1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.2.10:
3 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
4 which any part is unrecognizable as a legal type-specifier.
5 The dispatch table will be altered, but the new entry is disabled.
6 Subsequent type-defining forms will cause pprint-dispatch tables to
7 re-examine whether any disabled entries should be enabled. (lp#1429520)
8 * enhancement: Loading code containing calls to a deprecated function will,
9 under most circumstances, signal warnings similar to compiling such code.
10 The usual caveat holds about not detecting calls through a computed name,
11 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
12 * enhancement: (SB-EXT:COMPILE-FILE-POSITION) is a new macro that expands
13 to a constant (VALUES integer integer) indicating the source line/column
14 from which it was read, intended for logging Lisp runtime errors in
15 a style similar to that afforded by the C preprocessor __LINE__ macro.
16 * bug fix: functions in :FINAL deprecation have the correct docstring.
17 No visible change, as no such functions presently exist. (lp#1439151)
18 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
19 if OTHER names either a macro or special-operator. (lp#1439921)
21 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
22 * minor incompatible change: all SOCKINT::WIN32-* functions have been
23 deprecated with EARLY deprecation state
24 * minor incompatible change: performing introspection via the system-internal
25 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
26 a function, as it always was before. (Affects swank-fancy-inspector)
27 * enhancement: The value of SXHASH on bit-vectors of length equal to the
28 word size now depends on the vector's contents instead of being constant;
29 its value on bit-vectors of length divisible by the word size now depends
30 also on the contents of the vector's last word.
31 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
33 * bug fix: A new dead code elimination phase removes dead code loops
34 that confuse stack analysis. (lp#1255782, lp#308914)
35 * bug fix: A toplevel form which was simple enough to bypass the main
36 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
37 would produce an invalid fasl file. (lp#1427050)
38 * bug fix: The compiler no longer signals an internal error when
39 encountering invalid FUNCTION forms like (function 1)
40 * bug fix: express proper dependencies in the ASDF contrib, to support
41 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
44 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
45 * minor incompatible change and bug fix: unboxed numeric constants
46 on x86oids are arranged in memory differently, and the disassembler
47 does not show them separately in DISASSEMBLE, but does
48 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
49 * optimization: The compiler's treatment of type specifiers makes
50 it slightly faster and more memory-efficient. Portable code
51 should be indifferent to this change, however, users of
52 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
53 and (MEMBER NIL T) are both internally collapsed to the former,
54 so that the latter can never be obtained as part of an FTYPE.
55 * optimization: a TYPEP call in which the second argument is not a
56 QUOTE form but nevertheless recognized as a compile-time constant
57 might open-code the test. One scenario for this involves backquote,
58 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
59 deferring until runtime should declare (NOTINLINE TYPEP).
60 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
61 code requiring delayed evaluation could be unportable though.]
62 * enhancement: unused variables at the top-level are now reported.
64 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
66 * bug fix: compiler no longer signals an error when compiling certain
67 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
68 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
69 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
70 lp#1412881, lp#945261, lp#1419205, lp#1409402)
71 * bug fix: files larger than 4GB can now be compiled.
72 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
73 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
74 * bug fix: callbacks from foreign threads can work without enabling
76 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
78 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
79 * bug fix: compiler no longer fails to dump a multidimensional array
80 constant involving a circular reference to itself
81 * bug fix: conditional and nested DX allocation no longer confuse the
82 compiler in STACK analysis. (lp#1044465)
83 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
85 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
86 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
87 * enhancement: backtrace for invalid argument count produces the exact
88 supplied arguments including the extra ones, on x86, x86-64 and ARM.
89 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
90 are used before the structure is defined; similarly for the predicate.
91 * optimization: FORMAT NIL with only ~a and string arguments is transformed
93 * optimization: POSITION and FIND when inlined into code that is compiled
94 with qualities of safety < 2 and speed > space will no longer signal
95 an error on circular lists, but will potentially loop forever if given
96 no :END constraint. As was always the case, calls that are not inlined
97 are safe regardless of lexical policy.
98 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
99 no longer cause debugger failure when printing a backtrace
100 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
101 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
102 did not work, and now it does.
104 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
105 * optimization: returning constant values refers to preboxed constants
106 more reliably. (lp#1398785)
107 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
108 for a function after at least one ordinary (not inlined) call to that
109 function was compiled, indicating a likely compilation order problem.
110 Likewise a warning ensues if a call is compiled to a function
111 that is subsequently proclaimed INLINE.
112 * enhancement: always lose() when something goes wrong while saving a core
113 (instead of just printing an error on stderr in some situations).
114 * enhancement: frames in the debugger are now restartable by default.
115 * bug fix: restore error handling on Windows x86.
116 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
117 at compile-time when possible. (lp#330299)
118 * bug fix: parsing of malformed type specifiers no longer results
119 in a memory-fault-error.
120 * bug fix: LOOP properly destructures nested lists in WITH.
121 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
122 longer signals the wrong error.
123 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
125 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
126 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
127 select() if the OS has the former. Previously poll() was used
128 only if waiting on exactly one file descriptor.
129 * enhancement: efficiency of access to untagged structure slots is improved
130 on x86-64, and the order of slots in memory is exactly as specified by
131 defstruct, simplifying use of structures as arguments to foreign calls.
132 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
134 * bug fix: GC memory corruption during internal memory handling.
135 * bug fix: duplicate effective-slot-definition objects as compared
136 by EQ on name could be present in CLASS-SLOTS of a class whose
137 metaclass was structure-class or condition-class. (lp#1049423)
138 * bug fix: HANDLER-BIND with empty bindings works again; regression in
140 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
142 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
143 (member #\a #\c). (lp#1392068)
144 * bug fix: READ sometimes accidentally preserved a whitespace character
145 after a token when it should not have. (lp#327790)
147 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
148 * enhancement: sb-bsd-sockets now has basic support for IPv6
149 * enhancement: An sb-unicode package has been added, containing
150 many functions related to handling Unicode text
151 * enhancement: The reader now normalizes symbols to Normalization
152 Form KC (NFKC). This behavior can be disabled with
153 SB-EXT:READTABLE-NORMALIZATION
154 * enhancement: a style-warning is signaled if OPTIMIZE declarations
155 multiply specify a quality with differing values. (lp#310267)
156 * bug fix: conservatively pointed to pages wipe out unused dwords so
157 that they cannot act as false roots in turn.
158 * bug fix: the walker's handling of lexical variable and symbol-macro
159 bindings is improved (lp#375326, lp#1368305)
160 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
161 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
162 * bug fix: in interpreted code, inequality predicates did not type-check
163 arguments that weren't examined, and a 1-argument use of MIN or MAX
164 accepted a complex number. (lp#1373702)
165 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
166 (lp#1364413, thanks to Zach Beane)
168 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
169 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
170 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
171 SEQUENCE:MERGE respectively when the specified result type designates an
173 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
175 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
176 universal superclass (lp#1332983)
177 * bug fix: reading an uninterned symbol whose print name has the
178 syntax of an integer signals an error. (lp#310062)
179 * bug fix: the walker is less likely to be confused when walking LET* forms
180 with special bindings and use of those bindings and others of the same
182 * bug fix: a rare bug affecting 32-bit platforms resulting in a
183 fatal condition with the message "Globaldb rehash failure" has been fixed.
185 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
186 * enhancement: DOCUMENTATION works on instances of
187 FUNCALLABLE-STANDARD-CLASS
188 * enhancement: ASSERT reports arguments of calls to lexical functions in
189 additional to global functions.
190 * enhancement: ASDF updated to 3.1.3
191 * enhancement: UIOP can be loaded without ASDF.
192 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
193 before accessing its class-precedence list.
194 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
196 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
197 class is a FORWARD-REFERENCED-CLASS.
198 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
199 which initargs have been supplied.
200 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
202 * bug fix: macroexpanding a backquoted expression involving ",."
203 outside of the compiler failed. (lp#1354623)
205 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
206 * incompatible change: the #\` ("backquote") reader macro was reimplemented
207 to support robust pretty-printing. Reading a form involving #\` produces
208 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
209 that are not lists. Code that unportably attempts operations on
210 un-evaluated forms resulting therefrom, e.g.
211 (SUBST a b (read-from-string "`(x (,y))"))
212 might generate incorrect results and/or errors.
213 * enhancement: support for GNU/kFreeBSD x86.
214 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
215 and DEFGLOBAL variables of type fixnum.
216 * enhancement: arithmetic constant reduction is now performed on defconstant
217 constants too. (lp#1337069).
218 * bug fix: certain ftype proclamations containing &optional t &rest t no
219 longer cause subsequent definitions to signal bogus style-warnings.
220 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
221 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
224 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
225 * enhancement: GENCGC is enabled on ARM.
226 * enhancement: better error reporting for invalid calls to local functions.
227 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
229 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
231 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
233 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
235 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
236 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
237 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
239 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
240 lp#700538, lp#613876, lp#695286, lp#798388)
241 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
242 * bug fix: array type intersection handles T and unknown element types
243 correctly. (lp#1258716)
244 * bug fix: fix a corner case in array type unparsing that would result in
245 misleading translations from our internal type representation.
246 * bug fix: array-rank now sees through union and intersection types.
248 * bug fix: when DECLARE expressions are in the wrong place, be careful not
249 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
251 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
252 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
253 instead of signaling an error. (lp#1095483)
254 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
255 used to (rarely) introduce duplicate conflict markers in a single
256 TN/block pair. (lp#1327008)
258 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
259 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
260 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
261 report of the signaled conditions lists currently running threads.
262 * enhancement: ported to ARM linux.
263 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
264 * enhancement: new contrib sb-mpfr by Stephan Frank.
265 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
266 (lp#1315846, thanks to Mark Cox)
267 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
268 function-designator to a function only as needed. (lp#1012335)
269 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
270 thanks to Thomas Hlavaty)
271 * bug fix: handle --without-xxx options to make.sh more carefully.
272 (lp#1246665, thanks to Richard M Kreuter)
273 * bug fix: prevent maybe-delete-exit from doing semantically broken things
274 with local exits. (lp#309099, lp#518099, lp#533930)
275 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
278 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
279 * optimization: COERCE is now more effecient for more cases when the type is
280 known at compile-time.
282 * bug fix: correctly inherit condition initforms. (lp#1300904)
283 * bug fix: properly pprint literal functions inside nested lists.
285 * bug fix: more-correctly handle array-type unity (broken for ages, causing
286 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
287 reported by jasom in #lisp).
289 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
290 * enhancement: printing backtraces respects
291 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
293 * optimization: defstruct out-of-line accessor are now as fast as inlined.
295 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
296 instances with a test-function (reported by Vivitron in #sbcl)
297 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
298 * bug fix: Change COND error message (lp#1254511)
299 * bug fix: LOAD is no longer confused when called on a directory.
301 * bug fix: MAKE-CONDITION reports names of missing condition classes
302 properly (lp#1199223)
303 * bug fix: restore building with clang. (lp#1293643)
304 * bug fix: restore building on SPARC (broken since 1.1.15).
305 * bug fix: improved FreeBSD support.
306 * bug fix: PPC floating point conversion corrupted stack.
308 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
309 * minor incompatible change: improve read/print consistency for pathnames on
310 Win32, by using the circumflex character #\^ as the escape character.
312 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
313 * enhancement: Loading fasls with symbols from an undefined package includes
314 the name of the symbol in the error message.
315 * bug fix: problems when redefining classes and doing TYPEP on classes
316 concurrently. (lp#1272742)
317 * bug fixes to the x86-64 XCHG instruction:
318 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
320 ** it was misencoded when used to exchange EAX with itself.
321 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
322 32- and 16-bit variations as NOP.
323 * bug fix: the disassembler outputs source annotations in the right place
324 and no longer randomly drops some of them. (lp#1249205)
325 * bug fix: fix commutative-arg-swap from introducing undumpable structures
326 into code, prevent code with errors from being compiled. (lp#1276282)
327 * bug fix: pathnames with :back in their directory component are succeffully
329 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
330 wrap functions around. (lp#309086)
332 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
333 * new feature: the iterative spilling/coloring register allocator developed
334 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
335 in. By default, it only activates for functions that optimize with
336 (speed 3) and (> speed compilation-speed), but setting
337 sb-regalloc:*register-allocation-method* to :iterative forces its
338 execution. The previous behaviour can be obtained by instead setting that
339 variable to :greedy. Thanks again to Google for their support, and, more
340 crucially, to Alexandra Barchunova for her hard work.
341 * optimization: make-array with known element-type and unknown dimensions is
343 * optimization: make-array with unknown element-type is faster as well.
345 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
346 :application-type argument, which can be :console or :gui. :gui allows
347 having GUI applications without an automatically appearing console window.
348 * enhancement: reduced conservativism on GENCGC platforms:
349 conservative roots must be valid-looking tagged pointers or point
350 within a code object, not merely point to within the allocated part
351 of a page, in order to pin a page.
352 * enhancement: support for "Mac Roman" external format.
353 * enhancement: encapsulation of named generic functions now happens without
354 altering the identity of the function bound to the name.
355 * bug fix: Windows applications without the console window no longer misbehave.
356 (patch by Wilfredo Velazquez, lp#1256034).
357 * bug fix: modular arithmetic optimizations do not stumble on dead branches
358 with bad constants. (reported by Douglas Katzman)
359 * bug fix: CLISP can be used again as a cross-compilation host.
360 (Thanks to Vasily Postnicov, lp#1261451)
361 * bug fix: run-program crashed with :directory nil. (lp#1265077)
363 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
364 * optimization: complicated TYPEP tests are less opaque to the type
365 propagation pass. (lp#1229340)
366 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
367 * optimization: EQUALP on structures with raw slots (double-float/complex)
368 no longer conses and is faster.
369 * optimization: RESTART-CASE expands to more compact code.
370 Thanks to Jan Moringen. (lp#1249055)
371 * enhancement: Top-level defmethod without defgeneric no longer causes
372 undefined-function warnings in subsequent forms. (lp#503095)
373 * enhancement: Better error messages for system errors on Windows.
374 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
375 Cushing. (lp#1249183)
376 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
377 specification (multiple integer arguments) and signals a continuable error
378 if the current SBCL version is lower (older) than the specification.
380 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
381 * bug fix: EQUALP now compares correctly structures with raw slots larger
383 * bug fix: contribs couldn't be built on Windows with MinGW.
384 * bug fix: Better pathname handling on Windows. (lp#922117)
385 * bug fix: OPEN reports a more meaningful error when an existing file is
386 opened for output with :if-exists :new-version. Thanks to Philip
387 Munksgaard. (lp#455381)
388 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
389 CLOS-related errors. (lp#633911)
390 * bug fix: GC deadlocks caused by concurrent consing on Windows.
392 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
393 * optimization: better distribution of SXHASH over small conses of related
395 * other improvements to SXHASH:
396 ** use the whole of the positive-fixnum range for SXHASH of fixnums
397 * enhancement: The error message when calling an undefined alien function
398 includes the name of the function on x86-64.
399 * enhancement: sb-ext:run-program now supports :environment on Windows.
400 * enhancement: ASDF is no longer required to load contribs at runtime.
402 * enhancement: when called with a symbol, FIND-RESTART no longer calls
403 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
404 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
405 clusters better in some cases
406 * enhancement: SOME/ANY/other quantification higher-order functions no
407 longer cons. (lp#1070635)
408 * bug fix: forward references to classes in fasls can now be loaded.
410 * bug fix: don't warn on a interpreted->compiled function redefinition
411 from the same location. (patch by Douglas Katzman, lp#1042405)
412 * bug fix: Create vectors of proper internal length when reading literal
413 vectors from FASLs. (Reported by Jan Moringen)
414 * bug fix: COMPILE can now successfully compile setf functions.
415 (Reported by Douglas Katzman)
416 * bug fix: run-program performs more correct escaping of arguments on
417 Windows. (lp#1239242)
418 * bug fix: function-lambda-expression on generic functions returns the
420 * bug fix: (the [type] [constant]) now warns when [constant] matches
421 [type] except for the number of values. (Reported by Nathan Trapuzzano
423 * bug fix: signal errors in required cases of slot-definition initialization
424 protocol. (lp#309072)
425 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
426 (thanks to Stelian Ionescu, lp#1242643)
427 * bug fix: when given a restart object, FIND-RESTART checks whether the
428 restart is active and, when a condition is supplied, whether the restart
429 is associated to a different condition (lp#774410)
431 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
432 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
433 shutdown(3). (thanks to Jan Moringen, lp#1207483)
434 * enhancement: document extensible sequences. (thanks to Jan Moringen,
436 * optimization: EQUAL and EQUALP transforms are smarter.
437 (thanks to Elias Martenson, lp#1220084)
438 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
439 * bug fix: probe-file now can access symlinks to pipes and sockets in
440 /proc/pid/fd on Linux. (reported by Eric Schulte)
441 * bug fix: SBCL can now be built on Solaris x86-64.
442 * bug fix: Floating point exceptions do not persist on Solaris anymore.
443 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
444 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
446 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
447 (thanks to Stephan Frank)
448 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
449 (thanks to Stephan Frank, lp#1206191)
450 * bug fix: sb-safepoint can now reliably handle signal interruptions of
451 foreign code. (lp#1133018)
452 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
453 constructors no longer fails to merge actual and default initargs
454 (thanks to Jan Moringen, lp#1179858)
455 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
456 constructors handles non-KEYWORD initialization arguments more correctly.
457 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
458 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
459 * bug fix: class definitions with CPLs inconsistent with their metaclasses
460 are less likely to destroy the object system's integrity. (lp#309076)
461 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
462 standard. (lp#1203585, thanks to Jan Moringen)
463 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
464 settings. (lp#1023721)
465 * bug fix: getting the order of arguments to
466 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
467 rather than a failed AVER. (reported by Paul Nathan)
468 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
469 arguments during copying on x86 and x86-64; it may still happen on other
470 platforms when there are more fixed arguments than stack slots.
471 (reported by Jan Moringen)
473 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
474 * enhancement: support building the manual under texinfo version 5.
476 * enhancement: Windows builds no longer display the "Kitten of Death" message.
477 A warning is instead appended to the regular banner, and may be muted with
478 --noinform. (lp#728247)
479 * enhancement: support building under new linker handling of syscalls under
480 NetBSD. (thanks to Robert Swindells)
481 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
482 (regression since 1.1.9)
483 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
484 compiler macro. (thanks to Douglas Katzman).
485 * bug fix: signal a warning when defining a setf-function when a
486 setf-expander is already present. (thanks to Douglas Katzman).
487 * bug fix: improved threading on PPC.
488 * bug fix: ROOM works again on Windows. (lp#1206456)
489 * bug fix: Streams were flushed even when there was one byte still left in
490 the buffer. (lp#910213)
491 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
492 either NIL or :ERROR. (reported by Jan Moringen)
494 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
495 * enhancement: ASDF has been updated to 3.0.2.
496 * optimization: stack frames are packed more efficiently on x86oids, which
497 ought to reduce the frequency of Methuselahn conservative references (it
498 certainly helps with gc.impure.lisp / BUG-936304 on x86).
499 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
500 recognized in modular arithmetic contexts, and compile to native negate,
501 rather than going through bignums only to keep the low bits.
502 * bug fix: Compiling potential modularic arithmetic forms does not cause type
503 errors when some integer types lack lower or upper bounds. (lp#1199127)
504 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
505 bitwidth before being used in a non-modular context. (lp#1199428)
506 * bug fix: Multiple catch/unwind blocks in a single function are now
507 allocated in the right stack order on win32. (lp#1072739)
509 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
510 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
511 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
512 * enhancement: disassemble now annotates some previously missing static
513 functions, like LENGTH.
514 * enhancement: clean.sh now also cleans doc/internals.
515 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
516 print a symbol with a package prefix.
517 * enhancement: The debugger and backtracing are more robust against buggy
518 PRINT-OBJECT methods.
519 * optimization: calls to static functions on x86-64 use less instructions.
520 * optimization: compute encode-universal-time at compile time when possible.
521 * optimization: when referencing internal functions as #'x, don't go through
522 an indirect fdefn structure.
523 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
524 * optimization: (mod fixnum) type-checks are performed using one unsigned
525 comparison, instead of two.
526 * optimization: enable more modular arithmetic transforms in the presence of
528 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
529 when the result is known to be negative.
530 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
531 * optimization: comparisons between rationals and constant floats or between
532 integers and constant ratios are now converted to rationals/integers at
534 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
535 * bug fix: problems with NCONC type derivation (reported by Jerry James).
536 * bug fix: EXPT type derivation no longer constructs bogus floating-point
537 types. (reported by Vsevolod Dyomkin)
538 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
539 addrinfo. (lp#1187041, patch by Jerry James)
540 * bug fix: uninitialized type-error conditions can now be printed.
542 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
543 listening, allowing several tests to run in parallel.
544 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
545 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
547 * bug fix: Specialised SIMD-PACK types can be negated.
548 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
549 reported by Eric Marsden)
550 * bug fix: FP return values from foreign calls are always rounded to single
551 or double float precision on x87.
552 * bug fix: Known-safe vector access on x86oids should not fail spuriously
553 when the index is of the form (+ x constant-positive-integer).
554 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
555 * bug fix: backtrace printer no longer tries to create very large lists when
556 the arg-count register is clobberred by other code. (lp#1192929)
557 * bug fix: x86 should never signal an FP exception while boxing an FP value,
558 a situation that lands us into ldb.
560 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
561 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
562 ROOM, plus a few SB-INTROSPECT functions) has been completely
563 rewritten; it may now exhibit different bugs than before.
564 * new feature: minimal runtime/compiler intrastructure support for SSE
565 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
566 feature :sb-simd-pack. This should enable intrinsics extensions as
567 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
568 for maintaining a branch for so long.
569 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
570 the working directory of the spawned process.
571 (lp#791800) (patch by Matthias Benkard)
572 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
573 stack-allocated on PPC.
574 * enhancement: "fixed objects" can now be stack-allocated on PPC.
575 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
576 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
577 also returns VOPs which do not translate any functions, and finds
578 defoptimizer types ir2convert and stack-allocate-result.
579 * enhancement: better type derivation for APPEND, NCONC, LIST.
581 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
582 heap in a manner similar to the GC rather than its previous ad-hoc
583 scheme, and is therefore no less and possibly more accurate.
584 * fixes and enhancements related to Unicode:
585 ** the character database information has been updated to Unicode 6.2;
586 ** support for canonical and compatibility decomposition of characters has
587 been added, along with support for primary composition;
588 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
589 NFKD) has been included;
590 ** querying the character database for code points not defined by Unicode
591 gives less wrong answers (lp#1178038, reported by Ken Harris)
592 * enhancement: print intermediate evaluation results for some ASSERTed
593 expressions. (lp#789497) (patch by Alexandra Barchunova)
594 * enhancement: x86-64 disassemblies are annotated with unboxed constant
595 values when there are references to (RIP-relative) unboxed constants.
596 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
597 of quadratically with the size of the input in the worst case.
599 * bug fix: handle errors when initializing *default-pathname-defaults*,
600 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
601 decoding errors, or directories being deleted.
602 * bug fix: Loading a core with a discontiguous dynamic space now correctly
603 computes the amount of dynamic space used.
604 * bug fix: disassembler missing ",8" on SHLD
605 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
606 that provide an "invalid" stack frame link for the signal handler
607 itself now use the saved-fp-and-pc mechanism to pick up from the stack
608 frame in the interrupt (signal) context. This is known to affect
609 threaded FreeBSD/x86-64.
610 * bug fix: some LOOP statements couldn't be compiled.
612 * bug fix: sb-sequence:dosequence works on literal vectors.
613 * bug fix: errors in generic arithmetic show the assembly routine's
614 caller on x86 and x86-64. (lp#800343)
615 * bug fix: Compile-time type errors should never result in COMPILE-FILE
617 * bug fix: Known bad local calls do not cause strange failures when
618 emitting or dumping code. (lp#504121)
619 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
620 codegen errors: type checks are inserted as necessary. (lp#1177703)
621 * bug fix: Unsigned modular arithmetic is correctly converted into signed
622 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
623 * bug fix: a combination of inlined local function with &optional and
624 recursion no longer causes undescriptive compiler errors. (lp#1180992)
625 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
626 when testing for non-zero-ness.
627 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
629 * bug fix: Type mismatch for the value of conditional expressions are
630 correctly reported when detected at compile-time, instead of complaining
631 about a constant NIL (similar for non-EQ-comparable catch tags).
632 * bug fix: Referring to INLINE global functions as values should not result
633 in a compilation failure. (lp#1035721)
634 * optimization: faster ISQRT on fixnums and small bignums
635 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
636 * optimization: On x86-64, the number of multi-byte NOP instructions used
637 for code alignment is now always minimal.
638 * optimization: On 64-bit targets, the compiler generates much faster
639 code for type checks for types known at compile time that are smaller
640 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
641 their COMPLEX variants.
642 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
643 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
644 * optimization: ROOM no longer conses so egregiously on non-x86oid
646 * optimization: associative bitwise operations reassociate patterns like
647 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
649 * optimization: quasiquote expressions now perform more constant folding,
650 instead of consing equal lists at runtime. (lp#1026439)
651 * optimization: local call analysis of inlined higher-order function
652 should converge more quickly, resulting in better code for complex
654 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
655 integer constants are handled more cleverly, especially when they
656 can be represented as sign-extended (signed-byte 32). (Based on a
657 patch by Douglas Katzman)
658 * optimization: IF/IF conversion should reliably result in sane code
659 when (some of) the results of the inner IF are always false or
661 * optimization: On x86oids, variable right shifts of machine words are
662 compiled into straight SAR/SHR, instead of going through the generic
665 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
666 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
668 * bug fix: :allocation slot option works for condition slots
670 * bug fix: redefining conditions does not lead to multiple evaluations of
671 hairy slot initfunctions anymore (lp#1164969)
672 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
674 * bug fix: function constants now work as initforms and default initarg
675 values of conditions (lp#539517)
676 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
677 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
678 * bug fix: no more bogus ## references when pretty printing backquoted
679 forms with non-trivial structure sharing. (lp#1161218)
680 * bug fix: Don't signal an error on (setf (documentation nil 'function)
681 "doc"). Signal a style-warning instead when trying to set documentation
682 of NIL for all other documentation types. (Reported by Zach
683 Beane; regression since 2e52fa05.)
684 * bug fix: modular arithmetic involving large constants and conditionals
685 should no longer result in spurious dead code elimination. (Reported by
687 * bug fix: our mach exception handler can seemingly called very early in
688 the program execution process on OS X 10.8.0. Try and handle that case
689 robustly, without potentially leaking mach ports too much.
690 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
692 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
693 * enhancement: the continuable error when defknown-ing over extant
694 fndb entries can be ignored by passing :overwrite-fndb-silently t
695 as a keyword argument to sb-c:defknown (after attributes). Useful
696 to allow defknown to be re-loaded. Use with :allow-other-keys t
697 for backward compatibility.
698 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
700 * bug fix: Prevent a make-array transform from modifying source forms
701 causing problems for inlined code. Thanks to Bart Botta.
702 (regression since 1.0.42.11-bis)
703 * bug fix: clear-output calls the correct gray stream routine,
704 sb-gray:stream-clear-output. (lp#1153257)
705 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
707 * bug fix: Better error messages for package operations (lp#1154776)
708 * bug fix: delete-package on a nonexistent package should signal a cerror.
709 (regression since 1.0.37.44).
710 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
711 (lp#1154946, lp#1072112)
712 * bug fix: compiling make-array no longer signals an error when the
713 element-type is an uknown type, a warning is issued instead.
714 Thanks to James Kalenius (lp#1156095)
715 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
716 produces wrong results for some inputs. (Thanks to Jan Moringen.)
719 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
720 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
722 * new feature: package local nicknames. See manual for details.
723 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
724 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
725 * enhancement: easier to use restarts for resolving name-conflicts
726 resulting from IMPORT, EXPORT, or USE-PACKAGE.
727 * enhancement: variant DEFPACKAGE forms now signal a full error with
728 restarts provided for resolving the situation. (lp#891351)
729 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
730 DEFPACKAGE forms can now signal a full error with restarts provided for
731 resolving the situation. See manual for details. (lp#891351)
732 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
733 (Thanks to Anton Kovalenko.) (lp#1102748)
734 * enhancement: backtrace improvements
735 ** secondary CLOS dispatch functions have better debug names (lp#503081)
736 ** easier to read method names in backtraces. See
737 SB-DEBUG:*METHOD-FRAME-STYLE*.
738 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
739 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
740 SB-DEBUG:BACKTRACE-AS-LIST.
741 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
742 information is available in less intrusive form as frame annotations.
743 * enhancement: SB-POSIX now provides MAP-ANON.
744 * enhancement: test-suite results are colorized, failures in red, unexpected
745 success in green. Works on Windows and on terminals with ANSI escape code
746 support. Can be disabled with --no-color.
747 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
748 (thanks to James M. Lawrence)
749 * bug fix: no more unused variable style warnings from RESTART-CASE
750 macroexpansion (lp#1113859)
751 * bug fix: no more unused variable style warnings when loading
752 sb-bsd-sockets.asd (lp#1114681)
753 * bug fix: deleting a package removes it from implementation-package
754 lists of other packages.
755 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
756 This does not fix the occasional "interrupt already pending" issue, though.
757 * bug fix: (setf (documentation 'x 'function)) and
758 (setf (documentation #'x t)) set documentation in different places.
759 (regression since 1.0.43.63)
760 * bug fix: build on newer glibc. (lp#1095036)
762 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
763 * optimization: LOOP expressions using "of-type character" have slightly
764 more efficient expansions.
765 * bug fix: very long (or infinite) constant lists in DOLIST do not result
766 in very long compile times or heap exhaustion anymore. (lp#1095488)
767 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
768 * bug fix: adjust-array ignored :initial-element for simple-vectors.
770 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
771 longer cause infinite loops (on circular data) or violate eqlity
772 constraints. (lp#1099708)
773 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
775 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
776 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
778 * enhancement: support for C-c to interrupt the foreground thread
779 on Windows. (Thanks to Anton Kovalenko.)
780 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
781 * enhancement: Safepoint builds on POSIX platforms can now optionally be
782 built without pseudo-atomic sequences and their run-time overhead.
783 * enhancement: Threads created outside of Lisp can enter Lisp through
784 alien callbacks and appear as Lisp threads for the duration of that
785 function invocation. On safepoint builds only.
786 * enhancement: Miscellaneous improvements to namestrings and underlying
787 calls to OS functions for file system access on Windows. (Thanks to
789 * enhancement: The MSI installer support for Windows now uses Windows
790 Installer XML at least version 3.5 and includes various usability
791 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
792 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
793 on Windows. (Thanks to Anton Kovalenko.)
794 * enhancement: The Windows backend now supports the x86-64 platform.
795 (Thanks to Anton Kovalenko.)
796 * bug fix: fasls are now once again directly executable (on platforms
797 supporting shebang lines, with a suitably-installed sbcl).
798 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
799 * bug fix: Fix CAS access to slots of direct instances of structure classes
800 in the presence of subclasses sharing the same conc-name.
801 * bug fix: Logical pathname namestrings on Windows have been changed to
802 be lower-case, to minimize differences between POSIX and Windows.
804 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
805 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
806 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
807 (NT 5.0) is no longer being maintained.
808 * notice: Starting with this version, SBCL on Windows no longer supports
809 building with disabled thread support.
810 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
811 * enhancement: New feature sb-dynamic-core allows the runtime to be
812 rebuilt or relocated without requiring changes to the core file on
813 all linkage table platforms. Required on Windows. (Thanks to Anton
815 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
816 * enhancement: I/O on Windows unnamed pipes is interruptible
817 asynchronously using interrupt-thread, timers when running on Windows NT
818 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
820 * enhancement: Support for the experimental safepoint-based stop-the-world
821 protocol on the PowerPC platform.
822 * bug fix: Non-blocking reads from the Windows console were not necessarily
823 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
824 * bug fix: stability of threads on Windows has been improved upon through
825 an updated stop-the-world protocol (thanks to Anton Kovalenko).
827 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
828 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
829 (COMPILE and COMPILE-FILE still do.)
830 * optimization: the SPARC backend now supports the precise generational
831 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
832 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
833 * enhancement: add experimental support for the SB-THREAD feature and the
834 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
835 Threads are enabled by default, and this version of SBCL is considered
836 to be the last and final release to officially support building with
838 * optimization: The compiler no longer rotates loops in some cases where
839 this transformation actually lead to worse code being generated.
840 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
841 symbol-macros by lexical bindings.
842 * bug fix: stack allocation was prevented by high DEBUG declaration in
844 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
845 (thanks to SANO Masatoshi)
846 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
847 :JUNK-ALLOWED was true.
848 * bug fix: type derivation inferred overly conservative types for
849 unions of array types. (lp#1050768)
851 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
852 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
853 source annotation of DISASSEMBLE output. Defaults to T.
854 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
855 WAIT-P argument added to WITH-RECURSIVE-LOCK.
856 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
858 * enhancement: Optional features (not enabled by default) allow the
859 use of signals for inter-thread synchronization to be reduced on certain
860 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
861 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
862 to test these experimental features. Known remaining bugs include minor
863 thread safety issues, less timely freeing of memory by GC, and certain
864 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
865 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
866 comparisons, particularly on almost-sorted inputs.
867 * bug fix: Reading floats with large exponents no longer takes too much time
868 before reporting that the exponent is too large.
869 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
870 correctly when the received datagram is larger than the provided buffer.
871 (lp#1023438, thanks to Robert Uhl)
872 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
873 a SYMBOL-VALUE form with a constant symbol argument.
874 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
875 into a DEFCAS defined place was used as the place.
876 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
877 for from bit-vectors.
878 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
879 lead to internal errors or crashes (lp#1058799).
880 * documentation: a section on random number generation has been added to the
883 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
884 * enhancement: implicit generic function warnings now specify the package
885 in which the new generic function is being created.
886 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
887 updates of CAS-able places (similar to Clojure's swap!).
888 * enhancement: run-program no longer decodes and re-encodes environment when
889 :environment argument is not provided. (lp#985904)
890 * enhancement: errors during compiler-macro expansion no longer cause
891 runtime errors, only a compile-time warning, otherwise behaving as if
892 the compiler macro had declined to expand.
893 * optimization: On x86-64, code alignment of block headers is done with
894 multi-byte NOPs now instead of repetitions of the single-byte NOP.
895 * optimization: MAP-INTO is substantially faster when the target sequence is
896 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
897 thanks to James M. Lawrence)
898 * optimization: the compiler no longer heap-conses to check exits in cases
899 where the exit function is dynamic extent, or when it can prove the exit
900 function cannot escape. (lp#1002534)
901 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
902 element type, and vectors that aren't SIMPLE-ARRAYs.
903 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
904 speed (around 1/3 the time in some cases), and a little better in terms of
905 comparison calls. (Thanks to Takeru Ohta)
906 * bug fix: On SPARC, a limitation on the number of code constants emittable
907 by the compiler has been lifted, allowing certain long functions to
908 compiled and assembled which had previously been unsupported; fixes
909 cl-bench on this ISA (lp#1008996).
910 * bug fix: potential for infinite recursion during compilation of CLOS slot
911 typechecks when dependency graph had loops. (lp#1001799)
912 * bug fix: error forms reported with some program-errors were not escaped
914 * bug fix: functions from EVAL are now on more equal footing with functions
915 from COMPILE. (lp#1000783, lp#851170, lp#922408)
916 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
917 objects as its :METHOD-COMBINATION argument, not just lists designating
918 method combinations. (lp#936513)
919 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
921 * bug fix: restore build on solaris/sparc. (lp#1008506)
922 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
923 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
924 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
925 as keyword arguments no longer accidentally match unevaluated symbols
927 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
928 parameter was zero, now it signals an error. (lp#905817, fixed since
930 * bug fix: run-program with :pty t no longer makes the pty as the process's
932 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
935 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
936 * RANDOM enhancements and bug fixes:
937 ** bug fix: the range and distribution of random integers could be
938 catastrophically wrong when the compiler derived the type of its
939 argument as a disjoint set of small integers.
940 ** bug fix: the distribution of random integers is now completely
941 uniform even when the specified limit is not a power of two.
942 (Previously some values could be about 0.1 % more probable than
943 others in the worst case.) (lp#309467)
944 ** RANDOM on large integer arguments is generally faster and conses
945 less than before; this is visible for fixnums above a length of
946 about 24 bits, but extremely so for bignums: the old implementation
947 used time and space quadratical in the size of the argument there,
948 the new one is linear.
949 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
950 main entry point, SB-EXT:QUIT is deprecated.
951 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
952 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
953 * enhancement: FASL loading no longer grabs the world-lock.
954 * enhancement: GENCGC reclaims space more aggressively when objects being
955 allocated are a large fraction of the total available heap space.
957 * enhancement: backtraces show the correct number of arguments for frames
958 called with too many arguments.
959 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
961 * enhancement: ASDF has been updated 2.21.
962 * optimization: fewer uses of full calls to signed modular functions.
964 * optimization: typechecking alien values is typically 5 x faster.
965 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
967 * bug fix: file compilation performance issues when dumping subtypes
968 of CHARACTER (lp#994487)
969 * bug fix: fixed disassembly of some SSE instructions on x86-64.
970 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
971 OPEN. (lp#969352, thanks to Kambiz Darabi)
972 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
974 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
975 classoid even if X was not the proper name of the class. (lp#941102)
976 * bug fix: declaration leakage between lexical environments due to careless
977 use of NCONC in MAKE-LEXENV. (lp#924276)
978 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
979 *default-pathname-defaults* contains NAME or TYPE components.
980 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
981 from CL package, e.g. (loop . 10).
982 * bug fix: run-program with existent or non-existent files for :output or
983 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
984 returns NIL instead of signalling an obscure error.
985 * bug fix: fix miscompilation of some logand forms with large constant
986 arguments. (lp#974406)
987 * bug fix: account for funcallable-instance objects properly in ROOM.
988 * bug fix: incorrect octets reported for c-string decoding errors.
990 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
992 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
993 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
994 allowing faster release of memory back to the OS. (lp#991293)
995 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
996 existing deadline for the dynamic scope of its body.
997 * bug fix: compiler-internal interval arithmetic needed to be more
998 conservative about open intervals when operated on by monotonic but not
999 strictly-monotonic functions. (lp#975528)
1000 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1001 it's also slightly faster. (lp#998926)
1002 * bug fix: better error messages for malformed declarations.
1004 * bug fix: define-condition didn't return the name of the defined condition.
1006 ** improved docstrings: REPLACE (lp#965592)
1008 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1009 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1010 could end up in the heap making GC unhappy.
1011 (Thanks to James Knight, lp#911027)
1013 ** SBCL can now be built using Clang.
1014 ** ASDF has been updated 2.20.
1015 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1016 * bug fix: don't complain about a too-hairy lexical environment for inlining
1017 when the function has never been requested for inlining. (lp#963530)
1019 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1020 * enhancements to building SBCL using make.sh:
1021 ** --fancy can be specified to enable all supported feature enhancements.
1022 ** --with-<feature> and --without-<feature> can be used to specify
1023 which features to build with.
1024 ** --arch option can be used to specify the architecture to build for.
1025 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1026 full-blows cross-compilation.)
1027 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1028 which allows specifying name of the default interning package for the
1030 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1031 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1032 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1033 null alien when malloc() fails. (lp#891268)
1034 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1035 conditions can be conveniently accessed through function with the same
1036 name, analogously to CONTINUE.
1037 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1038 from the printer by type, causing an error marker to be printed instead.
1039 (Thanks to Attila Lendvai)
1040 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1041 generally behave better when errors occur during printing.
1042 * enhancement: the test runner now takes a --report-skipped-tests argument
1043 to report the individual tests skipped as well as the number of skipped
1045 * enhancement: undefined functions now appear in backtraces as ("undefined
1046 function") instead of ("bogus stack frame") on x86oids.
1047 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1048 deadlock errors are reported in an easier-to-decipher manner.
1049 * enhancement: DESCRIBE on type designators reports the expansion in more
1051 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1052 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1053 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1054 * enhancement: better disassembly of segment-prefixes on x86 and other
1055 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1056 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1057 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1058 * optimization: SUBSEQ on vectors of unknown element type is substantially
1060 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1061 be stack-allocated. (lp#902351)
1062 * optimization: the compiler is smarter about representation selection for
1063 floating point constants used in full calls.
1064 * optimization: the compiler no longer refuses to coerce large fixnums to
1065 single floats inline, except on x86 where this limitation is still
1067 * optimization: truncation operations on integers with constant divisor
1068 arguments 1 and -1 are optimized away.
1069 * bug fix: deadlock detection could report the same deadlock twice, for
1070 two different threads. Now a single deadlock is reported exactly once.
1071 * bug fix: interval-arithmetic division during type derivation did not
1072 account for signed zeros.
1073 * bug fix: compiler error when typechecking a call to a function with
1074 non-constant keyword arguments.
1075 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1076 * bug fix: condition slot accessors no longer cause undefined function
1077 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1078 form that defines them. (lp#896379)
1079 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1080 by ANSI. (lp#894202)
1081 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1082 bogusly report NIL, T.
1083 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1084 required arguments ignored and performed assignments to others.
1086 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1087 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1088 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1089 * bug fix: redefining a function whose previous definition contained an
1090 unknown type no longer causes a style-warning. (lp#806243)
1091 * bug fix: undefined functions now appear in backtraces as ("undefined
1092 function") instead of ("bogus stack frame") on non-x86oids.
1093 * bug fix: backtraces are no longer cut off at ("undefined function") when
1094 called under certain circumstances (involving a caller-allocated stack
1096 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1097 systems. (regression since 1.0.53)
1098 * bug fix: GC deadlocks from dladdr() on certain platforms.
1099 * bug fix: broken standard streams no longer automatically cause recursive
1100 errors on debugger entry.
1101 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1102 (regression since 1.0.53)
1103 * bug fix: attempts to stack allocate a required argument to a function with
1104 an external entry point caused compiler-errors.
1105 * bug fix: compiler notes for failed stack allocation for a function argument
1106 no longer claim to be unable to stack allocate the function.
1107 * bug fix: COERCE now signals a type-error on several coercions to
1108 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1109 * bug fix: missing failure-to-stack-allocate compiler notes for some
1110 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1111 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1113 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1115 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1116 * minor incompatible changes:
1117 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1118 instead of the link.
1119 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1120 directory, but now signal an error instead. Use TRUENAME to resolve the
1121 pathname if you wish to delete the linked directory, and DELETE-FILE if
1122 you wish to delete the
1123 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1124 symbols associated with it will trigger a compile-time warning.
1125 * thread-related enhancements:
1126 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1127 Many thanks to generous donors!)
1128 ** Threading is now more reliable on non-Linux platforms. We still don't
1129 consider threads on non-Linux platforms good enough to enable them by
1130 default, but they're in a clearly better shape now.
1131 ** Deadlines supported now on all platforms.
1132 ** All blocking functions in the threading API now have a :TIMEOUT
1134 ** Semaphore notification objects have been added to SB-THREAD.
1135 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1136 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1137 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1138 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1139 using an API anologous to defining new SETFable places.
1140 * GC-related enhancements and bug fixes:
1141 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1142 and Gb suffixes. Default is megabytes as before.
1143 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1144 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1145 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1146 new defaults are in place to prevent hitting swap on low-end systems.
1147 Use build-time option --dynamic-space-size to build an SBCL with
1148 another default, or the runtime option to adjust the size at startup: a
1149 good size is at most equal to the amount of physical memory the system
1151 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1153 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1154 refuses to create SIMPLE-FUN objects.
1155 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1157 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1158 validation of pointer objects as GENCGC does, instead of a
1159 comparatively weak bounds-check against the heap spaces.
1160 * SB-BSD-SOCKETS bug fixes:
1161 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1162 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1163 systems with getaddrinfo().
1164 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1165 safe outside systems with getaddrinfo().
1166 * enhancement: ASDF has been updated 2.019.
1167 * enhancement: special-case TCO prevention for functions which never return
1168 extended to untrusted types, keeping one more frame's worth of debug
1169 information around in many cases.
1170 * enhancement: debug-names of anonymous and local function are more
1171 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1172 * enhancement: on win32, ABS of complex floats guards better against
1173 overflows. (lp#888410)
1174 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1175 process exiting with code 1. (lp#676987)
1176 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1177 the system where on the filesystem the SBCL sources themselves are
1178 located. (Thanks to Zach Beane)
1179 * enhancement: the compiler is now able to derive tighter bounds for
1180 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1181 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1182 correctly, even on wide-fixnum builds. (lp#887220)
1183 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1184 resolved to directories.
1185 * bug fix: type mismatch when assigning to lexical variables no longer
1186 result in fasl-dumping internal type objects. (lp#890750)
1187 * bug fix: type mismatch on (SETF AREF) and function return values no
1188 longer result in fasl-dumping internal type objects.
1189 * bug fix: With several combinations of argument types, for example (EXPT
1190 <integer> <(complex double)>), EXPT now uses double-precision throughout
1191 instead of partially calculating only to single-precision. (lp#741564;
1192 thanks to Lutz Euler)
1193 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1194 objects when interrupted by GC on PPC.
1196 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1197 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1198 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1199 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1200 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1201 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1202 targets is now 63 bits (up from 61).
1203 * enhancement: DESCRIBE now reports a lambda-list and source location
1204 for complext setf-expanders.
1205 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1206 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1207 of multiple-valued places to be set to NIL, instead of signalling an
1208 error (per a careful reading of CLHS 5.1.2.3).
1209 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1210 * bug fix: repair crash in x86oid darwin signal handling emulation
1211 when built with certain compilers.
1212 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1213 rotation arguments on x86-64. (lp#882151)
1214 * bug fix: low-level control flow optimisations could result in bogus
1215 code in functions with tail and non-tail calls to local functions on
1216 x86oids. (lp#883500)
1217 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1218 to emit literal characters > (code-char 4095), for comparisons with
1219 constant characters.
1220 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1221 on 64 bit platforms. (lp#881445)
1222 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1223 delete the wrong file when using relative pathnames. (lp#882877)
1224 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1225 sequences and :KEY NIL.
1227 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1228 * enhancement: ASDF has been updated to version 2.017.
1229 * enhancement: the --core command line option now accepts binaries with
1231 * enhancement: when built with :sb-core-compression, core files (regular
1232 or executable) can be compressed with zlib. Use the :COMPRESSION
1233 argument to SAVE-LISP-AND-DIE to specify a compression level.
1234 * enhancement: --[no-]merge-core-pages determines whether the runtime
1235 hints the operating system that identical core pages between SBCL
1236 processes should share the same physical memory. Default is to only
1237 enable this for compressed cores.
1238 * optimization: SLEEP no longer conses.
1239 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1240 or bit-vectors when using the standard pretty-print dispatch table.
1241 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1243 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1244 AREF, CHAR, etc. (lp#826971)
1245 * bug fix: compiler-errors causes by integer arguments with composed of
1246 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1247 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1248 expressions. (lp#770184)
1249 * bug fix: complex single float literals are correctly aligned when used
1250 as arguments of arithmetic operators.
1251 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1252 fixnum is correct. (reported by Peter Keller)
1253 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1254 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1256 * bug fix: redefining classes such that slots with custom allocation are
1257 added or removed works again.
1259 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1260 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1261 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1262 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1263 * enhancement: added support for socket keepalive timeout intervals
1264 and probe counts on Linux.
1265 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1266 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1267 * enhancement: added new toplevel options --quit and --non-interactive
1269 * enhancement: the Windows port of SBCL now builds and runs on Wine
1270 (thanks to Anton Kovalenko).
1271 * enhancement: more, and more correct, SSE instruction definitions on
1272 x86-64 (thanks to Alexander Gavrilov).
1273 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1274 to help the processor execute spin loops, when applicable. Currently
1275 implemented for x86 and x86-64.
1276 * optimization: unsigned integer divisions by a constant are implemented
1277 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1278 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1279 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1280 instructions. (lp#814688)
1281 * bug fix: COERCE to unfinalized extended sequence classes now works.
1282 (reported by Jan Moringen; lp#815155)
1283 * bug fix: a compiler error during typecheck generation, reported by Eric
1284 Marsden. (lp#816564)
1285 * bug fix: obsolete instance protocol fires when shared slots are added
1287 * bug fix: fixed-format floating point printing with scaling factors.
1289 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1290 backtraces. (lp#818460)
1291 * bug fix: better backtraces for interrupted syscall frames on x86.
1293 * bug fix: SSE comparison instructions can be disassembled even when one
1294 operand is in memory. (lp#814702)
1295 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1296 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1297 type information associated with the VALUES form.
1298 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1300 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1301 first write (lp#561642).
1302 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1303 * bug fix: bound propagation involving conversion of large bignums to
1304 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1306 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1307 functions; reported by Lutz Euler (lp#826459).
1308 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1311 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1312 * enhancement: errors from FD handlers now provide a restart to remove
1313 the offending handler.
1314 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1316 * enhancement: location of user or system initialization file can now easily
1317 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1318 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1319 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1320 the thunk, as a keyword argument, :arguments.
1321 * enhancement: constraint propagation is simplified (and sped up) when
1322 COMPILATION-SPEED > SPEED.
1323 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1324 * enhancement: debugger understands &MORE arguments better.
1325 * optimization: extracting bits of a single-float on x86-64 has been
1326 optimized. (lp#555201)
1327 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1328 when (> SPEED SPACE).
1329 * optimization: local call trampolines (x86 and x86-64) are emitted
1331 * optimization: implicit value cells for dynamic-extent closed-over bindings
1332 on x86 and x86-64 can hold unboxed values as well.
1333 * meta-optimization: improved compilation speed, especially for large
1334 functions. (lp#792363 and lp#394206)
1335 * bug fix: bound derivation for floating point operations is now more
1336 careful about rounding possibly closing open bounds. (lp#793771)
1337 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1338 backwards incompatible change in 1.0.48.27)
1339 * bug fix: occasional debugger errors in when a type-error occured in a
1340 function with dynamic-extent &rest list.
1341 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1342 boa-construtors can be used to initialized structure slots.
1343 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1344 (lp#795705, regression)
1345 * bug fix: DIRECTORY works better on logical pathnames.
1346 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1347 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1348 * bug fix: the compiler no longer constant-folds NaNs in
1349 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1350 * bug fix: FORMAT now handles floating point rounding correct, eg.
1351 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1353 * bug fix: style warning during lambda-list introspection of generic
1354 functions with both optional and key argments.
1355 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1356 folding. (lp#729765)
1357 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1360 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1361 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1362 interrupts for its body.
1363 * enhancement: source locations are now available for files loaded as
1364 source, compile-time-too evaluation, and initialization files.
1365 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1366 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1367 when a temporary file is used for compilation.
1368 * enhancement: ASDF has been updated to version 2.015.3.
1369 * enhancement: backtraces involving frames from the default evaluator are
1371 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1373 * enhancement: more informative compile-time warnings and runtime errors for
1374 type-errors detected at compile-time.
1375 * enhancement: deadlock detection for mutexes and spinlocks.
1376 * enhancement: dynamic-extent for &rest lists stack allocate only their
1377 spines, not their argumets. While portable code should not rely on this,
1378 particularly in combination with inlining, it should make dynamic-extent
1379 easier to use safely.
1380 * enhancement: SB-POSIX improvements:
1381 ** WNOHANG and WUNTRACED are exported.
1382 ** SYSCALL-ERROR now also provides the name of the failing system call.
1383 * enhancement: --script improvements:
1384 ** errors on standard input, output, and error streams are handled and
1385 cause scripts to exit silently, making them easier to use in shell
1387 ** backtraces from scripts now go to standard error instead of the
1388 terminal even if one is available.
1389 ** --script can be an argument, causing the script to be loaded from
1391 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1392 strings to foreign memory.
1393 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1394 a file, making it easier to understand heap dynamics.
1395 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1396 allows the compiler to automatically elide rest-list allocation so long as
1397 the call sites are in functions that the compiler knows cannot escape.
1399 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1400 especially in safe code when none of the required arguments have changed
1402 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1403 uninterruptible, as well as blocking reads from socket streams created
1404 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1405 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1406 from the to-char if the from-char is not a dispatch-macro character.
1407 * bug fix: references to undefined variables in function calls that are
1408 optimized away now signal a runtime error. (lp#722734)
1409 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1410 types from a function defined in the same file. (regression from
1412 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1414 * bug fix: spurious errors during QUIT when standard streams were closed.
1416 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1417 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1418 years, is now no longer supported.
1419 * enhancement: read() and write() have been added to SB-POSIX.
1420 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1421 accurately, allowing better typechecking of call-sites.
1422 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1423 are no longer caught. (reverted to pre 1.0.34 behaviour)
1424 * optimization: slightly faster ISQRT. (lp#713343)
1425 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1426 * bug fix: TRACE behaves better when attempting to trace undefined
1427 functions. (lp#740717)
1428 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1429 to (FUNCALL #'(LAMBDA ...) ...).
1430 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1431 a compile-time error. (lp#720382)
1432 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1434 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1435 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1436 optimization. (regression from 1.0.45.18/1.0.46.15)
1437 * bug fix: package locks did not protects against compile-time side-effects
1438 of DEFUN. (lp#675584)
1439 * bug fix: --dynamic-space-size argument is validated more carefully.
1441 * bug fix: memory fault from printing a malformed simple-condition.
1443 * bug fix: redefining classes so that slot-definition classes change now
1444 engages the obsolete instance protocol. (lp#766271)
1445 * bug fix: constant improper lists could break source coverage recording.
1447 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1448 could exhaust stack.
1450 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1451 * bug fix: fix mach port rights leaks in mach exception handling code on
1452 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1454 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1455 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1456 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1457 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1458 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1459 processed using EVAL -- now the appropriate toplevel form is reported instead.
1460 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1461 declarations. (lp#726331)
1462 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1463 that NIL/NULL is excluded from the type.
1464 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1466 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1467 and its compatriots.
1468 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1469 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1470 stack-allocated values out of their dynamic-extent. (lp#310175)
1471 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1472 x86-64 builds caused a type-error.
1473 * bug fix: calling COMPILE with something else than a lambda-expression as the
1474 second argument reports a more sensible error. (lp#718905)
1475 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1476 are detected. (lp#520607)
1477 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1479 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1480 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1481 methods. (regression from 1.0.45.18)
1482 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1483 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1484 * bug fix: several foreign functions accepting string also accepted NIL and
1485 consequently caused a memory fault at 0 now signal a type-error instead.
1487 * bug fix: under rare circumstances, constraint propagation could rewrite a
1488 variable reference to refer to a variable not in scope, causing an error
1489 during physical environment analysis when attempting to close over the
1490 variable. (lp#551227)
1491 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1493 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1494 * enhancement: largefile support on Solaris.
1495 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1496 arguments (lp#710017)
1497 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1498 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1500 * optimization: ERROR and CERROR are approximately 5 times faster.
1501 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1502 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1503 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1504 up instance creation in those cases.
1505 * optimization: arithmetic operations with multiple constant arguments in now
1506 have them reduced at compile-time. (lp#676414)
1507 * optimization: determining current character position on string-streams for
1508 pretty-printing was overly slow.
1509 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1510 lifetime analysis to overwrite closed-over variables (lp#681092).
1511 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1512 were not handled correctly (lp#713063).
1513 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1515 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1516 mistake. (lp#667297).
1517 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1518 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1519 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1520 unintern the wrong symbol with the same name. (lp#693796)
1521 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1522 making it possible to restore the initial table if it has been messed up.
1525 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1526 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1527 Refer to documentation for details.
1528 * enhancement: ASDF has been updated to version 2.010.
1529 * optimization: mutated closed-over variables that are only accessed by
1530 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1531 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1532 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1533 * optimization: UNWIND-PROTECT cleanup functions are now declared
1535 * bug fix: backtracing function with &REST arguments now shows the full
1536 argument list. (lp#310173)
1537 * bug fix: return types for functions with complex lambda-lists are now
1538 derived properly (lp#384892)
1539 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1540 long string arguments slowed the compiler down to a crawl.
1541 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1542 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1543 in the DEFMETHOD body.
1544 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1545 messages, being instead replaced with the corresponding function name.
1546 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1547 operators. (lp#309448)
1549 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1550 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1551 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1552 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1554 * enhancement: default dynamic-space size can be configured at build-time
1555 without touching source, using the --dynamic-space-size argument to make.sh.
1556 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1557 qualities, and mentions ALWAYS-BOUND declarations.
1558 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1560 * enhancement: ASDF has been updated to 2.009.
1561 * enhancement: the system detects known type-erros in calls better,
1562 signalling a full warning about violated proclaimed FTYPEs and violations
1563 of derived FTYPEs within the same file, including self-calls.
1564 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1565 * optimization: constant-folding exploits numeric and character types, in
1566 addition member types.
1567 * optimization: numeric, character and member types that are inhabited by
1568 exactly one value are tested with EQL.
1569 * optimization: more conditional branches are eliminated during IR1.
1570 Branches are simplified before performing if/if-conversion, and simple
1571 equivalent branches (that only read the same constant or variable) are
1573 * improvements to the Windows port:
1574 ** change: canonical unparsing form for pathname namestrings now uses / as
1575 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1576 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1577 on Windows. (thanks to Kalyanov Dmitry)
1578 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1580 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1581 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1582 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1583 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1585 * bug fix: interrupts arriving during CL:OPEN caused an error.
1586 * bug fix: overeager character buffering could cause input to block
1587 spuriously when reading from a pipe (lp#643686)
1588 * bug fix: more efficient timer expiry should avoid starvation on systems
1589 where number of SIGALRMs per second is restricted. (lp#375515)
1590 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1591 * bug fix: compile-times no longer scale linearly with the size of
1592 quoted lists in source-code. (lp#654289)
1593 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1594 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1595 so badly. (lp#654485)
1596 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1597 an error for eg. STRUCTURE. (lp#458015)
1598 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1599 (lp#613871, thanks to Roman Marynchak)
1600 * bug fix: more reliable &REST list type derivation. (lp#655203)
1601 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1602 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1603 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1604 also declared NOTINLINE. (lp#655581)
1605 * bug fix: the compiler could attempt to emit constant left shifts of
1606 greater value than n-word-bits. (lp#309063)
1607 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1608 type information for the function being set. (lp#659220)
1609 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1610 containing self-calls were recompiled with a new signature, and failed
1611 to warn when a self-call using the old signature was left in. (lp#655126)
1612 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1613 :DEFAULT when the default external had character size other than 8 bits.
1615 * bug fix: derived types of functions in the same file were implicitly
1616 trusted, leading to potential heap corruption when those function were
1617 defined incompatibly. (lp#657499)
1618 * bug fix: existing ASDF source registries are ignored when building
1619 contribs (lp#659105)
1620 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1621 (lp#655824, thanks to Roman Marynchak)
1622 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1623 package-lock violation was detected. (lp#660752)
1624 * bug fix: the system can store different docstrings for a single function
1625 under different names. (lp#661631, regression from 1.0.29.24)
1626 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1627 properly. (lp#384801)
1628 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1629 of specified length could confuse the type derivation in unsafe code.
1631 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1632 fork with multiple Lisp threads running is made on every platform,
1633 not just Darwin. (lp#451111)
1634 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1635 around when core was saved, which could cause undefined behaviour when the
1637 * bug fix: Allow UNTRACE of functions that are no longer defined
1638 (lp#667657, thanks to Attila Lendvai)
1639 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1640 compile-time warning (lp#664373, thanks to Stas Boukarev)
1642 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1643 * incompatible change: FD-STREAMS no longer participate in the serve-event
1644 event-loop by default. (lp#316072)
1645 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1646 affects streams from CL:OPEN.
1647 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1648 default, but this is liable to change: applications needing serve-event
1649 for socket streams should explicitly request it using :SERVE-EVENTS T
1651 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1653 * enhancement: CLOS effective method functions and defclass slot typechecking
1654 function now have debug names for use in backtraces and profiles.
1655 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1657 * enhancement: symbols are printed using fully qualified names in several
1658 error and warning messages which are often associated with package
1659 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1660 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1661 thanks to Andrew Golding)
1662 * bug fix: reading /proc files on Linux works. (lp#425199)
1663 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1665 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1666 breaking code that tried to write the value of a printer control variable.
1667 (lp#581564, thanks to Stas Boukarev)
1668 * bug fix: WRITE compiler macro did not handle output stream designators
1669 correctly. (lp#598374, thanks to Stas Boukarev)
1670 * bug fix: better availability of names of foreign functions in backtraces
1671 on Linux. (lp#626962, thanks to Stas Boukarev)
1672 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1673 lp#627581, thanks to Josh Elsasser and Jim Wise)
1674 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1675 thanks to Josh Elsasser)
1676 * bug fix: using aliases for builtin classes as defmethod specializers
1677 without adding DEFTYPEs for them works. (lp#618387)
1678 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1680 * bug fix: legally dynamic-extent lists and vectors used as
1681 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1682 * bug fix: inline-expansion creating references to dead lambda-variables
1683 (lp#454681, thanks to Alexey Dejneka)
1684 * bug fix: better error message for bogus numerical arguments to RANDOM.
1685 (lp#598986, thanks to Stas Boukarev)
1686 * bug fix: the compiler occasionally inlined references from incompatible
1687 environments occurs. (lp#308951)
1688 * bug fix: the compiler threw an error when trying to compile a local
1689 function (labels or flet) known to take a specialized complex argument.
1690 (not in launchpad, reported by sykopomp in #lispgames)
1691 * bug fix: package-locks failed to protect against compile-time effects of
1692 DEFUN when the symbol previously had a macro definition. (lp#576637)
1693 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1694 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1695 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1696 * bug fix: evaluation in debugger REPL works using the global context when
1697 in frames that do not have sufficient debug information.
1698 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1700 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1702 * bug fix: interrupt taking longer than the requested period caused SLEEP
1703 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1705 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1707 ** Cross-compilation host is now specified to make.sh using
1708 command-line argument --xc-host=<command> instead of a positional
1709 argument. (thanks to Daniel Herring)
1710 ** Install location can be specified to make.sh using command-line
1711 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1712 * optimization: The default implementation of
1713 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1714 * enhancement: Explicit memory barrier operations are now available for use
1715 by multithreaded code. See documentation for details.
1716 * enhancement: Experimental support for threading on Linux/PPC.
1717 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1718 * bug fix: EXPT signals an error if first argument is a zero and second
1719 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1720 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1721 (lp#576594, thanks to Roman Marynchak)
1722 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1723 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1725 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1726 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1727 cached, leading to many fewer expensive calls to
1728 COMPUTE-APPLICABLE-METHODS.
1729 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1730 CLASS argument, search for and call an appropriate optimized ctor function
1732 * bug fix: WRITE always returns the correct value.
1734 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1735 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1736 * bug fix: Name conflicts between symbols passed as arguments to a single
1737 call to IMPORT no longer add multiple symbols with the same name to the
1738 package (detectable via DO-SYMBOLS).
1739 * bug fix: support building without the dlshim on darwin x86 and x86-64
1741 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1743 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1744 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1746 * bug fix: linkage-table entries on PPC now no longer overflow their
1747 space allocation (potentially causing crashes if they are written out
1749 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1750 platforms, preventing the GC from seeing stale pointers on the control
1751 stack in subsequent GCs (which would, and does, break invariants).
1752 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1753 * bug fix: Literal characters with code points greater than about 32767
1754 now work on PPC UNICODE builds.
1755 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1756 high order bits are explicitly cleared out. In some contrived situations,
1757 this could lead to wrong results in mixed real/complex float arithmetic.
1758 * bug fix: Fix function/macro redefinition warnings when building with
1759 clisp. (lp#576787, thanks to Josh Elsasser)
1760 * new platform: experimental support for ppc/openbsd (thanks to Josh
1762 * bug fix: Floating-point traps now work on ppc/linux.
1764 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1765 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1766 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1767 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1768 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1769 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1770 SB-THREAD:GRAB-MUTEX.
1771 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1772 contain additional data structures and tools for concurrent programming;
1773 at the moment it contains a lock-free queue, and a lock-free mailbox
1775 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1776 GET-MUTEX but takes &key rather than &optional parameters. Also added
1777 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1779 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1780 SB-THREAD:WAIT-ON-SEMAPHORE.
1781 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1783 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1784 conditions to defer the deadline for forever.
1785 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1787 * enhancement: errors from NO-APPLICABLE-METHOD and
1788 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1789 generic function call.
1790 * enhancement: SB-BSD-SOCKET improvements
1791 ** sockets and socket streams now have a more informative printed
1792 representation based on the corresponding SOCKET-NAME and
1794 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1796 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1797 CL:CLOSE when appropriate, and no longer disassociates the stream
1798 from the socket if close failed. (lp#543951)
1799 * improvements to the instrumenting profiler
1800 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1801 ** optimization: counters no longer use locks for the overflow mode.
1802 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1803 incurred an off-by-one miscount.
1804 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1805 * enhancement: improved DEFMETHOD pretty-printing.
1806 * enhancement: perform range reduction when arguments are too large for
1807 x87's transcendentals (instead of returning 0). (lp#327192)
1808 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1809 some of CL-PPCRE's macros. (lp#570079)
1810 * enhancement: our machine code is slightly less hostile to valgrind on
1812 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1813 to Robert Swindells and Aleksej Saushev)
1814 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1815 * bug fix: a rare case of startup-time page table corruption.
1816 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1817 to timeouts could be left in an inconsistent state.
1818 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1819 * bug fix: misoptimization of multiplication by one in
1820 (SB-C::FLOAT-ACCURACY 0) policies.
1821 * bug fix: miscounts in SB-PROFILE.
1822 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1823 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1824 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1825 up itself" (March 2010) for further details.
1826 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1827 against length of the list if the element is found before the specified
1828 END is reached. (thanks to Alec Berryman, lp#554385)
1829 * bug fix: errors signalled during package graph modification no longer
1830 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1831 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1832 :SB-DOC feature. (lp#552564)
1833 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1834 * bug fix: more robust runtime executable path detection. (lp#375549)
1835 * bug fix: GCD always returns positive values. (lp#413680)
1836 * bug fix: Converting division to multiplication by reciprocal handles
1838 * bug fix: We were too eager in eliding range reduction tests on x87.
1839 The maximal magnitude is 2^63, not 2^64.
1840 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1842 * bug fix: Maybe restore buildability on Alpha.
1843 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1845 * bug fix: RANDOM-STATE can be printed readably again.
1846 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1847 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1848 types) could result in type mismatches during compilation.
1850 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1851 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1852 stack frame thrown from.
1853 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1854 compiler optimization qualities inside dynamic extent of its body.
1855 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1856 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1858 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1859 constraint propgation, allowing better compilation eg. when used to
1860 access structures with WITH-SLOTS. (lp#520366)
1861 * optimization: the compiler is now more aware of the type of the underlying
1862 storage vector for multidimensional simple arrays resulting in better code
1863 for accessing such arrays.
1864 * optimization: passing NIL as the environment argument to TYPEP no longer
1865 inhibits optimizing it. (lp#309788)
1866 * optimization: more efficient register usage when handling single-float
1867 arguments on x86-64. (thanks to Lutz Euler)
1868 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1869 pre-allocated temporary vectors. (lp#496249)
1870 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1871 in :INITIAL-CONTENTS. (lp#523612)
1872 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1873 functions. (lp#524707)
1874 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1875 WITH-SLOTS usages during compilation.
1876 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1877 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1878 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1879 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1880 instruction (tested on x86oid linux with ud2-breakpoints).
1881 * bug fix: slam.sh now works on win32.
1882 * bug fix: better differences of numeric types. (lp#309124)
1883 * bug fix: arrays declared intersection and union types can have their
1884 upgraded element type derived. (lp#316078)
1885 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1886 threads started during profiling. (lp#472499)
1887 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1889 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1890 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1891 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1892 values instead of signaling an error. (lp#309093)
1893 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1895 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1896 declarations (lp#497321)
1897 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1898 and failed to detect circular lists (lp#452008)
1899 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1901 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1902 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1903 due to it, so that handlers can run.
1904 * bug fix: reparsing undefined types if they have become defined since
1905 parsing. (lp#309128)
1906 * bug fix: missing &REST type in a proclamation for a function with both
1907 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1908 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1909 expanded calls (lp#542174)
1910 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1911 than just at toplevel form.
1913 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1914 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1915 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1916 but work on type specifiers.
1917 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1918 to name a type specifier.
1919 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1920 specifier is valid where "valid" basically means "would be accepted as
1921 second argument of TYPEP".
1922 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1923 returns the function's declared, or derived FTYPE.
1924 * new feature: SB-POSIX now supports accessing the d_ino member of
1925 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1926 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1927 provide for seeding a RANDOM-STATE object with user-provided data or
1928 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1929 attempt to initialize the returned state from the operating system's
1930 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1931 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1932 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1933 * bug fix: Fix grammar and style issues for the docstrings of
1934 printer-related variables and functions. (Thanks to mon_key; launchpad
1936 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1938 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1939 in a row even though a handler defered the deadline long into the
1941 * bug fix: A deadline handler was run without interrupts enabled for a
1942 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1943 in infinitely spinning, non-killable threads.
1944 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1945 before reaching the erring stack frame.
1946 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1947 real power. (launchpad bug lp#525949)
1948 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1949 GENCGC platforms. (launchpad bug lp#529014)
1950 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1951 (launchpad bug lp#525916)
1952 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1953 (Thanks to Robert Goldman)
1955 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1956 * optimization: ROUND with a single single-float or double-float argument
1957 is properly inlined when possible.
1958 * optimization: Slightly better code is generated for integer<->float
1959 conversions and for single-float<->double-float conversions on x86-64.
1960 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1961 code for 32-bit and 64-bit rotations on x86-64.
1962 * bug fix: The install script changes the ownership of directories as well
1963 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1964 launchpad bug lp#508485)
1965 * bug fix: TRUNCATE with a single single-float or double-float argument is
1966 properly inlined when possible. (launchpad bug lp#489388)
1967 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1968 no longer causes a compiler error on x86 and ppc.
1969 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1970 always relative to *READTABLE* rather than the passed argument.
1972 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1973 * minor incompatible change: threading support is now enabled by default
1975 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1977 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1978 are now caught and reported just like errors during macroexpansion.
1979 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1980 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1981 * enhancement: ASDF systems can now depends on SB-QUEUE.
1982 * fixes and improvements related to Unicode and external formats:
1983 ** bug fix: error handling and restart usage in the ucs-2 external format
1985 ** there is now an implementation of the ucs-4 external format.
1986 ** the utf-16 and utf-32 external formats are supported.
1987 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1988 in the environment. setenv() and unsetenv() are also provided. (reported by
1989 Fare Rideau; launchpad bug lp#460455)
1990 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1991 loading. This ensures sensible errors for .FASL files from other
1992 implementations on case-insensitive filesystems. (reported by Willem
1993 Broekema; launchpad bug lp#489417)
1994 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1995 Willem Broekema; launchpad bug lp#489698).
1996 * bug fix: some minor code rearrangements to reenable warning-free building
1997 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1998 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2000 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2003 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2004 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2005 * improvement: support O_LARGEFILE access to files larger than 2GB on
2006 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2007 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2008 definitions for methods specializing on the passed class itself.
2009 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2010 definitions for methods specializing on the passed class itself, or on
2012 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2013 about itself during the build (e.g. for M-? in Slime), if this flag is
2014 enabled in customize-target-features.lisp. This will increase the core
2015 size by about 5-6mb, though, so it's mostly interesting to SBCL
2017 * new feature: various GENCGC tuning parameters have been experimentally
2018 documented and exported from SB-EXT. See documentation for details.
2019 * fixes and improvements related to Unicode and external formats:
2020 ** the Unicode character database has been upgraded to the
2021 Unicode 5.2 standard, giving names and properties to a number of new
2022 characters, and providing a few extra characters with case
2024 ** improvement: restarts for providing replacement input/output on coding
2025 errors for fd-stream external formats.
2026 ** improvement: where :<encoding> is a keyword corresponding to an
2027 external format the system supports, it is now possible to specify
2028 (:<encoding> :replacement <character>) as an external format which will
2029 automatically substitute <character> on encoding or decoding errors for
2030 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2032 ** improvement: the file streams underlying the standard streams (such as
2033 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2034 which uses the replacement mechanism to handle encoding errors,
2035 preventing various infinite error chains and unrecoverable I/O
2037 ** minor incompatible change: the utf-8 external format now correctly
2038 refuses to encode Lisp characters in the surrogate range (char-codes
2039 between #xd800 and #xdfff).
2040 ** fix a typo preventing conversion of strings into octet vectors
2041 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2043 ** fix a bug in the octet multibyte handling of decoding errors and the
2044 USE-VALUE restart. (launchpad bug lp#314939)
2045 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2046 restart on fd-stream decoding errors.
2047 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2048 error is near the end of file.
2049 ** fix a double-error case in unibyte octet conversions, when the first
2050 use of USE-VALUE is ignored.
2051 ** fix bugs in handling of undefined code points in unibyte encodings.
2052 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2053 streams after an UNREAD-CHAR.
2054 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2055 object is allocated in a boxed region of dynamic space.
2056 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2057 fork with multiple Lisp threads running is made, instead of going
2058 ahead with unpredictable consequences. (reported by Leslie Polzer)
2059 * bug fix: uses of slot accessors on specialized method parameters within
2060 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2061 error while finalizing the class. This fix may cause classes with slot
2062 accessors to be finalized later than previously. (reported by Lars Rune
2063 Nøstdal; launchpad bug lp#473699)
2064 * bug fix: restore buildability on the MIPS platform. (regression from
2065 1.0.30.38, reported by Samium Gromoff)
2066 * bug fix: inspecting closures is less likely to fail with a type error.
2067 * bug fix: no timer starvation when setting the system clock back.
2068 (launchpad bug lp#460283)
2069 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2070 standard pprint dispatch table as specified by CLHS.
2071 * bug fix: give CLISP a hint about a type declaration to enable it to build
2072 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2074 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2075 (reported by Attila Lendvai; launchpad bug lp#310132)
2076 * bug fix: distinguish in type specifiers between arrays that might be
2077 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2078 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2079 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2080 * bug fix: setting the value of a symbol-macro within a method in the
2081 presence of type declarations works properly again. (reported by Iban
2082 Hatchondo; launchpad bug lp#485019)
2084 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2085 * optimization: faster FIND and POSITION on strings of unknown element type
2086 in high SPEED policies. (thanks to Karol Swietlicki)
2087 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2089 * improvement: better error signalling for bogus parameter specializer names
2090 in DEFMETHOD forms (reported by Pluijzer)
2091 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2093 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2095 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2096 removes previous default initargs (reported by Lars Rune Nøstdal and
2098 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2099 lambda-lists. (reported by Peter Seibel)
2100 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2101 correctly when starting from an executable core without saved runtime
2102 options (reported by Faré Rideau, thanks to Zach Beane)
2103 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2104 an optimization note instead. (reported by Martin Cracauer)
2105 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2106 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2107 new process group if it doesn't need to share stdin with the sbcl
2108 process. (thanks to Leslie Polzer)
2109 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2110 (reported by Stanislaw Halik)
2112 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2113 * improvement: stack allocation is should now be possible in all nested
2114 inlining cases: failure to stack allocate when equivalent code is manually
2115 open coded is now considered a bug.
2116 * improvements related to Unicode:
2117 ** the Unicode character database has been upgraded to the
2118 Unicode 5.1 standard, giving names and properties to a number of new
2119 characters, and providing a few extra characters with case
2121 ** the system now recognizes and produces names for Unicode Hangul
2122 syllable characters.
2123 ** the EBCDIC-US external-format is now supported for octet operations
2124 (as well as for stream operations).
2125 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2126 be used to output toplevel compile-time effects into a separate .CFASL
2128 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2129 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2131 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2133 * optimization: division of floating point numbers by constants uses
2134 multiplication by reciprocal when an exact reciprocal exists.
2135 * optimization: multiplication of single- and double-floats floats by
2136 constant two has been optimized.
2137 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2138 sufficient type information is available. (thanks to Leslie Polzer)
2139 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2140 known structure objects are as efficient as defstruct generated accessors.
2141 * optimization: unused vector creation can now be optimized away.
2142 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2143 * improvement: a STYLE-WARNING is signalled when a generic function
2144 clobbers an earlier FTYPE proclamation.
2145 * improvement: the compiler is able to track the effective type of
2146 generic function across method addition and removal even in the
2147 absence of an explicit DEFGENERIC.
2148 * improvement: DESCRIBE now reports on symbols naming undefined
2149 but assumed or declared function as well.
2150 * improvement: recompilation of systems using SB-GROVEL now works
2151 (thanks to Leslie Polzer)
2152 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2153 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2155 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2156 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2157 well as user defined declaration names.
2158 ** VARIABLE-INFORMATION is now aware of alien variables.
2159 * improvement: improved address space layout on OpenBSD (thanks to Josh
2161 * improvement: pretty-printing of various Lisp forms has been improved
2162 (thanks to Tobias Rittweiler)
2163 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2164 unused were deleted in safe code. (reported by John Fremlin)
2165 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2167 * bug fix: some out-of-line array predicates were missing (reported by
2169 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2171 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2172 (thanks to Larry D'Anna)
2173 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2174 as well. (reported by Josh Elsasser)
2175 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2176 leading to possible attempts to delete the same file twice. See docstring
2177 on DELETE-FILE for details. (reported by John Fremlin)
2178 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2179 designator argument, rather than its truename. (reported by Luis
2181 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2182 information about some array types. (thanks to Luis Oliveira)
2183 * bug fix: moderately complex combinations of inline expansions could
2184 be miscompiled if the result was declared to be dynamic extent.
2185 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2186 form (+ <variable> <integer>) were miscompiled under certain
2188 * bug fix: in some cases no compiler note about failure to stack allocate
2189 was emitted, even if the objects were in fact heap allocated.
2190 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2191 allocation could cause objects users might reasonably expect to
2192 be heap allocated to be stack allocated.
2193 * bug fix: DESCRIBE signalled an error for generic functions under
2194 certain circumstances. (thanks to Leslie Polzer)
2195 * bug fix: Fixed spelling of an error message.
2197 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2198 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2199 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2200 of SB-THREAD:THREAD-ERROR-THREAD.
2201 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2202 * new feature: docstrings for local and anonymous functions are no longer
2203 discarded. (thanks to Leslie Polzer)
2204 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2205 values in other threads.
2206 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2207 about object allocation.
2208 * optimization: division of a real float by a complex float is implemented
2209 with a specialised code sequence.
2210 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2211 keywords is an order of magnitude faster.
2212 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2213 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2214 methods, and similarly for non-standard metaclass classes as long as there
2215 are no methods additional on MAKE-INSTANCE.
2216 * optimization: more efficient type-checks for FIXNUMs when the value
2217 is known to be a signed word on x86 and x86-64.
2218 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2219 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2221 * optimization: compiler is smarter about delegating argument type checks to
2223 * optimization: several character functions are now compiled somewhat more
2224 efficiently. (reported by Lynn Quam)
2225 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2226 * improvement: less unsafe constant folding in floating point arithmetic,
2227 especially for mixed complex/real -float operations.
2228 * optimization: constant double and single floats are stored in native
2229 unboxed format on x86[-64].
2230 * optimization: smarter code for arithmetic operations with constant floats,
2231 complex floats, or integers on x86[-64].
2232 * optimization: smarter code for conjugate/multiplication of float complexes
2233 and abs/negate of floats on x86-64.
2234 * optimization: more efficient complex float and real float operations on
2236 * improvement: complex float division is slightly more stable.
2237 * improvement: DESCRIBE output has been reworked to be easier to read and
2238 contains more pertinent information.
2239 * improvement: failure to provide requested stack allocation compiler notes
2240 provided in all cases (requested stack allocation not happening without a
2241 note being issued is now considered a bug.)
2242 * bug fix: SB-POSIX exports the documented types and functions
2243 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2244 types. (reported by "abhi")
2245 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2246 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2247 (thanks to Paul Khuong)
2248 * bug fix: looping around HANDLER-CASE could silently consume stack space
2249 on each iteration. (reported by "foobar")
2250 * bug fix: better error signalling when calls to functions seeking elements
2251 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2252 (reported by Tobias Rittweiler)
2253 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2254 directory components now works as it used to. (various prolems reported by
2255 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2256 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2257 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2258 * bug fix: bogus undefined variable warnings from fopcompiled references to
2259 global variables. (thanks to Lars Rune Nøstdal)
2260 * bug fix: foreign function names should now appear in backtraces on
2261 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2262 * bug fix: SETF compiler macro documentation strings are not discarded
2264 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2265 (thanks to Alex Plotnick)
2266 * bug fix: SLEEP accepts large integer arguments, truncating them to
2267 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2268 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2269 * bug fix: compiler notes for expensive slot type checks could be emitted
2270 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2272 changes in sbcl-1.0.29 relative to 1.0.28:
2273 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2274 https://bugs.launchpad.net/sbcl
2275 Bugs can be reported directly there, or by sending email to
2276 sbcl-bugs@lists.sourceforge.net
2277 (no subscription required.)
2278 * minor incompatible change: under weak type checking policy integer
2279 types are weakened less aggressively.
2280 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2281 allowed to return, which causes SBCL to quit with exit status 0. Previously
2282 if the function returned with a small integer return value, that value
2283 was accidentally reused as the exit status.
2284 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2285 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2286 :HASH-FUNCTION argument. Refer to user manual for details.
2287 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2289 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2290 microseconds since the Unix epoch on all platforms.
2291 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2292 allows the compiler to safely elide boundedness checks for special
2294 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2295 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2296 efficiency measure for threaded platforms, but also valueable in
2298 * new feature: UNC pathnames are now understood by the system on Windows.
2299 * optimization: the compiler uses a specialized version of FILL when the
2300 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2302 * optimization: accesses to potentially non-simple arrays where element type
2303 is known are 50% faster.
2304 * optimization: compiler now generates faster array typechecking code.
2305 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2307 * optimization: multidimensional array accesses in the absence of type
2308 information regarding array rank are approximately 10% faster due to
2309 open coding of ARRAY-RANK.
2310 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2311 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2313 * optimization: result of call to VECTOR can now be stack allocated.
2314 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2315 as long as the resulting array is one-dimensional and has a known
2316 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2317 length of the list matches the known length of the vector does not
2318 allocate the list as an intermediate step. Ditto for VECTOR and simple
2320 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2321 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2322 known element type, and is known to be simple and one dimensional.
2323 * improvement: SBCL now emits a compiler note where stack allocation was
2324 requested but could not be provided (not in all cases, unfortunately)
2325 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2326 * improvement: pretty-printing loop has been implemented properly. (thanks
2327 to Tobias Rittweiler)
2328 * documentation: CLOS slot typechecing policy has been documented.
2329 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2330 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2331 pointer, leading to memory faults. (thanks to Bart Botta)
2332 * bug fix: better floating point exception handling on x86/OpenBSD.
2333 (thanks to Josh Elsasser)
2334 * bug fix: exit status from QUIT when called under --script was lost
2335 (reported by Hubert Kauker)
2336 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2337 same implementation of FILL to initialize the array, even if a more
2338 efficient one was available (reported by Stas Boukarev, thanks to
2340 * bug fix: potential miscompilation of array stack allocation on x86 and
2341 x86-64. (reported by Time Tossavainen)
2342 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2343 result in their subforms being treated as top level forms. (reported by
2345 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2346 than a machine register could leave garbage in the high bits of the
2347 result register (bug 316325).
2348 * bug fix: disable address space randomization Linux/x86-64 as well,
2349 not just x86-64. (reported by Ken Olum)
2350 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2351 generate incorrect code.
2352 * bug fix: #201; type inference for CONS and ARRAY types could derive
2353 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2354 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2355 could not be assigned to or bound with PROGV. (reported by Lorenz
2357 * bug fix: the value of CL:- in the inspector was the previous expression
2358 evaluated rather than the expression being evaluated.
2359 * bug fix: constants can no longer be locally declared special.
2360 * bug fix: signals delivered to threads started from foreign land (read:
2361 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2362 thread by blocking all signals and resignalling.
2363 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2364 from :INITFORM, if any.
2366 changes in sbcl-1.0.28 relative to 1.0.27:
2367 * a number of bugs in cross-compilation have been fixed, with the ultimate
2368 result that building under (at least) clisp should be much more reliable.
2369 * minor incompatible changes: echo-streams now propagate unread-char to the
2370 underlying input stream, and no longer permit unreading more than one
2372 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2373 frames, allowing for instance more reliable backtraces.
2374 * improvement: the debugger REPL can now reference lexical variables
2375 by name directly for code compiled with (DEBUG 3).
2376 * improvement: errors from malformed declarations now have better source
2377 paths associated with them. (thanks to Tobias Rittweiler)
2378 * optimization: faster local calls on x86/x86-64
2379 * bug fix: some error messages for out-of-bound array indexes confused the
2380 index and the bound. (thanks to Stas Boukarev)
2381 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2383 * bug fix: running regressions tests in shells without OSTYPE set now works.
2384 (reported by Harald Hanche-Olsen)
2385 * bug fix: more robust static space exhaustion signalling from
2386 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2387 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2388 docstring away instead of storing it under names such as (LAMBDA (X)).
2389 (reported by Leslie Polzer)
2390 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2391 (thanks to Ole Arndt for the patch)
2392 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2393 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2394 potentially-invalid effective methods in its cache.
2395 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2396 instances as well (thanks to Paul Khuong)
2397 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2398 SB-POSIX:WAITPID and their C equivalents.
2399 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2401 changes in sbcl-1.0.27 relative to 1.0.26:
2402 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2403 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2404 * improvement: the system either recovers from stack exhaustion or dies
2405 properly as opposed to leaving the user uncertain of whether the handler
2406 trampled on some random memory next to the stack or having to rely on
2407 --lose-on-corruption (which is still a good idea to use in production
2408 because stack exhaustion can happen in signal handlers which will likely
2410 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2411 1.0.25.37, reported by Harald Hanche-Olsen)
2412 * bug fix: work around signal delivery bug in darwin (regression from
2413 1.0.25.44, reported by Sidney Markowitz)
2414 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2416 changes in sbcl-1.0.26 relative to 1.0.25:
2417 * incompatible change: an interruption (be it a function passed to
2418 INTERRUPT-THREAD or a timer function) runs in an environment where
2419 interrupts can be enabled. The interruption can use
2420 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2421 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2422 potentially running out of stack. Keep in mind that in the absence
2423 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2424 acquiring a lock can enable interrupts.
2425 * incompatible change: GC-OFF and GC-ON are removed, as they were
2426 always unsafe. Use WITHOUT-GCING instead.
2427 * new feature: runtime option --disable-ldb
2428 * new feature: runtime option --lose-on-corruption to die at the
2429 slightest hint of possibly non-recoverable errors: running out of
2430 memory, stack, alien stack, binding stack, encountering a memory
2431 fault, etc. In the absence of --lose-on-corruption a warning is
2433 * enhancement: detect binding stack exhaustion
2434 * enhancement: detect alien stack exhaustion on x86/x86-64
2435 * improvement: generally more stable and reliable interrupt handling
2436 * improvement: there is a per thread interruption queue,
2437 interruptions are executed in order of arrival
2438 * improvement: a repeating timer reschedules itself when the it has
2439 finished, but expiration times are spaced equally. If an
2440 expiration time is in the past it will trigger after a short grace
2441 period that may give a chance to other things to run.
2442 * optimization: slightly faster gc on multithreaded builds
2443 * optimization: faster WITHOUT-GCING
2444 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2445 important locks so that the debugger/handler doesn't produce
2446 recursive errors or deadlock.
2447 * bug fix: real-time signals are not used anymore, so no more
2448 hanging when the system wide real-time signal queue gets full.
2449 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2451 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2452 * bug fix: fix random memory faults related to interrupts on alpha
2453 * bug fix: fix random memory faults related to interrupts on sparc
2454 * bug fix: fix deadlocks related to starting threads
2455 * bug fix: fix deadlines on locks on futex platforms
2456 * bug fix: restore errno in signal handlers
2457 * bug fix: fix deadlocks related to hash tables
2458 * bug fix: fix deadlocks in pcl
2460 changes in sbcl-1.0.25 relative to 1.0.24:
2461 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2462 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2463 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2464 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2465 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2466 better name and does not return values so stale on multiprocessor systems.
2467 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2469 * improvement: unithread builds keep track of MUTEX-VALUE.
2470 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2471 stream anymore making it thread safe to have a concurrent reader and
2472 a writer, for instance, in a pipe.
2473 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2474 arguments, making compiler-macros for SETF-functions able to inspect
2475 their constant arguments.
2476 * improvement: COMPILE-FILE reports times with millisecond accuracy
2477 (thanks to Luis Oliveira)
2478 * optimization: CHAR-CODE type derivation has been improved, making
2479 TYPEP elimination on subtypes of CHARACTER work better. (reported
2480 by Tobias Rittweiler, patch by Paul Khuong)
2481 * bug fix: setting alien structure fields of type struct by value now
2482 computes the right offset for the memory copy.
2483 * bug fix: compilation problem involving inlined calls to aliens with
2484 result type VOID. (reported by Ken Olum)
2485 * bug fix: #235a; sequential inline expasion in different policies no
2486 longer reuses the functional from the previous expansion site.
2487 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2488 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2489 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2490 cause an implied type redefinition. Regression from 1.0.21.29.
2491 * bug fix: sign-extension of small signed return values now works with C
2492 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2493 * improvements to the Windows port:
2494 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2495 Westfold, thanks to Rudi Schlatte)
2497 changes in sbcl-1.0.24 relative to 1.0.23:
2498 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2499 vector of a multidimensional SIMPLE-ARRAY.
2500 * new feature: the system now signals a continuable error if standard
2501 readtable modification is attempted. (thanks to Tobias Rittweiler)
2502 * new feature: DIRECTORY has been extended with a non-standard keyword
2503 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2504 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2505 has been robustified and documented better. (thanks to Robert Goldman)
2506 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2507 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2508 * tradeoff: constant FORMAT control strings are now compiled unless
2509 SPACE > SPEED (previously only when SPEED > SPACE.)
2510 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2512 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2514 * bug fix: lexical type declarations are now correctly reported by
2515 SB-CLTL2. (reported by Larry D'Anna)
2516 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2517 using UTF-8 as external format. (thanks to Luis Oliveira)
2518 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2519 are signalled correctly. (thanks to Stas Boukarev)
2520 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2521 designator. (thanks to Tobias Rittweiler)
2522 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2523 designator, and returns T instead of the function. (thanks to
2525 * bug fix: direct superclasses of STANDARD-CLASS and
2526 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2527 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2528 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2529 when no class with the named slot yet exists no longer causes a
2530 compile-time style-warning.
2531 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2532 in safe code. (reported by Didier Verna)
2533 * bug fix: #430; nested structure constructors can stack allocate.
2534 * bug fix: on some 64-bit platforms dynamic space size was truncated
2535 to #xffff0000 bytes. (reported by Benjamin Lambert)
2536 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2537 REPL unusable. (reported by Daniel Herring)
2538 * bug fix: return values of READ-SEQUENCE did not take :START into
2539 account on file streams, regressions since 1.0.12.22. (reported by
2540 Thomas Russ, patch by Paul Khuong)
2541 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2542 method specializer used to confuse permuation vector optimization.
2543 * bug fix: system inserted bogus implicit type declarations for local
2544 special variables in DEFMETHOD bodies.
2545 * bug fix: #354; duplicated frames in backtraces due to
2546 non-tail-call-optimized XEPs to functions with return type NIL
2548 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2549 initializes structure object slots according to DEFSTRUCT initforms,
2550 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2551 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2552 (reported by Bruno Haible and Stephen Wilson)
2553 * bug fix: #395; fill-pointer output streams used now support
2554 element-type BASE-CHAR as well.
2555 * bug fix: compiler error when attempting to derive return value of
2556 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2558 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2560 * bug fix: Mac OS X binaries should now be portable between Leopard
2563 changes in sbcl-1.0.23 relative to 1.0.22:
2564 * enhancement: when disassembling method functions, disassembly
2565 for the associated fast function is also produced.
2566 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2568 * optimization: printing with *PRINT-PRETTY* true is now more
2569 efficient as long as the object being printed doesn't require
2570 special handling by the pretty printer.
2571 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2572 now interact correctly with type declarations.
2573 * partial bug fix: PCL detects infinite recursion during wrapper
2574 validation. (thanks to Attila Lendvai)
2575 * bug fix: #426; nested function calls are inlined properly.
2576 Previously if FOO was an inline function, in calls of the form
2577 (FOO (FOO ...)) the outer call was not inlined.
2578 * bug fix: long long arguments passed in registers to alien
2579 functions on PowerPC Linux and NetBSD are now handled correctly
2580 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2582 changes in sbcl-1.0.22 relative to 1.0.21:
2583 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2584 for the shared object in the current directory, but passes the native
2585 namestring of the designated pathname to the operation system's shared
2586 object loading function as-it.
2587 * minor incompatible change: --disable-debugger toplevel option now takes
2588 effect before processing of initialization files and --eval or --load
2590 * new feature: new commandline argument: --script, which supports
2591 shebang lines. See documentation for details. (based on work by
2593 * new feature: SAVE-LISP-AND-DIE can save current values of
2594 --dynamic-space-size and --control-stack-size in the executable core,
2595 causing it to skip normal runtime option processing. See documentation
2596 for details. (thanks to Zach Beane)
2597 * enhancement: inoccous calls to EVAL or generic functions dispatching
2598 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2599 * enhancement: the system no longer resignals errors from --load and
2600 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2601 associated with the original error to be lost. (thanks to Ariel
2603 * enhancement: :DONT-SAVE keyword argument has been added to
2604 LOAD-SHARED-OBJECT for controlling interaction with
2605 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2606 the effects of an earlier LOAD-SHARED-OBJECT call.
2607 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2608 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2609 provided. (reported by Cedric St-Jean)
2610 * bug fix: circularity handling in the reader did not treat raw
2611 structure slots correctly. (reported by Cedric St-Jean)
2612 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2613 file descriptors when there were none.
2614 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2615 was broken. (reporteed by Willem Broekema)
2616 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2617 pathnames without a directory.
2618 * bug fix: COMPILE-FILE did not warn about undefined variable
2619 references at toplevel, and LOAD of the resulting fasl did
2620 not signal an error.
2621 * bug fix: functions with non-required arguments used to end up with
2622 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2623 * bug fix: redefining a function with non-required arguments didn't
2624 update the system's knowledge about its call signature properly.
2625 * bug fix: fixed #431; incompatible alien record type redefinitions
2626 are detected and handled. (reported by Neil Haven)
2627 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2628 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2630 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2631 after alien stack frames.
2632 * bug fix: strings passed to mk{s,d}temp lacked null termination
2634 changes in sbcl-1.0.21 relative to 1.0.20:
2635 * new feature: the compiler is able to track the effective type of a
2636 generic function across method addition and removal.
2637 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2638 appropriately typed structure slots without locking.
2639 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2640 information like those gathered by TIME using a programming-friendly
2642 * new feature: TIME reports time taken even if the form performs a
2643 non-local transfer of control.
2644 * enhancement: reduced conservativism on GENCGC platforms: on
2645 average 45% less pages pinned (measured from SBCL self build).
2646 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2647 mutate constant symbols or violate declaimed type of the symbol.
2648 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2649 sleeping on the semaphore in heavily contested semaphores.
2650 * bug fix: semaphores and condition variables were not interrupt
2652 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2653 owned by other threads anymore.
2654 * bug fix: FIND on lists called KEY outside the specified
2655 subsequence. (reported by budden)
2656 * bug fix: LOG doesn't use single-float intermediate results when
2657 given mixed integer and double-float arguments, leading to better
2658 precision. (reported by Bob Felts)
2659 * bug fix: LOG with base zero returned values of inconsistent type.
2661 changes in sbcl-1.0.20 relative to 1.0.19:
2662 * minor incompatible change: OPTIMIZE qualities
2663 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2664 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2665 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2666 * documentation: some slot access efficiency guidelines have been
2667 added to the user manual.
2668 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2669 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2670 as ASSOC and MEMEBER.
2671 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2672 to more efficient EQ-comparison versions more often.
2673 * optimization: enhanced derivation of DOLIST iteration variable type
2675 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2677 * optimization: runtime lookup of function definitions can be
2678 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2679 * optimization: compiler is able to derive the return type of
2680 (AREF (THE STRING X) Y) as being CHARACTER.
2681 * optimization: CLRHASH on empty hash-tables no longer does pointless
2682 work. (thanks to Alec Berryman)
2683 * optimization: REPLACE deftransforms don't punt when :START1 or
2685 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2686 no longer emits a code deletion note. (reported by Andrew
2688 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2689 functions with an odd number of &OPTIONAL arguments, a &REST
2690 argument, and one or more &KEY arguments at the call site.
2691 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2692 arguments appeared at call sites as well.
2693 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2694 READ-LINE &co can no longer read from them afterwards. (reported
2696 * bug fix: fixed #427: unused local aliens no longer cause compiler
2697 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2699 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2700 alien-stack leakage. (reported by Andy Hefner)
2701 * bug fix: PROGV signals an error when an attempt to violate declared
2702 type of a variable or bind a constant is made.
2703 * bug fix: SET signals an error when an attempt to violate declared
2704 type of a variable is made.
2705 * bug fix: restart computation during the execution of a restart
2706 test function no longer causes infinite recursion. (reported by
2708 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2709 signals an error. (thanks to Pierre Mai)
2710 * bug fix: EXPORT left symbol unexported in conflict situations.
2711 (thanks to Michael Weber)
2712 * bug fix: correctly handle name conflicts involving CL:NIL.
2713 (thanks to Michael Weber)
2714 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2715 conflicts arising from USEing package with conflicting symbols
2716 correctly. (thanks to Michael Weber)
2718 changes in sbcl-1.0.19 relative to 1.0.18:
2719 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2720 warnings that go otherwise unhandled will be muffled if they are
2721 of the type that's the value of this variable.
2722 * optimization: stack allocation is slightly more efficient on x86
2724 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2725 where a raw slot always is initialized using the initform whose
2726 type is not know sufficiently well a compile-time are now compiled
2727 correctly. (reported by John Morrison)
2728 * bug fix: compiler no longer makes erronous assumptions in the
2729 presence of non-foldable SATISFIES types.
2730 * bug fix: stack analysis missed cleanups of dynamic-extent
2731 arguments in non-let-converted calls to local functions.
2732 * improvements to the Windows port:
2733 ** adjusted address spaces for building on both Win32 and
2734 Win64. (thanks for John Connors)
2735 * fixed some bugs revealed by Paul Dietz' test suite:
2736 ** interval arithmetic during type derivation used inexact integer
2737 to single-float coercions.
2738 ** arithmetic operations involving large integers and single
2739 floats give the same results in compiled and interpreted code.
2740 ** deriving the result type of COERCE no longer signals an error
2741 if the derived type of the second argument is a MEMBER type
2742 containing invalid type specifiers.
2743 ** ADJOIN with constant NIL as second argument works correctly.
2744 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2746 changes in sbcl-1.0.18 relative to 1.0.17:
2747 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2748 profiles only the current thread.
2749 * minor incompatible change: changes to SYMBOL-VALUE of constants
2750 defined with DEFCONSTANT now signal an error.
2751 * enhancement: SB-SPROF now has support for wallclock profiling,
2752 and is also able to profile specific threads. REPORT output
2753 has also additional sorting options.
2754 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2756 * optimization: structure allocation has been improved
2757 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2758 ** out of line constructors are ~10% faster.
2759 ** inline constructors are ~15% faster.
2760 ** inline constructors are capable of dynamic extent allocation
2761 (generally on x86 and x86-64, in some cases on other platforms
2763 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2765 * optimization: file compiler is now able to coalesce non-circular
2766 lists, non-base strings, and bit-vectors. Additionally, constants
2767 are never referenced through SYMBOL-VALUE at runtime.
2768 * optimization: code defining methods on PRINT-OBJECT (and other
2769 generic functions in the COMMON-LISP package) now loads faster.
2770 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2772 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2773 fasl is now deleted. (reported by Attila Lendvai)
2774 * bug fix: READ-LINE always returned NIL for the last line in files.
2775 (reported by Yoshinori Tahara)
2776 * bug fix: more accurate disassembly annotations of foreign function
2777 calls. (thanks to Andy Hefner)
2778 * bug fix: trimming non-simple strings and non-string string
2779 designators when the there is nothing to trim works properly.
2780 (thanks to James Knight)
2781 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2782 (thanks to Travis Cross)
2783 * fixed some bugs revealed by Paul Dietz' test suite:
2784 ** NIL is a valid function name (regression at 1.0.13.38)
2785 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2786 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2787 fill pointers properly (regression at 1.0.12.23)
2788 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2789 displacement indices properly (regression at 1.0.12.23)
2791 changes in sbcl-1.0.17 relative to 1.0.16:
2792 * temporary regression: user code can no longer allocate closure
2793 variable storage on stack, due to bug 419 without explicitly
2794 requesting it. Please consult sbcl-devel for advice if you need to
2795 use this feature in the meanwhile.
2796 * new feature: runtime argument --control-stack-size can be used to
2797 adjust thread default control stack size.
2798 * enhancement: improved TIME output
2799 ** all times are reported using the measured accuracy (milliseconds
2800 for real and GC times, microseconds for everything else.)
2801 ** processor cycle counts on x86 and x86-64.
2802 ** interpreted forms are counted for both evaluator modes.
2803 ** number of lambdas converted by the compiler is reported.
2804 ** CPU percentage report (computed from real and total run time.)
2805 ** more comprehensive run time reporting, using a condenced format
2806 ** interperted form, lambda, and page fault counts are omitted
2808 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2810 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2811 * optimization: two argument forms of LAST are upto ~10% faster
2812 in normal SPEED policies.
2813 * optimization: NCONC no longer needs to heap cons its &REST list
2814 in normal SPEED policies.
2815 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2816 to Sidney Markowitz)
2817 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2818 regression since 1.0.9.1. (thanks to Eric Marsden)
2819 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2820 since 1.0.15.36. (thanks to Paul Khuong)
2821 * bug fix: LAST when always returned the whole list when given a bignum
2822 as the second argument.
2823 * bug fix: dynamic extent allocation of nested lists and vectors
2824 could leak to otherwise accessible parts.
2825 * bug fix: invalid optimization of heap-allocated alien variable
2827 * bug fix: fasl header checking is less vulnerable to different
2828 platform word lengths.
2829 * bug fix: more correct assembler syntax for GNU binutils
2830 2.18.50.0.4 support. (thanks to Marijn Schouten)
2831 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2833 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2834 declarations) successfully. (reported by Attila Lendvai)
2836 changes in sbcl-1.0.16 relative to 1.0.15:
2837 * minor incompatible change: revert the changes to sb-posix's error
2838 signaling added in 1.0.14.
2839 * minor incompatible change: change PROBE-FILE back to returning
2840 NIL whenever we can't get a truename, as was the case before 1.0.14.
2841 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2842 inherits from ERROR instead of just CONDITION.
2843 * new feature: SB-INTROSPECT can provide source locations for instances
2844 as well. (thanks to Tobias Rittweiler)
2845 * optimization: binding special variables now generates smaller code
2846 on threaded platforms.
2847 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2848 and cases where no :TEST is given but the compiler can infer that
2849 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2850 * optimization: better LOGNOT on fixnums.
2851 * optimization: modular arithmetic for a particular requested width
2852 is implemented using a tagged representation unless a better
2853 representation is available.
2854 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2855 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2856 for wellformedness and returns a specialized vector. (reported by
2857 Francois-Rene Rideau)
2858 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2859 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2860 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2861 unscheduling timer at the same time as another timer fires.
2862 * bug fix: don't reschedule timers for dead threads.
2863 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2864 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2865 bogus errors if select() was interrupted.
2866 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2868 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2869 * enhancement: cleaner backtraces for interactive interrupts, as
2870 well as other cases where the interesting frames used to be
2871 obscured by interrupt handling frames.
2872 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2873 now supported, and tracing a whole package using (TRACE "FOO") now
2874 traces SETF-functions as well.
2875 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2876 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2877 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2878 * unreadably printed representation of hash-tables now includes
2880 * bug fix: partially fixed #188: type propagation from assignments
2881 is now more efficient.
2882 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2883 'DOUBLE-FLOAT) are not flushable.
2884 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2885 full address of the object, and none of the tag bits.
2886 * bug fix: readably printing hash-tables now respects other printer
2887 control variables. (reported by Cedric St-Jean)
2888 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2889 keyword with MAKE-HASH-TABLE.
2890 * bug fix: export SB-POSIX:MKSTEMP.
2891 * bug fix: SORT was not interrupt safe.
2892 * bug fix: XREF accounts for the last node of each basic-block as
2894 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2895 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2896 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2897 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2898 create obsolete instances in the case of redefinition or
2899 obsoletion of a superclass. (thanks to Andy Hefner)
2900 * bug fix: Support for the Alpha architecture has been revived; it had
2901 suffered somewhat from lack of maintenance since sbcl-1.0.
2902 * improvements to the Windows port:
2903 ** The system detects the codepage to use at startup, instead of
2904 using the value from the saved core. (thanks to Kei Suzuki)
2906 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2907 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2908 (see documentation for details.)
2909 * revived support for OpenBSD (contributed by Josh Elsasser)
2910 * partially fixed bug #108: ROOM no longer suffers from occasional
2911 (AVER (SAP= CURRENT END)) failures.
2912 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2913 bodies no longer cause a WARNING to be signalled. (reported by
2915 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2916 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2917 the bug in TRUNCATE.) (reported by Michael Weber)
2918 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2919 no samples. (reported by Andy Hefner)
2920 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2921 no longer appear as (NIL ...) frames in backtraces.
2922 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2923 is now actually exported from SB-EXT as documented. (reported by
2925 * bug fix: sb-aclrepl now correctly understands how to inspect
2926 single-floats on 64-bit platforms where single-floats are not boxed.
2927 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2928 yet been finalized. (reported by Levente Meszaros)
2929 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2930 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2931 SBCL-specific optimize qualities.
2933 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2934 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2935 an executable in the search path, and does so in the child
2936 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2937 been removed; it can be found in the CVS history, for somebody who
2938 needs that search behavior (see the manual).
2939 * minor incompatible change: compiler policy re. weakening type
2940 checks has changed: now type checks are weakened only if SAFETY < 2
2942 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2943 unparsing of directory pathnames as files. Analogously,
2944 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2945 filename to parse into a directory pathname.
2946 * enhancement: implicit generic function creation now signals a
2947 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2948 users can bind handlers for and muffle around calls to LOAD.
2949 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2950 to be used (using the default stream external format), and allows
2951 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2952 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2953 strings and vectors whose element-type or simplicity is not fully
2954 known at compile-time.
2955 * optimization: STRING-TRIM and related functions no longer allocate
2956 a new string when no trimming needs to be performed. These functions
2957 are also faster than before when the input string has been declared
2959 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2960 * optimization: READ-LINE is significantly faster for files containing
2962 * optimization: non-open coded uses of character comparison operators
2963 (e.g. char=) no longer cons when called with more than one parameter
2964 on platforms supporting dynamic-extent allocation.
2965 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2966 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2967 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2969 * bug fix: some sequence functions elided bounds checking when
2971 * bug fix: too liberal weakening of union-type checks when SPEED >
2973 * bug fix: more bogus fixnum declarations in ROOM implementation
2976 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2977 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2978 :SYNCHRONIZED argument, which makes the hash-table safe for
2979 concurrent accesses (but not iteration.) See also:
2980 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2981 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2982 * optimization: CONCATENATE on strings is an order of magnitude faster
2983 in code compiled with (> SPEED SPACE).
2984 * optimization: SUBSEQ is ~50% faster on lists.
2985 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2986 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2987 END is smaller then START.
2988 * bug fix: SB-PROFILE will no longer report extra consing for nested
2989 calls to profiled functions.
2990 * bug fix: ROOM implementation had bogus fixnum declarations which
2991 could cause type-errors when calling ROOM on large images.
2992 * bug fix: if file compilation is aborted, the partial fasl is now
2993 deleted, and COMPILE-FILE returns NIL as the primary value.
2994 * bug fix: number of thread safety issues relating to SBCL's internal
2995 hash-table usage have been fixed.
2996 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2997 be returned from its body when the values were being returned
2998 using unknown-values return convection and the W-P-O was wrapped
2999 inside an UNWIND-PROTECT.
3000 * bug fix: sb-posix should now compile again under Windows, enabling
3001 slime to work again.
3003 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3004 * incompatible change: hash-table accessor functions are no longer
3005 automatically protected by locks. Concurrent accesses on the same hash-table
3006 from multiple threads can give inconsistent results or even corrupt the
3007 hash-table completely. Multi-threaded applications should do their own
3008 locking at the correct granularity. In the current implementation it is
3009 still safe to have multiple readers access the same table, but it's not
3010 guaranteed that this property will be maintained in future releases.
3011 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3012 and will signal an error at runtime.
3013 * enhancement: SB-THREAD package now exports a semaphore interface.
3014 * enhancement: CONS can now stack-allocate on x86 and
3015 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3017 * enhancement: nested lists can now be stack allocated on
3018 platforms providing stack allocation support.
3019 * enhancement: dynamic-extent support has been extended to support
3020 cases where there are multiple possible sources for the stack
3022 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3023 if the mutex is uncontested on Linux.
3024 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3025 as specified by the CLHS. (thanks to Tobias Rittweiler)
3026 * bug fix: NaN comparison now works on x86-64.
3027 * bug fix: CLOSE :ABORT T on a stream with pending output now
3029 * bug fix: instances of non-standard metaclasses using standard
3030 instance structure protocol sometimes missed the slot type checks
3032 * bug fix: known functions can be inlined in high-debug code.
3034 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3035 * minor incompatible change: the MSI installer on Windows no longer
3036 associates .lisp and .fasl files with the installed SBCL.
3037 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3038 on Windows. (thanks to Luis Oliviera)
3039 * new feature: SB-CLTL2 contrib module now implements
3040 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3041 * optimization: scavenging weak pointers is now more efficient,
3042 requiring O(1) instead of O(N) per weak pointer to identify
3043 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3044 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3045 method bodies using constant slot-names when the first argument is
3046 a specializer parameter for the method.
3047 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3048 names, when the class of the instance is a direct instance
3049 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3050 as slow as the constant slot-name case.)
3051 * optimization: member type construction is now O(N) instead
3053 * optimization: UNION and NUNION are now O(N+M) for large
3054 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3056 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3057 now more readable in environments like Slime which display it.
3058 (thanks to Tobias C. Rittweiler)
3059 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3060 was able to infer the correct argument type for the object on which
3061 the CAS operation was being performed.
3062 * bug fix: copy propagation interfered with parallel assignment
3063 semantics in local calls. (reported by Paul Khuong)
3064 * bug fix: the signed modular fixnum shift compiled to wrong code on
3065 x86 and x86-64. (spotted by a slight modification to some of
3068 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3069 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3070 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3071 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3073 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3074 and generic function now print the object identity for anonymous
3075 instances. (thanks to Attila Lendvai)
3076 * enhancement: as an extension to MOP, SBCL now supports SETF of
3077 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3078 (thanks to Attila Lendvai)
3079 * enhancement: sb-cover has an alternate annotation mode which puts
3080 the form annotations at the car of the form, instead of annotating
3081 it completely. The benefit of this mode is that it shows better
3082 which forms were instrumented by the compiler.
3083 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3084 by printer control variables. (reported by Dan Corkill)
3085 * bug fix: system leaked memory when delayed output was performed by
3086 the OS in smaller chunks then expected. (thanks to David Smith)
3087 * bug fix: system leaked memory when file streams were not closed
3089 * bug fix: large objects written to slow streams that were modified
3090 after the write could end up with the modified state written to
3091 the underlying file descriptor.
3092 * bug fix: multiple threads operating in parallel on the same stream
3093 could cause buffer-overflows.
3094 * bug fix: source location information is stored correctly
3095 (broken since 1.0.6). This bug would generally show up as the
3096 Slime debugger highlighting the wrong form when the sldb-show-source
3098 * bug fix: Branch forms are again annotated as branches in the sb-cover
3100 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3101 on x86-64. (reported by Gregory Vanuxem)
3102 * bug fix: EQUALP could return wrong results for structures with raw
3103 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3104 word). (reported by Vjacheslav Fyodorov)
3105 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3108 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3109 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3110 atomic compare-and-swap operations on threaded platforms.
3111 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3112 allows assigning a global minimum value to optimization qualities
3113 (overriding proclamations and declarations).
3114 * enhancement: closed over variables can be stack-allocated on x86
3116 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3118 * optimization: slot definition lookup is now O(1). This speeds up
3119 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3120 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3121 * optimization: ASSOC and MEMBER can now be open-coded for all
3122 combinations of keyword arguments when second argument is constant
3123 and SPEED >= SPACE. In other cases a specialized version is
3125 * bug fix: using obsoleted structure instances with TYPEP and
3126 generic functions now signals a sensible error.
3127 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3128 (reported by Kristoffer Kvello)
3129 * bug fix: backtrace construction is now more careful when making
3130 lisp-objects from pointers on the stack, to avoid creating bogus
3131 objects that can be seen by the GC.
3132 * bug fix: defaulting of values in contexts expecting more than 7
3133 variables now works on x86-64. (reported by Christopher Laux)
3134 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3136 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3137 as the property-list of a symbol.
3138 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3139 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3140 situations requested, are once again file-compileable. (reported
3143 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3144 * MOP improvement: support for user-defined subclasses of
3145 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3146 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3147 the expansion of DEFMETHOD, is responsible for generating a form
3148 which creates a list of specializers when evaluated. Additional
3149 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3150 debugging and introspective support.
3151 * minor incompatible change: the (unsupported) spinlock interface
3152 has changed: free spinlock now has the value NIL, and a held spinlock
3153 has the owning thread as its value.
3154 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3155 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3157 * enhancement: name of a socket-stream is now "a socket" instead of
3158 "a constant string".
3159 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3160 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3161 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3162 for generic functions. (Thanks to Tobias C. Rittweiler)
3163 * optimization: bignum printing speed has been improved by 20-40%
3164 (depending on the bignum size.)
3165 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3167 * bug fix: the cache used by the CLOS to store precomputed effective
3168 methods, slot offsets, and constant return values is now thread and
3170 * bug fix: generic function dispatch function updating is now thread
3171 and interrupt safe (in the sense that the known issues have been
3173 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3174 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3175 * bug fix: asdf systems with dependencies to the SB-POSIX or
3176 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3177 * bug fix: interrupt safety of applicable method computation has been
3180 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3181 * new contrib: sb-cover, an experimental code coverage tool, is included
3182 as a contrib module.
3183 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3184 significantly faster.
3185 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3186 produce more efficient code on x86-64 if the compiler can determine
3187 that (+ INDEX <constant>) does not require a bounds check and FOO
3188 has an element type at least 8 bits wide.
3189 * enhancement: a new, experimental synchronous timeout facility is
3190 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3191 * enhancement: when a symbol name conflict error arises, the
3192 conflicting symbols are always printed with a package prefix.
3193 (thanks to Kevin Reid)
3194 * enhancement: stepping is now once again supported on the SPARC and
3195 MIPS platforms. (It is also now more likely to work on CheneyGC
3197 * enhancement: sb-sprof can now also track and report accurate call
3199 * bug fixes: the treatment of non-standard subclasses of
3200 SB-MOP:SPECIALIZER is more correct.
3201 * incompatible change: PURIFY no longer copies the data from the
3202 dynamic space into the static and read-only spaces on platforms
3203 that use the generational garbage collector
3204 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3206 * bug fix: GC race condition occasionally resulting in crashes with
3207 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3209 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3211 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3212 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3213 * bug fix: an asynchronous interrupt could previously leave the
3214 system running with GC inhibited.
3215 * bug fix: a DECLARE form evaluated at top-level now causes an error
3216 rather than silently (or verbosely) returning NIL.
3217 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3218 result in a error being signalled due to source form lookup errors.
3219 (reported by Peter Graves)
3221 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3222 * incompatible change: removed writer methods for host-ent-name,
3223 host-ent-addresses -- changing the values did not update the DNS
3225 * minor incompatible change: changed experimental JOIN-THREAD interface
3226 * documentation: the manual now lists reader and writer methods
3227 in class slot documentation sections. (thanks to Richard M Kreuter)
3228 * documentation: unwinding from asyncronous events has been
3229 documented as unsafe.
3230 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3231 in multithreaded application code.
3232 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3233 platforms. (thanks to James Anderson for the optimization hint)
3234 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3236 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3237 variants no longer cons.
3238 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3239 their NOT- variants no longer cons.
3240 * optimization: EQUAL hash tables no longer use SXHASH for objects
3241 of all data types, but instead use an EQL hash for types for which
3242 EQUAL is the same as EQL.
3243 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3244 are significantly faster.
3245 * optimization: new STRING-OUTPUT-STREAM implementation is much
3246 faster for large outputs and conses 30% less on average.
3247 * enhancement: XREF information is now collected for references made
3248 to global variables using SYMBOL-VALUE and a constant argument.
3249 * enhancement: SIGINT now causes a specific condition
3250 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3251 * bug fix: FILE-POSITION used to signal an error in some cases where
3252 ANSI requires it to return NIL.
3253 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3254 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3255 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3257 * bug fix: bad type declaration in the CLOS implementation has
3258 been fixed. (reported by James Anderson)
3259 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3260 (thanks to Lutz Euler)
3261 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3262 required by the CLHS. (reported by Samium Gromoff)
3263 * bug fix: dead unbound variable references now signal an error.
3264 (reported by Marco Monteiro)
3265 * bug fix: / with an unused value was being deleted in safe code.
3266 (thanks to Marco Monteiro and Kevin Reid)
3267 * bug fix: number of characters that can be written onto a single
3268 line in a file is unlimited.
3269 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3270 been fixed by inhibiting interrupts for when GC is disabled.
3271 * bug fix: some interrupt safety issues with GETHASH, (SETF
3272 GETHASH), CLRHASH and REMHASH have been fixed.
3273 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3274 specifier no longer causes infinite recursion.
3275 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3276 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3277 * bug fix: an &environment argument with the correct variable information
3278 is passed to macros that are expanded during byte compilation.
3279 (reported by Samium Gromoff)
3280 * bug fix: a logic error was causing the hash function for bignums to
3281 have excessive amounts of collisions. (reported by Faré Rideau)
3282 * bug fix: modifying the contents of an array could change the return
3283 value of SXHASH on that array, which is only allowed for strings
3284 and bit vectors. (bug introduced in 0.9.16)
3285 * improvement: the x86-64/darwin port now passes all tests (except
3286 for the debugger tests) but should still be considered
3287 experimental until this is fixed.
3288 * improvement: a style-warning is signaled for CASE (etc) clauses with
3289 duplicate keys. (thanks to Kevin Reid)
3290 * improvement: macos/x86 and macos/x86-64 now use mach exception
3291 handlers for dealing with illegal instructions (for trapping and
3292 error handling) and memory protection violations (for GC).
3294 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3295 * new platform: experimental support for x86-64/darwin (MacOS).
3296 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3297 and getnameinfo sockets functions are used instead of gethostbyaddr
3298 and gethostbyname, on platforms where the newer functions are available.
3299 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3301 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3302 don't print the startup banner, but behave as if --noinform was passed
3303 as a command line argument. (thanks to Kevin Reid)
3304 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3305 * optimization: code using alien values with undeclared types is much faster.
3306 * optimization: the compiler is now able to open code SEARCH in more cases.
3307 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3308 * bug fix: using standardized COMMON-LISP special variables as loop
3309 variables no longer signals bogus package lock violations. (reported
3311 * bug fix: declaring local loop variables to be of a range-limited type
3312 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3313 (reported by Andras Simon)
3314 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3315 bugs remain on x86-64.)
3316 * bug fix: the #= and ## reader macros now interact reasonably with
3317 funcallable instances.
3318 * bug fix: type-checks for function arguments were compiled using the
3319 compiler policy settings of the wrong lexical environment (in 1.0.2
3321 * bug fix: SHADOW accepts characters as string designators, as required
3322 by the spec (thanks to Eric Marsden)
3323 * bug fix: fixed GC safety issues when foreign functions are called with
3324 non-base strings as arguments
3325 * bug fix: more consistent error output for fatal-compiler-warnings, like
3327 * bug fix: functions with proper names were showing up as NIL in
3328 backtraces (reported by Edi Weitz, regression in 1.0.2)
3330 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3331 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3332 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3333 produce more efficient code on the x86 if the compiler can determine
3334 that (+ INDEX <constant>) does not require a bounds check and FOO
3335 has an element type at least 8 bits wide.
3336 * bug fix: references to undefined variables are handled the same way
3337 in toplevel forms as in the normal compiler
3338 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3340 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3341 (thanks to Jon Buller)
3342 * improvement: faster compilation times for complex functions
3343 * improvement: added readlink support to SB-POSIX (thanks to Richard
3346 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3347 * improvement: experimental support for mach exception handling on
3348 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3350 * improvement: support for GBK external format.
3351 (thanks to Chun Tian (binghe))
3352 * improvement: the debugger now displays variables that have been closed
3353 over, in code compiled with (DEBUG 2) or higher
3354 * improvement: support for executable cores on NetBSD (thanks to
3356 * new feature: added a RESTART-FRAME debugger command
3357 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3358 be used to provide an implementation for FILE-POSITION on Gray streams
3359 (thanks to Eric Marsden)
3360 * new feature: add syslog, openlog and closelog support to SB-POSIX
3361 (thanks to Richard Kreuter)
3362 * optimization: the function call overhead in code compiled with
3363 a high DEBUG optimization setting is significantly
3364 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3365 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3366 (thanks to Tony Martinez)
3367 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3368 evaluated once (reported by Kevin Reid)
3369 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3370 works again (thanks to Kilian Sprotte)
3371 * bug fix: an error is signaled for tagbodies with duplicate tags
3372 (thanks to Stephen Wilson)
3373 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3374 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3375 stack frames from alien callbacks.
3376 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3377 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3378 65k pages (thanks to David Woodhouse)
3379 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3381 changes in sbcl-1.0.1 relative to sbcl-1.0:
3382 * new platform: FreeBSD/x86-64, including support for threading.
3383 * new feature: the compiler stores cross-referencing information
3384 about function calls (who-calls), macroexpansion (who-macroexpands)
3385 and special variables (who-binds, who-sets, who-references) for code
3386 compiled with (< SPACE 3). This information is available through the
3387 sb-introspect contrib.
3388 * new feature: users may subclass SEQUENCE, and have instances of
3389 these classes interoperate with standard Common Lisp functions if
3390 a number of methods are defined. (This feature is experimental
3391 and the interface subject to change based on feedback from SBCL
3392 users and the general community)
3393 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3394 x86/x86-64, rather than the previous fixed depth of 8
3395 * improvement: another pthread back-end of mutex "pthread-futex".
3396 * bug fix: non-ascii command-line arguments are processed correctly
3397 (thanks to Yaroslav Kavenchuk)
3398 * bug fix: non-required arguments were not passed correctly when a method
3399 defined using DEFMETHOD was called from a mop-generated method using
3400 CALL-NEXT-METHOD (reported by Pascal Costanza)
3401 * bug fix: recursion is now permitted in accessors through
3402 SLOT-UNBOUND. (reported by Pascal Costanza)
3403 * bug fix: an error was signaled at startup if the HOME environment
3404 variable was defined, but had an empty value (reported by Peter Van Eynde)
3405 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3406 signal a PROGRAM-ERROR, not a BUG.
3407 * bug fix: SB-POSIX:READDIR works when built with large file support.
3408 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3410 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3411 for better automatic indentation support. (thanks to Matt Pillsbury)
3412 * optimization: loading generic functions no longer takes O(n^2) time,
3413 proportional to the amount of methods in the generic function
3414 (reported by Todd Sabin and Jeremy Brown)
3415 * optimization: the FIND and POSITION family of sequence functions
3416 are significantly faster on arrays whose element types have been
3418 * improvements to the Windows port:
3419 ** Intermittent heap corruption problems have been fixed. (thanks
3420 to Alastair Bridgewater)
3421 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3423 ** Lisp is able to unwind foreign exception frames from alien
3424 callbacks. (thanks to Alastair Bridgewater)
3426 changes in sbcl-1.0 relative to sbcl-0.9.18:
3427 * improvement: experimental support for threading on FreeBSD/x86.
3428 (thanks to NIIMI Satoshi)
3429 * improvement: runtime option --dynamic-space-size can be used
3430 to set the size of the dynamic space reserved on startup.
3431 * improvement: floating point modes in effect are now saved in
3432 core, and restored on startup.
3433 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3434 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3435 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3436 threads are not running after *SAVE-HOOKS* have run.
3437 * improvement: writes to CLOS instance slots are type-checked in code
3438 compiled with (SAFETY 3)
3439 * improvement: floating-point exception handling on FreeBSD (thanks to
3441 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3442 (thanks to Zach Beane)
3443 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3445 * improvement: added support for the Shift-JIS external format.
3446 (contributed by NIIMI Satoshi)
3447 * improvement: callbacks are supported on Linux/PPC. (thanks to
3449 * bug fix: compiler bug triggered by a (non-standard) VALUES
3450 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3451 * bug fix: file compiler no longer confuses validated and already
3452 dumped structurres. (reported by Kaersten Poeck)
3453 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3454 fill-pointer signals a type-error as required. (thanks to
3456 * bug fix: disassemly of funcallable instances works.
3457 * bug fix: single stepping on PPC.
3458 * bug fix: fix thread-safety problems in the type system (generally
3459 manifesting as nonsensical errors like "STRING is a bad type specifier
3460 for sequences" or "The value 1 is not of type FIXNUM")
3461 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3462 (reported by Josip Gracin)
3463 * bug fix: an error is signaled for attempts to displace arrays with
3464 incompatible element types (thanks to Mario Mommer)
3465 * bug fix: more correct handling of wide characters in debug info
3466 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3467 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3468 and don't cause extra consing
3469 * optimization: MAP and MAP-INTO are significantly faster on vectors
3470 whose elements types have been declared.
3471 * Improvements to SB-SPROF:
3472 ** Support for allocation profiling
3473 ** Reduced profiling overhead, especially for long profiling runs
3474 * Improvements to the Windows port:
3475 ** floating point exceptions are now reported correctly.
3476 ** stack exhaustion detection works partially.
3477 ** more accurate GET-INTERNAL-REAL-TIME.
3478 ** better RUN-PROGRAM behaviour in case of errors in the child
3480 ** PROBE-FILE now simplifies pathnames correctly.
3481 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3482 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3483 1st 1970 (although time timezone data will be unreliable).
3484 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3486 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3487 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3488 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3490 * bug fix: two potential GC deadlocks affecting threaded builds.
3491 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3492 returns T (reported by Anton Kazennikov)
3493 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3494 with non-variable places
3495 * bug fix: remove a race condition in the setting of
3496 funcallable-instance functions, this should make threaded CLOS
3497 code more stable against memory faults.
3498 * bug fix: corruption of specials when unbinding is interrupted by an
3499 asynchronous unwind (reported by Hannu Koivisto)
3500 * improvement: the debugger will now also display local variables that
3501 are only used once, for code compiled with a DEBUG optimization quality
3504 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3505 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3506 * incompatible change: External-format support for FFI calls. The
3507 SB-ALIEN:C-STRING no longer implies an ASCII
3508 external-format. Instead the string is subject to external-format
3509 conversion. Additionally return values of type SB-ALIEN:C-STRING
3510 are by default of type (SIMPLE-ARRAY CHARACTER), not
3511 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3512 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3513 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3514 * incompatible change: SB-EXT package no longer contains the
3515 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3516 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3518 * incompatible change: the single-stepper is no longer available
3519 on Alpha, Mips and Sparc platforms.
3520 * minor incompatible change: the direct superclasses of
3521 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3522 not (STANDARD-OBJECT FUNCTION). This makes the
3523 class-precedence-lists of GENERIC-FUNCTION and
3524 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3526 * minor incompatible change: the default stream external format on
3527 non-unicode SBCL is no longer detected from the locale, but is always
3529 * new feature: Add a version of evaluator that uses an interpreter instead
3530 of the compiler. EVAL still uses the compiler by default, to switch it
3531 to use the interpreter, set the value of the variable
3532 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3533 * minor incompatible change: the single-stepper REPL has been merged
3534 with the normal debugger (see the "Stepping" heading of the debugger help
3535 for more details). The debugger command STEP will no longer switch
3536 to the single-stepper REPL.
3537 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3538 for a type now works.
3539 * bug fix: loading of default sysinit file works. (thanks to Leonid
3541 * bug fix: better detection of circularities in the file-compiler.
3542 (reported by Marco Monteiro)
3543 * bug fix: the CL pathname functions now work with files that have
3544 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3545 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3546 systems with Unix98 pty semantics.
3547 * bug fix: ASDF-INSTALL will now work with bsd tar.
3548 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3550 * bug fix: timers expiring in dead threads no longer cause a
3551 type-error (reported by Paul "Nonny Mouse").
3552 * bug fix: thanks to more lightweight single-stepper instrumentation,
3553 code compiled with (DEBUG 3) will compile and execute significantly faster,
3554 and will have more accurate type-inferencing than before
3555 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3556 whose bindings are modified
3557 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3558 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3559 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3560 CL:SOFTWARE-VERSION with proper version
3562 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3563 * feature: implemented the READER-METHOD-CLASS and
3564 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3565 as specified by AMOP.
3566 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3568 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3569 (thanks to Lutz Euler)
3570 * optimization: hashing of general arrays and vectors has been
3571 improved. (reported by Any Fingerhut)
3572 * enhancement: SB-INTROSPECT is now able to find definitions of
3573 profiled functions. (thanks to Troels Henriksen)
3574 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3575 as well, allowing compiler-macros for SETF-functions to expand.
3576 * enhancement: step-instrumentation no longer wraps known
3577 single-value functions with multiple-value context, allowing
3578 better type inference.
3579 * fixed bug #337: use of MAKE-METHOD in method combination now works
3580 even in the presence of user-defined method classes. (reported by
3581 Bruno Haible and Pascal Costanza)
3582 * fixed bug #339(c): if there are applicable methods not part of any
3583 long-form method-combination group, call INVALID-METHOD-ERROR.
3584 (reported by Bruno Haible)
3585 * fixed bug #361: the :FUNCTION initarg in the protocol for
3586 initialization of methods can now be used to override
3587 internally-produced optimized functions. (reported by Bruno
3589 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3590 system-provided lambda expression no longer cause warnings about
3591 unbound #:|pv-table| symbols.
3592 * bug fix: improved the handling of type declarations and the
3593 detection of violations for keyword arguments with non-constant
3595 * bug fix: potentially erronous calls to PATHNAME and
3596 MERGE-PATHNAMES were being flushed in some cases.
3597 (reported by Richard Kreuter)
3598 * bug fix: compiled calls to TYPEP were mishandling obsolete
3599 instances. (reported by James Bielman and Attila Lendvai)
3600 * bug fix: format strings with ~> without matching ~< no longer
3601 trigger an AVER, but signal an understandable error instead.
3602 (reported by Antonio Martinez)
3603 * bug fix: specifying an output-file without a pathname-type for
3604 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3605 of input-file instead of "fasl". (reported by Robert Dodier)
3606 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3607 (reported by James Y Knight).
3608 * bug fix: compiler-macros-function did not consider the environment
3609 argument for shadowing by local functions.
3610 * bug fix: compiler-macros expansion was inhibited by local INLINE
3612 * bug fix: inline expansions of known functions were subject to
3613 step-instrumentation in high debug policies, leading to problems
3614 with type-inference.
3615 * bug fix: compiler failed to differentiate between different CONS
3616 types in some cases.
3617 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3618 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3619 * bug fix: #368: incorrect use of expressed vs. upgraded array
3621 * bug fix: #306a: more precise unions of array types.
3622 * thread-safety improvements:
3623 ** CONDITION-WAIT could return early on Linux, if the thread was
3624 interrupted and subsequently continued with SIGCONT.
3625 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3627 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3628 * added support for the ucs-2 external format. (contributed by Ivan
3630 * minor incompatible change: pretty printing of objects of type
3631 (cons symbol) is, in the default pprint-dispatch-table, now
3632 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3634 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3635 called later in a class's lifetime, possibly as late as when the
3636 first instance of the class is created. Previously,
3637 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3638 class became finalizeable.
3639 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3640 for multibyte external-format streams. (thanks to "vbzoli")
3641 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3642 with :ALLOCATION :CLASS inherited from superclasses of the
3644 * fixed bug: anonymous classes can now be created using the :NAME
3645 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3646 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3647 * fixed bug: core-files saved with :EXECUTABLE T can again be
3648 executed when SBCL_HOME isn't set. (reported by James Knight)
3649 * fixed bug: toplevel LOCALLY forms with declarations could
3650 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3651 * fixed bug: printing from several different threads using different
3652 values of *print-case* could cause invalid output, due to
3653 some internal special variables of the printer not being bound
3654 thread-locally (reported by Max Mikhanosha)
3655 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3656 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3657 (reported by Pascal Costanza)
3658 * fixed bug: FINALIZE-INHERITANCE is called from
3659 REINITIALIZE-INSTANCE on classes when the class has previously
3660 been finalized, as required by AMOP.
3661 * minor code generation optimizations:
3662 ** better register allocation in CLOS dispatching functions
3663 ** overflow detection when coercing signed bytes to fixnums on x86-64
3664 ** is now implemented with one IMUL instruction instead of three shifts
3665 ** more efficient bit-vector access on x86 and x86-64
3666 ** more efficient access to raw structure slots on x86 and x86-64
3667 * fixed some bugs revealed by Paul Dietz' test suite:
3668 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3669 return its argument.
3671 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3672 * feature: thread support on Solaris/x86, and experimental thread support
3674 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3676 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3677 default method for SLOT-UNBOUND.
3678 * minor incompatible change: prevent the user from specializing the
3679 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3680 somewhat counter to the intent of the protocol, I (CSR) think, and
3681 additionally it just doesn't work in SBCL as currently
3682 implemented, thanks to optimizations (that are always valid for
3683 the other three SLOT-VALUEish functions, but not for the setter).
3684 * minor incompatible change: the :SB-LDB feature is now enabled by
3685 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3686 the low-level debugger.
3687 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3688 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3689 down to an SB-SYS:FD-STREAM, allowing direct communication in
3690 more cases. Temporary files and pipes are still used as a fallback
3692 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3693 on the non-reentrant C functions localtime(3) and gmtime(3).
3694 * bug fix: global optimization policy was not visible in LOCALLY and
3696 * bug fix: class objects can be used as specializers in methods.
3697 (reported by Pascal Costanza)
3698 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3699 with a type error. (reported by blitz_ on #lisp)
3700 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3701 failed with a type error. (reported by Pascal Bourguignon)
3702 * bug fix: merging pathnames against defaults with :DIRECTORY
3703 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3704 (reported by James Y Knight)
3705 * bug fix: saving large (>2GB) cores on x86-64 now works
3706 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3707 constant index and a (simple-array (signed-byte 32)) array
3708 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3709 error (patch by Robert J. Macomber)
3710 * feature: TIME now displays the amount of run-time spent in GC
3711 * bug fix: The debugger now does a better job of respecting
3712 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3713 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3714 workaround for bug 403.)
3715 * bug fix: floating point exception handling now works on FreeBSD
3716 (thanks to NIIMI Satoshi)
3717 * fixed some bugs revealed by Paul Dietz' test suite:
3718 ** MISC.641: LET-conversion were not supposed to work in late
3720 * improvements to the Win32/x86 port:
3721 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3722 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3724 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3725 * new feature: source path information is generated for macro-expansion
3726 errors for use in IDE's like Slime (thanks to Helmut Eller)
3727 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3728 * bug fix: compiler does not loop forever on an invalid type in
3730 * improvement: compilation of most CLOS applications is significantly
3732 * optimization: added a limited bytecode compiler for simple toplevel
3733 forms, speeding up compilation and FASL loading
3734 * bug fix: the statistical profiler now properly distinguishes anonymous
3737 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3738 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3739 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3740 into subclasses of the finalized class. Now user calls to
3741 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3742 system return before any subclasses are finalized.
3743 * minor incompatible change: The reader no longer ignores errors
3744 regarding non-existent packages in #+ and #- feature tests.
3745 * new feature: command line options --no-sysinit, --no-userinit to
3746 inhibit loading the corresponding init files
3747 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3748 for sending data through UDP sockets (thanks to François-René Rideau)
3749 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3750 error is signalled instead (thanks to François-René Rideau)
3751 * minor incompatible change: Error signalling behaviour of lexical
3752 operations violating package locks has changed slightly. Refer to
3753 documentation on package locks for details.
3754 * enhancement: EVAL can process IF-expressions without resorting to the
3756 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3757 constant-folded properly due to missing out-of-line functions.
3758 (reported by Mika Pihlajamäki)
3759 * bug fix: LISTEN sometimes returned T even in cases where no data was
3760 immediately available from the stream
3761 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3762 were reversed. (reported by Levente Mészáros)
3763 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3764 when given a vector displaced to an adjustable array. (reported
3766 * bug fix: derivation of float boundaries from numbers outside the
3767 appropriate float range (reported by John Wiseman)
3768 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3770 * bug fix: precomputing cache entries for generic functions with
3771 some subclasses of specializers as yet invalid does not attempt to
3772 fill a cache line with a negative offset. (reported by Levente
3774 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3775 allow condition class objects as arguments to DOCUMENTATION and
3776 (SETF DOCUMENTATION); only find and set documentation for
3777 structure names for the STRUCTURE doc-type. (suggested by Gary
3779 * improvements to the Win32/x86 port:
3780 ** (user-homedir-pathname) and default initialization file
3781 locations now know about the user's "Documents and Settings"
3782 directory (thanks to Yaroslav Kavenchuk)
3783 ** run-program is implemented (thanks to Mike Thomas)
3784 ** sockets support (thanks to Timothy Ritchey)
3785 ** better backtrace support (thanks to Alastair Bridgewater)
3786 ** sb-grovel supported
3787 ** asdf-install and sb-posix work somewhat
3788 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3789 * improvements to the Solaris/x86 port:
3790 ** works on Solaris 11/Solaris Express
3791 ** floating-point exception handling support
3792 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3793 * fixed some bugs revealed by Paul Dietz' test suite:
3794 ** REMOVE-METHOD returns its generic function argument even when
3795 the method is not one of the generic functions' methods.
3796 ** objects declared as MEMBER types can be admissible arguments to
3797 structure accessors.
3798 ** printing characters should simply be printed by the FORMAT ~:C
3800 ** compiler failure when compiling functions with hairy constant
3801 defaults for optional parameters.
3802 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3803 function, which is already optimized.
3805 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3806 * new platform: experimental support for SBCL x86/Darwin, including
3807 MacOS X 10.4.5 on Intel.
3808 * new feature: Unicode character names are now known to the system
3809 (through CHAR-NAME and NAME-CHAR).
3810 * new feature: the filesystem location of SBCL's core file is
3811 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3812 * minor incompatible change: the contrib modules SB-POSIX and
3813 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3814 this change is to make it easier to distribute
3815 location-independent binaries.
3816 * bug fix: as implied by AMOP, standardized classes no longer have
3817 slots named by external symbols of public packages. (reported by
3819 * optimization: calling functions via constant symbols -- as in
3820 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3821 via the function object as in (FUNCALL #'FOO).
3822 * optimization: on x86 and x86-64, the calling convention for the
3823 case of dealing with an unknown number of values has been altered
3824 to be friendlier to the prediction heuristics implemented,
3825 particularly with reference to CALL and RET pairing. (thanks to
3826 Alastair Bridgewater)
3827 * optimization: on x86, the code for access to thread-local symbol
3828 values and binding/unbinding of thread-local symbols is smaller.
3829 (thanks to Alastair Bridgewater)
3830 * enhancement: CONSTANTP is now able to determine constantness of
3831 more complex forms, including calls to constant-foldable standardized
3832 functions and some special forms beyond QUOTE.
3833 * fixed bug: occasional GC crashes on Solaris/x86
3834 * optimization: x86-64 supports stack allocation of results of simple
3835 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3836 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3837 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3838 (thanks to James Knight)
3839 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3840 by the standard (thanks to Stephen Compall)
3842 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3843 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3844 be used for bundling the runtime and the core file into one
3845 executable binary. This feature is not currently supported on all SBCL
3846 platforms. (thanks to James Bielman and NIIMI Satoshi)
3847 * new feature: a generational or ephemeral garbage collector is now
3848 the default on the PowerPC platform (both Linux and Darwin). The
3849 old Cheney (stop and copy) collector is a build-time option.
3850 (thanks to Cyrus Harmon, after Raymond Toy)
3851 * minor incompatible change: the method by which SBCL finds its
3852 contributed modules has changed; it no longer relies on symbolic
3853 links from an $SBCL_HOME/systems directory, but searches directly
3854 in the subdirectories of $SBCL_HOME.
3855 * enhancement: the dynamic heap size on the Linux/PPC platform is
3856 markedly larger, even using the older Cheney garbage collector.
3857 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3858 certain complicated string types. (reported by Gary King)
3859 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3860 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3861 * fixed bug: DOCUMENTATION on structures no longer signals an
3862 error if no structure type of the right name exists. (reported by
3864 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3865 applicable non-standard primary or :AROUND method on
3866 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3867 no longer cause unbound variable errors. (reported by Kevin Reid)
3868 * fixed bug: metacircle resolution in cases where methods have slots
3869 added before the slots from STANDARD-METHOD. (reported by Jean
3871 * fixed bug: the Power PC assembly code for calling into lisp
3872 sometimes computed its return address wrongly (depending on the
3873 15th bit of the address, fixed at link time). This used to
3874 manifest itself in a segmentation violation while building PCL.
3875 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3876 many others over the years)
3877 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3878 the stack pointer (treated as a signed integer) is negative.
3879 (thanks to Peter van Eynde)
3881 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3882 * new platform: experimental support for the Windows operating
3883 system has been added. (thanks to Alastair Bridgewater)
3884 * fixed several bugs in and robustified the PPC FFI (including
3885 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3886 * bug fix: allow non-simple string symbol names (reported by Paul
3888 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3890 * bug fix: saving a core corrupted callbacks on x86/x86-64
3891 * bug fix: closed a loophole in metacircularity detection and
3892 grounding in the PCL implementation of CLOS.
3893 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3894 (reported by tomppa on #lisp)
3895 * bug fix: clear the direction flag on Lisp -> C transitions, as
3896 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3897 (reported by Andrej Grozin and Hendrik Maryns)
3898 * optimization: major improvements to GC efficiency on GENCGC platforms
3899 * optimization: faster implementation of EQUAL
3900 * optimization: emit more efficient opcodes for some common
3901 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3902 * optimization: several other minor code-generation improvements on x86-64
3903 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3905 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3906 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3907 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3908 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3909 by ANSI as a generic function, and for consistency (SETF
3910 GENERIC-FUNCTION-NAME) is treated likewise.
3911 * fixed bug #233.b: make constraint propagation notice when a variable
3912 value is changed after it is referenced but before it is used
3913 * fixed bug #296: no more arbitrary behaviour from filenames with
3914 odd characters as --load arguments. (reported by Adam Warner)
3915 * fixed bug #390: :CHARACTER-SET pathname components now work as
3916 expected. (reported by Tim Daly Jr)
3917 * fixed bug #391: complicated :TYPE intersections in slot
3918 definitions no longer cause an error in PCL internals.
3919 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3920 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3921 returning the number of octets which would be written to the
3922 file-stream. (thanks to Robert J. Macomber)
3923 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3924 arguments to the internal stream functions. (thanks to David
3926 * bug fix: stack exhaustion is now handled on the x86/SunOS
3927 platform. (thanks to Daisuke Homma)
3928 * bug fix: more accurate ROOM results on GENCGC platforms
3929 * optimization: improved type inference for arithmetic-for
3930 index variables in LOOP
3931 * optimization: faster floating-point SQRT on x86-64
3932 * fixed some bugs revealed by Paul Dietz' test suite:
3933 ** DOCUMENTATION returns NIL instead of "" for method combinations
3934 that don't have a docstring
3936 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3937 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3938 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3939 therefore are not customizeable by user code (as seems to be at
3940 least permitted and maybe required by AMOP). As a consolation,
3941 however, the SBCL implementation of these functions now calls
3942 REINITIALIZE-INSTANCE as specified by AMOP.
3943 * bug fix: slot-definition documentation is propagated as per ANSI
3944 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3945 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3946 argument, as do eslotd initialization methods. (from Pascal
3947 Costanza's "Closer" project)
3948 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3949 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3951 * bug fix: it is now possible to have more than one subclass of
3952 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3953 (reported by Bruno Haible, Pascal Costanza and others)
3954 * bug fix: the dependent update protocol now works for generic
3955 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3956 and Pascal Costanza)
3957 * bug fix: condition-class instances corresponding to
3958 DEFINE-CONDITION forms are now created eagerly. (reported by
3959 Kalle Olavi Niemitalo on comp.lang.lisp)
3960 * bug fix: floating point printing is more accurate in some
3961 circumstances. (thanks to Simon Alexander)
3962 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3963 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3964 * bug fix: callbacks on OS X now preserve stack-alignment.
3965 (thanks to Cyrus Harmon)
3966 * enhancement: the x86-64 disassembler is much better at
3967 disassembling SSE instructions. (thanks to Lutz Euler)
3968 * enhancement: CHECK-TYPE on a variable now allows type-inference
3969 (thanks to Vincent Arkesteijn)
3970 * optimization: improved performance of EUC-JP external format.
3971 (thanks to NIIMI Satoshi)
3972 * optimization: performance improvements to IO on file streams of
3973 :ELEMENT-TYPE CHARACTER
3974 * optimization: much faster memory allocation on x86-64
3975 * optimization: faster garbage collections (latency and throughput)
3977 * optimization: faster bignum subtraction and division on x86 and x86-64
3978 (thanks to Lutz Euler)
3979 * optimization: more accurate type-inference for loops that use a
3980 floating point index variable or a negative step.
3982 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3983 * bug fix: add a workaround to SBCL looping infinitely at startup on
3984 Linux kernels with apparently buggy implementations of personality().
3985 (thanks to Svein Ove Aas)
3986 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3987 (thanks to David Lichteblau)
3988 * bug fix: local bindings shadow global symbol macros for
3989 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3990 * optimization: non-open coded uses of numeric comparison operators
3991 (e.g. >) no longer cons when called with more than one parameter
3992 on platforms supporting dynamic-extent allocation.
3993 * enhancement: saving cores with foreign code loaded is now supported
3994 on MIPS/Linux in addition to the previously supported platforms.
3995 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3996 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3997 * bug fix: division by zero in sb-sprof when no samples were collected
3998 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3999 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4000 (thanks to Alexander Kjeldaas)
4001 * new feature: ignoring the return values of destructive functions
4002 like NREVERSE signals a compile-time style-warning.
4003 (thanks to Kevin Reid)
4004 * new feature: the alignment of alien structure fields can be
4005 explicitly specified. (thanks to Cyrus Harmon)
4006 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4007 and dump core on SIGQUIT
4009 ** incompatible change: threads do not inherit values of specials
4010 from their parents (see manual)
4011 ** bug fix: threads stacks belonging to dead threads are freed by the
4012 next exiting thread, no need to gc to collect thread stacks anymore
4013 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4014 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4015 ** bug fix: dynamic variable and thread start related gc lossage
4016 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4018 * fixed some bugs revealed by Paul Dietz' test suite:
4019 ** SUBTYPEP is slightly more accurate on heinously complicated
4020 CONS types where some of the members have uncertain (in the
4021 NIL, NIL sense) type relationships to each other.
4023 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4024 no longer purified unless :PURIFY T is explicitly specified.
4025 ** Non-purified cores are significantly smaller than before
4027 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4028 * new feature: timers based on Zach Beane's excellent timer package
4029 * added support for the following external formats: koi8-u,
4030 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4031 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4032 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4033 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4034 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4035 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4036 * incompatible change: a threaded SBCL will no longer revert to
4037 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4038 * bug fix: interrupts are disabled until startup is complete; no
4039 more sigsegvs when receiving a signal to soon
4040 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4042 * bug fix: add a workaround for the memory randomization features in
4043 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4044 workaround will only be in effect on systems with the proc filesystem
4046 * bug fix: printing objects of type HASH-TABLE signals a
4047 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4049 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4050 have been running for over 50 days. (reported by Gilbert Baumann)
4051 * bug fix: the logic for getting names of functions gets less
4052 confused when confronded with alternate-metaclass
4053 funcallable-instances. (reported by Cyrus Harmon)
4054 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4055 consistent, even on internal alternate-metaclass objects.
4056 * bug fix: flush closure information collected by physical
4057 environment analysis prepass before the main pass. (bug reported
4059 * bug fix: compiler pack phase does not modify a hashtable, which is
4060 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4061 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4062 may be expanded. (reported by Alexander <malishev> on c.l.l)
4063 * bug fix: no more style-warnings when compiling code using LAST
4064 under high-SPEED low-SPACE settings. (reported by David Wallin
4066 * fixed some incompatibilities between SBCL's MOP and the MOP
4068 ** the METAOBJECT class is now implemented;
4069 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4070 STANDARD-OBJECT, as required;
4071 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4072 now compatible (as required by VALIDATE-SUPERCLASS); there
4073 remains a consistency requirement over the presence or absence
4074 of the FUNCTION class in the superclass list of finalized
4075 classes; see the manual for more details;
4076 ** the :AROUND method for COMPUTE-SLOTS on
4077 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4078 requested slot ordering.
4080 ** bug fix: parent thread now can be gc'ed even with a live
4082 ** bug fix: binding a special with PROGV to no value is not
4083 the same as that symbol not having been bound (thanks to
4085 ** bug fix: binding specials is thread safe (thanks to
4087 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4088 and SB-SPROF do not die with 'no handler for signal XX in
4089 interrupt_handle_now(..)' anymore
4090 ** bug fix: WITH-TIMEOUT works with multiple running threads
4091 * fixed some bugs revealed by Paul Dietz' test suite:
4092 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4093 the :method-class keyword argument.
4095 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4096 * new port: the Solaris operating system on x86 processors is now
4097 mostly supported, though some rough edges in the environment
4098 remain. (thanks to Daisuke Homma)
4099 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4100 space for its heap. (thanks to Thiemo Seufer)
4101 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4102 closures. (thanks to Thiemo Seufer)
4103 * minor incompatible change: eof selects abort in the debugger.
4104 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4105 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4107 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4108 deprecated, and will go away in a future revision of SBCL.
4109 * minor incompatible change: GC-ON and GC-OFF are no longer
4110 implemented with a counter, it does not matter how many times gc
4111 is switched on or off
4112 * bug fix: discriminating functions for generic function classes
4113 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4114 make invalid assumptions about method precedence order. (reported
4116 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4117 platforms. (thanks to Thiemo Seufer)
4118 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4119 * bug fix: correct pathname printing with printer escaping is on.
4120 (thanks to Kevin Reid)
4121 * bug fix: complex VOP definitions in "user-space" no longer trigger
4122 package locks. (reported by Zach Beane)
4123 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4124 for funcallable-instance functions, and is no different from
4126 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4127 characters in the current readtable. (reported by Nicholas Neuss)
4128 * bug fix: SUBTYPEP on various CONS types returns more a more
4129 accurate acknowledgment of its certainty.
4130 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4131 lists in some cases. This partially fixes bug 384.
4132 * flush all standard streams before prompting in the REPL and the
4134 * bug fix: signal handling and triggering gc do not conflict
4135 directly anymore, in particular a high frequency sb-sprof does
4136 not prevent gc from running
4137 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4138 approximation for timezone and DST information between the
4139 universal time epoch and the smallest negative 32-bit time_t.
4140 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4141 year 1899 so long as the encoded time is non-negative.
4142 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4143 the correct answer for non-constant rotate amounts when performing
4144 an inline 32-bit rotation.
4146 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4147 there is only one thread in the session
4148 ** bug fix: memory leak for streams created in one thread and
4149 written to in another
4150 ** bug fix: lockup when compiled with gcc4
4151 ** bug fix: race that allows the gc to be triggered when gc is
4153 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4154 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4156 ** bug fix: finished threads are gc'ed properly
4157 * fixed some bugs revealed by Paul Dietz' test suite:
4158 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4159 has arguments with a different set of applicable methods from
4160 the orignal arguments.
4161 ** The type error thrown by MAP now has a correct expected-type
4163 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4164 name a compiled function.
4165 ** Three MISC tests where a large bignum was improperly coerced to
4166 a float that couldn't represent that bignum during type
4167 derivation were fixed.
4168 ** SUBTYPEP can now handle types involving the negation of a
4169 list-form FUNCTION type.
4170 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4171 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4172 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4174 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4175 * New feature: Experimental support for bivalent streams: streams
4176 opened with :element-type :default now allow character and binary
4177 (unsigned-byte 8) I/O
4178 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4179 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4181 * bug fix: no more highly sporadic "couldn't check whether ~S is
4182 readable" when reading a stream and an interrupt hits in the middle
4183 of a select system call
4184 * compiler better recognizes complex arrays (reported by Eduardo
4186 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4187 for variables on SBCL built with linkage-tables. (reported by Luis
4189 * various error reporting improvements.
4190 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4191 (Thanks to Thiemo Seufer)
4192 * bug fix: nested reader invokations work correctly
4193 * bug fix: it is possible to have simultaneous references to foreign
4194 code and foreign data with the same name.
4196 ** added x86-64 support
4197 ** incompatible change: the threading api now works with thread
4198 objects instead of thread ids
4199 ** bug fix: threads are protected from signals and interruption when
4200 starting up or going down
4201 ** bug fix: a race where an exiting thread could lose its stack to gc
4202 ** bug fix: don't halt on infinite error in threads if possible
4203 ** fixed numerous gc deadlocks introduced in the pthread merge
4204 ** bug fix: fixed thread safety issues in read and print
4205 ** bug fix: debugger doesn't hang on session lock if interrupted at
4206 an inappropriate moment
4207 ** bug fix: run-program is now thread safe(r)
4208 ** bug fix: inner with-recursive-lock no longer releases the mutex
4209 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4210 * fixed some bugs revealed by Paul Dietz' test suite:
4211 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4212 EXPECTED-TYPE slots filled.
4213 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4215 ** MAKE-CONDITION accepts classes as type-designators.
4216 ** COMPILE may never return NIL.
4217 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4218 range before calling Unix time functions
4220 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4221 * numerous signal handling fixes to increase stability
4222 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4223 * minor incompatible change: we now correctly canonize default
4224 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4225 as per the MOP, rather than the historical (INITARG INITFUNCTION
4226 INITFORM). (reported by Bruno Haible)
4227 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4228 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4229 for more information.
4230 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4231 pathname is a directory pathname.
4232 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4233 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4235 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4236 :METACLASS argument in addition to a class name. (reported by
4237 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4238 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4239 (reported by Bruno Haible; patch from Gerd Moellmann)
4240 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4242 * bug fix: more cleanups to the floating point exception handling on
4243 x86-64 (thanks to James Knight)
4244 * bug fix: the compiler does not try to constant fold calls of
4245 COERCE and BIT-* functions when they return freshly constructed
4246 objects. (reported by Nikodemus Siivola and Paul Dietz)
4247 * optimization: improved the MIPS versions of generic (in the
4248 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4249 * optimization: direct conversion of (unsigned-byte 32) to floats on
4250 the PowerPC platform.
4251 * optimization: structure instances with raw slots now use less
4252 memory, and probably show better memory locality. (thanks to
4254 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4255 are treated as requests for stack allocation on the x86-64,
4256 Alpha-32, PPC and SPARC platforms.
4257 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4258 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4259 (thanks to Tony Martinez)
4261 ** gcing a dead thread can no longer lead to lockups
4262 ** threads block signals until they are set up properly
4263 ** errno is no longer shared by threads
4264 ** interrupt-thread restores the eflags register on x86
4265 ** fixed some lockups due to gc/thread interaction
4266 * fixed some bugs revealed by Paul Dietz' test suite:
4267 ** invalid dotted lists no longer raise a read error when
4268 *READ-SUPPRESS* is T
4269 ** signal an error if a symbol that names a declaration is used
4270 as the name of a type, or vice versa
4271 ** allow using the (declare (typespec var*)) abbreviation for
4272 (declare (type typespec var*)) with all type specifiers
4273 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4274 ** always return NIL from PPRINT-POP when OBJECT is NIL
4275 ** don't signal errors when pretty-printing malformed LABELS,
4276 FLET or MACROLET forms
4277 ** declarations in a DOLIST body are also in scope for the
4279 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4281 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4284 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4285 * fixed cross-compiler leakages that prevented building a 32-bit
4286 target with a 64-bit host compiler.
4287 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4288 opened with :IF-EXISTS :OVERWRITE.
4289 * fixed bug 281: error for an invalid qualifier in a short-form method
4290 combination method is not signalled until the faulty method is called.
4291 * bug fix: iteration variable type inferrer failed to deal with open
4292 intervals. (reported by Alan Shields)
4293 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4294 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4295 or more runtime options were provided to the sbcl binary.
4296 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4297 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4298 * optimization: there's now a fast-path for fixnum arguments in the
4299 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4300 * optimization: the code generated on x86-64 is more compact thanks
4301 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4302 * bug fix: floating-point exception handling now partly works on
4303 x86-64. (Thanks to James Knight)
4304 * improvement to the MIPS backend from Thiemo Seufer: C-style
4305 64-bit long long arguments and return values to alien functions
4307 * fixed some bugs revealed by Paul Dietz' test suite:
4308 ** the type-error signalled from WARN has a filled-in DATUM slot.
4309 ** the type-error required when a stream is not associated with
4310 a file has the stream as its datum.
4311 ** type-errors on single-floats on x86-64 no longer have
4312 :INVALID-OBJECT as the datum
4313 ** the type-errors signalled for invalid function names now have
4314 a correct expected type
4315 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4316 for structures defined with a :TYPE. Documentation strings for
4317 typed structures are no longer immediately discarded
4318 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4319 broadcast streams and synonym streams. FILE-LENGTH now also works
4320 on broadcast streams.
4322 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4323 * incompatible change: the --noprogrammer option, deprecated since
4324 version 0.7.5, has been removed. Please use the equivalent
4325 --disable-debugger option instead.
4326 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4328 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4329 inoperational for a while now) has been completely removed.
4330 * null lexical environments are now printed as #<NULL-LEXENV>,
4331 significantly reducing the amount of clutter in typical backtraces.
4332 * documentation on weak pointers, finalization, and after GC hooks
4333 has been added to the manual.
4334 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4335 as other specialized array types, is much faster. SUBSEQ and
4336 COPY-SEQ on such arrays have also been sped up.
4337 * optimization: EQL is now more efficient when at least other argument
4338 is known to be of type (OR FIXNUM (NOT NUMBER)).
4339 * fixed bug: the runtime is now less vulnerable to changes in the
4340 size of the SBCL object on OS X, and virtual memory is reserved for
4341 all spaces that need to be at a fixed address.
4342 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4343 * fixed bug: finalizers and after GC hooks that cause consing are now
4345 * fixed bug: compiler error messages and summaries are now printed to
4346 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4347 * fixed inference of the upper bound of an iteration variable.
4348 (reported by Rajat Datta).
4349 * fixed bug 211e: calling local functions with duplicated constant
4350 keyword argument no longer causes a bogus style warning about an
4352 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4353 ftype declaration to be disregarded. (reported by Dave Roberts)
4354 * fixed bug 373: caused by erronous compilation of references to alien
4355 variables in the runtime on ppc/darwin.
4356 * fixed bug 376: CONJUGATE type deriver.
4357 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4358 (reported by Baughn on #lisp)
4359 * a cross-compiler bug on non-x86 platforms has been identified and
4360 fixed. (thanks to Bruno Haible)
4361 * improvements to the MIPS runtime code for increased stability.
4362 (thanks to Thiemo Seufer)
4363 * increased the maximimum compact environment size to allow
4364 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4365 * partial workaround for bug 135: don't name the function we're
4366 calling for hairy cases of EVAL, so as not to accumulate one environment
4367 entry per call to EVAL. (reported by Kevin Reid)
4368 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4369 * optimization: type testing for non-vector arrays should be faster.
4370 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4372 * bug fix: setting 31st element of a bit vector to zero did not work
4374 * bug fix: redefining a class definition which failed due to a
4375 previous accessor / function clash now works (but see BUGS entry
4376 #380 for more problems in this area). (thanks to Zach Beane)
4377 * the long form of DEFINE-METHOD-COMBINATION disables method group
4378 checking when given a single method group with pattern *. (thanks
4380 * on x86 compiler supports stack allocation of results of simple
4381 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4382 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4383 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4384 * fixed some bugs related to Unicode integration:
4385 ** the restarts for recovering from input and output encoding
4386 errors only appear when there is in fact such an error to
4388 * fixed some bugs revealed by Paul Dietz' test suite:
4389 ** MISC.549 and similar: late transformation of unsafe type
4390 assertions into derived types caused unexpected code
4392 ** SCALE-FLOAT type deriver is less wrong.
4393 ** type derivers for EXP, LOG and similar functions compute result
4394 types for complex arguments better.
4395 ** (MISC.563) CONJUGATE type deriver works for very restricted
4397 ** out-of-line type testers for character strings are available.
4398 ** EQUAL compiler transform understands specialness of objects
4400 ** accessing double-floats stored on the stack now works on x86-64.
4401 ** debugger internals could sometimes create invalid lispobjs,
4402 resulting in GC crashes.
4403 ** MISC.548: type check weakening can convert required type into
4405 ** initialization forms for bindings are not in scope of free special
4408 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4409 * incompatible change: thread support for non-NPTL systems has
4410 been removed - locking is buggy and unreliable. A threaded
4411 SBCL build will now warn at startup and refuse to create
4412 new threads, unless futex support is detected in the kernel
4413 * incompatible change: the top level REPL now has only an ABORT
4414 restart associated with it, not TOPLEVEL and ABORT as it used to.
4415 TOP and TOPLEVEL are now available as debugger commands for
4416 returning to the top level.
4417 * incompatible change: forms evaluated in the REPL now use the
4418 global optimization policy.
4419 * incompatible change: user- and system-initialization files are
4420 no longer processed with LOAD, but by READ and EVAL; hence the
4421 global optimization policy, startup package, readtable, etc,
4423 * The .fasl file format number has been incremented because of
4424 various incompatible changes.
4425 * internal entry point details and argument counts no longer appear
4426 in backtraces unless explicitly requested by setting
4427 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4428 * built-in and standard functions no longer have names like "top
4429 level local call to FOO".
4430 * fixed bug 32: functions defined in non-null lexical environments
4431 now have more legible printed representation
4432 * fixed bug 33: functions defined in non-null lexical environemnts
4433 are now more amenable to inspection by INSPECT.
4434 * workaround for bug 354: XEPs no longer appear in backtraces unless
4435 explicitly requested.
4436 * fixed bug: receiving the signal which results from attempting to
4437 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4438 SIGBUS on other *BSDs) on architectures where the C stack is also
4439 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4440 to debugger confusion or wild instability. (reported by Cheuksan
4442 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4443 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4444 (reported by Lutz Euler)
4445 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4446 compiled code. (reported by Paul Dietz)
4447 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4448 specialized parameter to a method to something that is not TYPEP
4449 the specializer is now possible.
4450 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4451 face of package deletion.
4452 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4453 pathname. (reported by David Tolpin on c.l.l)
4454 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4455 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4456 STRING-STREAM and FILE-STREAM, respectively.
4457 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4458 than previously; in addition, its test suite is now run on build.
4459 (thanks to Luke Gorrie)
4460 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4461 * optimization: added a immediate representation for single-floats
4463 * fixed some bugs revealed by Paul Dietz' test suite:
4464 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4465 ** attempting to create a package with a colliding nickname causes
4466 correctable errors to be signalled.
4467 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4468 ** several x86-64 backend bugs related to sign-extension of immediate
4471 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4472 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4473 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4475 * fixed loading of multiply forward-referenced layouts.
4476 (thanks to Cheuksan Wang)
4477 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4478 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4479 (see COMPILE-FILE documentation for details of :PRINT option)
4480 * fixed bugs 19 and 317: fixed-format floating point printing is
4481 more accurate. This also fixes a bug reported by Adam Warner
4482 related to the ~@F format directive.
4483 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4485 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4486 dispatch table if the from-char is a dispatch macro character.
4487 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4488 by the wordsize no longer ignore the last word. (reported by Lutz
4490 * fixed bug in type checking of dynamic-extent variables. (reported
4492 * optimization: sequence traversal functions use their freedom to
4493 coerce function designators to functions.
4494 * optimization: code with many calls to CLOS methods specialized on
4495 CLOS classes has had redundant type checks removed.
4496 * optimization: added declarations to speed up operations that access
4497 the internal character database (for example STRING-UPCASE)
4498 * optimization: comparison operations between floats and sufficiently small
4499 fixnums no longer create extra rationals
4500 * fixed some bugs related to Unicode integration:
4501 ** portions of multibyte characters at the end of buffers for
4502 character-based file input are correctly transferred to the
4503 start of the buffer at the next read.
4504 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4505 passing it through to OPEN.
4506 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4507 argument given to internal calls to OPEN.
4508 ** the built-in comment readers (introduced by character sequences
4509 ";" and "#|") are more forgiving to encoding errors; they will
4510 STYLE-WARN and then attempt to resync the stream at a character
4511 boundary. (thanks to Teemu Kalvas)
4512 * fixed some bugs in the x86-64 port:
4513 ** Negative short int return values from c-calls are sign-extended
4515 ** The stack is aligned to 16-bytes for c-calls, as required by
4516 the ABI. (thanks to Cheuksan Wang)
4517 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4518 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4519 for enums. (thanks to Vincent Arkesteijn)
4520 ** Multiple small optimizations and bugfixes for floating point
4522 * fixed some bugs revealed by Paul Dietz' test suite:
4523 ** Space, Tab, Linefeed, Return and Page have the invalid
4524 secondary constituent character trait.
4525 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4527 ** WITH-INPUT-FROM-STRING should only update the index place on
4529 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4530 works more reliably.
4531 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4532 with one-dimensional arrays with fill pointers.
4533 ** TYPE-OF failed on a complex with an integer realpart and a
4535 ** compiler failure during type inference for the code of form
4536 (IF (EQL X (THE ...)) ...) (MISC.535).
4538 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4539 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4540 platform. The port supports 61-bit fixnums, large memory spaces
4541 and reloading shared object files.
4542 * enhancement: saving cores with foreign code loaded is now
4543 supported on ppc/Darwin in addition to the previously supported
4545 * enhancement: the statistical profiler now walks deeper into the
4546 call stack for more meaningful call-graphs and accrued time
4547 reports (x86/x86-64 only). It also now reports time spent in
4549 * enhancement: it is now possible to trace most individual methods
4550 of a generic function in addition to tracing the generic function
4552 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4554 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4555 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4556 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4557 produces an error. (thanks to Vincent Arkesteijn)
4558 * bug fix: NAMESTRING on pathnames with :WILD components in their
4559 directories works correctly. (thanks to Artem V. Andreev)
4560 * fixed bug 125: compiler preserves identity of closures. (reported
4562 * bug fixed: functions with &REST arguments sometimes failed with
4563 "Undefined function" when compiled with (DEBUG 3). (reported by
4565 * bug fix: overflow during compiling of setting element of a bit
4566 vector with constant index and value. (reported by Timmy Douglas)
4567 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4568 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4569 * on x86 compiler partially supports stack allocation of dynamic-extent
4571 * GO and RETURN-FROM do not check the extent of their exit points
4572 when compiled with SAFETY 0.
4573 * fixed some bugs related to Unicode integration:
4574 ** encoding and decoding errors are now much more robustly
4575 handled; it should now be possible to recover even from invalid
4576 input or output to the terminal. (thanks to Teemu Kalvas)
4577 ** provided a first cut at implementing STRING-TO-OCTETS and
4578 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4579 ** altered the SB-MD5 contributed module slightly, changing the
4580 interface just enough for it to be supportable for builds where
4581 lisp characters are not eight bits.
4582 * fixed some bugs revealed by Paul Dietz' test suite:
4583 ** the FORMATTER-generated functions for ~V[ conditionals require
4584 the correct number of arguments.
4585 ** READ-FROM-STRING returns the mandated second value when applied
4586 to displaced strings.
4587 ** the #\Rubout and #\Backspace characters are treated as invalid
4588 constituent characters by the tokenizer.
4590 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4591 * new feature: reloading changed shared object files with
4592 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4593 * new feature: references to foreign variables and functions
4594 can now be compiled and loaded before the corresponding shared
4595 object file is loaded, as long as the foreign definitions are
4596 available at runtime.
4597 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4598 supported. (thanks to Dan Debertin)
4599 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4600 just keywords. (thanks to Vincent Arkesteijn)
4601 * fixed bug #331: structure-class instances corresponding to
4602 DEFSTRUCT forms are now created eagerly.
4603 * fixed bug #345: backtraces from calls to undefined functions work
4604 on x86 as well. Related bug #61 is now also partially fixed on x86
4605 (backtraces from throws to unknown catch tags.)
4606 * bug fix: lambda-list parsing is now stricter vrt. order and number
4607 of lambda-list keywords.
4608 * bug fix: as specified by AMOP, an error is signalled if a
4609 class-option appears multiple times in a DEFCLASS form. (reported
4611 * bug fix: RANDOM can be compiled when the compiler derives the type
4612 of its numeric argument as a disjoint set of small integers.
4613 (reported by Paul Dietz)
4614 * bug fix: starting a core saved with shared objects loaded when
4615 those objects are not available no longer causes threaded SBCL to
4616 hang. (reported by Sean Ross)
4617 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4619 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4620 argument, which must always be NIL. (reported by Kalle Niemitalo)
4621 * bug fix: printing 1.0d+23 no longer results in an error.
4622 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4623 * bug fix: structure slot setters preserve evaluation order. (thanks
4625 * fixed some bugs related to Unicode integration:
4626 ** RUN-PROGRAM can allow its child to take input from a Lisp
4627 stream. (reported by Stefan Scholl)
4628 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4629 locales. (reported by Ken Causey)
4630 * fixed some bugs revealed by Paul Dietz' test suite:
4631 ** INCF, DECF and REMF evaluate their place form as specified in
4633 ** FORMATTER expands ~{ ~} iteration directives with V or #
4634 parameters correctly.
4635 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4636 consequent uses no arguments correctly.
4637 ** the system has a partial understanding of the (COMPLEX RATIO)
4639 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4642 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4643 * new feature: a build-time option (controlled by the :SB-UNICODE
4644 keyword feature, enabled by default) for building the system with
4645 support for the entire 21-bit character space defined by the
4647 * new feature: the system now has rudimentary external-format
4648 support; the primary user-visible change at this time is that
4649 characters with the high bit set (such as lower-case-e-acute) will
4650 print correctly to a terminal in a UTF-8 environment.
4651 * minor incompatible change: BASE-CHAR no longer names a class;
4652 however, CHARACTER continues to do so, as required by ANSI.
4653 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4654 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4655 has been moved to the SB-EXT package (temporarily re-exported from
4657 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4658 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4660 * fixed bug #351: better error-handlind and reporting for malformed
4662 * fixed bug #350: bignum-printing is now more memory-efficient,
4663 allowing printing of very large bignums, eg. (expt 2 10000000).
4664 (reported by Bruno Haible)
4665 * fixed bug #302: better primitive-type selection for intersection
4667 * fixed bug #308: non-graphic characters now all have names, as
4668 required. (reported by Bruno Haible)
4669 * bug fix: redefining a class with different superclasses now correctly
4670 removes it from the direct-subclasses of its previous superclasses.
4671 (reported by David Morse)
4672 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4673 new value now works. (reported by Bruno Haible)
4674 * bug fix: correct canonicalization of multiple non-standard slot
4675 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4676 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4677 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4678 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4679 now exists, an signals an error.
4680 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4681 during macroexpansion for non-iteration variables as well. (reported
4682 by Bruno Haible for CMUCL)
4683 * bug fix: Cyclic structures and unprintable objects in compiler
4684 messages no longer cause errors. (reported by Bruno Haible)
4685 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4686 and READ-FROM-STRING all now return a primary value of NIL if
4687 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4688 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4689 (reported by Bruno Haible for CMUCL)
4690 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4691 do not designate a condition. (reported by Bruno Haible for
4693 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4694 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4695 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4696 permitting resolution in favour of any of the conflicting symbols.
4697 (reported by Bruno Haible for CMUCL)
4698 * bug fix: EQUAL compiler optimizations is less aggressive on
4699 strings which can potentially compare true despite having distinct
4700 specialized array element types.
4701 * bug fix: unit enumerations can be defined without dividing by
4702 zero. (thanks to Vincent Arkesteijn)
4703 * FORMAT compile-time argument count checking has been enhanced.
4704 (report from Bruno Haible for CMUCL)
4705 * a partial workaround for the bug 262: the compiler does not try to
4706 inline-expand a local function doing RETURN-FROM from a deleted
4707 BLOCK. (thanks to Peter Denno for the bug report and to David
4708 Wragg for the simple test case)
4709 * fixed some bugs revealed by Paul Dietz' test suite:
4710 ** RENAME-PACKAGE allows all package designators as new package
4712 ** constraint propagation and lambda variable substitution are
4713 more cautious in dealing with partially deleted code.
4714 ** compiler sometimes lost reoptimization passes.
4715 ** CERROR, given a condition as condition designator, passes its
4716 remaining arguments to the continue format control without
4718 ** Case-altering FORMAT directives work correctly on non-ASCII
4720 ** The REAL type specifier handles bounds outside the floating
4721 point ranges without signalling FLOATING-POINT-OVERFLOW.
4722 ** Functions with IR1-transformations can create intercomponent
4723 references to global functions.
4724 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4726 ** FORMAT ~R treats a nil value for its first parameter correctly.
4728 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4729 * enhancement: saving cores with foreign code loaded is now
4730 supported on x86/NetBSD and sparc/Linux in addition to the previously
4731 supported platforms.
4732 * bug fix: on some platforms repeated installations caused multiple
4733 copies of HTML documentation to be installed -- should not happen
4734 any more. (reported by Stefan Scholl)
4735 * bug fix: parsing self-recursive alien record types multiple times
4736 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4737 original patch by Helmut Eller for CMUCL)
4738 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4739 (thanks to Richard Kreuter)
4740 * bug fix: defining classes whose accessors are methods on existing
4741 generic functions in other (locked) packages no longer signals
4742 bogus package lock violations. (reported by François-René Rideau)
4743 * bug fix: special variables as DEFMETHOD parameters no longer have
4744 associated bogus type declarations. (reported by David Wragg and
4746 * bug fix: read-write consistency on streams of element-type
4747 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4748 * bug fix: redefiniton of the only method of a generic function with
4749 no DEFGENERIC no longer emits a full WARNING. In addition,
4750 redefinition of generic functions with no DEFGENERIC to an
4751 incompatible lambda list now signals an error. (thanks to Zach
4753 * bug fix: DEFGENERIC now works even when there's a function of the
4754 same name in an enclosing lexical environment. (thanks to Zach
4756 * fixed compiler failure, caused by instrumenting code during
4757 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4758 * optimization: added loop analysis and improved register allocation
4759 * fixed some bugs revealed by Paul Dietz' test suite:
4760 ** POSITION on displaced vectors with non-zero displacement
4761 returns the right answer.
4762 ** (SIMPLE-STRING) is a valid type specifier for sequence
4764 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4766 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4767 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4769 ** The justification version of the FORMAT ~< directive treats
4770 non-zero minpad parameter correctly.
4772 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4773 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4774 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4775 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4776 the supported interface.
4777 * new feature: Single-stepping of code compiled with DEBUG 2 or
4778 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4779 * new feature: saving cores with foreign code loaded is now
4780 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4781 Timothy Moore's work for CMUCL)
4782 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4783 parameters to * instead of NIL if no initform is supplied.
4784 (reported by Johan Bockgaard)
4785 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4786 correctly when FUNCALL appears as the car of the form. Note:
4787 despite this FUNCALL forms are not currently subject to
4788 compiler-macro expansion. (port of Raymond Toy's fix for the
4789 same from CMUCL, reported by Johan Bockgaard)
4790 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4791 (thanks for Teemu Kalvas)
4792 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4793 case instead of terminating the iteration (thanks for Julian
4794 Squires, Sean Champ and Raymond Toy)
4795 * bug fix: incorrect expansion of defgeneric that caused a style
4796 warning. (thanks for Zach Beane)
4797 * bug fix: slot accessor effective method computation works properly
4798 for classes with multiple non-standard applicable methods on
4799 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4800 * on x86 compiler supports stack allocation of results of LIST and
4801 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4802 CMUCL implementation by Gerd Moellmann)
4803 * fixed some bugs revealed by Paul Dietz' test suite:
4804 ** FORMAT strings with both the ~<~:;~> form of the justification
4805 directive and pretty-printing directives cause an error.
4807 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4808 * incompatible change: the internal functions
4809 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4810 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4811 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4812 instead of the old functions.
4813 * new feature: on platforms where "dladdr" is available foreign
4814 function names now appear in backtraces. (based on Helmut Eller's
4816 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4817 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4819 * documentation: ASDF manual is now distributed with SBCL.
4820 * bug fix: SBCL can now load its contributed modules with REQUIRE
4821 even if the system-provided entries have been removed from
4822 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4824 * bug fix: backtraces involving undefined functions or assembly
4825 routines are more informative. (thanks to Brian Downing)
4826 * bug fix: mutually referent alien structures now work correctly.
4827 (reported by Rick Taube)
4828 * bug fix: structures defined by WITH-ALIEN can be referred to
4829 within other definitions in the same WITH-ALIEN.
4830 * bug fix: division operators (MOD, TRUNCATE and the like) with
4831 constant zero divisors and integer dividends no longer generate
4833 * bug fix: provide default methods for INPUT-STREAM-P and
4834 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4835 * bug fix: improve the detection and resolution of MOP metacycles
4836 (where effective method computation depends on the generic function
4837 having its effective method computed). (reported by Bruno Haible)
4838 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4839 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4840 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4841 * bug fix: pathnames with relative directory components can be
4842 represented relative to default pathnames.
4843 * optimization: in taking the GCD of bignums, reduce the two bignums
4844 to approximately the same size (using Euclid's algorithm) before
4845 applying the more sophisticated binary GCD. (thanks to Juho
4847 * optimization: COUNT on bitvectors now operates word-at-a-time.
4848 * optimization: ASH with a positive, but not necessarily constant,
4849 (leftwards) shift, when in a modular context, is compiled to a
4851 * fixed some bugs revealed by Paul Dietz' test suite:
4852 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4853 if the corresponding argument is NIL.
4854 ** FORMAT directives accepting a minpad parameter treat negative
4856 ** literal commas as character parameters to FORMAT directives are
4858 ** literal spaces directly after ~<Newline> directives within a
4859 format-logical-block (~:< ~@:>) do not induce :FILL-style
4860 conditional newlines.
4861 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4862 as specified: it no longer includes conditional newlines).
4863 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4865 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4866 :PER-LINE-PREFIX argument does not evaluate to a string.
4868 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4869 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4870 the manual for details; for now, package locks can be disabled by
4871 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4872 if no major problems are found then it is likely that they will be
4873 compiled in unconditionally.
4874 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4875 unsupported operators on all platforms. To load a shared library
4876 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4877 object file, link it into a shared library outside of SBCL and
4878 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4880 * bug workaround: ROOM T and the GC were not working together
4881 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4882 reporting facility aren't preserved. That reporting has been
4883 disabled, so now until and unless someone figures out how to make it
4884 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4885 * minor incompatible change: as threatened around sbcl-0.8.0, the
4886 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4887 The symbols are also exported from SB-PCL for backwards
4888 compatibility, but more so than before SB-PCL should be treated as
4889 an implementation-internal package.
4890 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4892 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4893 It is known as of this release not to work on the Alpha, however.
4894 * fixed bug #167: errors signalled due to illegal syntax in method
4895 bodies are now more legible.
4896 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4897 designators and can hence be used with TYPEP.
4898 * fixed bug #333: CHECK-TYPE now ensures that the type error
4899 signalled, if any, has the right object to be accessed by
4900 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4901 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4902 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4904 * fixed bug #334: programmatic addition of slots using specialized
4905 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4906 and :ALLOCATION :CLASS slots.
4907 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4908 float exponents. (rereported by Peter Seibel)
4909 * fixed a bug: #\Space (and other whitespace characters) are no
4910 longer considered to be macro characters in standard syntax by
4911 GET-MACRO-CHARACTER.
4912 * fixed bug: initialization of condition class metaobjects no longer
4913 causes an instance of the condition to be created. (reported by
4915 * fixed bug: it is now possible to have slots such that
4916 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4917 description is neither :INSTANCE nor :CLASS.
4918 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4919 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4920 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4921 non-standard SLOT-DEFINITION-ALLOCATION values.
4922 * fixed bugs: various race conditions handling exiting threads.
4923 CL-PPCRE's thread torture test now passes.
4924 * fixed arguably-a-bug: GC time proportional to number of threads in
4925 system even when most of them are idle
4926 * optimization: improved performance of BIT and SBIT on bit-vectors.
4927 * .fasl file incompatibility: The fasl file version number has
4928 been incremented because of changes associated with package locks.
4930 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4931 * minor incompatible change: the system no longer provides
4932 optimization hints (conditions which are TYPEP
4933 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4934 mode; these hints are still emitted when higher SPEED optimization
4936 * new contrib module: a sampling profiler (profiling by statistical
4937 sampling, rather than by instrumenting functions) is available as
4938 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4939 * the behaviour of the standard function ED is now customizeable by
4940 third parties through a hook variable: see ED's documentation
4941 string for information on the protocol.
4942 * the compiler no longer emits efficiency notes for (FUNCALL X)
4943 when the type of X is uncertain under default optimization
4945 * fixed bug 276: mutating a binding of a specialized parameter to a
4946 method to something that is not TYPEP the specializer is now
4948 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4949 exhibit the required behaviour on the x86 platform. (thanks to
4950 Peter van Eynde, Eric Marsden and Bruno Haible)
4951 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4952 even for difficult arguments. (reported by Peter Graves)
4953 * fixed bug 141a: the backquote printer now descends quoted
4955 * fixed another bug in backquote printing: no more destructive
4956 modification of the form's list structure. (reported by Brian
4958 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4959 move between its address being taken and the call to
4960 interrupt_thread, fixing a crashing race condition.
4961 * the SB-POSIX contrib implementation has been adjusted so that it
4962 no longer exhibits ridiculously poor performance when constructing
4963 instances corresponding to C structs.
4965 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4966 * minor incompatible change: the sb-grovel contrib now treats C
4967 structures as alien (in the sense of SB-ALIEN) objects rather than
4968 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4969 has implications for memory management of client code
4970 (sb-grovel-returned objects must now be manually managed) and for
4971 type safety (alien objects now have full types).
4972 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4973 used to control emission of compiler diagnostics, rather than the
4974 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4975 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4976 quality should be considered deprecated.
4977 * install.sh now installs the user manual as well
4978 * (not quite a new documentable feature, but worth considering in
4979 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4980 beginnings of a semantically meaningful condition hierarchy is
4981 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4983 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4984 designator as the defaults argument.
4985 * fixed bug: Displaced arrays whose displaced-to array has become
4986 too small now cause ARRAY-DIMENSION to signal an error, providing
4987 for safer bounds-checking. (reported by Bruno Haible)
4988 * fixed bug: DEFCLASS slot definitions with identical :READER and
4989 :WRITER names now signal a reasonable error. (reported by Thomas
4991 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4993 * fixed bug: Invalid slot specification errors now print correctly.
4994 (thanks to Zach Beane)
4995 * fixed bug 320: Shared to local slot value transfers in class
4996 redefinitions now happen corrently from superclasses as
4997 well. (reported by Bruno Haible)
4998 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5000 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5001 improper lists correctly. (reported by Bruno Haible)
5002 * fixed bug 313: source-transform for <fun-name> was erroneously
5003 applied to a call of a value of a variable with name <fun-name>.
5004 (reported by Antonio Menezes Leitao)
5005 * fixed bug 307: The obsolete instance protocol ensures that
5006 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5007 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5008 remove dead unknown-values globs from the middle of the stack.
5009 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5010 easier to resume long computations after using *BREAK-ON-SIGNALS*
5011 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5012 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5013 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5014 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5015 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5016 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5018 * fixed a (fairly theoretical) bug in string printing: if
5019 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5020 does not have array-element-type equal to the most general string
5022 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5023 function name. (thanks to Nikodemus Siivola)
5024 * fixed bug: compile-time format string checker failed on
5025 non-closed ~{. (reported by Thomas F Burdick)
5026 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5027 don't warn on legal loop code involving more than one aggregate
5028 boolean. (thanks to Nikodemus Siivola)
5029 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5030 in keyword position to MAKE-PACKAGE was not being reported as
5032 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5033 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5035 * fixed bugs 280 and 312: the checking for multiple definitions in a
5036 file is less likely to become confused by uses of inline
5038 * fixed bug: the #S reader macro performs the keyword coercion
5039 specified for slot names. (reported by Kalle Niemitalo)
5040 * fixed bug: lambda lists may contain symbols whose names start with
5041 & but are not lambda-list-keywords; their occurrence triggers a
5043 * fixed bug 321: define-method-combination argument lambda lists do
5044 not cause invalid code to be generated when &optional or &aux
5045 variables have default values. (reported by Bruno Haible)
5046 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5047 have CLOS classes; this appears also to have fixed reported
5048 instability in stack exhaustion detection.
5049 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5050 MUFFLE-WARNING when no associated restart is present is now
5052 * optimization: rearranged the expansion of various defining macros
5053 so that each expands into only one top-level form in a
5054 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5056 * optimization: used a previously little-used slot in symbols to
5057 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5059 * fixed some bugs revealed by Paul Dietz' test suite:
5060 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5062 ** Fixed an optimization bug related to inheritance of initforms
5063 from local to shared slots.
5064 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5065 ** CAST optimizer forgot to flush argument derived type.
5066 ** print/read consistency on floats is now orders of magnitude
5067 more likely. (thanks also to Bruno Haible for a similar report
5069 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5070 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5071 for objects of type REAL. Make it so.
5072 ** SXHASH is specified (infelicitously) to respect similarity,
5073 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5074 it so. (thanks to Markus Ziegler)
5075 ** on the Alpha, the compiler succeeds in compiling functions
5076 returning a known number of arguments greater than 63.
5077 ** fixed handling of invalid NIL arguments in keyword position
5079 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5081 ** provided a readably-printable representation for RANDOM-STATE
5083 ** ensured that pathnames, where they have a namestring, always
5084 print using #P"..." syntax.
5086 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5087 * Support for the forthcoming 2.0 version of the NetBSD kernel
5088 running on x86 hardware has been added. (thanks to Perry
5089 E. Metzger most immediately, and others for their past work)
5090 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5091 current release version; SBCL's OpenBSD support had been broken
5092 since about the time of OpenBSD's switch to ELF binary format.)
5093 * [placeholder for DX summary]
5094 ** user code with &REST lists declared dynamic-extent, under high
5095 speed or space and low safety and debug optimization policy.
5096 * The manual has been converted to Texinfo format and the debugger
5097 chapter from the cmucl manual has been added.
5098 * A facility has been added to extract documentation strings from
5099 sbcl and store them as Texinfo-formatted snippets for inclusion in
5100 the manual (via Texinfo's @include directive)
5101 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5102 the test case to Dave Roberts)
5103 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5104 pointers. (reported by Sean Ross)
5105 * bug fix: PROFILE output is printed nicely even for large numerical
5106 values. (thanks to Zach Beane)
5107 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5108 greater than 32 handle EOF correctly.
5109 * bug fix: on X86 an immediate argument of the IMUL instruction is
5110 correctly printed in disassembly. (thanks to Lutz Euler)
5111 * bug fix: class slots in redefined classes preserve their old
5112 values. (thanks to Bruno Haible and Nikodemus Siivola)
5113 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5114 succeeds. (reported by Marco Baringer)
5115 * fixed some bugs revealed by Paul Dietz' test suite:
5116 ** READ-SEQUENCE now works on ECHO-STREAMs.
5117 ** RATIONALIZE works more according to its specification. (thanks
5120 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5121 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5122 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5123 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5124 should matter to you only if you rebind the printer control
5125 variables and then find you want different bindings in the
5126 debugger than in the ordinary execution of your program.)
5127 * The runtime build system has been tweaked to support building
5128 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5129 assembler and linker. (thanks to Nikodemus Siivola)
5130 * Unbound, undefined, undeclared variables now trigger full
5131 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5132 more often programmer error than deliberate exploitation of undefined
5134 * optimization: the hash algorithm for strings has changed to one
5135 that is less vulnerable to spurious collisions. (thanks to Juho
5137 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5138 needless bounds checking. (thanks to Juho Snellman)
5139 * optimization: implemented multiplication as a modular
5140 (UNSIGNED-BYTE 32) operation on the PPC backend.
5141 * fixed some bugs revealed by Paul Dietz' test suite:
5142 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5144 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5145 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5146 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5148 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5150 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5152 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5153 their output stream on EOF from read.
5154 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5155 have been read to end-of-file.
5156 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5158 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5159 description of determination of which consecutive characters
5161 ** Printing the "Space" character with escaping on now yields "#\\ ",
5162 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5163 ** Reading floating-point numbers with *READ-BASE* set to a number
5164 less than 10 works correctly.
5165 ** Reading floating-point numbers with *READ-BASE* set to a number
5166 more than 10 works correctly.
5167 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5168 the readtable currently in effect.
5170 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5171 * minor incompatible change: parsing of namestrings on a physical
5172 (Unix) host has changed; numbers after the final #\. in a
5173 namestring are no longer interpreted as a version field. This is
5174 intented to be largely invisible to the user, except that the
5175 meaning of the namestring "*.*.*" has changed: it now refers to a
5176 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5177 should usually be replaced by
5178 (make-pathname :name :wild :type :wild :version :wild)
5179 with the added benefit that this is more likely to be portable.
5180 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5181 option to OPEN now signals an error if the file being opened
5182 exists; this may have an impact on existing code.
5183 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5184 signals received, on the PowerPC platforms (both Linux and
5185 Darwin). (thanks to Pierre Mai for pointing out the location of
5187 * several fixes on OS X: The system now builds and runs cleanly on
5188 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5189 (thanks to Brian Mastenbrook)
5190 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5191 second-resolution: integer multiples of 1/3600 between -24 and 24.
5192 (thanks to Vincent Arkesteijn)
5193 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5194 type when called with 1 argument; PEEK-CHAR checked type of
5195 PEEK-TYPE only after having read first character from a
5196 stream. (reported by Peter Graves)
5197 * bug fix: the garbage collector now has much better locality
5198 behaviour, and in particular no longer treats all memory as being
5199 exhausted when many small objects point to each other in a deeply
5201 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5202 recognized as being TYPEP their class.
5203 * bug fix: the PUSHNEW documentation string has been corrected.
5204 (thanks to Vincent Arkesteijn)
5205 * bug fix: defaulting of the value for the last of an atypically
5206 large number of multiple values being bound was not being
5207 performed correctly on the Alpha or PPC platforms
5208 * optimization: implemented multiplication as a modular
5209 (UNSIGNED-BYTE 32) operation on the x86 backend.
5210 * optimization: SEARCH on simple-base-strings can now be open-coded.
5211 (see also contrib/compiler-extras.lisp for inspiration for
5212 teaching the compiler about the Boyer-Moore algorithm).
5213 * value, returned by MAX (and MIN) called with several EQUALP, but
5214 not EQL, arguments now does not depend on compiler settings.
5215 * fixed some bugs revealed by Paul Dietz' test suite:
5216 ** in stack analysis liveness information is propagated from
5217 non-local entry points.
5218 ** pathwise CAST removing failed when the CAST node did not start
5220 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5221 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5223 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5224 host is already defined.
5225 ** RENAME-FILE works on streams instead of signalling an internal
5227 ** PEEK-CHAR uses the current readtable when determining whether
5228 or not a character is whitespace.
5229 ** MERGE-PATHNAMES handles the case when the pathname does not
5230 specify a name while the default-pathname specifies a version.
5231 ** Pathnames now stand a better chance of respecting print/read
5233 ** Attempting to use standardized file system operators with a
5234 pathname with invalid :DIRECTORY components signals a
5236 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5238 ** DIRECTORY on logical pathnames is more correct.
5239 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5240 signal a TYPE-ERROR if their argument is not a stream.
5241 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5242 designator argument does not designate a stream.
5243 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5244 examining the synonym.
5245 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5247 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5248 element-type larger than ([UN]SIGNED-BYTE 32).
5250 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5251 * When built with the :SB-FUTEX feature, threaded builds now take
5252 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5253 for faster/more reliable mutex and condition variable support.
5254 * Incompatible change (but one you probably shouldn't have been using
5255 anyway): the interface and code for arbitrating between multiple
5256 threads in the same user session has been redesigned.
5257 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5258 error when called without an explicit environment argument.
5259 (thanks to Nikodemus Siivola)
5260 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5261 confused about their position. (thanks to Adam Warner and Gerd
5263 * bug fix: Pretty printing backquoted forms with unquotations in the
5264 argument list position of various code constructs such as LAMBDA
5265 now works correctly. (reported by Paul Dietz)
5266 * bug fix: Pretty printing unquotations no longer loses all
5267 stream position information.
5268 * optimization: performance of string output streams is now less
5269 poor for multiple small sequence writes.
5270 * optimization: performance of CSUBTYPEP in the presence of complex
5271 expressions involving CONS and NOT many times has been improved.
5272 (reported by Paul Dietz)
5273 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5275 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5276 streams for the REPL, for the debugger, and so on. (thanks to
5278 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5279 * fixed some bugs revealed by Paul Dietz' test suite:
5280 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5281 is ignored if it is too small, rather than propagating through
5282 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5283 ** extremely complex negations of CONS types were not being
5284 sufficiently canonicalized, leading to inconsistencies in
5286 ** VALUES tranformer lost derived type.
5288 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5289 * fixed a bootstrapping bug: the build process no longer assumes
5290 that the various BOOLE-related constants have the same value in
5291 host and target lisps. (noted by Paul Dietz' test suite on an
5292 SBCL binary built from CLISP)
5293 * The system can now be dynamically linked on the MIPS platform,
5294 which enables dynamic loading of foreign code from Lisp. (thanks
5295 to Ralf Baechle for discussions on the MIPS ABI)
5296 * The system now records debugging information for its own source
5297 files in a filesystem-position-independent manner, relative to
5298 the "SYS" logical host.
5299 * fixed a compiler bug: MV-LET convertion did not check references
5300 to the "max args" entry point. (reported by Brian Downing)
5301 * tweaked disassembly notes to be less confident about proclaiming
5302 some instruction as an LRA. (thanks to Brian Downing)
5303 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5304 now each have their own history, command character, and other
5305 characteristics. (thanks to David Lichteblau)
5306 * fixed some bugs revealed by Paul Dietz' test suite:
5307 ** compiler failure in compiling LOGAND expressions including a
5309 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5310 shift greater than 32.
5311 ** FLUSH-DEST did not mark blocks for type check regeneration.
5312 ** HANDLER-CASE failed to accept declarations in handler clauses
5313 in some circumstances.
5315 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5316 * New code in contrib/sb-introspect (still probably not entirely
5317 stable yet) provides some support for smart Lisp development
5318 environments like SLIME.
5319 * The conditions signalled for errors occurring when loading .fasl
5320 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5321 in a way which should help ASDF recover gracefully.
5322 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5323 stuff has been cleaned up. If you code contrib/ stuff, this might
5324 affect you, and you can look at contrib/README, contrib/STANDARDS,
5325 and/or the 0.8.4.27 diff to check.
5326 * In full calls the compiler now does not generate checks for declared
5327 argument types for all arguments.
5328 * various threading fixes
5329 ** and some experimental patches which didn't make it into
5330 the main tree for this release, but which are shipped in
5331 contrib/experimental-thread.patch as a possible fix for some
5332 failures (deadlock, spinning...) in GC-intensive multithreaded
5334 * fixed PPC build problem (source code incompatibility of different
5335 library versions): added offsetof() hackery which attempts to divine
5336 where glibc maintainers put uc_mcontext today
5337 * fixed bug 282: compiler does not trust type assertions while passing
5338 arguments to a full call.
5339 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5340 &OPTIONAL VALUES type parameter.
5341 * fix bug 214: algorithm for noting rejected templates is now more
5342 similar to that of template seletion. (also reported by rydis on
5344 * fixed bug 141b: printing backquoted information readably and prettily
5345 inserts a space where necessary.
5346 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5347 (CHARACTER 10) are now reported as errors, rather than propagated
5348 as unknown types. (reported by piso on #lisp)
5349 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5350 with values NIL and :ERROR. (thanks to Milan Zamazal)
5351 * fixed bug 191c: CLOS now does proper keyword argument checking as
5352 described in CLHS 7.6.5 and 7.6.5.1.
5353 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5354 longer raise an error; further, using a list as a for-as-arithmetic
5355 counter now raises a meaningful error.
5356 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5357 now understood by sequence creation functions such as MAKE-SEQUENCE
5359 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5360 a STRING-INPUT-STREAM.
5361 * compiler enhancement: SIGNUM is now better able to derive the type
5363 * type declarations inside WITH-SLOTS are checked. (reported by
5365 * fixed some bugs revealed by Paul Dietz' test suite:
5366 ** incorrect optimization of TRUNCATE for a positive first
5367 argument and negative second.
5368 ** compiler failure in let-convertion during flushing dead code.
5369 ** compiler failure while deriving type of TRUNCATE on an
5370 interval, containing 0.
5371 ** ASH of a negative bignum by a negative bignum count now returns
5373 ** intersection of CONS types now canonicalizes properly, fixing
5374 inconsistencies in SUBTYPEP.
5376 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5377 * incompatible change: The --disable-debugger command line
5378 option now clobbers the debugger at a more fundamental
5379 level, by redefining #'INVOKE-DEBUGGER instead of by
5380 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5381 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5382 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5383 enter the debugger REPL and then suffer recursive errors
5384 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5385 while under the new system, BREAK in --disable-debugger mode
5386 terminates the system just as an unhandled error would.
5387 * fixed compiler performance when processing loops with a step >1;
5388 * bug fix: DOCUMENTATION now retrieves generic function
5389 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5390 support has been systematized, and now supports the methods
5391 specified by ANSI, along with a default method and a method for
5392 slot documentation. (reported by Nathan Froyd)
5393 * bug fix: effective methods associated with a generic function are
5394 no longer cached over a change of that generic function's method
5395 combination. (reported by Andreas Fuchs)
5396 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5397 names a non-existent directory. (thanks to Andreas Fuchs)
5398 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5399 the PPC platform, lead to stack corruption; this has been fixed.
5400 (reported by Rainer Joswig)
5401 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5402 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5403 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5404 arithmetic in general, is now much more reliable on the PPC
5406 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5407 platform now returns the right answer.
5408 * optimization: restored some effective method precomputation in
5409 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5410 precomputation is now tunable.
5411 * optimization: compiler-internal data structure use has been
5412 reviewed, and changes have been made that should improve the
5413 performance of the compiler by about 20%.
5414 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5415 simple-base-strings and simple-bit-vectors is improved.
5416 * optimization: the optimization of 32-bit logical and arithmetic
5417 functions introduced in version 0.8.3 on the x86 has been
5418 implemented on the mips, ppc and sparc platforms; an
5419 implementation of the same facility, but for 64-bit arithmetic,
5420 has been added for the alpha.
5421 * microoptimization: the compiler is better able to make use of the
5422 x86 LEA instruction for multiplication by constants.
5423 * bug fix: in some situations compiler did not report usage of
5424 generic arithmetic in (SPEED 3) policy.
5425 * bug 145b fix: compiler used wrong type specifier while converting
5426 MEMBER-types to numeric.
5427 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5429 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5430 index argument now works properly on the Alpha platform.
5431 * bug fix: floating point exception treatment on the Alpha platform
5433 * bug fix: FILE-POSITION works much better on string input and
5434 output streams. (thanks to Nikodemus Siivola)
5435 * bug fix: many threading/garbage collection symptoms sorted.
5436 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5437 might be pseudo-atomic.
5438 * internal change: Stopping for GC is now done with signals not
5439 ptrace. GC is now done in whichever thread wanted it, instead of
5441 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5443 * bug fix: result form in DO is not contained in the implicit
5445 * incompatible change: ICR structure is changed; the value part of
5446 CONTINUATION is now called LVAR; corresponding functions are
5447 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5448 * added type deriver for ISQRT (thanks to Robert E. Brown).
5449 * bug fix: better support for loading from the command line when an
5450 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5452 * fixed some bugs revealed by Paul Dietz' test suite:
5453 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5454 ** ROUND and FROUND now give the right answer when given very
5455 small float arguments.
5456 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5458 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5459 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5460 ** LCM should return a non-negative integer.
5461 ** PARSE-INTEGER returned the index of a terminator instead of the
5462 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5463 ** PARSE-INTEGER returned an incorrect index being applied to a
5465 ** LCM with two arguments of 0 returns 0 rather than signalling
5467 ** unsigned addition of a 32-bit constant with the high bit set no
5468 longer causes an internal compiler error on the x86.
5469 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5470 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5471 with negative last argument.
5472 ** byte specifiers with zero size and position no longer cause
5473 an error during type derivation.
5474 ** bignum multiplication on the Alpha platform now returns the
5476 * porting: The system now builds on SuSE AMD64, although it still
5477 generates a 32-bit binary.
5478 * .fasl file incompatibility: The fasl file version number has
5479 been incremented (because of the changes to internal compiler
5480 data structures referred to above).
5482 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5483 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5484 more accurately, on the Darwin kernel running on PowerPC hardware.
5485 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5486 * Compiler code deletion notes now signal a condition of type
5487 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5488 an associated MUFFLE-WARNING restart.
5489 * The compiler now performs limited argument count validation of
5490 constant format strings in FORMAT, and where appropriate in ERROR,
5491 CERROR and WARN. (thanks to Gerd Moellmann)
5492 * New ASDF-INSTALL contrib can be used for automatic download and
5493 installation of third-party Lisp code from CCLAN or other sites
5495 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5496 which forces another thread to execute a function supplied by the
5498 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5499 now accept and act upon their :ELEMENT-TYPE keyword argument.
5500 (reported by Martin Atzmueller, Edi Weitz)
5501 * bug fix: FILE-POSITION now accepts position designators up to
5502 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5503 is the greater. (thanks to Patrik Nordebo)
5504 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5505 Kalle Olavi Niemitalo)
5506 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5507 printable. (reported by Eric Marsden)
5508 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5509 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5510 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5511 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5512 (thanks to Stig Sandoe)
5513 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5514 UNREAD-CHAR now correctly includes the unread character in the
5515 target sequence. (thanks to Gerd Moellmann)
5516 * bug fix in threaded builds: the system can now be suspended and
5517 resumed by shell job control with minimal disruption.
5518 * bug fixes in times and timezones >2038AD
5519 * better handling of "where is GNU make?" problem in build scripts
5520 (thanks to Nikodemus Siivola)
5521 * new optimization: inside a named function any reference to a
5522 function with the same name is considered to be a self-reference;
5523 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5524 optimization quality.
5525 * new optimization on x86: logical functions and + now have
5526 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5527 used when the result is truncated to 32 bits.
5528 * VALUES declaration is partially enabled.
5529 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5530 * fixed some bugs revealed by Paul Dietz' test suite:
5531 ** The system now obeys the constraint imposed by
5532 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5533 types form a lattice under type intersection.
5534 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5535 ** ASSOC now ignores NIL elements in an alist.
5536 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5537 and (1+ MOST-POSITIVE-FIXNUM) answers.
5538 ** The addition of a method with invalid qualifiers to a generic
5539 function does not cause an error to be signalled immediately;
5540 a warning is signalled, and the error is generated only on
5541 calling the generic function.
5542 * changed .fasl file version number, in part to add type codes for
5543 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5544 obscure ANSI requirements
5546 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5547 * fixed bug 148: failure to inline-expand a local function left
5548 garbage, confusing the compiler.
5549 * fixed bugs 3cd: structure slot readers perform type check if the
5550 slot can have an invalid value (i.e. it is either not initialized
5551 or can be written with a less specific slot writer).
5552 * bug fix: the compiler now traps array references to elements off
5553 the end of an array; previously, the bounds checking in some
5554 circumstances could go off-by-one.
5555 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5557 * type declarations for array element types now obey the description
5558 on the CLHS page "Declaration TYPE", as per discussions on
5559 sbcl-help around 2003-05-08. This means that a declaration
5560 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5561 declaration, all references to BAR will be asserted or assumed
5562 (with THE, so dependent on compiler policy) to involve objects of
5563 type FOO. Note that no such declaration is implied in
5564 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5565 * declared types of functions from the "Conditions"
5566 chapter. (reported by Paul Dietz)
5567 * bug fix: CERROR accepts a function as its first argument.
5568 * bug fix: NTH an NTHCDR accept a bignum as index
5569 arguments. (reported by Adam Warner)
5570 * optimization: character compare routines now optimize comparing
5571 against a constant character. (reported by Gilbert Baumann)
5572 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5573 argument now works properly on the MIPS platform.
5574 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5575 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5576 declared to have a functional type, does not cause an error
5578 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5579 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5580 * fixed bug: if last continuation of a deleted block has a
5581 destination, this destination should be deleted too. (reported by
5583 * fixed a bug in the bootstrap process: the host compiler's values
5584 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5585 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5586 test case from Patrik Nordebo)
5587 * improved the ability of the disassembler on the PPC platform to
5588 provide helpful disassembly notes.
5589 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5590 the class in more cases than previously.
5591 * bug fix: FILE-POSITION now understands :START and :END for
5592 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5593 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5594 8) data. (thanks to David Lichteblau)
5595 * bug fix: it is possible to add a method to a generic function
5596 without lambda list.
5597 * bug fix: reader failed to signal END-OF-FILE inside an
5598 object representation. (reported by Nikodemus Siivola)
5599 * fixed some bugs revealed by Paul Dietz' test suite:
5600 ** LAST and [N]BUTLAST should accept a bignum.
5601 ** condition slot accessors are methods.
5602 ** (VECTOR NIL) is a subtype of STRING.
5604 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5605 * minor incompatible change: some nonsensical specialized lambda
5606 lists (used in DEFMETHOD) which were previously ignored now signal
5608 * minor incompatible change: the system is now aware of the types of
5609 variables in the COMMON-LISP package, and will signal errors for
5610 most violations of these type constraints (where previously they
5611 were silently accepted).
5612 * minor incompatible change: COMPILE-FILE now uses the freedom
5613 afforded (ANSI 3.2.2.3) to use derived function types for
5614 functions defined in the same file. This also permits the system
5615 to warn on static type mismatches and function
5616 redefinition. (Currently it does not work with high DEBUG level.)
5617 * minor incompatible change: VALUES declaration is disabled.
5618 * When issuing notes, the compiler now signals a condition of type
5619 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5620 restart for use in user handlers. It is expected that the
5621 COMPILER-NOTE condition will eventually become a condition
5622 supertype to a hierarchy of note types, which will then be
5623 handleable in a similar fashion. However, at the moment, no such
5624 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5625 but it's an implementation detail, not a classification for the
5627 * Changes in type checking closed the following bugs:
5628 ** type checking of unused values (192b, 194d, 203);
5629 ** template selection based on unsafe type assertions (192c, 236);
5630 ** type checking in branches (194bc).
5631 * A short form of VALUES type specifier has ANSI meaning (it has
5632 increased the number of situations when SBCL cannot perform type
5634 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5635 keywords or constants is permissible.
5636 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5637 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5638 classes. (thanks to Antonio Martinez)
5639 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5640 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5641 argument to a pretty-print stream. Instead, it leaves any such
5642 operations to DESCRIBE-OBJECT methods.
5643 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5645 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5646 lambda lists. (thanks to David Lichteblau)
5647 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5648 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5649 (thanks to Gerd Moellmann)
5650 * fixed bug 246: increased compilation speed of long
5651 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5653 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5655 * DEFCONSTANT now throws a condition of type
5656 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5657 constant to a non-EQL value; CONTINUE and ABORT restarts
5658 respectively change and preserve the value.
5659 * fixed bug 63: The code walker, part of the implementation of CLOS,
5660 is now better at handling symbol macros.
5661 * bug fix: There is no longer an internal implementation type named
5662 CL:LENGTH. (reported by Raymond Toy)
5663 * bug fix: In macro-like defining macros/special operators the
5664 implicit block does not enclose the lambda list.
5665 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5666 enclosed in parentheses) are not suitable as type specifiers, and
5667 their use properly signals an error now.
5668 * bug fix: An argument count mismatch for a type specifier in code
5669 being compiled no longer causes an unhandled error at compile
5670 time, but signals a compile-time warning.
5671 * fixed simple vector readable printing
5672 * bug fix: DESCRIBE takes more care over whether the class
5673 precedence list slot of a class is bound before accessing it.
5674 (reported by Markus Krummenacker)
5675 * bug fix: FORMATTER can successfully compile pretty-printer format
5676 strings which use variants of the ~* directive inside.
5677 * bug fix: SEARCH now applies its TEST predicate to the elements of
5678 the arguments in the correct order. (thanks to Wolfhard Buss)
5679 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5680 in type inference. (thanks to Robert E. Brown)
5681 * bug fix: Reading in symbols with an explicit package name of ""
5682 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5683 * fixed some bugs revealed by Paul Dietz' test suite:
5684 ** NIL is now allowed as a structure slot name.
5685 ** Arbitrary numbers, not just REALs, are allowed in certain
5686 circumstances in LOOP for-as-arithmetic clauses.
5687 ** Multiple class redefinitions before slot access no longer
5688 causes a type error.
5689 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5690 association between the name and a class.
5691 ** Generic functions with non-standard method-combination and over
5692 five methods all of which return constants no longer return NIL
5693 after the first few invocations. (thanks to Gerd Moellmann)
5694 ** CALL-NEXT-METHOD with no arguments now passes the original
5695 values of the arguments, even in the presence of assignment.
5696 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5698 ** DISASSEMBLE works with closures and funcallable instances.
5699 ** ADD-METHOD now returns the generic function, not the new method.
5700 ** FIND-METHOD signals an error if the lengths of the specializers
5701 is incompatible with the generic function, even if the ERRORP
5703 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5704 which its argument is a member.
5705 ** DEFCLASS only redefines the class named by its class-name
5706 argument if that name is the proper name of the class;
5707 otherwise, it creates a new class.
5708 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5709 of the UNBOUND-SLOT condition to the name of the slot.
5710 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5711 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5712 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5713 SLOT-MAKUNBOUND in the specified fashion.
5715 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5716 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5717 cross-compilation host. As a consequence, we can now bootstrap our
5718 way up to SBCL starting with a bare gcc toolchain and human-readable
5719 source code (first the source to CLISP, then the source to SBCL).
5720 * A contributed module containing a partial implementation of the
5721 simple-streams interface has been included. (thanks to Rudi
5723 * A contributed module implementing the RFC1321 Message Digest
5724 Algorithm, known as MD5, has been included.
5725 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5726 no longer has any effect, as the code controlled by this feature
5727 has been deleted. (As far as we know, no-one has ever built using
5728 this feature, and its semantics were confused in any case).
5729 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5730 work on conditions (as required by the ANSI specification),
5731 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5732 expected behaviour on conditions. Users should note, however,
5733 that such behaviour is not required by the ANSI specification,
5734 and so use of this behaviour may render their code unportable.
5735 * fixed some bugs revealed by Paul Dietz' test suite:
5736 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5738 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5739 ** SXHASH on condition objects no longer returns NIL.
5740 ** :ALLOCATION :CLASS slots are better treated; their values are
5741 updated on class redefinition, and initforms inherited from
5742 superclasses are applied.
5743 ** REMOVE-METHOD returns its generic function argument even when
5744 no method was removed.
5745 ** SHARED-INITIALIZE now initializes the values of the requested
5746 slots, including those with :ALLOCATION :CLASS.
5747 ** ALLOCATE-INSTANCE now works on structure classes defined via
5748 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5750 ** SLOT-EXISTS-P now works on conditions, as well as structures
5752 ** MAKE-LOAD-FORM now has the required methods on
5753 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5754 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5755 keyword, and now implements the SLOT-NAMES argument.
5756 ** methods with &OPTIONAL arguments no longer allow too many
5757 arguments to be passed in the call without error.
5758 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5759 option is consistent with the required arguments of the generic
5760 function lambda list.
5761 * bug fix: REQUIRE accepts a string designator. (Thanks to
5763 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5764 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5765 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5766 * bug fix: The compiler now checks for duplicated variables in macro
5768 * bug fix: SETQ on globals returns the correct value.
5769 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5770 not a COMPILER-ERROR (followed by some other strange error on
5771 choosing the CONTINUE restart).
5772 * bug fix: make.sh and friends are now more consistent in the way that
5773 they look for GNU "make".
5775 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5776 * experimental native threads support (on x86 Linux >=2.4 only).
5777 This is not compiled in by default: you need to add :SB-THREAD to
5778 the target features. See the "Beyond ANSI" chapter of the manual
5780 * fix for longstanding nonANSIism: The old distinction between
5781 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5782 The return value from CL:FIND-CLASS is now a CLOS class, and
5783 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5784 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5785 * An interface to the MetaObject Protocol, as described in Kiczales,
5786 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5787 MIT Press, 1991, is available from the SB-MOP package.
5788 * incompatible change: the SB-PCL package should now be considered
5789 a private implementation detail, and no longer a semi-private MOP
5791 * minor incompatible change: due to rearrangement for threads, the
5792 control stack and binding stack are now allocated at arbitrary
5793 addresses instead of being hardcoded per-port. Users affected by
5794 this probably have to be doing advanced things with shared
5795 libraries, and will know who they are.
5796 * minor incompatible change: Previously, all --eval forms used were
5797 processed with READ before any of them were processed with EVAL.
5798 Now each --eval form is processed with both READ and EVAL before
5799 the next --eval form is processed. (Thus package operations like
5800 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5801 work as the user might reasonably expect.)
5802 * minor incompatible change: *STANDARD-INPUT* is now only an
5803 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5805 * minor incompatible change: Y-OR-N-P is now character-oriented,
5806 not line oriented. Also, YES-OR-NO-P now works without errors.
5807 (thanks to Antonio Martinez)
5808 * sb-aclrepl module improvements: an integrated inspector, added
5809 repl features, and a bug fix to :trace command.
5810 * Known functions, which cannot be open coded by the backend, are
5811 considered to be able to check types of their arguments. (fixing
5812 a bug report by Nathan J. Froyd)
5813 * fixed a bug in computing method discriminating functions: It is
5814 now possible to define methods specialized on classes which have
5815 forward-referenced superclasses. (thanks to Gerd Moellmann)
5816 * fixed evaluation order in optional entries (reported by Gilbert
5818 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5819 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5820 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5821 required-by-AMOP NAME argument, as well as CLASS and
5822 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5823 * fixed bug 20: DEFMETHOD can define methods using names that are
5824 not the proper names of classes to designate class specializers.
5825 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5826 Unix file descriptors, instead of blowing up. (thanks to Antonio
5828 * Garbage collection refactoring: user-visible change is that a
5829 call to the GC function during WITHOUT-GCING will not do garbage
5830 collection until the end of the WITHOUT-GCING. If you were doing
5831 this you were probably losing anyway.
5832 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5833 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5834 TYPEP the latter but not the former.
5835 * The compiler issues a full WARNING for calls to undefined functions
5836 with names from the CL package.
5837 * MAP-INTO for a vector destination is open coded. (reported by
5838 Brian Downing on c.l.l)
5839 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5840 documentation string.
5841 * fixed some bugs revealed by Paul Dietz' test suite:
5842 ** COPY-ALIST now signals an error if its argument is a dotted
5844 ** Condition slots are now accessed more correctly in the presence
5845 of multiple initargs for a given slot.
5846 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5847 exclude restarts of the same name associated with a different
5849 ** DEFCLASS of forward-referenced classes with another
5850 forward-referenced class in the superclasses list no longer
5852 ** Condition slots are now initialized once each, not multiple
5853 times. (thanks to Gerd Moellmann)
5854 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5856 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5857 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5858 arguments contain duplicated elements.
5859 ** RESTART-CASE understands local macros.
5860 ** RESTART-CASE associates exactly its own restarts with a condition.
5861 ** ENDP in safe mode checks its argument to be of type LIST.
5862 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5863 in question is unbound.
5864 ** Optimized MAKE-INSTANCE functions no longer cause internal
5865 assertion failures in the presence of duplicate initargs.
5866 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5867 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5868 propagated even in the ctor optimized implementation of
5870 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5872 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5873 * a better implementation of SXHASH on (simple) bit vectors,
5874 measured both in execution speed and in distribution of results
5875 over the positive fixnums, has been installed. Likewise, a better
5876 implementation of EQUAL for simple bit vectors is now available.
5877 * fixed CEILING optimization for a divisor of form 2^k.
5878 * fixed bug 240 (emitting extra style warnings "using the lexical
5879 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5880 by Antonio Martinez)
5881 * fixed SXHASH, giving different results for NIL depending on type
5882 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5883 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5884 variable. (found by Rolf Wester)
5885 * SBCL does not ignore type declarations for special
5886 variables. (reported by rif on c.l.l 2003-03-05)
5887 * some bug fixes in contrib/sb-aclrepl/
5888 * fixed some bugs revealed by Paul Dietz' test suite:
5889 ** a bug in the CONS type specifier, whereby the CAR and CDR
5890 types got intertwined, has been fixed;
5891 ** the type system is now able to reason about the interaction
5892 between INTEGER and RATIO types more completely;
5893 ** APPEND, [N]REVERSE and NRECONC check that those their
5894 arguments, which must be proper lists, are really so;
5895 ** An array specialized to be unable to hold elements has been
5896 implemented, as required -- yes, really -- by ANSI;
5897 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5898 on malformed property lists;
5900 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5901 * incompatible packaging change: in line with Unix convention,
5902 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5903 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5904 * REQUIRE and PROVIDE are now optionally capable of doing something
5905 useful. See the documentation string for REQUIRE.
5906 * infrastructure for a managed SBCL contrib system: contributed
5907 modules in this release include:
5908 ** the ASDF system definition facility;
5909 ** an interface to the BSD Sockets API;
5910 ** an ACL-like convenience interface to the repl;
5911 (thanks to Kevin Rosenberg)
5912 ** an implementation of ROTATE-BYTE, with efficient implementation
5914 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5915 gives a closer approximation to the right answer than previously.
5916 (thanks to Raymond Toy)
5917 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5918 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5919 optional environment arguments, as required by ANSI.
5920 * fixed bugs in other functions taking environment objects, allowing
5921 calls with an explicit NIL environment argument to be compiled
5923 * fixed bug 228: primary return values from
5924 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5925 COMPILE or FUNCTION.
5926 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5927 :TYPE will no longer signal errors on innocuous objects.
5928 * fixed bug 231b: SETQ is better at respecting type declarations in
5929 the lexical environment.
5930 * fixed a bug in DEFCLASS: classes named by symbols with no or
5931 unprintable packages can now be defined.
5932 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5933 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5934 * fixed compiler failure related to checking types of functions.
5935 (reported by Robert E. Brown)
5936 * the compiler is now much more consistent in its error-checking
5937 treatment of bounding index arguments to sequence functions: in
5938 (SAFETY 3) code, errors will be signalled in almost all cases if
5939 invalid sequence bounding indices are passed to functions defined
5940 by ANSI to operate on sequences.
5941 * fixed a bug in the build procedure: documentation of SBCL-specific
5942 packages is now preserved and available in the final Lisp image.
5943 * lifted FDEFINITION lookup out of loops in the implementation of
5944 many list operations. (thanks to Robert E. Brown)
5945 * fixed a bug in the reader: the #n# reader macro now works for
5946 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5947 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5948 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5949 E. Brown and Tony Martinez respectively)
5950 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5951 SLOT-BOUNDP: in particular, it is now able to optimize them much
5952 better, and is now not vulnerable to having packages renamed.
5953 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5954 always called when a slot is not present in an instance. (thanks
5956 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5957 longer signal an error on unreading a character following EOF on
5958 the previous constituent stream. (thanks to Tony Martinez)
5959 * fixed some bugs revealed by Paul Dietz' test suite:
5960 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5961 not just nonnegative fixnums;
5962 ** the logical bit-array operators such as BIT-AND now accept an
5963 explicit NIL for their "opt-arg" argument (to indicate a
5964 freshly-consed result bit-array);
5965 ** ELT now signals an error on an invalid sequence index in safe
5967 ** the type system is now cleverer about negations of numeric
5968 types, and consequently understands the BIGNUM and RATIO types
5970 ** the type system is now cleverer about the interaction between
5971 INTEGER and RATIO types: while bugs still remain, many more
5972 cases are accurately computed;
5973 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5974 if it is in the last clause;
5975 ** CONSTANTLY now correctly returns a side-effect-free function in
5977 ** DECLARE is no longer treated as a special-operator; in
5978 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5979 * incremented fasl file version number due to the change in the
5980 DEFSTRUCT-SLOT-DESCRIPTION structure.
5982 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5983 * minor incompatible change: code processed by the "interpreter" or
5984 EVAL now has a compilation optimization policy of (DEBUG 2)
5985 (changed from (DEBUG 1)) to improve debuggability of interactive
5986 development, and to allow the use of the debug RETURN command in
5988 * an experimental implementation of the RETURN command for the
5989 debugger has been included. (thanks to Frederik Kuivinen)
5990 * fixed bug 62: constraints were not propagated into a loop.
5991 * fixed bug in embedded calls of SORT (reported and investigated by
5993 * fixed some bugs revealed by Paul Dietz' test suite:
5994 ** printing and reading of arrays with some dimensions having
5995 length 0 (thanks to Gerd Moellmann);
5996 ** BOA constructor with &AUX argument without a default value does
5997 not cause a type error;
5998 ** CONSTANTP now returns true for all self-evaluating objects.
6000 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6001 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6002 accessors that are related by inheritance, as specified in the
6003 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6004 Valtteri Vuorikoski)
6005 * The compiler is now able to inline functions that were defined in
6006 a complex lexical environment (e.g. inside a MACROLET).
6007 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6009 * Support for the upcoming FreeBSD-5.0 release has been included.
6010 (thanks to Dag-Erling Smorgrav)
6011 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6012 effect when it is not in a toplevel context.
6013 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6014 stand a better chance of being correct. (thanks to Gerd
6016 * fixed bug in COERCE, which now signals an error on coercing a
6017 rational to a bounded real type which excludes the expected
6019 * The compiler is now able to derive types more accurately from the
6020 COERCE and COMPILE functions.
6021 * fixed bug 223: functional binding is considered to be constant
6022 only for symbols in the CL package.
6023 * fixed bug 231: SETQ did not check the type of a variable being set
6024 (reported by Robert E. Brown)
6025 * A new optimization for MAKE-INSTANCE has been included, fixing
6026 various bugs (including relating to :ALLOCATION :CLASS slots and
6027 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6029 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6030 ** As required by ANSI, LOOP now disallows anonymous collection
6031 clauses such as COLLECT I in conjunction with aggregate boolean
6032 clauses such as THEREIS (= I 1);
6033 ** LOOP now signals an error when any variable is reused in the
6034 same loop (including the potentially useful construct analogous
6035 to WITH A = 1 WITH A = (1+ A);
6036 ** IT is only a special loop symbol within the first clause of a
6037 conditional loop clause;
6038 ** LOOP with a typed iteration variable over a hashtable now
6039 signals a type error iff it should.
6040 * fixed some other bugs revealed by Paul Dietz' test suite:
6041 ** FILE-STREAM now names the class previously known as FD-STREAM;
6042 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6043 argument) no longer signals an error;
6044 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6045 of the slot symbol, rather than using the current package
6046 ((:CONC-NAME "") continues to intern the slot's name in the
6048 * incremented fasl file version number, because of the incompatible
6049 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6050 of the new implementation of DEFINE-COMPILER-MACRO.
6052 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6053 * Support for building SBCL for MIPS platforms running in
6054 little-endian mode has now been checked in, and basic
6055 functionality on said platforms verified.
6056 * minor incompatible change: PCL now records the pathname of a file
6057 in which methods and the like are defined, rather than its
6059 * minor incompatible change: TRUENAME now considers the truename of
6060 a file naming a directory to be the pathname with :DIRECTORY
6061 component indicating that directory.
6062 * minor incompatible change: a NAMED clause in the extended form of
6063 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6064 reason for the previous behaviour is unclear.
6065 * more systematization and improvement of CLOS and MOP conformance
6066 in PCL (thanks to Gerd Moellman and Pierre Mai):
6067 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6069 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6070 primary methods with no specializers;
6071 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6073 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6074 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6075 FORWARD-REFERENCED-CLASSes; error reporting on
6076 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6078 ** SXHASH on CLOS instances now uses a slot internal to the
6079 instance to return different numbers on distinct instances,
6080 while preserving the same return value through invocations of
6082 ** DEFMETHOD signals errors when methods with longer incongruent
6083 lambda lists are added to generic functions;
6084 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6085 CLASS, as specified in AMOP;
6086 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6087 on the order returned by the primary method for classes of
6088 class STANDARD-CLASS;
6089 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6090 * fixed some bugs shown by Paul Dietz' test suite:
6091 ** DOLIST puts its body in TAGBODY;
6092 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6094 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6095 value producing form;
6096 ** if more variables are given to PROGV than values, extra
6097 variables are bound and made to have no value;
6098 ** NSUBSTITUTE on list arguments gets the right answer with
6100 ** ELT signals an error of type TYPE-ERROR when the index argument
6101 is not a valid sequence index;
6102 ** LOOP signals (at macroexpansion time) an error of type
6103 PROGRAM-ERROR when duplicate variable names are found;
6104 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6105 ** FUNCALL of special-operators now cause an error of type
6107 ** PSETQ now works as required in the presence of side-effecting
6108 symbol-macro places;
6109 ** NCONC accepts any object as its last argument;
6110 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6112 ** loop-for-as-package does not require a package to be explicitely
6114 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6116 * fixed bug 166: compiler preserves "there is a way to go"
6117 invariant when deleting code.
6118 * fixed bug 172: macro lambda lists with required arguments after
6119 &REST arguments now cause an error to be signalled. (thanks to
6121 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6122 bug. (thanks to Matthew Danish)
6123 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6125 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6126 arguments are lexically rebound. (thanks to Gerd Moellmann and
6128 * fixed bug 194: error messages are now more informative when there
6129 is no primary method applicable in a call to a generic
6130 function. (thanks to Gerd Moellmann)
6131 * fixed bug in command line argument checking (thanks to Julian
6133 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6134 (thanks to Matthew Danish)
6135 * incremented fasl file version number, because of the
6136 SXHASH-related changes in the layout of CLOS data structures
6138 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6139 * minor incompatible change: The runtime (the Unix executable named
6140 "sbcl") is now much pickier about the .core files it will load.
6141 Essentially it now requires .core files to descend from the same
6142 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6143 as the runtime does. (The intent is to prevent the crashes which
6144 can occur, and which can even be reported as mysterious failures,
6145 when people patch the sources or change the build parameters
6146 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6147 sbcl and .core files.)
6148 * fixed bug: VALUES-LIST is no longer optimized away.
6149 * fixed bug 142: The FFI conversion of C string values to Lisp
6150 string values no longer conses excessively. (thanks to Nathan
6151 Froyd porting Raymond Toy's fix to CMU CL)
6152 * began to systematize and improve MOP conformance in PCL (thanks to
6153 Nathan Froyd, Gerd Moellman and Pierre Mai):
6154 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6156 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6157 ** FINALIZE-INHERITANCE is now called on class finalization;
6158 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6159 argument precedence order.
6160 * fixed bug 202: The compiler no longer fails on functions whose
6161 derived types contradict their declared type.
6162 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6163 so it can be non-toplevel.
6164 * The fasl file version number has changed (because of the new
6165 implementation of DEFMACRO).
6166 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6167 safe code, that any length requirement by their type-specifier
6168 argument is valid. The exceptions to this are described in bug
6170 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6171 functions now check the types of their inputs as required by ANSI.
6172 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6173 introduced symbol is DECLAREd to be SPECIAL.
6174 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6175 * fixed bug: :COUNT argument to sequence functions may be negative
6176 * fixed bug: body of DO-SYMBOLS may contain declarations
6177 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6178 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6179 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6180 symbol macro only once
6181 * fixed printing of call frame when argument list is unavailable
6182 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6183 * compiler no longer signals WARNING on unknown keyword
6186 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6187 * A beta-quality port to the mips architecture running Linux,
6188 based on the old CMUCL backend, has been made. It has been tested
6189 on a big-endian kernel, and works sufficiently well to be able to
6190 rebuild itself; it has not been tested in little-endian mode.
6191 * fixed an inconsistency between gencgc.c and purify.c which made
6192 dumping/loading .core files unreliable
6193 * fixed bug 120a: The compiler now deals correctly with IFs where
6194 the consequent is the same as the alternative, instead of
6195 misderiving the return type. (thanks to Alexey Dejneka)
6196 * fixed bug 113: Logical pathnames are now dumpable (the logical
6197 host is resolved at load-time, throwing an error if it is not
6199 * fixed bug 174: FORMAT's error message is slightly clearer when a
6200 non-printing character is used in a format directive.
6201 * fixed several bugs in compiler checking of type declarations, i.e.
6202 violations of the Python "declarations are assertions" principle
6203 (thanks to Alexey Dejneka)
6204 * fixed several bugs in PCL's error checking (thanks to Gerd
6206 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6208 * fixed bug in compilation of functions as first class values
6209 (thanks to Antonio Martinez-Shotton)
6210 * The compiler's handling TYPE-ERRORs which it can prove will
6211 inevitably happen at runtime has been cleaned up and corrected
6212 in several ways. (thanks to Alexey Dejneka)
6213 * improved argument type checking for various basic arithmetic
6214 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6215 lavished on them in the past that they can be compiled in many
6216 ways in different special cases
6217 * fixed bug 181: compiler checks validity of user supplied type
6219 * cleaned up code flushing in optimization: Function calls which
6220 should signal errors for safety purposes (e.g. which ANSI says
6221 should signal errors when their arguments are of incorrect type)
6222 are no longer optimized away.
6223 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6224 * incremented fasl file version number, because changes in the
6225 implementation of sequence functions like COERCE caused
6226 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6227 in old inline expansions) to become undefined. (Actually these
6228 changes were later undone, so we might very well be binary
6229 compatible with 0.7.7 after all, but leaving the version number
6230 incremented seemed like the simplest and most conservative
6233 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6234 * An alpha-quality port to the parisc architecture running Linux,
6235 based on the old CMUCL backend, has been made. This, even more so
6236 than the other backends, should be considered still a work in
6237 progress; known problems include that the Linux kernel in 64-bit
6238 mode does not propagate the correct sigcontext structure to
6239 userspace, and consequently SBCL on a parisc64 kernel will not
6241 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6242 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6243 suppressed.) Also now that the compiler is looking at declarations
6244 in the environment, it checks optimization declarations as well,
6245 and suppresses inlining when (> DEBUG SPEED).
6246 * More fixes have been made to treatment of floating point exception
6247 treatment and other Unix signals. In particular, floating point
6248 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6249 * The detection and handling of control stack exhaustion (infinite
6250 or very deeply nested recursion) has changed. Stack exhaustion
6251 detection is now done by write-protecting pages at the OS level
6252 and applies at all optimization settings; when found, a
6253 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6254 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6255 be caught using IGNORE-ERRORS.
6256 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6257 correctly when transforming recursive LABELS functions to LETs.
6258 (thanks to Alexey Dejneka)
6259 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6260 that are names of constants or global variables.
6261 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6262 alien routines with docstrings.
6263 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6264 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6266 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6267 (thanks to Eric Marsden)
6268 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6269 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6270 * Bug fix: The SPARC backend can now compile functions involving
6271 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6272 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6273 to a functions expecting a PATHNAME-DESIGNATOR.
6274 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6275 lambda lists. (thanks to Alexey Dejneka)
6276 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6277 functions so that EXPORTing the name of the class doesn't cause
6278 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6279 to Antonio Martinez for reporting this)
6280 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6281 constant-folded without failing an assertion. (thanks to Einar
6282 Floystad Dorum for reporting this)
6283 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6284 types are now dealt with more correctly by the compiler.
6285 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6286 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6287 behaviour analogous to RENAME-FILE. This puts its behaviour more
6288 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6290 * The fasl file version number has changed again. (because of the
6291 bug fix involving the names of PCL MAKE-INSTANCE functions)
6293 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6294 * bug fix: Floating point exceptions are treated much more
6295 consistently on the x86/Linux and PPC/Linux platforms.
6296 * Array initialization with :INITIAL-ELEMENT is now much faster for
6297 cases when the compiler cannot open code the array creation, but
6298 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6299 array accesses have also seen a speed increase.
6300 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6301 specified. (This was at the root of some bad interactions between
6302 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6304 * bug fix: Internal error arguments for undefined functions are now
6305 computed correctly on the PPC/Linux platform.
6306 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6307 Raymond Toy's patch for CMU CL)
6308 * Support for the Solaris 9 operating environment has been included
6309 (thanks to Daniel Merritt)
6310 * A very ugly but hopefully complete draft of the missing FFI chapter
6311 of the manual has been created by reformatting the corresponding
6312 CMU CL manual chapter into (currently very ugly and incoherent)
6313 DocBook and bringing it up to date for SBCL behavior. Thus, the
6314 manual is now essentially complete, at least by my extreme
6315 once-and-only-once standards, whereby it's acceptable to refer to
6316 the doc strings of SB-EXT functions as the primary documentation.
6317 * The fasl file version number has changed again, due to cleanup of
6318 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6319 is no longer a static symbol.)
6321 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6322 * SBCL now builds with OpenMCL (version 0.12) as the
6323 cross-compilation host; also, more progress has been made toward
6324 bootstrapping under CLISP.
6325 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6327 * bug 158 fixed: The compiler can now deal with integer loop
6328 increments different from 1; fixing this turned out also to fix
6330 * bug 169 fixed: no more bogus warnings about using lexical bindings
6331 despite the presence of perfectly good SPECIAL declarations (thanks
6332 to David Lichteblau)
6333 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6334 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6335 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6337 * bug 180 fixed: Method combination specifications no longer ignore
6338 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6339 * bug fix: Structure type predicate functions now check their argument
6340 count as they should.
6341 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6342 correctly. (thanks to Pierre Mai)
6343 * minor incompatible change: The --noprogrammer option is deprecated
6344 in favor of the new --disable-debugger option, which is very similar.
6345 (The major difference is that it takes effect at a slightly different
6346 time at startup, causing handling of errors in --sysinit and
6347 --userinit files will be affected differently.) The
6348 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6349 been added to allow this functionality to be controlled from ordinary
6350 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6351 maintainers, who might want to run non-interactive scripts to
6352 build SBCL cores which will later be used interactively.)
6353 * minor incompatible change: The LOAD function no longer, when given
6354 a wild pathname to load, loads all files matching that pathname.
6355 Instead, an error of type FILE-ERROR is signalled.
6357 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6358 * bug 147 fixed: The compiler preserves its block link/count
6359 invariants more correctly now so that it doesn't crash. (thanks
6361 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6363 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6364 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6365 no-value-for-this-character as NIL (as specified by ANSI).
6366 * HOST-NAMESTRING on physical pathnames now returns a string that is
6367 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6368 (thanks to Christophe Rhodes)
6369 * The Alpha port handles icache flushing more correctly. (thanks to
6371 * More progress has been made toward bootstrapping under CLISP. (thanks
6372 to Christophe Rhodes)
6373 * The fasl file format has changed again, because dynamic loading
6374 on OpenBSD (which has non-ELF object files) motivated some cleanups
6375 in the way that foreign symbols are transformed and passed around.
6376 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6377 is no longer treated as whitespace by the reader, but instead as
6378 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6379 |A
\x7fB|, instead of A as it used to.
6381 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6382 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6383 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6384 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6385 this as of 0.7.1.45, but was left out of the previous news section
6386 (thanks to Dan Barlow)
6387 * SBCL now runs on the Solaris operating system on SPARC architectures
6388 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6389 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6390 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6391 * SPARC backend cleanups, allowing builds of cores optimized for V8
6392 and V9 SPARCS, and also emission of code targeted to a particular
6393 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6395 * SBCL is closer to bootstrapping under CLISP, thanks to various
6396 fixes by Christophe Rhodes.
6397 * The fasl file format has changed again, to allow the compiler's
6398 INFO database to support symbol macros.
6399 * The user manual (in doc/) is formatted into HTML more nicely.
6400 (thanks to coreythomas)
6401 * The system is smarter about SUBTYPEP relationships, especially
6402 those involving NOT types (including types such as ATOM which are
6403 represented internally using NOT types). Thus SUBTYPEP is less
6404 likely to return (VALUES NIL NIL) in general, and in particular
6405 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6407 * The fasl file format has changed again, because the internal
6408 representation of types now includes a new slot to support the new
6409 SUBTYPEP-of-NOT-types logic.
6410 * (not a change in the main branch of SBCL, but a related prototype
6411 which can hopefully be merged into the main branch of SBCL in the
6412 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6413 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6414 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6415 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6416 dispatch macro character combinations. (thanks to Alexey Dejneka)
6417 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6418 that superficially look like logical namestrings correctly.
6419 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6421 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6422 default supplied-p) for &optional and &key arguments. (thanks to
6425 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6426 * incompatible change: The compiler is now less aggressive about
6427 tail call optimization, doing it only when (> SPACE DEBUG) or
6428 (> SPEED DEBUG). (This is an incompatible change because there are
6429 programs which relied on the old CMU-CL-style behavior to optimize
6430 away their unbounded recursion which will now die of stack overflow.)
6431 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6432 for non-GENCGC systems has been increased to 20M (since that
6433 seems much closer to the likely performance optimum for modern
6434 systems than the old 4M value was)
6435 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6436 and *DEBUG-PRINT-LEVEL*
6437 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6438 of CMU CL's support for SPARC, and various endianness and other
6439 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6440 * new syntactic sugar for the Unix command line: --load foo.bar is now
6441 an alternate notation for --eval '(load "foo.bar")'.
6443 ** The system now detects stack overflow and handles it gracefully,
6444 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6445 optimization settings. (This is a good thing in general, and
6446 its introduction in this version should be particularly timely
6447 for anyone whose code fails because of suppression of tail
6449 ** The system now hunts for the C variable "environ" in a more
6450 devious way, to avoid segfaults when the C library version differs
6451 between compile time and run time. (thanks to Christophe Rhodes)
6452 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6453 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6454 ** The compiler no longer issues bogus style warnings for undefined
6455 classes in the same source file as the DEFCLASSes which defined
6456 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6458 ** fixes in CONDITION class precedence list for undefined function
6459 errors (thanks to Alexei Dejneka)
6460 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6461 correctly. (thanks to Dan Barlow)
6462 ** portability fixes aiming at bootstrapping under CLISP (thanks
6463 to Dave McDonald and Christophe Rhodes)
6464 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6465 ** fixes in type translation and and type inference (thanks to
6467 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6468 ** various fixes in the new ports (thanks to Dan Barlow)
6469 * several changes related to debugging:
6470 ** suppression of tail recursion, as noted above
6471 ** stack overflow detection, as noted above
6472 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6473 is now the default. (For some time encapsulation has been more
6474 reliable than the breakpoint-based :ENCAPSULATE NIL
6475 implementation, at least on X86 systems; and I just noticed that
6476 encapsulation also seems closer to the spirit of the ANSI
6479 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6481 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6482 up properly again. (There was a packaging bug in 0.7.0 which
6483 left their definitions in SB-SYS::LOAD-FOREIGN and
6484 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6485 vital for most things which interface to C-level interfaces,
6486 like extensions working with sockets or databases or
6487 Perl-compatible regexes or whatever, and the need to fix
6488 this bug is the main reason that 0.7.1 was released so
6490 ** DEFGENERIC is now choosier about the methods it redefines, so that
6491 reLOADing a previously-LOADed file containing DEFGENERICs does
6492 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6493 cycle now works as it should. (thanks to Alexey Dejneka)
6494 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6495 fixed by Christophe Rhodes. (He actually submitted this patch
6496 months ago, and I delayed until after 0.7.0.)
6497 ** Bug 111 (internal compiler confusion about runtime checks on
6498 FUNCTION types) was fixed by Alexey Dejneka.
6499 * Some internal cleanups (getting rid of variables which aren't
6500 needed now that the byte interpreter is gone) caused the fasl
6501 file format number to change again.
6503 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6504 * major incompatible change: The default fasl file extension, i.e. the
6505 default extension for files produced by COMPILE-FILE, has changed
6506 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6508 ** There are many changes in the implementation of the compiler.
6509 SBCL is now essentially a compiler-only implementation of ANSI
6510 Common Lisp. EVAL still "interprets" a few special cases, but
6511 almost all the interesting cases are handled by creating
6512 a LAMBDA expression, calling COMPILE on it, then calling
6513 FUNCALL on the result.
6514 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6515 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6516 Since the code is newer, there might still be some new bugs
6517 (though not as many as before Martin Atzmueller's fixes:-). But
6518 the new code is substantially simpler and clearer, and hopefully
6519 any remaining bugs will be simpler, less fundamental, and more
6520 fixable then the bugs in the old code.
6521 ** The revised compiler is still a little unsteady on its feet.
6523 *** The debugging information it produces (particularly the names
6524 of FUNCTION objects) is sometimes much less useful than what
6525 the old compiler produced.
6526 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6527 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6528 within a MACROLET) has been temporarily weakened.
6529 ** There are new compiler optimizations for various functions:
6530 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6531 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6532 *** the math functions TRUNCATE, FLOOR, and CEILING
6533 *** the function-of-all-trades COERCE
6534 Mostly these should be transparent, but there's one
6535 potentially-annoying problem (bug 117): when the compiler
6536 inline-expands a function and does type analysis on the result,
6537 it can create control paths which have type mismatches, and
6538 when it can't prove that those control paths aren't taken,
6539 it will issue WARNINGs about the type mismatches. This is
6540 a particular problem in practice for the new sequence functions.
6541 It's not clear how this should be fixed, and for now, a
6542 workaround is given in the entry for 117 in the BUGS file.
6543 ** (Because of the interaction between the two previous items --
6544 occasional inlining problems and new inline expansions -- some
6545 of the new sequence function optimizations won't really kick in
6546 completely until debugging information, and then inlining, are
6547 straightened out in some future version.)
6548 * minor incompatible changes:
6549 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6550 DIRECTORY no longer implicitly promotes NIL slots of its
6551 pathname argument to :WILD. In particular, when you ask for the
6552 contents of a directory (which you used to be able to do without
6553 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6554 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6555 ** changes in behavior that ANSI explicitly defines to be
6556 implementation dependent:
6557 *** The new compiler-only implementation still conforms with ANSI,
6558 but acts a little different than before. Besides the obvious
6559 changes in performance tradeoffs (that the cost per form passed
6560 to EVAL has gone up, and the cost per form executed by EVAL
6561 has gone down), the behavior of the system changes a little
6562 because there are no longer any interpreted function objects.
6563 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6564 e.g. doing COMPILE on the output of interactive DEFUN is
6566 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6568 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6569 has changed from (:CL) to NIL.
6570 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6571 e.g. #\Newline and #\Tab, don't have names specified in the
6572 ANSI Common Lisp standard, is now based on their ASCII symbolic
6573 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6574 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6575 are no longer used for output.
6576 ** changes in internal implementation constants:
6577 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6578 4 million. (If your application spends a lot of time GCing and
6579 you have a lot of RAM, you might want to experiment with
6580 increasing it even more.)
6581 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6582 However, almost all old code should still continue to work without
6583 immediate update, as SB-C-CALL is now a (deprecated) nickname
6585 ** Old operator names in the style DEF-FOO are now deprecated in
6586 favor of new corresponding names DEFINE-FOO, for consistency with
6587 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6588 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6589 internal symbols, but a few supported extensions like
6590 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6591 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6592 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6593 etc. as you get deeper into recursive calls to the debugger
6594 command loop, instead of the old "5]", "5]]", "5]]]"
6595 sequence. (I was motivated to do this when squabbles between
6596 ILISP and SBCL left me very deeply nested in the debugger. In the
6597 short term, this change will probably provoke more ILISP/SBCL
6598 squabbles, but hopefully it will be an improvement in the long run.)
6599 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6600 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6601 function, since declaiming return types involving aliens is
6602 (1) annoyingly messy to do by hand and (2) vital to efficient
6603 compilation of code which calls such functions.
6604 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6605 longer reexported by the SB-EXT package. They're solely useful
6606 for alien code, so it seems more logical that you should get
6607 them from the SB-ALIEN package, not in SB-EXT.
6608 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6609 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6610 features. Instead, the code that they used to control is always
6611 built into the system.
6612 * many other bug fixes
6613 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6614 advantage of the new EVAL-WHEN stuff and to clean them up in
6615 general, and they are now more ANSI-compliant in a number of
6616 ways. Martin Atzmueller is responsible for a lot of this.
6617 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6619 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6620 *** correct ERROR type for various file operations
6621 *** some fixes for Lisp streams
6622 *** DEFMETHOD syntax checking
6623 *** changing old weird representation of debug information as
6624 strings (which, among their other deficiencies, don't transform
6625 correctly when you rename packages, and don't change their
6626 print representation when you change things like *PACKAGE*
6627 and *PRINT-LENGTH*) to symbols and lists of symbols
6628 He also made several improvements and fixed several bugs in DESCRIBE.
6629 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6631 *** misbehavior of WRITE-STRING/WRITE-LINE
6632 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6633 and several other LOOP problems as well
6634 *** DIRECTORY when similar filenames are present
6635 *** DEFGENERIC with :METHOD options
6636 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6637 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6638 *** argument ordering in FIND with :TEST option
6639 *** mishandled package designator argument in APROPOS-LIST
6640 *** various problems in the backquote readmacro
6641 *** a bug in APROPOS
6642 *** probably some others that I'm not describing very well here,
6643 since the CVS log documents them by reference to sbcl-devel
6644 messages, and the SourceForge archives aren't working well.:-(
6645 ** Dan Barlow improved the Alpha port (and is making progress on the
6646 PPC port, for those of you who think different).
6647 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6648 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6649 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6650 continues to work on the SPARC port (for those of you in a position
6651 to look down upon our little PC-compatible boxes from a great height).
6652 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6653 and uses that copy, rather than the current dynamic value, when
6654 it's trying to decide whether to truncate output. Thus e.g.
6655 (let ((*print-lines* 50))
6656 (pprint-logical-block (stream nil)
6658 (let ((*print-lines* 8))
6659 (print (aref possiblybigthings i) stream)))))
6660 should now truncate the logical block only at 50 lines, instead of
6661 often truncating it at 8 lines, as it did before.
6662 * The doc/cmucl/ directory, containing old CMU CL documentation
6663 from the time of the fork, is no longer part of the base system.
6664 SourceForge has shut down its anonymous FTP service, and with it
6665 my original plan for distributing the old CMU CL documentation
6666 there. For now, if you need these files you can download an old
6667 SBCL source release and extract them from it.
6668 * The fasl file version number changed again, for dozens of reasons,
6669 some of which are apparent above.
6671 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6672 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6673 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6674 patch, so that DISASSEMBLE output is much nicer.
6675 * The code in the SB-PROFILE package now seems reasonably stable.
6676 I still haven't decided what the final interface should look like
6677 (I'd like PROFILE to interact cleanly with TRACE, since both
6678 facilities use function encapsulation) but if you have a need
6679 for profiling now, you can probably use it successfully with
6680 the current CMU-CL-style interface.
6681 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6682 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6683 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6684 link now returns the dangling link itself, and for similar
6685 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6686 link itself. (In these cases the old code signalled an error and
6687 looped endlessly, respectively.) Thus, DIRECTORY now works even
6688 in the presence of dangling and cyclic symbolic links.
6689 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6690 is now a supported extension again, since the consensus on
6691 sbcl-devel was that it can be useful for ordinary development
6692 work, not just for debugging SBCL itself.
6693 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6694 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6695 that currently-defined functions might be redefined later with
6696 different return types.
6697 * Hash tables can be printed readably, as inspired by CMU CL code
6698 of Eric Marsden and SBCL code of Martin Atzmueller.
6699 * better error handling in CLOS method combination, thanks to
6700 Martin Atzmueller porting Pierre Mai's CMU CL patches
6701 * more overflow fixes for >16Mbyte I/O buffers
6702 * A bug in READ has been fixed, so that now a single Ctrl-D
6703 character suffices to cause end-of-file on character streams.
6704 In particular, now you only need one Ctrl-D at the command
6705 line (not two) to exit SBCL.
6706 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6708 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6709 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6710 does the right thing.
6711 * The implementation of some type tests, especially for CONDITION
6712 types, is now tidier and maybe faster, due to CMU CL code
6713 originally by Douglas Crosher, ported by Martin Atzmueller.
6714 * Some math functions have been fixed, and there are new
6715 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6716 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6717 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6718 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6719 likely to be built into sbcl-0.7.0.)
6720 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6721 CL, ported to SBCL by Martin Atzmueller)
6722 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6723 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6724 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6725 * There's a new slam.sh hack to shorten the edit/compile/debug
6726 cycle for low-level changes to SBCL itself, and a new
6727 :SB-AFTER-XC-CORE target feature to control the generation of
6728 the after-xc.core file needed by slam.sh.
6729 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6730 COMPILE-FILE is no longer supported, so that now every function
6731 gets an entry point, so that block compilation looks a little
6732 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6733 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6734 returns the number of bytes consed since the system started,
6735 rather than the number consed since the first time the function
6736 was called. (The new definition parallels ANSI functions like
6737 CL:GET-INTERNAL-RUN-TIME.)
6738 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6739 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6740 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6741 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6742 * Fasl file version numbers are now independent of the target CPU,
6743 since historically most system changes which required version
6744 number changes have affected all CPUs equally. Similarly,
6745 the byte fasl file version is now equal to the ordinary
6748 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6749 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6750 is no longer recognized. I apologize for this, because it was
6751 listed in SB-EXT as a supported extension, but I found that
6752 its existing behavior was poorly specified, as well as incorrectly
6753 specified, and it looked like too much of a mess to straighten it
6754 out. I have enough on my hands trying to get ANSI stuff to work..
6755 * many patches ported from CMU CL by Martin Atzmueller, with
6756 half a dozen bug fixes in pretty-printing and the debugger, and
6757 half a dozen others elsewhere
6758 * fixed bug 13: Floating point infinities are now supported again.
6759 They might still be a little bit flaky, but thanks to bug reports
6760 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6761 as flaky as they were.
6762 * The --noprogrammer command line option is now supported. (Its
6763 behavior is slightly different in detail from what the old man
6764 page claimed it would do, but it's still appropriate under the
6765 same circumstances that the man page talks about.)
6766 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6767 are now supported, and enabled by default. Thus, the compiler can
6768 handle many floating point and complex operations much less
6769 inefficiently. (Thus e.g. you can implement a complex FFT
6771 * The compiler now detects type mismatches between DECLAIM FTYPE
6772 and DEFUN better, and implements CHECK-TYPE more correctly, and
6773 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6774 thanks to patches from Martin Atzmueller.
6775 * various fixes to make the cross-compiler more portable to
6776 ANSI-conforming-but-different cross-compilation hosts (notably
6777 Lispworks for Windows, following bug reports from Arthur Lemmens)
6778 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6779 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6780 fixed thanks to Pierre Mai's CMU CL patches.
6781 * fixes to keep the system from overflowing internal counters when
6782 it tries to use i/o buffers larger than 16M bytes
6783 * fixed bug 45a: Various internal functions required to support
6784 complex special functions have been merged from CMU CL sources.
6785 (When I was first setting up SBCL, I misunderstood a compile-time
6786 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6787 * improved support for type intersection and union, fixing bug 12
6788 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6789 more obscure bugs as well
6790 * some steps toward byte-compiling non-performance-critical
6791 parts of the system, courtesy of patches from Martin Atzmueller
6792 * Christophe Rhodes has made some debian packages of sbcl at
6793 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6794 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6795 stable, but are nonetheless usable. When he's ready, I'd be happy
6796 to add them to the SourceForge "File Releases" section. (And if
6797 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6798 * new fasl file format version number (because of changes in
6799 internal representation of (OR ..) types to accommodate the new
6800 support for (AND ..) types, among other things)
6802 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6803 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6805 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6807 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6808 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6809 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6810 * DESCRIBE now works on structure objects again.
6811 * Most function call argument type mismatches are now handled as
6812 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6813 know whether the function will be redefined before the call is
6814 executed. (The compiler could flag local calls with full WARNINGs,
6815 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6816 it doesn't keep track of enough information to know whether calls
6817 are local in this sense.)
6818 * Compiler output is now more verbose, with messages truncated
6819 later than before. (There should be some supported way for users
6820 to override the default verbosity, but I haven't decided how to
6821 provide it yet, so this behavior is still controlled by the internal
6822 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6823 src/compiler/ir1util.lisp.)
6824 * Fasl file format version numbers have increased again, because
6825 support for the Gray streams extension changes the layout of the
6826 system's STREAM objects.
6827 * The Gray subclassable streams extension now works, thanks to a
6828 patch from Martin Atzmueller.
6829 * The full LOAD-FOREIGN extension (not just the primitive
6830 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6831 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6832 but like most other programs, it defaults to copying the Unix
6833 environment from the original process instead of starting the
6834 new process in an empty environment.
6835 * Extensions which manipulate the Unix environment now support
6836 an :ENVIRONMENT keyword option which doesn't smash case or
6837 do other bad things. The CMU-CL-style :ENV option is retained
6838 for porting convenience.
6839 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6840 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6842 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6844 * A patch from Martin Atzmueller seems to have solved the SIGINT
6845 problem, and as far as we know, signal-handling now works cleanly.
6846 (If you find any new bugs, please report them!)
6847 * The system no longer defaults Lisp source file names to types
6848 ".l", ".cl", or ".lsp", but only to ".lisp".
6849 * The compiler no longer uses special default file extensions for
6850 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6851 seems to expect a single default extension for all compiled code,
6852 and there's no compelling reason to try to stretch the standard
6853 to allow two different extensions.) Instead, byte-compiled files
6854 default to the same extension as native-compiled files.
6855 * Fasl file format version numbers have increased again, because
6856 a rearrangement of internal implementation packages made some
6857 dumped symbols in old fasl files unreadable in new cores.
6858 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6859 many fewer weird special cases.
6860 * Bug #17 (differing COMPILE-FILE behavior between logical and
6861 physical pathnames) has been fixed, and some related misbehavior too,
6862 thanks to a patch from Martin Atzmueller.
6863 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6864 by Tim Moore, ported to SBCL by Martin Atzmueller.
6865 * Martin Atzmueller fixed several filesystem-related problems,
6866 including bug #36, in part by porting CMU CL patches, which were
6867 written in part by Paul Werkowski.
6868 * More compiler warnings in src/runtime/ are gone, thanks to
6869 more patches from Martin Atzmueller.
6870 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6873 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6875 * DESCRIBE now works on CONDITION objects.
6876 * The debugger now handles errors which arise when trying to print
6877 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6879 * The build system now uses an additional file, customize-target-features.lisp,
6880 to allow local modifications to the target *FEATURES* list. (The point of
6881 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6882 debugging features enabled, without having to worry about propagating it
6883 into everyone's system when I do a "cvs update".) When no
6884 customize-target-features.lisp file exists, the target *FEATURES* list
6885 should be constructed the same way as before.
6886 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6887 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6888 warn about behavior which is undefined under the ANSI spec. Note: This
6889 is specified by ANSI, but it's not very popular with programmers.
6890 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6891 macro in the SBCL sources for an example of a workaround which you
6892 might use to make portable ANSI-standard code which does what you want.
6893 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6894 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6895 when it's used as a non-toplevel form. (This is required in order
6896 to implement the DEFCONSTANT-EQX macro.)
6897 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6898 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6899 funny things, due to bugs in the implementation of EVAL-WHEN
6900 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6901 non-toplevel DEFCONSTANTs are uncommon.)
6902 * The core file version number and fasl file version number have been
6903 incremented, because the old noncompliant DEFCONSTANT behavior involved
6904 calling functions which no longer exist, and because I also took the
6905 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6906 * fixed bug 1 (error handling before read-eval-print loop starts), and
6907 redid debugger restarts and related debugger commands somewhat while
6909 ** The QUIT debugger command is gone, since it did something
6910 rather different than the SB-EXT:QUIT command, and since it never
6911 worked properly outside the main toplevel read/eval/print loop.
6912 Invoking the new TOPLEVEL restart provides the same functionality.
6913 ** The GO debugger command is also gone, since you can just invoke
6914 the CONTINUE restart directly instead.
6915 ** The TOP debugger command is also gone, since it's redundant with the
6916 FRAME 0 command, and since it interfered with abbreviations for the
6918 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6920 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6921 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6922 some porting work by Martin Atzmueller)
6923 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6924 with a boatload of patches which he ported to SBCL. Now that those
6926 ** The system tries to make sure that its low-priority messages
6927 are prefixed by semicolons, to help people who like to use
6928 syntax highlighting in their ILISP buffer. (This patch
6929 was originally due to Raymond Toy.)
6930 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6931 patches originally written by Raymond Toy.
6932 ** The compiler understands coercion between single-value and
6933 multiple-VALUES type expressions better, getting rid of some very
6934 weird behavior, thanks to patches originally by Robert MacLachlan
6935 and Douglas Crosher.
6936 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6937 lambda lists, thanks to a patch originally by Pierre Mai.
6938 ** The system no longer bogusly warns about "abbreviated type
6940 ** The compiler gets less confused by inlining and RETURN-FROM,
6941 thanks to some patches originally by Tim Moore.
6942 ** The system no longer hangs when dumping circular lists to fasl
6943 files, thanks to a patch originally from Douglas Crosher.
6944 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6945 undefined function error.
6946 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6947 in structure slot initforms) for now, documented workaround instead:-|
6948 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6949 * fixed bug 5: added stubs for various Gray stream functions called
6950 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6951 installed, at least appropriate type errors are generated
6952 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6953 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6954 consistently in DEFMETHOD forms.
6955 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6956 it doesn't seem to affect SBCL after all
6957 * The C runtime system now builds with better optimization and many
6958 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6960 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6962 * The system is now under CVS at SourceForge (instead of the
6963 CVS repository on my home machine).
6964 * The new signal handling code has been tweaked to treat register
6965 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6966 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6967 downstream, e.g. in debug-int.lisp, has implicit dependencies
6968 on the unsignedness of integer representation of machine words,
6969 and that caused the system to bomb out with infinite regress
6970 when trying to recover from type errors involving signed values,
6971 e.g. (BUTLAST '(1 2 3) -1).)
6972 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6973 (This was one of the bugs Peter Van Eynde reported back in July.)
6974 * The system now uses code inspired by Colin Walters' O(N)
6975 implementation of MAP (from the cmucl-imp@cons.org mailing
6976 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6977 inline the MAP operation, and there is more than one
6978 sequence argument to the MAP call (so that it can't just
6979 do ETYPECASE once and for all based on the type of the
6980 single sequence argument). (The old non-inline implementation
6981 of the general M-argument sequence-of-length-N case required
6982 O(M*N*N) time when any of the sequence arguments were LISTs.)
6983 * The QUIT :UNIX-CODE keyword argument has been renamed to
6984 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6985 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6987 * Raymond Wiker's patches to port dynamic loading from Linux to
6988 FreeBSD have been added.
6989 * The BUGS file is now more nearly up to date, thanks in large part
6990 to Martin Atzmueller's review of it.
6991 * The debugger now flushes standard output streams before it begins
6992 its output ("debugger invoked" and so forth).
6993 * The core version number and fasl file version number have both
6994 been incremented, because of incompatible changes in the layout
6996 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6997 used to not be called for a saved Lisp image.)
6998 * Martin Atzmueller's version of a patch to fix a compiler crash,
6999 as posted on sbcl-devel 13 September 2000, has been installed.
7000 * Instead of installing Martin Atzmueller's patch for the
7001 compiler transform for SUBSEQ, I deleted the compiler transform,
7002 and transforms for some similar consing operations.
7003 * A bug in signal handling which kept TRACE from working on OpenBSD
7005 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7006 away by constant folding
7007 * The system now defines its address space constants in one place
7008 (in the Lisp sources), and propagates them automatically elsewhere
7009 (through GENESIS and the sbcl.h file). Therefore, patching the
7010 address map is less unnecessarily tedious and error-prone. The
7011 Lisp names of address space constants have also been systematized.
7012 * CVS tags like dollar-Header-dollar have been removed from
7013 the sources, because they have never saved me trouble and
7014 they've been source of trouble working with patches and other
7015 diff-related operations.
7016 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7017 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7019 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7021 * The system has been ported to OpenBSD.
7022 * The system now compiles with a simple "sh make.sh" on the systems
7023 that it's supported on. I.e., now you no longer need to tweak
7024 text in the target-features.lisp-expr and symlinks in src/runtime/
7025 by hand, the make.sh takes care of it for you.
7026 * The system is no longer so grossly inefficient when compiling code
7027 involving vectors implemented as general (not simple) vectors (VECTOR T),
7028 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7029 which dares to use the various sequence functions on non-simple
7030 vectors, takes less of a performance hit.
7031 * There is now a primitive type predicate VECTOR-T-P
7032 to test for the (VECTOR T) type, so that e.g.
7033 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7034 can now be compiled with some semblance of efficiency. (The old code
7035 turned the type declaration into a full call to %TYPEP at runtime!)
7036 * AREF on (VECTOR T) is still not fast, since it's still compiled
7037 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7038 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7039 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7040 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7041 without making full calls to SUBTYPEP at runtime.
7042 (Some analogous efficiency issues for non-simple vectors specialized to
7043 element types other than T, or for non-simple multidimensional arrays,
7044 have not been addressed. They could almost certainly be handled the
7045 same way if anyone is motivated to do so.)
7046 * The changes in array handling break binary compatibility, so
7047 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7048 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7049 instead of (VALUES T T).
7050 * By following the instructions that Dan Barlow posted to sbcl-devel
7051 on 2 July 2000, I was able to enable primitive dynamic object
7052 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7053 functionality is not implemented (since it calls ld to resolve
7054 library references automatically, requiring RUN-PROGRAM for its
7055 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7056 try to resolve library references) is now supported.
7057 * The system now flushes the standard output streams when it terminates,
7058 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7059 them at several other probably-convenient times, e.g. in each pass of
7060 the toplevel read-eval-print loop, and after evaluating a form given
7061 as an "--eval" command-line option. (These changes were motivated by a
7062 discussion of stream flushing issues on cmucl-imp in August 2000.)
7063 * The source transform for TYPEP of array types no longer assumes
7064 that an array whose element type is a not-yet-defined type
7065 is implemented as an array of T, but instead punts, so that the
7066 type will be interpreted at runtime.
7067 * There is now some support for cross-compiling in make.sh: each of
7068 the phases of make.sh has its own script. (This should be transparent
7069 to people doing ordinary, non-cross-compile builds.)
7070 * Since my laptop doesn't have hundreds of megabytes of memory like
7071 my desktop machine, I became more motivated to do some items on
7072 my to-do list in order to reduce the size of the system a little:
7073 ** Arrange for various needed-only-at-cold-init things to be
7074 uninterned after cold init. To support this, those things have
7075 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7076 symbols with such names are now uninterned after cold init).
7077 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7078 fasl files for cold load.
7079 ** Remove the old compiler structure pooling code (which used to
7080 be conditional on the target feature :SB-ALLOC) completely.
7081 ** Redo the representation of some data in cold init to be more compact.
7082 (I also looked into supporting byte compiled code at bootstrap time,
7083 which would probably reduce the size of the system a lot, but that
7084 looked too complicated, so I punted for now.)
7085 * The maximum signal nesting depth in the src/runtime/ support code has
7086 been reduced from 4096 to 256. (I don't know any reason for the very
7087 large old value. If the new smaller value turns out to break something,
7088 I'll probably just bump it back up.)
7089 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7091 * Many, many bugs reported by Peter Van Eynde have been added to
7092 the BUGS list; some have even been fixed.
7093 * While enabling dynamic object file loading, I tried to make the
7094 code easier to understand, renaming various functions and variables
7095 with less ambiguous names, and changing some function calling
7096 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7097 * While trying to figure out how to do the OpenBSD port, I tried to
7098 clean up some of the code in src/runtime/. In particular, I dropped
7099 support for non-POSIX signal handling, added various comments,
7100 tweaked the code to reduce the number of compilation warnings, and
7101 renamed some files to increase consistency.
7102 * To support the new automatic configuration functionality in make.sh,
7103 the source file target-features.lisp-expr has been replaced with the
7104 source file base-target-features.lisp-expr and the machine-generated
7105 file local-target-features.lisp-expr.
7106 * fixed a stupid quoting error in make.sh so that using CMU CL
7107 "lisp -batch" as cross-compilation host works again
7109 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7111 * DESCRIBE no longer tries to call itself recursively to describe
7112 bound/fbound values, so that it no longer fails on symbols which are
7113 bound to themselves (like keywords, T, and NIL).
7114 * DESCRIBE now works on generic functions.
7115 * The printer now prints less-screwed-up representations of closures
7116 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7117 * A private symbol is used instead of the :EMPTY keyword previously
7118 used to mark empty slots in hash tables. Thus
7119 (DEFVAR *HT* (MAKE-HASH-TABLE))
7120 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7121 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7122 now does what ANSI says that it should. (You can still get
7123 similar noncompliant behavior if bang on the hash table
7124 implementation with all the symbols you get back from
7125 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7126 This breaks binary compatibility, since tests for equality to
7127 :EMPTY are wired into things like the macroexpansion of
7128 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7130 * There's now a minimal placeholder implementation for CL:STEP,
7131 as required by ANSI.
7132 * An obscure bug in the interaction of the normal compiler, the byte
7133 compiler, inlining, and structure predicates has been patched
7134 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7135 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7137 * Missing ordinary arguments in a macro call are now detected even
7138 when the macro lambda list contains &KEY or &REST.
7139 * The debugger no longer complains about encountering the top of the
7140 stack when you type "FRAME 0" to explicitly instruct it to go to
7141 the top of the stack. And it now prints the frame you request even
7142 if it's the current frame (instead of saying "You are here.").
7143 * As specified by ANSI, the system now always prints keywords
7144 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7146 * The default initial SIZE of HASH-TABLEs is now smaller.
7147 * Type information from CLOS class dispatch is now propagated
7148 into DEFMETHOD bodies, so that e.g.
7149 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7151 is now basically equivalent to
7152 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7153 (DECLARE (TYPE SINGLE-FLOAT X))
7155 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7156 operation, without having to do run-time type dispatch.
7157 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7158 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7159 * Since I don't seem to be making big file reorganizations very often
7160 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7161 is overflowing my ability to conveniently back them up), I've finally
7162 checked the system into CVS. (The CVS repository is on my home system,
7163 not at SourceForge -- putting it on SourceForge might come later.)
7164 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7165 high-level GC-NOTIFY-FOO functions send their output. (There's
7166 still very little control of where low-level verbose GC functions
7167 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7168 less than it used to -- the GC-NOTIFY-FOO functions are now under
7169 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7170 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7171 in only one place in the source code, and propagates it automatically
7172 everywhere that it's needed. Thus e.g. when I bump the version from
7173 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7174 * The C source files now include boilerplate legalese and documentation
7175 at the head of each file (just as the Lisp source files already did).
7176 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7177 to his page will be replaced with a link to his new CLiki service.
7179 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7181 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7182 * The build process now looks for GNU make under the default name "gmake",
7183 instead of "make" as it used to. If GNU make is not available as "gmake"
7184 on your system, you can change this default behavior by setting the
7185 GNUMAKE environment variable.
7186 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7187 can build without error under CMU CL.
7189 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7191 * There is now a partial SBCL user manual (with some new text and some
7192 text cribbed from the CMU CL manual).
7193 * The beginnings of a profiler have been added (starting with the
7194 CMU CL profiler and simplifying and cleaning up). Eventually the
7195 main interface should be through the TRACE macro, but for now,
7196 it's still accessed through vaguely CMU-CL-style functions and macros
7197 exported from the package SB-PROFILE.
7198 * Some problems left over from porting CMU CL to the new
7199 cross-compilation bootstrap process have been cleaned up:
7200 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7201 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7202 part when getting rid of the compiler *BACKEND* stuff.)
7203 ** The value of *NULL-TYPE* was screwed up, because it was
7204 being initialized before the type system knew the final
7205 definition of the 'NULL type. This screwed up several key
7206 optimizations in the compiler, causing inefficiency in all sorts
7207 of places. (I found it because I wanted to understand why
7208 GET-INTERNAL-RUN-TIME was consing.)
7209 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7210 PROCLAIM FTYPE information. Unfortunately this broke binary
7211 compatibility again, since now the forms output by DEFGENERIC
7212 to refer to functions which didn't exist in 0.6.3.
7213 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7214 can use the new (as of 0.6.3) transform for SOME into MAP into
7216 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7217 values to (INTEGER 0 1000000), so that the time code will no longer
7218 occasionally get blown up by Linux returning 1000000 microseconds
7219 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7220 its output conform to the ANSI spec. (Alas, this makes its output
7221 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7222 * A full call to MAP NIL with a single sequence argument no longer conses.
7223 * fixes to problems pointed out by Martin Atzmueller:
7224 * The manual page no longer talks about multiprocessing as though
7225 it were currently supported.
7226 * The ILISP support patches have been removed from the distribution,
7227 because as of version 5.10.1, ILISP now supports SBCL without us
7228 having to maintain patches.
7229 * added a modified version of Raymond Toy's recent CMU CL patch for
7230 EQUALP comparison of HASH-TABLE
7232 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7234 * The system still can't cross-compile itself with
7235 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7236 entails), but at least it can compile more of itself that way
7237 than it used to be able to, and various buglets which were uncovered
7238 by trying to cross-compile itself that way have now been fixed.
7239 * This release breaks binary compatibility again. This time
7240 at least I've incremented the FASL file format version to 2, so that the
7241 problem can be detected reliably instead of just causing weird errors.
7242 * various new style warnings:
7243 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7244 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7245 ** using the lexical binding of a variable named in the *FOO* style
7246 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7247 as specified by ANSI.
7248 * *RANDOM-STATE* is no longer automatically initialized from
7249 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7250 default behavior of the system is to repeat its behavior every time
7251 it's run. If you'd like to change this behavior, you can always
7252 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7253 old convention there was no comparably easy way to get the system to
7254 repeat its behavior every time it was run.
7255 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7256 FTYPE declarations has been removed, in favor of their ANSI
7257 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7258 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7259 the types of their sequence arguments can be determined at compile time.
7260 This is done through a new open code expansion for MAP which eliminates
7261 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7262 argument types can be determined at compile time.
7263 * The optimizer now transforms COERCE into an identity operation when it
7264 can prove that the coerced object is already of the correct type. (This
7265 can be a win for machine generated code, including the output of other
7266 optimization transforms, such as the MAP transform above.)
7267 * Credit information has been moved from source file headers into CREDITS.
7268 * Source file headers have been made more standard.
7269 * The CASE macro now compiles without complaining even when it has
7272 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7274 * (Note that the way that the PCL macroexpansions were rewritten
7275 to accommodate the change in DEFGENERIC below breaks binary
7276 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7277 not run under sbcl-0.6.2. Once we get out of alpha releases,
7278 i.e. hit release 1.0.0, we'll probably try to maintain binary
7279 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7280 and sbcl-1.4.4. Until then, however, it might be fairly common
7281 for maintenance releases to break binary compatibility.)
7282 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7284 * The reporting of unhandled signals has been changed to print some
7285 explanatory text as well as the report form. (Previously only
7286 the report form was printed.)
7287 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7288 it defines, so that the compiler no longer issues undefined function
7289 warnings for compiled-but-not-yet-loaded generic functions.
7290 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7291 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7292 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7293 section of the ANSI spec are supported.
7294 * The "" nickname for the "KEYWORD" package has been removed.
7295 The reader still handles symbol tokens which begin with a package marker
7296 as keywords, but it doesn't expose its mechanism for doing so in the
7297 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7298 * The system now issues STYLE-WARNINGs for contradictory TYPE
7299 proclamations. (Warnings for contradictory FTYPE proclamations would
7300 be nice too, but those can't be done usefully unless the type system
7301 is made smarter about FUNCTION types.)
7302 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7303 systematized, so that "*target-*.lisp is supposed to exist only on the
7304 target and imply that there's a related file which exists on the
7305 host, and *host-*.lisp is supposed to exist only on the host and imply
7306 that there's a related file which exists on the target. This involves a
7307 lot of renaming. Hopefully the acute confusion caused by the renaming
7308 will be justified by the reduction in chronic confusion..
7309 ** runtime-type.lisp -> early-target-type.lisp
7310 ** target-type.lisp -> late-target-type.lisp
7311 ** early-host-format.lisp -> early-format.lisp
7312 ** late-host-format.lisp -> late-format.lisp
7313 ** host-error.lisp -> misc-error.lisp
7314 ** early-error.lisp -> early-target-error.lisp
7315 ** late-error.lisp -> late-target-error.lisp
7316 ** host-defboot.lisp -> early-defboot.lisp
7317 ** code/misc.lisp -> code/target-misc.lisp
7318 ** code/host-misc.lisp -> code/misc.lisp
7319 ** code/numbers.lisp -> code/target-numbers.lisp
7320 ** code/early-numbers.lisp -> numbers.lisp
7321 ** early-host-type.lisp -> early-type.lisp
7322 ** late-host-type.lisp -> late-type.lisp
7323 ** host-typep.lisp -> typep.lisp
7324 ** load.lisp -> target-load.lisp
7325 ** host-load.lisp -> load.lisp
7326 ** host-disassem.lisp -> disassem.lisp
7327 ** host-insts.lisp -> insts.lisp
7328 ** byte-comp.lisp -> target-byte-comp.lisp
7329 ** host-byte-comp.lisp -> byte-comp.lisp
7330 ** host-signal.lisp -> signal.lisp
7331 ** host-defstruct.lisp -> defstruct.lisp
7332 ** late-target-type.lisp -> deftypes-for-target.lisp
7333 Furthermore, several other previously target-only files foo.lisp (e.g.
7334 hash-table.lisp and random.lisp) have been split into a target-and-host
7335 foo.lisp file and a target-only target-foo.lisp file, with their key type
7336 definitions in the target-and-host part, so that the cross-compiler will
7337 know more about target types.
7338 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7339 gone away. In their place are various *BACKEND-FOO* variables
7340 corresponding to the slots of the old structure.
7341 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7342 into the target SBCL has been fixed.
7343 * The chill.lisp system for loading cold code into a running SBCL
7345 * Support for the CMU CL "scavenger hook" extension has been removed.
7346 (It was undocumented and unused in the CMU CL sources that SBCL was
7347 derived from, and stale in sbcl-0.6.1.)
7348 * Various errors in the cross-compiler type system were detected
7349 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7350 (enabling various consistency checks). Many of them were fixed,
7351 but some hard problems remain, so the compiler is back to
7352 running without *TYPE-SYSTEM-INITIALIZED* for now.
7353 * As part of the cross-compiler type system cleanup, I implemented
7354 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7355 * I have started adding UNCROSS calls throughout the type system
7356 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7357 on cross-compiler input files will be able to go away, and various
7359 * CONSTANTP now returns true for quoted forms (as explicitly required
7362 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7364 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7365 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7366 (MAKE-LIST -1). In the longer term, it ought to become true
7367 that declarations are assertions even at SAFETY 1. For now, it's not
7368 quite true even at SAFETY 3, but it's at least more nearly true..
7369 (Note that this change seems to increases the size of the system by
7370 O(5%) and to decrease the speed of the compiler by 20% or more.)
7371 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7372 for the problem of printing dozens of lines of distracting information
7373 about low-level system machinery as part of the top stack frame
7374 on entry to the debugger when an undefined function was called.
7375 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7376 is not reset to COMMON-LISP-USER.
7377 * Compilation of stuff related to dyncount.lisp has been made conditional
7378 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7379 smaller. The various dyncount-related symbols have been moved into
7380 a new "SB-DYNCOUNT" package.
7381 * tty-inspect.lisp has been renamed to inspect.lisp.
7382 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7383 feature has gone away. (When we eventually port to other flavors of
7384 libc and/or Unix, we'll try to make the differences between flavors
7385 invisible at the user level.)
7386 * Various other *FEATURES* tags, and/or their associated conditionals,
7387 have been removed if obsolescent, or given better documentation, or
7388 sometimes given more-mnemonic names.
7390 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7392 * tidied up "make.sh" script
7393 * tidied up system directory structure
7394 * better "clean.sh" behavior
7395 * added doc/FOR-CMUCL-DEVELOPERS
7396 * many many small tweaks to output format, e.g. removing possibly-confusing
7397 trailing #\. character in DESCRIBE-INSTANCE
7398 * (EQUALP #\A 'A) no longer signals an error.
7399 * new hashing code, including EQUALP hashing
7400 * tidied up Lisp initialization and toplevel
7401 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7402 * command line argument processing
7403 * added POSIX-GETENV function to deal with Unix-ish environment variables
7404 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7405 terminating SBCL on EOF
7406 * non-verbose GC by default
7407 * There is no more "sbcl" shell script; the sbcl file is now the C
7408 runtime executable (just like CMU CL).
7409 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7411 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7412 symbol and package information as Lisp native symbol and package objects
7413 instead of strings naming symbols and strings naming packages. This way,
7414 whenever packages are renamed (as in warm init), debug information is
7415 transformed along with everything else.
7416 * tweaked the optimization policy declarations which control the building
7417 of SBCL itself. Now, among other things, the system no longer saves
7418 source location debugging information. (This helps two problems at once
7419 by reducing SBCL size and by keeping SBCL from trying to look for its
7420 sources -- which may not exist -- when reporting errors.)
7421 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7422 debugging and testing purposes
7423 * cleaned up printing, making the printer call PRINT-OBJECT for
7424 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7425 methods, giving nearly-ANSI behavior
7426 * converted almost all special variables to use *FOO* naming convention
7427 * deleted PARSE-TIME functionality, since it can be done portably
7428 * moved some files out of cold init into warm init
7429 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7431 * regularized formatting of source files
7432 * added an install.sh script
7433 * fixed ridiculous memory usage of cross-compiler by making
7434 compiler/alloc.lisp not try to do pooling unless it can hook
7435 itself into the GC of the cross-compilation host. Now the system
7436 builds nicely on my old laptop.
7437 * added :SB-ALLOC in target-features.lisp-expr
7438 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7439 was not implemented)
7440 * re-did condition handling and note reporting in the compiler. Notes
7441 are no longer handled by signalling conditions. Style warnings
7442 and warnings are handled more correctly and reported in such a way
7443 that it's easy to find one or the other in your output (so that you
7444 can e.g. figure out which of many problems caused COMPILE-FILE to
7446 * changed the severity of several compiler warnings from full WARNING
7447 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7448 compiler note reporting so that it doesn't use the condition system
7449 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7450 COMPILE-FILE command)
7451 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7452 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7453 no longer supported, since their implementation was deeply intertwingled
7454 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7455 * removed bogus "support" for compiler macros named (SETF FOO), and
7456 removed the compiler macro for SETF INFO (but only after making a fool
7457 of myself on the cmucl-imp mailing list by posting a bogus patch for
7458 DEFINE-COMPILER-MACRO..)
7459 * Compiled files containing forms which have side effects on the Lisp
7460 reader (such as DEFPACKAGE forms) are now handled more correctly.
7461 (Compiler queuing of top level lambdas has been suppressed by setting
7462 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7463 * deleted various currently-unused source files, e.g. gengc.lisp. They
7464 may be added back at some point e.g. when porting to other architectures,
7465 but until they are it's distracting to distribute them and to try to
7467 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7468 there were so many of them they're just distractions, and UNCROSS is
7469 known to be able to handle the current sources
7470 * moved PROFILE functionality into TRACE, so that it will be clear
7471 how the wrapping and unwrapping of functions when you profile them
7472 interacts with the wrapping and unwrapping of functions when you
7473 trace them. (Actually, the functionality isn't there yet, but at least
7474 the interface specification is there. Hopefully, the functionality will
7475 arrive with some future maintenance release.)
7476 * removed host-oops.lisp
7477 * changed signature of QUIT function to allow UNIX-CODE argument
7478 * fixed READ-SEQUENCE bug
7479 * tweaked verbose GC output so that it looks more like the progress
7480 output that ANSI specifies for functions like LOAD
7481 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7482 * added <http://sbcl.sourceforge.com> to the banner information printed by