1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.36:
3 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
4 stack frame thrown from.
5 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
6 compiler optimization qualities inside dynamic extent of its body.
7 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
8 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
10 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
11 constraint propgation, allowing better compilation eg. when used to
12 access structures with WITH-SLOTS. (lp#520366)
13 * optimization: the compiler is now more aware of the type of the underlying
14 storage vector for multidimensional simple arrays resulting in better code
15 for accessing such arrays.
16 * optimization: passing NIL as the environment argument to TYPEP no longer
17 inhibits optimizing it. (lp#309788)
18 * optimization: more efficient register usage when handling single-float
19 arguments on x86-64. (thanks to Lutz Euler)
20 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
21 pre-allocated temporary vectors. (lp#496249)
22 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
23 in :INITIAL-CONTENTS. (lp#523612)
24 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
25 functions. (lp#524707)
26 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
27 WITH-SLOTS usages during compilation.
28 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
29 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
30 all x86oid platforms with :UD2-BREAKPOINTS target feature.
31 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
32 instruction (tested on x86oid linux with ud2-breakpoints).
33 * bug fix: slam.sh now works on win32.
34 * bug fix: better differences of numeric types. (lp#309124)
35 * bug fix: arrays declared intersection and union types can have their
36 upgraded element type derived. (lp#316078)
37 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
38 threads started during profiling. (lp#472499)
39 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
41 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
42 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
43 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
44 values instead of signaling an error. (lp#309093)
45 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
47 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
48 declarations (lp#497321)
49 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
50 and failed to detect circular lists (lp#452008)
51 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
53 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
54 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
55 due to it, so that handlers can run.
56 * bug fix: reparsing undefined types if they have become defined since
58 * bug fix: missing &REST type in a proclamation for a function with both
59 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
60 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
61 expanded calls (lp#542174)
63 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
64 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
65 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
66 but work on type specifiers.
67 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
68 to name a type specifier.
69 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
70 specifier is valid where "valid" basically means "would be accepted as
71 second argument of TYPEP".
72 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
73 returns the function's declared, or derived FTYPE.
74 * new feature: SB-POSIX now supports accessing the d_ino member of
75 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
76 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
77 provide for seeding a RANDOM-STATE object with user-provided data or
78 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
79 attempt to initialize the returned state from the operating system's
80 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
81 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
82 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
83 * bug fix: Fix grammar and style issues for the docstrings of
84 printer-related variables and functions. (Thanks to mon_key; launchpad
86 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
88 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
89 in a row even though a handler defered the deadline long into the
91 * bug fix: A deadline handler was run without interrupts enabled for a
92 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
93 in infinitely spinning, non-killable threads.
94 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
95 before reaching the erring stack frame.
96 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
97 real power. (launchpad bug lp#525949)
98 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
99 GENCGC platforms. (launchpad bug lp#529014)
100 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
101 (launchpad bug lp#525916)
102 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
103 (Thanks to Robert Goldman)
105 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
106 * optimization: ROUND with a single single-float or double-float argument
107 is properly inlined when possible.
108 * optimization: Slightly better code is generated for integer<->float
109 conversions and for single-float<->double-float conversions on x86-64.
110 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
111 code for 32-bit and 64-bit rotations on x86-64.
112 * bug fix: The install script changes the ownership of directories as well
113 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
114 launchpad bug lp#508485)
115 * bug fix: TRUNCATE with a single single-float or double-float argument is
116 properly inlined when possible. (launchpad bug lp#489388)
117 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
118 no longer causes a compiler error on x86 and ppc.
119 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
120 always relative to *READTABLE* rather than the passed argument.
122 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
123 * minor incompatible change: threading support is now enabled by default
125 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
127 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
128 are now caught and reported just like errors during macroexpansion.
129 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
130 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
131 * enhancement: ASDF systems can now depends on SB-QUEUE.
132 * fixes and improvements related to Unicode and external formats:
133 ** bug fix: error handling and restart usage in the ucs-2 external format
135 ** there is now an implementation of the ucs-4 external format.
136 ** the utf-16 and utf-32 external formats are supported.
137 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
138 in the environment. setenv() and unsetenv() are also provided. (reported by
139 Fare Rideau; launchpad bug lp#460455)
140 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
141 loading. This ensures sensible errors for .FASL files from other
142 implementations on case-insensitive filesystems. (reported by Willem
143 Broekema; launchpad bug lp#489417)
144 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
145 Willem Broekema; launchpad bug lp#489698).
146 * bug fix: some minor code rearrangements to reenable warning-free building
147 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
148 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
150 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
153 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
154 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
155 * improvement: support O_LARGEFILE access to files larger than 2GB on
156 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
157 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
158 definitions for methods specializing on the passed class itself.
159 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
160 definitions for methods specializing on the passed class itself, or on
162 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
163 about itself during the build (e.g. for M-? in Slime), if this flag is
164 enabled in customize-target-features.lisp. This will increase the core
165 size by about 5-6mb, though, so it's mostly interesting to SBCL
167 * new feature: various GENCGC tuning parameters have been experimentally
168 documented and exported from SB-EXT. See documentation for details.
169 * fixes and improvements related to Unicode and external formats:
170 ** the Unicode character database has been upgraded to the
171 Unicode 5.2 standard, giving names and properties to a number of new
172 characters, and providing a few extra characters with case
174 ** improvement: restarts for providing replacement input/output on coding
175 errors for fd-stream external formats.
176 ** improvement: where :<encoding> is a keyword corresponding to an
177 external format the system supports, it is now possible to specify
178 (:<encoding> :replacement <character>) as an external format which will
179 automatically substitute <character> on encoding or decoding errors for
180 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
182 ** improvement: the file streams underlying the standard streams (such as
183 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
184 which uses the replacement mechanism to handle encoding errors,
185 preventing various infinite error chains and unrecoverable I/O
187 ** minor incompatible change: the utf-8 external format now correctly
188 refuses to encode Lisp characters in the surrogate range (char-codes
189 between #xd800 and #xdfff).
190 ** fix a typo preventing conversion of strings into octet vectors
191 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
193 ** fix a bug in the octet multibyte handling of decoding errors and the
194 USE-VALUE restart. (launchpad bug lp#314939)
195 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
196 restart on fd-stream decoding errors.
197 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
198 error is near the end of file.
199 ** fix a double-error case in unibyte octet conversions, when the first
200 use of USE-VALUE is ignored.
201 ** fix bugs in handling of undefined code points in unibyte encodings.
202 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
203 streams after an UNREAD-CHAR.
204 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
205 object is allocated in a boxed region of dynamic space.
206 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
207 fork with multiple Lisp threads running is made, instead of going
208 ahead with unpredictable consequences. (reported by Leslie Polzer)
209 * bug fix: uses of slot accessors on specialized method parameters within
210 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
211 error while finalizing the class. This fix may cause classes with slot
212 accessors to be finalized later than previously. (reported by Lars Rune
213 Nøstdal; launchpad bug lp#473699)
214 * bug fix: restore buildability on the MIPS platform. (regression from
215 1.0.30.38, reported by Samium Gromoff)
216 * bug fix: inspecting closures is less likely to fail with a type error.
217 * bug fix: no timer starvation when setting the system clock back.
218 (launchpad bug lp#460283)
219 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
220 standard pprint dispatch table as specified by CLHS.
221 * bug fix: give CLISP a hint about a type declaration to enable it to build
222 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
224 * bug fix: correctly dump literal objects in defaulting forms of arglists.
225 (reported by Attila Lendvai; launchpad bug lp#310132)
226 * bug fix: distinguish in type specifiers between arrays that might be
227 complex and arrays that are definitely complex. (launchpad bug lp#309129)
228 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
229 type. (reported by Levente Mészáros; launchpad bug lp#485972)
230 * bug fix: setting the value of a symbol-macro within a method in the
231 presence of type declarations works properly again. (reported by Iban
232 Hatchondo; launchpad bug lp#485019)
234 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
235 * optimization: faster FIND and POSITION on strings of unknown element type
236 in high SPEED policies. (thanks to Karol Swietlicki)
237 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
239 * improvement: better error signalling for bogus parameter specializer names
240 in DEFMETHOD forms (reported by Pluijzer)
241 * bug fix: DELETE-FILE once again works on logical pathnames (regression
243 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
245 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
246 removes previous default initargs (reported by Lars Rune Nøstdal and
248 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
249 lambda-lists. (reported by Peter Seibel)
250 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
251 correctly when starting from an executable core without saved runtime
252 options (reported by Faré Rideau, thanks to Zach Beane)
253 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
254 an optimization note instead. (reported by Martin Cracauer)
255 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
256 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
257 new process group if it doesn't need to share stdin with the sbcl
258 process. (thanks to Leslie Polzer)
259 * bug fix: SATISFIES could be misoptimized to refer to a local function.
260 (reported by Stanislaw Halik)
262 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
263 * improvement: stack allocation is should now be possible in all nested
264 inlining cases: failure to stack allocate when equivalent code is manually
265 open coded is now considered a bug.
266 * improvements related to Unicode:
267 ** the Unicode character database has been upgraded to the
268 Unicode 5.1 standard, giving names and properties to a number of new
269 characters, and providing a few extra characters with case
271 ** the system now recognizes and produces names for Unicode Hangul
273 ** the EBCDIC-US external-format is now supported for octet operations
274 (as well as for stream operations).
275 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
276 be used to output toplevel compile-time effects into a separate .CFASL
278 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
279 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
281 * optimization: TRUNCATE on known single- and double-floats is upto 25%
283 * optimization: division of floating point numbers by constants uses
284 multiplication by reciprocal when an exact reciprocal exists.
285 * optimization: multiplication of single- and double-floats floats by
286 constant two has been optimized.
287 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
288 sufficient type information is available. (thanks to Leslie Polzer)
289 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
290 known structure objects are as efficient as defstruct generated accessors.
291 * optimization: unused vector creation can now be optimized away.
292 * improvement: ASDF systems can now depends on SB-INTROSPECT.
293 * improvement: a STYLE-WARNING is signalled when a generic function
294 clobbers an earlier FTYPE proclamation.
295 * improvement: the compiler is able to track the effective type of
296 generic function across method addition and removal even in the
297 absence of an explicit DEFGENERIC.
298 * improvement: DESCRIBE now reports on symbols naming undefined
299 but assumed or declared function as well.
300 * improvement: recompilation of systems using SB-GROVEL now works
301 (thanks to Leslie Polzer)
302 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
303 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
305 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
306 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
307 well as user defined declaration names.
308 ** VARIABLE-INFORMATION is now aware of alien variables.
309 * improvement: improved address space layout on OpenBSD (thanks to Josh
311 * improvement: pretty-printing of various Lisp forms has been improved
312 (thanks to Tobias Rittweiler)
313 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
314 unused were deleted in safe code. (reported by John Fremlin)
315 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
317 * bug fix: some out-of-line array predicates were missing (reported by
319 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
321 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
322 (thanks to Larry D'Anna)
323 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
324 as well. (reported by Josh Elsasser)
325 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
326 leading to possible attempts to delete the same file twice. See docstring
327 on DELETE-FILE for details. (reported by John Fremlin)
328 * bug fix: DELETE-FILE once again deletes the file named by the pathname
329 designator argument, rather than its truename. (reported by Luis
331 * bug fix: the low-level debugger had 32-bit assumptions and was missing
332 information about some array types. (thanks to Luis Oliveira)
333 * bug fix: moderately complex combinations of inline expansions could
334 be miscompiled if the result was declared to be dynamic extent.
335 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
336 form (+ <variable> <integer>) were miscompiled under certain
338 * bug fix: in some cases no compiler note about failure to stack allocate
339 was emitted, even if the objects were in fact heap allocated.
340 * bug fix: minor violation of "otherwise inaccessible" rule for stack
341 allocation could cause objects users might reasonably expect to
342 be heap allocated to be stack allocated.
343 * bug fix: DESCRIBE signalled an error for generic functions under
344 certain circumstances. (thanks to Leslie Polzer)
345 * bug fix: Fixed spelling of an error message.
347 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
348 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
349 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
350 of SB-THREAD:THREAD-ERROR-THREAD.
351 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
352 * new feature: docstrings for local and anonymous functions are no longer
353 discarded. (thanks to Leslie Polzer)
354 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
355 values in other threads.
356 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
357 about object allocation.
358 * optimization: division of a real float by a complex float is implemented
359 with a specialised code sequence.
360 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
361 keywords is an order of magnitude faster.
362 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
363 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
364 methods, and similarly for non-standard metaclass classes as long as there
365 are no methods additional on MAKE-INSTANCE.
366 * optimization: more efficient type-checks for FIXNUMs when the value
367 is known to be a signed word on x86 and x86-64.
368 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
369 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
371 * optimization: compiler is smarter about delegating argument type checks to
373 * optimization: several character functions are now compiled somewhat more
374 efficiently. (reported by Lynn Quam)
375 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
376 * improvement: less unsafe constant folding in floating point arithmetic,
377 especially for mixed complex/real -float operations.
378 * optimization: constant double and single floats are stored in native
379 unboxed format on x86[-64].
380 * optimization: smarter code for arithmetic operations with constant floats,
381 complex floats, or integers on x86[-64].
382 * optimization: smarter code for conjugate/multiplication of float complexes
383 and abs/negate of floats on x86-64.
384 * optimization: more efficient complex float and real float operations on
386 * improvement: complex float division is slightly more stable.
387 * improvement: DESCRIBE output has been reworked to be easier to read and
388 contains more pertinent information.
389 * improvement: failure to provide requested stack allocation compiler notes
390 provided in all cases (requested stack allocation not happening without a
391 note being issued is now considered a bug.)
392 * bug fix: SB-POSIX exports the documented types and functions
393 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
394 types. (reported by "abhi")
395 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
396 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
397 (thanks to Paul Khuong)
398 * bug fix: looping around HANDLER-CASE could silently consume stack space
399 on each iteration. (reported by "foobar")
400 * bug fix: better error signalling when calls to functions seeking elements
401 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
402 (reported by Tobias Rittweiler)
403 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
404 directory components now works as it used to. (various prolems reported by
405 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
406 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
407 (reported by Elliot Slaughter, thanks to Stas Boukarev)
408 * bug fix: bogus undefined variable warnings from fopcompiled references to
409 global variables. (thanks to Lars Rune Nøstdal)
410 * bug fix: foreign function names should now appear in backtraces on
411 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
412 * bug fix: SETF compiler macro documentation strings are not discarded
414 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
415 (thanks to Alex Plotnick)
416 * bug fix: SLEEP accepts large integer arguments, truncating them to
417 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
418 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
419 * bug fix: compiler notes for expensive slot type checks could be emitted
420 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
422 changes in sbcl-1.0.29 relative to 1.0.28:
423 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
424 https://bugs.launchpad.net/sbcl
425 Bugs can be reported directly there, or by sending email to
426 sbcl-bugs@lists.sourceforge.net
427 (no subscription required.)
428 * minor incompatible change: under weak type checking policy integer
429 types are weakened less aggressively.
430 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
431 allowed to return, which causes SBCL to quit with exit status 0. Previously
432 if the function returned with a small integer return value, that value
433 was accidentally reused as the exit status.
434 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
435 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
436 :HASH-FUNCTION argument. Refer to user manual for details.
437 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
439 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
440 microseconds since the Unix epoch on all platforms.
441 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
442 allows the compiler to safely elide boundedness checks for special
444 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
445 the symbol, prohibits both lexical and dynamic binding. This is mainly an
446 efficiency measure for threaded platforms, but also valueable in
448 * new feature: UNC pathnames are now understood by the system on Windows.
449 * optimization: the compiler uses a specialized version of FILL when the
450 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
452 * optimization: accesses to potentially non-simple arrays where element type
453 is known are 50% faster.
454 * optimization: compiler now generates faster array typechecking code.
455 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
457 * optimization: multidimensional array accesses in the absence of type
458 information regarding array rank are approximately 10% faster due to
459 open coding of ARRAY-RANK.
460 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
461 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
463 * optimization: result of call to VECTOR can now be stack allocated.
464 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
465 as long as the resulting array is one-dimensional and has a known
466 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
467 length of the list matches the known length of the vector does not
468 allocate the list as an intermediate step. Ditto for VECTOR and simple
470 * optimization: MAKE-ARRAY can now stack allocate in the presence of
471 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
472 known element type, and is known to be simple and one dimensional.
473 * improvement: SBCL now emits a compiler note where stack allocation was
474 requested but could not be provided (not in all cases, unfortunately)
475 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
476 * improvement: pretty-printing loop has been implemented properly. (thanks
477 to Tobias Rittweiler)
478 * documentation: CLOS slot typechecing policy has been documented.
479 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
480 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
481 pointer, leading to memory faults. (thanks to Bart Botta)
482 * bug fix: better floating point exception handling on x86/OpenBSD.
483 (thanks to Josh Elsasser)
484 * bug fix: exit status from QUIT when called under --script was lost
485 (reported by Hubert Kauker)
486 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
487 same implementation of FILL to initialize the array, even if a more
488 efficient one was available (reported by Stas Boukarev, thanks to
490 * bug fix: potential miscompilation of array stack allocation on x86 and
491 x86-64. (reported by Time Tossavainen)
492 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
493 result in their subforms being treated as top level forms. (reported by
495 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
496 than a machine register could leave garbage in the high bits of the
497 result register (bug 316325).
498 * bug fix: disable address space randomization Linux/x86-64 as well,
499 not just x86-64. (reported by Ken Olum)
500 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
501 generate incorrect code.
502 * bug fix: #201; type inference for CONS and ARRAY types could derive
503 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
504 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
505 could not be assigned to or bound with PROGV. (reported by Lorenz
507 * bug fix: the value of CL:- in the inspector was the previous expression
508 evaluated rather than the expression being evaluated.
509 * bug fix: constants can no longer be locally declared special.
510 * bug fix: signals delivered to threads started from foreign land (read:
511 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
512 thread by blocking all signals and resignalling.
513 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
514 from :INITFORM, if any.
516 changes in sbcl-1.0.28 relative to 1.0.27:
517 * a number of bugs in cross-compilation have been fixed, with the ultimate
518 result that building under (at least) clisp should be much more reliable.
519 * minor incompatible changes: echo-streams now propagate unread-char to the
520 underlying input stream, and no longer permit unreading more than one
522 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
523 frames, allowing for instance more reliable backtraces.
524 * improvement: the debugger REPL can now reference lexical variables
525 by name directly for code compiled with (DEBUG 3).
526 * improvement: errors from malformed declarations now have better source
527 paths associated with them. (thanks to Tobias Rittweiler)
528 * optimization: faster local calls on x86/x86-64
529 * bug fix: some error messages for out-of-bound array indexes confused the
530 index and the bound. (thanks to Stas Boukarev)
531 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
533 * bug fix: running regressions tests in shells without OSTYPE set now works.
534 (reported by Harald Hanche-Olsen)
535 * bug fix: more robust static space exhaustion signalling from
536 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
537 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
538 docstring away instead of storing it under names such as (LAMBDA (X)).
539 (reported by Leslie Polzer)
540 * bug fix: timers could go off in the wrong order, be delayed indefinitely
541 (thanks to Ole Arndt for the patch)
542 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
543 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
544 potentially-invalid effective methods in its cache.
545 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
546 instances as well (thanks to Paul Khuong)
547 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
548 SB-POSIX:WAITPID and their C equivalents.
549 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
551 changes in sbcl-1.0.27 relative to 1.0.26:
552 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
553 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
554 * improvement: the system either recovers from stack exhaustion or dies
555 properly as opposed to leaving the user uncertain of whether the handler
556 trampled on some random memory next to the stack or having to rely on
557 --lose-on-corruption (which is still a good idea to use in production
558 because stack exhaustion can happen in signal handlers which will likely
560 * bug fix: fix gc related interrupt handling bug on ppc (regression from
561 1.0.25.37, reported by Harald Hanche-Olsen)
562 * bug fix: work around signal delivery bug in darwin (regression from
563 1.0.25.44, reported by Sidney Markowitz)
564 * bug fix: fix ERROR leaking memory (reported by David Thompson)
566 changes in sbcl-1.0.26 relative to 1.0.25:
567 * incompatible change: an interruption (be it a function passed to
568 INTERRUPT-THREAD or a timer function) runs in an environment where
569 interrupts can be enabled. The interruption can use
570 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
571 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
572 potentially running out of stack. Keep in mind that in the absence
573 of WITHOUT-INTERRUPTS some potentially blocking operation such as
574 acquiring a lock can enable interrupts.
575 * incompatible change: GC-OFF and GC-ON are removed, as they were
576 always unsafe. Use WITHOUT-GCING instead.
577 * new feature: runtime option --disable-ldb
578 * new feature: runtime option --lose-on-corruption to die at the
579 slightest hint of possibly non-recoverable errors: running out of
580 memory, stack, alien stack, binding stack, encountering a memory
581 fault, etc. In the absence of --lose-on-corruption a warning is
583 * enhancement: detect binding stack exhaustion
584 * enhancement: detect alien stack exhaustion on x86/x86-64
585 * improvement: generally more stable and reliable interrupt handling
586 * improvement: there is a per thread interruption queue,
587 interruptions are executed in order of arrival
588 * improvement: a repeating timer reschedules itself when the it has
589 finished, but expiration times are spaced equally. If an
590 expiration time is in the past it will trigger after a short grace
591 period that may give a chance to other things to run.
592 * optimization: slightly faster gc on multithreaded builds
593 * optimization: faster WITHOUT-GCING
594 * bug fix: when JOIN-THREAD signals an error, do it when not holding
595 important locks so that the debugger/handler doesn't produce
596 recursive errors or deadlock.
597 * bug fix: real-time signals are not used anymore, so no more
598 hanging when the system wide real-time signal queue gets full.
599 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
601 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
602 * bug fix: fix random memory faults related to interrupts on alpha
603 * bug fix: fix random memory faults related to interrupts on sparc
604 * bug fix: fix deadlocks related to starting threads
605 * bug fix: fix deadlines on locks on futex platforms
606 * bug fix: restore errno in signal handlers
607 * bug fix: fix deadlocks related to hash tables
608 * bug fix: fix deadlocks in pcl
610 changes in sbcl-1.0.25 relative to 1.0.24:
611 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
612 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
613 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
614 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
615 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
616 better name and does not return values so stale on multiprocessor systems.
617 Also, HOLDING-MUTEX-P was added for about the only sane usage of
619 * improvement: unithread builds keep track of MUTEX-VALUE.
620 * improvement: reading from a TWO-WAY-STREAM does not touch the output
621 stream anymore making it thread safe to have a concurrent reader and
622 a writer, for instance, in a pipe.
623 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
624 arguments, making compiler-macros for SETF-functions able to inspect
625 their constant arguments.
626 * improvement: COMPILE-FILE reports times with millisecond accuracy
627 (thanks to Luis Oliveira)
628 * optimization: CHAR-CODE type derivation has been improved, making
629 TYPEP elimination on subtypes of CHARACTER work better. (reported
630 by Tobias Rittweiler, patch by Paul Khuong)
631 * bug fix: setting alien structure fields of type struct by value now
632 computes the right offset for the memory copy.
633 * bug fix: compilation problem involving inlined calls to aliens with
634 result type VOID. (reported by Ken Olum)
635 * bug fix: #235a; sequential inline expasion in different policies no
636 longer reuses the functional from the previous expansion site.
637 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
638 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
639 * bug fix: named ENUMs in multiply-referenced alien record types no longer
640 cause an implied type redefinition. Regression from 1.0.21.29.
641 * bug fix: sign-extension of small signed return values now works with C
642 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
643 * improvements to the Windows port:
644 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
645 Westfold, thanks to Rudi Schlatte)
647 changes in sbcl-1.0.24 relative to 1.0.23:
648 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
649 vector of a multidimensional SIMPLE-ARRAY.
650 * new feature: the system now signals a continuable error if standard
651 readtable modification is attempted. (thanks to Tobias Rittweiler)
652 * new feature: DIRECTORY has been extended with a non-standard keyword
653 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
654 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
655 has been robustified and documented better. (thanks to Robert Goldman)
656 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
657 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
658 * tradeoff: constant FORMAT control strings are now compiled unless
659 SPACE > SPEED (previously only when SPEED > SPACE.)
660 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
662 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
664 * bug fix: lexical type declarations are now correctly reported by
665 SB-CLTL2. (reported by Larry D'Anna)
666 * bug fix: STRING-TO-OCTETS did not handle :START properly when
667 using UTF-8 as external format. (thanks to Luis Oliveira)
668 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
669 are signalled correctly. (thanks to Stas Boukarev)
670 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
671 designator. (thanks to Tobias Rittweiler)
672 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
673 designator, and returns T instead of the function. (thanks to
675 * bug fix: direct superclasses of STANDARD-CLASS and
676 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
677 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
678 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
679 when no class with the named slot yet exists no longer causes a
680 compile-time style-warning.
681 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
682 in safe code. (reported by Didier Verna)
683 * bug fix: #430; nested structure constructors can stack allocate.
684 * bug fix: on some 64-bit platforms dynamic space size was truncated
685 to #xffff0000 bytes. (reported by Benjamin Lambert)
686 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
687 REPL unusable. (reported by Daniel Herring)
688 * bug fix: return values of READ-SEQUENCE did not take :START into
689 account on file streams, regressions since 1.0.12.22. (reported by
690 Thomas Russ, patch by Paul Khuong)
691 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
692 method specializer used to confuse permuation vector optimization.
693 * bug fix: system inserted bogus implicit type declarations for local
694 special variables in DEFMETHOD bodies.
695 * bug fix: #354; duplicated frames in backtraces due to
696 non-tail-call-optimized XEPs to functions with return type NIL
698 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
699 initializes structure object slots according to DEFSTRUCT initforms,
700 and DEFSTRUCT forms :INCLUDEind structure classes defined using
701 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
702 (reported by Bruno Haible and Stephen Wilson)
703 * bug fix: #395; fill-pointer output streams used now support
704 element-type BASE-CHAR as well.
705 * bug fix: compiler error when attempting to derive return value of
706 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
708 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
710 * bug fix: Mac OS X binaries should now be portable between Leopard
713 changes in sbcl-1.0.23 relative to 1.0.22:
714 * enhancement: when disassembling method functions, disassembly
715 for the associated fast function is also produced.
716 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
718 * optimization: printing with *PRINT-PRETTY* true is now more
719 efficient as long as the object being printed doesn't require
720 special handling by the pretty printer.
721 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
722 now interact correctly with type declarations.
723 * partial bug fix: PCL detects infinite recursion during wrapper
724 validation. (thanks to Attila Lendvai)
725 * bug fix: #426; nested function calls are inlined properly.
726 Previously if FOO was an inline function, in calls of the form
727 (FOO (FOO ...)) the outer call was not inlined.
728 * bug fix: long long arguments passed in registers to alien
729 functions on PowerPC Linux and NetBSD are now handled correctly
730 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
732 changes in sbcl-1.0.22 relative to 1.0.21:
733 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
734 for the shared object in the current directory, but passes the native
735 namestring of the designated pathname to the operation system's shared
736 object loading function as-it.
737 * minor incompatible change: --disable-debugger toplevel option now takes
738 effect before processing of initialization files and --eval or --load
740 * new feature: new commandline argument: --script, which supports
741 shebang lines. See documentation for details. (based on work by
743 * new feature: SAVE-LISP-AND-DIE can save current values of
744 --dynamic-space-size and --control-stack-size in the executable core,
745 causing it to skip normal runtime option processing. See documentation
746 for details. (thanks to Zach Beane)
747 * enhancement: inoccous calls to EVAL or generic functions dispatching
748 on subclasses of eg. STREAM no longer cause compiler notes to appear.
749 * enhancement: the system no longer resignals errors from --load and
750 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
751 associated with the original error to be lost. (thanks to Ariel
753 * enhancement: :DONT-SAVE keyword argument has been added to
754 LOAD-SHARED-OBJECT for controlling interaction with
755 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
756 the effects of an earlier LOAD-SHARED-OBJECT call.
757 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
758 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
759 provided. (reported by Cedric St-Jean)
760 * bug fix: circularity handling in the reader did not treat raw
761 structure slots correctly. (reported by Cedric St-Jean)
762 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
763 file descriptors when there were none.
764 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
765 was broken. (reporteed by Willem Broekema)
766 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
767 pathnames without a directory.
768 * bug fix: COMPILE-FILE did not warn about undefined variable
769 references at toplevel, and LOAD of the resulting fasl did
771 * bug fix: functions with non-required arguments used to end up with
772 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
773 * bug fix: redefining a function with non-required arguments didn't
774 update the system's knowledge about its call signature properly.
775 * bug fix: fixed #431; incompatible alien record type redefinitions
776 are detected and handled. (reported by Neil Haven)
777 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
778 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
780 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
781 after alien stack frames.
782 * bug fix: strings passed to mk{s,d}temp lacked null termination
784 changes in sbcl-1.0.21 relative to 1.0.20:
785 * new feature: the compiler is able to track the effective type of a
786 generic function across method addition and removal.
787 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
788 appropriately typed structure slots without locking.
789 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
790 information like those gathered by TIME using a programming-friendly
792 * new feature: TIME reports time taken even if the form performs a
793 non-local transfer of control.
794 * enhancement: reduced conservativism on GENCGC platforms: on
795 average 45% less pages pinned (measured from SBCL self build).
796 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
797 mutate constant symbols or violate declaimed type of the symbol.
798 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
799 sleeping on the semaphore in heavily contested semaphores.
800 * bug fix: semaphores and condition variables were not interrupt
802 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
803 owned by other threads anymore.
804 * bug fix: FIND on lists called KEY outside the specified
805 subsequence. (reported by budden)
806 * bug fix: LOG doesn't use single-float intermediate results when
807 given mixed integer and double-float arguments, leading to better
808 precision. (reported by Bob Felts)
809 * bug fix: LOG with base zero returned values of inconsistent type.
811 changes in sbcl-1.0.20 relative to 1.0.19:
812 * minor incompatible change: OPTIMIZE qualities
813 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
814 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
815 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
816 * documentation: some slot access efficiency guidelines have been
817 added to the user manual.
818 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
819 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
820 as ASSOC and MEMEBER.
821 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
822 to more efficient EQ-comparison versions more often.
823 * optimization: enhanced derivation of DOLIST iteration variable type
825 * optimization: constant folding of simple (LIST ...) forms as DOLIST
827 * optimization: runtime lookup of function definitions can be
828 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
829 * optimization: compiler is able to derive the return type of
830 (AREF (THE STRING X) Y) as being CHARACTER.
831 * optimization: CLRHASH on empty hash-tables no longer does pointless
832 work. (thanks to Alec Berryman)
833 * optimization: REPLACE deftransforms don't punt when :START1 or
835 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
836 no longer emits a code deletion note. (reported by Andrew
838 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
839 functions with an odd number of &OPTIONAL arguments, a &REST
840 argument, and one or more &KEY arguments at the call site.
841 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
842 arguments appeared at call sites as well.
843 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
844 READ-LINE &co can no longer read from them afterwards. (reported
846 * bug fix: fixed #427: unused local aliens no longer cause compiler
847 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
849 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
850 alien-stack leakage. (reported by Andy Hefner)
851 * bug fix: PROGV signals an error when an attempt to violate declared
852 type of a variable or bind a constant is made.
853 * bug fix: SET signals an error when an attempt to violate declared
854 type of a variable is made.
855 * bug fix: restart computation during the execution of a restart
856 test function no longer causes infinite recursion. (reported by
858 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
859 signals an error. (thanks to Pierre Mai)
860 * bug fix: EXPORT left symbol unexported in conflict situations.
861 (thanks to Michael Weber)
862 * bug fix: correctly handle name conflicts involving CL:NIL.
863 (thanks to Michael Weber)
864 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
865 conflicts arising from USEing package with conflicting symbols
866 correctly. (thanks to Michael Weber)
868 changes in sbcl-1.0.19 relative to 1.0.18:
869 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
870 warnings that go otherwise unhandled will be muffled if they are
871 of the type that's the value of this variable.
872 * optimization: stack allocation is slightly more efficient on x86
874 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
875 where a raw slot always is initialized using the initform whose
876 type is not know sufficiently well a compile-time are now compiled
877 correctly. (reported by John Morrison)
878 * bug fix: compiler no longer makes erronous assumptions in the
879 presence of non-foldable SATISFIES types.
880 * bug fix: stack analysis missed cleanups of dynamic-extent
881 arguments in non-let-converted calls to local functions.
882 * improvements to the Windows port:
883 ** adjusted address spaces for building on both Win32 and
884 Win64. (thanks for John Connors)
885 * fixed some bugs revealed by Paul Dietz' test suite:
886 ** interval arithmetic during type derivation used inexact integer
887 to single-float coercions.
888 ** arithmetic operations involving large integers and single
889 floats give the same results in compiled and interpreted code.
890 ** deriving the result type of COERCE no longer signals an error
891 if the derived type of the second argument is a MEMBER type
892 containing invalid type specifiers.
893 ** ADJOIN with constant NIL as second argument works correctly.
894 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
896 changes in sbcl-1.0.18 relative to 1.0.17:
897 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
898 profiles only the current thread.
899 * minor incompatible change: changes to SYMBOL-VALUE of constants
900 defined with DEFCONSTANT now signal an error.
901 * enhancement: SB-SPROF now has support for wallclock profiling,
902 and is also able to profile specific threads. REPORT output
903 has also additional sorting options.
904 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
906 * optimization: structure allocation has been improved
907 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
908 ** out of line constructors are ~10% faster.
909 ** inline constructors are ~15% faster.
910 ** inline constructors are capable of dynamic extent allocation
911 (generally on x86 and x86-64, in some cases on other platforms
913 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
915 * optimization: file compiler is now able to coalesce non-circular
916 lists, non-base strings, and bit-vectors. Additionally, constants
917 are never referenced through SYMBOL-VALUE at runtime.
918 * optimization: code defining methods on PRINT-OBJECT (and other
919 generic functions in the COMMON-LISP package) now loads faster.
920 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
922 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
923 fasl is now deleted. (reported by Attila Lendvai)
924 * bug fix: READ-LINE always returned NIL for the last line in files.
925 (reported by Yoshinori Tahara)
926 * bug fix: more accurate disassembly annotations of foreign function
927 calls. (thanks to Andy Hefner)
928 * bug fix: trimming non-simple strings and non-string string
929 designators when the there is nothing to trim works properly.
930 (thanks to James Knight)
931 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
932 (thanks to Travis Cross)
933 * fixed some bugs revealed by Paul Dietz' test suite:
934 ** NIL is a valid function name (regression at 1.0.13.38)
935 ** FILL on lists was missing its return value (regression at 1.0.12.27)
936 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
937 fill pointers properly (regression at 1.0.12.23)
938 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
939 displacement indices properly (regression at 1.0.12.23)
941 changes in sbcl-1.0.17 relative to 1.0.16:
942 * temporary regression: user code can no longer allocate closure
943 variable storage on stack, due to bug 419 without explicitly
944 requesting it. Please consult sbcl-devel for advice if you need to
945 use this feature in the meanwhile.
946 * new feature: runtime argument --control-stack-size can be used to
947 adjust thread default control stack size.
948 * enhancement: improved TIME output
949 ** all times are reported using the measured accuracy (milliseconds
950 for real and GC times, microseconds for everything else.)
951 ** processor cycle counts on x86 and x86-64.
952 ** interpreted forms are counted for both evaluator modes.
953 ** number of lambdas converted by the compiler is reported.
954 ** CPU percentage report (computed from real and total run time.)
955 ** more comprehensive run time reporting, using a condenced format
956 ** interperted form, lambda, and page fault counts are omitted
958 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
960 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
961 * optimization: two argument forms of LAST are upto ~10% faster
962 in normal SPEED policies.
963 * optimization: NCONC no longer needs to heap cons its &REST list
964 in normal SPEED policies.
965 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
967 * bug fix: UNION and NUNION work with :TEST-NOT once more,
968 regression since 1.0.9.1. (thanks to Eric Marsden)
969 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
970 since 1.0.15.36. (thanks to Paul Khuong)
971 * bug fix: LAST when always returned the whole list when given a bignum
972 as the second argument.
973 * bug fix: dynamic extent allocation of nested lists and vectors
974 could leak to otherwise accessible parts.
975 * bug fix: invalid optimization of heap-allocated alien variable
977 * bug fix: fasl header checking is less vulnerable to different
978 platform word lengths.
979 * bug fix: more correct assembler syntax for GNU binutils
980 2.18.50.0.4 support. (thanks to Marijn Schouten)
981 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
983 * bug fix: the fopcompiler can handle LOCALLY forms (with no
984 declarations) successfully. (reported by Attila Lendvai)
986 changes in sbcl-1.0.16 relative to 1.0.15:
987 * minor incompatible change: revert the changes to sb-posix's error
988 signaling added in 1.0.14.
989 * minor incompatible change: change PROBE-FILE back to returning
990 NIL whenever we can't get a truename, as was the case before 1.0.14.
991 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
992 inherits from ERROR instead of just CONDITION.
993 * new feature: SB-INTROSPECT can provide source locations for instances
994 as well. (thanks to Tobias Rittweiler)
995 * optimization: binding special variables now generates smaller code
996 on threaded platforms.
997 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
998 and cases where no :TEST is given but the compiler can infer that
999 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1000 * optimization: better LOGNOT on fixnums.
1001 * optimization: modular arithmetic for a particular requested width
1002 is implemented using a tagged representation unless a better
1003 representation is available.
1004 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1005 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1006 for wellformedness and returns a specialized vector. (reported by
1007 Francois-Rene Rideau)
1008 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1009 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1010 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1011 unscheduling timer at the same time as another timer fires.
1012 * bug fix: don't reschedule timers for dead threads.
1013 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1014 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1015 bogus errors if select() was interrupted.
1016 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1018 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1019 * enhancement: cleaner backtraces for interactive interrupts, as
1020 well as other cases where the interesting frames used to be
1021 obscured by interrupt handling frames.
1022 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1023 now supported, and tracing a whole package using (TRACE "FOO") now
1024 traces SETF-functions as well.
1025 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1026 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1027 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1028 * unreadably printed representation of hash-tables now includes
1030 * bug fix: partially fixed #188: type propagation from assignments
1031 is now more efficient.
1032 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1033 'DOUBLE-FLOAT) are not flushable.
1034 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1035 full address of the object, and none of the tag bits.
1036 * bug fix: readably printing hash-tables now respects other printer
1037 control variables. (reported by Cedric St-Jean)
1038 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1039 keyword with MAKE-HASH-TABLE.
1040 * bug fix: export SB-POSIX:MKSTEMP.
1041 * bug fix: SORT was not interrupt safe.
1042 * bug fix: XREF accounts for the last node of each basic-block as
1044 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1045 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1046 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1047 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1048 create obsolete instances in the case of redefinition or
1049 obsoletion of a superclass. (thanks to Andy Hefner)
1050 * bug fix: Support for the Alpha architecture has been revived; it had
1051 suffered somewhat from lack of maintenance since sbcl-1.0.
1052 * improvements to the Windows port:
1053 ** The system detects the codepage to use at startup, instead of
1054 using the value from the saved core. (thanks to Kei Suzuki)
1056 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1057 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1058 (see documentation for details.)
1059 * revived support for OpenBSD (contributed by Josh Elsasser)
1060 * partially fixed bug #108: ROOM no longer suffers from occasional
1061 (AVER (SAP= CURRENT END)) failures.
1062 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1063 bodies no longer cause a WARNING to be signalled. (reported by
1065 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1066 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1067 the bug in TRUNCATE.) (reported by Michael Weber)
1068 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1069 no samples. (reported by Andy Hefner)
1070 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1071 no longer appear as (NIL ...) frames in backtraces.
1072 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1073 is now actually exported from SB-EXT as documented. (reported by
1075 * bug fix: sb-aclrepl now correctly understands how to inspect
1076 single-floats on 64-bit platforms where single-floats are not boxed.
1077 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1078 yet been finalized. (reported by Levente Meszaros)
1079 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1080 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1081 SBCL-specific optimize qualities.
1083 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1084 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1085 an executable in the search path, and does so in the child
1086 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1087 been removed; it can be found in the CVS history, for somebody who
1088 needs that search behavior (see the manual).
1089 * minor incompatible change: compiler policy re. weakening type
1090 checks has changed: now type checks are weakened only if SAFETY < 2
1092 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1093 unparsing of directory pathnames as files. Analogously,
1094 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1095 filename to parse into a directory pathname.
1096 * enhancement: implicit generic function creation now signals a
1097 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1098 users can bind handlers for and muffle around calls to LOAD.
1099 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1100 to be used (using the default stream external format), and allows
1101 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1102 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1103 strings and vectors whose element-type or simplicity is not fully
1104 known at compile-time.
1105 * optimization: STRING-TRIM and related functions no longer allocate
1106 a new string when no trimming needs to be performed. These functions
1107 are also faster than before when the input string has been declared
1109 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1110 * optimization: READ-LINE is significantly faster for files containing
1112 * optimization: non-open coded uses of character comparison operators
1113 (e.g. char=) no longer cons when called with more than one parameter
1114 on platforms supporting dynamic-extent allocation.
1115 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1116 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1117 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1119 * bug fix: some sequence functions elided bounds checking when
1121 * bug fix: too liberal weakening of union-type checks when SPEED >
1123 * bug fix: more bogus fixnum declarations in ROOM implementation
1126 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1127 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1128 :SYNCHRONIZED argument, which makes the hash-table safe for
1129 concurrent accesses (but not iteration.) See also:
1130 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1131 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1132 * optimization: CONCATENATE on strings is an order of magnitude faster
1133 in code compiled with (> SPEED SPACE).
1134 * optimization: SUBSEQ is ~50% faster on lists.
1135 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1136 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1137 END is smaller then START.
1138 * bug fix: SB-PROFILE will no longer report extra consing for nested
1139 calls to profiled functions.
1140 * bug fix: ROOM implementation had bogus fixnum declarations which
1141 could cause type-errors when calling ROOM on large images.
1142 * bug fix: if file compilation is aborted, the partial fasl is now
1143 deleted, and COMPILE-FILE returns NIL as the primary value.
1144 * bug fix: number of thread safety issues relating to SBCL's internal
1145 hash-table usage have been fixed.
1146 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1147 be returned from its body when the values were being returned
1148 using unknown-values return convection and the W-P-O was wrapped
1149 inside an UNWIND-PROTECT.
1150 * bug fix: sb-posix should now compile again under Windows, enabling
1151 slime to work again.
1153 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1154 * incompatible change: hash-table accessor functions are no longer
1155 automatically protected by locks. Concurrent accesses on the same hash-table
1156 from multiple threads can give inconsistent results or even corrupt the
1157 hash-table completely. Multi-threaded applications should do their own
1158 locking at the correct granularity. In the current implementation it is
1159 still safe to have multiple readers access the same table, but it's not
1160 guaranteed that this property will be maintained in future releases.
1161 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1162 and will signal an error at runtime.
1163 * enhancement: SB-THREAD package now exports a semaphore interface.
1164 * enhancement: CONS can now stack-allocate on x86 and
1165 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1167 * enhancement: nested lists can now be stack allocated on
1168 platforms providing stack allocation support.
1169 * enhancement: dynamic-extent support has been extended to support
1170 cases where there are multiple possible sources for the stack
1172 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1173 if the mutex is uncontested on Linux.
1174 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1175 as specified by the CLHS. (thanks to Tobias Rittweiler)
1176 * bug fix: NaN comparison now works on x86-64.
1177 * bug fix: CLOSE :ABORT T on a stream with pending output now
1179 * bug fix: instances of non-standard metaclasses using standard
1180 instance structure protocol sometimes missed the slot type checks
1182 * bug fix: known functions can be inlined in high-debug code.
1184 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1185 * minor incompatible change: the MSI installer on Windows no longer
1186 associates .lisp and .fasl files with the installed SBCL.
1187 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1188 on Windows. (thanks to Luis Oliviera)
1189 * new feature: SB-CLTL2 contrib module now implements
1190 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1191 * optimization: scavenging weak pointers is now more efficient,
1192 requiring O(1) instead of O(N) per weak pointer to identify
1193 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1194 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1195 method bodies using constant slot-names when the first argument is
1196 a specializer parameter for the method.
1197 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1198 names, when the class of the instance is a direct instance
1199 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1200 as slow as the constant slot-name case.)
1201 * optimization: member type construction is now O(N) instead
1203 * optimization: UNION and NUNION are now O(N+M) for large
1204 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1206 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1207 now more readable in environments like Slime which display it.
1208 (thanks to Tobias C. Rittweiler)
1209 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1210 was able to infer the correct argument type for the object on which
1211 the CAS operation was being performed.
1212 * bug fix: copy propagation interfered with parallel assignment
1213 semantics in local calls. (reported by Paul Khuong)
1214 * bug fix: the signed modular fixnum shift compiled to wrong code on
1215 x86 and x86-64. (spotted by a slight modification to some of
1218 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1219 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1220 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1221 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1223 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1224 and generic function now print the object identity for anonymous
1225 instances. (thanks to Attila Lendvai)
1226 * enhancement: as an extension to MOP, SBCL now supports SETF of
1227 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1228 (thanks to Attila Lendvai)
1229 * enhancement: sb-cover has an alternate annotation mode which puts
1230 the form annotations at the car of the form, instead of annotating
1231 it completely. The benefit of this mode is that it shows better
1232 which forms were instrumented by the compiler.
1233 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1234 by printer control variables. (reported by Dan Corkill)
1235 * bug fix: system leaked memory when delayed output was performed by
1236 the OS in smaller chunks then expected. (thanks to David Smith)
1237 * bug fix: system leaked memory when file streams were not closed
1239 * bug fix: large objects written to slow streams that were modified
1240 after the write could end up with the modified state written to
1241 the underlying file descriptor.
1242 * bug fix: multiple threads operating in parallel on the same stream
1243 could cause buffer-overflows.
1244 * bug fix: source location information is stored correctly
1245 (broken since 1.0.6). This bug would generally show up as the
1246 Slime debugger highlighting the wrong form when the sldb-show-source
1248 * bug fix: Branch forms are again annotated as branches in the sb-cover
1250 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1251 on x86-64. (reported by Gregory Vanuxem)
1252 * bug fix: EQUALP could return wrong results for structures with raw
1253 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1254 word). (reported by Vjacheslav Fyodorov)
1255 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1258 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1259 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1260 atomic compare-and-swap operations on threaded platforms.
1261 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1262 allows assigning a global minimum value to optimization qualities
1263 (overriding proclamations and declarations).
1264 * enhancement: closed over variables can be stack-allocated on x86
1266 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1268 * optimization: slot definition lookup is now O(1). This speeds up
1269 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1270 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1271 * optimization: ASSOC and MEMBER can now be open-coded for all
1272 combinations of keyword arguments when second argument is constant
1273 and SPEED >= SPACE. In other cases a specialized version is
1275 * bug fix: using obsoleted structure instances with TYPEP and
1276 generic functions now signals a sensible error.
1277 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1278 (reported by Kristoffer Kvello)
1279 * bug fix: backtrace construction is now more careful when making
1280 lisp-objects from pointers on the stack, to avoid creating bogus
1281 objects that can be seen by the GC.
1282 * bug fix: defaulting of values in contexts expecting more than 7
1283 variables now works on x86-64. (reported by Christopher Laux)
1284 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1286 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1287 as the property-list of a symbol.
1288 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1289 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1290 situations requested, are once again file-compileable. (reported
1293 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1294 * MOP improvement: support for user-defined subclasses of
1295 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1296 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1297 the expansion of DEFMETHOD, is responsible for generating a form
1298 which creates a list of specializers when evaluated. Additional
1299 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1300 debugging and introspective support.
1301 * minor incompatible change: the (unsupported) spinlock interface
1302 has changed: free spinlock now has the value NIL, and a held spinlock
1303 has the owning thread as its value.
1304 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1305 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1307 * enhancement: name of a socket-stream is now "a socket" instead of
1308 "a constant string".
1309 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1310 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1311 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1312 for generic functions. (Thanks to Tobias C. Rittweiler)
1313 * optimization: bignum printing speed has been improved by 20-40%
1314 (depending on the bignum size.)
1315 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1317 * bug fix: the cache used by the CLOS to store precomputed effective
1318 methods, slot offsets, and constant return values is now thread and
1320 * bug fix: generic function dispatch function updating is now thread
1321 and interrupt safe (in the sense that the known issues have been
1323 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1324 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1325 * bug fix: asdf systems with dependencies to the SB-POSIX or
1326 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1327 * bug fix: interrupt safety of applicable method computation has been
1330 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1331 * new contrib: sb-cover, an experimental code coverage tool, is included
1332 as a contrib module.
1333 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1334 significantly faster.
1335 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1336 produce more efficient code on x86-64 if the compiler can determine
1337 that (+ INDEX <constant>) does not require a bounds check and FOO
1338 has an element type at least 8 bits wide.
1339 * enhancement: a new, experimental synchronous timeout facility is
1340 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1341 * enhancement: when a symbol name conflict error arises, the
1342 conflicting symbols are always printed with a package prefix.
1343 (thanks to Kevin Reid)
1344 * enhancement: stepping is now once again supported on the SPARC and
1345 MIPS platforms. (It is also now more likely to work on CheneyGC
1347 * enhancement: sb-sprof can now also track and report accurate call
1349 * bug fixes: the treatment of non-standard subclasses of
1350 SB-MOP:SPECIALIZER is more correct.
1351 * incompatible change: PURIFY no longer copies the data from the
1352 dynamic space into the static and read-only spaces on platforms
1353 that use the generational garbage collector
1354 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1356 * bug fix: GC race condition occasionally resulting in crashes with
1357 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1359 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1361 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1362 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1363 * bug fix: an asynchronous interrupt could previously leave the
1364 system running with GC inhibited.
1365 * bug fix: a DECLARE form evaluated at top-level now causes an error
1366 rather than silently (or verbosely) returning NIL.
1367 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1368 result in a error being signalled due to source form lookup errors.
1369 (reported by Peter Graves)
1371 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1372 * incompatible change: removed writer methods for host-ent-name,
1373 host-ent-addresses -- changing the values did not update the DNS
1375 * minor incompatible change: changed experimental JOIN-THREAD interface
1376 * documentation: the manual now lists reader and writer methods
1377 in class slot documentation sections. (thanks to Richard M Kreuter)
1378 * documentation: unwinding from asyncronous events has been
1379 documented as unsafe.
1380 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1381 in multithreaded application code.
1382 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1383 platforms. (thanks to James Anderson for the optimization hint)
1384 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1386 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1387 variants no longer cons.
1388 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1389 their NOT- variants no longer cons.
1390 * optimization: EQUAL hash tables no longer use SXHASH for objects
1391 of all data types, but instead use an EQL hash for types for which
1392 EQUAL is the same as EQL.
1393 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1394 are significantly faster.
1395 * optimization: new STRING-OUTPUT-STREAM implementation is much
1396 faster for large outputs and conses 30% less on average.
1397 * enhancement: XREF information is now collected for references made
1398 to global variables using SYMBOL-VALUE and a constant argument.
1399 * enhancement: SIGINT now causes a specific condition
1400 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1401 * bug fix: FILE-POSITION used to signal an error in some cases where
1402 ANSI requires it to return NIL.
1403 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1404 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1405 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1407 * bug fix: bad type declaration in the CLOS implementation has
1408 been fixed. (reported by James Anderson)
1409 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1410 (thanks to Lutz Euler)
1411 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1412 required by the CLHS. (reported by Samium Gromoff)
1413 * bug fix: dead unbound variable references now signal an error.
1414 (reported by Marco Monteiro)
1415 * bug fix: / with an unused value was being deleted in safe code.
1416 (thanks to Marco Monteiro and Kevin Reid)
1417 * bug fix: number of characters that can be written onto a single
1418 line in a file is unlimited.
1419 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1420 been fixed by inhibiting interrupts for when GC is disabled.
1421 * bug fix: some interrupt safety issues with GETHASH, (SETF
1422 GETHASH), CLRHASH and REMHASH have been fixed.
1423 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1424 specifier no longer causes infinite recursion.
1425 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1426 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1427 * bug fix: an &environment argument with the correct variable information
1428 is passed to macros that are expanded during byte compilation.
1429 (reported by Samium Gromoff)
1430 * bug fix: a logic error was causing the hash function for bignums to
1431 have excessive amounts of collisions. (reported by Faré Rideau)
1432 * bug fix: modifying the contents of an array could change the return
1433 value of SXHASH on that array, which is only allowed for strings
1434 and bit vectors. (bug introduced in 0.9.16)
1435 * improvement: the x86-64/darwin port now passes all tests (except
1436 for the debugger tests) but should still be considered
1437 experimental until this is fixed.
1438 * improvement: a style-warning is signaled for CASE (etc) clauses with
1439 duplicate keys. (thanks to Kevin Reid)
1440 * improvement: macos/x86 and macos/x86-64 now use mach exception
1441 handlers for dealing with illegal instructions (for trapping and
1442 error handling) and memory protection violations (for GC).
1444 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1445 * new platform: experimental support for x86-64/darwin (MacOS).
1446 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1447 and getnameinfo sockets functions are used instead of gethostbyaddr
1448 and gethostbyname, on platforms where the newer functions are available.
1449 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1451 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1452 don't print the startup banner, but behave as if --noinform was passed
1453 as a command line argument. (thanks to Kevin Reid)
1454 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1455 * optimization: code using alien values with undeclared types is much faster.
1456 * optimization: the compiler is now able to open code SEARCH in more cases.
1457 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1458 * bug fix: using standardized COMMON-LISP special variables as loop
1459 variables no longer signals bogus package lock violations. (reported
1461 * bug fix: declaring local loop variables to be of a range-limited type
1462 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1463 (reported by Andras Simon)
1464 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1465 bugs remain on x86-64.)
1466 * bug fix: the #= and ## reader macros now interact reasonably with
1467 funcallable instances.
1468 * bug fix: type-checks for function arguments were compiled using the
1469 compiler policy settings of the wrong lexical environment (in 1.0.2
1471 * bug fix: SHADOW accepts characters as string designators, as required
1472 by the spec (thanks to Eric Marsden)
1473 * bug fix: fixed GC safety issues when foreign functions are called with
1474 non-base strings as arguments
1475 * bug fix: more consistent error output for fatal-compiler-warnings, like
1477 * bug fix: functions with proper names were showing up as NIL in
1478 backtraces (reported by Edi Weitz, regression in 1.0.2)
1480 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1481 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1482 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1483 produce more efficient code on the x86 if the compiler can determine
1484 that (+ INDEX <constant>) does not require a bounds check and FOO
1485 has an element type at least 8 bits wide.
1486 * bug fix: references to undefined variables are handled the same way
1487 in toplevel forms as in the normal compiler
1488 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1490 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1491 (thanks to Jon Buller)
1492 * improvement: faster compilation times for complex functions
1493 * improvement: added readlink support to SB-POSIX (thanks to Richard
1496 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1497 * improvement: experimental support for mach exception handling on
1498 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1500 * improvement: support for GBK external format.
1501 (thanks to Chun Tian (binghe))
1502 * improvement: the debugger now displays variables that have been closed
1503 over, in code compiled with (DEBUG 2) or higher
1504 * improvement: support for executable cores on NetBSD (thanks to
1506 * new feature: added a RESTART-FRAME debugger command
1507 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1508 be used to provide an implementation for FILE-POSITION on Gray streams
1509 (thanks to Eric Marsden)
1510 * new feature: add syslog, openlog and closelog support to SB-POSIX
1511 (thanks to Richard Kreuter)
1512 * optimization: the function call overhead in code compiled with
1513 a high DEBUG optimization setting is significantly
1514 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1515 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1516 (thanks to Tony Martinez)
1517 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1518 evaluated once (reported by Kevin Reid)
1519 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1520 works again (thanks to Kilian Sprotte)
1521 * bug fix: an error is signaled for tagbodies with duplicate tags
1522 (thanks to Stephen Wilson)
1523 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1524 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1525 stack frames from alien callbacks.
1526 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1527 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1528 65k pages (thanks to David Woodhouse)
1529 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1531 changes in sbcl-1.0.1 relative to sbcl-1.0:
1532 * new platform: FreeBSD/x86-64, including support for threading.
1533 * new feature: the compiler stores cross-referencing information
1534 about function calls (who-calls), macroexpansion (who-macroexpands)
1535 and special variables (who-binds, who-sets, who-references) for code
1536 compiled with (< SPACE 3). This information is available through the
1537 sb-introspect contrib.
1538 * new feature: users may subclass SEQUENCE, and have instances of
1539 these classes interoperate with standard Common Lisp functions if
1540 a number of methods are defined. (This feature is experimental
1541 and the interface subject to change based on feedback from SBCL
1542 users and the general community)
1543 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1544 x86/x86-64, rather than the previous fixed depth of 8
1545 * improvement: another pthread back-end of mutex "pthread-futex".
1546 * bug fix: non-ascii command-line arguments are processed correctly
1547 (thanks to Yaroslav Kavenchuk)
1548 * bug fix: non-required arguments were not passed correctly when a method
1549 defined using DEFMETHOD was called from a mop-generated method using
1550 CALL-NEXT-METHOD (reported by Pascal Costanza)
1551 * bug fix: recursion is now permitted in accessors through
1552 SLOT-UNBOUND. (reported by Pascal Costanza)
1553 * bug fix: an error was signaled at startup if the HOME environment
1554 variable was defined, but had an empty value (reported by Peter Van Eynde)
1555 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1556 signal a PROGRAM-ERROR, not a BUG.
1557 * bug fix: SB-POSIX:READDIR works when built with large file support.
1558 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1560 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1561 for better automatic indentation support. (thanks to Matt Pillsbury)
1562 * optimization: loading generic functions no longer takes O(n^2) time,
1563 proportional to the amount of methods in the generic function
1564 (reported by Todd Sabin and Jeremy Brown)
1565 * optimization: the FIND and POSITION family of sequence functions
1566 are significantly faster on arrays whose element types have been
1568 * improvements to the Windows port:
1569 ** Intermittent heap corruption problems have been fixed. (thanks
1570 to Alastair Bridgewater)
1571 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1573 ** Lisp is able to unwind foreign exception frames from alien
1574 callbacks. (thanks to Alastair Bridgewater)
1576 changes in sbcl-1.0 relative to sbcl-0.9.18:
1577 * improvement: experimental support for threading on FreeBSD/x86.
1578 (thanks to NIIMI Satoshi)
1579 * improvement: runtime option --dynamic-space-size can be used
1580 to set the size of the dynamic space reserved on startup.
1581 * improvement: floating point modes in effect are now saved in
1582 core, and restored on startup.
1583 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1584 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1585 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1586 threads are not running after *SAVE-HOOKS* have run.
1587 * improvement: writes to CLOS instance slots are type-checked in code
1588 compiled with (SAFETY 3)
1589 * improvement: floating-point exception handling on FreeBSD (thanks to
1591 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1592 (thanks to Zach Beane)
1593 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1595 * improvement: added support for the Shift-JIS external format.
1596 (contributed by NIIMI Satoshi)
1597 * improvement: callbacks are supported on Linux/PPC. (thanks to
1599 * bug fix: compiler bug triggered by a (non-standard) VALUES
1600 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1601 * bug fix: file compiler no longer confuses validated and already
1602 dumped structurres. (reported by Kaersten Poeck)
1603 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1604 fill-pointer signals a type-error as required. (thanks to
1606 * bug fix: disassemly of funcallable instances works.
1607 * bug fix: single stepping on PPC.
1608 * bug fix: fix thread-safety problems in the type system (generally
1609 manifesting as nonsensical errors like "STRING is a bad type specifier
1610 for sequences" or "The value 1 is not of type FIXNUM")
1611 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1612 (reported by Josip Gracin)
1613 * bug fix: an error is signaled for attempts to displace arrays with
1614 incompatible element types (thanks to Mario Mommer)
1615 * bug fix: more correct handling of wide characters in debug info
1616 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1617 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1618 and don't cause extra consing
1619 * optimization: MAP and MAP-INTO are significantly faster on vectors
1620 whose elements types have been declared.
1621 * Improvements to SB-SPROF:
1622 ** Support for allocation profiling
1623 ** Reduced profiling overhead, especially for long profiling runs
1624 * Improvements to the Windows port:
1625 ** floating point exceptions are now reported correctly.
1626 ** stack exhaustion detection works partially.
1627 ** more accurate GET-INTERNAL-REAL-TIME.
1628 ** better RUN-PROGRAM behaviour in case of errors in the child
1630 ** PROBE-FILE now simplifies pathnames correctly.
1631 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1632 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1633 1st 1970 (although time timezone data will be unreliable).
1634 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1636 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1637 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1638 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1640 * bug fix: two potential GC deadlocks affecting threaded builds.
1641 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1642 returns T (reported by Anton Kazennikov)
1643 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1644 with non-variable places
1645 * bug fix: remove a race condition in the setting of
1646 funcallable-instance functions, this should make threaded CLOS
1647 code more stable against memory faults.
1648 * bug fix: corruption of specials when unbinding is interrupted by an
1649 asynchronous unwind (reported by Hannu Koivisto)
1650 * improvement: the debugger will now also display local variables that
1651 are only used once, for code compiled with a DEBUG optimization quality
1654 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1655 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1656 * incompatible change: External-format support for FFI calls. The
1657 SB-ALIEN:C-STRING no longer implies an ASCII
1658 external-format. Instead the string is subject to external-format
1659 conversion. Additionally return values of type SB-ALIEN:C-STRING
1660 are by default of type (SIMPLE-ARRAY CHARACTER), not
1661 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1662 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1663 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1664 * incompatible change: SB-EXT package no longer contains the
1665 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1666 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1668 * incompatible change: the single-stepper is no longer available
1669 on Alpha, Mips and Sparc platforms.
1670 * minor incompatible change: the direct superclasses of
1671 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1672 not (STANDARD-OBJECT FUNCTION). This makes the
1673 class-precedence-lists of GENERIC-FUNCTION and
1674 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1676 * minor incompatible change: the default stream external format on
1677 non-unicode SBCL is no longer detected from the locale, but is always
1679 * new feature: Add a version of evaluator that uses an interpreter instead
1680 of the compiler. EVAL still uses the compiler by default, to switch it
1681 to use the interpreter, set the value of the variable
1682 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1683 * minor incompatible change: the single-stepper REPL has been merged
1684 with the normal debugger (see the "Stepping" heading of the debugger help
1685 for more details). The debugger command STEP will no longer switch
1686 to the single-stepper REPL.
1687 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1688 for a type now works.
1689 * bug fix: loading of default sysinit file works. (thanks to Leonid
1691 * bug fix: better detection of circularities in the file-compiler.
1692 (reported by Marco Monteiro)
1693 * bug fix: the CL pathname functions now work with files that have
1694 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1695 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1696 systems with Unix98 pty semantics.
1697 * bug fix: ASDF-INSTALL will now work with bsd tar.
1698 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1700 * bug fix: timers expiring in dead threads no longer cause a
1701 type-error (reported by Paul "Nonny Mouse").
1702 * bug fix: thanks to more lightweight single-stepper instrumentation,
1703 code compiled with (DEBUG 3) will compile and execute significantly faster,
1704 and will have more accurate type-inferencing than before
1705 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1706 whose bindings are modified
1707 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1708 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1709 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1710 CL:SOFTWARE-VERSION with proper version
1712 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1713 * feature: implemented the READER-METHOD-CLASS and
1714 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1715 as specified by AMOP.
1716 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1718 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1719 (thanks to Lutz Euler)
1720 * optimization: hashing of general arrays and vectors has been
1721 improved. (reported by Any Fingerhut)
1722 * enhancement: SB-INTROSPECT is now able to find definitions of
1723 profiled functions. (thanks to Troels Henriksen)
1724 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1725 as well, allowing compiler-macros for SETF-functions to expand.
1726 * enhancement: step-instrumentation no longer wraps known
1727 single-value functions with multiple-value context, allowing
1728 better type inference.
1729 * fixed bug #337: use of MAKE-METHOD in method combination now works
1730 even in the presence of user-defined method classes. (reported by
1731 Bruno Haible and Pascal Costanza)
1732 * fixed bug #339(c): if there are applicable methods not part of any
1733 long-form method-combination group, call INVALID-METHOD-ERROR.
1734 (reported by Bruno Haible)
1735 * fixed bug #361: the :FUNCTION initarg in the protocol for
1736 initialization of methods can now be used to override
1737 internally-produced optimized functions. (reported by Bruno
1739 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1740 system-provided lambda expression no longer cause warnings about
1741 unbound #:|pv-table| symbols.
1742 * bug fix: improved the handling of type declarations and the
1743 detection of violations for keyword arguments with non-constant
1745 * bug fix: potentially erronous calls to PATHNAME and
1746 MERGE-PATHNAMES were being flushed in some cases.
1747 (reported by Richard Kreuter)
1748 * bug fix: compiled calls to TYPEP were mishandling obsolete
1749 instances. (reported by James Bielman and Attila Lendvai)
1750 * bug fix: format strings with ~> without matching ~< no longer
1751 trigger an AVER, but signal an understandable error instead.
1752 (reported by Antonio Martinez)
1753 * bug fix: specifying an output-file without a pathname-type for
1754 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1755 of input-file instead of "fasl". (reported by Robert Dodier)
1756 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1757 (reported by James Y Knight).
1758 * bug fix: compiler-macros-function did not consider the environment
1759 argument for shadowing by local functions.
1760 * bug fix: compiler-macros expansion was inhibited by local INLINE
1762 * bug fix: inline expansions of known functions were subject to
1763 step-instrumentation in high debug policies, leading to problems
1764 with type-inference.
1765 * bug fix: compiler failed to differentiate between different CONS
1766 types in some cases.
1767 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1768 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1769 * bug fix: #368: incorrect use of expressed vs. upgraded array
1771 * bug fix: #306a: more precise unions of array types.
1772 * thread-safety improvements:
1773 ** CONDITION-WAIT could return early on Linux, if the thread was
1774 interrupted and subsequently continued with SIGCONT.
1775 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1777 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1778 * added support for the ucs-2 external format. (contributed by Ivan
1780 * minor incompatible change: pretty printing of objects of type
1781 (cons symbol) is, in the default pprint-dispatch-table, now
1782 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1784 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1785 called later in a class's lifetime, possibly as late as when the
1786 first instance of the class is created. Previously,
1787 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1788 class became finalizeable.
1789 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1790 for multibyte external-format streams. (thanks to "vbzoli")
1791 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1792 with :ALLOCATION :CLASS inherited from superclasses of the
1794 * fixed bug: anonymous classes can now be created using the :NAME
1795 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1796 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1797 * fixed bug: core-files saved with :EXECUTABLE T can again be
1798 executed when SBCL_HOME isn't set. (reported by James Knight)
1799 * fixed bug: toplevel LOCALLY forms with declarations could
1800 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1801 * fixed bug: printing from several different threads using different
1802 values of *print-case* could cause invalid output, due to
1803 some internal special variables of the printer not being bound
1804 thread-locally (reported by Max Mikhanosha)
1805 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1806 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1807 (reported by Pascal Costanza)
1808 * fixed bug: FINALIZE-INHERITANCE is called from
1809 REINITIALIZE-INSTANCE on classes when the class has previously
1810 been finalized, as required by AMOP.
1811 * minor code generation optimizations:
1812 ** better register allocation in CLOS dispatching functions
1813 ** overflow detection when coercing signed bytes to fixnums on x86-64
1814 ** is now implemented with one IMUL instruction instead of three shifts
1815 ** more efficient bit-vector access on x86 and x86-64
1816 ** more efficient access to raw structure slots on x86 and x86-64
1817 * fixed some bugs revealed by Paul Dietz' test suite:
1818 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1819 return its argument.
1821 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1822 * feature: thread support on Solaris/x86, and experimental thread support
1824 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1826 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1827 default method for SLOT-UNBOUND.
1828 * minor incompatible change: prevent the user from specializing the
1829 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1830 somewhat counter to the intent of the protocol, I (CSR) think, and
1831 additionally it just doesn't work in SBCL as currently
1832 implemented, thanks to optimizations (that are always valid for
1833 the other three SLOT-VALUEish functions, but not for the setter).
1834 * minor incompatible change: the :SB-LDB feature is now enabled by
1835 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1836 the low-level debugger.
1837 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1838 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1839 down to an SB-SYS:FD-STREAM, allowing direct communication in
1840 more cases. Temporary files and pipes are still used as a fallback
1842 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1843 on the non-reentrant C functions localtime(3) and gmtime(3).
1844 * bug fix: global optimization policy was not visible in LOCALLY and
1846 * bug fix: class objects can be used as specializers in methods.
1847 (reported by Pascal Costanza)
1848 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1849 with a type error. (reported by blitz_ on #lisp)
1850 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1851 failed with a type error. (reported by Pascal Bourguignon)
1852 * bug fix: merging pathnames against defaults with :DIRECTORY
1853 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1854 (reported by James Y Knight)
1855 * bug fix: saving large (>2GB) cores on x86-64 now works
1856 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1857 constant index and a (simple-array (signed-byte 32)) array
1858 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1859 error (patch by Robert J. Macomber)
1860 * feature: TIME now displays the amount of run-time spent in GC
1861 * bug fix: The debugger now does a better job of respecting
1862 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1863 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1864 workaround for bug 403.)
1865 * bug fix: floating point exception handling now works on FreeBSD
1866 (thanks to NIIMI Satoshi)
1867 * fixed some bugs revealed by Paul Dietz' test suite:
1868 ** MISC.641: LET-conversion were not supposed to work in late
1870 * improvements to the Win32/x86 port:
1871 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1872 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1874 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1875 * new feature: source path information is generated for macro-expansion
1876 errors for use in IDE's like Slime (thanks to Helmut Eller)
1877 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1878 * bug fix: compiler does not loop forever on an invalid type in
1880 * improvement: compilation of most CLOS applications is significantly
1882 * optimization: added a limited bytecode compiler for simple toplevel
1883 forms, speeding up compilation and FASL loading
1884 * bug fix: the statistical profiler now properly distinguishes anonymous
1887 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1888 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1889 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1890 into subclasses of the finalized class. Now user calls to
1891 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1892 system return before any subclasses are finalized.
1893 * minor incompatible change: The reader no longer ignores errors
1894 regarding non-existent packages in #+ and #- feature tests.
1895 * new feature: command line options --no-sysinit, --no-userinit to
1896 inhibit loading the corresponding init files
1897 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1898 for sending data through UDP sockets (thanks to François-René Rideau)
1899 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1900 error is signalled instead (thanks to François-René Rideau)
1901 * minor incompatible change: Error signalling behaviour of lexical
1902 operations violating package locks has changed slightly. Refer to
1903 documentation on package locks for details.
1904 * enhancement: EVAL can process IF-expressions without resorting to the
1906 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1907 constant-folded properly due to missing out-of-line functions.
1908 (reported by Mika Pihlajamäki)
1909 * bug fix: LISTEN sometimes returned T even in cases where no data was
1910 immediately available from the stream
1911 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1912 were reversed. (reported by Levente Mészáros)
1913 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1914 when given a vector displaced to an adjustable array. (reported
1916 * bug fix: derivation of float boundaries from numbers outside the
1917 appropriate float range (reported by John Wiseman)
1918 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1920 * bug fix: precomputing cache entries for generic functions with
1921 some subclasses of specializers as yet invalid does not attempt to
1922 fill a cache line with a negative offset. (reported by Levente
1924 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1925 allow condition class objects as arguments to DOCUMENTATION and
1926 (SETF DOCUMENTATION); only find and set documentation for
1927 structure names for the STRUCTURE doc-type. (suggested by Gary
1929 * improvements to the Win32/x86 port:
1930 ** (user-homedir-pathname) and default initialization file
1931 locations now know about the user's "Documents and Settings"
1932 directory (thanks to Yaroslav Kavenchuk)
1933 ** run-program is implemented (thanks to Mike Thomas)
1934 ** sockets support (thanks to Timothy Ritchey)
1935 ** better backtrace support (thanks to Alastair Bridgewater)
1936 ** sb-grovel supported
1937 ** asdf-install and sb-posix work somewhat
1938 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1939 * improvements to the Solaris/x86 port:
1940 ** works on Solaris 11/Solaris Express
1941 ** floating-point exception handling support
1942 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1943 * fixed some bugs revealed by Paul Dietz' test suite:
1944 ** REMOVE-METHOD returns its generic function argument even when
1945 the method is not one of the generic functions' methods.
1946 ** objects declared as MEMBER types can be admissible arguments to
1947 structure accessors.
1948 ** printing characters should simply be printed by the FORMAT ~:C
1950 ** compiler failure when compiling functions with hairy constant
1951 defaults for optional parameters.
1952 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1953 function, which is already optimized.
1955 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1956 * new platform: experimental support for SBCL x86/Darwin, including
1957 MacOS X 10.4.5 on Intel.
1958 * new feature: Unicode character names are now known to the system
1959 (through CHAR-NAME and NAME-CHAR).
1960 * new feature: the filesystem location of SBCL's core file is
1961 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1962 * minor incompatible change: the contrib modules SB-POSIX and
1963 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1964 this change is to make it easier to distribute
1965 location-independent binaries.
1966 * bug fix: as implied by AMOP, standardized classes no longer have
1967 slots named by external symbols of public packages. (reported by
1969 * optimization: calling functions via constant symbols -- as in
1970 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1971 via the function object as in (FUNCALL #'FOO).
1972 * optimization: on x86 and x86-64, the calling convention for the
1973 case of dealing with an unknown number of values has been altered
1974 to be friendlier to the prediction heuristics implemented,
1975 particularly with reference to CALL and RET pairing. (thanks to
1976 Alastair Bridgewater)
1977 * optimization: on x86, the code for access to thread-local symbol
1978 values and binding/unbinding of thread-local symbols is smaller.
1979 (thanks to Alastair Bridgewater)
1980 * enhancement: CONSTANTP is now able to determine constantness of
1981 more complex forms, including calls to constant-foldable standardized
1982 functions and some special forms beyond QUOTE.
1983 * fixed bug: occasional GC crashes on Solaris/x86
1984 * optimization: x86-64 supports stack allocation of results of simple
1985 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1986 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1987 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1988 (thanks to James Knight)
1989 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1990 by the standard (thanks to Stephen Compall)
1992 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1993 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1994 be used for bundling the runtime and the core file into one
1995 executable binary. This feature is not currently supported on all SBCL
1996 platforms. (thanks to James Bielman and NIIMI Satoshi)
1997 * new feature: a generational or ephemeral garbage collector is now
1998 the default on the PowerPC platform (both Linux and Darwin). The
1999 old Cheney (stop and copy) collector is a build-time option.
2000 (thanks to Cyrus Harmon, after Raymond Toy)
2001 * minor incompatible change: the method by which SBCL finds its
2002 contributed modules has changed; it no longer relies on symbolic
2003 links from an $SBCL_HOME/systems directory, but searches directly
2004 in the subdirectories of $SBCL_HOME.
2005 * enhancement: the dynamic heap size on the Linux/PPC platform is
2006 markedly larger, even using the older Cheney garbage collector.
2007 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2008 certain complicated string types. (reported by Gary King)
2009 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2010 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2011 * fixed bug: DOCUMENTATION on structures no longer signals an
2012 error if no structure type of the right name exists. (reported by
2014 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2015 applicable non-standard primary or :AROUND method on
2016 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2017 no longer cause unbound variable errors. (reported by Kevin Reid)
2018 * fixed bug: metacircle resolution in cases where methods have slots
2019 added before the slots from STANDARD-METHOD. (reported by Jean
2021 * fixed bug: the Power PC assembly code for calling into lisp
2022 sometimes computed its return address wrongly (depending on the
2023 15th bit of the address, fixed at link time). This used to
2024 manifest itself in a segmentation violation while building PCL.
2025 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2026 many others over the years)
2027 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2028 the stack pointer (treated as a signed integer) is negative.
2029 (thanks to Peter van Eynde)
2031 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2032 * new platform: experimental support for the Windows operating
2033 system has been added. (thanks to Alastair Bridgewater)
2034 * fixed several bugs in and robustified the PPC FFI (including
2035 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2036 * bug fix: allow non-simple string symbol names (reported by Paul
2038 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2040 * bug fix: saving a core corrupted callbacks on x86/x86-64
2041 * bug fix: closed a loophole in metacircularity detection and
2042 grounding in the PCL implementation of CLOS.
2043 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2044 (reported by tomppa on #lisp)
2045 * bug fix: clear the direction flag on Lisp -> C transitions, as
2046 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2047 (reported by Andrej Grozin and Hendrik Maryns)
2048 * optimization: major improvements to GC efficiency on GENCGC platforms
2049 * optimization: faster implementation of EQUAL
2050 * optimization: emit more efficient opcodes for some common
2051 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2052 * optimization: several other minor code-generation improvements on x86-64
2053 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2055 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2056 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2057 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2058 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2059 by ANSI as a generic function, and for consistency (SETF
2060 GENERIC-FUNCTION-NAME) is treated likewise.
2061 * fixed bug #233.b: make constraint propagation notice when a variable
2062 value is changed after it is referenced but before it is used
2063 * fixed bug #296: no more arbitrary behaviour from filenames with
2064 odd characters as --load arguments. (reported by Adam Warner)
2065 * fixed bug #390: :CHARACTER-SET pathname components now work as
2066 expected. (reported by Tim Daly Jr)
2067 * fixed bug #391: complicated :TYPE intersections in slot
2068 definitions no longer cause an error in PCL internals.
2069 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2070 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2071 returning the number of octets which would be written to the
2072 file-stream. (thanks to Robert J. Macomber)
2073 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2074 arguments to the internal stream functions. (thanks to David
2076 * bug fix: stack exhaustion is now handled on the x86/SunOS
2077 platform. (thanks to Daisuke Homma)
2078 * bug fix: more accurate ROOM results on GENCGC platforms
2079 * optimization: improved type inference for arithmetic-for
2080 index variables in LOOP
2081 * optimization: faster floating-point SQRT on x86-64
2082 * fixed some bugs revealed by Paul Dietz' test suite:
2083 ** DOCUMENTATION returns NIL instead of "" for method combinations
2084 that don't have a docstring
2086 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2087 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2088 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2089 therefore are not customizeable by user code (as seems to be at
2090 least permitted and maybe required by AMOP). As a consolation,
2091 however, the SBCL implementation of these functions now calls
2092 REINITIALIZE-INSTANCE as specified by AMOP.
2093 * bug fix: slot-definition documentation is propagated as per ANSI
2094 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2095 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2096 argument, as do eslotd initialization methods. (from Pascal
2097 Costanza's "Closer" project)
2098 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2099 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2101 * bug fix: it is now possible to have more than one subclass of
2102 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2103 (reported by Bruno Haible, Pascal Costanza and others)
2104 * bug fix: the dependent update protocol now works for generic
2105 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2106 and Pascal Costanza)
2107 * bug fix: condition-class instances corresponding to
2108 DEFINE-CONDITION forms are now created eagerly. (reported by
2109 Kalle Olavi Niemitalo on comp.lang.lisp)
2110 * bug fix: floating point printing is more accurate in some
2111 circumstances. (thanks to Simon Alexander)
2112 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2113 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2114 * bug fix: callbacks on OS X now preserve stack-alignment.
2115 (thanks to Cyrus Harmon)
2116 * enhancement: the x86-64 disassembler is much better at
2117 disassembling SSE instructions. (thanks to Lutz Euler)
2118 * enhancement: CHECK-TYPE on a variable now allows type-inference
2119 (thanks to Vincent Arkesteijn)
2120 * optimization: improved performance of EUC-JP external format.
2121 (thanks to NIIMI Satoshi)
2122 * optimization: performance improvements to IO on file streams of
2123 :ELEMENT-TYPE CHARACTER
2124 * optimization: much faster memory allocation on x86-64
2125 * optimization: faster garbage collections (latency and throughput)
2127 * optimization: faster bignum subtraction and division on x86 and x86-64
2128 (thanks to Lutz Euler)
2129 * optimization: more accurate type-inference for loops that use a
2130 floating point index variable or a negative step.
2132 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2133 * bug fix: add a workaround to SBCL looping infinitely at startup on
2134 Linux kernels with apparently buggy implementations of personality().
2135 (thanks to Svein Ove Aas)
2136 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2137 (thanks to David Lichteblau)
2138 * bug fix: local bindings shadow global symbol macros for
2139 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2140 * optimization: non-open coded uses of numeric comparison operators
2141 (e.g. >) no longer cons when called with more than one parameter
2142 on platforms supporting dynamic-extent allocation.
2143 * enhancement: saving cores with foreign code loaded is now supported
2144 on MIPS/Linux in addition to the previously supported platforms.
2145 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2146 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2147 * bug fix: division by zero in sb-sprof when no samples were collected
2148 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2149 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2150 (thanks to Alexander Kjeldaas)
2151 * new feature: ignoring the return values of destructive functions
2152 like NREVERSE signals a compile-time style-warning.
2153 (thanks to Kevin Reid)
2154 * new feature: the alignment of alien structure fields can be
2155 explicitly specified. (thanks to Cyrus Harmon)
2156 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2157 and dump core on SIGQUIT
2159 ** incompatible change: threads do not inherit values of specials
2160 from their parents (see manual)
2161 ** bug fix: threads stacks belonging to dead threads are freed by the
2162 next exiting thread, no need to gc to collect thread stacks anymore
2163 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2164 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2165 ** bug fix: dynamic variable and thread start related gc lossage
2166 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2168 * fixed some bugs revealed by Paul Dietz' test suite:
2169 ** SUBTYPEP is slightly more accurate on heinously complicated
2170 CONS types where some of the members have uncertain (in the
2171 NIL, NIL sense) type relationships to each other.
2173 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2174 no longer purified unless :PURIFY T is explicitly specified.
2175 ** Non-purified cores are significantly smaller than before
2177 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2178 * new feature: timers based on Zach Beane's excellent timer package
2179 * added support for the following external formats: koi8-u,
2180 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2181 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2182 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2183 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2184 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2185 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2186 * incompatible change: a threaded SBCL will no longer revert to
2187 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2188 * bug fix: interrupts are disabled until startup is complete; no
2189 more sigsegvs when receiving a signal to soon
2190 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2192 * bug fix: add a workaround for the memory randomization features in
2193 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2194 workaround will only be in effect on systems with the proc filesystem
2196 * bug fix: printing objects of type HASH-TABLE signals a
2197 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2199 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2200 have been running for over 50 days. (reported by Gilbert Baumann)
2201 * bug fix: the logic for getting names of functions gets less
2202 confused when confronded with alternate-metaclass
2203 funcallable-instances. (reported by Cyrus Harmon)
2204 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2205 consistent, even on internal alternate-metaclass objects.
2206 * bug fix: flush closure information collected by physical
2207 environment analysis prepass before the main pass. (bug reported
2209 * bug fix: compiler pack phase does not modify a hashtable, which is
2210 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2211 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2212 may be expanded. (reported by Alexander <malishev> on c.l.l)
2213 * bug fix: no more style-warnings when compiling code using LAST
2214 under high-SPEED low-SPACE settings. (reported by David Wallin
2216 * fixed some incompatibilities between SBCL's MOP and the MOP
2218 ** the METAOBJECT class is now implemented;
2219 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2220 STANDARD-OBJECT, as required;
2221 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2222 now compatible (as required by VALIDATE-SUPERCLASS); there
2223 remains a consistency requirement over the presence or absence
2224 of the FUNCTION class in the superclass list of finalized
2225 classes; see the manual for more details;
2226 ** the :AROUND method for COMPUTE-SLOTS on
2227 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2228 requested slot ordering.
2230 ** bug fix: parent thread now can be gc'ed even with a live
2232 ** bug fix: binding a special with PROGV to no value is not
2233 the same as that symbol not having been bound (thanks to
2235 ** bug fix: binding specials is thread safe (thanks to
2237 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2238 and SB-SPROF do not die with 'no handler for signal XX in
2239 interrupt_handle_now(..)' anymore
2240 ** bug fix: WITH-TIMEOUT works with multiple running threads
2241 * fixed some bugs revealed by Paul Dietz' test suite:
2242 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2243 the :method-class keyword argument.
2245 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2246 * new port: the Solaris operating system on x86 processors is now
2247 mostly supported, though some rough edges in the environment
2248 remain. (thanks to Daisuke Homma)
2249 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2250 space for its heap. (thanks to Thiemo Seufer)
2251 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2252 closures. (thanks to Thiemo Seufer)
2253 * minor incompatible change: eof selects abort in the debugger.
2254 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2255 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2257 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2258 deprecated, and will go away in a future revision of SBCL.
2259 * minor incompatible change: GC-ON and GC-OFF are no longer
2260 implemented with a counter, it does not matter how many times gc
2261 is switched on or off
2262 * bug fix: discriminating functions for generic function classes
2263 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2264 make invalid assumptions about method precedence order. (reported
2266 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2267 platforms. (thanks to Thiemo Seufer)
2268 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2269 * bug fix: correct pathname printing with printer escaping is on.
2270 (thanks to Kevin Reid)
2271 * bug fix: complex VOP definitions in "user-space" no longer trigger
2272 package locks. (reported by Zach Beane)
2273 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2274 for funcallable-instance functions, and is no different from
2276 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2277 characters in the current readtable. (reported by Nicholas Neuss)
2278 * bug fix: SUBTYPEP on various CONS types returns more a more
2279 accurate acknowledgment of its certainty.
2280 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2281 lists in some cases. This partially fixes bug 384.
2282 * flush all standard streams before prompting in the REPL and the
2284 * bug fix: signal handling and triggering gc do not conflict
2285 directly anymore, in particular a high frequency sb-sprof does
2286 not prevent gc from running
2287 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2288 approximation for timezone and DST information between the
2289 universal time epoch and the smallest negative 32-bit time_t.
2290 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2291 year 1899 so long as the encoded time is non-negative.
2292 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2293 the correct answer for non-constant rotate amounts when performing
2294 an inline 32-bit rotation.
2296 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2297 there is only one thread in the session
2298 ** bug fix: memory leak for streams created in one thread and
2299 written to in another
2300 ** bug fix: lockup when compiled with gcc4
2301 ** bug fix: race that allows the gc to be triggered when gc is
2303 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2304 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2306 ** bug fix: finished threads are gc'ed properly
2307 * fixed some bugs revealed by Paul Dietz' test suite:
2308 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2309 has arguments with a different set of applicable methods from
2310 the orignal arguments.
2311 ** The type error thrown by MAP now has a correct expected-type
2313 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2314 name a compiled function.
2315 ** Three MISC tests where a large bignum was improperly coerced to
2316 a float that couldn't represent that bignum during type
2317 derivation were fixed.
2318 ** SUBTYPEP can now handle types involving the negation of a
2319 list-form FUNCTION type.
2320 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2321 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2322 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2324 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2325 * New feature: Experimental support for bivalent streams: streams
2326 opened with :element-type :default now allow character and binary
2327 (unsigned-byte 8) I/O
2328 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2329 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2331 * bug fix: no more highly sporadic "couldn't check whether ~S is
2332 readable" when reading a stream and an interrupt hits in the middle
2333 of a select system call
2334 * compiler better recognizes complex arrays (reported by Eduardo
2336 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2337 for variables on SBCL built with linkage-tables. (reported by Luis
2339 * various error reporting improvements.
2340 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2341 (Thanks to Thiemo Seufer)
2342 * bug fix: nested reader invokations work correctly
2343 * bug fix: it is possible to have simultaneous references to foreign
2344 code and foreign data with the same name.
2346 ** added x86-64 support
2347 ** incompatible change: the threading api now works with thread
2348 objects instead of thread ids
2349 ** bug fix: threads are protected from signals and interruption when
2350 starting up or going down
2351 ** bug fix: a race where an exiting thread could lose its stack to gc
2352 ** bug fix: don't halt on infinite error in threads if possible
2353 ** fixed numerous gc deadlocks introduced in the pthread merge
2354 ** bug fix: fixed thread safety issues in read and print
2355 ** bug fix: debugger doesn't hang on session lock if interrupted at
2356 an inappropriate moment
2357 ** bug fix: run-program is now thread safe(r)
2358 ** bug fix: inner with-recursive-lock no longer releases the mutex
2359 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2360 * fixed some bugs revealed by Paul Dietz' test suite:
2361 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2362 EXPECTED-TYPE slots filled.
2363 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2365 ** MAKE-CONDITION accepts classes as type-designators.
2366 ** COMPILE may never return NIL.
2367 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2368 range before calling Unix time functions
2370 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2371 * numerous signal handling fixes to increase stability
2372 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2373 * minor incompatible change: we now correctly canonize default
2374 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2375 as per the MOP, rather than the historical (INITARG INITFUNCTION
2376 INITFORM). (reported by Bruno Haible)
2377 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2378 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2379 for more information.
2380 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2381 pathname is a directory pathname.
2382 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2383 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2385 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2386 :METACLASS argument in addition to a class name. (reported by
2387 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2388 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2389 (reported by Bruno Haible; patch from Gerd Moellmann)
2390 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2392 * bug fix: more cleanups to the floating point exception handling on
2393 x86-64 (thanks to James Knight)
2394 * bug fix: the compiler does not try to constant fold calls of
2395 COERCE and BIT-* functions when they return freshly constructed
2396 objects. (reported by Nikodemus Siivola and Paul Dietz)
2397 * optimization: improved the MIPS versions of generic (in the
2398 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2399 * optimization: direct conversion of (unsigned-byte 32) to floats on
2400 the PowerPC platform.
2401 * optimization: structure instances with raw slots now use less
2402 memory, and probably show better memory locality. (thanks to
2404 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2405 are treated as requests for stack allocation on the x86-64,
2406 Alpha-32, PPC and SPARC platforms.
2407 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2408 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2409 (thanks to Tony Martinez)
2411 ** gcing a dead thread can no longer lead to lockups
2412 ** threads block signals until they are set up properly
2413 ** errno is no longer shared by threads
2414 ** interrupt-thread restores the eflags register on x86
2415 ** fixed some lockups due to gc/thread interaction
2416 * fixed some bugs revealed by Paul Dietz' test suite:
2417 ** invalid dotted lists no longer raise a read error when
2418 *READ-SUPPRESS* is T
2419 ** signal an error if a symbol that names a declaration is used
2420 as the name of a type, or vice versa
2421 ** allow using the (declare (typespec var*)) abbreviation for
2422 (declare (type typespec var*)) with all type specifiers
2423 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2424 ** always return NIL from PPRINT-POP when OBJECT is NIL
2425 ** don't signal errors when pretty-printing malformed LABELS,
2426 FLET or MACROLET forms
2427 ** declarations in a DOLIST body are also in scope for the
2429 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2431 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2434 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2435 * fixed cross-compiler leakages that prevented building a 32-bit
2436 target with a 64-bit host compiler.
2437 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2438 opened with :IF-EXISTS :OVERWRITE.
2439 * fixed bug 281: error for an invalid qualifier in a short-form method
2440 combination method is not signalled until the faulty method is called.
2441 * bug fix: iteration variable type inferrer failed to deal with open
2442 intervals. (reported by Alan Shields)
2443 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2444 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2445 or more runtime options were provided to the sbcl binary.
2446 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2447 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2448 * optimization: there's now a fast-path for fixnum arguments in the
2449 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2450 * optimization: the code generated on x86-64 is more compact thanks
2451 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2452 * bug fix: floating-point exception handling now partly works on
2453 x86-64. (Thanks to James Knight)
2454 * improvement to the MIPS backend from Thiemo Seufer: C-style
2455 64-bit long long arguments and return values to alien functions
2457 * fixed some bugs revealed by Paul Dietz' test suite:
2458 ** the type-error signalled from WARN has a filled-in DATUM slot.
2459 ** the type-error required when a stream is not associated with
2460 a file has the stream as its datum.
2461 ** type-errors on single-floats on x86-64 no longer have
2462 :INVALID-OBJECT as the datum
2463 ** the type-errors signalled for invalid function names now have
2464 a correct expected type
2465 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2466 for structures defined with a :TYPE. Documentation strings for
2467 typed structures are no longer immediately discarded
2468 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2469 broadcast streams and synonym streams. FILE-LENGTH now also works
2470 on broadcast streams.
2472 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2473 * incompatible change: the --noprogrammer option, deprecated since
2474 version 0.7.5, has been removed. Please use the equivalent
2475 --disable-debugger option instead.
2476 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2478 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2479 inoperational for a while now) has been completely removed.
2480 * null lexical environments are now printed as #<NULL-LEXENV>,
2481 significantly reducing the amount of clutter in typical backtraces.
2482 * documentation on weak pointers, finalization, and after GC hooks
2483 has been added to the manual.
2484 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2485 as other specialized array types, is much faster. SUBSEQ and
2486 COPY-SEQ on such arrays have also been sped up.
2487 * optimization: EQL is now more efficient when at least other argument
2488 is known to be of type (OR FIXNUM (NOT NUMBER)).
2489 * fixed bug: the runtime is now less vulnerable to changes in the
2490 size of the SBCL object on OS X, and virtual memory is reserved for
2491 all spaces that need to be at a fixed address.
2492 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2493 * fixed bug: finalizers and after GC hooks that cause consing are now
2495 * fixed bug: compiler error messages and summaries are now printed to
2496 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2497 * fixed inference of the upper bound of an iteration variable.
2498 (reported by Rajat Datta).
2499 * fixed bug 211e: calling local functions with duplicated constant
2500 keyword argument no longer causes a bogus style warning about an
2502 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2503 ftype declaration to be disregarded. (reported by Dave Roberts)
2504 * fixed bug 373: caused by erronous compilation of references to alien
2505 variables in the runtime on ppc/darwin.
2506 * fixed bug 376: CONJUGATE type deriver.
2507 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2508 (reported by Baughn on #lisp)
2509 * a cross-compiler bug on non-x86 platforms has been identified and
2510 fixed. (thanks to Bruno Haible)
2511 * improvements to the MIPS runtime code for increased stability.
2512 (thanks to Thiemo Seufer)
2513 * increased the maximimum compact environment size to allow
2514 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2515 * partial workaround for bug 135: don't name the function we're
2516 calling for hairy cases of EVAL, so as not to accumulate one environment
2517 entry per call to EVAL. (reported by Kevin Reid)
2518 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2519 * optimization: type testing for non-vector arrays should be faster.
2520 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2522 * bug fix: setting 31st element of a bit vector to zero did not work
2524 * bug fix: redefining a class definition which failed due to a
2525 previous accessor / function clash now works (but see BUGS entry
2526 #380 for more problems in this area). (thanks to Zach Beane)
2527 * the long form of DEFINE-METHOD-COMBINATION disables method group
2528 checking when given a single method group with pattern *. (thanks
2530 * on x86 compiler supports stack allocation of results of simple
2531 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2532 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2533 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2534 * fixed some bugs related to Unicode integration:
2535 ** the restarts for recovering from input and output encoding
2536 errors only appear when there is in fact such an error to
2538 * fixed some bugs revealed by Paul Dietz' test suite:
2539 ** MISC.549 and similar: late transformation of unsafe type
2540 assertions into derived types caused unexpected code
2542 ** SCALE-FLOAT type deriver is less wrong.
2543 ** type derivers for EXP, LOG and similar functions compute result
2544 types for complex arguments better.
2545 ** (MISC.563) CONJUGATE type deriver works for very restricted
2547 ** out-of-line type testers for character strings are available.
2548 ** EQUAL compiler transform understands specialness of objects
2550 ** accessing double-floats stored on the stack now works on x86-64.
2551 ** debugger internals could sometimes create invalid lispobjs,
2552 resulting in GC crashes.
2553 ** MISC.548: type check weakening can convert required type into
2555 ** initialization forms for bindings are not in scope of free special
2558 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2559 * incompatible change: thread support for non-NPTL systems has
2560 been removed - locking is buggy and unreliable. A threaded
2561 SBCL build will now warn at startup and refuse to create
2562 new threads, unless futex support is detected in the kernel
2563 * incompatible change: the top level REPL now has only an ABORT
2564 restart associated with it, not TOPLEVEL and ABORT as it used to.
2565 TOP and TOPLEVEL are now available as debugger commands for
2566 returning to the top level.
2567 * incompatible change: forms evaluated in the REPL now use the
2568 global optimization policy.
2569 * incompatible change: user- and system-initialization files are
2570 no longer processed with LOAD, but by READ and EVAL; hence the
2571 global optimization policy, startup package, readtable, etc,
2573 * The .fasl file format number has been incremented because of
2574 various incompatible changes.
2575 * internal entry point details and argument counts no longer appear
2576 in backtraces unless explicitly requested by setting
2577 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2578 * built-in and standard functions no longer have names like "top
2579 level local call to FOO".
2580 * fixed bug 32: functions defined in non-null lexical environments
2581 now have more legible printed representation
2582 * fixed bug 33: functions defined in non-null lexical environemnts
2583 are now more amenable to inspection by INSPECT.
2584 * workaround for bug 354: XEPs no longer appear in backtraces unless
2585 explicitly requested.
2586 * fixed bug: receiving the signal which results from attempting to
2587 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2588 SIGBUS on other *BSDs) on architectures where the C stack is also
2589 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2590 to debugger confusion or wild instability. (reported by Cheuksan
2592 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2593 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2594 (reported by Lutz Euler)
2595 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2596 compiled code. (reported by Paul Dietz)
2597 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2598 specialized parameter to a method to something that is not TYPEP
2599 the specializer is now possible.
2600 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2601 face of package deletion.
2602 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2603 pathname. (reported by David Tolpin on c.l.l)
2604 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2605 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2606 STRING-STREAM and FILE-STREAM, respectively.
2607 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2608 than previously; in addition, its test suite is now run on build.
2609 (thanks to Luke Gorrie)
2610 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2611 * optimization: added a immediate representation for single-floats
2613 * fixed some bugs revealed by Paul Dietz' test suite:
2614 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2615 ** attempting to create a package with a colliding nickname causes
2616 correctable errors to be signalled.
2617 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2618 ** several x86-64 backend bugs related to sign-extension of immediate
2621 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2622 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2623 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2625 * fixed loading of multiply forward-referenced layouts.
2626 (thanks to Cheuksan Wang)
2627 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2628 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2629 (see COMPILE-FILE documentation for details of :PRINT option)
2630 * fixed bugs 19 and 317: fixed-format floating point printing is
2631 more accurate. This also fixes a bug reported by Adam Warner
2632 related to the ~@F format directive.
2633 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2635 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2636 dispatch table if the from-char is a dispatch macro character.
2637 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2638 by the wordsize no longer ignore the last word. (reported by Lutz
2640 * fixed bug in type checking of dynamic-extent variables. (reported
2642 * optimization: sequence traversal functions use their freedom to
2643 coerce function designators to functions.
2644 * optimization: code with many calls to CLOS methods specialized on
2645 CLOS classes has had redundant type checks removed.
2646 * optimization: added declarations to speed up operations that access
2647 the internal character database (for example STRING-UPCASE)
2648 * optimization: comparison operations between floats and sufficiently small
2649 fixnums no longer create extra rationals
2650 * fixed some bugs related to Unicode integration:
2651 ** portions of multibyte characters at the end of buffers for
2652 character-based file input are correctly transferred to the
2653 start of the buffer at the next read.
2654 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2655 passing it through to OPEN.
2656 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2657 argument given to internal calls to OPEN.
2658 ** the built-in comment readers (introduced by character sequences
2659 ";" and "#|") are more forgiving to encoding errors; they will
2660 STYLE-WARN and then attempt to resync the stream at a character
2661 boundary. (thanks to Teemu Kalvas)
2662 * fixed some bugs in the x86-64 port:
2663 ** Negative short int return values from c-calls are sign-extended
2665 ** The stack is aligned to 16-bytes for c-calls, as required by
2666 the ABI. (thanks to Cheuksan Wang)
2667 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2668 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2669 for enums. (thanks to Vincent Arkesteijn)
2670 ** Multiple small optimizations and bugfixes for floating point
2672 * fixed some bugs revealed by Paul Dietz' test suite:
2673 ** Space, Tab, Linefeed, Return and Page have the invalid
2674 secondary constituent character trait.
2675 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2677 ** WITH-INPUT-FROM-STRING should only update the index place on
2679 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2680 works more reliably.
2681 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2682 with one-dimensional arrays with fill pointers.
2683 ** TYPE-OF failed on a complex with an integer realpart and a
2685 ** compiler failure during type inference for the code of form
2686 (IF (EQL X (THE ...)) ...) (MISC.535).
2688 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2689 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2690 platform. The port supports 61-bit fixnums, large memory spaces
2691 and reloading shared object files.
2692 * enhancement: saving cores with foreign code loaded is now
2693 supported on ppc/Darwin in addition to the previously supported
2695 * enhancement: the statistical profiler now walks deeper into the
2696 call stack for more meaningful call-graphs and accrued time
2697 reports (x86/x86-64 only). It also now reports time spent in
2699 * enhancement: it is now possible to trace most individual methods
2700 of a generic function in addition to tracing the generic function
2702 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2704 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2705 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2706 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2707 produces an error. (thanks to Vincent Arkesteijn)
2708 * bug fix: NAMESTRING on pathnames with :WILD components in their
2709 directories works correctly. (thanks to Artem V. Andreev)
2710 * fixed bug 125: compiler preserves identity of closures. (reported
2712 * bug fixed: functions with &REST arguments sometimes failed with
2713 "Undefined function" when compiled with (DEBUG 3). (reported by
2715 * bug fix: overflow during compiling of setting element of a bit
2716 vector with constant index and value. (reported by Timmy Douglas)
2717 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2718 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2719 * on x86 compiler partially supports stack allocation of dynamic-extent
2721 * GO and RETURN-FROM do not check the extent of their exit points
2722 when compiled with SAFETY 0.
2723 * fixed some bugs related to Unicode integration:
2724 ** encoding and decoding errors are now much more robustly
2725 handled; it should now be possible to recover even from invalid
2726 input or output to the terminal. (thanks to Teemu Kalvas)
2727 ** provided a first cut at implementing STRING-TO-OCTETS and
2728 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2729 ** altered the SB-MD5 contributed module slightly, changing the
2730 interface just enough for it to be supportable for builds where
2731 lisp characters are not eight bits.
2732 * fixed some bugs revealed by Paul Dietz' test suite:
2733 ** the FORMATTER-generated functions for ~V[ conditionals require
2734 the correct number of arguments.
2735 ** READ-FROM-STRING returns the mandated second value when applied
2736 to displaced strings.
2737 ** the #\Rubout and #\Backspace characters are treated as invalid
2738 constituent characters by the tokenizer.
2740 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2741 * new feature: reloading changed shared object files with
2742 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2743 * new feature: references to foreign variables and functions
2744 can now be compiled and loaded before the corresponding shared
2745 object file is loaded, as long as the foreign definitions are
2746 available at runtime.
2747 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2748 supported. (thanks to Dan Debertin)
2749 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2750 just keywords. (thanks to Vincent Arkesteijn)
2751 * fixed bug #331: structure-class instances corresponding to
2752 DEFSTRUCT forms are now created eagerly.
2753 * fixed bug #345: backtraces from calls to undefined functions work
2754 on x86 as well. Related bug #61 is now also partially fixed on x86
2755 (backtraces from throws to unknown catch tags.)
2756 * bug fix: lambda-list parsing is now stricter vrt. order and number
2757 of lambda-list keywords.
2758 * bug fix: as specified by AMOP, an error is signalled if a
2759 class-option appears multiple times in a DEFCLASS form. (reported
2761 * bug fix: RANDOM can be compiled when the compiler derives the type
2762 of its numeric argument as a disjoint set of small integers.
2763 (reported by Paul Dietz)
2764 * bug fix: starting a core saved with shared objects loaded when
2765 those objects are not available no longer causes threaded SBCL to
2766 hang. (reported by Sean Ross)
2767 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2769 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2770 argument, which must always be NIL. (reported by Kalle Niemitalo)
2771 * bug fix: printing 1.0d+23 no longer results in an error.
2772 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2773 * bug fix: structure slot setters preserve evaluation order. (thanks
2775 * fixed some bugs related to Unicode integration:
2776 ** RUN-PROGRAM can allow its child to take input from a Lisp
2777 stream. (reported by Stefan Scholl)
2778 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2779 locales. (reported by Ken Causey)
2780 * fixed some bugs revealed by Paul Dietz' test suite:
2781 ** INCF, DECF and REMF evaluate their place form as specified in
2783 ** FORMATTER expands ~{ ~} iteration directives with V or #
2784 parameters correctly.
2785 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2786 consequent uses no arguments correctly.
2787 ** the system has a partial understanding of the (COMPLEX RATIO)
2789 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2792 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2793 * new feature: a build-time option (controlled by the :SB-UNICODE
2794 keyword feature, enabled by default) for building the system with
2795 support for the entire 21-bit character space defined by the
2797 * new feature: the system now has rudimentary external-format
2798 support; the primary user-visible change at this time is that
2799 characters with the high bit set (such as lower-case-e-acute) will
2800 print correctly to a terminal in a UTF-8 environment.
2801 * minor incompatible change: BASE-CHAR no longer names a class;
2802 however, CHARACTER continues to do so, as required by ANSI.
2803 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2804 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2805 has been moved to the SB-EXT package (temporarily re-exported from
2807 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2808 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2810 * fixed bug #351: better error-handlind and reporting for malformed
2812 * fixed bug #350: bignum-printing is now more memory-efficient,
2813 allowing printing of very large bignums, eg. (expt 2 10000000).
2814 (reported by Bruno Haible)
2815 * fixed bug #302: better primitive-type selection for intersection
2817 * fixed bug #308: non-graphic characters now all have names, as
2818 required. (reported by Bruno Haible)
2819 * bug fix: redefining a class with different superclasses now correctly
2820 removes it from the direct-subclasses of its previous superclasses.
2821 (reported by David Morse)
2822 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2823 new value now works. (reported by Bruno Haible)
2824 * bug fix: correct canonicalization of multiple non-standard slot
2825 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2826 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2827 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2828 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2829 now exists, an signals an error.
2830 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2831 during macroexpansion for non-iteration variables as well. (reported
2832 by Bruno Haible for CMUCL)
2833 * bug fix: Cyclic structures and unprintable objects in compiler
2834 messages no longer cause errors. (reported by Bruno Haible)
2835 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2836 and READ-FROM-STRING all now return a primary value of NIL if
2837 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2838 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2839 (reported by Bruno Haible for CMUCL)
2840 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2841 do not designate a condition. (reported by Bruno Haible for
2843 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2844 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2845 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2846 permitting resolution in favour of any of the conflicting symbols.
2847 (reported by Bruno Haible for CMUCL)
2848 * bug fix: EQUAL compiler optimizations is less aggressive on
2849 strings which can potentially compare true despite having distinct
2850 specialized array element types.
2851 * bug fix: unit enumerations can be defined without dividing by
2852 zero. (thanks to Vincent Arkesteijn)
2853 * FORMAT compile-time argument count checking has been enhanced.
2854 (report from Bruno Haible for CMUCL)
2855 * a partial workaround for the bug 262: the compiler does not try to
2856 inline-expand a local function doing RETURN-FROM from a deleted
2857 BLOCK. (thanks to Peter Denno for the bug report and to David
2858 Wragg for the simple test case)
2859 * fixed some bugs revealed by Paul Dietz' test suite:
2860 ** RENAME-PACKAGE allows all package designators as new package
2862 ** constraint propagation and lambda variable substitution are
2863 more cautious in dealing with partially deleted code.
2864 ** compiler sometimes lost reoptimization passes.
2865 ** CERROR, given a condition as condition designator, passes its
2866 remaining arguments to the continue format control without
2868 ** Case-altering FORMAT directives work correctly on non-ASCII
2870 ** The REAL type specifier handles bounds outside the floating
2871 point ranges without signalling FLOATING-POINT-OVERFLOW.
2872 ** Functions with IR1-transformations can create intercomponent
2873 references to global functions.
2874 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2876 ** FORMAT ~R treats a nil value for its first parameter correctly.
2878 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2879 * enhancement: saving cores with foreign code loaded is now
2880 supported on x86/NetBSD and sparc/Linux in addition to the previously
2881 supported platforms.
2882 * bug fix: on some platforms repeated installations caused multiple
2883 copies of HTML documentation to be installed -- should not happen
2884 any more. (reported by Stefan Scholl)
2885 * bug fix: parsing self-recursive alien record types multiple times
2886 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2887 original patch by Helmut Eller for CMUCL)
2888 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2889 (thanks to Richard Kreuter)
2890 * bug fix: defining classes whose accessors are methods on existing
2891 generic functions in other (locked) packages no longer signals
2892 bogus package lock violations. (reported by François-René Rideau)
2893 * bug fix: special variables as DEFMETHOD parameters no longer have
2894 associated bogus type declarations. (reported by David Wragg and
2896 * bug fix: read-write consistency on streams of element-type
2897 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2898 * bug fix: redefiniton of the only method of a generic function with
2899 no DEFGENERIC no longer emits a full WARNING. In addition,
2900 redefinition of generic functions with no DEFGENERIC to an
2901 incompatible lambda list now signals an error. (thanks to Zach
2903 * bug fix: DEFGENERIC now works even when there's a function of the
2904 same name in an enclosing lexical environment. (thanks to Zach
2906 * fixed compiler failure, caused by instrumenting code during
2907 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2908 * optimization: added loop analysis and improved register allocation
2909 * fixed some bugs revealed by Paul Dietz' test suite:
2910 ** POSITION on displaced vectors with non-zero displacement
2911 returns the right answer.
2912 ** (SIMPLE-STRING) is a valid type specifier for sequence
2914 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2916 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2917 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2919 ** The justification version of the FORMAT ~< directive treats
2920 non-zero minpad parameter correctly.
2922 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2923 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2924 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2925 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2926 the supported interface.
2927 * new feature: Single-stepping of code compiled with DEBUG 2 or
2928 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2929 * new feature: saving cores with foreign code loaded is now
2930 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2931 Timothy Moore's work for CMUCL)
2932 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2933 parameters to * instead of NIL if no initform is supplied.
2934 (reported by Johan Bockgaard)
2935 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2936 correctly when FUNCALL appears as the car of the form. Note:
2937 despite this FUNCALL forms are not currently subject to
2938 compiler-macro expansion. (port of Raymond Toy's fix for the
2939 same from CMUCL, reported by Johan Bockgaard)
2940 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2941 (thanks for Teemu Kalvas)
2942 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2943 case instead of terminating the iteration (thanks for Julian
2944 Squires, Sean Champ and Raymond Toy)
2945 * bug fix: incorrect expansion of defgeneric that caused a style
2946 warning. (thanks for Zach Beane)
2947 * bug fix: slot accessor effective method computation works properly
2948 for classes with multiple non-standard applicable methods on
2949 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2950 * on x86 compiler supports stack allocation of results of LIST and
2951 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2952 CMUCL implementation by Gerd Moellmann)
2953 * fixed some bugs revealed by Paul Dietz' test suite:
2954 ** FORMAT strings with both the ~<~:;~> form of the justification
2955 directive and pretty-printing directives cause an error.
2957 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2958 * incompatible change: the internal functions
2959 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2960 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2961 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2962 instead of the old functions.
2963 * new feature: on platforms where "dladdr" is available foreign
2964 function names now appear in backtraces. (based on Helmut Eller's
2966 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2967 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2969 * documentation: ASDF manual is now distributed with SBCL.
2970 * bug fix: SBCL can now load its contributed modules with REQUIRE
2971 even if the system-provided entries have been removed from
2972 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2974 * bug fix: backtraces involving undefined functions or assembly
2975 routines are more informative. (thanks to Brian Downing)
2976 * bug fix: mutually referent alien structures now work correctly.
2977 (reported by Rick Taube)
2978 * bug fix: structures defined by WITH-ALIEN can be referred to
2979 within other definitions in the same WITH-ALIEN.
2980 * bug fix: division operators (MOD, TRUNCATE and the like) with
2981 constant zero divisors and integer dividends no longer generate
2983 * bug fix: provide default methods for INPUT-STREAM-P and
2984 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2985 * bug fix: improve the detection and resolution of MOP metacycles
2986 (where effective method computation depends on the generic function
2987 having its effective method computed). (reported by Bruno Haible)
2988 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2989 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2990 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2991 * bug fix: pathnames with relative directory components can be
2992 represented relative to default pathnames.
2993 * optimization: in taking the GCD of bignums, reduce the two bignums
2994 to approximately the same size (using Euclid's algorithm) before
2995 applying the more sophisticated binary GCD. (thanks to Juho
2997 * optimization: COUNT on bitvectors now operates word-at-a-time.
2998 * optimization: ASH with a positive, but not necessarily constant,
2999 (leftwards) shift, when in a modular context, is compiled to a
3001 * fixed some bugs revealed by Paul Dietz' test suite:
3002 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3003 if the corresponding argument is NIL.
3004 ** FORMAT directives accepting a minpad parameter treat negative
3006 ** literal commas as character parameters to FORMAT directives are
3008 ** literal spaces directly after ~<Newline> directives within a
3009 format-logical-block (~:< ~@:>) do not induce :FILL-style
3010 conditional newlines.
3011 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3012 as specified: it no longer includes conditional newlines).
3013 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3015 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3016 :PER-LINE-PREFIX argument does not evaluate to a string.
3018 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3019 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3020 the manual for details; for now, package locks can be disabled by
3021 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3022 if no major problems are found then it is likely that they will be
3023 compiled in unconditionally.
3024 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3025 unsupported operators on all platforms. To load a shared library
3026 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3027 object file, link it into a shared library outside of SBCL and
3028 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3030 * bug workaround: ROOM T and the GC were not working together
3031 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3032 reporting facility aren't preserved. That reporting has been
3033 disabled, so now until and unless someone figures out how to make it
3034 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3035 * minor incompatible change: as threatened around sbcl-0.8.0, the
3036 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3037 The symbols are also exported from SB-PCL for backwards
3038 compatibility, but more so than before SB-PCL should be treated as
3039 an implementation-internal package.
3040 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3042 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3043 It is known as of this release not to work on the Alpha, however.
3044 * fixed bug #167: errors signalled due to illegal syntax in method
3045 bodies are now more legible.
3046 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3047 designators and can hence be used with TYPEP.
3048 * fixed bug #333: CHECK-TYPE now ensures that the type error
3049 signalled, if any, has the right object to be accessed by
3050 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3051 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3052 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3054 * fixed bug #334: programmatic addition of slots using specialized
3055 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3056 and :ALLOCATION :CLASS slots.
3057 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3058 float exponents. (rereported by Peter Seibel)
3059 * fixed a bug: #\Space (and other whitespace characters) are no
3060 longer considered to be macro characters in standard syntax by
3061 GET-MACRO-CHARACTER.
3062 * fixed bug: initialization of condition class metaobjects no longer
3063 causes an instance of the condition to be created. (reported by
3065 * fixed bug: it is now possible to have slots such that
3066 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3067 description is neither :INSTANCE nor :CLASS.
3068 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3069 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3070 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3071 non-standard SLOT-DEFINITION-ALLOCATION values.
3072 * fixed bugs: various race conditions handling exiting threads.
3073 CL-PPCRE's thread torture test now passes.
3074 * fixed arguably-a-bug: GC time proportional to number of threads in
3075 system even when most of them are idle
3076 * optimization: improved performance of BIT and SBIT on bit-vectors.
3077 * .fasl file incompatibility: The fasl file version number has
3078 been incremented because of changes associated with package locks.
3080 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3081 * minor incompatible change: the system no longer provides
3082 optimization hints (conditions which are TYPEP
3083 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3084 mode; these hints are still emitted when higher SPEED optimization
3086 * new contrib module: a sampling profiler (profiling by statistical
3087 sampling, rather than by instrumenting functions) is available as
3088 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3089 * the behaviour of the standard function ED is now customizeable by
3090 third parties through a hook variable: see ED's documentation
3091 string for information on the protocol.
3092 * the compiler no longer emits efficiency notes for (FUNCALL X)
3093 when the type of X is uncertain under default optimization
3095 * fixed bug 276: mutating a binding of a specialized parameter to a
3096 method to something that is not TYPEP the specializer is now
3098 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3099 exhibit the required behaviour on the x86 platform. (thanks to
3100 Peter van Eynde, Eric Marsden and Bruno Haible)
3101 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3102 even for difficult arguments. (reported by Peter Graves)
3103 * fixed bug 141a: the backquote printer now descends quoted
3105 * fixed another bug in backquote printing: no more destructive
3106 modification of the form's list structure. (reported by Brian
3108 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3109 move between its address being taken and the call to
3110 interrupt_thread, fixing a crashing race condition.
3111 * the SB-POSIX contrib implementation has been adjusted so that it
3112 no longer exhibits ridiculously poor performance when constructing
3113 instances corresponding to C structs.
3115 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3116 * minor incompatible change: the sb-grovel contrib now treats C
3117 structures as alien (in the sense of SB-ALIEN) objects rather than
3118 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3119 has implications for memory management of client code
3120 (sb-grovel-returned objects must now be manually managed) and for
3121 type safety (alien objects now have full types).
3122 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3123 used to control emission of compiler diagnostics, rather than the
3124 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3125 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3126 quality should be considered deprecated.
3127 * install.sh now installs the user manual as well
3128 * (not quite a new documentable feature, but worth considering in
3129 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3130 beginnings of a semantically meaningful condition hierarchy is
3131 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3133 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3134 designator as the defaults argument.
3135 * fixed bug: Displaced arrays whose displaced-to array has become
3136 too small now cause ARRAY-DIMENSION to signal an error, providing
3137 for safer bounds-checking. (reported by Bruno Haible)
3138 * fixed bug: DEFCLASS slot definitions with identical :READER and
3139 :WRITER names now signal a reasonable error. (reported by Thomas
3141 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3143 * fixed bug: Invalid slot specification errors now print correctly.
3144 (thanks to Zach Beane)
3145 * fixed bug 320: Shared to local slot value transfers in class
3146 redefinitions now happen corrently from superclasses as
3147 well. (reported by Bruno Haible)
3148 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3150 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3151 improper lists correctly. (reported by Bruno Haible)
3152 * fixed bug 313: source-transform for <fun-name> was erroneously
3153 applied to a call of a value of a variable with name <fun-name>.
3154 (reported by Antonio Menezes Leitao)
3155 * fixed bug 307: The obsolete instance protocol ensures that
3156 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3157 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3158 remove dead unknown-values globs from the middle of the stack.
3159 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3160 easier to resume long computations after using *BREAK-ON-SIGNALS*
3161 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3162 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3163 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3164 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3165 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3166 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3168 * fixed a (fairly theoretical) bug in string printing: if
3169 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3170 does not have array-element-type equal to the most general string
3172 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3173 function name. (thanks to Nikodemus Siivola)
3174 * fixed bug: compile-time format string checker failed on
3175 non-closed ~{. (reported by Thomas F Burdick)
3176 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3177 don't warn on legal loop code involving more than one aggregate
3178 boolean. (thanks to Nikodemus Siivola)
3179 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3180 in keyword position to MAKE-PACKAGE was not being reported as
3182 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3183 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3185 * fixed bugs 280 and 312: the checking for multiple definitions in a
3186 file is less likely to become confused by uses of inline
3188 * fixed bug: the #S reader macro performs the keyword coercion
3189 specified for slot names. (reported by Kalle Niemitalo)
3190 * fixed bug: lambda lists may contain symbols whose names start with
3191 & but are not lambda-list-keywords; their occurrence triggers a
3193 * fixed bug 321: define-method-combination argument lambda lists do
3194 not cause invalid code to be generated when &optional or &aux
3195 variables have default values. (reported by Bruno Haible)
3196 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3197 have CLOS classes; this appears also to have fixed reported
3198 instability in stack exhaustion detection.
3199 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3200 MUFFLE-WARNING when no associated restart is present is now
3202 * optimization: rearranged the expansion of various defining macros
3203 so that each expands into only one top-level form in a
3204 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3206 * optimization: used a previously little-used slot in symbols to
3207 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3209 * fixed some bugs revealed by Paul Dietz' test suite:
3210 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3212 ** Fixed an optimization bug related to inheritance of initforms
3213 from local to shared slots.
3214 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3215 ** CAST optimizer forgot to flush argument derived type.
3216 ** print/read consistency on floats is now orders of magnitude
3217 more likely. (thanks also to Bruno Haible for a similar report
3219 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3220 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3221 for objects of type REAL. Make it so.
3222 ** SXHASH is specified (infelicitously) to respect similarity,
3223 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3224 it so. (thanks to Markus Ziegler)
3225 ** on the Alpha, the compiler succeeds in compiling functions
3226 returning a known number of arguments greater than 63.
3227 ** fixed handling of invalid NIL arguments in keyword position
3229 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3231 ** provided a readably-printable representation for RANDOM-STATE
3233 ** ensured that pathnames, where they have a namestring, always
3234 print using #P"..." syntax.
3236 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3237 * Support for the forthcoming 2.0 version of the NetBSD kernel
3238 running on x86 hardware has been added. (thanks to Perry
3239 E. Metzger most immediately, and others for their past work)
3240 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3241 current release version; SBCL's OpenBSD support had been broken
3242 since about the time of OpenBSD's switch to ELF binary format.)
3243 * [placeholder for DX summary]
3244 ** user code with &REST lists declared dynamic-extent, under high
3245 speed or space and low safety and debug optimization policy.
3246 * The manual has been converted to Texinfo format and the debugger
3247 chapter from the cmucl manual has been added.
3248 * A facility has been added to extract documentation strings from
3249 sbcl and store them as Texinfo-formatted snippets for inclusion in
3250 the manual (via Texinfo's @include directive)
3251 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3252 the test case to Dave Roberts)
3253 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3254 pointers. (reported by Sean Ross)
3255 * bug fix: PROFILE output is printed nicely even for large numerical
3256 values. (thanks to Zach Beane)
3257 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3258 greater than 32 handle EOF correctly.
3259 * bug fix: on X86 an immediate argument of the IMUL instruction is
3260 correctly printed in disassembly. (thanks to Lutz Euler)
3261 * bug fix: class slots in redefined classes preserve their old
3262 values. (thanks to Bruno Haible and Nikodemus Siivola)
3263 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3264 succeeds. (reported by Marco Baringer)
3265 * fixed some bugs revealed by Paul Dietz' test suite:
3266 ** READ-SEQUENCE now works on ECHO-STREAMs.
3267 ** RATIONALIZE works more according to its specification. (thanks
3270 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3271 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3272 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3273 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3274 should matter to you only if you rebind the printer control
3275 variables and then find you want different bindings in the
3276 debugger than in the ordinary execution of your program.)
3277 * The runtime build system has been tweaked to support building
3278 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3279 assembler and linker. (thanks to Nikodemus Siivola)
3280 * Unbound, undefined, undeclared variables now trigger full
3281 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3282 more often programmer error than deliberate exploitation of undefined
3284 * optimization: the hash algorithm for strings has changed to one
3285 that is less vulnerable to spurious collisions. (thanks to Juho
3287 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3288 needless bounds checking. (thanks to Juho Snellman)
3289 * optimization: implemented multiplication as a modular
3290 (UNSIGNED-BYTE 32) operation on the PPC backend.
3291 * fixed some bugs revealed by Paul Dietz' test suite:
3292 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3294 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3295 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3296 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3298 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3300 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3302 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3303 their output stream on EOF from read.
3304 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3305 have been read to end-of-file.
3306 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3308 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3309 description of determination of which consecutive characters
3311 ** Printing the "Space" character with escaping on now yields "#\\ ",
3312 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3313 ** Reading floating-point numbers with *READ-BASE* set to a number
3314 less than 10 works correctly.
3315 ** Reading floating-point numbers with *READ-BASE* set to a number
3316 more than 10 works correctly.
3317 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3318 the readtable currently in effect.
3320 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3321 * minor incompatible change: parsing of namestrings on a physical
3322 (Unix) host has changed; numbers after the final #\. in a
3323 namestring are no longer interpreted as a version field. This is
3324 intented to be largely invisible to the user, except that the
3325 meaning of the namestring "*.*.*" has changed: it now refers to a
3326 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3327 should usually be replaced by
3328 (make-pathname :name :wild :type :wild :version :wild)
3329 with the added benefit that this is more likely to be portable.
3330 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3331 option to OPEN now signals an error if the file being opened
3332 exists; this may have an impact on existing code.
3333 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3334 signals received, on the PowerPC platforms (both Linux and
3335 Darwin). (thanks to Pierre Mai for pointing out the location of
3337 * several fixes on OS X: The system now builds and runs cleanly on
3338 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3339 (thanks to Brian Mastenbrook)
3340 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3341 second-resolution: integer multiples of 1/3600 between -24 and 24.
3342 (thanks to Vincent Arkesteijn)
3343 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3344 type when called with 1 argument; PEEK-CHAR checked type of
3345 PEEK-TYPE only after having read first character from a
3346 stream. (reported by Peter Graves)
3347 * bug fix: the garbage collector now has much better locality
3348 behaviour, and in particular no longer treats all memory as being
3349 exhausted when many small objects point to each other in a deeply
3351 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3352 recognized as being TYPEP their class.
3353 * bug fix: the PUSHNEW documentation string has been corrected.
3354 (thanks to Vincent Arkesteijn)
3355 * bug fix: defaulting of the value for the last of an atypically
3356 large number of multiple values being bound was not being
3357 performed correctly on the Alpha or PPC platforms
3358 * optimization: implemented multiplication as a modular
3359 (UNSIGNED-BYTE 32) operation on the x86 backend.
3360 * optimization: SEARCH on simple-base-strings can now be open-coded.
3361 (see also contrib/compiler-extras.lisp for inspiration for
3362 teaching the compiler about the Boyer-Moore algorithm).
3363 * value, returned by MAX (and MIN) called with several EQUALP, but
3364 not EQL, arguments now does not depend on compiler settings.
3365 * fixed some bugs revealed by Paul Dietz' test suite:
3366 ** in stack analysis liveness information is propagated from
3367 non-local entry points.
3368 ** pathwise CAST removing failed when the CAST node did not start
3370 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3371 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3373 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3374 host is already defined.
3375 ** RENAME-FILE works on streams instead of signalling an internal
3377 ** PEEK-CHAR uses the current readtable when determining whether
3378 or not a character is whitespace.
3379 ** MERGE-PATHNAMES handles the case when the pathname does not
3380 specify a name while the default-pathname specifies a version.
3381 ** Pathnames now stand a better chance of respecting print/read
3383 ** Attempting to use standardized file system operators with a
3384 pathname with invalid :DIRECTORY components signals a
3386 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3388 ** DIRECTORY on logical pathnames is more correct.
3389 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3390 signal a TYPE-ERROR if their argument is not a stream.
3391 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3392 designator argument does not designate a stream.
3393 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3394 examining the synonym.
3395 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3397 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3398 element-type larger than ([UN]SIGNED-BYTE 32).
3400 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3401 * When built with the :SB-FUTEX feature, threaded builds now take
3402 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3403 for faster/more reliable mutex and condition variable support.
3404 * Incompatible change (but one you probably shouldn't have been using
3405 anyway): the interface and code for arbitrating between multiple
3406 threads in the same user session has been redesigned.
3407 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3408 error when called without an explicit environment argument.
3409 (thanks to Nikodemus Siivola)
3410 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3411 confused about their position. (thanks to Adam Warner and Gerd
3413 * bug fix: Pretty printing backquoted forms with unquotations in the
3414 argument list position of various code constructs such as LAMBDA
3415 now works correctly. (reported by Paul Dietz)
3416 * bug fix: Pretty printing unquotations no longer loses all
3417 stream position information.
3418 * optimization: performance of string output streams is now less
3419 poor for multiple small sequence writes.
3420 * optimization: performance of CSUBTYPEP in the presence of complex
3421 expressions involving CONS and NOT many times has been improved.
3422 (reported by Paul Dietz)
3423 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3425 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3426 streams for the REPL, for the debugger, and so on. (thanks to
3428 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3429 * fixed some bugs revealed by Paul Dietz' test suite:
3430 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3431 is ignored if it is too small, rather than propagating through
3432 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3433 ** extremely complex negations of CONS types were not being
3434 sufficiently canonicalized, leading to inconsistencies in
3436 ** VALUES tranformer lost derived type.
3438 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3439 * fixed a bootstrapping bug: the build process no longer assumes
3440 that the various BOOLE-related constants have the same value in
3441 host and target lisps. (noted by Paul Dietz' test suite on an
3442 SBCL binary built from CLISP)
3443 * The system can now be dynamically linked on the MIPS platform,
3444 which enables dynamic loading of foreign code from Lisp. (thanks
3445 to Ralf Baechle for discussions on the MIPS ABI)
3446 * The system now records debugging information for its own source
3447 files in a filesystem-position-independent manner, relative to
3448 the "SYS" logical host.
3449 * fixed a compiler bug: MV-LET convertion did not check references
3450 to the "max args" entry point. (reported by Brian Downing)
3451 * tweaked disassembly notes to be less confident about proclaiming
3452 some instruction as an LRA. (thanks to Brian Downing)
3453 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3454 now each have their own history, command character, and other
3455 characteristics. (thanks to David Lichteblau)
3456 * fixed some bugs revealed by Paul Dietz' test suite:
3457 ** compiler failure in compiling LOGAND expressions including a
3459 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3460 shift greater than 32.
3461 ** FLUSH-DEST did not mark blocks for type check regeneration.
3462 ** HANDLER-CASE failed to accept declarations in handler clauses
3463 in some circumstances.
3465 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3466 * New code in contrib/sb-introspect (still probably not entirely
3467 stable yet) provides some support for smart Lisp development
3468 environments like SLIME.
3469 * The conditions signalled for errors occurring when loading .fasl
3470 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3471 in a way which should help ASDF recover gracefully.
3472 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3473 stuff has been cleaned up. If you code contrib/ stuff, this might
3474 affect you, and you can look at contrib/README, contrib/STANDARDS,
3475 and/or the 0.8.4.27 diff to check.
3476 * In full calls the compiler now does not generate checks for declared
3477 argument types for all arguments.
3478 * various threading fixes
3479 ** and some experimental patches which didn't make it into
3480 the main tree for this release, but which are shipped in
3481 contrib/experimental-thread.patch as a possible fix for some
3482 failures (deadlock, spinning...) in GC-intensive multithreaded
3484 * fixed PPC build problem (source code incompatibility of different
3485 library versions): added offsetof() hackery which attempts to divine
3486 where glibc maintainers put uc_mcontext today
3487 * fixed bug 282: compiler does not trust type assertions while passing
3488 arguments to a full call.
3489 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3490 &OPTIONAL VALUES type parameter.
3491 * fix bug 214: algorithm for noting rejected templates is now more
3492 similar to that of template seletion. (also reported by rydis on
3494 * fixed bug 141b: printing backquoted information readably and prettily
3495 inserts a space where necessary.
3496 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3497 (CHARACTER 10) are now reported as errors, rather than propagated
3498 as unknown types. (reported by piso on #lisp)
3499 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3500 with values NIL and :ERROR. (thanks to Milan Zamazal)
3501 * fixed bug 191c: CLOS now does proper keyword argument checking as
3502 described in CLHS 7.6.5 and 7.6.5.1.
3503 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3504 longer raise an error; further, using a list as a for-as-arithmetic
3505 counter now raises a meaningful error.
3506 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3507 now understood by sequence creation functions such as MAKE-SEQUENCE
3509 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3510 a STRING-INPUT-STREAM.
3511 * compiler enhancement: SIGNUM is now better able to derive the type
3513 * type declarations inside WITH-SLOTS are checked. (reported by
3515 * fixed some bugs revealed by Paul Dietz' test suite:
3516 ** incorrect optimization of TRUNCATE for a positive first
3517 argument and negative second.
3518 ** compiler failure in let-convertion during flushing dead code.
3519 ** compiler failure while deriving type of TRUNCATE on an
3520 interval, containing 0.
3521 ** ASH of a negative bignum by a negative bignum count now returns
3523 ** intersection of CONS types now canonicalizes properly, fixing
3524 inconsistencies in SUBTYPEP.
3526 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3527 * incompatible change: The --disable-debugger command line
3528 option now clobbers the debugger at a more fundamental
3529 level, by redefining #'INVOKE-DEBUGGER instead of by
3530 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3531 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3532 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3533 enter the debugger REPL and then suffer recursive errors
3534 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3535 while under the new system, BREAK in --disable-debugger mode
3536 terminates the system just as an unhandled error would.
3537 * fixed compiler performance when processing loops with a step >1;
3538 * bug fix: DOCUMENTATION now retrieves generic function
3539 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3540 support has been systematized, and now supports the methods
3541 specified by ANSI, along with a default method and a method for
3542 slot documentation. (reported by Nathan Froyd)
3543 * bug fix: effective methods associated with a generic function are
3544 no longer cached over a change of that generic function's method
3545 combination. (reported by Andreas Fuchs)
3546 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3547 names a non-existent directory. (thanks to Andreas Fuchs)
3548 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3549 the PPC platform, lead to stack corruption; this has been fixed.
3550 (reported by Rainer Joswig)
3551 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3552 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3553 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3554 arithmetic in general, is now much more reliable on the PPC
3556 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3557 platform now returns the right answer.
3558 * optimization: restored some effective method precomputation in
3559 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3560 precomputation is now tunable.
3561 * optimization: compiler-internal data structure use has been
3562 reviewed, and changes have been made that should improve the
3563 performance of the compiler by about 20%.
3564 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3565 simple-base-strings and simple-bit-vectors is improved.
3566 * optimization: the optimization of 32-bit logical and arithmetic
3567 functions introduced in version 0.8.3 on the x86 has been
3568 implemented on the mips, ppc and sparc platforms; an
3569 implementation of the same facility, but for 64-bit arithmetic,
3570 has been added for the alpha.
3571 * microoptimization: the compiler is better able to make use of the
3572 x86 LEA instruction for multiplication by constants.
3573 * bug fix: in some situations compiler did not report usage of
3574 generic arithmetic in (SPEED 3) policy.
3575 * bug 145b fix: compiler used wrong type specifier while converting
3576 MEMBER-types to numeric.
3577 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3579 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3580 index argument now works properly on the Alpha platform.
3581 * bug fix: floating point exception treatment on the Alpha platform
3583 * bug fix: FILE-POSITION works much better on string input and
3584 output streams. (thanks to Nikodemus Siivola)
3585 * bug fix: many threading/garbage collection symptoms sorted.
3586 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3587 might be pseudo-atomic.
3588 * internal change: Stopping for GC is now done with signals not
3589 ptrace. GC is now done in whichever thread wanted it, instead of
3591 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3593 * bug fix: result form in DO is not contained in the implicit
3595 * incompatible change: ICR structure is changed; the value part of
3596 CONTINUATION is now called LVAR; corresponding functions are
3597 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3598 * added type deriver for ISQRT (thanks to Robert E. Brown).
3599 * bug fix: better support for loading from the command line when an
3600 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3602 * fixed some bugs revealed by Paul Dietz' test suite:
3603 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3604 ** ROUND and FROUND now give the right answer when given very
3605 small float arguments.
3606 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3608 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3609 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3610 ** LCM should return a non-negative integer.
3611 ** PARSE-INTEGER returned the index of a terminator instead of the
3612 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3613 ** PARSE-INTEGER returned an incorrect index being applied to a
3615 ** LCM with two arguments of 0 returns 0 rather than signalling
3617 ** unsigned addition of a 32-bit constant with the high bit set no
3618 longer causes an internal compiler error on the x86.
3619 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3620 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3621 with negative last argument.
3622 ** byte specifiers with zero size and position no longer cause
3623 an error during type derivation.
3624 ** bignum multiplication on the Alpha platform now returns the
3626 * porting: The system now builds on SuSE AMD64, although it still
3627 generates a 32-bit binary.
3628 * .fasl file incompatibility: The fasl file version number has
3629 been incremented (because of the changes to internal compiler
3630 data structures referred to above).
3632 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3633 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3634 more accurately, on the Darwin kernel running on PowerPC hardware.
3635 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3636 * Compiler code deletion notes now signal a condition of type
3637 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3638 an associated MUFFLE-WARNING restart.
3639 * The compiler now performs limited argument count validation of
3640 constant format strings in FORMAT, and where appropriate in ERROR,
3641 CERROR and WARN. (thanks to Gerd Moellmann)
3642 * New ASDF-INSTALL contrib can be used for automatic download and
3643 installation of third-party Lisp code from CCLAN or other sites
3645 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3646 which forces another thread to execute a function supplied by the
3648 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3649 now accept and act upon their :ELEMENT-TYPE keyword argument.
3650 (reported by Martin Atzmueller, Edi Weitz)
3651 * bug fix: FILE-POSITION now accepts position designators up to
3652 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3653 is the greater. (thanks to Patrik Nordebo)
3654 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3655 Kalle Olavi Niemitalo)
3656 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3657 printable. (reported by Eric Marsden)
3658 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3659 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3660 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3661 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3662 (thanks to Stig Sandoe)
3663 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3664 UNREAD-CHAR now correctly includes the unread character in the
3665 target sequence. (thanks to Gerd Moellmann)
3666 * bug fix in threaded builds: the system can now be suspended and
3667 resumed by shell job control with minimal disruption.
3668 * bug fixes in times and timezones >2038AD
3669 * better handling of "where is GNU make?" problem in build scripts
3670 (thanks to Nikodemus Siivola)
3671 * new optimization: inside a named function any reference to a
3672 function with the same name is considered to be a self-reference;
3673 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3674 optimization quality.
3675 * new optimization on x86: logical functions and + now have
3676 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3677 used when the result is truncated to 32 bits.
3678 * VALUES declaration is partially enabled.
3679 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3680 * fixed some bugs revealed by Paul Dietz' test suite:
3681 ** The system now obeys the constraint imposed by
3682 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3683 types form a lattice under type intersection.
3684 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3685 ** ASSOC now ignores NIL elements in an alist.
3686 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3687 and (1+ MOST-POSITIVE-FIXNUM) answers.
3688 ** The addition of a method with invalid qualifiers to a generic
3689 function does not cause an error to be signalled immediately;
3690 a warning is signalled, and the error is generated only on
3691 calling the generic function.
3692 * changed .fasl file version number, in part to add type codes for
3693 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3694 obscure ANSI requirements
3696 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3697 * fixed bug 148: failure to inline-expand a local function left
3698 garbage, confusing the compiler.
3699 * fixed bugs 3cd: structure slot readers perform type check if the
3700 slot can have an invalid value (i.e. it is either not initialized
3701 or can be written with a less specific slot writer).
3702 * bug fix: the compiler now traps array references to elements off
3703 the end of an array; previously, the bounds checking in some
3704 circumstances could go off-by-one.
3705 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3707 * type declarations for array element types now obey the description
3708 on the CLHS page "Declaration TYPE", as per discussions on
3709 sbcl-help around 2003-05-08. This means that a declaration
3710 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3711 declaration, all references to BAR will be asserted or assumed
3712 (with THE, so dependent on compiler policy) to involve objects of
3713 type FOO. Note that no such declaration is implied in
3714 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3715 * declared types of functions from the "Conditions"
3716 chapter. (reported by Paul Dietz)
3717 * bug fix: CERROR accepts a function as its first argument.
3718 * bug fix: NTH an NTHCDR accept a bignum as index
3719 arguments. (reported by Adam Warner)
3720 * optimization: character compare routines now optimize comparing
3721 against a constant character. (reported by Gilbert Baumann)
3722 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3723 argument now works properly on the MIPS platform.
3724 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3725 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3726 declared to have a functional type, does not cause an error
3728 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3729 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3730 * fixed bug: if last continuation of a deleted block has a
3731 destination, this destination should be deleted too. (reported by
3733 * fixed a bug in the bootstrap process: the host compiler's values
3734 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3735 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3736 test case from Patrik Nordebo)
3737 * improved the ability of the disassembler on the PPC platform to
3738 provide helpful disassembly notes.
3739 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3740 the class in more cases than previously.
3741 * bug fix: FILE-POSITION now understands :START and :END for
3742 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3743 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3744 8) data. (thanks to David Lichteblau)
3745 * bug fix: it is possible to add a method to a generic function
3746 without lambda list.
3747 * bug fix: reader failed to signal END-OF-FILE inside an
3748 object representation. (reported by Nikodemus Siivola)
3749 * fixed some bugs revealed by Paul Dietz' test suite:
3750 ** LAST and [N]BUTLAST should accept a bignum.
3751 ** condition slot accessors are methods.
3752 ** (VECTOR NIL) is a subtype of STRING.
3754 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3755 * minor incompatible change: some nonsensical specialized lambda
3756 lists (used in DEFMETHOD) which were previously ignored now signal
3758 * minor incompatible change: the system is now aware of the types of
3759 variables in the COMMON-LISP package, and will signal errors for
3760 most violations of these type constraints (where previously they
3761 were silently accepted).
3762 * minor incompatible change: COMPILE-FILE now uses the freedom
3763 afforded (ANSI 3.2.2.3) to use derived function types for
3764 functions defined in the same file. This also permits the system
3765 to warn on static type mismatches and function
3766 redefinition. (Currently it does not work with high DEBUG level.)
3767 * minor incompatible change: VALUES declaration is disabled.
3768 * When issuing notes, the compiler now signals a condition of type
3769 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3770 restart for use in user handlers. It is expected that the
3771 COMPILER-NOTE condition will eventually become a condition
3772 supertype to a hierarchy of note types, which will then be
3773 handleable in a similar fashion. However, at the moment, no such
3774 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3775 but it's an implementation detail, not a classification for the
3777 * Changes in type checking closed the following bugs:
3778 ** type checking of unused values (192b, 194d, 203);
3779 ** template selection based on unsafe type assertions (192c, 236);
3780 ** type checking in branches (194bc).
3781 * A short form of VALUES type specifier has ANSI meaning (it has
3782 increased the number of situations when SBCL cannot perform type
3784 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3785 keywords or constants is permissible.
3786 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3787 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3788 classes. (thanks to Antonio Martinez)
3789 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3790 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3791 argument to a pretty-print stream. Instead, it leaves any such
3792 operations to DESCRIBE-OBJECT methods.
3793 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3795 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3796 lambda lists. (thanks to David Lichteblau)
3797 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3798 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3799 (thanks to Gerd Moellmann)
3800 * fixed bug 246: increased compilation speed of long
3801 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3803 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3805 * DEFCONSTANT now throws a condition of type
3806 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3807 constant to a non-EQL value; CONTINUE and ABORT restarts
3808 respectively change and preserve the value.
3809 * fixed bug 63: The code walker, part of the implementation of CLOS,
3810 is now better at handling symbol macros.
3811 * bug fix: There is no longer an internal implementation type named
3812 CL:LENGTH. (reported by Raymond Toy)
3813 * bug fix: In macro-like defining macros/special operators the
3814 implicit block does not enclose the lambda list.
3815 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3816 enclosed in parentheses) are not suitable as type specifiers, and
3817 their use properly signals an error now.
3818 * bug fix: An argument count mismatch for a type specifier in code
3819 being compiled no longer causes an unhandled error at compile
3820 time, but signals a compile-time warning.
3821 * fixed simple vector readable printing
3822 * bug fix: DESCRIBE takes more care over whether the class
3823 precedence list slot of a class is bound before accessing it.
3824 (reported by Markus Krummenacker)
3825 * bug fix: FORMATTER can successfully compile pretty-printer format
3826 strings which use variants of the ~* directive inside.
3827 * bug fix: SEARCH now applies its TEST predicate to the elements of
3828 the arguments in the correct order. (thanks to Wolfhard Buss)
3829 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3830 in type inference. (thanks to Robert E. Brown)
3831 * bug fix: Reading in symbols with an explicit package name of ""
3832 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3833 * fixed some bugs revealed by Paul Dietz' test suite:
3834 ** NIL is now allowed as a structure slot name.
3835 ** Arbitrary numbers, not just REALs, are allowed in certain
3836 circumstances in LOOP for-as-arithmetic clauses.
3837 ** Multiple class redefinitions before slot access no longer
3838 causes a type error.
3839 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3840 association between the name and a class.
3841 ** Generic functions with non-standard method-combination and over
3842 five methods all of which return constants no longer return NIL
3843 after the first few invocations. (thanks to Gerd Moellmann)
3844 ** CALL-NEXT-METHOD with no arguments now passes the original
3845 values of the arguments, even in the presence of assignment.
3846 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3848 ** DISASSEMBLE works with closures and funcallable instances.
3849 ** ADD-METHOD now returns the generic function, not the new method.
3850 ** FIND-METHOD signals an error if the lengths of the specializers
3851 is incompatible with the generic function, even if the ERRORP
3853 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3854 which its argument is a member.
3855 ** DEFCLASS only redefines the class named by its class-name
3856 argument if that name is the proper name of the class;
3857 otherwise, it creates a new class.
3858 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3859 of the UNBOUND-SLOT condition to the name of the slot.
3860 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3861 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3862 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3863 SLOT-MAKUNBOUND in the specified fashion.
3865 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3866 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3867 cross-compilation host. As a consequence, we can now bootstrap our
3868 way up to SBCL starting with a bare gcc toolchain and human-readable
3869 source code (first the source to CLISP, then the source to SBCL).
3870 * A contributed module containing a partial implementation of the
3871 simple-streams interface has been included. (thanks to Rudi
3873 * A contributed module implementing the RFC1321 Message Digest
3874 Algorithm, known as MD5, has been included.
3875 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3876 no longer has any effect, as the code controlled by this feature
3877 has been deleted. (As far as we know, no-one has ever built using
3878 this feature, and its semantics were confused in any case).
3879 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3880 work on conditions (as required by the ANSI specification),
3881 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3882 expected behaviour on conditions. Users should note, however,
3883 that such behaviour is not required by the ANSI specification,
3884 and so use of this behaviour may render their code unportable.
3885 * fixed some bugs revealed by Paul Dietz' test suite:
3886 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3888 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3889 ** SXHASH on condition objects no longer returns NIL.
3890 ** :ALLOCATION :CLASS slots are better treated; their values are
3891 updated on class redefinition, and initforms inherited from
3892 superclasses are applied.
3893 ** REMOVE-METHOD returns its generic function argument even when
3894 no method was removed.
3895 ** SHARED-INITIALIZE now initializes the values of the requested
3896 slots, including those with :ALLOCATION :CLASS.
3897 ** ALLOCATE-INSTANCE now works on structure classes defined via
3898 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3900 ** SLOT-EXISTS-P now works on conditions, as well as structures
3902 ** MAKE-LOAD-FORM now has the required methods on
3903 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3904 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3905 keyword, and now implements the SLOT-NAMES argument.
3906 ** methods with &OPTIONAL arguments no longer allow too many
3907 arguments to be passed in the call without error.
3908 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3909 option is consistent with the required arguments of the generic
3910 function lambda list.
3911 * bug fix: REQUIRE accepts a string designator. (Thanks to
3913 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3914 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3915 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3916 * bug fix: The compiler now checks for duplicated variables in macro
3918 * bug fix: SETQ on globals returns the correct value.
3919 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3920 not a COMPILER-ERROR (followed by some other strange error on
3921 choosing the CONTINUE restart).
3922 * bug fix: make.sh and friends are now more consistent in the way that
3923 they look for GNU "make".
3925 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3926 * experimental native threads support (on x86 Linux >=2.4 only).
3927 This is not compiled in by default: you need to add :SB-THREAD to
3928 the target features. See the "Beyond ANSI" chapter of the manual
3930 * fix for longstanding nonANSIism: The old distinction between
3931 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3932 The return value from CL:FIND-CLASS is now a CLOS class, and
3933 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3934 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3935 * An interface to the MetaObject Protocol, as described in Kiczales,
3936 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3937 MIT Press, 1991, is available from the SB-MOP package.
3938 * incompatible change: the SB-PCL package should now be considered
3939 a private implementation detail, and no longer a semi-private MOP
3941 * minor incompatible change: due to rearrangement for threads, the
3942 control stack and binding stack are now allocated at arbitrary
3943 addresses instead of being hardcoded per-port. Users affected by
3944 this probably have to be doing advanced things with shared
3945 libraries, and will know who they are.
3946 * minor incompatible change: Previously, all --eval forms used were
3947 processed with READ before any of them were processed with EVAL.
3948 Now each --eval form is processed with both READ and EVAL before
3949 the next --eval form is processed. (Thus package operations like
3950 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3951 work as the user might reasonably expect.)
3952 * minor incompatible change: *STANDARD-INPUT* is now only an
3953 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3955 * minor incompatible change: Y-OR-N-P is now character-oriented,
3956 not line oriented. Also, YES-OR-NO-P now works without errors.
3957 (thanks to Antonio Martinez)
3958 * sb-aclrepl module improvements: an integrated inspector, added
3959 repl features, and a bug fix to :trace command.
3960 * Known functions, which cannot be open coded by the backend, are
3961 considered to be able to check types of their arguments. (fixing
3962 a bug report by Nathan J. Froyd)
3963 * fixed a bug in computing method discriminating functions: It is
3964 now possible to define methods specialized on classes which have
3965 forward-referenced superclasses. (thanks to Gerd Moellmann)
3966 * fixed evaluation order in optional entries (reported by Gilbert
3968 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3969 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3970 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3971 required-by-AMOP NAME argument, as well as CLASS and
3972 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3973 * fixed bug 20: DEFMETHOD can define methods using names that are
3974 not the proper names of classes to designate class specializers.
3975 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3976 Unix file descriptors, instead of blowing up. (thanks to Antonio
3978 * Garbage collection refactoring: user-visible change is that a
3979 call to the GC function during WITHOUT-GCING will not do garbage
3980 collection until the end of the WITHOUT-GCING. If you were doing
3981 this you were probably losing anyway.
3982 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3983 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3984 TYPEP the latter but not the former.
3985 * The compiler issues a full WARNING for calls to undefined functions
3986 with names from the CL package.
3987 * MAP-INTO for a vector destination is open coded. (reported by
3988 Brian Downing on c.l.l)
3989 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3990 documentation string.
3991 * fixed some bugs revealed by Paul Dietz' test suite:
3992 ** COPY-ALIST now signals an error if its argument is a dotted
3994 ** Condition slots are now accessed more correctly in the presence
3995 of multiple initargs for a given slot.
3996 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3997 exclude restarts of the same name associated with a different
3999 ** DEFCLASS of forward-referenced classes with another
4000 forward-referenced class in the superclasses list no longer
4002 ** Condition slots are now initialized once each, not multiple
4003 times. (thanks to Gerd Moellmann)
4004 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4006 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4007 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4008 arguments contain duplicated elements.
4009 ** RESTART-CASE understands local macros.
4010 ** RESTART-CASE associates exactly its own restarts with a condition.
4011 ** ENDP in safe mode checks its argument to be of type LIST.
4012 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4013 in question is unbound.
4014 ** Optimized MAKE-INSTANCE functions no longer cause internal
4015 assertion failures in the presence of duplicate initargs.
4016 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4017 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4018 propagated even in the ctor optimized implementation of
4020 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4022 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4023 * a better implementation of SXHASH on (simple) bit vectors,
4024 measured both in execution speed and in distribution of results
4025 over the positive fixnums, has been installed. Likewise, a better
4026 implementation of EQUAL for simple bit vectors is now available.
4027 * fixed CEILING optimization for a divisor of form 2^k.
4028 * fixed bug 240 (emitting extra style warnings "using the lexical
4029 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4030 by Antonio Martinez)
4031 * fixed SXHASH, giving different results for NIL depending on type
4032 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4033 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4034 variable. (found by Rolf Wester)
4035 * SBCL does not ignore type declarations for special
4036 variables. (reported by rif on c.l.l 2003-03-05)
4037 * some bug fixes in contrib/sb-aclrepl/
4038 * fixed some bugs revealed by Paul Dietz' test suite:
4039 ** a bug in the CONS type specifier, whereby the CAR and CDR
4040 types got intertwined, has been fixed;
4041 ** the type system is now able to reason about the interaction
4042 between INTEGER and RATIO types more completely;
4043 ** APPEND, [N]REVERSE and NRECONC check that those their
4044 arguments, which must be proper lists, are really so;
4045 ** An array specialized to be unable to hold elements has been
4046 implemented, as required -- yes, really -- by ANSI;
4047 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4048 on malformed property lists;
4050 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4051 * incompatible packaging change: in line with Unix convention,
4052 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4053 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4054 * REQUIRE and PROVIDE are now optionally capable of doing something
4055 useful. See the documentation string for REQUIRE.
4056 * infrastructure for a managed SBCL contrib system: contributed
4057 modules in this release include:
4058 ** the ASDF system definition facility;
4059 ** an interface to the BSD Sockets API;
4060 ** an ACL-like convenience interface to the repl;
4061 (thanks to Kevin Rosenberg)
4062 ** an implementation of ROTATE-BYTE, with efficient implementation
4064 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4065 gives a closer approximation to the right answer than previously.
4066 (thanks to Raymond Toy)
4067 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4068 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4069 optional environment arguments, as required by ANSI.
4070 * fixed bugs in other functions taking environment objects, allowing
4071 calls with an explicit NIL environment argument to be compiled
4073 * fixed bug 228: primary return values from
4074 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4075 COMPILE or FUNCTION.
4076 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4077 :TYPE will no longer signal errors on innocuous objects.
4078 * fixed bug 231b: SETQ is better at respecting type declarations in
4079 the lexical environment.
4080 * fixed a bug in DEFCLASS: classes named by symbols with no or
4081 unprintable packages can now be defined.
4082 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4083 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4084 * fixed compiler failure related to checking types of functions.
4085 (reported by Robert E. Brown)
4086 * the compiler is now much more consistent in its error-checking
4087 treatment of bounding index arguments to sequence functions: in
4088 (SAFETY 3) code, errors will be signalled in almost all cases if
4089 invalid sequence bounding indices are passed to functions defined
4090 by ANSI to operate on sequences.
4091 * fixed a bug in the build procedure: documentation of SBCL-specific
4092 packages is now preserved and available in the final Lisp image.
4093 * lifted FDEFINITION lookup out of loops in the implementation of
4094 many list operations. (thanks to Robert E. Brown)
4095 * fixed a bug in the reader: the #n# reader macro now works for
4096 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4097 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4098 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4099 E. Brown and Tony Martinez respectively)
4100 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4101 SLOT-BOUNDP: in particular, it is now able to optimize them much
4102 better, and is now not vulnerable to having packages renamed.
4103 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4104 always called when a slot is not present in an instance. (thanks
4106 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4107 longer signal an error on unreading a character following EOF on
4108 the previous constituent stream. (thanks to Tony Martinez)
4109 * fixed some bugs revealed by Paul Dietz' test suite:
4110 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4111 not just nonnegative fixnums;
4112 ** the logical bit-array operators such as BIT-AND now accept an
4113 explicit NIL for their "opt-arg" argument (to indicate a
4114 freshly-consed result bit-array);
4115 ** ELT now signals an error on an invalid sequence index in safe
4117 ** the type system is now cleverer about negations of numeric
4118 types, and consequently understands the BIGNUM and RATIO types
4120 ** the type system is now cleverer about the interaction between
4121 INTEGER and RATIO types: while bugs still remain, many more
4122 cases are accurately computed;
4123 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4124 if it is in the last clause;
4125 ** CONSTANTLY now correctly returns a side-effect-free function in
4127 ** DECLARE is no longer treated as a special-operator; in
4128 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4129 * incremented fasl file version number due to the change in the
4130 DEFSTRUCT-SLOT-DESCRIPTION structure.
4132 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4133 * minor incompatible change: code processed by the "interpreter" or
4134 EVAL now has a compilation optimization policy of (DEBUG 2)
4135 (changed from (DEBUG 1)) to improve debuggability of interactive
4136 development, and to allow the use of the debug RETURN command in
4138 * an experimental implementation of the RETURN command for the
4139 debugger has been included. (thanks to Frederik Kuivinen)
4140 * fixed bug 62: constraints were not propagated into a loop.
4141 * fixed bug in embedded calls of SORT (reported and investigated by
4143 * fixed some bugs revealed by Paul Dietz' test suite:
4144 ** printing and reading of arrays with some dimensions having
4145 length 0 (thanks to Gerd Moellmann);
4146 ** BOA constructor with &AUX argument without a default value does
4147 not cause a type error;
4148 ** CONSTANTP now returns true for all self-evaluating objects.
4150 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4151 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4152 accessors that are related by inheritance, as specified in the
4153 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4154 Valtteri Vuorikoski)
4155 * The compiler is now able to inline functions that were defined in
4156 a complex lexical environment (e.g. inside a MACROLET).
4157 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4159 * Support for the upcoming FreeBSD-5.0 release has been included.
4160 (thanks to Dag-Erling Smorgrav)
4161 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4162 effect when it is not in a toplevel context.
4163 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4164 stand a better chance of being correct. (thanks to Gerd
4166 * fixed bug in COERCE, which now signals an error on coercing a
4167 rational to a bounded real type which excludes the expected
4169 * The compiler is now able to derive types more accurately from the
4170 COERCE and COMPILE functions.
4171 * fixed bug 223: functional binding is considered to be constant
4172 only for symbols in the CL package.
4173 * fixed bug 231: SETQ did not check the type of a variable being set
4174 (reported by Robert E. Brown)
4175 * A new optimization for MAKE-INSTANCE has been included, fixing
4176 various bugs (including relating to :ALLOCATION :CLASS slots and
4177 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4179 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4180 ** As required by ANSI, LOOP now disallows anonymous collection
4181 clauses such as COLLECT I in conjunction with aggregate boolean
4182 clauses such as THEREIS (= I 1);
4183 ** LOOP now signals an error when any variable is reused in the
4184 same loop (including the potentially useful construct analogous
4185 to WITH A = 1 WITH A = (1+ A);
4186 ** IT is only a special loop symbol within the first clause of a
4187 conditional loop clause;
4188 ** LOOP with a typed iteration variable over a hashtable now
4189 signals a type error iff it should.
4190 * fixed some other bugs revealed by Paul Dietz' test suite:
4191 ** FILE-STREAM now names the class previously known as FD-STREAM;
4192 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4193 argument) no longer signals an error;
4194 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4195 of the slot symbol, rather than using the current package
4196 ((:CONC-NAME "") continues to intern the slot's name in the
4198 * incremented fasl file version number, because of the incompatible
4199 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4200 of the new implementation of DEFINE-COMPILER-MACRO.
4202 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4203 * Support for building SBCL for MIPS platforms running in
4204 little-endian mode has now been checked in, and basic
4205 functionality on said platforms verified.
4206 * minor incompatible change: PCL now records the pathname of a file
4207 in which methods and the like are defined, rather than its
4209 * minor incompatible change: TRUENAME now considers the truename of
4210 a file naming a directory to be the pathname with :DIRECTORY
4211 component indicating that directory.
4212 * minor incompatible change: a NAMED clause in the extended form of
4213 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4214 reason for the previous behaviour is unclear.
4215 * more systematization and improvement of CLOS and MOP conformance
4216 in PCL (thanks to Gerd Moellman and Pierre Mai):
4217 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4219 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4220 primary methods with no specializers;
4221 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4223 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4224 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4225 FORWARD-REFERENCED-CLASSes; error reporting on
4226 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4228 ** SXHASH on CLOS instances now uses a slot internal to the
4229 instance to return different numbers on distinct instances,
4230 while preserving the same return value through invocations of
4232 ** DEFMETHOD signals errors when methods with longer incongruent
4233 lambda lists are added to generic functions;
4234 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4235 CLASS, as specified in AMOP;
4236 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4237 on the order returned by the primary method for classes of
4238 class STANDARD-CLASS;
4239 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4240 * fixed some bugs shown by Paul Dietz' test suite:
4241 ** DOLIST puts its body in TAGBODY;
4242 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4244 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4245 value producing form;
4246 ** if more variables are given to PROGV than values, extra
4247 variables are bound and made to have no value;
4248 ** NSUBSTITUTE on list arguments gets the right answer with
4250 ** ELT signals an error of type TYPE-ERROR when the index argument
4251 is not a valid sequence index;
4252 ** LOOP signals (at macroexpansion time) an error of type
4253 PROGRAM-ERROR when duplicate variable names are found;
4254 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4255 ** FUNCALL of special-operators now cause an error of type
4257 ** PSETQ now works as required in the presence of side-effecting
4258 symbol-macro places;
4259 ** NCONC accepts any object as its last argument;
4260 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4262 ** loop-for-as-package does not require a package to be explicitely
4264 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4266 * fixed bug 166: compiler preserves "there is a way to go"
4267 invariant when deleting code.
4268 * fixed bug 172: macro lambda lists with required arguments after
4269 &REST arguments now cause an error to be signalled. (thanks to
4271 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4272 bug. (thanks to Matthew Danish)
4273 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4275 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4276 arguments are lexically rebound. (thanks to Gerd Moellmann and
4278 * fixed bug 194: error messages are now more informative when there
4279 is no primary method applicable in a call to a generic
4280 function. (thanks to Gerd Moellmann)
4281 * fixed bug in command line argument checking (thanks to Julian
4283 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4284 (thanks to Matthew Danish)
4285 * incremented fasl file version number, because of the
4286 SXHASH-related changes in the layout of CLOS data structures
4288 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4289 * minor incompatible change: The runtime (the Unix executable named
4290 "sbcl") is now much pickier about the .core files it will load.
4291 Essentially it now requires .core files to descend from the same
4292 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4293 as the runtime does. (The intent is to prevent the crashes which
4294 can occur, and which can even be reported as mysterious failures,
4295 when people patch the sources or change the build parameters
4296 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4297 sbcl and .core files.)
4298 * fixed bug: VALUES-LIST is no longer optimized away.
4299 * fixed bug 142: The FFI conversion of C string values to Lisp
4300 string values no longer conses excessively. (thanks to Nathan
4301 Froyd porting Raymond Toy's fix to CMU CL)
4302 * began to systematize and improve MOP conformance in PCL (thanks to
4303 Nathan Froyd, Gerd Moellman and Pierre Mai):
4304 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4306 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4307 ** FINALIZE-INHERITANCE is now called on class finalization;
4308 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4309 argument precedence order.
4310 * fixed bug 202: The compiler no longer fails on functions whose
4311 derived types contradict their declared type.
4312 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4313 so it can be non-toplevel.
4314 * The fasl file version number has changed (because of the new
4315 implementation of DEFMACRO).
4316 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4317 safe code, that any length requirement by their type-specifier
4318 argument is valid. The exceptions to this are described in bug
4320 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4321 functions now check the types of their inputs as required by ANSI.
4322 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4323 introduced symbol is DECLAREd to be SPECIAL.
4324 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4325 * fixed bug: :COUNT argument to sequence functions may be negative
4326 * fixed bug: body of DO-SYMBOLS may contain declarations
4327 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4328 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4329 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4330 symbol macro only once
4331 * fixed printing of call frame when argument list is unavailable
4332 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4333 * compiler no longer signals WARNING on unknown keyword
4336 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4337 * A beta-quality port to the mips architecture running Linux,
4338 based on the old CMUCL backend, has been made. It has been tested
4339 on a big-endian kernel, and works sufficiently well to be able to
4340 rebuild itself; it has not been tested in little-endian mode.
4341 * fixed an inconsistency between gencgc.c and purify.c which made
4342 dumping/loading .core files unreliable
4343 * fixed bug 120a: The compiler now deals correctly with IFs where
4344 the consequent is the same as the alternative, instead of
4345 misderiving the return type. (thanks to Alexey Dejneka)
4346 * fixed bug 113: Logical pathnames are now dumpable (the logical
4347 host is resolved at load-time, throwing an error if it is not
4349 * fixed bug 174: FORMAT's error message is slightly clearer when a
4350 non-printing character is used in a format directive.
4351 * fixed several bugs in compiler checking of type declarations, i.e.
4352 violations of the Python "declarations are assertions" principle
4353 (thanks to Alexey Dejneka)
4354 * fixed several bugs in PCL's error checking (thanks to Gerd
4356 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4358 * fixed bug in compilation of functions as first class values
4359 (thanks to Antonio Martinez-Shotton)
4360 * The compiler's handling TYPE-ERRORs which it can prove will
4361 inevitably happen at runtime has been cleaned up and corrected
4362 in several ways. (thanks to Alexey Dejneka)
4363 * improved argument type checking for various basic arithmetic
4364 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4365 lavished on them in the past that they can be compiled in many
4366 ways in different special cases
4367 * fixed bug 181: compiler checks validity of user supplied type
4369 * cleaned up code flushing in optimization: Function calls which
4370 should signal errors for safety purposes (e.g. which ANSI says
4371 should signal errors when their arguments are of incorrect type)
4372 are no longer optimized away.
4373 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4374 * incremented fasl file version number, because changes in the
4375 implementation of sequence functions like COERCE caused
4376 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4377 in old inline expansions) to become undefined. (Actually these
4378 changes were later undone, so we might very well be binary
4379 compatible with 0.7.7 after all, but leaving the version number
4380 incremented seemed like the simplest and most conservative
4383 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4384 * An alpha-quality port to the parisc architecture running Linux,
4385 based on the old CMUCL backend, has been made. This, even more so
4386 than the other backends, should be considered still a work in
4387 progress; known problems include that the Linux kernel in 64-bit
4388 mode does not propagate the correct sigcontext structure to
4389 userspace, and consequently SBCL on a parisc64 kernel will not
4391 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4392 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4393 suppressed.) Also now that the compiler is looking at declarations
4394 in the environment, it checks optimization declarations as well,
4395 and suppresses inlining when (> DEBUG SPEED).
4396 * More fixes have been made to treatment of floating point exception
4397 treatment and other Unix signals. In particular, floating point
4398 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4399 * The detection and handling of control stack exhaustion (infinite
4400 or very deeply nested recursion) has changed. Stack exhaustion
4401 detection is now done by write-protecting pages at the OS level
4402 and applies at all optimization settings; when found, a
4403 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4404 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4405 be caught using IGNORE-ERRORS.
4406 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4407 correctly when transforming recursive LABELS functions to LETs.
4408 (thanks to Alexey Dejneka)
4409 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4410 that are names of constants or global variables.
4411 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4412 alien routines with docstrings.
4413 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4414 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4416 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4417 (thanks to Eric Marsden)
4418 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4419 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4420 * Bug fix: The SPARC backend can now compile functions involving
4421 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4422 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4423 to a functions expecting a PATHNAME-DESIGNATOR.
4424 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4425 lambda lists. (thanks to Alexey Dejneka)
4426 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4427 functions so that EXPORTing the name of the class doesn't cause
4428 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4429 to Antonio Martinez for reporting this)
4430 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4431 constant-folded without failing an assertion. (thanks to Einar
4432 Floystad Dorum for reporting this)
4433 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4434 types are now dealt with more correctly by the compiler.
4435 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4436 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4437 behaviour analogous to RENAME-FILE. This puts its behaviour more
4438 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4440 * The fasl file version number has changed again. (because of the
4441 bug fix involving the names of PCL MAKE-INSTANCE functions)
4443 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4444 * bug fix: Floating point exceptions are treated much more
4445 consistently on the x86/Linux and PPC/Linux platforms.
4446 * Array initialization with :INITIAL-ELEMENT is now much faster for
4447 cases when the compiler cannot open code the array creation, but
4448 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4449 array accesses have also seen a speed increase.
4450 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4451 specified. (This was at the root of some bad interactions between
4452 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4454 * bug fix: Internal error arguments for undefined functions are now
4455 computed correctly on the PPC/Linux platform.
4456 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4457 Raymond Toy's patch for CMU CL)
4458 * Support for the Solaris 9 operating environment has been included
4459 (thanks to Daniel Merritt)
4460 * A very ugly but hopefully complete draft of the missing FFI chapter
4461 of the manual has been created by reformatting the corresponding
4462 CMU CL manual chapter into (currently very ugly and incoherent)
4463 DocBook and bringing it up to date for SBCL behavior. Thus, the
4464 manual is now essentially complete, at least by my extreme
4465 once-and-only-once standards, whereby it's acceptable to refer to
4466 the doc strings of SB-EXT functions as the primary documentation.
4467 * The fasl file version number has changed again, due to cleanup of
4468 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4469 is no longer a static symbol.)
4471 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4472 * SBCL now builds with OpenMCL (version 0.12) as the
4473 cross-compilation host; also, more progress has been made toward
4474 bootstrapping under CLISP.
4475 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4477 * bug 158 fixed: The compiler can now deal with integer loop
4478 increments different from 1; fixing this turned out also to fix
4480 * bug 169 fixed: no more bogus warnings about using lexical bindings
4481 despite the presence of perfectly good SPECIAL declarations (thanks
4482 to David Lichteblau)
4483 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4484 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4485 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4487 * bug 180 fixed: Method combination specifications no longer ignore
4488 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4489 * bug fix: Structure type predicate functions now check their argument
4490 count as they should.
4491 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4492 correctly. (thanks to Pierre Mai)
4493 * minor incompatible change: The --noprogrammer option is deprecated
4494 in favor of the new --disable-debugger option, which is very similar.
4495 (The major difference is that it takes effect at a slightly different
4496 time at startup, causing handling of errors in --sysinit and
4497 --userinit files will be affected differently.) The
4498 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4499 been added to allow this functionality to be controlled from ordinary
4500 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4501 maintainers, who might want to run non-interactive scripts to
4502 build SBCL cores which will later be used interactively.)
4503 * minor incompatible change: The LOAD function no longer, when given
4504 a wild pathname to load, loads all files matching that pathname.
4505 Instead, an error of type FILE-ERROR is signalled.
4507 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4508 * bug 147 fixed: The compiler preserves its block link/count
4509 invariants more correctly now so that it doesn't crash. (thanks
4511 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4513 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4514 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4515 no-value-for-this-character as NIL (as specified by ANSI).
4516 * HOST-NAMESTRING on physical pathnames now returns a string that is
4517 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4518 (thanks to Christophe Rhodes)
4519 * The Alpha port handles icache flushing more correctly. (thanks to
4521 * More progress has been made toward bootstrapping under CLISP. (thanks
4522 to Christophe Rhodes)
4523 * The fasl file format has changed again, because dynamic loading
4524 on OpenBSD (which has non-ELF object files) motivated some cleanups
4525 in the way that foreign symbols are transformed and passed around.
4526 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4527 is no longer treated as whitespace by the reader, but instead as
4528 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4529 |A
\7fB|, instead of A as it used to.
4531 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4532 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4533 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4534 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4535 this as of 0.7.1.45, but was left out of the previous news section
4536 (thanks to Dan Barlow)
4537 * SBCL now runs on the Solaris operating system on SPARC architectures
4538 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4539 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4540 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4541 * SPARC backend cleanups, allowing builds of cores optimized for V8
4542 and V9 SPARCS, and also emission of code targeted to a particular
4543 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4545 * SBCL is closer to bootstrapping under CLISP, thanks to various
4546 fixes by Christophe Rhodes.
4547 * The fasl file format has changed again, to allow the compiler's
4548 INFO database to support symbol macros.
4549 * The user manual (in doc/) is formatted into HTML more nicely.
4550 (thanks to coreythomas)
4551 * The system is smarter about SUBTYPEP relationships, especially
4552 those involving NOT types (including types such as ATOM which are
4553 represented internally using NOT types). Thus SUBTYPEP is less
4554 likely to return (VALUES NIL NIL) in general, and in particular
4555 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4557 * The fasl file format has changed again, because the internal
4558 representation of types now includes a new slot to support the new
4559 SUBTYPEP-of-NOT-types logic.
4560 * (not a change in the main branch of SBCL, but a related prototype
4561 which can hopefully be merged into the main branch of SBCL in the
4562 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4563 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4564 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4565 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4566 dispatch macro character combinations. (thanks to Alexey Dejneka)
4567 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4568 that superficially look like logical namestrings correctly.
4569 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4571 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4572 default supplied-p) for &optional and &key arguments. (thanks to
4575 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4576 * incompatible change: The compiler is now less aggressive about
4577 tail call optimization, doing it only when (> SPACE DEBUG) or
4578 (> SPEED DEBUG). (This is an incompatible change because there are
4579 programs which relied on the old CMU-CL-style behavior to optimize
4580 away their unbounded recursion which will now die of stack overflow.)
4581 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4582 for non-GENCGC systems has been increased to 20M (since that
4583 seems much closer to the likely performance optimum for modern
4584 systems than the old 4M value was)
4585 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4586 and *DEBUG-PRINT-LEVEL*
4587 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4588 of CMU CL's support for SPARC, and various endianness and other
4589 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4590 * new syntactic sugar for the Unix command line: --load foo.bar is now
4591 an alternate notation for --eval '(load "foo.bar")'.
4593 ** The system now detects stack overflow and handles it gracefully,
4594 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4595 optimization settings. (This is a good thing in general, and
4596 its introduction in this version should be particularly timely
4597 for anyone whose code fails because of suppression of tail
4599 ** The system now hunts for the C variable "environ" in a more
4600 devious way, to avoid segfaults when the C library version differs
4601 between compile time and run time. (thanks to Christophe Rhodes)
4602 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4603 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4604 ** The compiler no longer issues bogus style warnings for undefined
4605 classes in the same source file as the DEFCLASSes which defined
4606 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4608 ** fixes in CONDITION class precedence list for undefined function
4609 errors (thanks to Alexei Dejneka)
4610 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4611 correctly. (thanks to Dan Barlow)
4612 ** portability fixes aiming at bootstrapping under CLISP (thanks
4613 to Dave McDonald and Christophe Rhodes)
4614 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4615 ** fixes in type translation and and type inference (thanks to
4617 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4618 ** various fixes in the new ports (thanks to Dan Barlow)
4619 * several changes related to debugging:
4620 ** suppression of tail recursion, as noted above
4621 ** stack overflow detection, as noted above
4622 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4623 is now the default. (For some time encapsulation has been more
4624 reliable than the breakpoint-based :ENCAPSULATE NIL
4625 implementation, at least on X86 systems; and I just noticed that
4626 encapsulation also seems closer to the spirit of the ANSI
4629 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4631 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4632 up properly again. (There was a packaging bug in 0.7.0 which
4633 left their definitions in SB-SYS::LOAD-FOREIGN and
4634 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4635 vital for most things which interface to C-level interfaces,
4636 like extensions working with sockets or databases or
4637 Perl-compatible regexes or whatever, and the need to fix
4638 this bug is the main reason that 0.7.1 was released so
4640 ** DEFGENERIC is now choosier about the methods it redefines, so that
4641 reLOADing a previously-LOADed file containing DEFGENERICs does
4642 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4643 cycle now works as it should. (thanks to Alexey Dejneka)
4644 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4645 fixed by Christophe Rhodes. (He actually submitted this patch
4646 months ago, and I delayed until after 0.7.0.)
4647 ** Bug 111 (internal compiler confusion about runtime checks on
4648 FUNCTION types) was fixed by Alexey Dejneka.
4649 * Some internal cleanups (getting rid of variables which aren't
4650 needed now that the byte interpreter is gone) caused the fasl
4651 file format number to change again.
4653 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4654 * major incompatible change: The default fasl file extension, i.e. the
4655 default extension for files produced by COMPILE-FILE, has changed
4656 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4658 ** There are many changes in the implementation of the compiler.
4659 SBCL is now essentially a compiler-only implementation of ANSI
4660 Common Lisp. EVAL still "interprets" a few special cases, but
4661 almost all the interesting cases are handled by creating
4662 a LAMBDA expression, calling COMPILE on it, then calling
4663 FUNCALL on the result.
4664 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4665 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4666 Since the code is newer, there might still be some new bugs
4667 (though not as many as before Martin Atzmueller's fixes:-). But
4668 the new code is substantially simpler and clearer, and hopefully
4669 any remaining bugs will be simpler, less fundamental, and more
4670 fixable then the bugs in the old code.
4671 ** The revised compiler is still a little unsteady on its feet.
4673 *** The debugging information it produces (particularly the names
4674 of FUNCTION objects) is sometimes much less useful than what
4675 the old compiler produced.
4676 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4677 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4678 within a MACROLET) has been temporarily weakened.
4679 ** There are new compiler optimizations for various functions:
4680 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4681 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4682 *** the math functions TRUNCATE, FLOOR, and CEILING
4683 *** the function-of-all-trades COERCE
4684 Mostly these should be transparent, but there's one
4685 potentially-annoying problem (bug 117): when the compiler
4686 inline-expands a function and does type analysis on the result,
4687 it can create control paths which have type mismatches, and
4688 when it can't prove that those control paths aren't taken,
4689 it will issue WARNINGs about the type mismatches. This is
4690 a particular problem in practice for the new sequence functions.
4691 It's not clear how this should be fixed, and for now, a
4692 workaround is given in the entry for 117 in the BUGS file.
4693 ** (Because of the interaction between the two previous items --
4694 occasional inlining problems and new inline expansions -- some
4695 of the new sequence function optimizations won't really kick in
4696 completely until debugging information, and then inlining, are
4697 straightened out in some future version.)
4698 * minor incompatible changes:
4699 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4700 DIRECTORY no longer implicitly promotes NIL slots of its
4701 pathname argument to :WILD. In particular, when you ask for the
4702 contents of a directory (which you used to be able to do without
4703 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4704 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4705 ** changes in behavior that ANSI explicitly defines to be
4706 implementation dependent:
4707 *** The new compiler-only implementation still conforms with ANSI,
4708 but acts a little different than before. Besides the obvious
4709 changes in performance tradeoffs (that the cost per form passed
4710 to EVAL has gone up, and the cost per form executed by EVAL
4711 has gone down), the behavior of the system changes a little
4712 because there are no longer any interpreted function objects.
4713 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4714 e.g. doing COMPILE on the output of interactive DEFUN is
4716 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4718 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4719 has changed from (:CL) to NIL.
4720 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4721 e.g. #\Newline and #\Tab, don't have names specified in the
4722 ANSI Common Lisp standard, is now based on their ASCII symbolic
4723 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4724 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4725 are no longer used for output.
4726 ** changes in internal implementation constants:
4727 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4728 4 million. (If your application spends a lot of time GCing and
4729 you have a lot of RAM, you might want to experiment with
4730 increasing it even more.)
4731 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4732 However, almost all old code should still continue to work without
4733 immediate update, as SB-C-CALL is now a (deprecated) nickname
4735 ** Old operator names in the style DEF-FOO are now deprecated in
4736 favor of new corresponding names DEFINE-FOO, for consistency with
4737 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4738 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4739 internal symbols, but a few supported extensions like
4740 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4741 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4742 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4743 etc. as you get deeper into recursive calls to the debugger
4744 command loop, instead of the old "5]", "5]]", "5]]]"
4745 sequence. (I was motivated to do this when squabbles between
4746 ILISP and SBCL left me very deeply nested in the debugger. In the
4747 short term, this change will probably provoke more ILISP/SBCL
4748 squabbles, but hopefully it will be an improvement in the long run.)
4749 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4750 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4751 function, since declaiming return types involving aliens is
4752 (1) annoyingly messy to do by hand and (2) vital to efficient
4753 compilation of code which calls such functions.
4754 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4755 longer reexported by the SB-EXT package. They're solely useful
4756 for alien code, so it seems more logical that you should get
4757 them from the SB-ALIEN package, not in SB-EXT.
4758 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4759 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4760 features. Instead, the code that they used to control is always
4761 built into the system.
4762 * many other bug fixes
4763 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4764 advantage of the new EVAL-WHEN stuff and to clean them up in
4765 general, and they are now more ANSI-compliant in a number of
4766 ways. Martin Atzmueller is responsible for a lot of this.
4767 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4769 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4770 *** correct ERROR type for various file operations
4771 *** some fixes for Lisp streams
4772 *** DEFMETHOD syntax checking
4773 *** changing old weird representation of debug information as
4774 strings (which, among their other deficiencies, don't transform
4775 correctly when you rename packages, and don't change their
4776 print representation when you change things like *PACKAGE*
4777 and *PRINT-LENGTH*) to symbols and lists of symbols
4778 He also made several improvements and fixed several bugs in DESCRIBE.
4779 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4781 *** misbehavior of WRITE-STRING/WRITE-LINE
4782 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4783 and several other LOOP problems as well
4784 *** DIRECTORY when similar filenames are present
4785 *** DEFGENERIC with :METHOD options
4786 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4787 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4788 *** argument ordering in FIND with :TEST option
4789 *** mishandled package designator argument in APROPOS-LIST
4790 *** various problems in the backquote readmacro
4791 *** a bug in APROPOS
4792 *** probably some others that I'm not describing very well here,
4793 since the CVS log documents them by reference to sbcl-devel
4794 messages, and the SourceForge archives aren't working well.:-(
4795 ** Dan Barlow improved the Alpha port (and is making progress on the
4796 PPC port, for those of you who think different).
4797 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4798 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4799 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4800 continues to work on the SPARC port (for those of you in a position
4801 to look down upon our little PC-compatible boxes from a great height).
4802 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4803 and uses that copy, rather than the current dynamic value, when
4804 it's trying to decide whether to truncate output. Thus e.g.
4805 (let ((*print-lines* 50))
4806 (pprint-logical-block (stream nil)
4808 (let ((*print-lines* 8))
4809 (print (aref possiblybigthings i) stream)))))
4810 should now truncate the logical block only at 50 lines, instead of
4811 often truncating it at 8 lines, as it did before.
4812 * The doc/cmucl/ directory, containing old CMU CL documentation
4813 from the time of the fork, is no longer part of the base system.
4814 SourceForge has shut down its anonymous FTP service, and with it
4815 my original plan for distributing the old CMU CL documentation
4816 there. For now, if you need these files you can download an old
4817 SBCL source release and extract them from it.
4818 * The fasl file version number changed again, for dozens of reasons,
4819 some of which are apparent above.
4821 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4822 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4823 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4824 patch, so that DISASSEMBLE output is much nicer.
4825 * The code in the SB-PROFILE package now seems reasonably stable.
4826 I still haven't decided what the final interface should look like
4827 (I'd like PROFILE to interact cleanly with TRACE, since both
4828 facilities use function encapsulation) but if you have a need
4829 for profiling now, you can probably use it successfully with
4830 the current CMU-CL-style interface.
4831 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4832 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4833 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4834 link now returns the dangling link itself, and for similar
4835 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4836 link itself. (In these cases the old code signalled an error and
4837 looped endlessly, respectively.) Thus, DIRECTORY now works even
4838 in the presence of dangling and cyclic symbolic links.
4839 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4840 is now a supported extension again, since the consensus on
4841 sbcl-devel was that it can be useful for ordinary development
4842 work, not just for debugging SBCL itself.
4843 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4844 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4845 that currently-defined functions might be redefined later with
4846 different return types.
4847 * Hash tables can be printed readably, as inspired by CMU CL code
4848 of Eric Marsden and SBCL code of Martin Atzmueller.
4849 * better error handling in CLOS method combination, thanks to
4850 Martin Atzmueller porting Pierre Mai's CMU CL patches
4851 * more overflow fixes for >16Mbyte I/O buffers
4852 * A bug in READ has been fixed, so that now a single Ctrl-D
4853 character suffices to cause end-of-file on character streams.
4854 In particular, now you only need one Ctrl-D at the command
4855 line (not two) to exit SBCL.
4856 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4858 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4859 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4860 does the right thing.
4861 * The implementation of some type tests, especially for CONDITION
4862 types, is now tidier and maybe faster, due to CMU CL code
4863 originally by Douglas Crosher, ported by Martin Atzmueller.
4864 * Some math functions have been fixed, and there are new
4865 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4866 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4867 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4868 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4869 likely to be built into sbcl-0.7.0.)
4870 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4871 CL, ported to SBCL by Martin Atzmueller)
4872 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4873 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4874 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4875 * There's a new slam.sh hack to shorten the edit/compile/debug
4876 cycle for low-level changes to SBCL itself, and a new
4877 :SB-AFTER-XC-CORE target feature to control the generation of
4878 the after-xc.core file needed by slam.sh.
4879 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4880 COMPILE-FILE is no longer supported, so that now every function
4881 gets an entry point, so that block compilation looks a little
4882 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4883 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4884 returns the number of bytes consed since the system started,
4885 rather than the number consed since the first time the function
4886 was called. (The new definition parallels ANSI functions like
4887 CL:GET-INTERNAL-RUN-TIME.)
4888 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4889 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4890 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4891 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4892 * Fasl file version numbers are now independent of the target CPU,
4893 since historically most system changes which required version
4894 number changes have affected all CPUs equally. Similarly,
4895 the byte fasl file version is now equal to the ordinary
4898 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4899 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4900 is no longer recognized. I apologize for this, because it was
4901 listed in SB-EXT as a supported extension, but I found that
4902 its existing behavior was poorly specified, as well as incorrectly
4903 specified, and it looked like too much of a mess to straighten it
4904 out. I have enough on my hands trying to get ANSI stuff to work..
4905 * many patches ported from CMU CL by Martin Atzmueller, with
4906 half a dozen bug fixes in pretty-printing and the debugger, and
4907 half a dozen others elsewhere
4908 * fixed bug 13: Floating point infinities are now supported again.
4909 They might still be a little bit flaky, but thanks to bug reports
4910 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4911 as flaky as they were.
4912 * The --noprogrammer command line option is now supported. (Its
4913 behavior is slightly different in detail from what the old man
4914 page claimed it would do, but it's still appropriate under the
4915 same circumstances that the man page talks about.)
4916 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4917 are now supported, and enabled by default. Thus, the compiler can
4918 handle many floating point and complex operations much less
4919 inefficiently. (Thus e.g. you can implement a complex FFT
4921 * The compiler now detects type mismatches between DECLAIM FTYPE
4922 and DEFUN better, and implements CHECK-TYPE more correctly, and
4923 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4924 thanks to patches from Martin Atzmueller.
4925 * various fixes to make the cross-compiler more portable to
4926 ANSI-conforming-but-different cross-compilation hosts (notably
4927 Lispworks for Windows, following bug reports from Arthur Lemmens)
4928 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4929 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4930 fixed thanks to Pierre Mai's CMU CL patches.
4931 * fixes to keep the system from overflowing internal counters when
4932 it tries to use i/o buffers larger than 16M bytes
4933 * fixed bug 45a: Various internal functions required to support
4934 complex special functions have been merged from CMU CL sources.
4935 (When I was first setting up SBCL, I misunderstood a compile-time
4936 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4937 * improved support for type intersection and union, fixing bug 12
4938 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4939 more obscure bugs as well
4940 * some steps toward byte-compiling non-performance-critical
4941 parts of the system, courtesy of patches from Martin Atzmueller
4942 * Christophe Rhodes has made some debian packages of sbcl at
4943 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4944 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4945 stable, but are nonetheless usable. When he's ready, I'd be happy
4946 to add them to the SourceForge "File Releases" section. (And if
4947 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4948 * new fasl file format version number (because of changes in
4949 internal representation of (OR ..) types to accommodate the new
4950 support for (AND ..) types, among other things)
4952 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4953 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4955 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4957 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4958 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4959 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4960 * DESCRIBE now works on structure objects again.
4961 * Most function call argument type mismatches are now handled as
4962 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4963 know whether the function will be redefined before the call is
4964 executed. (The compiler could flag local calls with full WARNINGs,
4965 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4966 it doesn't keep track of enough information to know whether calls
4967 are local in this sense.)
4968 * Compiler output is now more verbose, with messages truncated
4969 later than before. (There should be some supported way for users
4970 to override the default verbosity, but I haven't decided how to
4971 provide it yet, so this behavior is still controlled by the internal
4972 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4973 src/compiler/ir1util.lisp.)
4974 * Fasl file format version numbers have increased again, because
4975 support for the Gray streams extension changes the layout of the
4976 system's STREAM objects.
4977 * The Gray subclassable streams extension now works, thanks to a
4978 patch from Martin Atzmueller.
4979 * The full LOAD-FOREIGN extension (not just the primitive
4980 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4981 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4982 but like most other programs, it defaults to copying the Unix
4983 environment from the original process instead of starting the
4984 new process in an empty environment.
4985 * Extensions which manipulate the Unix environment now support
4986 an :ENVIRONMENT keyword option which doesn't smash case or
4987 do other bad things. The CMU-CL-style :ENV option is retained
4988 for porting convenience.
4989 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4990 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4992 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4994 * A patch from Martin Atzmueller seems to have solved the SIGINT
4995 problem, and as far as we know, signal-handling now works cleanly.
4996 (If you find any new bugs, please report them!)
4997 * The system no longer defaults Lisp source file names to types
4998 ".l", ".cl", or ".lsp", but only to ".lisp".
4999 * The compiler no longer uses special default file extensions for
5000 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5001 seems to expect a single default extension for all compiled code,
5002 and there's no compelling reason to try to stretch the standard
5003 to allow two different extensions.) Instead, byte-compiled files
5004 default to the same extension as native-compiled files.
5005 * Fasl file format version numbers have increased again, because
5006 a rearrangement of internal implementation packages made some
5007 dumped symbols in old fasl files unreadable in new cores.
5008 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5009 many fewer weird special cases.
5010 * Bug #17 (differing COMPILE-FILE behavior between logical and
5011 physical pathnames) has been fixed, and some related misbehavior too,
5012 thanks to a patch from Martin Atzmueller.
5013 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5014 by Tim Moore, ported to SBCL by Martin Atzmueller.
5015 * Martin Atzmueller fixed several filesystem-related problems,
5016 including bug #36, in part by porting CMU CL patches, which were
5017 written in part by Paul Werkowski.
5018 * More compiler warnings in src/runtime/ are gone, thanks to
5019 more patches from Martin Atzmueller.
5020 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5023 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5025 * DESCRIBE now works on CONDITION objects.
5026 * The debugger now handles errors which arise when trying to print
5027 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5029 * The build system now uses an additional file, customize-target-features.lisp,
5030 to allow local modifications to the target *FEATURES* list. (The point of
5031 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5032 debugging features enabled, without having to worry about propagating it
5033 into everyone's system when I do a "cvs update".) When no
5034 customize-target-features.lisp file exists, the target *FEATURES* list
5035 should be constructed the same way as before.
5036 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5037 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5038 warn about behavior which is undefined under the ANSI spec. Note: This
5039 is specified by ANSI, but it's not very popular with programmers.
5040 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5041 macro in the SBCL sources for an example of a workaround which you
5042 might use to make portable ANSI-standard code which does what you want.
5043 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5044 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5045 when it's used as a non-toplevel form. (This is required in order
5046 to implement the DEFCONSTANT-EQX macro.)
5047 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5048 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5049 funny things, due to bugs in the implementation of EVAL-WHEN
5050 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5051 non-toplevel DEFCONSTANTs are uncommon.)
5052 * The core file version number and fasl file version number have been
5053 incremented, because the old noncompliant DEFCONSTANT behavior involved
5054 calling functions which no longer exist, and because I also took the
5055 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5056 * fixed bug 1 (error handling before read-eval-print loop starts), and
5057 redid debugger restarts and related debugger commands somewhat while
5059 ** The QUIT debugger command is gone, since it did something
5060 rather different than the SB-EXT:QUIT command, and since it never
5061 worked properly outside the main toplevel read/eval/print loop.
5062 Invoking the new TOPLEVEL restart provides the same functionality.
5063 ** The GO debugger command is also gone, since you can just invoke
5064 the CONTINUE restart directly instead.
5065 ** The TOP debugger command is also gone, since it's redundant with the
5066 FRAME 0 command, and since it interfered with abbreviations for the
5068 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5070 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5071 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5072 some porting work by Martin Atzmueller)
5073 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5074 with a boatload of patches which he ported to SBCL. Now that those
5076 ** The system tries to make sure that its low-priority messages
5077 are prefixed by semicolons, to help people who like to use
5078 syntax highlighting in their ILISP buffer. (This patch
5079 was originally due to Raymond Toy.)
5080 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5081 patches originally written by Raymond Toy.
5082 ** The compiler understands coercion between single-value and
5083 multiple-VALUES type expressions better, getting rid of some very
5084 weird behavior, thanks to patches originally by Robert MacLachlan
5085 and Douglas Crosher.
5086 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5087 lambda lists, thanks to a patch originally by Pierre Mai.
5088 ** The system no longer bogusly warns about "abbreviated type
5090 ** The compiler gets less confused by inlining and RETURN-FROM,
5091 thanks to some patches originally by Tim Moore.
5092 ** The system no longer hangs when dumping circular lists to fasl
5093 files, thanks to a patch originally from Douglas Crosher.
5094 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5095 undefined function error.
5096 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5097 in structure slot initforms) for now, documented workaround instead:-|
5098 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5099 * fixed bug 5: added stubs for various Gray stream functions called
5100 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5101 installed, at least appropriate type errors are generated
5102 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5103 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5104 consistently in DEFMETHOD forms.
5105 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5106 it doesn't seem to affect SBCL after all
5107 * The C runtime system now builds with better optimization and many
5108 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5110 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5112 * The system is now under CVS at SourceForge (instead of the
5113 CVS repository on my home machine).
5114 * The new signal handling code has been tweaked to treat register
5115 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5116 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5117 downstream, e.g. in debug-int.lisp, has implicit dependencies
5118 on the unsignedness of integer representation of machine words,
5119 and that caused the system to bomb out with infinite regress
5120 when trying to recover from type errors involving signed values,
5121 e.g. (BUTLAST '(1 2 3) -1).)
5122 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5123 (This was one of the bugs Peter Van Eynde reported back in July.)
5124 * The system now uses code inspired by Colin Walters' O(N)
5125 implementation of MAP (from the cmucl-imp@cons.org mailing
5126 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5127 inline the MAP operation, and there is more than one
5128 sequence argument to the MAP call (so that it can't just
5129 do ETYPECASE once and for all based on the type of the
5130 single sequence argument). (The old non-inline implementation
5131 of the general M-argument sequence-of-length-N case required
5132 O(M*N*N) time when any of the sequence arguments were LISTs.)
5133 * The QUIT :UNIX-CODE keyword argument has been renamed to
5134 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5135 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5137 * Raymond Wiker's patches to port dynamic loading from Linux to
5138 FreeBSD have been added.
5139 * The BUGS file is now more nearly up to date, thanks in large part
5140 to Martin Atzmueller's review of it.
5141 * The debugger now flushes standard output streams before it begins
5142 its output ("debugger invoked" and so forth).
5143 * The core version number and fasl file version number have both
5144 been incremented, because of incompatible changes in the layout
5146 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5147 used to not be called for a saved Lisp image.)
5148 * Martin Atzmueller's version of a patch to fix a compiler crash,
5149 as posted on sbcl-devel 13 September 2000, has been installed.
5150 * Instead of installing Martin Atzmueller's patch for the
5151 compiler transform for SUBSEQ, I deleted the compiler transform,
5152 and transforms for some similar consing operations.
5153 * A bug in signal handling which kept TRACE from working on OpenBSD
5155 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5156 away by constant folding
5157 * The system now defines its address space constants in one place
5158 (in the Lisp sources), and propagates them automatically elsewhere
5159 (through GENESIS and the sbcl.h file). Therefore, patching the
5160 address map is less unnecessarily tedious and error-prone. The
5161 Lisp names of address space constants have also been systematized.
5162 * CVS tags like dollar-Header-dollar have been removed from
5163 the sources, because they have never saved me trouble and
5164 they've been source of trouble working with patches and other
5165 diff-related operations.
5166 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5167 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5169 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5171 * The system has been ported to OpenBSD.
5172 * The system now compiles with a simple "sh make.sh" on the systems
5173 that it's supported on. I.e., now you no longer need to tweak
5174 text in the target-features.lisp-expr and symlinks in src/runtime/
5175 by hand, the make.sh takes care of it for you.
5176 * The system is no longer so grossly inefficient when compiling code
5177 involving vectors implemented as general (not simple) vectors (VECTOR T),
5178 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5179 which dares to use the various sequence functions on non-simple
5180 vectors, takes less of a performance hit.
5181 * There is now a primitive type predicate VECTOR-T-P
5182 to test for the (VECTOR T) type, so that e.g.
5183 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5184 can now be compiled with some semblance of efficiency. (The old code
5185 turned the type declaration into a full call to %TYPEP at runtime!)
5186 * AREF on (VECTOR T) is still not fast, since it's still compiled
5187 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5188 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5189 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5190 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5191 without making full calls to SUBTYPEP at runtime.
5192 (Some analogous efficiency issues for non-simple vectors specialized to
5193 element types other than T, or for non-simple multidimensional arrays,
5194 have not been addressed. They could almost certainly be handled the
5195 same way if anyone is motivated to do so.)
5196 * The changes in array handling break binary compatibility, so
5197 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5198 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5199 instead of (VALUES T T).
5200 * By following the instructions that Dan Barlow posted to sbcl-devel
5201 on 2 July 2000, I was able to enable primitive dynamic object
5202 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5203 functionality is not implemented (since it calls ld to resolve
5204 library references automatically, requiring RUN-PROGRAM for its
5205 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5206 try to resolve library references) is now supported.
5207 * The system now flushes the standard output streams when it terminates,
5208 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5209 them at several other probably-convenient times, e.g. in each pass of
5210 the toplevel read-eval-print loop, and after evaluating a form given
5211 as an "--eval" command-line option. (These changes were motivated by a
5212 discussion of stream flushing issues on cmucl-imp in August 2000.)
5213 * The source transform for TYPEP of array types no longer assumes
5214 that an array whose element type is a not-yet-defined type
5215 is implemented as an array of T, but instead punts, so that the
5216 type will be interpreted at runtime.
5217 * There is now some support for cross-compiling in make.sh: each of
5218 the phases of make.sh has its own script. (This should be transparent
5219 to people doing ordinary, non-cross-compile builds.)
5220 * Since my laptop doesn't have hundreds of megabytes of memory like
5221 my desktop machine, I became more motivated to do some items on
5222 my to-do list in order to reduce the size of the system a little:
5223 ** Arrange for various needed-only-at-cold-init things to be
5224 uninterned after cold init. To support this, those things have
5225 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5226 symbols with such names are now uninterned after cold init).
5227 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5228 fasl files for cold load.
5229 ** Remove the old compiler structure pooling code (which used to
5230 be conditional on the target feature :SB-ALLOC) completely.
5231 ** Redo the representation of some data in cold init to be more compact.
5232 (I also looked into supporting byte compiled code at bootstrap time,
5233 which would probably reduce the size of the system a lot, but that
5234 looked too complicated, so I punted for now.)
5235 * The maximum signal nesting depth in the src/runtime/ support code has
5236 been reduced from 4096 to 256. (I don't know any reason for the very
5237 large old value. If the new smaller value turns out to break something,
5238 I'll probably just bump it back up.)
5239 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5241 * Many, many bugs reported by Peter Van Eynde have been added to
5242 the BUGS list; some have even been fixed.
5243 * While enabling dynamic object file loading, I tried to make the
5244 code easier to understand, renaming various functions and variables
5245 with less ambiguous names, and changing some function calling
5246 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5247 * While trying to figure out how to do the OpenBSD port, I tried to
5248 clean up some of the code in src/runtime/. In particular, I dropped
5249 support for non-POSIX signal handling, added various comments,
5250 tweaked the code to reduce the number of compilation warnings, and
5251 renamed some files to increase consistency.
5252 * To support the new automatic configuration functionality in make.sh,
5253 the source file target-features.lisp-expr has been replaced with the
5254 source file base-target-features.lisp-expr and the machine-generated
5255 file local-target-features.lisp-expr.
5256 * fixed a stupid quoting error in make.sh so that using CMU CL
5257 "lisp -batch" as cross-compilation host works again
5259 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5261 * DESCRIBE no longer tries to call itself recursively to describe
5262 bound/fbound values, so that it no longer fails on symbols which are
5263 bound to themselves (like keywords, T, and NIL).
5264 * DESCRIBE now works on generic functions.
5265 * The printer now prints less-screwed-up representations of closures
5266 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5267 * A private symbol is used instead of the :EMPTY keyword previously
5268 used to mark empty slots in hash tables. Thus
5269 (DEFVAR *HT* (MAKE-HASH-TABLE))
5270 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5271 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5272 now does what ANSI says that it should. (You can still get
5273 similar noncompliant behavior if bang on the hash table
5274 implementation with all the symbols you get back from
5275 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5276 This breaks binary compatibility, since tests for equality to
5277 :EMPTY are wired into things like the macroexpansion of
5278 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5280 * There's now a minimal placeholder implementation for CL:STEP,
5281 as required by ANSI.
5282 * An obscure bug in the interaction of the normal compiler, the byte
5283 compiler, inlining, and structure predicates has been patched
5284 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5285 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5287 * Missing ordinary arguments in a macro call are now detected even
5288 when the macro lambda list contains &KEY or &REST.
5289 * The debugger no longer complains about encountering the top of the
5290 stack when you type "FRAME 0" to explicitly instruct it to go to
5291 the top of the stack. And it now prints the frame you request even
5292 if it's the current frame (instead of saying "You are here.").
5293 * As specified by ANSI, the system now always prints keywords
5294 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5296 * The default initial SIZE of HASH-TABLEs is now smaller.
5297 * Type information from CLOS class dispatch is now propagated
5298 into DEFMETHOD bodies, so that e.g.
5299 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5301 is now basically equivalent to
5302 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5303 (DECLARE (TYPE SINGLE-FLOAT X))
5305 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5306 operation, without having to do run-time type dispatch.
5307 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5308 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5309 * Since I don't seem to be making big file reorganizations very often
5310 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5311 is overflowing my ability to conveniently back them up), I've finally
5312 checked the system into CVS. (The CVS repository is on my home system,
5313 not at SourceForge -- putting it on SourceForge might come later.)
5314 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5315 high-level GC-NOTIFY-FOO functions send their output. (There's
5316 still very little control of where low-level verbose GC functions
5317 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5318 less than it used to -- the GC-NOTIFY-FOO functions are now under
5319 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5320 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5321 in only one place in the source code, and propagates it automatically
5322 everywhere that it's needed. Thus e.g. when I bump the version from
5323 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5324 * The C source files now include boilerplate legalese and documentation
5325 at the head of each file (just as the Lisp source files already did).
5326 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5327 to his page will be replaced with a link to his new CLiki service.
5329 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5331 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5332 * The build process now looks for GNU make under the default name "gmake",
5333 instead of "make" as it used to. If GNU make is not available as "gmake"
5334 on your system, you can change this default behavior by setting the
5335 GNUMAKE environment variable.
5336 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5337 can build without error under CMU CL.
5339 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5341 * There is now a partial SBCL user manual (with some new text and some
5342 text cribbed from the CMU CL manual).
5343 * The beginnings of a profiler have been added (starting with the
5344 CMU CL profiler and simplifying and cleaning up). Eventually the
5345 main interface should be through the TRACE macro, but for now,
5346 it's still accessed through vaguely CMU-CL-style functions and macros
5347 exported from the package SB-PROFILE.
5348 * Some problems left over from porting CMU CL to the new
5349 cross-compilation bootstrap process have been cleaned up:
5350 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5351 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5352 part when getting rid of the compiler *BACKEND* stuff.)
5353 ** The value of *NULL-TYPE* was screwed up, because it was
5354 being initialized before the type system knew the final
5355 definition of the 'NULL type. This screwed up several key
5356 optimizations in the compiler, causing inefficiency in all sorts
5357 of places. (I found it because I wanted to understand why
5358 GET-INTERNAL-RUN-TIME was consing.)
5359 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5360 PROCLAIM FTYPE information. Unfortunately this broke binary
5361 compatibility again, since now the forms output by DEFGENERIC
5362 to refer to functions which didn't exist in 0.6.3.
5363 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5364 can use the new (as of 0.6.3) transform for SOME into MAP into
5366 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5367 values to (INTEGER 0 1000000), so that the time code will no longer
5368 occasionally get blown up by Linux returning 1000000 microseconds
5369 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5370 its output conform to the ANSI spec. (Alas, this makes its output
5371 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5372 * A full call to MAP NIL with a single sequence argument no longer conses.
5373 * fixes to problems pointed out by Martin Atzmueller:
5374 * The manual page no longer talks about multiprocessing as though
5375 it were currently supported.
5376 * The ILISP support patches have been removed from the distribution,
5377 because as of version 5.10.1, ILISP now supports SBCL without us
5378 having to maintain patches.
5379 * added a modified version of Raymond Toy's recent CMU CL patch for
5380 EQUALP comparison of HASH-TABLE
5382 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5384 * The system still can't cross-compile itself with
5385 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5386 entails), but at least it can compile more of itself that way
5387 than it used to be able to, and various buglets which were uncovered
5388 by trying to cross-compile itself that way have now been fixed.
5389 * This release breaks binary compatibility again. This time
5390 at least I've incremented the FASL file format version to 2, so that the
5391 problem can be detected reliably instead of just causing weird errors.
5392 * various new style warnings:
5393 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5394 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5395 ** using the lexical binding of a variable named in the *FOO* style
5396 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5397 as specified by ANSI.
5398 * *RANDOM-STATE* is no longer automatically initialized from
5399 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5400 default behavior of the system is to repeat its behavior every time
5401 it's run. If you'd like to change this behavior, you can always
5402 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5403 old convention there was no comparably easy way to get the system to
5404 repeat its behavior every time it was run.
5405 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5406 FTYPE declarations has been removed, in favor of their ANSI
5407 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5408 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5409 the types of their sequence arguments can be determined at compile time.
5410 This is done through a new open code expansion for MAP which eliminates
5411 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5412 argument types can be determined at compile time.
5413 * The optimizer now transforms COERCE into an identity operation when it
5414 can prove that the coerced object is already of the correct type. (This
5415 can be a win for machine generated code, including the output of other
5416 optimization transforms, such as the MAP transform above.)
5417 * Credit information has been moved from source file headers into CREDITS.
5418 * Source file headers have been made more standard.
5419 * The CASE macro now compiles without complaining even when it has
5422 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5424 * (Note that the way that the PCL macroexpansions were rewritten
5425 to accommodate the change in DEFGENERIC below breaks binary
5426 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5427 not run under sbcl-0.6.2. Once we get out of alpha releases,
5428 i.e. hit release 1.0.0, we'll probably try to maintain binary
5429 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5430 and sbcl-1.4.4. Until then, however, it might be fairly common
5431 for maintenance releases to break binary compatibility.)
5432 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5434 * The reporting of unhandled signals has been changed to print some
5435 explanatory text as well as the report form. (Previously only
5436 the report form was printed.)
5437 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5438 it defines, so that the compiler no longer issues undefined function
5439 warnings for compiled-but-not-yet-loaded generic functions.
5440 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5441 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5442 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5443 section of the ANSI spec are supported.
5444 * The "" nickname for the "KEYWORD" package has been removed.
5445 The reader still handles symbol tokens which begin with a package marker
5446 as keywords, but it doesn't expose its mechanism for doing so in the
5447 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5448 * The system now issues STYLE-WARNINGs for contradictory TYPE
5449 proclamations. (Warnings for contradictory FTYPE proclamations would
5450 be nice too, but those can't be done usefully unless the type system
5451 is made smarter about FUNCTION types.)
5452 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5453 systematized, so that "*target-*.lisp is supposed to exist only on the
5454 target and imply that there's a related file which exists on the
5455 host, and *host-*.lisp is supposed to exist only on the host and imply
5456 that there's a related file which exists on the target. This involves a
5457 lot of renaming. Hopefully the acute confusion caused by the renaming
5458 will be justified by the reduction in chronic confusion..
5459 ** runtime-type.lisp -> early-target-type.lisp
5460 ** target-type.lisp -> late-target-type.lisp
5461 ** early-host-format.lisp -> early-format.lisp
5462 ** late-host-format.lisp -> late-format.lisp
5463 ** host-error.lisp -> misc-error.lisp
5464 ** early-error.lisp -> early-target-error.lisp
5465 ** late-error.lisp -> late-target-error.lisp
5466 ** host-defboot.lisp -> early-defboot.lisp
5467 ** code/misc.lisp -> code/target-misc.lisp
5468 ** code/host-misc.lisp -> code/misc.lisp
5469 ** code/numbers.lisp -> code/target-numbers.lisp
5470 ** code/early-numbers.lisp -> numbers.lisp
5471 ** early-host-type.lisp -> early-type.lisp
5472 ** late-host-type.lisp -> late-type.lisp
5473 ** host-typep.lisp -> typep.lisp
5474 ** load.lisp -> target-load.lisp
5475 ** host-load.lisp -> load.lisp
5476 ** host-disassem.lisp -> disassem.lisp
5477 ** host-insts.lisp -> insts.lisp
5478 ** byte-comp.lisp -> target-byte-comp.lisp
5479 ** host-byte-comp.lisp -> byte-comp.lisp
5480 ** host-signal.lisp -> signal.lisp
5481 ** host-defstruct.lisp -> defstruct.lisp
5482 ** late-target-type.lisp -> deftypes-for-target.lisp
5483 Furthermore, several other previously target-only files foo.lisp (e.g.
5484 hash-table.lisp and random.lisp) have been split into a target-and-host
5485 foo.lisp file and a target-only target-foo.lisp file, with their key type
5486 definitions in the target-and-host part, so that the cross-compiler will
5487 know more about target types.
5488 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5489 gone away. In their place are various *BACKEND-FOO* variables
5490 corresponding to the slots of the old structure.
5491 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5492 into the target SBCL has been fixed.
5493 * The chill.lisp system for loading cold code into a running SBCL
5495 * Support for the CMU CL "scavenger hook" extension has been removed.
5496 (It was undocumented and unused in the CMU CL sources that SBCL was
5497 derived from, and stale in sbcl-0.6.1.)
5498 * Various errors in the cross-compiler type system were detected
5499 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5500 (enabling various consistency checks). Many of them were fixed,
5501 but some hard problems remain, so the compiler is back to
5502 running without *TYPE-SYSTEM-INITIALIZED* for now.
5503 * As part of the cross-compiler type system cleanup, I implemented
5504 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5505 * I have started adding UNCROSS calls throughout the type system
5506 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5507 on cross-compiler input files will be able to go away, and various
5509 * CONSTANTP now returns true for quoted forms (as explicitly required
5512 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5514 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5515 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5516 (MAKE-LIST -1). In the longer term, it ought to become true
5517 that declarations are assertions even at SAFETY 1. For now, it's not
5518 quite true even at SAFETY 3, but it's at least more nearly true..
5519 (Note that this change seems to increases the size of the system by
5520 O(5%) and to decrease the speed of the compiler by 20% or more.)
5521 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5522 for the problem of printing dozens of lines of distracting information
5523 about low-level system machinery as part of the top stack frame
5524 on entry to the debugger when an undefined function was called.
5525 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5526 is not reset to COMMON-LISP-USER.
5527 * Compilation of stuff related to dyncount.lisp has been made conditional
5528 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5529 smaller. The various dyncount-related symbols have been moved into
5530 a new "SB-DYNCOUNT" package.
5531 * tty-inspect.lisp has been renamed to inspect.lisp.
5532 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5533 feature has gone away. (When we eventually port to other flavors of
5534 libc and/or Unix, we'll try to make the differences between flavors
5535 invisible at the user level.)
5536 * Various other *FEATURES* tags, and/or their associated conditionals,
5537 have been removed if obsolescent, or given better documentation, or
5538 sometimes given more-mnemonic names.
5540 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5542 * tidied up "make.sh" script
5543 * tidied up system directory structure
5544 * better "clean.sh" behavior
5545 * added doc/FOR-CMUCL-DEVELOPERS
5546 * many many small tweaks to output format, e.g. removing possibly-confusing
5547 trailing #\. character in DESCRIBE-INSTANCE
5548 * (EQUALP #\A 'A) no longer signals an error.
5549 * new hashing code, including EQUALP hashing
5550 * tidied up Lisp initialization and toplevel
5551 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5552 * command line argument processing
5553 * added POSIX-GETENV function to deal with Unix-ish environment variables
5554 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5555 terminating SBCL on EOF
5556 * non-verbose GC by default
5557 * There is no more "sbcl" shell script; the sbcl file is now the C
5558 runtime executable (just like CMU CL).
5559 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5561 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5562 symbol and package information as Lisp native symbol and package objects
5563 instead of strings naming symbols and strings naming packages. This way,
5564 whenever packages are renamed (as in warm init), debug information is
5565 transformed along with everything else.
5566 * tweaked the optimization policy declarations which control the building
5567 of SBCL itself. Now, among other things, the system no longer saves
5568 source location debugging information. (This helps two problems at once
5569 by reducing SBCL size and by keeping SBCL from trying to look for its
5570 sources -- which may not exist -- when reporting errors.)
5571 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5572 debugging and testing purposes
5573 * cleaned up printing, making the printer call PRINT-OBJECT for
5574 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5575 methods, giving nearly-ANSI behavior
5576 * converted almost all special variables to use *FOO* naming convention
5577 * deleted PARSE-TIME functionality, since it can be done portably
5578 * moved some files out of cold init into warm init
5579 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5581 * regularized formatting of source files
5582 * added an install.sh script
5583 * fixed ridiculous memory usage of cross-compiler by making
5584 compiler/alloc.lisp not try to do pooling unless it can hook
5585 itself into the GC of the cross-compilation host. Now the system
5586 builds nicely on my old laptop.
5587 * added :SB-ALLOC in target-features.lisp-expr
5588 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5589 was not implemented)
5590 * re-did condition handling and note reporting in the compiler. Notes
5591 are no longer handled by signalling conditions. Style warnings
5592 and warnings are handled more correctly and reported in such a way
5593 that it's easy to find one or the other in your output (so that you
5594 can e.g. figure out which of many problems caused COMPILE-FILE to
5596 * changed the severity of several compiler warnings from full WARNING
5597 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5598 compiler note reporting so that it doesn't use the condition system
5599 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5600 COMPILE-FILE command)
5601 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5602 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5603 no longer supported, since their implementation was deeply intertwingled
5604 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5605 * removed bogus "support" for compiler macros named (SETF FOO), and
5606 removed the compiler macro for SETF INFO (but only after making a fool
5607 of myself on the cmucl-imp mailing list by posting a bogus patch for
5608 DEFINE-COMPILER-MACRO..)
5609 * Compiled files containing forms which have side effects on the Lisp
5610 reader (such as DEFPACKAGE forms) are now handled more correctly.
5611 (Compiler queuing of top level lambdas has been suppressed by setting
5612 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5613 * deleted various currently-unused source files, e.g. gengc.lisp. They
5614 may be added back at some point e.g. when porting to other architectures,
5615 but until they are it's distracting to distribute them and to try to
5617 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5618 there were so many of them they're just distractions, and UNCROSS is
5619 known to be able to handle the current sources
5620 * moved PROFILE functionality into TRACE, so that it will be clear
5621 how the wrapping and unwrapping of functions when you profile them
5622 interacts with the wrapping and unwrapping of functions when you
5623 trace them. (Actually, the functionality isn't there yet, but at least
5624 the interface specification is there. Hopefully, the functionality will
5625 arrive with some future maintenance release.)
5626 * removed host-oops.lisp
5627 * changed signature of QUIT function to allow UNIX-CODE argument
5628 * fixed READ-SEQUENCE bug
5629 * tweaked verbose GC output so that it looks more like the progress
5630 output that ANSI specifies for functions like LOAD
5631 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5632 * added <http://sbcl.sourceforge.com> to the banner information printed by