid)
2998 * enhancement: stepping is now once again supported on the SPARC and
2999 MIPS platforms. (It is also now more likely to work on CheneyGC
3001 * enhancement: sb-sprof can now also track and report accurate call
3003 * bug fixes: the treatment of non-standard subclasses of
3004 SB-MOP:SPECIALIZER is more correct.
3005 * incompatible change: PURIFY no longer copies the data from the
3006 dynamic space into the static and read-only spaces on platforms
3007 that use the generational garbage collector
3008 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3010 * bug fix: GC race condition occasionally resulting in crashes with
3011 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3013 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3015 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3016 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3017 * bug fix: an asynchronous interrupt could previously leave the
3018 system running with GC inhibited.
3019 * bug fix: a DECLARE form evaluated at top-level now causes an error
3020 rather than silently (or verbosely) returning NIL.
3021 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3022 result in a error being signalled due to source form lookup errors.
3023 (reported by Peter Graves)
3025 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3026 * incompatible change: removed writer methods for host-ent-name,
3027 host-ent-addresses -- changing the values did not update the DNS
3029 * minor incompatible change: changed experimental JOIN-THREAD interface
3030 * documentation: the manual now lists reader and writer methods
3031 in class slot documentation sections. (thanks to Richard M Kreuter)
3032 * documentation: unwinding from asyncronous events has been
3033 documented as unsafe.
3034 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3035 in multithreaded application code.
3036 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3037 platforms. (thanks to James Anderson for the optimization hint)
3038 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3040 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3041 variants no longer cons.
3042 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3043 their NOT- variants no longer cons.
3044 * optimization: EQUAL hash tables no longer use SXHASH for objects
3045 of all data types, but instead use an EQL hash for types for which
3046 EQUAL is the same as EQL.
3047 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3048 are significantly faster.
3049 * optimization: new STRING-OUTPUT-STREAM implementation is much
3050 faster for large outputs and conses 30% less on average.
3051 * enhancement: XREF information is now collected for references made
3052 to global variables using SYMBOL-VALUE and a constant argument.
3053 * enhancement: SIGINT now causes a specific condition
3054 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3055 * bug fix: FILE-POSITION used to signal an error in some cases where
3056 ANSI requires it to return NIL.
3057 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3058 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3059 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3061 * bug fix: bad type declaration in the CLOS implementation has
3062 been fixed. (reported by James Anderson)
3063 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3064 (thanks to Lutz Euler)
3065 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3066 required by the CLHS. (reported by Samium Gromoff)
3067 * bug fix: dead unbound variable references now signal an error.
3068 (reported by Marco Monteiro)
3069 * bug fix: / with an unused value was being deleted in safe code.
3070 (thanks to Marco Monteiro and Kevin Reid)
3071 * bug fix: number of characters that can be written onto a single
3072 line in a file is unlimited.
3073 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3074 been fixed by inhibiting interrupts for when GC is disabled.
3075 * bug fix: some interrupt safety issues with GETHASH, (SETF
3076 GETHASH), CLRHASH and REMHASH have been fixed.
3077 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3078 specifier no longer causes infinite recursion.
3079 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3080 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3081 * bug fix: an &environment argument with the correct variable information
3082 is passed to macros that are expanded during byte compilation.
3083 (reported by Samium Gromoff)
3084 * bug fix: a logic error was causing the hash function for bignums to
3085 have excessive amounts of collisions. (reported by Faré Rideau)
3086 * bug fix: modifying the contents of an array could change the return
3087 value of SXHASH on that array, which is only allowed for strings
3088 and bit vectors. (bug introduced in 0.9.16)
3089 * improvement: the x86-64/darwin port now passes all tests (except
3090 for the debugger tests) but should still be considered
3091 experimental until this is fixed.
3092 * improvement: a style-warning is signaled for CASE (etc) clauses with
3093 duplicate keys. (thanks to Kevin Reid)
3094 * improvement: macos/x86 and macos/x86-64 now use mach exception
3095 handlers for dealing with illegal instructions (for trapping and
3096 error handling) and memory protection violations (for GC).
3098 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3099 * new platform: experimental support for x86-64/darwin (MacOS).
3100 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3101 and getnameinfo sockets functions are used instead of gethostbyaddr
3102 and gethostbyname, on platforms where the newer functions are available.
3103 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3105 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3106 don't print the startup banner, but behave as if --noinform was passed
3107 as a command line argument. (thanks to Kevin Reid)
3108 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3109 * optimization: code using alien values with undeclared types is much faster.
3110 * optimization: the compiler is now able to open code SEARCH in more cases.
3111 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3112 * bug fix: using standardized COMMON-LISP special variables as loop
3113 variables no longer signals bogus package lock violations. (reported
3115 * bug fix: declaring local loop variables to be of a range-limited type
3116 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3117 (reported by Andras Simon)
3118 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3119 bugs remain on x86-64.)
3120 * bug fix: the #= and ## reader macros now interact reasonably with
3121 funcallable instances.
3122 * bug fix: type-checks for function arguments were compiled using the
3123 compiler policy settings of the wrong lexical environment (in 1.0.2
3125 * bug fix: SHADOW accepts characters as string designators, as required
3126 by the spec (thanks to Eric Marsden)
3127 * bug fix: fixed GC safety issues when foreign functions are called with
3128 non-base strings as arguments
3129 * bug fix: more consistent error output for fatal-compiler-warnings, like
3131 * bug fix: functions with proper names were showing up as NIL in
3132 backtraces (reported by Edi Weitz, regression in 1.0.2)
3134 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3135 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3136 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3137 produce more efficient code on the x86 if the compiler can determine
3138 that (+ INDEX <constant>) does not require a bounds check and FOO
3139 has an element type at least 8 bits wide.
3140 * bug fix: references to undefined variables are handled the same way
3141 in toplevel forms as in the normal compiler
3142 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3144 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3145 (thanks to Jon Buller)
3146 * improvement: faster compilation times for complex functions
3147 * improvement: added readlink support to SB-POSIX (thanks to Richard
3150 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3151 * improvement: experimental support for mach exception handling on
3152 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3154 * improvement: support for GBK external format.
3155 (thanks to Chun Tian (binghe))
3156 * improvement: the debugger now displays variables that have been closed
3157 over, in code compiled with (DEBUG 2) or higher
3158 * improvement: support for executable cores on NetBSD (thanks to
3160 * new feature: added a RESTART-FRAME debugger command
3161 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3162 be used to provide an implementation for FILE-POSITION on Gray streams
3163 (thanks to Eric Marsden)
3164 * new feature: add syslog, openlog and closelog support to SB-POSIX
3165 (thanks to Richard Kreuter)
3166 * optimization: the function call overhead in code compiled with
3167 a high DEBUG optimization setting is significantly
3168 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3169 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3170 (thanks to Tony Martinez)
3171 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3172 evaluated once (reported by Kevin Reid)
3173 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3174 works again (thanks to Kilian Sprotte)
3175 * bug fix: an error is signaled for tagbodies with duplicate tags
3176 (thanks to Stephen Wilson)
3177 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3178 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3179 stack frames from alien callbacks.
3180 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3181 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3182 65k pages (thanks to David Woodhouse)
3183 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3185 changes in sbcl-1.0.1 relative to sbcl-1.0:
3186 * new platform: FreeBSD/x86-64, including support for threading.
3187 * new feature: the compiler stores cross-referencing information
3188 about function calls (who-calls), macroexpansion (who-macroexpands)
3189 and special variables (who-binds, who-sets, who-references) for code
3190 compiled with (< SPACE 3). This information is available through the
3191 sb-introspect contrib.
3192 * new feature: users may subclass SEQUENCE, and have instances of
3193 these classes interoperate with standard Common Lisp functions if
3194 a number of methods are defined. (This feature is experimental
3195 and the interface subject to change based on feedback from SBCL
3196 users and the general community)
3197 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3198 x86/x86-64, rather than the previous fixed depth of 8
3199 * improvement: another pthread back-end of mutex "pthread-futex".
3200 * bug fix: non-ascii command-line arguments are processed correctly
3201 (thanks to Yaroslav Kavenchuk)
3202 * bug fix: non-required arguments were not passed correctly when a method
3203 defined using DEFMETHOD was called from a mop-generated method using
3204 CALL-NEXT-METHOD (reported by Pascal Costanza)
3205 * bug fix: recursion is now permitted in accessors through
3206 SLOT-UNBOUND. (reported by Pascal Costanza)
3207 * bug fix: an error was signaled at startup if the HOME environment
3208 variable was defined, but had an empty value (reported by Peter Van Eynde)
3209 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3210 signal a PROGRAM-ERROR, not a BUG.
3211 * bug fix: SB-POSIX:READDIR works when built with large file support.
3212 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3214 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3215 for better automatic indentation support. (thanks to Matt Pillsbury)
3216 * optimization: loading generic functions no longer takes O(n^2) time,
3217 proportional to the amount of methods in the generic function
3218 (reported by Todd Sabin and Jeremy Brown)
3219 * optimization: the FIND and POSITION family of sequence functions
3220 are significantly faster on arrays whose element types have been
3222 * improvements to the Windows port:
3223 ** Intermittent heap corruption problems have been fixed. (thanks
3224 to Alastair Bridgewater)
3225 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3227 ** Lisp is able to unwind foreign exception frames from alien
3228 callbacks. (thanks to Alastair Bridgewater)
3230 changes in sbcl-1.0 relative to sbcl-0.9.18:
3231 * improvement: experimental support for threading on FreeBSD/x86.
3232 (thanks to NIIMI Satoshi)
3233 * improvement: runtime option --dynamic-space-size can be used
3234 to set the size of the dynamic space reserved on startup.
3235 * improvement: floating point modes in effect are now saved in
3236 core, and restored on startup.
3237 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3238 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3239 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3240 threads are not running after *SAVE-HOOKS* have run.
3241 * improvement: writes to CLOS instance slots are type-checked in code
3242 compiled with (SAFETY 3)
3243 * improvement: floating-point exception handling on FreeBSD (thanks to
3245 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3246 (thanks to Zach Beane)
3247 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3249 * improvement: added support for the Shift-JIS external format.
3250 (contributed by NIIMI Satoshi)
3251 * improvement: callbacks are supported on Linux/PPC. (thanks to
3253 * bug fix: compiler bug triggered by a (non-standard) VALUES
3254 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3255 * bug fix: file compiler no longer confuses validated and already
3256 dumped structurres. (reported by Kaersten Poeck)
3257 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3258 fill-pointer signals a type-error as required. (thanks to
3260 * bug fix: disassemly of funcallable instances works.
3261 * bug fix: single stepping on PPC.
3262 * bug fix: fix thread-safety problems in the type system (generally
3263 manifesting as nonsensical errors like "STRING is a bad type specifier
3264 for sequences" or "The value 1 is not of type FIXNUM")
3265 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3266 (reported by Josip Gracin)
3267 * bug fix: an error is signaled for attempts to displace arrays with
3268 incompatible element types (thanks to Mario Mommer)
3269 * bug fix: more correct handling of wide characters in debug info
3270 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3271 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3272 and don't cause extra consing
3273 * optimization: MAP and MAP-INTO are significantly faster on vectors
3274 whose elements types have been declared.
3275 * Improvements to SB-SPROF:
3276 ** Support for allocation profiling
3277 ** Reduced profiling overhead, especially for long profiling runs
3278 * Improvements to the Windows port:
3279 ** floating point exceptions are now reported correctly.
3280 ** stack exhaustion detection works partially.
3281 ** more accurate GET-INTERNAL-REAL-TIME.
3282 ** better RUN-PROGRAM behaviour in case of errors in the child
3284 ** PROBE-FILE now simplifies pathnames correctly.
3285 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3286 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3287 1st 1970 (although time timezone data will be unreliable).
3288 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3290 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3291 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3292 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3294 * bug fix: two potential GC deadlocks affecting threaded builds.
3295 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3296 returns T (reported by Anton Kazennikov)
3297 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3298 with non-variable places
3299 * bug fix: remove a race condition in the setting of
3300 funcallable-instance functions, this should make threaded CLOS
3301 code more stable against memory faults.
3302 * bug fix: corruption of specials when unbinding is interrupted by an
3303 asynchronous unwind (reported by Hannu Koivisto)
3304 * improvement: the debugger will now also display local variables that
3305 are only used once, for code compiled with a DEBUG optimization quality
3308 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3309 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3310 * incompatible change: External-format support for FFI calls. The
3311 SB-ALIEN:C-STRING no longer implies an ASCII
3312 external-format. Instead the string is subject to external-format
3313 conversion. Additionally return values of type SB-ALIEN:C-STRING
3314 are by default of type (SIMPLE-ARRAY CHARACTER), not
3315 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3316 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3317 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3318 * incompatible change: SB-EXT package no longer contains the
3319 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3320 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3322 * incompatible change: the single-stepper is no longer available
3323 on Alpha, Mips and Sparc platforms.
3324 * minor incompatible change: the direct superclasses of
3325 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3326 not (STANDARD-OBJECT FUNCTION). This makes the
3327 class-precedence-lists of GENERIC-FUNCTION and
3328 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3330 * minor incompatible change: the default stream external format on
3331 non-unicode SBCL is no longer detected from the locale, but is always
3333 * new feature: Add a version of evaluator that uses an interpreter instead
3334 of the compiler. EVAL still uses the compiler by default, to switch it
3335 to use the interpreter, set the value of the variable
3336 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3337 * minor incompatible change: the single-stepper REPL has been merged
3338 with the normal debugger (see the "Stepping" heading of the debugger help
3339 for more details). The debugger command STEP will no longer switch
3340 to the single-stepper REPL.
3341 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3342 for a type now works.
3343 * bug fix: loading of default sysinit file works. (thanks to Leonid
3345 * bug fix: better detection of circularities in the file-compiler.
3346 (reported by Marco Monteiro)
3347 * bug fix: the CL pathname functions now work with files that have
3348 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3349 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3350 systems with Unix98 pty semantics.
3351 * bug fix: ASDF-INSTALL will now work with bsd tar.
3352 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3354 * bug fix: timers expiring in dead threads no longer cause a
3355 type-error (reported by Paul "Nonny Mouse").
3356 * bug fix: thanks to more lightweight single-stepper instrumentation,
3357 code compiled with (DEBUG 3) will compile and execute significantly faster,
3358 and will have more accurate type-inferencing than before
3359 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3360 whose bindings are modified
3361 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3362 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3363 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3364 CL:SOFTWARE-VERSION with proper version
3366 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3367 * feature: implemented the READER-METHOD-CLASS and
3368 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3369 as specified by AMOP.
3370 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3372 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3373 (thanks to Lutz Euler)
3374 * optimization: hashing of general arrays and vectors has been
3375 improved. (reported by Any Fingerhut)
3376 * enhancement: SB-INTROSPECT is now able to find definitions of
3377 profiled functions. (thanks to Troels Henriksen)
3378 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3379 as well, allowing compiler-macros for SETF-functions to expand.
3380 * enhancement: step-instrumentation no longer wraps known
3381 single-value functions with multiple-value context, allowing
3382 better type inference.
3383 * fixed bug #337: use of MAKE-METHOD in method combination now works
3384 even in the presence of user-defined method classes. (reported by
3385 Bruno Haible and Pascal Costanza)
3386 * fixed bug #339(c): if there are applicable methods not part of any
3387 long-form method-combination group, call INVALID-METHOD-ERROR.
3388 (reported by Bruno Haible)
3389 * fixed bug #361: the :FUNCTION initarg in the protocol for
3390 initialization of methods can now be used to override
3391 internally-produced optimized functions. (reported by Bruno
3393 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3394 system-provided lambda expression no longer cause warnings about
3395 unbound #:|pv-table| symbols.
3396 * bug fix: improved the handling of type declarations and the
3397 detection of violations for keyword arguments with non-constant
3399 * bug fix: potentially erronous calls to PATHNAME and
3400 MERGE-PATHNAMES were being flushed in some cases.
3401 (reported by Richard Kreuter)
3402 * bug fix: compiled calls to TYPEP were mishandling obsolete
3403 instances. (reported by James Bielman and Attila Lendvai)
3404 * bug fix: format strings with ~> without matching ~< no longer
3405 trigger an AVER, but signal an understandable error instead.
3406 (reported by Antonio Martinez)
3407 * bug fix: specifying an output-file without a pathname-type for
3408 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3409 of input-file instead of "fasl". (reported by Robert Dodier)
3410 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3411 (reported by James Y Knight).
3412 * bug fix: compiler-macros-function did not consider the environment
3413 argument for shadowing by local functions.
3414 * bug fix: compiler-macros expansion was inhibited by local INLINE
3416 * bug fix: inline expansions of known functions were subject to
3417 step-instrumentation in high debug policies, leading to problems
3418 with type-inference.
3419 * bug fix: compiler failed to differentiate between different CONS
3420 types in some cases.
3421 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3422 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3423 * bug fix: #368: incorrect use of expressed vs. upgraded array
3425 * bug fix: #306a: more precise unions of array types.
3426 * thread-safety improvements:
3427 ** CONDITION-WAIT could return early on Linux, if the thread was
3428 interrupted and subsequently continued with SIGCONT.
3429 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3431 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3432 * added support for the ucs-2 external format. (contributed by Ivan
3434 * minor incompatible change: pretty printing of objects of type
3435 (cons symbol) is, in the default pprint-dispatch-table, now
3436 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3438 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3439 called later in a class's lifetime, possibly as late as when the
3440 first instance of the class is created. Previously,
3441 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3442 class became finalizeable.
3443 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3444 for multibyte external-format streams. (thanks to "vbzoli")
3445 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3446 with :ALLOCATION :CLASS inherited from superclasses of the
3448 * fixed bug: anonymous classes can now be created using the :NAME
3449 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3450 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3451 * fixed bug: core-files saved with :EXECUTABLE T can again be
3452 executed when SBCL_HOME isn't set. (reported by James Knight)
3453 * fixed bug: toplevel LOCALLY forms with declarations could
3454 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3455 * fixed bug: printing from several different threads using different
3456 values of *print-case* could cause invalid output, due to
3457 some internal special variables of the printer not being bound
3458 thread-locally (reported by Max Mikhanosha)
3459 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3460 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3461 (reported by Pascal Costanza)
3462 * fixed bug: FINALIZE-INHERITANCE is called from
3463 REINITIALIZE-INSTANCE on classes when the class has previously
3464 been finalized, as required by AMOP.
3465 * minor code generation optimizations:
3466 ** better register allocation in CLOS dispatching functions
3467 ** overflow detection when coercing signed bytes to fixnums on x86-64
3468 ** is now implemented with one IMUL instruction instead of three shifts
3469 ** more efficient bit-vector access on x86 and x86-64
3470 ** more efficient access to raw structure slots on x86 and x86-64
3471 * fixed some bugs revealed by Paul Dietz' test suite:
3472 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3473 return its argument.
3475 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3476 * feature: thread support on Solaris/x86, and experimental thread support
3478 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3480 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3481 default method for SLOT-UNBOUND.
3482 * minor incompatible change: prevent the user from specializing the
3483 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3484 somewhat counter to the intent of the protocol, I (CSR) think, and
3485 additionally it just doesn't work in SBCL as currently
3486 implemented, thanks to optimizations (that are always valid for
3487 the other three SLOT-VALUEish functions, but not for the setter).
3488 * minor incompatible change: the :SB-LDB feature is now enabled by
3489 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3490 the low-level debugger.
3491 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3492 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3493 down to an SB-SYS:FD-STREAM, allowing direct communication in
3494 more cases. Temporary files and pipes are still used as a fallback
3496 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3497 on the non-reentrant C functions localtime(3) and gmtime(3).
3498 * bug fix: global optimization policy was not visible in LOCALLY and
3500 * bug fix: class objects can be used as specializers in methods.
3501 (reported by Pascal Costanza)
3502 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3503 with a type error. (reported by blitz_ on #lisp)
3504 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3505 failed with a type error. (reported by Pascal Bourguignon)
3506 * bug fix: merging pathnames against defaults with :DIRECTORY
3507 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3508 (reported by James Y Knight)
3509 * bug fix: saving large (>2GB) cores on x86-64 now works
3510 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3511 constant index and a (simple-array (signed-byte 32)) array
3512 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3513 error (patch by Robert J. Macomber)
3514 * feature: TIME now displays the amount of run-time spent in GC
3515 * bug fix: The debugger now does a better job of respecting
3516 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3517 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3518 workaround for bug 403.)
3519 * bug fix: floating point exception handling now works on FreeBSD
3520 (thanks to NIIMI Satoshi)
3521 * fixed some bugs revealed by Paul Dietz' test suite:
3522 ** MISC.641: LET-conversion were not supposed to work in late
3524 * improvements to the Win32/x86 port:
3525 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3526 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3528 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3529 * new feature: source path information is generated for macro-expansion
3530 errors for use in IDE's like Slime (thanks to Helmut Eller)
3531 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3532 * bug fix: compiler does not loop forever on an invalid type in
3534 * improvement: compilation of most CLOS applications is significantly
3536 * optimization: added a limited bytecode compiler for simple toplevel
3537 forms, speeding up compilation and FASL loading
3538 * bug fix: the statistical profiler now properly distinguishes anonymous
3541 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3542 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3543 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3544 into subclasses of the finalized class. Now user calls to
3545 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3546 system return before any subclasses are finalized.
3547 * minor incompatible change: The reader no longer ignores errors
3548 regarding non-existent packages in #+ and #- feature tests.
3549 * new feature: command line options --no-sysinit, --no-userinit to
3550 inhibit loading the corresponding init files
3551 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3552 for sending data through UDP sockets (thanks to François-René Rideau)
3553 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3554 error is signalled instead (thanks to François-René Rideau)
3555 * minor incompatible change: Error signalling behaviour of lexical
3556 operations violating package locks has changed slightly. Refer to
3557 documentation on package locks for details.
3558 * enhancement: EVAL can process IF-expressions without resorting to the
3560 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3561 constant-folded properly due to missing out-of-line functions.
3562 (reported by Mika Pihlajamäki)
3563 * bug fix: LISTEN sometimes returned T even in cases where no data was
3564 immediately available from the stream
3565 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3566 were reversed. (reported by Levente Mészáros)
3567 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3568 when given a vector displaced to an adjustable array. (reported
3570 * bug fix: derivation of float boundaries from numbers outside the
3571 appropriate float range (reported by John Wiseman)
3572 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3574 * bug fix: precomputing cache entries for generic functions with
3575 some subclasses of specializers as yet invalid does not attempt to
3576 fill a cache line with a negative offset. (reported by Levente
3578 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3579 allow condition class objects as arguments to DOCUMENTATION and
3580 (SETF DOCUMENTATION); only find and set documentation for
3581 structure names for the STRUCTURE doc-type. (suggested by Gary
3583 * improvements to the Win32/x86 port:
3584 ** (user-homedir-pathname) and default initialization file
3585 locations now know about the user's "Documents and Settings"
3586 directory (thanks to Yaroslav Kavenchuk)
3587 ** run-program is implemented (thanks to Mike Thomas)
3588 ** sockets support (thanks to Timothy Ritchey)
3589 ** better backtrace support (thanks to Alastair Bridgewater)
3590 ** sb-grovel supported
3591 ** asdf-install and sb-posix work somewhat
3592 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3593 * improvements to the Solaris/x86 port:
3594 ** works on Solaris 11/Solaris Express
3595 ** floating-point exception handling support
3596 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3597 * fixed some bugs revealed by Paul Dietz' test suite:
3598 ** REMOVE-METHOD returns its generic function argument even when
3599 the method is not one of the generic functions' methods.
3600 ** objects declared as MEMBER types can be admissible arguments to
3601 structure accessors.
3602 ** printing characters should simply be printed by the FORMAT ~:C
3604 ** compiler failure when compiling functions with hairy constant
3605 defaults for optional parameters.
3606 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3607 function, which is already optimized.
3609 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3610 * new platform: experimental support for SBCL x86/Darwin, including
3611 MacOS X 10.4.5 on Intel.
3612 * new feature: Unicode character names are now known to the system
3613 (through CHAR-NAME and NAME-CHAR).
3614 * new feature: the filesystem location of SBCL's core file is
3615 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3616 * minor incompatible change: the contrib modules SB-POSIX and
3617 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3618 this change is to make it easier to distribute
3619 location-independent binaries.
3620 * bug fix: as implied by AMOP, standardized classes no longer have
3621 slots named by external symbols of public packages. (reported by
3623 * optimization: calling functions via constant symbols -- as in
3624 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3625 via the function object as in (FUNCALL #'FOO).
3626 * optimization: on x86 and x86-64, the calling convention for the
3627 case of dealing with an unknown number of values has been altered
3628 to be friendlier to the prediction heuristics implemented,
3629 particularly with reference to CALL and RET pairing. (thanks to
3630 Alastair Bridgewater)
3631 * optimization: on x86, the code for access to thread-local symbol
3632 values and binding/unbinding of thread-local symbols is smaller.
3633 (thanks to Alastair Bridgewater)
3634 * enhancement: CONSTANTP is now able to determine constantness of
3635 more complex forms, including calls to constant-foldable standardized
3636 functions and some special forms beyond QUOTE.
3637 * fixed bug: occasional GC crashes on Solaris/x86
3638 * optimization: x86-64 supports stack allocation of results of simple
3639 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3640 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3641 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3642 (thanks to James Knight)
3643 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3644 by the standard (thanks to Stephen Compall)
3646 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3647 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3648 be used for bundling the runtime and the core file into one
3649 executable binary. This feature is not currently supported on all SBCL
3650 platforms. (thanks to James Bielman and NIIMI Satoshi)
3651 * new feature: a generational or ephemeral garbage collector is now
3652 the default on the PowerPC platform (both Linux and Darwin). The
3653 old Cheney (stop and copy) collector is a build-time option.
3654 (thanks to Cyrus Harmon, after Raymond Toy)
3655 * minor incompatible change: the method by which SBCL finds its
3656 contributed modules has changed; it no longer relies on symbolic
3657 links from an $SBCL_HOME/systems directory, but searches directly
3658 in the subdirectories of $SBCL_HOME.
3659 * enhancement: the dynamic heap size on the Linux/PPC platform is
3660 markedly larger, even using the older Cheney garbage collector.
3661 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3662 certain complicated string types. (reported by Gary King)
3663 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3664 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3665 * fixed bug: DOCUMENTATION on structures no longer signals an
3666 error if no structure type of the right name exists. (reported by
3668 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3669 applicable non-standard primary or :AROUND method on
3670 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3671 no longer cause unbound variable errors. (reported by Kevin Reid)
3672 * fixed bug: metacircle resolution in cases where methods have slots
3673 added before the slots from STANDARD-METHOD. (reported by Jean
3675 * fixed bug: the Power PC assembly code for calling into lisp
3676 sometimes computed its return address wrongly (depending on the
3677 15th bit of the address, fixed at link time). This used to
3678 manifest itself in a segmentation violation while building PCL.
3679 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3680 many others over the years)
3681 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3682 the stack pointer (treated as a signed integer) is negative.
3683 (thanks to Peter van Eynde)
3685 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3686 * new platform: experimental support for the Windows operating
3687 system has been added. (thanks to Alastair Bridgewater)
3688 * fixed several bugs in and robustified the PPC FFI (including
3689 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3690 * bug fix: allow non-simple string symbol names (reported by Paul
3692 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3694 * bug fix: saving a core corrupted callbacks on x86/x86-64
3695 * bug fix: closed a loophole in metacircularity detection and
3696 grounding in the PCL implementation of CLOS.
3697 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3698 (reported by tomppa on #lisp)
3699 * bug fix: clear the direction flag on Lisp -> C transitions, as
3700 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3701 (reported by Andrej Grozin and Hendrik Maryns)
3702 * optimization: major improvements to GC efficiency on GENCGC platforms
3703 * optimization: faster implementation of EQUAL
3704 * optimization: emit more efficient opcodes for some common
3705 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3706 * optimization: several other minor code-generation improvements on x86-64
3707 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3709 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3710 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3711 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3712 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3713 by ANSI as a generic function, and for consistency (SETF
3714 GENERIC-FUNCTION-NAME) is treated likewise.
3715 * fixed bug #233.b: make constraint propagation notice when a variable
3716 value is changed after it is referenced but before it is used
3717 * fixed bug #296: no more arbitrary behaviour from filenames with
3718 odd characters as --load arguments. (reported by Adam Warner)
3719 * fixed bug #390: :CHARACTER-SET pathname components now work as
3720 expected. (reported by Tim Daly Jr)
3721 * fixed bug #391: complicated :TYPE intersections in slot
3722 definitions no longer cause an error in PCL internals.
3723 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3724 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3725 returning the number of octets which would be written to the
3726 file-stream. (thanks to Robert J. Macomber)
3727 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3728 arguments to the internal stream functions. (thanks to David
3730 * bug fix: stack exhaustion is now handled on the x86/SunOS
3731 platform. (thanks to Daisuke Homma)
3732 * bug fix: more accurate ROOM results on GENCGC platforms
3733 * optimization: improved type inference for arithmetic-for
3734 index variables in LOOP
3735 * optimization: faster floating-point SQRT on x86-64
3736 * fixed some bugs revealed by Paul Dietz' test suite:
3737 ** DOCUMENTATION returns NIL instead of "" for method combinations
3738 that don't have a docstring
3740 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3741 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3742 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3743 therefore are not customizeable by user code (as seems to be at
3744 least permitted and maybe required by AMOP). As a consolation,
3745 however, the SBCL implementation of these functions now calls
3746 REINITIALIZE-INSTANCE as specified by AMOP.
3747 * bug fix: slot-definition documentation is propagated as per ANSI
3748 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3749 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3750 argument, as do eslotd initialization methods. (from Pascal
3751 Costanza's "Closer" project)
3752 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3753 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3755 * bug fix: it is now possible to have more than one subclass of
3756 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3757 (reported by Bruno Haible, Pascal Costanza and others)
3758 * bug fix: the dependent update protocol now works for generic
3759 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3760 and Pascal Costanza)
3761 * bug fix: condition-class instances corresponding to
3762 DEFINE-CONDITION forms are now created eagerly. (reported by
3763 Kalle Olavi Niemitalo on comp.lang.lisp)
3764 * bug fix: floating point printing is more accurate in some
3765 circumstances. (thanks to Simon Alexander)
3766 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3767 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3768 * bug fix: callbacks on OS X now preserve stack-alignment.
3769 (thanks to Cyrus Harmon)
3770 * enhancement: the x86-64 disassembler is much better at
3771 disassembling SSE instructions. (thanks to Lutz Euler)
3772 * enhancement: CHECK-TYPE on a variable now allows type-inference
3773 (thanks to Vincent Arkesteijn)
3774 * optimization: improved performance of EUC-JP external format.
3775 (thanks to NIIMI Satoshi)
3776 * optimization: performance improvements to IO on file streams of
3777 :ELEMENT-TYPE CHARACTER
3778 * optimization: much faster memory allocation on x86-64
3779 * optimization: faster garbage collections (latency and throughput)
3781 * optimization: faster bignum subtraction and division on x86 and x86-64
3782 (thanks to Lutz Euler)
3783 * optimization: more accurate type-inference for loops that use a
3784 floating point index variable or a negative step.
3786 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3787 * bug fix: add a workaround to SBCL looping infinitely at startup on
3788 Linux kernels with apparently buggy implementations of personality().
3789 (thanks to Svein Ove Aas)
3790 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3791 (thanks to David Lichteblau)
3792 * bug fix: local bindings shadow global symbol macros for
3793 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3794 * optimization: non-open coded uses of numeric comparison operators
3795 (e.g. >) no longer cons when called with more than one parameter
3796 on platforms supporting dynamic-extent allocation.
3797 * enhancement: saving cores with foreign code loaded is now supported
3798 on MIPS/Linux in addition to the previously supported platforms.
3799 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3800 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3801 * bug fix: division by zero in sb-sprof when no samples were collected
3802 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3803 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3804 (thanks to Alexander Kjeldaas)
3805 * new feature: ignoring the return values of destructive functions
3806 like NREVERSE signals a compile-time style-warning.
3807 (thanks to Kevin Reid)
3808 * new feature: the alignment of alien structure fields can be
3809 explicitly specified. (thanks to Cyrus Harmon)
3810 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3811 and dump core on SIGQUIT
3813 ** incompatible change: threads do not inherit values of specials
3814 from their parents (see manual)
3815 ** bug fix: threads stacks belonging to dead threads are freed by the
3816 next exiting thread, no need to gc to collect thread stacks anymore
3817 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3818 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3819 ** bug fix: dynamic variable and thread start related gc lossage
3820 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3822 * fixed some bugs revealed by Paul Dietz' test suite:
3823 ** SUBTYPEP is slightly more accurate on heinously complicated
3824 CONS types where some of the members have uncertain (in the
3825 NIL, NIL sense) type relationships to each other.
3827 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3828 no longer purified unless :PURIFY T is explicitly specified.
3829 ** Non-purified cores are significantly smaller than before
3831 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3832 * new feature: timers based on Zach Beane's excellent timer package
3833 * added support for the following external formats: koi8-u,
3834 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3835 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3836 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3837 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3838 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3839 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3840 * incompatible change: a threaded SBCL will no longer revert to
3841 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3842 * bug fix: interrupts are disabled until startup is complete; no
3843 more sigsegvs when receiving a signal to soon
3844 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3846 * bug fix: add a workaround for the memory randomization features in
3847 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3848 workaround will only be in effect on systems with the proc filesystem
3850 * bug fix: printing objects of type HASH-TABLE signals a
3851 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3853 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3854 have been running for over 50 days. (reported by Gilbert Baumann)
3855 * bug fix: the logic for getting names of functions gets less
3856 confused when confronded with alternate-metaclass
3857 funcallable-instances. (reported by Cyrus Harmon)
3858 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3859 consistent, even on internal alternate-metaclass objects.
3860 * bug fix: flush closure information collected by physical
3861 environment analysis prepass before the main pass. (bug reported
3863 * bug fix: compiler pack phase does not modify a hashtable, which is
3864 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3865 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3866 may be expanded. (reported by Alexander <malishev> on c.l.l)
3867 * bug fix: no more style-warnings when compiling code using LAST
3868 under high-SPEED low-SPACE settings. (reported by David Wallin
3870 * fixed some incompatibilities between SBCL's MOP and the MOP
3872 ** the METAOBJECT class is now implemented;
3873 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3874 STANDARD-OBJECT, as required;
3875 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3876 now compatible (as required by VALIDATE-SUPERCLASS); there
3877 remains a consistency requirement over the presence or absence
3878 of the FUNCTION class in the superclass list of finalized
3879 classes; see the manual for more details;
3880 ** the :AROUND method for COMPUTE-SLOTS on
3881 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3882 requested slot ordering.
3884 ** bug fix: parent thread now can be gc'ed even with a live
3886 ** bug fix: binding a special with PROGV to no value is not
3887 the same as that symbol not having been bound (thanks to
3889 ** bug fix: binding specials is thread safe (thanks to
3891 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3892 and SB-SPROF do not die with 'no handler for signal XX in
3893 interrupt_handle_now(..)' anymore
3894 ** bug fix: WITH-TIMEOUT works with multiple running threads
3895 * fixed some bugs revealed by Paul Dietz' test suite:
3896 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3897 the :method-class keyword argument.
3899 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3900 * new port: the Solaris operating system on x86 processors is now
3901 mostly supported, though some rough edges in the environment
3902 remain. (thanks to Daisuke Homma)
3903 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3904 space for its heap. (thanks to Thiemo Seufer)
3905 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3906 closures. (thanks to Thiemo Seufer)
3907 * minor incompatible change: eof selects abort in the debugger.
3908 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3909 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3911 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3912 deprecated, and will go away in a future revision of SBCL.
3913 * minor incompatible change: GC-ON and GC-OFF are no longer
3914 implemented with a counter, it does not matter how many times gc
3915 is switched on or off
3916 * bug fix: discriminating functions for generic function classes
3917 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3918 make invalid assumptions about method precedence order. (reported
3920 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3921 platforms. (thanks to Thiemo Seufer)
3922 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3923 * bug fix: correct pathname printing with printer escaping is on.
3924 (thanks to Kevin Reid)
3925 * bug fix: complex VOP definitions in "user-space" no longer trigger
3926 package locks. (reported by Zach Beane)
3927 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3928 for funcallable-instance functions, and is no different from
3930 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3931 characters in the current readtable. (reported by Nicholas Neuss)
3932 * bug fix: SUBTYPEP on various CONS types returns more a more
3933 accurate acknowledgment of its certainty.
3934 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3935 lists in some cases. This partially fixes bug 384.
3936 * flush all standard streams before prompting in the REPL and the
3938 * bug fix: signal handling and triggering gc do not conflict
3939 directly anymore, in particular a high frequency sb-sprof does
3940 not prevent gc from running
3941 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3942 approximation for timezone and DST information between the
3943 universal time epoch and the smallest negative 32-bit time_t.
3944 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3945 year 1899 so long as the encoded time is non-negative.
3946 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3947 the correct answer for non-constant rotate amounts when performing
3948 an inline 32-bit rotation.
3950 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3951 there is only one thread in the session
3952 ** bug fix: memory leak for streams created in one thread and
3953 written to in another
3954 ** bug fix: lockup when compiled with gcc4
3955 ** bug fix: race that allows the gc to be triggered when gc is
3957 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3958 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3960 ** bug fix: finished threads are gc'ed properly
3961 * fixed some bugs revealed by Paul Dietz' test suite:
3962 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3963 has arguments with a different set of applicable methods from
3964 the orignal arguments.
3965 ** The type error thrown by MAP now has a correct expected-type
3967 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3968 name a compiled function.
3969 ** Three MISC tests where a large bignum was improperly coerced to
3970 a float that couldn't represent that bignum during type
3971 derivation were fixed.
3972 ** SUBTYPEP can now handle types involving the negation of a
3973 list-form FUNCTION type.
3974 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3975 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3976 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3978 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3979 * New feature: Experimental support for bivalent streams: streams
3980 opened with :element-type :default now allow character and binary
3981 (unsigned-byte 8) I/O
3982 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3983 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3985 * bug fix: no more highly sporadic "couldn't check whether ~S is
3986 readable" when reading a stream and an interrupt hits in the middle
3987 of a select system call
3988 * compiler better recognizes complex arrays (reported by Eduardo
3990 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3991 for variables on SBCL built with linkage-tables. (reported by Luis
3993 * various error reporting improvements.
3994 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3995 (Thanks to Thiemo Seufer)
3996 * bug fix: nested reader invokations work correctly
3997 * bug fix: it is possible to have simultaneous references to foreign
3998 code and foreign data with the same name.
4000 ** added x86-64 support
4001 ** incompatible change: the threading api now works with thread
4002 objects instead of thread ids
4003 ** bug fix: threads are protected from signals and interruption when
4004 starting up or going down
4005 ** bug fix: a race where an exiting thread could lose its stack to gc
4006 ** bug fix: don't halt on infinite error in threads if possible
4007 ** fixed numerous gc deadlocks introduced in the pthread merge
4008 ** bug fix: fixed thread safety issues in read and print
4009 ** bug fix: debugger doesn't hang on session lock if interrupted at
4010 an inappropriate moment
4011 ** bug fix: run-program is now thread safe(r)
4012 ** bug fix: inner with-recursive-lock no longer releases the mutex
4013 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4014 * fixed some bugs revealed by Paul Dietz' test suite:
4015 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4016 EXPECTED-TYPE slots filled.
4017 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4019 ** MAKE-CONDITION accepts classes as type-designators.
4020 ** COMPILE may never return NIL.
4021 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4022 range before calling Unix time functions
4024 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4025 * numerous signal handling fixes to increase stability
4026 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4027 * minor incompatible change: we now correctly canonize default
4028 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4029 as per the MOP, rather than the historical (INITARG INITFUNCTION
4030 INITFORM). (reported by Bruno Haible)
4031 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4032 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4033 for more information.
4034 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4035 pathname is a directory pathname.
4036 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4037 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4039 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4040 :METACLASS argument in addition to a class name. (reported by
4041 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4042 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4043 (reported by Bruno Haible; patch from Gerd Moellmann)
4044 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4046 * bug fix: more cleanups to the floating point exception handling on
4047 x86-64 (thanks to James Knight)
4048 * bug fix: the compiler does not try to constant fold calls of
4049 COERCE and BIT-* functions when they return freshly constructed
4050 objects. (reported by Nikodemus Siivola and Paul Dietz)
4051 * optimization: improved the MIPS versions of generic (in the
4052 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4053 * optimization: direct conversion of (unsigned-byte 32) to floats on
4054 the PowerPC platform.
4055 * optimization: structure instances with raw slots now use less
4056 memory, and probably show better memory locality. (thanks to
4058 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4059 are treated as requests for stack allocation on the x86-64,
4060 Alpha-32, PPC and SPARC platforms.
4061 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4062 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4063 (thanks to Tony Martinez)
4065 ** gcing a dead thread can no longer lead to lockups
4066 ** threads block signals until they are set up properly
4067 ** errno is no longer shared by threads
4068 ** interrupt-thread restores the eflags register on x86
4069 ** fixed some lockups due to gc/thread interaction
4070 * fixed some bugs revealed by Paul Dietz' test suite:
4071 ** invalid dotted lists no longer raise a read error when
4072 *READ-SUPPRESS* is T
4073 ** signal an error if a symbol that names a declaration is used
4074 as the name of a type, or vice versa
4075 ** allow using the (declare (typespec var*)) abbreviation for
4076 (declare (type typespec var*)) with all type specifiers
4077 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4078 ** always return NIL from PPRINT-POP when OBJECT is NIL
4079 ** don't signal errors when pretty-printing malformed LABELS,
4080 FLET or MACROLET forms
4081 ** declarations in a DOLIST body are also in scope for the
4083 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4085 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4088 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4089 * fixed cross-compiler leakages that prevented building a 32-bit
4090 target with a 64-bit host compiler.
4091 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4092 opened with :IF-EXISTS :OVERWRITE.
4093 * fixed bug 281: error for an invalid qualifier in a short-form method
4094 combination method is not signalled until the faulty method is called.
4095 * bug fix: iteration variable type inferrer failed to deal with open
4096 intervals. (reported by Alan Shields)
4097 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4098 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4099 or more runtime options were provided to the sbcl binary.
4100 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4101 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4102 * optimization: there's now a fast-path for fixnum arguments in the
4103 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4104 * optimization: the code generated on x86-64 is more compact thanks
4105 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4106 * bug fix: floating-point exception handling now partly works on
4107 x86-64. (Thanks to James Knight)
4108 * improvement to the MIPS backend from Thiemo Seufer: C-style
4109 64-bit long long arguments and return values to alien functions
4111 * fixed some bugs revealed by Paul Dietz' test suite:
4112 ** the type-error signalled from WARN has a filled-in DATUM slot.
4113 ** the type-error required when a stream is not associated with
4114 a file has the stream as its datum.
4115 ** type-errors on single-floats on x86-64 no longer have
4116 :INVALID-OBJECT as the datum
4117 ** the type-errors signalled for invalid function names now have
4118 a correct expected type
4119 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4120 for structures defined with a :TYPE. Documentation strings for
4121 typed structures are no longer immediately discarded
4122 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4123 broadcast streams and synonym streams. FILE-LENGTH now also works
4124 on broadcast streams.
4126 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4127 * incompatible change: the --noprogrammer option, deprecated since
4128 version 0.7.5, has been removed. Please use the equivalent
4129 --disable-debugger option instead.
4130 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4132 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4133 inoperational for a while now) has been completely removed.
4134 * null lexical environments are now printed as #<NULL-LEXENV>,
4135 significantly reducing the amount of clutter in typical backtraces.
4136 * documentation on weak pointers, finalization, and after GC hooks
4137 has been added to the manual.
4138 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4139 as other specialized array types, is much faster. SUBSEQ and
4140 COPY-SEQ on such arrays have also been sped up.
4141 * optimization: EQL is now more efficient when at least other argument
4142 is known to be of type (OR FIXNUM (NOT NUMBER)).
4143 * fixed bug: the runtime is now less vulnerable to changes in the
4144 size of the SBCL object on OS X, and virtual memory is reserved for
4145 all spaces that need to be at a fixed address.
4146 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4147 * fixed bug: finalizers and after GC hooks that cause consing are now
4149 * fixed bug: compiler error messages and summaries are now printed to
4150 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4151 * fixed inference of the upper bound of an iteration variable.
4152 (reported by Rajat Datta).
4153 * fixed bug 211e: calling local functions with duplicated constant
4154 keyword argument no longer causes a bogus style warning about an
4156 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4157 ftype declaration to be disregarded. (reported by Dave Roberts)
4158 * fixed bug 373: caused by erronous compilation of references to alien
4159 variables in the runtime on ppc/darwin.
4160 * fixed bug 376: CONJUGATE type deriver.
4161 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4162 (reported by Baughn on #lisp)
4163 * a cross-compiler bug on non-x86 platforms has been identified and
4164 fixed. (thanks to Bruno Haible)
4165 * improvements to the MIPS runtime code for increased stability.
4166 (thanks to Thiemo Seufer)
4167 * increased the maximimum compact environment size to allow
4168 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4169 * partial workaround for bug 135: don't name the function we're
4170 calling for hairy cases of EVAL, so as not to accumulate one environment
4171 entry per call to EVAL. (reported by Kevin Reid)
4172 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4173 * optimization: type testing for non-vector arrays should be faster.
4174 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4176 * bug fix: setting 31st element of a bit vector to zero did not work
4178 * bug fix: redefining a class definition which failed due to a
4179 previous accessor / function clash now works (but see BUGS entry
4180 #380 for more problems in this area). (thanks to Zach Beane)
4181 * the long form of DEFINE-METHOD-COMBINATION disables method group
4182 checking when given a single method group with pattern *. (thanks
4184 * on x86 compiler supports stack allocation of results of simple
4185 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4186 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4187 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4188 * fixed some bugs related to Unicode integration:
4189 ** the restarts for recovering from input and output encoding
4190 errors only appear when there is in fact such an error to
4192 * fixed some bugs revealed by Paul Dietz' test suite:
4193 ** MISC.549 and similar: late transformation of unsafe type
4194 assertions into derived types caused unexpected code
4196 ** SCALE-FLOAT type deriver is less wrong.
4197 ** type derivers for EXP, LOG and similar functions compute result
4198 types for complex arguments better.
4199 ** (MISC.563) CONJUGATE type deriver works for very restricted
4201 ** out-of-line type testers for character strings are available.
4202 ** EQUAL compiler transform understands specialness of objects
4204 ** accessing double-floats stored on the stack now works on x86-64.
4205 ** debugger internals could sometimes create invalid lispobjs,
4206 resulting in GC crashes.
4207 ** MISC.548: type check weakening can convert required type into
4209 ** initialization forms for bindings are not in scope of free special
4212 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4213 * incompatible change: thread support for non-NPTL systems has
4214 been removed - locking is buggy and unreliable. A threaded
4215 SBCL build will now warn at startup and refuse to create
4216 new threads, unless futex support is detected in the kernel
4217 * incompatible change: the top level REPL now has only an ABORT
4218 restart associated with it, not TOPLEVEL and ABORT as it used to.
4219 TOP and TOPLEVEL are now available as debugger commands for
4220 returning to the top level.
4221 * incompatible change: forms evaluated in the REPL now use the
4222 global optimization policy.
4223 * incompatible change: user- and system-initialization files are
4224 no longer processed with LOAD, but by READ and EVAL; hence the
4225 global optimization policy, startup package, readtable, etc,
4227 * The .fasl file format number has been incremented because of
4228 various incompatible changes.
4229 * internal entry point details and argument counts no longer appear
4230 in backtraces unless explicitly requested by setting
4231 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4232 * built-in and standard functions no longer have names like "top
4233 level local call to FOO".
4234 * fixed bug 32: functions defined in non-null lexical environments
4235 now have more legible printed representation
4236 * fixed bug 33: functions defined in non-null lexical environemnts
4237 are now more amenable to inspection by INSPECT.
4238 * workaround for bug 354: XEPs no longer appear in backtraces unless
4239 explicitly requested.
4240 * fixed bug: receiving the signal which results from attempting to
4241 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4242 SIGBUS on other *BSDs) on architectures where the C stack is also
4243 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4244 to debugger confusion or wild instability. (reported by Cheuksan
4246 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4247 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4248 (reported by Lutz Euler)
4249 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4250 compiled code. (reported by Paul Dietz)
4251 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4252 specialized parameter to a method to something that is not TYPEP
4253 the specializer is now possible.
4254 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4255 face of package deletion.
4256 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4257 pathname. (reported by David Tolpin on c.l.l)
4258 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4259 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4260 STRING-STREAM and FILE-STREAM, respectively.
4261 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4262 than previously; in addition, its test suite is now run on build.
4263 (thanks to Luke Gorrie)
4264 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4265 * optimization: added a immediate representation for single-floats
4267 * fixed some bugs revealed by Paul Dietz' test suite:
4268 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4269 ** attempting to create a package with a colliding nickname causes
4270 correctable errors to be signalled.
4271 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4272 ** several x86-64 backend bugs related to sign-extension of immediate
4275 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4276 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4277 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4279 * fixed loading of multiply forward-referenced layouts.
4280 (thanks to Cheuksan Wang)
4281 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4282 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4283 (see COMPILE-FILE documentation for details of :PRINT option)
4284 * fixed bugs 19 and 317: fixed-format floating point printing is
4285 more accurate. This also fixes a bug reported by Adam Warner
4286 related to the ~@F format directive.
4287 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4289 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4290 dispatch table if the from-char is a dispatch macro character.
4291 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4292 by the wordsize no longer ignore the last word. (reported by Lutz
4294 * fixed bug in type checking of dynamic-extent variables. (reported
4296 * optimization: sequence traversal functions use their freedom to
4297 coerce function designators to functions.
4298 * optimization: code with many calls to CLOS methods specialized on
4299 CLOS classes has had redundant type checks removed.
4300 * optimization: added declarations to speed up operations that access
4301 the internal character database (for example STRING-UPCASE)
4302 * optimization: comparison operations between floats and sufficiently small
4303 fixnums no longer create extra rationals
4304 * fixed some bugs related to Unicode integration:
4305 ** portions of multibyte characters at the end of buffers for
4306 character-based file input are correctly transferred to the
4307 start of the buffer at the next read.
4308 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4309 passing it through to OPEN.
4310 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4311 argument given to internal calls to OPEN.
4312 ** the built-in comment readers (introduced by character sequences
4313 ";" and "#|") are more forgiving to encoding errors; they will
4314 STYLE-WARN and then attempt to resync the stream at a character
4315 boundary. (thanks to Teemu Kalvas)
4316 * fixed some bugs in the x86-64 port:
4317 ** Negative short int return values from c-calls are sign-extended
4319 ** The stack is aligned to 16-bytes for c-calls, as required by
4320 the ABI. (thanks to Cheuksan Wang)
4321 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4322 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4323 for enums. (thanks to Vincent Arkesteijn)
4324 ** Multiple small optimizations and bugfixes for floating point
4326 * fixed some bugs revealed by Paul Dietz' test suite:
4327 ** Space, Tab, Linefeed, Return and Page have the invalid
4328 secondary constituent character trait.
4329 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4331 ** WITH-INPUT-FROM-STRING should only update the index place on
4333 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4334 works more reliably.
4335 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4336 with one-dimensional arrays with fill pointers.
4337 ** TYPE-OF failed on a complex with an integer realpart and a
4339 ** compiler failure during type inference for the code of form
4340 (IF (EQL X (THE ...)) ...) (MISC.535).
4342 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4343 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4344 platform. The port supports 61-bit fixnums, large memory spaces
4345 and reloading shared object files.
4346 * enhancement: saving cores with foreign code loaded is now
4347 supported on ppc/Darwin in addition to the previously supported
4349 * enhancement: the statistical profiler now walks deeper into the
4350 call stack for more meaningful call-graphs and accrued time
4351 reports (x86/x86-64 only). It also now reports time spent in
4353 * enhancement: it is now possible to trace most individual methods
4354 of a generic function in addition to tracing the generic function
4356 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4358 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4359 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4360 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4361 produces an error. (thanks to Vincent Arkesteijn)
4362 * bug fix: NAMESTRING on pathnames with :WILD components in their
4363 directories works correctly. (thanks to Artem V. Andreev)
4364 * fixed bug 125: compiler preserves identity of closures. (reported
4366 * bug fixed: functions with &REST arguments sometimes failed with
4367 "Undefined function" when compiled with (DEBUG 3). (reported by
4369 * bug fix: overflow during compiling of setting element of a bit
4370 vector with constant index and value. (reported by Timmy Douglas)
4371 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4372 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4373 * on x86 compiler partially supports stack allocation of dynamic-extent
4375 * GO and RETURN-FROM do not check the extent of their exit points
4376 when compiled with SAFETY 0.
4377 * fixed some bugs related to Unicode integration:
4378 ** encoding and decoding errors are now much more robustly
4379 handled; it should now be possible to recover even from invalid
4380 input or output to the terminal. (thanks to Teemu Kalvas)
4381 ** provided a first cut at implementing STRING-TO-OCTETS and
4382 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4383 ** altered the SB-MD5 contributed module slightly, changing the
4384 interface just enough for it to be supportable for builds where
4385 lisp characters are not eight bits.
4386 * fixed some bugs revealed by Paul Dietz' test suite:
4387 ** the FORMATTER-generated functions for ~V[ conditionals require
4388 the correct number of arguments.
4389 ** READ-FROM-STRING returns the mandated second value when applied
4390 to displaced strings.
4391 ** the #\Rubout and #\Backspace characters are treated as invalid
4392 constituent characters by the tokenizer.
4394 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4395 * new feature: reloading changed shared object files with
4396 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4397 * new feature: references to foreign variables and functions
4398 can now be compiled and loaded before the corresponding shared
4399 object file is loaded, as long as the foreign definitions are
4400 available at runtime.
4401 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4402 supported. (thanks to Dan Debertin)
4403 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4404 just keywords. (thanks to Vincent Arkesteijn)
4405 * fixed bug #331: structure-class instances corresponding to
4406 DEFSTRUCT forms are now created eagerly.
4407 * fixed bug #345: backtraces from calls to undefined functions work
4408 on x86 as well. Related bug #61 is now also partially fixed on x86
4409 (backtraces from throws to unknown catch tags.)
4410 * bug fix: lambda-list parsing is now stricter vrt. order and number
4411 of lambda-list keywords.
4412 * bug fix: as specified by AMOP, an error is signalled if a
4413 class-option appears multiple times in a DEFCLASS form. (reported
4415 * bug fix: RANDOM can be compiled when the compiler derives the type
4416 of its numeric argument as a disjoint set of small integers.
4417 (reported by Paul Dietz)
4418 * bug fix: starting a core saved with shared objects loaded when
4419 those objects are not available no longer causes threaded SBCL to
4420 hang. (reported by Sean Ross)
4421 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4423 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4424 argument, which must always be NIL. (reported by Kalle Niemitalo)
4425 * bug fix: printing 1.0d+23 no longer results in an error.
4426 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4427 * bug fix: structure slot setters preserve evaluation order. (thanks
4429 * fixed some bugs related to Unicode integration:
4430 ** RUN-PROGRAM can allow its child to take input from a Lisp
4431 stream. (reported by Stefan Scholl)
4432 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4433 locales. (reported by Ken Causey)
4434 * fixed some bugs revealed by Paul Dietz' test suite:
4435 ** INCF, DECF and REMF evaluate their place form as specified in
4437 ** FORMATTER expands ~{ ~} iteration directives with V or #
4438 parameters correctly.
4439 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4440 consequent uses no arguments correctly.
4441 ** the system has a partial understanding of the (COMPLEX RATIO)
4443 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4446 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4447 * new feature: a build-time option (controlled by the :SB-UNICODE
4448 keyword feature, enabled by default) for building the system with
4449 support for the entire 21-bit character space defined by the
4451 * new feature: the system now has rudimentary external-format
4452 support; the primary user-visible change at this time is that
4453 characters with the high bit set (such as lower-case-e-acute) will
4454 print correctly to a terminal in a UTF-8 environment.
4455 * minor incompatible change: BASE-CHAR no longer names a class;
4456 however, CHARACTER continues to do so, as required by ANSI.
4457 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4458 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4459 has been moved to the SB-EXT package (temporarily re-exported from
4461 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4462 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4464 * fixed bug #351: better error-handlind and reporting for malformed
4466 * fixed bug #350: bignum-printing is now more memory-efficient,
4467 allowing printing of very large bignums, eg. (expt 2 10000000).
4468 (reported by Bruno Haible)
4469 * fixed bug #302: better primitive-type selection for intersection
4471 * fixed bug #308: non-graphic characters now all have names, as
4472 required. (reported by Bruno Haible)
4473 * bug fix: redefining a class with different superclasses now correctly
4474 removes it from the direct-subclasses of its previous superclasses.
4475 (reported by David Morse)
4476 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4477 new value now works. (reported by Bruno Haible)
4478 * bug fix: correct canonicalization of multiple non-standard slot
4479 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4480 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4481 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4482 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4483 now exists, an signals an error.
4484 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4485 during macroexpansion for non-iteration variables as well. (reported
4486 by Bruno Haible for CMUCL)
4487 * bug fix: Cyclic structures and unprintable objects in compiler
4488 messages no longer cause errors. (reported by Bruno Haible)
4489 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4490 and READ-FROM-STRING all now return a primary value of NIL if
4491 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4492 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4493 (reported by Bruno Haible for CMUCL)
4494 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4495 do not designate a condition. (reported by Bruno Haible for
4497 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4498 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4499 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4500 permitting resolution in favour of any of the conflicting symbols.
4501 (reported by Bruno Haible for CMUCL)
4502 * bug fix: EQUAL compiler optimizations is less aggressive on
4503 strings which can potentially compare true despite having distinct
4504 specialized array element types.
4505 * bug fix: unit enumerations can be defined without dividing by
4506 zero. (thanks to Vincent Arkesteijn)
4507 * FORMAT compile-time argument count checking has been enhanced.
4508 (report from Bruno Haible for CMUCL)
4509 * a partial workaround for the bug 262: the compiler does not try to
4510 inline-expand a local function doing RETURN-FROM from a deleted
4511 BLOCK. (thanks to Peter Denno for the bug report and to David
4512 Wragg for the simple test case)
4513 * fixed some bugs revealed by Paul Dietz' test suite:
4514 ** RENAME-PACKAGE allows all package designators as new package
4516 ** constraint propagation and lambda variable substitution are
4517 more cautious in dealing with partially deleted code.
4518 ** compiler sometimes lost reoptimization passes.
4519 ** CERROR, given a condition as condition designator, passes its
4520 remaining arguments to the continue format control without
4522 ** Case-altering FORMAT directives work correctly on non-ASCII
4524 ** The REAL type specifier handles bounds outside the floating
4525 point ranges without signalling FLOATING-POINT-OVERFLOW.
4526 ** Functions with IR1-transformations can create intercomponent
4527 references to global functions.
4528 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4530 ** FORMAT ~R treats a nil value for its first parameter correctly.
4532 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4533 * enhancement: saving cores with foreign code loaded is now
4534 supported on x86/NetBSD and sparc/Linux in addition to the previously
4535 supported platforms.
4536 * bug fix: on some platforms repeated installations caused multiple
4537 copies of HTML documentation to be installed -- should not happen
4538 any more. (reported by Stefan Scholl)
4539 * bug fix: parsing self-recursive alien record types multiple times
4540 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4541 original patch by Helmut Eller for CMUCL)
4542 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4543 (thanks to Richard Kreuter)
4544 * bug fix: defining classes whose accessors are methods on existing
4545 generic functions in other (locked) packages no longer signals
4546 bogus package lock violations. (reported by François-René Rideau)
4547 * bug fix: special variables as DEFMETHOD parameters no longer have
4548 associated bogus type declarations. (reported by David Wragg and
4550 * bug fix: read-write consistency on streams of element-type
4551 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4552 * bug fix: redefiniton of the only method of a generic function with
4553 no DEFGENERIC no longer emits a full WARNING. In addition,
4554 redefinition of generic functions with no DEFGENERIC to an
4555 incompatible lambda list now signals an error. (thanks to Zach
4557 * bug fix: DEFGENERIC now works even when there's a function of the
4558 same name in an enclosing lexical environment. (thanks to Zach
4560 * fixed compiler failure, caused by instrumenting code during
4561 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4562 * optimization: added loop analysis and improved register allocation
4563 * fixed some bugs revealed by Paul Dietz' test suite:
4564 ** POSITION on displaced vectors with non-zero displacement
4565 returns the right answer.
4566 ** (SIMPLE-STRING) is a valid type specifier for sequence
4568 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4570 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4571 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4573 ** The justification version of the FORMAT ~< directive treats
4574 non-zero minpad parameter correctly.
4576 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4577 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4578 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4579 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4580 the supported interface.
4581 * new feature: Single-stepping of code compiled with DEBUG 2 or
4582 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4583 * new feature: saving cores with foreign code loaded is now
4584 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4585 Timothy Moore's work for CMUCL)
4586 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4587 parameters to * instead of NIL if no initform is supplied.
4588 (reported by Johan Bockgaard)
4589 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4590 correctly when FUNCALL appears as the car of the form. Note:
4591 despite this FUNCALL forms are not currently subject to
4592 compiler-macro expansion. (port of Raymond Toy's fix for the
4593 same from CMUCL, reported by Johan Bockgaard)
4594 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4595 (thanks for Teemu Kalvas)
4596 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4597 case instead of terminating the iteration (thanks for Julian
4598 Squires, Sean Champ and Raymond Toy)
4599 * bug fix: incorrect expansion of defgeneric that caused a style
4600 warning. (thanks for Zach Beane)
4601 * bug fix: slot accessor effective method computation works properly
4602 for classes with multiple non-standard applicable methods on
4603 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4604 * on x86 compiler supports stack allocation of results of LIST and
4605 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4606 CMUCL implementation by Gerd Moellmann)
4607 * fixed some bugs revealed by Paul Dietz' test suite:
4608 ** FORMAT strings with both the ~<~:;~> form of the justification
4609 directive and pretty-printing directives cause an error.
4611 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4612 * incompatible change: the internal functions
4613 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4614 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4615 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4616 instead of the old functions.
4617 * new feature: on platforms where "dladdr" is available foreign
4618 function names now appear in backtraces. (based on Helmut Eller's
4620 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4621 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4623 * documentation: ASDF manual is now distributed with SBCL.
4624 * bug fix: SBCL can now load its contributed modules with REQUIRE
4625 even if the system-provided entries have been removed from
4626 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4628 * bug fix: backtraces involving undefined functions or assembly
4629 routines are more informative. (thanks to Brian Downing)
4630 * bug fix: mutually referent alien structures now work correctly.
4631 (reported by Rick Taube)
4632 * bug fix: structures defined by WITH-ALIEN can be referred to
4633 within other definitions in the same WITH-ALIEN.
4634 * bug fix: division operators (MOD, TRUNCATE and the like) with
4635 constant zero divisors and integer dividends no longer generate
4637 * bug fix: provide default methods for INPUT-STREAM-P and
4638 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4639 * bug fix: improve the detection and resolution of MOP metacycles
4640 (where effective method computation depends on the generic function
4641 having its effective method computed). (reported by Bruno Haible)
4642 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4643 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4644 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4645 * bug fix: pathnames with relative directory components can be
4646 represented relative to default pathnames.
4647 * optimization: in taking the GCD of bignums, reduce the two bignums
4648 to approximately the same size (using Euclid's algorithm) before
4649 applying the more sophisticated binary GCD. (thanks to Juho
4651 * optimization: COUNT on bitvectors now operates word-at-a-time.
4652 * optimization: ASH with a positive, but not necessarily constant,
4653 (leftwards) shift, when in a modular context, is compiled to a
4655 * fixed some bugs revealed by Paul Dietz' test suite:
4656 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4657 if the corresponding argument is NIL.
4658 ** FORMAT directives accepting a minpad parameter treat negative
4660 ** literal commas as character parameters to FORMAT directives are
4662 ** literal spaces directly after ~<Newline> directives within a
4663 format-logical-block (~:< ~@:>) do not induce :FILL-style
4664 conditional newlines.
4665 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4666 as specified: it no longer includes conditional newlines).
4667 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4669 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4670 :PER-LINE-PREFIX argument does not evaluate to a string.
4672 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4673 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4674 the manual for details; for now, package locks can be disabled by
4675 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4676 if no major problems are found then it is likely that they will be
4677 compiled in unconditionally.
4678 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4679 unsupported operators on all platforms. To load a shared library
4680 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4681 object file, link it into a shared library outside of SBCL and
4682 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4684 * bug workaround: ROOM T and the GC were not working together
4685 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4686 reporting facility aren't preserved. That reporting has been
4687 disabled, so now until and unless someone figures out how to make it
4688 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4689 * minor incompatible change: as threatened around sbcl-0.8.0, the
4690 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4691 The symbols are also exported from SB-PCL for backwards
4692 compatibility, but more so than before SB-PCL should be treated as
4693 an implementation-internal package.
4694 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4696 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4697 It is known as of this release not to work on the Alpha, however.
4698 * fixed bug #167: errors signalled due to illegal syntax in method
4699 bodies are now more legible.
4700 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4701 designators and can hence be used with TYPEP.
4702 * fixed bug #333: CHECK-TYPE now ensures that the type error
4703 signalled, if any, has the right object to be accessed by
4704 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4705 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4706 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4708 * fixed bug #334: programmatic addition of slots using specialized
4709 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4710 and :ALLOCATION :CLASS slots.
4711 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4712 float exponents. (rereported by Peter Seibel)
4713 * fixed a bug: #\Space (and other whitespace characters) are no
4714 longer considered to be macro characters in standard syntax by
4715 GET-MACRO-CHARACTER.
4716 * fixed bug: initialization of condition class metaobjects no longer
4717 causes an instance of the condition to be created. (reported by
4719 * fixed bug: it is now possible to have slots such that
4720 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4721 description is neither :INSTANCE nor :CLASS.
4722 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4723 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4724 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4725 non-standard SLOT-DEFINITION-ALLOCATION values.
4726 * fixed bugs: various race conditions handling exiting threads.
4727 CL-PPCRE's thread torture test now passes.
4728 * fixed arguably-a-bug: GC time proportional to number of threads in
4729 system even when most of them are idle
4730 * optimization: improved performance of BIT and SBIT on bit-vectors.
4731 * .fasl file incompatibility: The fasl file version number has
4732 been incremented because of changes associated with package locks.
4734 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4735 * minor incompatible change: the system no longer provides
4736 optimization hints (conditions which are TYPEP
4737 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4738 mode; these hints are still emitted when higher SPEED optimization
4740 * new contrib module: a sampling profiler (profiling by statistical
4741 sampling, rather than by instrumenting functions) is available as
4742 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4743 * the behaviour of the standard function ED is now customizeable by
4744 third parties through a hook variable: see ED's documentation
4745 string for information on the protocol.
4746 * the compiler no longer emits efficiency notes for (FUNCALL X)
4747 when the type of X is uncertain under default optimization
4749 * fixed bug 276: mutating a binding of a specialized parameter to a
4750 method to something that is not TYPEP the specializer is now
4752 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4753 exhibit the required behaviour on the x86 platform. (thanks to
4754 Peter van Eynde, Eric Marsden and Bruno Haible)
4755 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4756 even for difficult arguments. (reported by Peter Graves)
4757 * fixed bug 141a: the backquote printer now descends quoted
4759 * fixed another bug in backquote printing: no more destructive
4760 modification of the form's list structure. (reported by Brian
4762 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4763 move between its address being taken and the call to
4764 interrupt_thread, fixing a crashing race condition.
4765 * the SB-POSIX contrib implementation has been adjusted so that it
4766 no longer exhibits ridiculously poor performance when constructing
4767 instances corresponding to C structs.
4769 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4770 * minor incompatible change: the sb-grovel contrib now treats C
4771 structures as alien (in the sense of SB-ALIEN) objects rather than
4772 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4773 has implications for memory management of client code
4774 (sb-grovel-returned objects must now be manually managed) and for
4775 type safety (alien objects now have full types).
4776 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4777 used to control emission of compiler diagnostics, rather than the
4778 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4779 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4780 quality should be considered deprecated.
4781 * install.sh now installs the user manual as well
4782 * (not quite a new documentable feature, but worth considering in
4783 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4784 beginnings of a semantically meaningful condition hierarchy is
4785 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4787 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4788 designator as the defaults argument.
4789 * fixed bug: Displaced arrays whose displaced-to array has become
4790 too small now cause ARRAY-DIMENSION to signal an error, providing
4791 for safer bounds-checking. (reported by Bruno Haible)
4792 * fixed bug: DEFCLASS slot definitions with identical :READER and
4793 :WRITER names now signal a reasonable error. (reported by Thomas
4795 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4797 * fixed bug: Invalid slot specification errors now print correctly.
4798 (thanks to Zach Beane)
4799 * fixed bug 320: Shared to local slot value transfers in class
4800 redefinitions now happen corrently from superclasses as
4801 well. (reported by Bruno Haible)
4802 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4804 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4805 improper lists correctly. (reported by Bruno Haible)
4806 * fixed bug 313: source-transform for <fun-name> was erroneously
4807 applied to a call of a value of a variable with name <fun-name>.
4808 (reported by Antonio Menezes Leitao)
4809 * fixed bug 307: The obsolete instance protocol ensures that
4810 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4811 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4812 remove dead unknown-values globs from the middle of the stack.
4813 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4814 easier to resume long computations after using *BREAK-ON-SIGNALS*
4815 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4816 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4817 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4818 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4819 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4820 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4822 * fixed a (fairly theoretical) bug in string printing: if
4823 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4824 does not have array-element-type equal to the most general string
4826 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4827 function name. (thanks to Nikodemus Siivola)
4828 * fixed bug: compile-time format string checker failed on
4829 non-closed ~{. (reported by Thomas F Burdick)
4830 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4831 don't warn on legal loop code involving more than one aggregate
4832 boolean. (thanks to Nikodemus Siivola)
4833 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4834 in keyword position to MAKE-PACKAGE was not being reported as
4836 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4837 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4839 * fixed bugs 280 and 312: the checking for multiple definitions in a
4840 file is less likely to become confused by uses of inline
4842 * fixed bug: the #S reader macro performs the keyword coercion
4843 specified for slot names. (reported by Kalle Niemitalo)
4844 * fixed bug: lambda lists may contain symbols whose names start with
4845 & but are not lambda-list-keywords; their occurrence triggers a
4847 * fixed bug 321: define-method-combination argument lambda lists do
4848 not cause invalid code to be generated when &optional or &aux
4849 variables have default values. (reported by Bruno Haible)
4850 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4851 have CLOS classes; this appears also to have fixed reported
4852 instability in stack exhaustion detection.
4853 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4854 MUFFLE-WARNING when no associated restart is present is now
4856 * optimization: rearranged the expansion of various defining macros
4857 so that each expands into only one top-level form in a
4858 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4860 * optimization: used a previously little-used slot in symbols to
4861 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4863 * fixed some bugs revealed by Paul Dietz' test suite:
4864 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4866 ** Fixed an optimization bug related to inheritance of initforms
4867 from local to shared slots.
4868 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4869 ** CAST optimizer forgot to flush argument derived type.
4870 ** print/read consistency on floats is now orders of magnitude
4871 more likely. (thanks also to Bruno Haible for a similar report
4873 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4874 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4875 for objects of type REAL. Make it so.
4876 ** SXHASH is specified (infelicitously) to respect similarity,
4877 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4878 it so. (thanks to Markus Ziegler)
4879 ** on the Alpha, the compiler succeeds in compiling functions
4880 returning a known number of arguments greater than 63.
4881 ** fixed handling of invalid NIL arguments in keyword position
4883 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4885 ** provided a readably-printable representation for RANDOM-STATE
4887 ** ensured that pathnames, where they have a namestring, always
4888 print using #P"..." syntax.
4890 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4891 * Support for the forthcoming 2.0 version of the NetBSD kernel
4892 running on x86 hardware has been added. (thanks to Perry
4893 E. Metzger most immediately, and others for their past work)
4894 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4895 current release version; SBCL's OpenBSD support had been broken
4896 since about the time of OpenBSD's switch to ELF binary format.)
4897 * [placeholder for DX summary]
4898 ** user code with &REST lists declared dynamic-extent, under high
4899 speed or space and low safety and debug optimization policy.
4900 * The manual has been converted to Texinfo format and the debugger
4901 chapter from the cmucl manual has been added.
4902 * A facility has been added to extract documentation strings from
4903 sbcl and store them as Texinfo-formatted snippets for inclusion in
4904 the manual (via Texinfo's @include directive)
4905 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4906 the test case to Dave Roberts)
4907 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4908 pointers. (reported by Sean Ross)
4909 * bug fix: PROFILE output is printed nicely even for large numerical
4910 values. (thanks to Zach Beane)
4911 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4912 greater than 32 handle EOF correctly.
4913 * bug fix: on X86 an immediate argument of the IMUL instruction is
4914 correctly printed in disassembly. (thanks to Lutz Euler)
4915 * bug fix: class slots in redefined classes preserve their old
4916 values. (thanks to Bruno Haible and Nikodemus Siivola)
4917 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4918 succeeds. (reported by Marco Baringer)
4919 * fixed some bugs revealed by Paul Dietz' test suite:
4920 ** READ-SEQUENCE now works on ECHO-STREAMs.
4921 ** RATIONALIZE works more according to its specification. (thanks
4924 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4925 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4926 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4927 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4928 should matter to you only if you rebind the printer control
4929 variables and then find you want different bindings in the
4930 debugger than in the ordinary execution of your program.)
4931 * The runtime build system has been tweaked to support building
4932 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4933 assembler and linker. (thanks to Nikodemus Siivola)
4934 * Unbound, undefined, undeclared variables now trigger full
4935 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4936 more often programmer error than deliberate exploitation of undefined
4938 * optimization: the hash algorithm for strings has changed to one
4939 that is less vulnerable to spurious collisions. (thanks to Juho
4941 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4942 needless bounds checking. (thanks to Juho Snellman)
4943 * optimization: implemented multiplication as a modular
4944 (UNSIGNED-BYTE 32) operation on the PPC backend.
4945 * fixed some bugs revealed by Paul Dietz' test suite:
4946 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4948 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4949 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4950 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4952 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4954 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4956 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4957 their output stream on EOF from read.
4958 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4959 have been read to end-of-file.
4960 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4962 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4963 description of determination of which consecutive characters
4965 ** Printing the "Space" character with escaping on now yields "#\\ ",
4966 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4967 ** Reading floating-point numbers with *READ-BASE* set to a number
4968 less than 10 works correctly.
4969 ** Reading floating-point numbers with *READ-BASE* set to a number
4970 more than 10 works correctly.
4971 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4972 the readtable currently in effect.
4974 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4975 * minor incompatible change: parsing of namestrings on a physical
4976 (Unix) host has changed; numbers after the final #\. in a
4977 namestring are no longer interpreted as a version field. This is
4978 intented to be largely invisible to the user, except that the
4979 meaning of the namestring "*.*.*" has changed: it now refers to a
4980 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4981 should usually be replaced by
4982 (make-pathname :name :wild :type :wild :version :wild)
4983 with the added benefit that this is more likely to be portable.
4984 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4985 option to OPEN now signals an error if the file being opened
4986 exists; this may have an impact on existing code.
4987 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4988 signals received, on the PowerPC platforms (both Linux and
4989 Darwin). (thanks to Pierre Mai for pointing out the location of
4991 * several fixes on OS X: The system now builds and runs cleanly on
4992 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4993 (thanks to Brian Mastenbrook)
4994 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4995 second-resolution: integer multiples of 1/3600 between -24 and 24.
4996 (thanks to Vincent Arkesteijn)
4997 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4998 type when called with 1 argument; PEEK-CHAR checked type of
4999 PEEK-TYPE only after having read first character from a
5000 stream. (reported by Peter Graves)
5001 * bug fix: the garbage collector now has much better locality
5002 behaviour, and in particular no longer treats all memory as being
5003 exhausted when many small objects point to each other in a deeply
5005 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5006 recognized as being TYPEP their class.
5007 * bug fix: the PUSHNEW documentation string has been corrected.
5008 (thanks to Vincent Arkesteijn)
5009 * bug fix: defaulting of the value for the last of an atypically
5010 large number of multiple values being bound was not being
5011 performed correctly on the Alpha or PPC platforms
5012 * optimization: implemented multiplication as a modular
5013 (UNSIGNED-BYTE 32) operation on the x86 backend.
5014 * optimization: SEARCH on simple-base-strings can now be open-coded.
5015 (see also contrib/compiler-extras.lisp for inspiration for
5016 teaching the compiler about the Boyer-Moore algorithm).
5017 * value, returned by MAX (and MIN) called with several EQUALP, but
5018 not EQL, arguments now does not depend on compiler settings.
5019 * fixed some bugs revealed by Paul Dietz' test suite:
5020 ** in stack analysis liveness information is propagated from
5021 non-local entry points.
5022 ** pathwise CAST removing failed when the CAST node did not start
5024 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5025 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5027 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5028 host is already defined.
5029 ** RENAME-FILE works on streams instead of signalling an internal
5031 ** PEEK-CHAR uses the current readtable when determining whether
5032 or not a character is whitespace.
5033 ** MERGE-PATHNAMES handles the case when the pathname does not
5034 specify a name while the default-pathname specifies a version.
5035 ** Pathnames now stand a better chance of respecting print/read
5037 ** Attempting to use standardized file system operators with a
5038 pathname with invalid :DIRECTORY components signals a
5040 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5042 ** DIRECTORY on logical pathnames is more correct.
5043 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5044 signal a TYPE-ERROR if their argument is not a stream.
5045 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5046 designator argument does not designate a stream.
5047 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5048 examining the synonym.
5049 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5051 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5052 element-type larger than ([UN]SIGNED-BYTE 32).
5054 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5055 * When built with the :SB-FUTEX feature, threaded builds now take
5056 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5057 for faster/more reliable mutex and condition variable support.
5058 * Incompatible change (but one you probably shouldn't have been using
5059 anyway): the interface and code for arbitrating between multiple
5060 threads in the same user session has been redesigned.
5061 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5062 error when called without an explicit environment argument.
5063 (thanks to Nikodemus Siivola)
5064 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5065 confused about their position. (thanks to Adam Warner and Gerd
5067 * bug fix: Pretty printing backquoted forms with unquotations in the
5068 argument list position of various code constructs such as LAMBDA
5069 now works correctly. (reported by Paul Dietz)
5070 * bug fix: Pretty printing unquotations no longer loses all
5071 stream position information.
5072 * optimization: performance of string output streams is now less
5073 poor for multiple small sequence writes.
5074 * optimization: performance of CSUBTYPEP in the presence of complex
5075 expressions involving CONS and NOT many times has been improved.
5076 (reported by Paul Dietz)
5077 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5079 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5080 streams for the REPL, for the debugger, and so on. (thanks to
5082 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5083 * fixed some bugs revealed by Paul Dietz' test suite:
5084 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5085 is ignored if it is too small, rather than propagating through
5086 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5087 ** extremely complex negations of CONS types were not being
5088 sufficiently canonicalized, leading to inconsistencies in
5090 ** VALUES tranformer lost derived type.
5092 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5093 * fixed a bootstrapping bug: the build process no longer assumes
5094 that the various BOOLE-related constants have the same value in
5095 host and target lisps. (noted by Paul Dietz' test suite on an
5096 SBCL binary built from CLISP)
5097 * The system can now be dynamically linked on the MIPS platform,
5098 which enables dynamic loading of foreign code from Lisp. (thanks
5099 to Ralf Baechle for discussions on the MIPS ABI)
5100 * The system now records debugging information for its own source
5101 files in a filesystem-position-independent manner, relative to
5102 the "SYS" logical host.
5103 * fixed a compiler bug: MV-LET convertion did not check references
5104 to the "max args" entry point. (reported by Brian Downing)
5105 * tweaked disassembly notes to be less confident about proclaiming
5106 some instruction as an LRA. (thanks to Brian Downing)
5107 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5108 now each have their own history, command character, and other
5109 characteristics. (thanks to David Lichteblau)
5110 * fixed some bugs revealed by Paul Dietz' test suite:
5111 ** compiler failure in compiling LOGAND expressions including a
5113 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5114 shift greater than 32.
5115 ** FLUSH-DEST did not mark blocks for type check regeneration.
5116 ** HANDLER-CASE failed to accept declarations in handler clauses
5117 in some circumstances.
5119 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5120 * New code in contrib/sb-introspect (still probably not entirely
5121 stable yet) provides some support for smart Lisp development
5122 environments like SLIME.
5123 * The conditions signalled for errors occurring when loading .fasl
5124 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5125 in a way which should help ASDF recover gracefully.
5126 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5127 stuff has been cleaned up. If you code contrib/ stuff, this might
5128 affect you, and you can look at contrib/README, contrib/STANDARDS,
5129 and/or the 0.8.4.27 diff to check.
5130 * In full calls the compiler now does not generate checks for declared
5131 argument types for all arguments.
5132 * various threading fixes
5133 ** and some experimental patches which didn't make it into
5134 the main tree for this release, but which are shipped in
5135 contrib/experimental-thread.patch as a possible fix for some
5136 failures (deadlock, spinning...) in GC-intensive multithreaded
5138 * fixed PPC build problem (source code incompatibility of different
5139 library versions): added offsetof() hackery which attempts to divine
5140 where glibc maintainers put uc_mcontext today
5141 * fixed bug 282: compiler does not trust type assertions while passing
5142 arguments to a full call.
5143 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5144 &OPTIONAL VALUES type parameter.
5145 * fix bug 214: algorithm for noting rejected templates is now more
5146 similar to that of template seletion. (also reported by rydis on
5148 * fixed bug 141b: printing backquoted information readably and prettily
5149 inserts a space where necessary.
5150 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5151 (CHARACTER 10) are now reported as errors, rather than propagated
5152 as unknown types. (reported by piso on #lisp)
5153 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5154 with values NIL and :ERROR. (thanks to Milan Zamazal)
5155 * fixed bug 191c: CLOS now does proper keyword argument checking as
5156 described in CLHS 7.6.5 and 7.6.5.1.
5157 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5158 longer raise an error; further, using a list as a for-as-arithmetic
5159 counter now raises a meaningful error.
5160 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5161 now understood by sequence creation functions such as MAKE-SEQUENCE
5163 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5164 a STRING-INPUT-STREAM.
5165 * compiler enhancement: SIGNUM is now better able to derive the type
5167 * type declarations inside WITH-SLOTS are checked. (reported by
5169 * fixed some bugs revealed by Paul Dietz' test suite:
5170 ** incorrect optimization of TRUNCATE for a positive first
5171 argument and negative second.
5172 ** compiler failure in let-convertion during flushing dead code.
5173 ** compiler failure while deriving type of TRUNCATE on an
5174 interval, containing 0.
5175 ** ASH of a negative bignum by a negative bignum count now returns
5177 ** intersection of CONS types now canonicalizes properly, fixing
5178 inconsistencies in SUBTYPEP.
5180 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5181 * incompatible change: The --disable-debugger command line
5182 option now clobbers the debugger at a more fundamental
5183 level, by redefining #'INVOKE-DEBUGGER instead of by
5184 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5185 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5186 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5187 enter the debugger REPL and then suffer recursive errors
5188 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5189 while under the new system, BREAK in --disable-debugger mode
5190 terminates the system just as an unhandled error would.
5191 * fixed compiler performance when processing loops with a step >1;
5192 * bug fix: DOCUMENTATION now retrieves generic function
5193 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5194 support has been systematized, and now supports the methods
5195 specified by ANSI, along with a default method and a method for
5196 slot documentation. (reported by Nathan Froyd)
5197 * bug fix: effective methods associated with a generic function are
5198 no longer cached over a change of that generic function's method
5199 combination. (reported by Andreas Fuchs)
5200 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5201 names a non-existent directory. (thanks to Andreas Fuchs)
5202 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5203 the PPC platform, lead to stack corruption; this has been fixed.
5204 (reported by Rainer Joswig)
5205 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5206 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5207 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5208 arithmetic in general, is now much more reliable on the PPC
5210 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5211 platform now returns the right answer.
5212 * optimization: restored some effective method precomputation in
5213 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5214 precomputation is now tunable.
5215 * optimization: compiler-internal data structure use has been
5216 reviewed, and changes have been made that should improve the
5217 performance of the compiler by about 20%.
5218 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5219 simple-base-strings and simple-bit-vectors is improved.
5220 * optimization: the optimization of 32-bit logical and arithmetic
5221 functions introduced in version 0.8.3 on the x86 has been
5222 implemented on the mips, ppc and sparc platforms; an
5223 implementation of the same facility, but for 64-bit arithmetic,
5224 has been added for the alpha.
5225 * microoptimization: the compiler is better able to make use of the
5226 x86 LEA instruction for multiplication by constants.
5227 * bug fix: in some situations compiler did not report usage of
5228 generic arithmetic in (SPEED 3) policy.
5229 * bug 145b fix: compiler used wrong type specifier while converting
5230 MEMBER-types to numeric.
5231 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5233 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5234 index argument now works properly on the Alpha platform.
5235 * bug fix: floating point exception treatment on the Alpha platform
5237 * bug fix: FILE-POSITION works much better on string input and
5238 output streams. (thanks to Nikodemus Siivola)
5239 * bug fix: many threading/garbage collection symptoms sorted.
5240 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5241 might be pseudo-atomic.
5242 * internal change: Stopping for GC is now done with signals not
5243 ptrace. GC is now done in whichever thread wanted it, instead of
5245 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5247 * bug fix: result form in DO is not contained in the implicit
5249 * incompatible change: ICR structure is changed; the value part of
5250 CONTINUATION is now called LVAR; corresponding functions are
5251 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5252 * added type deriver for ISQRT (thanks to Robert E. Brown).
5253 * bug fix: better support for loading from the command line when an
5254 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5256 * fixed some bugs revealed by Paul Dietz' test suite:
5257 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5258 ** ROUND and FROUND now give the right answer when given very
5259 small float arguments.
5260 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5262 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5263 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5264 ** LCM should return a non-negative integer.
5265 ** PARSE-INTEGER returned the index of a terminator instead of the
5266 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5267 ** PARSE-INTEGER returned an incorrect index being applied to a
5269 ** LCM with two arguments of 0 returns 0 rather than signalling
5271 ** unsigned addition of a 32-bit constant with the high bit set no
5272 longer causes an internal compiler error on the x86.
5273 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5274 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5275 with negative last argument.
5276 ** byte specifiers with zero size and position no longer cause
5277 an error during type derivation.
5278 ** bignum multiplication on the Alpha platform now returns the
5280 * porting: The system now builds on SuSE AMD64, although it still
5281 generates a 32-bit binary.
5282 * .fasl file incompatibility: The fasl file version number has
5283 been incremented (because of the changes to internal compiler
5284 data structures referred to above).
5286 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5287 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5288 more accurately, on the Darwin kernel running on PowerPC hardware.
5289 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5290 * Compiler code deletion notes now signal a condition of type
5291 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5292 an associated MUFFLE-WARNING restart.
5293 * The compiler now performs limited argument count validation of
5294 constant format strings in FORMAT, and where appropriate in ERROR,
5295 CERROR and WARN. (thanks to Gerd Moellmann)
5296 * New ASDF-INSTALL contrib can be used for automatic download and
5297 installation of third-party Lisp code from CCLAN or other sites
5299 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5300 which forces another thread to execute a function supplied by the
5302 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5303 now accept and act upon their :ELEMENT-TYPE keyword argument.
5304 (reported by Martin Atzmueller, Edi Weitz)
5305 * bug fix: FILE-POSITION now accepts position designators up to
5306 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5307 is the greater. (thanks to Patrik Nordebo)
5308 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5309 Kalle Olavi Niemitalo)
5310 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5311 printable. (reported by Eric Marsden)
5312 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5313 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5314 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5315 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5316 (thanks to Stig Sandoe)
5317 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5318 UNREAD-CHAR now correctly includes the unread character in the
5319 target sequence. (thanks to Gerd Moellmann)
5320 * bug fix in threaded builds: the system can now be suspended and
5321 resumed by shell job control with minimal disruption.
5322 * bug fixes in times and timezones >2038AD
5323 * better handling of "where is GNU make?" problem in build scripts
5324 (thanks to Nikodemus Siivola)
5325 * new optimization: inside a named function any reference to a
5326 function with the same name is considered to be a self-reference;
5327 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5328 optimization quality.
5329 * new optimization on x86: logical functions and + now have
5330 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5331 used when the result is truncated to 32 bits.
5332 * VALUES declaration is partially enabled.
5333 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5334 * fixed some bugs revealed by Paul Dietz' test suite:
5335 ** The system now obeys the constraint imposed by
5336 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5337 types form a lattice under type intersection.
5338 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5339 ** ASSOC now ignores NIL elements in an alist.
5340 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5341 and (1+ MOST-POSITIVE-FIXNUM) answers.
5342 ** The addition of a method with invalid qualifiers to a generic
5343 function does not cause an error to be signalled immediately;
5344 a warning is signalled, and the error is generated only on
5345 calling the generic function.
5346 * changed .fasl file version number, in part to add type codes for
5347 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5348 obscure ANSI requirements
5350 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5351 * fixed bug 148: failure to inline-expand a local function left
5352 garbage, confusing the compiler.
5353 * fixed bugs 3cd: structure slot readers perform type check if the
5354 slot can have an invalid value (i.e. it is either not initialized
5355 or can be written with a less specific slot writer).
5356 * bug fix: the compiler now traps array references to elements off
5357 the end of an array; previously, the bounds checking in some
5358 circumstances could go off-by-one.
5359 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5361 * type declarations for array element types now obey the description
5362 on the CLHS page "Declaration TYPE", as per discussions on
5363 sbcl-help around 2003-05-08. This means that a declaration
5364 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5365 declaration, all references to BAR will be asserted or assumed
5366 (with THE, so dependent on compiler policy) to involve objects of
5367 type FOO. Note that no such declaration is implied in
5368 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5369 * declared types of functions from the "Conditions"
5370 chapter. (reported by Paul Dietz)
5371 * bug fix: CERROR accepts a function as its first argument.
5372 * bug fix: NTH an NTHCDR accept a bignum as index
5373 arguments. (reported by Adam Warner)
5374 * optimization: character compare routines now optimize comparing
5375 against a constant character. (reported by Gilbert Baumann)
5376 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5377 argument now works properly on the MIPS platform.
5378 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5379 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5380 declared to have a functional type, does not cause an error
5382 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5383 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5384 * fixed bug: if last continuation of a deleted block has a
5385 destination, this destination should be deleted too. (reported by
5387 * fixed a bug in the bootstrap process: the host compiler's values
5388 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5389 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5390 test case from Patrik Nordebo)
5391 * improved the ability of the disassembler on the PPC platform to
5392 provide helpful disassembly notes.
5393 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5394 the class in more cases than previously.
5395 * bug fix: FILE-POSITION now understands :START and :END for
5396 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5397 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5398 8) data. (thanks to David Lichteblau)
5399 * bug fix: it is possible to add a method to a generic function
5400 without lambda list.
5401 * bug fix: reader failed to signal END-OF-FILE inside an
5402 object representation. (reported by Nikodemus Siivola)
5403 * fixed some bugs revealed by Paul Dietz' test suite:
5404 ** LAST and [N]BUTLAST should accept a bignum.
5405 ** condition slot accessors are methods.
5406 ** (VECTOR NIL) is a subtype of STRING.
5408 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5409 * minor incompatible change: some nonsensical specialized lambda
5410 lists (used in DEFMETHOD) which were previously ignored now signal
5412 * minor incompatible change: the system is now aware of the types of
5413 variables in the COMMON-LISP package, and will signal errors for
5414 most violations of these type constraints (where previously they
5415 were silently accepted).
5416 * minor incompatible change: COMPILE-FILE now uses the freedom
5417 afforded (ANSI 3.2.2.3) to use derived function types for
5418 functions defined in the same file. This also permits the system
5419 to warn on static type mismatches and function
5420 redefinition. (Currently it does not work with high DEBUG level.)
5421 * minor incompatible change: VALUES declaration is disabled.
5422 * When issuing notes, the compiler now signals a condition of type
5423 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5424 restart for use in user handlers. It is expected that the
5425 COMPILER-NOTE condition will eventually become a condition
5426 supertype to a hierarchy of note types, which will then be
5427 handleable in a similar fashion. However, at the moment, no such
5428 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5429 but it's an implementation detail, not a classification for the
5431 * Changes in type checking closed the following bugs:
5432 ** type checking of unused values (192b, 194d, 203);
5433 ** template selection based on unsafe type assertions (192c, 236);
5434 ** type checking in branches (194bc).
5435 * A short form of VALUES type specifier has ANSI meaning (it has
5436 increased the number of situations when SBCL cannot perform type
5438 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5439 keywords or constants is permissible.
5440 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5441 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5442 classes. (thanks to Antonio Martinez)
5443 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5444 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5445 argument to a pretty-print stream. Instead, it leaves any such
5446 operations to DESCRIBE-OBJECT methods.
5447 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5449 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5450 lambda lists. (thanks to David Lichteblau)
5451 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5452 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5453 (thanks to Gerd Moellmann)
5454 * fixed bug 246: increased compilation speed of long
5455 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5457 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5459 * DEFCONSTANT now throws a condition of type
5460 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5461 constant to a non-EQL value; CONTINUE and ABORT restarts
5462 respectively change and preserve the value.
5463 * fixed bug 63: The code walker, part of the implementation of CLOS,
5464 is now better at handling symbol macros.
5465 * bug fix: There is no longer an internal implementation type named
5466 CL:LENGTH. (reported by Raymond Toy)
5467 * bug fix: In macro-like defining macros/special operators the
5468 implicit block does not enclose the lambda list.
5469 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5470 enclosed in parentheses) are not suitable as type specifiers, and
5471 their use properly signals an error now.
5472 * bug fix: An argument count mismatch for a type specifier in code
5473 being compiled no longer causes an unhandled error at compile
5474 time, but signals a compile-time warning.
5475 * fixed simple vector readable printing
5476 * bug fix: DESCRIBE takes more care over whether the class
5477 precedence list slot of a class is bound before accessing it.
5478 (reported by Markus Krummenacker)
5479 * bug fix: FORMATTER can successfully compile pretty-printer format
5480 strings which use variants of the ~* directive inside.
5481 * bug fix: SEARCH now applies its TEST predicate to the elements of
5482 the arguments in the correct order. (thanks to Wolfhard Buss)
5483 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5484 in type inference. (thanks to Robert E. Brown)
5485 * bug fix: Reading in symbols with an explicit package name of ""
5486 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5487 * fixed some bugs revealed by Paul Dietz' test suite:
5488 ** NIL is now allowed as a structure slot name.
5489 ** Arbitrary numbers, not just REALs, are allowed in certain
5490 circumstances in LOOP for-as-arithmetic clauses.
5491 ** Multiple class redefinitions before slot access no longer
5492 causes a type error.
5493 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5494 association between the name and a class.
5495 ** Generic functions with non-standard method-combination and over
5496 five methods all of which return constants no longer return NIL
5497 after the first few invocations. (thanks to Gerd Moellmann)
5498 ** CALL-NEXT-METHOD with no arguments now passes the original
5499 values of the arguments, even in the presence of assignment.
5500 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5502 ** DISASSEMBLE works with closures and funcallable instances.
5503 ** ADD-METHOD now returns the generic function, not the new method.
5504 ** FIND-METHOD signals an error if the lengths of the specializers
5505 is incompatible with the generic function, even if the ERRORP
5507 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5508 which its argument is a member.
5509 ** DEFCLASS only redefines the class named by its class-name
5510 argument if that name is the proper name of the class;
5511 otherwise, it creates a new class.
5512 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5513 of the UNBOUND-SLOT condition to the name of the slot.
5514 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5515 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5516 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5517 SLOT-MAKUNBOUND in the specified fashion.
5519 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5520 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5521 cross-compilation host. As a consequence, we can now bootstrap our
5522 way up to SBCL starting with a bare gcc toolchain and human-readable
5523 source code (first the source to CLISP, then the source to SBCL).
5524 * A contributed module containing a partial implementation of the
5525 simple-streams interface has been included. (thanks to Rudi
5527 * A contributed module implementing the RFC1321 Message Digest
5528 Algorithm, known as MD5, has been included.
5529 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5530 no longer has any effect, as the code controlled by this feature
5531 has been deleted. (As far as we know, no-one has ever built using
5532 this feature, and its semantics were confused in any case).
5533 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5534 work on conditions (as required by the ANSI specification),
5535 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5536 expected behaviour on conditions. Users should note, however,
5537 that such behaviour is not required by the ANSI specification,
5538 and so use of this behaviour may render their code unportable.
5539 * fixed some bugs revealed by Paul Dietz' test suite:
5540 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5542 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5543 ** SXHASH on condition objects no longer returns NIL.
5544 ** :ALLOCATION :CLASS slots are better treated; their values are
5545 updated on class redefinition, and initforms inherited from
5546 superclasses are applied.
5547 ** REMOVE-METHOD returns its generic function argument even when
5548 no method was removed.
5549 ** SHARED-INITIALIZE now initializes the values of the requested
5550 slots, including those with :ALLOCATION :CLASS.
5551 ** ALLOCATE-INSTANCE now works on structure classes defined via
5552 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5554 ** SLOT-EXISTS-P now works on conditions, as well as structures
5556 ** MAKE-LOAD-FORM now has the required methods on
5557 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5558 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5559 keyword, and now implements the SLOT-NAMES argument.
5560 ** methods with &OPTIONAL arguments no longer allow too many
5561 arguments to be passed in the call without error.
5562 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5563 option is consistent with the required arguments of the generic
5564 function lambda list.
5565 * bug fix: REQUIRE accepts a string designator. (Thanks to
5567 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5568 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5569 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5570 * bug fix: The compiler now checks for duplicated variables in macro
5572 * bug fix: SETQ on globals returns the correct value.
5573 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5574 not a COMPILER-ERROR (followed by some other strange error on
5575 choosing the CONTINUE restart).
5576 * bug fix: make.sh and friends are now more consistent in the way that
5577 they look for GNU "make".
5579 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5580 * experimental native threads support (on x86 Linux >=2.4 only).
5581 This is not compiled in by default: you need to add :SB-THREAD to
5582 the target features. See the "Beyond ANSI" chapter of the manual
5584 * fix for longstanding nonANSIism: The old distinction between
5585 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5586 The return value from CL:FIND-CLASS is now a CLOS class, and
5587 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5588 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5589 * An interface to the MetaObject Protocol, as described in Kiczales,
5590 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5591 MIT Press, 1991, is available from the SB-MOP package.
5592 * incompatible change: the SB-PCL package should now be considered
5593 a private implementation detail, and no longer a semi-private MOP
5595 * minor incompatible change: due to rearrangement for threads, the
5596 control stack and binding stack are now allocated at arbitrary
5597 addresses instead of being hardcoded per-port. Users affected by
5598 this probably have to be doing advanced things with shared
5599 libraries, and will know who they are.
5600 * minor incompatible change: Previously, all --eval forms used were
5601 processed with READ before any of them were processed with EVAL.
5602 Now each --eval form is processed with both READ and EVAL before
5603 the next --eval form is processed. (Thus package operations like
5604 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5605 work as the user might reasonably expect.)
5606 * minor incompatible change: *STANDARD-INPUT* is now only an
5607 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5609 * minor incompatible change: Y-OR-N-P is now character-oriented,
5610 not line oriented. Also, YES-OR-NO-P now works without errors.
5611 (thanks to Antonio Martinez)
5612 * sb-aclrepl module improvements: an integrated inspector, added
5613 repl features, and a bug fix to :trace command.
5614 * Known functions, which cannot be open coded by the backend, are
5615 considered to be able to check types of their arguments. (fixing
5616 a bug report by Nathan J. Froyd)
5617 * fixed a bug in computing method discriminating functions: It is
5618 now possible to define methods specialized on classes which have
5619 forward-referenced superclasses. (thanks to Gerd Moellmann)
5620 * fixed evaluation order in optional entries (reported by Gilbert
5622 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5623 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5624 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5625 required-by-AMOP NAME argument, as well as CLASS and
5626 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5627 * fixed bug 20: DEFMETHOD can define methods using names that are
5628 not the proper names of classes to designate class specializers.
5629 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5630 Unix file descriptors, instead of blowing up. (thanks to Antonio
5632 * Garbage collection refactoring: user-visible change is that a
5633 call to the GC function during WITHOUT-GCING will not do garbage
5634 collection until the end of the WITHOUT-GCING. If you were doing
5635 this you were probably losing anyway.
5636 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5637 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5638 TYPEP the latter but not the former.
5639 * The compiler issues a full WARNING for calls to undefined functions
5640 with names from the CL package.
5641 * MAP-INTO for a vector destination is open coded. (reported by
5642 Brian Downing on c.l.l)
5643 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5644 documentation string.
5645 * fixed some bugs revealed by Paul Dietz' test suite:
5646 ** COPY-ALIST now signals an error if its argument is a dotted
5648 ** Condition slots are now accessed more correctly in the presence
5649 of multiple initargs for a given slot.
5650 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5651 exclude restarts of the same name associated with a different
5653 ** DEFCLASS of forward-referenced classes with another
5654 forward-referenced class in the superclasses list no longer
5656 ** Condition slots are now initialized once each, not multiple
5657 times. (thanks to Gerd Moellmann)
5658 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5660 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5661 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5662 arguments contain duplicated elements.
5663 ** RESTART-CASE understands local macros.
5664 ** RESTART-CASE associates exactly its own restarts with a condition.
5665 ** ENDP in safe mode checks its argument to be of type LIST.
5666 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5667 in question is unbound.
5668 ** Optimized MAKE-INSTANCE functions no longer cause internal
5669 assertion failures in the presence of duplicate initargs.
5670 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5671 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5672 propagated even in the ctor optimized implementation of
5674 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5676 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5677 * a better implementation of SXHASH on (simple) bit vectors,
5678 measured both in execution speed and in distribution of results
5679 over the positive fixnums, has been installed. Likewise, a better
5680 implementation of EQUAL for simple bit vectors is now available.
5681 * fixed CEILING optimization for a divisor of form 2^k.
5682 * fixed bug 240 (emitting extra style warnings "using the lexical
5683 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5684 by Antonio Martinez)
5685 * fixed SXHASH, giving different results for NIL depending on type
5686 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5687 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5688 variable. (found by Rolf Wester)
5689 * SBCL does not ignore type declarations for special
5690 variables. (reported by rif on c.l.l 2003-03-05)
5691 * some bug fixes in contrib/sb-aclrepl/
5692 * fixed some bugs revealed by Paul Dietz' test suite:
5693 ** a bug in the CONS type specifier, whereby the CAR and CDR
5694 types got intertwined, has been fixed;
5695 ** the type system is now able to reason about the interaction
5696 between INTEGER and RATIO types more completely;
5697 ** APPEND, [N]REVERSE and NRECONC check that those their
5698 arguments, which must be proper lists, are really so;
5699 ** An array specialized to be unable to hold elements has been
5700 implemented, as required -- yes, really -- by ANSI;
5701 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5702 on malformed property lists;
5704 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5705 * incompatible packaging change: in line with Unix convention,
5706 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5707 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5708 * REQUIRE and PROVIDE are now optionally capable of doing something
5709 useful. See the documentation string for REQUIRE.
5710 * infrastructure for a managed SBCL contrib system: contributed
5711 modules in this release include:
5712 ** the ASDF system definition facility;
5713 ** an interface to the BSD Sockets API;
5714 ** an ACL-like convenience interface to the repl;
5715 (thanks to Kevin Rosenberg)
5716 ** an implementation of ROTATE-BYTE, with efficient implementation
5718 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5719 gives a closer approximation to the right answer than previously.
5720 (thanks to Raymond Toy)
5721 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5722 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5723 optional environment arguments, as required by ANSI.
5724 * fixed bugs in other functions taking environment objects, allowing
5725 calls with an explicit NIL environment argument to be compiled
5727 * fixed bug 228: primary return values from
5728 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5729 COMPILE or FUNCTION.
5730 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5731 :TYPE will no longer signal errors on innocuous objects.
5732 * fixed bug 231b: SETQ is better at respecting type declarations in
5733 the lexical environment.
5734 * fixed a bug in DEFCLASS: classes named by symbols with no or
5735 unprintable packages can now be defined.
5736 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5737 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5738 * fixed compiler failure related to checking types of functions.
5739 (reported by Robert E. Brown)
5740 * the compiler is now much more consistent in its error-checking
5741 treatment of bounding index arguments to sequence functions: in
5742 (SAFETY 3) code, errors will be signalled in almost all cases if
5743 invalid sequence bounding indices are passed to functions defined
5744 by ANSI to operate on sequences.
5745 * fixed a bug in the build procedure: documentation of SBCL-specific
5746 packages is now preserved and available in the final Lisp image.
5747 * lifted FDEFINITION lookup out of loops in the implementation of
5748 many list operations. (thanks to Robert E. Brown)
5749 * fixed a bug in the reader: the #n# reader macro now works for
5750 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5751 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5752 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5753 E. Brown and Tony Martinez respectively)
5754 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5755 SLOT-BOUNDP: in particular, it is now able to optimize them much
5756 better, and is now not vulnerable to having packages renamed.
5757 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5758 always called when a slot is not present in an instance. (thanks
5760 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5761 longer signal an error on unreading a character following EOF on
5762 the previous constituent stream. (thanks to Tony Martinez)
5763 * fixed some bugs revealed by Paul Dietz' test suite:
5764 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5765 not just nonnegative fixnums;
5766 ** the logical bit-array operators such as BIT-AND now accept an
5767 explicit NIL for their "opt-arg" argument (to indicate a
5768 freshly-consed result bit-array);
5769 ** ELT now signals an error on an invalid sequence index in safe
5771 ** the type system is now cleverer about negations of numeric
5772 types, and consequently understands the BIGNUM and RATIO types
5774 ** the type system is now cleverer about the interaction between
5775 INTEGER and RATIO types: while bugs still remain, many more
5776 cases are accurately computed;
5777 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5778 if it is in the last clause;
5779 ** CONSTANTLY now correctly returns a side-effect-free function in
5781 ** DECLARE is no longer treated as a special-operator; in
5782 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5783 * incremented fasl file version number due to the change in the
5784 DEFSTRUCT-SLOT-DESCRIPTION structure.
5786 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5787 * minor incompatible change: code processed by the "interpreter" or
5788 EVAL now has a compilation optimization policy of (DEBUG 2)
5789 (changed from (DEBUG 1)) to improve debuggability of interactive
5790 development, and to allow the use of the debug RETURN command in
5792 * an experimental implementation of the RETURN command for the
5793 debugger has been included. (thanks to Frederik Kuivinen)
5794 * fixed bug 62: constraints were not propagated into a loop.
5795 * fixed bug in embedded calls of SORT (reported and investigated by
5797 * fixed some bugs revealed by Paul Dietz' test suite:
5798 ** printing and reading of arrays with some dimensions having
5799 length 0 (thanks to Gerd Moellmann);
5800 ** BOA constructor with &AUX argument without a default value does
5801 not cause a type error;
5802 ** CONSTANTP now returns true for all self-evaluating objects.
5804 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5805 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5806 accessors that are related by inheritance, as specified in the
5807 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5808 Valtteri Vuorikoski)
5809 * The compiler is now able to inline functions that were defined in
5810 a complex lexical environment (e.g. inside a MACROLET).
5811 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5813 * Support for the upcoming FreeBSD-5.0 release has been included.
5814 (thanks to Dag-Erling Smorgrav)
5815 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5816 effect when it is not in a toplevel context.
5817 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5818 stand a better chance of being correct. (thanks to Gerd
5820 * fixed bug in COERCE, which now signals an error on coercing a
5821 rational to a bounded real type which excludes the expected
5823 * The compiler is now able to derive types more accurately from the
5824 COERCE and COMPILE functions.
5825 * fixed bug 223: functional binding is considered to be constant
5826 only for symbols in the CL package.
5827 * fixed bug 231: SETQ did not check the type of a variable being set
5828 (reported by Robert E. Brown)
5829 * A new optimization for MAKE-INSTANCE has been included, fixing
5830 various bugs (including relating to :ALLOCATION :CLASS slots and
5831 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5833 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5834 ** As required by ANSI, LOOP now disallows anonymous collection
5835 clauses such as COLLECT I in conjunction with aggregate boolean
5836 clauses such as THEREIS (= I 1);
5837 ** LOOP now signals an error when any variable is reused in the
5838 same loop (including the potentially useful construct analogous
5839 to WITH A = 1 WITH A = (1+ A);
5840 ** IT is only a special loop symbol within the first clause of a
5841 conditional loop clause;
5842 ** LOOP with a typed iteration variable over a hashtable now
5843 signals a type error iff it should.
5844 * fixed some other bugs revealed by Paul Dietz' test suite:
5845 ** FILE-STREAM now names the class previously known as FD-STREAM;
5846 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5847 argument) no longer signals an error;
5848 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5849 of the slot symbol, rather than using the current package
5850 ((:CONC-NAME "") continues to intern the slot's name in the
5852 * incremented fasl file version number, because of the incompatible
5853 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5854 of the new implementation of DEFINE-COMPILER-MACRO.
5856 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5857 * Support for building SBCL for MIPS platforms running in
5858 little-endian mode has now been checked in, and basic
5859 functionality on said platforms verified.
5860 * minor incompatible change: PCL now records the pathname of a file
5861 in which methods and the like are defined, rather than its
5863 * minor incompatible change: TRUENAME now considers the truename of
5864 a file naming a directory to be the pathname with :DIRECTORY
5865 component indicating that directory.
5866 * minor incompatible change: a NAMED clause in the extended form of
5867 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5868 reason for the previous behaviour is unclear.
5869 * more systematization and improvement of CLOS and MOP conformance
5870 in PCL (thanks to Gerd Moellman and Pierre Mai):
5871 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5873 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5874 primary methods with no specializers;
5875 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5877 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5878 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5879 FORWARD-REFERENCED-CLASSes; error reporting on
5880 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5882 ** SXHASH on CLOS instances now uses a slot internal to the
5883 instance to return different numbers on distinct instances,
5884 while preserving the same return value through invocations of
5886 ** DEFMETHOD signals errors when methods with longer incongruent
5887 lambda lists are added to generic functions;
5888 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5889 CLASS, as specified in AMOP;
5890 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5891 on the order returned by the primary method for classes of
5892 class STANDARD-CLASS;
5893 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5894 * fixed some bugs shown by Paul Dietz' test suite:
5895 ** DOLIST puts its body in TAGBODY;
5896 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5898 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5899 value producing form;
5900 ** if more variables are given to PROGV than values, extra
5901 variables are bound and made to have no value;
5902 ** NSUBSTITUTE on list arguments gets the right answer with
5904 ** ELT signals an error of type TYPE-ERROR when the index argument
5905 is not a valid sequence index;
5906 ** LOOP signals (at macroexpansion time) an error of type
5907 PROGRAM-ERROR when duplicate variable names are found;
5908 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5909 ** FUNCALL of special-operators now cause an error of type
5911 ** PSETQ now works as required in the presence of side-effecting
5912 symbol-macro places;
5913 ** NCONC accepts any object as its last argument;
5914 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5916 ** loop-for-as-package does not require a package to be explicitely
5918 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5920 * fixed bug 166: compiler preserves "there is a way to go"
5921 invariant when deleting code.
5922 * fixed bug 172: macro lambda lists with required arguments after
5923 &REST arguments now cause an error to be signalled. (thanks to
5925 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5926 bug. (thanks to Matthew Danish)
5927 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5929 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5930 arguments are lexically rebound. (thanks to Gerd Moellmann and
5932 * fixed bug 194: error messages are now more informative when there
5933 is no primary method applicable in a call to a generic
5934 function. (thanks to Gerd Moellmann)
5935 * fixed bug in command line argument checking (thanks to Julian
5937 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5938 (thanks to Matthew Danish)
5939 * incremented fasl file version number, because of the
5940 SXHASH-related changes in the layout of CLOS data structures
5942 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5943 * minor incompatible change: The runtime (the Unix executable named
5944 "sbcl") is now much pickier about the .core files it will load.
5945 Essentially it now requires .core files to descend from the same
5946 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5947 as the runtime does. (The intent is to prevent the crashes which
5948 can occur, and which can even be reported as mysterious failures,
5949 when people patch the sources or change the build parameters
5950 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5951 sbcl and .core files.)
5952 * fixed bug: VALUES-LIST is no longer optimized away.
5953 * fixed bug 142: The FFI conversion of C string values to Lisp
5954 string values no longer conses excessively. (thanks to Nathan
5955 Froyd porting Raymond Toy's fix to CMU CL)
5956 * began to systematize and improve MOP conformance in PCL (thanks to
5957 Nathan Froyd, Gerd Moellman and Pierre Mai):
5958 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5960 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5961 ** FINALIZE-INHERITANCE is now called on class finalization;
5962 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5963 argument precedence order.
5964 * fixed bug 202: The compiler no longer fails on functions whose
5965 derived types contradict their declared type.
5966 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5967 so it can be non-toplevel.
5968 * The fasl file version number has changed (because of the new
5969 implementation of DEFMACRO).
5970 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5971 safe code, that any length requirement by their type-specifier
5972 argument is valid. The exceptions to this are described in bug
5974 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5975 functions now check the types of their inputs as required by ANSI.
5976 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5977 introduced symbol is DECLAREd to be SPECIAL.
5978 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5979 * fixed bug: :COUNT argument to sequence functions may be negative
5980 * fixed bug: body of DO-SYMBOLS may contain declarations
5981 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5982 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5983 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5984 symbol macro only once
5985 * fixed printing of call frame when argument list is unavailable
5986 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5987 * compiler no longer signals WARNING on unknown keyword
5990 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5991 * A beta-quality port to the mips architecture running Linux,
5992 based on the old CMUCL backend, has been made. It has been tested
5993 on a big-endian kernel, and works sufficiently well to be able to
5994 rebuild itself; it has not been tested in little-endian mode.
5995 * fixed an inconsistency between gencgc.c and purify.c which made
5996 dumping/loading .core files unreliable
5997 * fixed bug 120a: The compiler now deals correctly with IFs where
5998 the consequent is the same as the alternative, instead of
5999 misderiving the return type. (thanks to Alexey Dejneka)
6000 * fixed bug 113: Logical pathnames are now dumpable (the logical
6001 host is resolved at load-time, throwing an error if it is not
6003 * fixed bug 174: FORMAT's error message is slightly clearer when a
6004 non-printing character is used in a format directive.
6005 * fixed several bugs in compiler checking of type declarations, i.e.
6006 violations of the Python "declarations are assertions" principle
6007 (thanks to Alexey Dejneka)
6008 * fixed several bugs in PCL's error checking (thanks to Gerd
6010 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6012 * fixed bug in compilation of functions as first class values
6013 (thanks to Antonio Martinez-Shotton)
6014 * The compiler's handling TYPE-ERRORs which it can prove will
6015 inevitably happen at runtime has been cleaned up and corrected
6016 in several ways. (thanks to Alexey Dejneka)
6017 * improved argument type checking for various basic arithmetic
6018 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6019 lavished on them in the past that they can be compiled in many
6020 ways in different special cases
6021 * fixed bug 181: compiler checks validity of user supplied type
6023 * cleaned up code flushing in optimization: Function calls which
6024 should signal errors for safety purposes (e.g. which ANSI says
6025 should signal errors when their arguments are of incorrect type)
6026 are no longer optimized away.
6027 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6028 * incremented fasl file version number, because changes in the
6029 implementation of sequence functions like COERCE caused
6030 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6031 in old inline expansions) to become undefined. (Actually these
6032 changes were later undone, so we might very well be binary
6033 compatible with 0.7.7 after all, but leaving the version number
6034 incremented seemed like the simplest and most conservative
6037 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6038 * An alpha-quality port to the parisc architecture running Linux,
6039 based on the old CMUCL backend, has been made. This, even more so
6040 than the other backends, should be considered still a work in
6041 progress; known problems include that the Linux kernel in 64-bit
6042 mode does not propagate the correct sigcontext structure to
6043 userspace, and consequently SBCL on a parisc64 kernel will not
6045 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6046 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6047 suppressed.) Also now that the compiler is looking at declarations
6048 in the environment, it checks optimization declarations as well,
6049 and suppresses inlining when (> DEBUG SPEED).
6050 * More fixes have been made to treatment of floating point exception
6051 treatment and other Unix signals. In particular, floating point
6052 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6053 * The detection and handling of control stack exhaustion (infinite
6054 or very deeply nested recursion) has changed. Stack exhaustion
6055 detection is now done by write-protecting pages at the OS level
6056 and applies at all optimization settings; when found, a
6057 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6058 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6059 be caught using IGNORE-ERRORS.
6060 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6061 correctly when transforming recursive LABELS functions to LETs.
6062 (thanks to Alexey Dejneka)
6063 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6064 that are names of constants or global variables.
6065 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6066 alien routines with docstrings.
6067 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6068 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6070 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6071 (thanks to Eric Marsden)
6072 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6073 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6074 * Bug fix: The SPARC backend can now compile functions involving
6075 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6076 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6077 to a functions expecting a PATHNAME-DESIGNATOR.
6078 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6079 lambda lists. (thanks to Alexey Dejneka)
6080 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6081 functions so that EXPORTing the name of the class doesn't cause
6082 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6083 to Antonio Martinez for reporting this)
6084 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6085 constant-folded without failing an assertion. (thanks to Einar
6086 Floystad Dorum for reporting this)
6087 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6088 types are now dealt with more correctly by the compiler.
6089 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6090 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6091 behaviour analogous to RENAME-FILE. This puts its behaviour more
6092 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6094 * The fasl file version number has changed again. (because of the
6095 bug fix involving the names of PCL MAKE-INSTANCE functions)
6097 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6098 * bug fix: Floating point exceptions are treated much more
6099 consistently on the x86/Linux and PPC/Linux platforms.
6100 * Array initialization with :INITIAL-ELEMENT is now much faster for
6101 cases when the compiler cannot open code the array creation, but
6102 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6103 array accesses have also seen a speed increase.
6104 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6105 specified. (This was at the root of some bad interactions between
6106 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6108 * bug fix: Internal error arguments for undefined functions are now
6109 computed correctly on the PPC/Linux platform.
6110 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6111 Raymond Toy's patch for CMU CL)
6112 * Support for the Solaris 9 operating environment has been included
6113 (thanks to Daniel Merritt)
6114 * A very ugly but hopefully complete draft of the missing FFI chapter
6115 of the manual has been created by reformatting the corresponding
6116 CMU CL manual chapter into (currently very ugly and incoherent)
6117 DocBook and bringing it up to date for SBCL behavior. Thus, the
6118 manual is now essentially complete, at least by my extreme
6119 once-and-only-once standards, whereby it's acceptable to refer to
6120 the doc strings of SB-EXT functions as the primary documentation.
6121 * The fasl file version number has changed again, due to cleanup of
6122 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6123 is no longer a static symbol.)
6125 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6126 * SBCL now builds with OpenMCL (version 0.12) as the
6127 cross-compilation host; also, more progress has been made toward
6128 bootstrapping under CLISP.
6129 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6131 * bug 158 fixed: The compiler can now deal with integer loop
6132 increments different from 1; fixing this turned out also to fix
6134 * bug 169 fixed: no more bogus warnings about using lexical bindings
6135 despite the presence of perfectly good SPECIAL declarations (thanks
6136 to David Lichteblau)
6137 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6138 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6139 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6141 * bug 180 fixed: Method combination specifications no longer ignore
6142 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6143 * bug fix: Structure type predicate functions now check their argument
6144 count as they should.
6145 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6146 correctly. (thanks to Pierre Mai)
6147 * minor incompatible change: The --noprogrammer option is deprecated
6148 in favor of the new --disable-debugger option, which is very similar.
6149 (The major difference is that it takes effect at a slightly different
6150 time at startup, causing handling of errors in --sysinit and
6151 --userinit files will be affected differently.) The
6152 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6153 been added to allow this functionality to be controlled from ordinary
6154 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6155 maintainers, who might want to run non-interactive scripts to
6156 build SBCL cores which will later be used interactively.)
6157 * minor incompatible change: The LOAD function no longer, when given
6158 a wild pathname to load, loads all files matching that pathname.
6159 Instead, an error of type FILE-ERROR is signalled.
6161 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6162 * bug 147 fixed: The compiler preserves its block link/count
6163 invariants more correctly now so that it doesn't crash. (thanks
6165 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6167 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6168 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6169 no-value-for-this-character as NIL (as specified by ANSI).
6170 * HOST-NAMESTRING on physical pathnames now returns a string that is
6171 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6172 (thanks to Christophe Rhodes)
6173 * The Alpha port handles icache flushing more correctly. (thanks to
6175 * More progress has been made toward bootstrapping under CLISP. (thanks
6176 to Christophe Rhodes)
6177 * The fasl file format has changed again, because dynamic loading
6178 on OpenBSD (which has non-ELF object files) motivated some cleanups
6179 in the way that foreign symbols are transformed and passed around.
6180 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6181 is no longer treated as whitespace by the reader, but instead as
6182 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6183 |A
\x7fB|, instead of A as it used to.
6185 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6186 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6187 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6188 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6189 this as of 0.7.1.45, but was left out of the previous news section
6190 (thanks to Dan Barlow)
6191 * SBCL now runs on the Solaris operating system on SPARC architectures
6192 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6193 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6194 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6195 * SPARC backend cleanups, allowing builds of cores optimized for V8
6196 and V9 SPARCS, and also emission of code targeted to a particular
6197 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6199 * SBCL is closer to bootstrapping under CLISP, thanks to various
6200 fixes by Christophe Rhodes.
6201 * The fasl file format has changed again, to allow the compiler's
6202 INFO database to support symbol macros.
6203 * The user manual (in doc/) is formatted into HTML more nicely.
6204 (thanks to coreythomas)
6205 * The system is smarter about SUBTYPEP relationships, especially
6206 those involving NOT types (including types such as ATOM which are
6207 represented internally using NOT types). Thus SUBTYPEP is less
6208 likely to return (VALUES NIL NIL) in general, and in particular
6209 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6211 * The fasl file format has changed again, because the internal
6212 representation of types now includes a new slot to support the new
6213 SUBTYPEP-of-NOT-types logic.
6214 * (not a change in the main branch of SBCL, but a related prototype
6215 which can hopefully be merged into the main branch of SBCL in the
6216 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6217 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6218 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6219 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6220 dispatch macro character combinations. (thanks to Alexey Dejneka)
6221 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6222 that superficially look like logical namestrings correctly.
6223 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6225 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6226 default supplied-p) for &optional and &key arguments. (thanks to
6229 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6230 * incompatible change: The compiler is now less aggressive about
6231 tail call optimization, doing it only when (> SPACE DEBUG) or
6232 (> SPEED DEBUG). (This is an incompatible change because there are
6233 programs which relied on the old CMU-CL-style behavior to optimize
6234 away their unbounded recursion which will now die of stack overflow.)
6235 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6236 for non-GENCGC systems has been increased to 20M (since that
6237 seems much closer to the likely performance optimum for modern
6238 systems than the old 4M value was)
6239 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6240 and *DEBUG-PRINT-LEVEL*
6241 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6242 of CMU CL's support for SPARC, and various endianness and other
6243 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6244 * new syntactic sugar for the Unix command line: --load foo.bar is now
6245 an alternate notation for --eval '(load "foo.bar")'.
6247 ** The system now detects stack overflow and handles it gracefully,
6248 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6249 optimization settings. (This is a good thing in general, and
6250 its introduction in this version should be particularly timely
6251 for anyone whose code fails because of suppression of tail
6253 ** The system now hunts for the C variable "environ" in a more
6254 devious way, to avoid segfaults when the C library version differs
6255 between compile time and run time. (thanks to Christophe Rhodes)
6256 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6257 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6258 ** The compiler no longer issues bogus style warnings for undefined
6259 classes in the same source file as the DEFCLASSes which defined
6260 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6262 ** fixes in CONDITION class precedence list for undefined function
6263 errors (thanks to Alexei Dejneka)
6264 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6265 correctly. (thanks to Dan Barlow)
6266 ** portability fixes aiming at bootstrapping under CLISP (thanks
6267 to Dave McDonald and Christophe Rhodes)
6268 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6269 ** fixes in type translation and and type inference (thanks to
6271 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6272 ** various fixes in the new ports (thanks to Dan Barlow)
6273 * several changes related to debugging:
6274 ** suppression of tail recursion, as noted above
6275 ** stack overflow detection, as noted above
6276 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6277 is now the default. (For some time encapsulation has been more
6278 reliable than the breakpoint-based :ENCAPSULATE NIL
6279 implementation, at least on X86 systems; and I just noticed that
6280 encapsulation also seems closer to the spirit of the ANSI
6283 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6285 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6286 up properly again. (There was a packaging bug in 0.7.0 which
6287 left their definitions in SB-SYS::LOAD-FOREIGN and
6288 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6289 vital for most things which interface to C-level interfaces,
6290 like extensions working with sockets or databases or
6291 Perl-compatible regexes or whatever, and the need to fix
6292 this bug is the main reason that 0.7.1 was released so
6294 ** DEFGENERIC is now choosier about the methods it redefines, so that
6295 reLOADing a previously-LOADed file containing DEFGENERICs does
6296 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6297 cycle now works as it should. (thanks to Alexey Dejneka)
6298 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6299 fixed by Christophe Rhodes. (He actually submitted this patch
6300 months ago, and I delayed until after 0.7.0.)
6301 ** Bug 111 (internal compiler confusion about runtime checks on
6302 FUNCTION types) was fixed by Alexey Dejneka.
6303 * Some internal cleanups (getting rid of variables which aren't
6304 needed now that the byte interpreter is gone) caused the fasl
6305 file format number to change again.
6307 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6308 * major incompatible change: The default fasl file extension, i.e. the
6309 default extension for files produced by COMPILE-FILE, has changed
6310 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6312 ** There are many changes in the implementation of the compiler.
6313 SBCL is now essentially a compiler-only implementation of ANSI
6314 Common Lisp. EVAL still "interprets" a few special cases, but
6315 almost all the interesting cases are handled by creating
6316 a LAMBDA expression, calling COMPILE on it, then calling
6317 FUNCALL on the result.
6318 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6319 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6320 Since the code is newer, there might still be some new bugs
6321 (though not as many as before Martin Atzmueller's fixes:-). But
6322 the new code is substantially simpler and clearer, and hopefully
6323 any remaining bugs will be simpler, less fundamental, and more
6324 fixable then the bugs in the old code.
6325 ** The revised compiler is still a little unsteady on its feet.
6327 *** The debugging information it produces (particularly the names
6328 of FUNCTION objects) is sometimes much less useful than what
6329 the old compiler produced.
6330 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6331 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6332 within a MACROLET) has been temporarily weakened.
6333 ** There are new compiler optimizations for various functions:
6334 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6335 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6336 *** the math functions TRUNCATE, FLOOR, and CEILING
6337 *** the function-of-all-trades COERCE
6338 Mostly these should be transparent, but there's one
6339 potentially-annoying problem (bug 117): when the compiler
6340 inline-expands a function and does type analysis on the result,
6341 it can create control paths which have type mismatches, and
6342 when it can't prove that those control paths aren't taken,
6343 it will issue WARNINGs about the type mismatches. This is
6344 a particular problem in practice for the new sequence functions.
6345 It's not clear how this should be fixed, and for now, a
6346 workaround is given in the entry for 117 in the BUGS file.
6347 ** (Because of the interaction between the two previous items --
6348 occasional inlining problems and new inline expansions -- some
6349 of the new sequence function optimizations won't really kick in
6350 completely until debugging information, and then inlining, are
6351 straightened out in some future version.)
6352 * minor incompatible changes:
6353 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6354 DIRECTORY no longer implicitly promotes NIL slots of its
6355 pathname argument to :WILD. In particular, when you ask for the
6356 contents of a directory (which you used to be able to do without
6357 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6358 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6359 ** changes in behavior that ANSI explicitly defines to be
6360 implementation dependent:
6361 *** The new compiler-only implementation still conforms with ANSI,
6362 but acts a little different than before. Besides the obvious
6363 changes in performance tradeoffs (that the cost per form passed
6364 to EVAL has gone up, and the cost per form executed by EVAL
6365 has gone down), the behavior of the system changes a little
6366 because there are no longer any interpreted function objects.
6367 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6368 e.g. doing COMPILE on the output of interactive DEFUN is
6370 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6372 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6373 has changed from (:CL) to NIL.
6374 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6375 e.g. #\Newline and #\Tab, don't have names specified in the
6376 ANSI Common Lisp standard, is now based on their ASCII symbolic
6377 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6378 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6379 are no longer used for output.
6380 ** changes in internal implementation constants:
6381 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6382 4 million. (If your application spends a lot of time GCing and
6383 you have a lot of RAM, you might want to experiment with
6384 increasing it even more.)
6385 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6386 However, almost all old code should still continue to work without
6387 immediate update, as SB-C-CALL is now a (deprecated) nickname
6389 ** Old operator names in the style DEF-FOO are now deprecated in
6390 favor of new corresponding names DEFINE-FOO, for consistency with
6391 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6392 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6393 internal symbols, but a few supported extensions like
6394 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6395 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6396 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6397 etc. as you get deeper into recursive calls to the debugger
6398 command loop, instead of the old "5]", "5]]", "5]]]"
6399 sequence. (I was motivated to do this when squabbles between
6400 ILISP and SBCL left me very deeply nested in the debugger. In the
6401 short term, this change will probably provoke more ILISP/SBCL
6402 squabbles, but hopefully it will be an improvement in the long run.)
6403 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6404 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6405 function, since declaiming return types involving aliens is
6406 (1) annoyingly messy to do by hand and (2) vital to efficient
6407 compilation of code which calls such functions.
6408 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6409 longer reexported by the SB-EXT package. They're solely useful
6410 for alien code, so it seems more logical that you should get
6411 them from the SB-ALIEN package, not in SB-EXT.
6412 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6413 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6414 features. Instead, the code that they used to control is always
6415 built into the system.
6416 * many other bug fixes
6417 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6418 advantage of the new EVAL-WHEN stuff and to clean them up in
6419 general, and they are now more ANSI-compliant in a number of
6420 ways. Martin Atzmueller is responsible for a lot of this.
6421 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6423 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6424 *** correct ERROR type for various file operations
6425 *** some fixes for Lisp streams
6426 *** DEFMETHOD syntax checking
6427 *** changing old weird representation of debug information as
6428 strings (which, among their other deficiencies, don't transform
6429 correctly when you rename packages, and don't change their
6430 print representation when you change things like *PACKAGE*
6431 and *PRINT-LENGTH*) to symbols and lists of symbols
6432 He also made several improvements and fixed several bugs in DESCRIBE.
6433 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6435 *** misbehavior of WRITE-STRING/WRITE-LINE
6436 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6437 and several other LOOP problems as well
6438 *** DIRECTORY when similar filenames are present
6439 *** DEFGENERIC with :METHOD options
6440 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6441 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6442 *** argument ordering in FIND with :TEST option
6443 *** mishandled package designator argument in APROPOS-LIST
6444 *** various problems in the backquote readmacro
6445 *** a bug in APROPOS
6446 *** probably some others that I'm not describing very well here,
6447 since the CVS log documents them by reference to sbcl-devel
6448 messages, and the SourceForge archives aren't working well.:-(
6449 ** Dan Barlow improved the Alpha port (and is making progress on the
6450 PPC port, for those of you who think different).
6451 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6452 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6453 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6454 continues to work on the SPARC port (for those of you in a position
6455 to look down upon our little PC-compatible boxes from a great height).
6456 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6457 and uses that copy, rather than the current dynamic value, when
6458 it's trying to decide whether to truncate output. Thus e.g.
6459 (let ((*print-lines* 50))
6460 (pprint-logical-block (stream nil)
6462 (let ((*print-lines* 8))
6463 (print (aref possiblybigthings i) stream)))))
6464 should now truncate the logical block only at 50 lines, instead of
6465 often truncating it at 8 lines, as it did before.
6466 * The doc/cmucl/ directory, containing old CMU CL documentation
6467 from the time of the fork, is no longer part of the base system.
6468 SourceForge has shut down its anonymous FTP service, and with it
6469 my original plan for distributing the old CMU CL documentation
6470 there. For now, if you need these files you can download an old
6471 SBCL source release and extract them from it.
6472 * The fasl file version number changed again, for dozens of reasons,
6473 some of which are apparent above.
6475 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6476 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6477 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6478 patch, so that DISASSEMBLE output is much nicer.
6479 * The code in the SB-PROFILE package now seems reasonably stable.
6480 I still haven't decided what the final interface should look like
6481 (I'd like PROFILE to interact cleanly with TRACE, since both
6482 facilities use function encapsulation) but if you have a need
6483 for profiling now, you can probably use it successfully with
6484 the current CMU-CL-style interface.
6485 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6486 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6487 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6488 link now returns the dangling link itself, and for similar
6489 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6490 link itself. (In these cases the old code signalled an error and
6491 looped endlessly, respectively.) Thus, DIRECTORY now works even
6492 in the presence of dangling and cyclic symbolic links.
6493 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6494 is now a supported extension again, since the consensus on
6495 sbcl-devel was that it can be useful for ordinary development
6496 work, not just for debugging SBCL itself.
6497 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6498 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6499 that currently-defined functions might be redefined later with
6500 different return types.
6501 * Hash tables can be printed readably, as inspired by CMU CL code
6502 of Eric Marsden and SBCL code of Martin Atzmueller.
6503 * better error handling in CLOS method combination, thanks to
6504 Martin Atzmueller porting Pierre Mai's CMU CL patches
6505 * more overflow fixes for >16Mbyte I/O buffers
6506 * A bug in READ has been fixed, so that now a single Ctrl-D
6507 character suffices to cause end-of-file on character streams.
6508 In particular, now you only need one Ctrl-D at the command
6509 line (not two) to exit SBCL.
6510 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6512 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6513 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6514 does the right thing.
6515 * The implementation of some type tests, especially for CONDITION
6516 types, is now tidier and maybe faster, due to CMU CL code
6517 originally by Douglas Crosher, ported by Martin Atzmueller.
6518 * Some math functions have been fixed, and there are new
6519 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6520 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6521 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6522 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6523 likely to be built into sbcl-0.7.0.)
6524 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6525 CL, ported to SBCL by Martin Atzmueller)
6526 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6527 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6528 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6529 * There's a new slam.sh hack to shorten the edit/compile/debug
6530 cycle for low-level changes to SBCL itself, and a new
6531 :SB-AFTER-XC-CORE target feature to control the generation of
6532 the after-xc.core file needed by slam.sh.
6533 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6534 COMPILE-FILE is no longer supported, so that now every function
6535 gets an entry point, so that block compilation looks a little
6536 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6537 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6538 returns the number of bytes consed since the system started,
6539 rather than the number consed since the first time the function
6540 was called. (The new definition parallels ANSI functions like
6541 CL:GET-INTERNAL-RUN-TIME.)
6542 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6543 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6544 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6545 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6546 * Fasl file version numbers are now independent of the target CPU,
6547 since historically most system changes which required version
6548 number changes have affected all CPUs equally. Similarly,
6549 the byte fasl file version is now equal to the ordinary
6552 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6553 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6554 is no longer recognized. I apologize for this, because it was
6555 listed in SB-EXT as a supported extension, but I found that
6556 its existing behavior was poorly specified, as well as incorrectly
6557 specified, and it looked like too much of a mess to straighten it
6558 out. I have enough on my hands trying to get ANSI stuff to work..
6559 * many patches ported from CMU CL by Martin Atzmueller, with
6560 half a dozen bug fixes in pretty-printing and the debugger, and
6561 half a dozen others elsewhere
6562 * fixed bug 13: Floating point infinities are now supported again.
6563 They might still be a little bit flaky, but thanks to bug reports
6564 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6565 as flaky as they were.
6566 * The --noprogrammer command line option is now supported. (Its
6567 behavior is slightly different in detail from what the old man
6568 page claimed it would do, but it's still appropriate under the
6569 same circumstances that the man page talks about.)
6570 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6571 are now supported, and enabled by default. Thus, the compiler can
6572 handle many floating point and complex operations much less
6573 inefficiently. (Thus e.g. you can implement a complex FFT
6575 * The compiler now detects type mismatches between DECLAIM FTYPE
6576 and DEFUN better, and implements CHECK-TYPE more correctly, and
6577 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6578 thanks to patches from Martin Atzmueller.
6579 * various fixes to make the cross-compiler more portable to
6580 ANSI-conforming-but-different cross-compilation hosts (notably
6581 Lispworks for Windows, following bug reports from Arthur Lemmens)
6582 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6583 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6584 fixed thanks to Pierre Mai's CMU CL patches.
6585 * fixes to keep the system from overflowing internal counters when
6586 it tries to use i/o buffers larger than 16M bytes
6587 * fixed bug 45a: Various internal functions required to support
6588 complex special functions have been merged from CMU CL sources.
6589 (When I was first setting up SBCL, I misunderstood a compile-time
6590 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6591 * improved support for type intersection and union, fixing bug 12
6592 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6593 more obscure bugs as well
6594 * some steps toward byte-compiling non-performance-critical
6595 parts of the system, courtesy of patches from Martin Atzmueller
6596 * Christophe Rhodes has made some debian packages of sbcl at
6597 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6598 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6599 stable, but are nonetheless usable. When he's ready, I'd be happy
6600 to add them to the SourceForge "File Releases" section. (And if
6601 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6602 * new fasl file format version number (because of changes in
6603 internal representation of (OR ..) types to accommodate the new
6604 support for (AND ..) types, among other things)
6606 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6607 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6609 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6611 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6612 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6613 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6614 * DESCRIBE now works on structure objects again.
6615 * Most function call argument type mismatches are now handled as
6616 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6617 know whether the function will be redefined before the call is
6618 executed. (The compiler could flag local calls with full WARNINGs,
6619 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6620 it doesn't keep track of enough information to know whether calls
6621 are local in this sense.)
6622 * Compiler output is now more verbose, with messages truncated
6623 later than before. (There should be some supported way for users
6624 to override the default verbosity, but I haven't decided how to
6625 provide it yet, so this behavior is still controlled by the internal
6626 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6627 src/compiler/ir1util.lisp.)
6628 * Fasl file format version numbers have increased again, because
6629 support for the Gray streams extension changes the layout of the
6630 system's STREAM objects.
6631 * The Gray subclassable streams extension now works, thanks to a
6632 patch from Martin Atzmueller.
6633 * The full LOAD-FOREIGN extension (not just the primitive
6634 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6635 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6636 but like most other programs, it defaults to copying the Unix
6637 environment from the original process instead of starting the
6638 new process in an empty environment.
6639 * Extensions which manipulate the Unix environment now support
6640 an :ENVIRONMENT keyword option which doesn't smash case or
6641 do other bad things. The CMU-CL-style :ENV option is retained
6642 for porting convenience.
6643 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6644 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6646 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6648 * A patch from Martin Atzmueller seems to have solved the SIGINT
6649 problem, and as far as we know, signal-handling now works cleanly.
6650 (If you find any new bugs, please report them!)
6651 * The system no longer defaults Lisp source file names to types
6652 ".l", ".cl", or ".lsp", but only to ".lisp".
6653 * The compiler no longer uses special default file extensions for
6654 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6655 seems to expect a single default extension for all compiled code,
6656 and there's no compelling reason to try to stretch the standard
6657 to allow two different extensions.) Instead, byte-compiled files
6658 default to the same extension as native-compiled files.
6659 * Fasl file format version numbers have increased again, because
6660 a rearrangement of internal implementation packages made some
6661 dumped symbols in old fasl files unreadable in new cores.
6662 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6663 many fewer weird special cases.
6664 * Bug #17 (differing COMPILE-FILE behavior between logical and
6665 physical pathnames) has been fixed, and some related misbehavior too,
6666 thanks to a patch from Martin Atzmueller.
6667 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6668 by Tim Moore, ported to SBCL by Martin Atzmueller.
6669 * Martin Atzmueller fixed several filesystem-related problems,
6670 including bug #36, in part by porting CMU CL patches, which were
6671 written in part by Paul Werkowski.
6672 * More compiler warnings in src/runtime/ are gone, thanks to
6673 more patches from Martin Atzmueller.
6674 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6677 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6679 * DESCRIBE now works on CONDITION objects.
6680 * The debugger now handles errors which arise when trying to print
6681 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6683 * The build system now uses an additional file, customize-target-features.lisp,
6684 to allow local modifications to the target *FEATURES* list. (The point of
6685 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6686 debugging features enabled, without having to worry about propagating it
6687 into everyone's system when I do a "cvs update".) When no
6688 customize-target-features.lisp file exists, the target *FEATURES* list
6689 should be constructed the same way as before.
6690 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6691 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6692 warn about behavior which is undefined under the ANSI spec. Note: This
6693 is specified by ANSI, but it's not very popular with programmers.
6694 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6695 macro in the SBCL sources for an example of a workaround which you
6696 might use to make portable ANSI-standard code which does what you want.
6697 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6698 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6699 when it's used as a non-toplevel form. (This is required in order
6700 to implement the DEFCONSTANT-EQX macro.)
6701 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6702 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6703 funny things, due to bugs in the implementation of EVAL-WHEN
6704 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6705 non-toplevel DEFCONSTANTs are uncommon.)
6706 * The core file version number and fasl file version number have been
6707 incremented, because the old noncompliant DEFCONSTANT behavior involved
6708 calling functions which no longer exist, and because I also took the
6709 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6710 * fixed bug 1 (error handling before read-eval-print loop starts), and
6711 redid debugger restarts and related debugger commands somewhat while
6713 ** The QUIT debugger command is gone, since it did something
6714 rather different than the SB-EXT:QUIT command, and since it never
6715 worked properly outside the main toplevel read/eval/print loop.
6716 Invoking the new TOPLEVEL restart provides the same functionality.
6717 ** The GO debugger command is also gone, since you can just invoke
6718 the CONTINUE restart directly instead.
6719 ** The TOP debugger command is also gone, since it's redundant with the
6720 FRAME 0 command, and since it interfered with abbreviations for the
6722 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6724 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6725 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6726 some porting work by Martin Atzmueller)
6727 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6728 with a boatload of patches which he ported to SBCL. Now that those
6730 ** The system tries to make sure that its low-priority messages
6731 are prefixed by semicolons, to help people who like to use
6732 syntax highlighting in their ILISP buffer. (This patch
6733 was originally due to Raymond Toy.)
6734 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6735 patches originally written by Raymond Toy.
6736 ** The compiler understands coercion between single-value and
6737 multiple-VALUES type expressions better, getting rid of some very
6738 weird behavior, thanks to patches originally by Robert MacLachlan
6739 and Douglas Crosher.
6740 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6741 lambda lists, thanks to a patch originally by Pierre Mai.
6742 ** The system no longer bogusly warns about "abbreviated type
6744 ** The compiler gets less confused by inlining and RETURN-FROM,
6745 thanks to some patches originally by Tim Moore.
6746 ** The system no longer hangs when dumping circular lists to fasl
6747 files, thanks to a patch originally from Douglas Crosher.
6748 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6749 undefined function error.
6750 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6751 in structure slot initforms) for now, documented workaround instead:-|
6752 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6753 * fixed bug 5: added stubs for various Gray stream functions called
6754 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6755 installed, at least appropriate type errors are generated
6756 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6757 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6758 consistently in DEFMETHOD forms.
6759 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6760 it doesn't seem to affect SBCL after all
6761 * The C runtime system now builds with better optimization and many
6762 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6764 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6766 * The system is now under CVS at SourceForge (instead of the
6767 CVS repository on my home machine).
6768 * The new signal handling code has been tweaked to treat register
6769 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6770 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6771 downstream, e.g. in debug-int.lisp, has implicit dependencies
6772 on the unsignedness of integer representation of machine words,
6773 and that caused the system to bomb out with infinite regress
6774 when trying to recover from type errors involving signed values,
6775 e.g. (BUTLAST '(1 2 3) -1).)
6776 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6777 (This was one of the bugs Peter Van Eynde reported back in July.)
6778 * The system now uses code inspired by Colin Walters' O(N)
6779 implementation of MAP (from the cmucl-imp@cons.org mailing
6780 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6781 inline the MAP operation, and there is more than one
6782 sequence argument to the MAP call (so that it can't just
6783 do ETYPECASE once and for all based on the type of the
6784 single sequence argument). (The old non-inline implementation
6785 of the general M-argument sequence-of-length-N case required
6786 O(M*N*N) time when any of the sequence arguments were LISTs.)
6787 * The QUIT :UNIX-CODE keyword argument has been renamed to
6788 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6789 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6791 * Raymond Wiker's patches to port dynamic loading from Linux to
6792 FreeBSD have been added.
6793 * The BUGS file is now more nearly up to date, thanks in large part
6794 to Martin Atzmueller's review of it.
6795 * The debugger now flushes standard output streams before it begins
6796 its output ("debugger invoked" and so forth).
6797 * The core version number and fasl file version number have both
6798 been incremented, because of incompatible changes in the layout
6800 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6801 used to not be called for a saved Lisp image.)
6802 * Martin Atzmueller's version of a patch to fix a compiler crash,
6803 as posted on sbcl-devel 13 September 2000, has been installed.
6804 * Instead of installing Martin Atzmueller's patch for the
6805 compiler transform for SUBSEQ, I deleted the compiler transform,
6806 and transforms for some similar consing operations.
6807 * A bug in signal handling which kept TRACE from working on OpenBSD
6809 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6810 away by constant folding
6811 * The system now defines its address space constants in one place
6812 (in the Lisp sources), and propagates them automatically elsewhere
6813 (through GENESIS and the sbcl.h file). Therefore, patching the
6814 address map is less unnecessarily tedious and error-prone. The
6815 Lisp names of address space constants have also been systematized.
6816 * CVS tags like dollar-Header-dollar have been removed from
6817 the sources, because they have never saved me trouble and
6818 they've been source of trouble working with patches and other
6819 diff-related operations.
6820 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6821 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6823 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6825 * The system has been ported to OpenBSD.
6826 * The system now compiles with a simple "sh make.sh" on the systems
6827 that it's supported on. I.e., now you no longer need to tweak
6828 text in the target-features.lisp-expr and symlinks in src/runtime/
6829 by hand, the make.sh takes care of it for you.
6830 * The system is no longer so grossly inefficient when compiling code
6831 involving vectors implemented as general (not simple) vectors (VECTOR T),
6832 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6833 which dares to use the various sequence functions on non-simple
6834 vectors, takes less of a performance hit.
6835 * There is now a primitive type predicate VECTOR-T-P
6836 to test for the (VECTOR T) type, so that e.g.
6837 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6838 can now be compiled with some semblance of efficiency. (The old code
6839 turned the type declaration into a full call to %TYPEP at runtime!)
6840 * AREF on (VECTOR T) is still not fast, since it's still compiled
6841 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6842 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6843 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6844 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6845 without making full calls to SUBTYPEP at runtime.
6846 (Some analogous efficiency issues for non-simple vectors specialized to
6847 element types other than T, or for non-simple multidimensional arrays,
6848 have not been addressed. They could almost certainly be handled the
6849 same way if anyone is motivated to do so.)
6850 * The changes in array handling break binary compatibility, so
6851 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6852 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6853 instead of (VALUES T T).
6854 * By following the instructions that Dan Barlow posted to sbcl-devel
6855 on 2 July 2000, I was able to enable primitive dynamic object
6856 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6857 functionality is not implemented (since it calls ld to resolve
6858 library references automatically, requiring RUN-PROGRAM for its
6859 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6860 try to resolve library references) is now supported.
6861 * The system now flushes the standard output streams when it terminates,
6862 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6863 them at several other probably-convenient times, e.g. in each pass of
6864 the toplevel read-eval-print loop, and after evaluating a form given
6865 as an "--eval" command-line option. (These changes were motivated by a
6866 discussion of stream flushing issues on cmucl-imp in August 2000.)
6867 * The source transform for TYPEP of array types no longer assumes
6868 that an array whose element type is a not-yet-defined type
6869 is implemented as an array of T, but instead punts, so that the
6870 type will be interpreted at runtime.
6871 * There is now some support for cross-compiling in make.sh: each of
6872 the phases of make.sh has its own script. (This should be transparent
6873 to people doing ordinary, non-cross-compile builds.)
6874 * Since my laptop doesn't have hundreds of megabytes of memory like
6875 my desktop machine, I became more motivated to do some items on
6876 my to-do list in order to reduce the size of the system a little:
6877 ** Arrange for various needed-only-at-cold-init things to be
6878 uninterned after cold init. To support this, those things have
6879 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6880 symbols with such names are now uninterned after cold init).
6881 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6882 fasl files for cold load.
6883 ** Remove the old compiler structure pooling code (which used to
6884 be conditional on the target feature :SB-ALLOC) completely.
6885 ** Redo the representation of some data in cold init to be more compact.
6886 (I also looked into supporting byte compiled code at bootstrap time,
6887 which would probably reduce the size of the system a lot, but that
6888 looked too complicated, so I punted for now.)
6889 * The maximum signal nesting depth in the src/runtime/ support code has
6890 been reduced from 4096 to 256. (I don't know any reason for the very
6891 large old value. If the new smaller value turns out to break something,
6892 I'll probably just bump it back up.)
6893 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6895 * Many, many bugs reported by Peter Van Eynde have been added to
6896 the BUGS list; some have even been fixed.
6897 * While enabling dynamic object file loading, I tried to make the
6898 code easier to understand, renaming various functions and variables
6899 with less ambiguous names, and changing some function calling
6900 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6901 * While trying to figure out how to do the OpenBSD port, I tried to
6902 clean up some of the code in src/runtime/. In particular, I dropped
6903 support for non-POSIX signal handling, added various comments,
6904 tweaked the code to reduce the number of compilation warnings, and
6905 renamed some files to increase consistency.
6906 * To support the new automatic configuration functionality in make.sh,
6907 the source file target-features.lisp-expr has been replaced with the
6908 source file base-target-features.lisp-expr and the machine-generated
6909 file local-target-features.lisp-expr.
6910 * fixed a stupid quoting error in make.sh so that using CMU CL
6911 "lisp -batch" as cross-compilation host works again
6913 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6915 * DESCRIBE no longer tries to call itself recursively to describe
6916 bound/fbound values, so that it no longer fails on symbols which are
6917 bound to themselves (like keywords, T, and NIL).
6918 * DESCRIBE now works on generic functions.
6919 * The printer now prints less-screwed-up representations of closures
6920 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6921 * A private symbol is used instead of the :EMPTY keyword previously
6922 used to mark empty slots in hash tables. Thus
6923 (DEFVAR *HT* (MAKE-HASH-TABLE))
6924 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6925 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6926 now does what ANSI says that it should. (You can still get
6927 similar noncompliant behavior if bang on the hash table
6928 implementation with all the symbols you get back from
6929 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6930 This breaks binary compatibility, since tests for equality to
6931 :EMPTY are wired into things like the macroexpansion of
6932 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6934 * There's now a minimal placeholder implementation for CL:STEP,
6935 as required by ANSI.
6936 * An obscure bug in the interaction of the normal compiler, the byte
6937 compiler, inlining, and structure predicates has been patched
6938 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6939 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6941 * Missing ordinary arguments in a macro call are now detected even
6942 when the macro lambda list contains &KEY or &REST.
6943 * The debugger no longer complains about encountering the top of the
6944 stack when you type "FRAME 0" to explicitly instruct it to go to
6945 the top of the stack. And it now prints the frame you request even
6946 if it's the current frame (instead of saying "You are here.").
6947 * As specified by ANSI, the system now always prints keywords
6948 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6950 * The default initial SIZE of HASH-TABLEs is now smaller.
6951 * Type information from CLOS class dispatch is now propagated
6952 into DEFMETHOD bodies, so that e.g.
6953 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6955 is now basically equivalent to
6956 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6957 (DECLARE (TYPE SINGLE-FLOAT X))
6959 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6960 operation, without having to do run-time type dispatch.
6961 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6962 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6963 * Since I don't seem to be making big file reorganizations very often
6964 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6965 is overflowing my ability to conveniently back them up), I've finally
6966 checked the system into CVS. (The CVS repository is on my home system,
6967 not at SourceForge -- putting it on SourceForge might come later.)
6968 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6969 high-level GC-NOTIFY-FOO functions send their output. (There's
6970 still very little control of where low-level verbose GC functions
6971 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6972 less than it used to -- the GC-NOTIFY-FOO functions are now under
6973 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6974 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6975 in only one place in the source code, and propagates it automatically
6976 everywhere that it's needed. Thus e.g. when I bump the version from
6977 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6978 * The C source files now include boilerplate legalese and documentation
6979 at the head of each file (just as the Lisp source files already did).
6980 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6981 to his page will be replaced with a link to his new CLiki service.
6983 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6985 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6986 * The build process now looks for GNU make under the default name "gmake",
6987 instead of "make" as it used to. If GNU make is not available as "gmake"
6988 on your system, you can change this default behavior by setting the
6989 GNUMAKE environment variable.
6990 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6991 can build without error under CMU CL.
6993 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6995 * There is now a partial SBCL user manual (with some new text and some
6996 text cribbed from the CMU CL manual).
6997 * The beginnings of a profiler have been added (starting with the
6998 CMU CL profiler and simplifying and cleaning up). Eventually the
6999 main interface should be through the TRACE macro, but for now,
7000 it's still accessed through vaguely CMU-CL-style functions and macros
7001 exported from the package SB-PROFILE.
7002 * Some problems left over from porting CMU CL to the new
7003 cross-compilation bootstrap process have been cleaned up:
7004 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7005 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7006 part when getting rid of the compiler *BACKEND* stuff.)
7007 ** The value of *NULL-TYPE* was screwed up, because it was
7008 being initialized before the type system knew the final
7009 definition of the 'NULL type. This screwed up several key
7010 optimizations in the compiler, causing inefficiency in all sorts
7011 of places. (I found it because I wanted to understand why
7012 GET-INTERNAL-RUN-TIME was consing.)
7013 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7014 PROCLAIM FTYPE information. Unfortunately this broke binary
7015 compatibility again, since now the forms output by DEFGENERIC
7016 to refer to functions which didn't exist in 0.6.3.
7017 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7018 can use the new (as of 0.6.3) transform for SOME into MAP into
7020 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7021 values to (INTEGER 0 1000000), so that the time code will no longer
7022 occasionally get blown up by Linux returning 1000000 microseconds
7023 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7024 its output conform to the ANSI spec. (Alas, this makes its output
7025 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7026 * A full call to MAP NIL with a single sequence argument no longer conses.
7027 * fixes to problems pointed out by Martin Atzmueller:
7028 * The manual page no longer talks about multiprocessing as though
7029 it were currently supported.
7030 * The ILISP support patches have been removed from the distribution,
7031 because as of version 5.10.1, ILISP now supports SBCL without us
7032 having to maintain patches.
7033 * added a modified version of Raymond Toy's recent CMU CL patch for
7034 EQUALP comparison of HASH-TABLE
7036 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7038 * The system still can't cross-compile itself with
7039 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7040 entails), but at least it can compile more of itself that way
7041 than it used to be able to, and various buglets which were uncovered
7042 by trying to cross-compile itself that way have now been fixed.
7043 * This release breaks binary compatibility again. This time
7044 at least I've incremented the FASL file format version to 2, so that the
7045 problem can be detected reliably instead of just causing weird errors.
7046 * various new style warnings:
7047 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7048 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7049 ** using the lexical binding of a variable named in the *FOO* style
7050 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7051 as specified by ANSI.
7052 * *RANDOM-STATE* is no longer automatically initialized from
7053 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7054 default behavior of the system is to repeat its behavior every time
7055 it's run. If you'd like to change this behavior, you can always
7056 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7057 old convention there was no comparably easy way to get the system to
7058 repeat its behavior every time it was run.
7059 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7060 FTYPE declarations has been removed, in favor of their ANSI
7061 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7062 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7063 the types of their sequence arguments can be determined at compile time.
7064 This is done through a new open code expansion for MAP which eliminates
7065 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7066 argument types can be determined at compile time.
7067 * The optimizer now transforms COERCE into an identity operation when it
7068 can prove that the coerced object is already of the correct type. (This
7069 can be a win for machine generated code, including the output of other
7070 optimization transforms, such as the MAP transform above.)
7071 * Credit information has been moved from source file headers into CREDITS.
7072 * Source file headers have been made more standard.
7073 * The CASE macro now compiles without complaining even when it has
7076 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7078 * (Note that the way that the PCL macroexpansions were rewritten
7079 to accommodate the change in DEFGENERIC below breaks binary
7080 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7081 not run under sbcl-0.6.2. Once we get out of alpha releases,
7082 i.e. hit release 1.0.0, we'll probably try to maintain binary
7083 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7084 and sbcl-1.4.4. Until then, however, it might be fairly common
7085 for maintenance releases to break binary compatibility.)
7086 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7088 * The reporting of unhandled signals has been changed to print some
7089 explanatory text as well as the report form. (Previously only
7090 the report form was printed.)
7091 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7092 it defines, so that the compiler no longer issues undefined function
7093 warnings for compiled-but-not-yet-loaded generic functions.
7094 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7095 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7096 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7097 section of the ANSI spec are supported.
7098 * The "" nickname for the "KEYWORD" package has been removed.
7099 The reader still handles symbol tokens which begin with a package marker
7100 as keywords, but it doesn't expose its mechanism for doing so in the
7101 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7102 * The system now issues STYLE-WARNINGs for contradictory TYPE
7103 proclamations. (Warnings for contradictory FTYPE proclamations would
7104 be nice too, but those can't be done usefully unless the type system
7105 is made smarter about FUNCTION types.)
7106 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7107 systematized, so that "*target-*.lisp is supposed to exist only on the
7108 target and imply that there's a related file which exists on the
7109 host, and *host-*.lisp is supposed to exist only on the host and imply
7110 that there's a related file which exists on the target. This involves a
7111 lot of renaming. Hopefully the acute confusion caused by the renaming
7112 will be justified by the reduction in chronic confusion..
7113 ** runtime-type.lisp -> early-target-type.lisp
7114 ** target-type.lisp -> late-target-type.lisp
7115 ** early-host-format.lisp -> early-format.lisp
7116 ** late-host-format.lisp -> late-format.lisp
7117 ** host-error.lisp -> misc-error.lisp
7118 ** early-error.lisp -> early-target-error.lisp
7119 ** late-error.lisp -> late-target-error.lisp
7120 ** host-defboot.lisp -> early-defboot.lisp
7121 ** code/misc.lisp -> code/target-misc.lisp
7122 ** code/host-misc.lisp -> code/misc.lisp
7123 ** code/numbers.lisp -> code/target-numbers.lisp
7124 ** code/early-numbers.lisp -> numbers.lisp
7125 ** early-host-type.lisp -> early-type.lisp
7126 ** late-host-type.lisp -> late-type.lisp
7127 ** host-typep.lisp -> typep.lisp
7128 ** load.lisp -> target-load.lisp
7129 ** host-load.lisp -> load.lisp
7130 ** host-disassem.lisp -> disassem.lisp
7131 ** host-insts.lisp -> insts.lisp
7132 ** byte-comp.lisp -> target-byte-comp.lisp
7133 ** host-byte-comp.lisp -> byte-comp.lisp
7134 ** host-signal.lisp -> signal.lisp
7135 ** host-defstruct.lisp -> defstruct.lisp
7136 ** late-target-type.lisp -> deftypes-for-target.lisp
7137 Furthermore, several other previously target-only files foo.lisp (e.g.
7138 hash-table.lisp and random.lisp) have been split into a target-and-host
7139 foo.lisp file and a target-only target-foo.lisp file, with their key type
7140 definitions in the target-and-host part, so that the cross-compiler will
7141 know more about target types.
7142 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7143 gone away. In their place are various *BACKEND-FOO* variables
7144 corresponding to the slots of the old structure.
7145 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7146 into the target SBCL has been fixed.
7147 * The chill.lisp system for loading cold code into a running SBCL
7149 * Support for the CMU CL "scavenger hook" extension has been removed.
7150 (It was undocumented and unused in the CMU CL sources that SBCL was
7151 derived from, and stale in sbcl-0.6.1.)
7152 * Various errors in the cross-compiler type system were detected
7153 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7154 (enabling various consistency checks). Many of them were fixed,
7155 but some hard problems remain, so the compiler is back to
7156 running without *TYPE-SYSTEM-INITIALIZED* for now.
7157 * As part of the cross-compiler type system cleanup, I implemented
7158 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7159 * I have started adding UNCROSS calls throughout the type system
7160 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7161 on cross-compiler input files will be able to go away, and various
7163 * CONSTANTP now returns true for quoted forms (as explicitly required
7166 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7168 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7169 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7170 (MAKE-LIST -1). In the longer term, it ought to become true
7171 that declarations are assertions even at SAFETY 1. For now, it's not
7172 quite true even at SAFETY 3, but it's at least more nearly true..
7173 (Note that this change seems to increases the size of the system by
7174 O(5%) and to decrease the speed of the compiler by 20% or more.)
7175 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7176 for the problem of printing dozens of lines of distracting information
7177 about low-level system machinery as part of the top stack frame
7178 on entry to the debugger when an undefined function was called.
7179 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7180 is not reset to COMMON-LISP-USER.
7181 * Compilation of stuff related to dyncount.lisp has been made conditional
7182 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7183 smaller. The various dyncount-related symbols have been moved into
7184 a new "SB-DYNCOUNT" package.
7185 * tty-inspect.lisp has been renamed to inspect.lisp.
7186 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7187 feature has gone away. (When we eventually port to other flavors of
7188 libc and/or Unix, we'll try to make the differences between flavors
7189 invisible at the user level.)
7190 * Various other *FEATURES* tags, and/or their associated conditionals,
7191 have been removed if obsolescent, or given better documentation, or
7192 sometimes given more-mnemonic names.
7194 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7196 * tidied up "make.sh" script
7197 * tidied up system directory structure
7198 * better "clean.sh" behavior
7199 * added doc/FOR-CMUCL-DEVELOPERS
7200 * many many small tweaks to output format, e.g. removing possibly-confusing
7201 trailing #\. character in DESCRIBE-INSTANCE
7202 * (EQUALP #\A 'A) no longer signals an error.
7203 * new hashing code, including EQUALP hashing
7204 * tidied up Lisp initialization and toplevel
7205 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7206 * command line argument processing
7207 * added POSIX-GETENV function to deal with Unix-ish environment variables
7208 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7209 terminating SBCL on EOF
7210 * non-verbose GC by default
7211 * There is no more "sbcl" shell script; the sbcl file is now the C
7212 runtime executable (just like CMU CL).
7213 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7215 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7216 symbol and package information as Lisp native symbol and package objects
7217 instead of strings naming symbols and strings naming packages. This way,
7218 whenever packages are renamed (as in warm init), debug information is
7219 transformed along with everything else.
7220 * tweaked the optimization policy declarations which control the building
7221 of SBCL itself. Now, among other things, the system no longer saves
7222 source location debugging information. (This helps two problems at once
7223 by reducing SBCL size and by keeping SBCL from trying to look for its
7224 sources -- which may not exist -- when reporting errors.)
7225 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7226 debugging and testing purposes
7227 * cleaned up printing, making the printer call PRINT-OBJECT for
7228 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7229 methods, giving nearly-ANSI behavior
7230 * converted almost all special variables to use *FOO* naming convention
7231 * deleted PARSE-TIME functionality, since it can be done portably
7232 * moved some files out of cold init into warm init
7233 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7235 * regularized formatting of source files
7236 * added an install.sh script
7237 * fixed ridiculous memory usage of cross-compiler by making
7238 compiler/alloc.lisp not try to do pooling unless it can hook
7239 itself into the GC of the cross-compilation host. Now the system
7240 builds nicely on my old laptop.
7241 * added :SB-ALLOC in target-features.lisp-expr
7242 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7243 was not implemented)
7244 * re-did condition handling and note reporting in the compiler. Notes
7245 are no longer handled by signalling conditions. Style warnings
7246 and warnings are handled more correctly and reported in such a way
7247 that it's easy to find one or the other in your output (so that you
7248 can e.g. figure out which of many problems caused COMPILE-FILE to
7250 * changed the severity of several compiler warnings from full WARNING
7251 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7252 compiler note reporting so that it doesn't use the condition system
7253 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7254 COMPILE-FILE command)
7255 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7256 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7257 no longer supported, since their implementation was deeply intertwingled
7258 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7259 * removed bogus "support" for compiler macros named (SETF FOO), and
7260 removed the compiler macro for SETF INFO (but only after making a fool
7261 of myself on the cmucl-imp mailing list by posting a bogus patch for
7262 DEFINE-COMPILER-MACRO..)
7263 * Compiled files containing forms which have side effects on the Lisp
7264 reader (such as DEFPACKAGE forms) are now handled more correctly.
7265 (Compiler queuing of top level lambdas has been suppressed by setting
7266 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7267 * deleted various currently-unused source files, e.g. gengc.lisp. They
7268 may be added back at some point e.g. when porting to other architectures,
7269 but until they are it's distracting to distribute them and to try to
7271 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7272 there were so many of them they're just distractions, and UNCROSS is
7273 known to be able to handle the current sources
7274 * moved PROFILE functionality into TRACE, so that it will be clear
7275 how the wrapping and unwrapping of functions when you profile them
7276 interacts with the wrapping and unwrapping of functions when you
7277 trace them. (Actually, the functionality isn't there yet, but at least
7278 the interface specification is there. Hopefully, the functionality will
7279 arrive with some future maintenance release.)
7280 * removed host-oops.lisp
7281 * changed signature of QUIT function to allow UNIX-CODE argument
7282 * fixed READ-SEQUENCE bug
7283 * tweaked verbose GC output so that it looks more like the progress
7284 output that ANSI specifies for functions like LOAD
7285 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7286 * added <http://sbcl.sourceforge.com> to the banner information printed by