1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.35:
3 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
4 in a row even though a handler defered the deadline long into the
6 * bug fix: a deadline handler was run without interrupts enabled for a
7 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
8 in infinitely spinning, non-killable threads.
10 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
11 * optimization: ROUND with a single single-float or double-float argument
12 is properly inlined when possible.
13 * optimization: Slightly better code is generated for integer<->float
14 conversions and for single-float<->double-float conversions on x86-64.
15 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
16 code for 32-bit and 64-bit rotations on x86-64.
17 * bug fix: The install script changes the ownership of directories as well
18 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
19 launchpad bug lp#508485)
20 * bug fix: TRUNCATE with a single single-float or double-float argument is
21 properly inlined when possible. (launchpad bug lp#489388)
22 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
23 no longer causes a compiler error on x86 and ppc.
24 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
25 always relative to *READTABLE* rather than the passed argument.
27 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
28 * minor incompatible change: threading support is now enabled by default
30 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
32 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
33 are now caught and reported just like errors during macroexpansion.
34 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
35 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
36 * enhancement: ASDF systems can now depends on SB-QUEUE.
37 * fixes and improvements related to Unicode and external formats:
38 ** bug fix: error handling and restart usage in the ucs-2 external format
40 ** there is now an implementation of the ucs-4 external format.
41 ** the utf-16 and utf-32 external formats are supported.
42 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
43 in the environment. setenv() and unsetenv() are also provided. (reported by
44 Fare Rideau; launchpad bug lp#460455)
45 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
46 loading. This ensures sensible errors for .FASL files from other
47 implementations on case-insensitive filesystems. (reported by Willem
48 Broekema; launchpad bug lp#489417)
49 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
50 Willem Broekema; launchpad bug lp#489698).
51 * bug fix: some minor code rearrangements to reenable warning-free building
52 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
53 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
55 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
58 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
59 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
60 * improvement: support O_LARGEFILE access to files larger than 2GB on
61 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
62 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
63 definitions for methods specializing on the passed class itself.
64 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
65 definitions for methods specializing on the passed class itself, or on
67 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
68 about itself during the build (e.g. for M-? in Slime), if this flag is
69 enabled in customize-target-features.lisp. This will increase the core
70 size by about 5-6mb, though, so it's mostly interesting to SBCL
72 * new feature: various GENCGC tuning parameters have been experimentally
73 documented and exported from SB-EXT. See documentation for details.
74 * fixes and improvements related to Unicode and external formats:
75 ** the Unicode character database has been upgraded to the
76 Unicode 5.2 standard, giving names and properties to a number of new
77 characters, and providing a few extra characters with case
79 ** improvement: restarts for providing replacement input/output on coding
80 errors for fd-stream external formats.
81 ** improvement: where :<encoding> is a keyword corresponding to an
82 external format the system supports, it is now possible to specify
83 (:<encoding> :replacement <character>) as an external format which will
84 automatically substitute <character> on encoding or decoding errors for
85 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
87 ** improvement: the file streams underlying the standard streams (such as
88 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
89 which uses the replacement mechanism to handle encoding errors,
90 preventing various infinite error chains and unrecoverable I/O
92 ** minor incompatible change: the utf-8 external format now correctly
93 refuses to encode Lisp characters in the surrogate range (char-codes
94 between #xd800 and #xdfff).
95 ** fix a typo preventing conversion of strings into octet vectors
96 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
98 ** fix a bug in the octet multibyte handling of decoding errors and the
99 USE-VALUE restart. (launchpad bug lp#314939)
100 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
101 restart on fd-stream decoding errors.
102 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
103 error is near the end of file.
104 ** fix a double-error case in unibyte octet conversions, when the first
105 use of USE-VALUE is ignored.
106 ** fix bugs in handling of undefined code points in unibyte encodings.
107 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
108 streams after an UNREAD-CHAR.
109 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
110 object is allocated in a boxed region of dynamic space.
111 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
112 fork with multiple Lisp threads running is made, instead of going
113 ahead with unpredictable consequences. (reported by Leslie Polzer)
114 * bug fix: uses of slot accessors on specialized method parameters within
115 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
116 error while finalizing the class. This fix may cause classes with slot
117 accessors to be finalized later than previously. (reported by Lars Rune
118 Nøstdal; launchpad bug lp#473699)
119 * bug fix: restore buildability on the MIPS platform. (regression from
120 1.0.30.38, reported by Samium Gromoff)
121 * bug fix: inspecting closures is less likely to fail with a type error.
122 * bug fix: no timer starvation when setting the system clock back.
123 (launchpad bug lp#460283)
124 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
125 standard pprint dispatch table as specified by CLHS.
126 * bug fix: give CLISP a hint about a type declaration to enable it to build
127 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
129 * bug fix: correctly dump literal objects in defaulting forms of arglists.
130 (reported by Attila Lendvai; launchpad bug lp#310132)
131 * bug fix: distinguish in type specifiers between arrays that might be
132 complex and arrays that are definitely complex. (launchpad bug lp#309129)
133 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
134 type. (reported by Levente Mészáros; launchpad bug lp#485972)
135 * bug fix: setting the value of a symbol-macro within a method in the
136 presence of type declarations works properly again. (reported by Iban
137 Hatchondo; launchpad bug lp#485019)
139 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
140 * optimization: faster FIND and POSITION on strings of unknown element type
141 in high SPEED policies. (thanks to Karol Swietlicki)
142 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
144 * improvement: better error signalling for bogus parameter specializer names
145 in DEFMETHOD forms (reported by Pluijzer)
146 * bug fix: DELETE-FILE once again works on logical pathnames (regression
148 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
150 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
151 removes previous default initargs (reported by Lars Rune Nøstdal and
153 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
154 lambda-lists. (reported by Peter Seibel)
155 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
156 correctly when starting from an executable core without saved runtime
157 options (reported by Faré Rideau, thanks to Zach Beane)
158 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
159 an optimization note instead. (reported by Martin Cracauer)
160 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
161 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
162 new process group if it doesn't need to share stdin with the sbcl
163 process. (thanks to Leslie Polzer)
164 * bug fix: SATISFIES could be misoptimized to refer to a local function.
165 (reported by Stanislaw Halik)
167 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
168 * improvement: stack allocation is should now be possible in all nested
169 inlining cases: failure to stack allocate when equivalent code is manually
170 open coded is now considered a bug.
171 * improvements related to Unicode:
172 ** the Unicode character database has been upgraded to the
173 Unicode 5.1 standard, giving names and properties to a number of new
174 characters, and providing a few extra characters with case
176 ** the system now recognizes and produces names for Unicode Hangul
178 ** the EBCDIC-US external-format is now supported for octet operations
179 (as well as for stream operations).
180 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
181 be used to output toplevel compile-time effects into a separate .CFASL
183 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
184 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
186 * optimization: TRUNCATE on known single- and double-floats is upto 25%
188 * optimization: division of floating point numbers by constants uses
189 multiplication by reciprocal when an exact reciprocal exists.
190 * optimization: multiplication of single- and double-floats floats by
191 constant two has been optimized.
192 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
193 sufficient type information is available. (thanks to Leslie Polzer)
194 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
195 known structure objects are as efficient as defstruct generated accessors.
196 * optimization: unused vector creation can now be optimized away.
197 * improvement: ASDF systems can now depends on SB-INTROSPECT.
198 * improvement: a STYLE-WARNING is signalled when a generic function
199 clobbers an earlier FTYPE proclamation.
200 * improvement: the compiler is able to track the effective type of
201 generic function across method addition and removal even in the
202 absence of an explicit DEFGENERIC.
203 * improvement: DESCRIBE now reports on symbols naming undefined
204 but assumed or declared function as well.
205 * improvement: recompilation of systems using SB-GROVEL now works
206 (thanks to Leslie Polzer)
207 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
208 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
210 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
211 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
212 well as user defined declaration names.
213 ** VARIABLE-INFORMATION is now aware of alien variables.
214 * improvement: improved address space layout on OpenBSD (thanks to Josh
216 * improvement: pretty-printing of various Lisp forms has been improved
217 (thanks to Tobias Rittweiler)
218 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
219 unused were deleted in safe code. (reported by John Fremlin)
220 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
222 * bug fix: some out-of-line array predicates were missing (reported by
224 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
226 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
227 (thanks to Larry D'Anna)
228 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
229 as well. (reported by Josh Elsasser)
230 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
231 leading to possible attempts to delete the same file twice. See docstring
232 on DELETE-FILE for details. (reported by John Fremlin)
233 * bug fix: DELETE-FILE once again deletes the file named by the pathname
234 designator argument, rather than its truename. (reported by Luis
236 * bug fix: the low-level debugger had 32-bit assumptions and was missing
237 information about some array types. (thanks to Luis Oliveira)
238 * bug fix: moderately complex combinations of inline expansions could
239 be miscompiled if the result was declared to be dynamic extent.
240 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
241 form (+ <variable> <integer>) were miscompiled under certain
243 * bug fix: in some cases no compiler note about failure to stack allocate
244 was emitted, even if the objects were in fact heap allocated.
245 * bug fix: minor violation of "otherwise inaccessible" rule for stack
246 allocation could cause objects users might reasonably expect to
247 be heap allocated to be stack allocated.
248 * bug fix: DESCRIBE signalled an error for generic functions under
249 certain circumstances. (thanks to Leslie Polzer)
250 * bug fix: Fixed spelling of an error message.
252 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
253 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
254 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
255 of SB-THREAD:THREAD-ERROR-THREAD.
256 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
257 * new feature: docstrings for local and anonymous functions are no longer
258 discarded. (thanks to Leslie Polzer)
259 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
260 values in other threads.
261 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
262 about object allocation.
263 * optimization: division of a real float by a complex float is implemented
264 with a specialised code sequence.
265 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
266 keywords is an order of magnitude faster.
267 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
268 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
269 methods, and similarly for non-standard metaclass classes as long as there
270 are no methods additional on MAKE-INSTANCE.
271 * optimization: more efficient type-checks for FIXNUMs when the value
272 is known to be a signed word on x86 and x86-64.
273 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
274 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
276 * optimization: compiler is smarter about delegating argument type checks to
278 * optimization: several character functions are now compiled somewhat more
279 efficiently. (reported by Lynn Quam)
280 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
281 * improvement: less unsafe constant folding in floating point arithmetic,
282 especially for mixed complex/real -float operations.
283 * optimization: constant double and single floats are stored in native
284 unboxed format on x86[-64].
285 * optimization: smarter code for arithmetic operations with constant floats,
286 complex floats, or integers on x86[-64].
287 * optimization: smarter code for conjugate/multiplication of float complexes
288 and abs/negate of floats on x86-64.
289 * optimization: more efficient complex float and real float operations on
291 * improvement: complex float division is slightly more stable.
292 * improvement: DESCRIBE output has been reworked to be easier to read and
293 contains more pertinent information.
294 * improvement: failure to provide requested stack allocation compiler notes
295 provided in all cases (requested stack allocation not happening without a
296 note being issued is now considered a bug.)
297 * bug fix: SB-POSIX exports the documented types and functions
298 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
299 types. (reported by "abhi")
300 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
301 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
302 (thanks to Paul Khuong)
303 * bug fix: looping around HANDLER-CASE could silently consume stack space
304 on each iteration. (reported by "foobar")
305 * bug fix: better error signalling when calls to functions seeking elements
306 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
307 (reported by Tobias Rittweiler)
308 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
309 directory components now works as it used to. (various prolems reported by
310 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
311 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
312 (reported by Elliot Slaughter, thanks to Stas Boukarev)
313 * bug fix: bogus undefined variable warnings from fopcompiled references to
314 global variables. (thanks to Lars Rune Nøstdal)
315 * bug fix: foreign function names should now appear in backtraces on
316 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
317 * bug fix: SETF compiler macro documentation strings are not discarded
319 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
320 (thanks to Alex Plotnick)
321 * bug fix: SLEEP accepts large integer arguments, truncating them to
322 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
323 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
324 * bug fix: compiler notes for expensive slot type checks could be emitted
325 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
327 changes in sbcl-1.0.29 relative to 1.0.28:
328 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
329 https://bugs.launchpad.net/sbcl
330 Bugs can be reported directly there, or by sending email to
331 sbcl-bugs@lists.sourceforge.net
332 (no subscription required.)
333 * minor incompatible change: under weak type checking policy integer
334 types are weakened less aggressively.
335 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
336 allowed to return, which causes SBCL to quit with exit status 0. Previously
337 if the function returned with a small integer return value, that value
338 was accidentally reused as the exit status.
339 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
340 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
341 :HASH-FUNCTION argument. Refer to user manual for details.
342 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
344 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
345 microseconds since the Unix epoch on all platforms.
346 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
347 allows the compiler to safely elide boundedness checks for special
349 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
350 the symbol, prohibits both lexical and dynamic binding. This is mainly an
351 efficiency measure for threaded platforms, but also valueable in
353 * new feature: UNC pathnames are now understood by the system on Windows.
354 * optimization: the compiler uses a specialized version of FILL when the
355 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
357 * optimization: accesses to potentially non-simple arrays where element type
358 is known are 50% faster.
359 * optimization: compiler now generates faster array typechecking code.
360 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
362 * optimization: multidimensional array accesses in the absence of type
363 information regarding array rank are approximately 10% faster due to
364 open coding of ARRAY-RANK.
365 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
366 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
368 * optimization: result of call to VECTOR can now be stack allocated.
369 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
370 as long as the resulting array is one-dimensional and has a known
371 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
372 length of the list matches the known length of the vector does not
373 allocate the list as an intermediate step. Ditto for VECTOR and simple
375 * optimization: MAKE-ARRAY can now stack allocate in the presence of
376 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
377 known element type, and is known to be simple and one dimensional.
378 * improvement: SBCL now emits a compiler note where stack allocation was
379 requested but could not be provided (not in all cases, unfortunately)
380 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
381 * improvement: pretty-printing loop has been implemented properly. (thanks
382 to Tobias Rittweiler)
383 * documentation: CLOS slot typechecing policy has been documented.
384 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
385 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
386 pointer, leading to memory faults. (thanks to Bart Botta)
387 * bug fix: better floating point exception handling on x86/OpenBSD.
388 (thanks to Josh Elsasser)
389 * bug fix: exit status from QUIT when called under --script was lost
390 (reported by Hubert Kauker)
391 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
392 same implementation of FILL to initialize the array, even if a more
393 efficient one was available (reported by Stas Boukarev, thanks to
395 * bug fix: potential miscompilation of array stack allocation on x86 and
396 x86-64. (reported by Time Tossavainen)
397 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
398 result in their subforms being treated as top level forms. (reported by
400 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
401 than a machine register could leave garbage in the high bits of the
402 result register (bug 316325).
403 * bug fix: disable address space randomization Linux/x86-64 as well,
404 not just x86-64. (reported by Ken Olum)
405 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
406 generate incorrect code.
407 * bug fix: #201; type inference for CONS and ARRAY types could derive
408 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
409 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
410 could not be assigned to or bound with PROGV. (reported by Lorenz
412 * bug fix: the value of CL:- in the inspector was the previous expression
413 evaluated rather than the expression being evaluated.
414 * bug fix: constants can no longer be locally declared special.
415 * bug fix: signals delivered to threads started from foreign land (read:
416 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
417 thread by blocking all signals and resignalling.
418 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
419 from :INITFORM, if any.
421 changes in sbcl-1.0.28 relative to 1.0.27:
422 * a number of bugs in cross-compilation have been fixed, with the ultimate
423 result that building under (at least) clisp should be much more reliable.
424 * minor incompatible changes: echo-streams now propagate unread-char to the
425 underlying input stream, and no longer permit unreading more than one
427 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
428 frames, allowing for instance more reliable backtraces.
429 * improvement: the debugger REPL can now reference lexical variables
430 by name directly for code compiled with (DEBUG 3).
431 * improvement: errors from malformed declarations now have better source
432 paths associated with them. (thanks to Tobias Rittweiler)
433 * optimization: faster local calls on x86/x86-64
434 * bug fix: some error messages for out-of-bound array indexes confused the
435 index and the bound. (thanks to Stas Boukarev)
436 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
438 * bug fix: running regressions tests in shells without OSTYPE set now works.
439 (reported by Harald Hanche-Olsen)
440 * bug fix: more robust static space exhaustion signalling from
441 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
442 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
443 docstring away instead of storing it under names such as (LAMBDA (X)).
444 (reported by Leslie Polzer)
445 * bug fix: timers could go off in the wrong order, be delayed indefinitely
446 (thanks to Ole Arndt for the patch)
447 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
448 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
449 potentially-invalid effective methods in its cache.
450 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
451 instances as well (thanks to Paul Khuong)
452 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
453 SB-POSIX:WAITPID and their C equivalents.
454 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
456 changes in sbcl-1.0.27 relative to 1.0.26:
457 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
458 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
459 * improvement: the system either recovers from stack exhaustion or dies
460 properly as opposed to leaving the user uncertain of whether the handler
461 trampled on some random memory next to the stack or having to rely on
462 --lose-on-corruption (which is still a good idea to use in production
463 because stack exhaustion can happen in signal handlers which will likely
465 * bug fix: fix gc related interrupt handling bug on ppc (regression from
466 1.0.25.37, reported by Harald Hanche-Olsen)
467 * bug fix: work around signal delivery bug in darwin (regression from
468 1.0.25.44, reported by Sidney Markowitz)
469 * bug fix: fix ERROR leaking memory (reported by David Thompson)
471 changes in sbcl-1.0.26 relative to 1.0.25:
472 * incompatible change: an interruption (be it a function passed to
473 INTERRUPT-THREAD or a timer function) runs in an environment where
474 interrupts can be enabled. The interruption can use
475 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
476 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
477 potentially running out of stack. Keep in mind that in the absence
478 of WITHOUT-INTERRUPTS some potentially blocking operation such as
479 acquiring a lock can enable interrupts.
480 * incompatible change: GC-OFF and GC-ON are removed, as they were
481 always unsafe. Use WITHOUT-GCING instead.
482 * new feature: runtime option --disable-ldb
483 * new feature: runtime option --lose-on-corruption to die at the
484 slightest hint of possibly non-recoverable errors: running out of
485 memory, stack, alien stack, binding stack, encountering a memory
486 fault, etc. In the absence of --lose-on-corruption a warning is
488 * enhancement: detect binding stack exhaustion
489 * enhancement: detect alien stack exhaustion on x86/x86-64
490 * improvement: generally more stable and reliable interrupt handling
491 * improvement: there is a per thread interruption queue,
492 interruptions are executed in order of arrival
493 * improvement: a repeating timer reschedules itself when the it has
494 finished, but expiration times are spaced equally. If an
495 expiration time is in the past it will trigger after a short grace
496 period that may give a chance to other things to run.
497 * optimization: slightly faster gc on multithreaded builds
498 * optimization: faster WITHOUT-GCING
499 * bug fix: when JOIN-THREAD signals an error, do it when not holding
500 important locks so that the debugger/handler doesn't produce
501 recursive errors or deadlock.
502 * bug fix: real-time signals are not used anymore, so no more
503 hanging when the system wide real-time signal queue gets full.
504 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
506 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
507 * bug fix: fix random memory faults related to interrupts on alpha
508 * bug fix: fix random memory faults related to interrupts on sparc
509 * bug fix: fix deadlocks related to starting threads
510 * bug fix: fix deadlines on locks on futex platforms
511 * bug fix: restore errno in signal handlers
512 * bug fix: fix deadlocks related to hash tables
513 * bug fix: fix deadlocks in pcl
515 changes in sbcl-1.0.25 relative to 1.0.24:
516 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
517 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
518 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
519 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
520 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
521 better name and does not return values so stale on multiprocessor systems.
522 Also, HOLDING-MUTEX-P was added for about the only sane usage of
524 * improvement: unithread builds keep track of MUTEX-VALUE.
525 * improvement: reading from a TWO-WAY-STREAM does not touch the output
526 stream anymore making it thread safe to have a concurrent reader and
527 a writer, for instance, in a pipe.
528 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
529 arguments, making compiler-macros for SETF-functions able to inspect
530 their constant arguments.
531 * improvement: COMPILE-FILE reports times with millisecond accuracy
532 (thanks to Luis Oliveira)
533 * optimization: CHAR-CODE type derivation has been improved, making
534 TYPEP elimination on subtypes of CHARACTER work better. (reported
535 by Tobias Rittweiler, patch by Paul Khuong)
536 * bug fix: setting alien structure fields of type struct by value now
537 computes the right offset for the memory copy.
538 * bug fix: compilation problem involving inlined calls to aliens with
539 result type VOID. (reported by Ken Olum)
540 * bug fix: #235a; sequential inline expasion in different policies no
541 longer reuses the functional from the previous expansion site.
542 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
543 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
544 * bug fix: named ENUMs in multiply-referenced alien record types no longer
545 cause an implied type redefinition. Regression from 1.0.21.29.
546 * bug fix: sign-extension of small signed return values now works with C
547 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
548 * improvements to the Windows port:
549 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
550 Westfold, thanks to Rudi Schlatte)
552 changes in sbcl-1.0.24 relative to 1.0.23:
553 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
554 vector of a multidimensional SIMPLE-ARRAY.
555 * new feature: the system now signals a continuable error if standard
556 readtable modification is attempted. (thanks to Tobias Rittweiler)
557 * new feature: DIRECTORY has been extended with a non-standard keyword
558 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
559 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
560 has been robustified and documented better. (thanks to Robert Goldman)
561 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
562 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
563 * tradeoff: constant FORMAT control strings are now compiled unless
564 SPACE > SPEED (previously only when SPEED > SPACE.)
565 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
567 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
569 * bug fix: lexical type declarations are now correctly reported by
570 SB-CLTL2. (reported by Larry D'Anna)
571 * bug fix: STRING-TO-OCTETS did not handle :START properly when
572 using UTF-8 as external format. (thanks to Luis Oliveira)
573 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
574 are signalled correctly. (thanks to Stas Boukarev)
575 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
576 designator. (thanks to Tobias Rittweiler)
577 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
578 designator, and returns T instead of the function. (thanks to
580 * bug fix: direct superclasses of STANDARD-CLASS and
581 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
582 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
583 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
584 when no class with the named slot yet exists no longer causes a
585 compile-time style-warning.
586 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
587 in safe code. (reported by Didier Verna)
588 * bug fix: #430; nested structure constructors can stack allocate.
589 * bug fix: on some 64-bit platforms dynamic space size was truncated
590 to #xffff0000 bytes. (reported by Benjamin Lambert)
591 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
592 REPL unusable. (reported by Daniel Herring)
593 * bug fix: return values of READ-SEQUENCE did not take :START into
594 account on file streams, regressions since 1.0.12.22. (reported by
595 Thomas Russ, patch by Paul Khuong)
596 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
597 method specializer used to confuse permuation vector optimization.
598 * bug fix: system inserted bogus implicit type declarations for local
599 special variables in DEFMETHOD bodies.
600 * bug fix: #354; duplicated frames in backtraces due to
601 non-tail-call-optimized XEPs to functions with return type NIL
603 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
604 initializes structure object slots according to DEFSTRUCT initforms,
605 and DEFSTRUCT forms :INCLUDEind structure classes defined using
606 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
607 (reported by Bruno Haible and Stephen Wilson)
608 * bug fix: #395; fill-pointer output streams used now support
609 element-type BASE-CHAR as well.
610 * bug fix: compiler error when attempting to derive return value of
611 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
613 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
615 * bug fix: Mac OS X binaries should now be portable between Leopard
618 changes in sbcl-1.0.23 relative to 1.0.22:
619 * enhancement: when disassembling method functions, disassembly
620 for the associated fast function is also produced.
621 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
623 * optimization: printing with *PRINT-PRETTY* true is now more
624 efficient as long as the object being printed doesn't require
625 special handling by the pretty printer.
626 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
627 now interact correctly with type declarations.
628 * partial bug fix: PCL detects infinite recursion during wrapper
629 validation. (thanks to Attila Lendvai)
630 * bug fix: #426; nested function calls are inlined properly.
631 Previously if FOO was an inline function, in calls of the form
632 (FOO (FOO ...)) the outer call was not inlined.
633 * bug fix: long long arguments passed in registers to alien
634 functions on PowerPC Linux and NetBSD are now handled correctly
635 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
637 changes in sbcl-1.0.22 relative to 1.0.21:
638 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
639 for the shared object in the current directory, but passes the native
640 namestring of the designated pathname to the operation system's shared
641 object loading function as-it.
642 * minor incompatible change: --disable-debugger toplevel option now takes
643 effect before processing of initialization files and --eval or --load
645 * new feature: new commandline argument: --script, which supports
646 shebang lines. See documentation for details. (based on work by
648 * new feature: SAVE-LISP-AND-DIE can save current values of
649 --dynamic-space-size and --control-stack-size in the executable core,
650 causing it to skip normal runtime option processing. See documentation
651 for details. (thanks to Zach Beane)
652 * enhancement: inoccous calls to EVAL or generic functions dispatching
653 on subclasses of eg. STREAM no longer cause compiler notes to appear.
654 * enhancement: the system no longer resignals errors from --load and
655 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
656 associated with the original error to be lost. (thanks to Ariel
658 * enhancement: :DONT-SAVE keyword argument has been added to
659 LOAD-SHARED-OBJECT for controlling interaction with
660 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
661 the effects of an earlier LOAD-SHARED-OBJECT call.
662 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
663 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
664 provided. (reported by Cedric St-Jean)
665 * bug fix: circularity handling in the reader did not treat raw
666 structure slots correctly. (reported by Cedric St-Jean)
667 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
668 file descriptors when there were none.
669 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
670 was broken. (reporteed by Willem Broekema)
671 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
672 pathnames without a directory.
673 * bug fix: COMPILE-FILE did not warn about undefined variable
674 references at toplevel, and LOAD of the resulting fasl did
676 * bug fix: functions with non-required arguments used to end up with
677 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
678 * bug fix: redefining a function with non-required arguments didn't
679 update the system's knowledge about its call signature properly.
680 * bug fix: fixed #431; incompatible alien record type redefinitions
681 are detected and handled. (reported by Neil Haven)
682 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
683 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
685 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
686 after alien stack frames.
687 * bug fix: strings passed to mk{s,d}temp lacked null termination
689 changes in sbcl-1.0.21 relative to 1.0.20:
690 * new feature: the compiler is able to track the effective type of a
691 generic function across method addition and removal.
692 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
693 appropriately typed structure slots without locking.
694 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
695 information like those gathered by TIME using a programming-friendly
697 * new feature: TIME reports time taken even if the form performs a
698 non-local transfer of control.
699 * enhancement: reduced conservativism on GENCGC platforms: on
700 average 45% less pages pinned (measured from SBCL self build).
701 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
702 mutate constant symbols or violate declaimed type of the symbol.
703 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
704 sleeping on the semaphore in heavily contested semaphores.
705 * bug fix: semaphores and condition variables were not interrupt
707 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
708 owned by other threads anymore.
709 * bug fix: FIND on lists called KEY outside the specified
710 subsequence. (reported by budden)
711 * bug fix: LOG doesn't use single-float intermediate results when
712 given mixed integer and double-float arguments, leading to better
713 precision. (reported by Bob Felts)
714 * bug fix: LOG with base zero returned values of inconsistent type.
716 changes in sbcl-1.0.20 relative to 1.0.19:
717 * minor incompatible change: OPTIMIZE qualities
718 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
719 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
720 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
721 * documentation: some slot access efficiency guidelines have been
722 added to the user manual.
723 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
724 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
725 as ASSOC and MEMEBER.
726 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
727 to more efficient EQ-comparison versions more often.
728 * optimization: enhanced derivation of DOLIST iteration variable type
730 * optimization: constant folding of simple (LIST ...) forms as DOLIST
732 * optimization: runtime lookup of function definitions can be
733 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
734 * optimization: compiler is able to derive the return type of
735 (AREF (THE STRING X) Y) as being CHARACTER.
736 * optimization: CLRHASH on empty hash-tables no longer does pointless
737 work. (thanks to Alec Berryman)
738 * optimization: REPLACE deftransforms don't punt when :START1 or
740 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
741 no longer emits a code deletion note. (reported by Andrew
743 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
744 functions with an odd number of &OPTIONAL arguments, a &REST
745 argument, and one or more &KEY arguments at the call site.
746 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
747 arguments appeared at call sites as well.
748 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
749 READ-LINE &co can no longer read from them afterwards. (reported
751 * bug fix: fixed #427: unused local aliens no longer cause compiler
752 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
754 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
755 alien-stack leakage. (reported by Andy Hefner)
756 * bug fix: PROGV signals an error when an attempt to violate declared
757 type of a variable or bind a constant is made.
758 * bug fix: SET signals an error when an attempt to violate declared
759 type of a variable is made.
760 * bug fix: restart computation during the execution of a restart
761 test function no longer causes infinite recursion. (reported by
763 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
764 signals an error. (thanks to Pierre Mai)
765 * bug fix: EXPORT left symbol unexported in conflict situations.
766 (thanks to Michael Weber)
767 * bug fix: correctly handle name conflicts involving CL:NIL.
768 (thanks to Michael Weber)
769 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
770 conflicts arising from USEing package with conflicting symbols
771 correctly. (thanks to Michael Weber)
773 changes in sbcl-1.0.19 relative to 1.0.18:
774 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
775 warnings that go otherwise unhandled will be muffled if they are
776 of the type that's the value of this variable.
777 * optimization: stack allocation is slightly more efficient on x86
779 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
780 where a raw slot always is initialized using the initform whose
781 type is not know sufficiently well a compile-time are now compiled
782 correctly. (reported by John Morrison)
783 * bug fix: compiler no longer makes erronous assumptions in the
784 presence of non-foldable SATISFIES types.
785 * bug fix: stack analysis missed cleanups of dynamic-extent
786 arguments in non-let-converted calls to local functions.
787 * improvements to the Windows port:
788 ** adjusted address spaces for building on both Win32 and
789 Win64. (thanks for John Connors)
790 * fixed some bugs revealed by Paul Dietz' test suite:
791 ** interval arithmetic during type derivation used inexact integer
792 to single-float coercions.
793 ** arithmetic operations involving large integers and single
794 floats give the same results in compiled and interpreted code.
795 ** deriving the result type of COERCE no longer signals an error
796 if the derived type of the second argument is a MEMBER type
797 containing invalid type specifiers.
798 ** ADJOIN with constant NIL as second argument works correctly.
799 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
801 changes in sbcl-1.0.18 relative to 1.0.17:
802 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
803 profiles only the current thread.
804 * minor incompatible change: changes to SYMBOL-VALUE of constants
805 defined with DEFCONSTANT now signal an error.
806 * enhancement: SB-SPROF now has support for wallclock profiling,
807 and is also able to profile specific threads. REPORT output
808 has also additional sorting options.
809 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
811 * optimization: structure allocation has been improved
812 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
813 ** out of line constructors are ~10% faster.
814 ** inline constructors are ~15% faster.
815 ** inline constructors are capable of dynamic extent allocation
816 (generally on x86 and x86-64, in some cases on other platforms
818 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
820 * optimization: file compiler is now able to coalesce non-circular
821 lists, non-base strings, and bit-vectors. Additionally, constants
822 are never referenced through SYMBOL-VALUE at runtime.
823 * optimization: code defining methods on PRINT-OBJECT (and other
824 generic functions in the COMMON-LISP package) now loads faster.
825 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
827 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
828 fasl is now deleted. (reported by Attila Lendvai)
829 * bug fix: READ-LINE always returned NIL for the last line in files.
830 (reported by Yoshinori Tahara)
831 * bug fix: more accurate disassembly annotations of foreign function
832 calls. (thanks to Andy Hefner)
833 * bug fix: trimming non-simple strings and non-string string
834 designators when the there is nothing to trim works properly.
835 (thanks to James Knight)
836 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
837 (thanks to Travis Cross)
838 * fixed some bugs revealed by Paul Dietz' test suite:
839 ** NIL is a valid function name (regression at 1.0.13.38)
840 ** FILL on lists was missing its return value (regression at 1.0.12.27)
841 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
842 fill pointers properly (regression at 1.0.12.23)
843 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
844 displacement indices properly (regression at 1.0.12.23)
846 changes in sbcl-1.0.17 relative to 1.0.16:
847 * temporary regression: user code can no longer allocate closure
848 variable storage on stack, due to bug 419 without explicitly
849 requesting it. Please consult sbcl-devel for advice if you need to
850 use this feature in the meanwhile.
851 * new feature: runtime argument --control-stack-size can be used to
852 adjust thread default control stack size.
853 * enhancement: improved TIME output
854 ** all times are reported using the measured accuracy (milliseconds
855 for real and GC times, microseconds for everything else.)
856 ** processor cycle counts on x86 and x86-64.
857 ** interpreted forms are counted for both evaluator modes.
858 ** number of lambdas converted by the compiler is reported.
859 ** CPU percentage report (computed from real and total run time.)
860 ** more comprehensive run time reporting, using a condenced format
861 ** interperted form, lambda, and page fault counts are omitted
863 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
865 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
866 * optimization: two argument forms of LAST are upto ~10% faster
867 in normal SPEED policies.
868 * optimization: NCONC no longer needs to heap cons its &REST list
869 in normal SPEED policies.
870 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
872 * bug fix: UNION and NUNION work with :TEST-NOT once more,
873 regression since 1.0.9.1. (thanks to Eric Marsden)
874 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
875 since 1.0.15.36. (thanks to Paul Khuong)
876 * bug fix: LAST when always returned the whole list when given a bignum
877 as the second argument.
878 * bug fix: dynamic extent allocation of nested lists and vectors
879 could leak to otherwise accessible parts.
880 * bug fix: invalid optimization of heap-allocated alien variable
882 * bug fix: fasl header checking is less vulnerable to different
883 platform word lengths.
884 * bug fix: more correct assembler syntax for GNU binutils
885 2.18.50.0.4 support. (thanks to Marijn Schouten)
886 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
888 * bug fix: the fopcompiler can handle LOCALLY forms (with no
889 declarations) successfully. (reported by Attila Lendvai)
891 changes in sbcl-1.0.16 relative to 1.0.15:
892 * minor incompatible change: revert the changes to sb-posix's error
893 signaling added in 1.0.14.
894 * minor incompatible change: change PROBE-FILE back to returning
895 NIL whenever we can't get a truename, as was the case before 1.0.14.
896 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
897 inherits from ERROR instead of just CONDITION.
898 * new feature: SB-INTROSPECT can provide source locations for instances
899 as well. (thanks to Tobias Rittweiler)
900 * optimization: binding special variables now generates smaller code
901 on threaded platforms.
902 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
903 and cases where no :TEST is given but the compiler can infer that
904 the element to search is of type (OR FIXNUM (NOT NUMBER)).
905 * optimization: better LOGNOT on fixnums.
906 * optimization: modular arithmetic for a particular requested width
907 is implemented using a tagged representation unless a better
908 representation is available.
909 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
910 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
911 for wellformedness and returns a specialized vector. (reported by
912 Francois-Rene Rideau)
913 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
914 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
915 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
916 unscheduling timer at the same time as another timer fires.
917 * bug fix: don't reschedule timers for dead threads.
918 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
919 * bug fix: copying output from RUN-PROGRAM to a stream signalled
920 bogus errors if select() was interrupted.
921 * enhancement: add support for fcntl's struct flock to SB-POSIX.
923 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
924 * enhancement: cleaner backtraces for interactive interrupts, as
925 well as other cases where the interesting frames used to be
926 obscured by interrupt handling frames.
927 * enhancement: untracing a whole package using (UNTRACE "FOO") is
928 now supported, and tracing a whole package using (TRACE "FOO") now
929 traces SETF-functions as well.
930 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
931 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
932 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
933 * unreadably printed representation of hash-tables now includes
935 * bug fix: partially fixed #188: type propagation from assignments
936 is now more efficient.
937 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
938 'DOUBLE-FLOAT) are not flushable.
939 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
940 full address of the object, and none of the tag bits.
941 * bug fix: readably printing hash-tables now respects other printer
942 control variables. (reported by Cedric St-Jean)
943 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
944 keyword with MAKE-HASH-TABLE.
945 * bug fix: export SB-POSIX:MKSTEMP.
946 * bug fix: SORT was not interrupt safe.
947 * bug fix: XREF accounts for the last node of each basic-block as
949 * bug fix: MAKE-INSTANCE optimizations interacted badly with
950 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
951 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
952 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
953 create obsolete instances in the case of redefinition or
954 obsoletion of a superclass. (thanks to Andy Hefner)
955 * bug fix: Support for the Alpha architecture has been revived; it had
956 suffered somewhat from lack of maintenance since sbcl-1.0.
957 * improvements to the Windows port:
958 ** The system detects the codepage to use at startup, instead of
959 using the value from the saved core. (thanks to Kei Suzuki)
961 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
962 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
963 (see documentation for details.)
964 * revived support for OpenBSD (contributed by Josh Elsasser)
965 * partially fixed bug #108: ROOM no longer suffers from occasional
966 (AVER (SAP= CURRENT END)) failures.
967 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
968 bodies no longer cause a WARNING to be signalled. (reported by
970 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
971 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
972 the bug in TRUNCATE.) (reported by Michael Weber)
973 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
974 no samples. (reported by Andy Hefner)
975 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
976 no longer appear as (NIL ...) frames in backtraces.
977 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
978 is now actually exported from SB-EXT as documented. (reported by
980 * bug fix: sb-aclrepl now correctly understands how to inspect
981 single-floats on 64-bit platforms where single-floats are not boxed.
982 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
983 yet been finalized. (reported by Levente Meszaros)
984 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
985 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
986 SBCL-specific optimize qualities.
988 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
989 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
990 an executable in the search path, and does so in the child
991 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
992 been removed; it can be found in the CVS history, for somebody who
993 needs that search behavior (see the manual).
994 * minor incompatible change: compiler policy re. weakening type
995 checks has changed: now type checks are weakened only if SAFETY < 2
997 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
998 unparsing of directory pathnames as files. Analogously,
999 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1000 filename to parse into a directory pathname.
1001 * enhancement: implicit generic function creation now signals a
1002 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1003 users can bind handlers for and muffle around calls to LOAD.
1004 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1005 to be used (using the default stream external format), and allows
1006 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1007 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1008 strings and vectors whose element-type or simplicity is not fully
1009 known at compile-time.
1010 * optimization: STRING-TRIM and related functions no longer allocate
1011 a new string when no trimming needs to be performed. These functions
1012 are also faster than before when the input string has been declared
1014 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1015 * optimization: READ-LINE is significantly faster for files containing
1017 * optimization: non-open coded uses of character comparison operators
1018 (e.g. char=) no longer cons when called with more than one parameter
1019 on platforms supporting dynamic-extent allocation.
1020 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1021 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1022 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1024 * bug fix: some sequence functions elided bounds checking when
1026 * bug fix: too liberal weakening of union-type checks when SPEED >
1028 * bug fix: more bogus fixnum declarations in ROOM implementation
1031 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1032 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1033 :SYNCHRONIZED argument, which makes the hash-table safe for
1034 concurrent accesses (but not iteration.) See also:
1035 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1036 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1037 * optimization: CONCATENATE on strings is an order of magnitude faster
1038 in code compiled with (> SPEED SPACE).
1039 * optimization: SUBSEQ is ~50% faster on lists.
1040 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1041 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1042 END is smaller then START.
1043 * bug fix: SB-PROFILE will no longer report extra consing for nested
1044 calls to profiled functions.
1045 * bug fix: ROOM implementation had bogus fixnum declarations which
1046 could cause type-errors when calling ROOM on large images.
1047 * bug fix: if file compilation is aborted, the partial fasl is now
1048 deleted, and COMPILE-FILE returns NIL as the primary value.
1049 * bug fix: number of thread safety issues relating to SBCL's internal
1050 hash-table usage have been fixed.
1051 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1052 be returned from its body when the values were being returned
1053 using unknown-values return convection and the W-P-O was wrapped
1054 inside an UNWIND-PROTECT.
1055 * bug fix: sb-posix should now compile again under Windows, enabling
1056 slime to work again.
1058 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1059 * incompatible change: hash-table accessor functions are no longer
1060 automatically protected by locks. Concurrent accesses on the same hash-table
1061 from multiple threads can give inconsistent results or even corrupt the
1062 hash-table completely. Multi-threaded applications should do their own
1063 locking at the correct granularity. In the current implementation it is
1064 still safe to have multiple readers access the same table, but it's not
1065 guaranteed that this property will be maintained in future releases.
1066 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1067 and will signal an error at runtime.
1068 * enhancement: SB-THREAD package now exports a semaphore interface.
1069 * enhancement: CONS can now stack-allocate on x86 and
1070 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1072 * enhancement: nested lists can now be stack allocated on
1073 platforms providing stack allocation support.
1074 * enhancement: dynamic-extent support has been extended to support
1075 cases where there are multiple possible sources for the stack
1077 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1078 if the mutex is uncontested on Linux.
1079 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1080 as specified by the CLHS. (thanks to Tobias Rittweiler)
1081 * bug fix: NaN comparison now works on x86-64.
1082 * bug fix: CLOSE :ABORT T on a stream with pending output now
1084 * bug fix: instances of non-standard metaclasses using standard
1085 instance structure protocol sometimes missed the slot type checks
1087 * bug fix: known functions can be inlined in high-debug code.
1089 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1090 * minor incompatible change: the MSI installer on Windows no longer
1091 associates .lisp and .fasl files with the installed SBCL.
1092 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1093 on Windows. (thanks to Luis Oliviera)
1094 * new feature: SB-CLTL2 contrib module now implements
1095 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1096 * optimization: scavenging weak pointers is now more efficient,
1097 requiring O(1) instead of O(N) per weak pointer to identify
1098 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1099 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1100 method bodies using constant slot-names when the first argument is
1101 a specializer parameter for the method.
1102 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1103 names, when the class of the instance is a direct instance
1104 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1105 as slow as the constant slot-name case.)
1106 * optimization: member type construction is now O(N) instead
1108 * optimization: UNION and NUNION are now O(N+M) for large
1109 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1111 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1112 now more readable in environments like Slime which display it.
1113 (thanks to Tobias C. Rittweiler)
1114 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1115 was able to infer the correct argument type for the object on which
1116 the CAS operation was being performed.
1117 * bug fix: copy propagation interfered with parallel assignment
1118 semantics in local calls. (reported by Paul Khuong)
1119 * bug fix: the signed modular fixnum shift compiled to wrong code on
1120 x86 and x86-64. (spotted by a slight modification to some of
1123 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1124 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1125 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1126 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1128 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1129 and generic function now print the object identity for anonymous
1130 instances. (thanks to Attila Lendvai)
1131 * enhancement: as an extension to MOP, SBCL now supports SETF of
1132 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1133 (thanks to Attila Lendvai)
1134 * enhancement: sb-cover has an alternate annotation mode which puts
1135 the form annotations at the car of the form, instead of annotating
1136 it completely. The benefit of this mode is that it shows better
1137 which forms were instrumented by the compiler.
1138 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1139 by printer control variables. (reported by Dan Corkill)
1140 * bug fix: system leaked memory when delayed output was performed by
1141 the OS in smaller chunks then expected. (thanks to David Smith)
1142 * bug fix: system leaked memory when file streams were not closed
1144 * bug fix: large objects written to slow streams that were modified
1145 after the write could end up with the modified state written to
1146 the underlying file descriptor.
1147 * bug fix: multiple threads operating in parallel on the same stream
1148 could cause buffer-overflows.
1149 * bug fix: source location information is stored correctly
1150 (broken since 1.0.6). This bug would generally show up as the
1151 Slime debugger highlighting the wrong form when the sldb-show-source
1153 * bug fix: Branch forms are again annotated as branches in the sb-cover
1155 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1156 on x86-64. (reported by Gregory Vanuxem)
1157 * bug fix: EQUALP could return wrong results for structures with raw
1158 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1159 word). (reported by Vjacheslav Fyodorov)
1160 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1163 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1164 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1165 atomic compare-and-swap operations on threaded platforms.
1166 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1167 allows assigning a global minimum value to optimization qualities
1168 (overriding proclamations and declarations).
1169 * enhancement: closed over variables can be stack-allocated on x86
1171 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1173 * optimization: slot definition lookup is now O(1). This speeds up
1174 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1175 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1176 * optimization: ASSOC and MEMBER can now be open-coded for all
1177 combinations of keyword arguments when second argument is constant
1178 and SPEED >= SPACE. In other cases a specialized version is
1180 * bug fix: using obsoleted structure instances with TYPEP and
1181 generic functions now signals a sensible error.
1182 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1183 (reported by Kristoffer Kvello)
1184 * bug fix: backtrace construction is now more careful when making
1185 lisp-objects from pointers on the stack, to avoid creating bogus
1186 objects that can be seen by the GC.
1187 * bug fix: defaulting of values in contexts expecting more than 7
1188 variables now works on x86-64. (reported by Christopher Laux)
1189 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1191 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1192 as the property-list of a symbol.
1193 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1194 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1195 situations requested, are once again file-compileable. (reported
1198 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1199 * MOP improvement: support for user-defined subclasses of
1200 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1201 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1202 the expansion of DEFMETHOD, is responsible for generating a form
1203 which creates a list of specializers when evaluated. Additional
1204 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1205 debugging and introspective support.
1206 * minor incompatible change: the (unsupported) spinlock interface
1207 has changed: free spinlock now has the value NIL, and a held spinlock
1208 has the owning thread as its value.
1209 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1210 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1212 * enhancement: name of a socket-stream is now "a socket" instead of
1213 "a constant string".
1214 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1215 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1216 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1217 for generic functions. (Thanks to Tobias C. Rittweiler)
1218 * optimization: bignum printing speed has been improved by 20-40%
1219 (depending on the bignum size.)
1220 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1222 * bug fix: the cache used by the CLOS to store precomputed effective
1223 methods, slot offsets, and constant return values is now thread and
1225 * bug fix: generic function dispatch function updating is now thread
1226 and interrupt safe (in the sense that the known issues have been
1228 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1229 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1230 * bug fix: asdf systems with dependencies to the SB-POSIX or
1231 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1232 * bug fix: interrupt safety of applicable method computation has been
1235 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1236 * new contrib: sb-cover, an experimental code coverage tool, is included
1237 as a contrib module.
1238 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1239 significantly faster.
1240 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1241 produce more efficient code on x86-64 if the compiler can determine
1242 that (+ INDEX <constant>) does not require a bounds check and FOO
1243 has an element type at least 8 bits wide.
1244 * enhancement: a new, experimental synchronous timeout facility is
1245 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1246 * enhancement: when a symbol name conflict error arises, the
1247 conflicting symbols are always printed with a package prefix.
1248 (thanks to Kevin Reid)
1249 * enhancement: stepping is now once again supported on the SPARC and
1250 MIPS platforms. (It is also now more likely to work on CheneyGC
1252 * enhancement: sb-sprof can now also track and report accurate call
1254 * bug fixes: the treatment of non-standard subclasses of
1255 SB-MOP:SPECIALIZER is more correct.
1256 * incompatible change: PURIFY no longer copies the data from the
1257 dynamic space into the static and read-only spaces on platforms
1258 that use the generational garbage collector
1259 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1261 * bug fix: GC race condition occasionally resulting in crashes with
1262 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1264 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1266 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1267 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1268 * bug fix: an asynchronous interrupt could previously leave the
1269 system running with GC inhibited.
1270 * bug fix: a DECLARE form evaluated at top-level now causes an error
1271 rather than silently (or verbosely) returning NIL.
1272 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1273 result in a error being signalled due to source form lookup errors.
1274 (reported by Peter Graves)
1276 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1277 * incompatible change: removed writer methods for host-ent-name,
1278 host-ent-addresses -- changing the values did not update the DNS
1280 * minor incompatible change: changed experimental JOIN-THREAD interface
1281 * documentation: the manual now lists reader and writer methods
1282 in class slot documentation sections. (thanks to Richard M Kreuter)
1283 * documentation: unwinding from asyncronous events has been
1284 documented as unsafe.
1285 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1286 in multithreaded application code.
1287 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1288 platforms. (thanks to James Anderson for the optimization hint)
1289 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1291 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1292 variants no longer cons.
1293 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1294 their NOT- variants no longer cons.
1295 * optimization: EQUAL hash tables no longer use SXHASH for objects
1296 of all data types, but instead use an EQL hash for types for which
1297 EQUAL is the same as EQL.
1298 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1299 are significantly faster.
1300 * optimization: new STRING-OUTPUT-STREAM implementation is much
1301 faster for large outputs and conses 30% less on average.
1302 * enhancement: XREF information is now collected for references made
1303 to global variables using SYMBOL-VALUE and a constant argument.
1304 * enhancement: SIGINT now causes a specific condition
1305 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1306 * bug fix: FILE-POSITION used to signal an error in some cases where
1307 ANSI requires it to return NIL.
1308 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1309 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1310 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1312 * bug fix: bad type declaration in the CLOS implementation has
1313 been fixed. (reported by James Anderson)
1314 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1315 (thanks to Lutz Euler)
1316 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1317 required by the CLHS. (reported by Samium Gromoff)
1318 * bug fix: dead unbound variable references now signal an error.
1319 (reported by Marco Monteiro)
1320 * bug fix: / with an unused value was being deleted in safe code.
1321 (thanks to Marco Monteiro and Kevin Reid)
1322 * bug fix: number of characters that can be written onto a single
1323 line in a file is unlimited.
1324 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1325 been fixed by inhibiting interrupts for when GC is disabled.
1326 * bug fix: some interrupt safety issues with GETHASH, (SETF
1327 GETHASH), CLRHASH and REMHASH have been fixed.
1328 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1329 specifier no longer causes infinite recursion.
1330 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1331 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1332 * bug fix: an &environment argument with the correct variable information
1333 is passed to macros that are expanded during byte compilation.
1334 (reported by Samium Gromoff)
1335 * bug fix: a logic error was causing the hash function for bignums to
1336 have excessive amounts of collisions. (reported by Faré Rideau)
1337 * bug fix: modifying the contents of an array could change the return
1338 value of SXHASH on that array, which is only allowed for strings
1339 and bit vectors. (bug introduced in 0.9.16)
1340 * improvement: the x86-64/darwin port now passes all tests (except
1341 for the debugger tests) but should still be considered
1342 experimental until this is fixed.
1343 * improvement: a style-warning is signaled for CASE (etc) clauses with
1344 duplicate keys. (thanks to Kevin Reid)
1345 * improvement: macos/x86 and macos/x86-64 now use mach exception
1346 handlers for dealing with illegal instructions (for trapping and
1347 error handling) and memory protection violations (for GC).
1349 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1350 * new platform: experimental support for x86-64/darwin (MacOS).
1351 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1352 and getnameinfo sockets functions are used instead of gethostbyaddr
1353 and gethostbyname, on platforms where the newer functions are available.
1354 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1356 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1357 don't print the startup banner, but behave as if --noinform was passed
1358 as a command line argument. (thanks to Kevin Reid)
1359 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1360 * optimization: code using alien values with undeclared types is much faster.
1361 * optimization: the compiler is now able to open code SEARCH in more cases.
1362 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1363 * bug fix: using standardized COMMON-LISP special variables as loop
1364 variables no longer signals bogus package lock violations. (reported
1366 * bug fix: declaring local loop variables to be of a range-limited type
1367 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1368 (reported by Andras Simon)
1369 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1370 bugs remain on x86-64.)
1371 * bug fix: the #= and ## reader macros now interact reasonably with
1372 funcallable instances.
1373 * bug fix: type-checks for function arguments were compiled using the
1374 compiler policy settings of the wrong lexical environment (in 1.0.2
1376 * bug fix: SHADOW accepts characters as string designators, as required
1377 by the spec (thanks to Eric Marsden)
1378 * bug fix: fixed GC safety issues when foreign functions are called with
1379 non-base strings as arguments
1380 * bug fix: more consistent error output for fatal-compiler-warnings, like
1382 * bug fix: functions with proper names were showing up as NIL in
1383 backtraces (reported by Edi Weitz, regression in 1.0.2)
1385 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1386 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1387 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1388 produce more efficient code on the x86 if the compiler can determine
1389 that (+ INDEX <constant>) does not require a bounds check and FOO
1390 has an element type at least 8 bits wide.
1391 * bug fix: references to undefined variables are handled the same way
1392 in toplevel forms as in the normal compiler
1393 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1395 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1396 (thanks to Jon Buller)
1397 * improvement: faster compilation times for complex functions
1398 * improvement: added readlink support to SB-POSIX (thanks to Richard
1401 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1402 * improvement: experimental support for mach exception handling on
1403 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1405 * improvement: support for GBK external format.
1406 (thanks to Chun Tian (binghe))
1407 * improvement: the debugger now displays variables that have been closed
1408 over, in code compiled with (DEBUG 2) or higher
1409 * improvement: support for executable cores on NetBSD (thanks to
1411 * new feature: added a RESTART-FRAME debugger command
1412 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1413 be used to provide an implementation for FILE-POSITION on Gray streams
1414 (thanks to Eric Marsden)
1415 * new feature: add syslog, openlog and closelog support to SB-POSIX
1416 (thanks to Richard Kreuter)
1417 * optimization: the function call overhead in code compiled with
1418 a high DEBUG optimization setting is significantly
1419 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1420 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1421 (thanks to Tony Martinez)
1422 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1423 evaluated once (reported by Kevin Reid)
1424 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1425 works again (thanks to Kilian Sprotte)
1426 * bug fix: an error is signaled for tagbodies with duplicate tags
1427 (thanks to Stephen Wilson)
1428 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1429 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1430 stack frames from alien callbacks.
1431 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1432 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1433 65k pages (thanks to David Woodhouse)
1434 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1436 changes in sbcl-1.0.1 relative to sbcl-1.0:
1437 * new platform: FreeBSD/x86-64, including support for threading.
1438 * new feature: the compiler stores cross-referencing information
1439 about function calls (who-calls), macroexpansion (who-macroexpands)
1440 and special variables (who-binds, who-sets, who-references) for code
1441 compiled with (< SPACE 3). This information is available through the
1442 sb-introspect contrib.
1443 * new feature: users may subclass SEQUENCE, and have instances of
1444 these classes interoperate with standard Common Lisp functions if
1445 a number of methods are defined. (This feature is experimental
1446 and the interface subject to change based on feedback from SBCL
1447 users and the general community)
1448 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1449 x86/x86-64, rather than the previous fixed depth of 8
1450 * improvement: another pthread back-end of mutex "pthread-futex".
1451 * bug fix: non-ascii command-line arguments are processed correctly
1452 (thanks to Yaroslav Kavenchuk)
1453 * bug fix: non-required arguments were not passed correctly when a method
1454 defined using DEFMETHOD was called from a mop-generated method using
1455 CALL-NEXT-METHOD (reported by Pascal Costanza)
1456 * bug fix: recursion is now permitted in accessors through
1457 SLOT-UNBOUND. (reported by Pascal Costanza)
1458 * bug fix: an error was signaled at startup if the HOME environment
1459 variable was defined, but had an empty value (reported by Peter Van Eynde)
1460 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1461 signal a PROGRAM-ERROR, not a BUG.
1462 * bug fix: SB-POSIX:READDIR works when built with large file support.
1463 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1465 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1466 for better automatic indentation support. (thanks to Matt Pillsbury)
1467 * optimization: loading generic functions no longer takes O(n^2) time,
1468 proportional to the amount of methods in the generic function
1469 (reported by Todd Sabin and Jeremy Brown)
1470 * optimization: the FIND and POSITION family of sequence functions
1471 are significantly faster on arrays whose element types have been
1473 * improvements to the Windows port:
1474 ** Intermittent heap corruption problems have been fixed. (thanks
1475 to Alastair Bridgewater)
1476 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1478 ** Lisp is able to unwind foreign exception frames from alien
1479 callbacks. (thanks to Alastair Bridgewater)
1481 changes in sbcl-1.0 relative to sbcl-0.9.18:
1482 * improvement: experimental support for threading on FreeBSD/x86.
1483 (thanks to NIIMI Satoshi)
1484 * improvement: runtime option --dynamic-space-size can be used
1485 to set the size of the dynamic space reserved on startup.
1486 * improvement: floating point modes in effect are now saved in
1487 core, and restored on startup.
1488 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1489 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1490 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1491 threads are not running after *SAVE-HOOKS* have run.
1492 * improvement: writes to CLOS instance slots are type-checked in code
1493 compiled with (SAFETY 3)
1494 * improvement: floating-point exception handling on FreeBSD (thanks to
1496 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1497 (thanks to Zach Beane)
1498 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1500 * improvement: added support for the Shift-JIS external format.
1501 (contributed by NIIMI Satoshi)
1502 * improvement: callbacks are supported on Linux/PPC. (thanks to
1504 * bug fix: compiler bug triggered by a (non-standard) VALUES
1505 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1506 * bug fix: file compiler no longer confuses validated and already
1507 dumped structurres. (reported by Kaersten Poeck)
1508 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1509 fill-pointer signals a type-error as required. (thanks to
1511 * bug fix: disassemly of funcallable instances works.
1512 * bug fix: single stepping on PPC.
1513 * bug fix: fix thread-safety problems in the type system (generally
1514 manifesting as nonsensical errors like "STRING is a bad type specifier
1515 for sequences" or "The value 1 is not of type FIXNUM")
1516 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1517 (reported by Josip Gracin)
1518 * bug fix: an error is signaled for attempts to displace arrays with
1519 incompatible element types (thanks to Mario Mommer)
1520 * bug fix: more correct handling of wide characters in debug info
1521 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1522 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1523 and don't cause extra consing
1524 * optimization: MAP and MAP-INTO are significantly faster on vectors
1525 whose elements types have been declared.
1526 * Improvements to SB-SPROF:
1527 ** Support for allocation profiling
1528 ** Reduced profiling overhead, especially for long profiling runs
1529 * Improvements to the Windows port:
1530 ** floating point exceptions are now reported correctly.
1531 ** stack exhaustion detection works partially.
1532 ** more accurate GET-INTERNAL-REAL-TIME.
1533 ** better RUN-PROGRAM behaviour in case of errors in the child
1535 ** PROBE-FILE now simplifies pathnames correctly.
1536 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1537 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1538 1st 1970 (although time timezone data will be unreliable).
1539 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1541 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1542 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1543 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1545 * bug fix: two potential GC deadlocks affecting threaded builds.
1546 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1547 returns T (reported by Anton Kazennikov)
1548 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1549 with non-variable places
1550 * bug fix: remove a race condition in the setting of
1551 funcallable-instance functions, this should make threaded CLOS
1552 code more stable against memory faults.
1553 * bug fix: corruption of specials when unbinding is interrupted by an
1554 asynchronous unwind (reported by Hannu Koivisto)
1555 * improvement: the debugger will now also display local variables that
1556 are only used once, for code compiled with a DEBUG optimization quality
1559 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1560 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1561 * incompatible change: External-format support for FFI calls. The
1562 SB-ALIEN:C-STRING no longer implies an ASCII
1563 external-format. Instead the string is subject to external-format
1564 conversion. Additionally return values of type SB-ALIEN:C-STRING
1565 are by default of type (SIMPLE-ARRAY CHARACTER), not
1566 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1567 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1568 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1569 * incompatible change: SB-EXT package no longer contains the
1570 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1571 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1573 * incompatible change: the single-stepper is no longer available
1574 on Alpha, Mips and Sparc platforms.
1575 * minor incompatible change: the direct superclasses of
1576 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1577 not (STANDARD-OBJECT FUNCTION). This makes the
1578 class-precedence-lists of GENERIC-FUNCTION and
1579 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1581 * minor incompatible change: the default stream external format on
1582 non-unicode SBCL is no longer detected from the locale, but is always
1584 * new feature: Add a version of evaluator that uses an interpreter instead
1585 of the compiler. EVAL still uses the compiler by default, to switch it
1586 to use the interpreter, set the value of the variable
1587 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1588 * minor incompatible change: the single-stepper REPL has been merged
1589 with the normal debugger (see the "Stepping" heading of the debugger help
1590 for more details). The debugger command STEP will no longer switch
1591 to the single-stepper REPL.
1592 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1593 for a type now works.
1594 * bug fix: loading of default sysinit file works. (thanks to Leonid
1596 * bug fix: better detection of circularities in the file-compiler.
1597 (reported by Marco Monteiro)
1598 * bug fix: the CL pathname functions now work with files that have
1599 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1600 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1601 systems with Unix98 pty semantics.
1602 * bug fix: ASDF-INSTALL will now work with bsd tar.
1603 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1605 * bug fix: timers expiring in dead threads no longer cause a
1606 type-error (reported by Paul "Nonny Mouse").
1607 * bug fix: thanks to more lightweight single-stepper instrumentation,
1608 code compiled with (DEBUG 3) will compile and execute significantly faster,
1609 and will have more accurate type-inferencing than before
1610 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1611 whose bindings are modified
1612 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1613 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1614 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1615 CL:SOFTWARE-VERSION with proper version
1617 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1618 * feature: implemented the READER-METHOD-CLASS and
1619 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1620 as specified by AMOP.
1621 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1623 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1624 (thanks to Lutz Euler)
1625 * optimization: hashing of general arrays and vectors has been
1626 improved. (reported by Any Fingerhut)
1627 * enhancement: SB-INTROSPECT is now able to find definitions of
1628 profiled functions. (thanks to Troels Henriksen)
1629 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1630 as well, allowing compiler-macros for SETF-functions to expand.
1631 * enhancement: step-instrumentation no longer wraps known
1632 single-value functions with multiple-value context, allowing
1633 better type inference.
1634 * fixed bug #337: use of MAKE-METHOD in method combination now works
1635 even in the presence of user-defined method classes. (reported by
1636 Bruno Haible and Pascal Costanza)
1637 * fixed bug #339(c): if there are applicable methods not part of any
1638 long-form method-combination group, call INVALID-METHOD-ERROR.
1639 (reported by Bruno Haible)
1640 * fixed bug #361: the :FUNCTION initarg in the protocol for
1641 initialization of methods can now be used to override
1642 internally-produced optimized functions. (reported by Bruno
1644 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1645 system-provided lambda expression no longer cause warnings about
1646 unbound #:|pv-table| symbols.
1647 * bug fix: improved the handling of type declarations and the
1648 detection of violations for keyword arguments with non-constant
1650 * bug fix: potentially erronous calls to PATHNAME and
1651 MERGE-PATHNAMES were being flushed in some cases.
1652 (reported by Richard Kreuter)
1653 * bug fix: compiled calls to TYPEP were mishandling obsolete
1654 instances. (reported by James Bielman and Attila Lendvai)
1655 * bug fix: format strings with ~> without matching ~< no longer
1656 trigger an AVER, but signal an understandable error instead.
1657 (reported by Antonio Martinez)
1658 * bug fix: specifying an output-file without a pathname-type for
1659 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1660 of input-file instead of "fasl". (reported by Robert Dodier)
1661 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1662 (reported by James Y Knight).
1663 * bug fix: compiler-macros-function did not consider the environment
1664 argument for shadowing by local functions.
1665 * bug fix: compiler-macros expansion was inhibited by local INLINE
1667 * bug fix: inline expansions of known functions were subject to
1668 step-instrumentation in high debug policies, leading to problems
1669 with type-inference.
1670 * bug fix: compiler failed to differentiate between different CONS
1671 types in some cases.
1672 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1673 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1674 * bug fix: #368: incorrect use of expressed vs. upgraded array
1676 * bug fix: #306a: more precise unions of array types.
1677 * thread-safety improvements:
1678 ** CONDITION-WAIT could return early on Linux, if the thread was
1679 interrupted and subsequently continued with SIGCONT.
1680 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1682 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1683 * added support for the ucs-2 external format. (contributed by Ivan
1685 * minor incompatible change: pretty printing of objects of type
1686 (cons symbol) is, in the default pprint-dispatch-table, now
1687 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1689 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1690 called later in a class's lifetime, possibly as late as when the
1691 first instance of the class is created. Previously,
1692 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1693 class became finalizeable.
1694 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1695 for multibyte external-format streams. (thanks to "vbzoli")
1696 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1697 with :ALLOCATION :CLASS inherited from superclasses of the
1699 * fixed bug: anonymous classes can now be created using the :NAME
1700 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1701 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1702 * fixed bug: core-files saved with :EXECUTABLE T can again be
1703 executed when SBCL_HOME isn't set. (reported by James Knight)
1704 * fixed bug: toplevel LOCALLY forms with declarations could
1705 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1706 * fixed bug: printing from several different threads using different
1707 values of *print-case* could cause invalid output, due to
1708 some internal special variables of the printer not being bound
1709 thread-locally (reported by Max Mikhanosha)
1710 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1711 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1712 (reported by Pascal Costanza)
1713 * fixed bug: FINALIZE-INHERITANCE is called from
1714 REINITIALIZE-INSTANCE on classes when the class has previously
1715 been finalized, as required by AMOP.
1716 * minor code generation optimizations:
1717 ** better register allocation in CLOS dispatching functions
1718 ** overflow detection when coercing signed bytes to fixnums on x86-64
1719 ** is now implemented with one IMUL instruction instead of three shifts
1720 ** more efficient bit-vector access on x86 and x86-64
1721 ** more efficient access to raw structure slots on x86 and x86-64
1722 * fixed some bugs revealed by Paul Dietz' test suite:
1723 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1724 return its argument.
1726 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1727 * feature: thread support on Solaris/x86, and experimental thread support
1729 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1731 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1732 default method for SLOT-UNBOUND.
1733 * minor incompatible change: prevent the user from specializing the
1734 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1735 somewhat counter to the intent of the protocol, I (CSR) think, and
1736 additionally it just doesn't work in SBCL as currently
1737 implemented, thanks to optimizations (that are always valid for
1738 the other three SLOT-VALUEish functions, but not for the setter).
1739 * minor incompatible change: the :SB-LDB feature is now enabled by
1740 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1741 the low-level debugger.
1742 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1743 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1744 down to an SB-SYS:FD-STREAM, allowing direct communication in
1745 more cases. Temporary files and pipes are still used as a fallback
1747 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1748 on the non-reentrant C functions localtime(3) and gmtime(3).
1749 * bug fix: global optimization policy was not visible in LOCALLY and
1751 * bug fix: class objects can be used as specializers in methods.
1752 (reported by Pascal Costanza)
1753 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1754 with a type error. (reported by blitz_ on #lisp)
1755 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1756 failed with a type error. (reported by Pascal Bourguignon)
1757 * bug fix: merging pathnames against defaults with :DIRECTORY
1758 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1759 (reported by James Y Knight)
1760 * bug fix: saving large (>2GB) cores on x86-64 now works
1761 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1762 constant index and a (simple-array (signed-byte 32)) array
1763 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1764 error (patch by Robert J. Macomber)
1765 * feature: TIME now displays the amount of run-time spent in GC
1766 * bug fix: The debugger now does a better job of respecting
1767 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1768 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1769 workaround for bug 403.)
1770 * bug fix: floating point exception handling now works on FreeBSD
1771 (thanks to NIIMI Satoshi)
1772 * fixed some bugs revealed by Paul Dietz' test suite:
1773 ** MISC.641: LET-conversion were not supposed to work in late
1775 * improvements to the Win32/x86 port:
1776 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1777 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1779 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1780 * new feature: source path information is generated for macro-expansion
1781 errors for use in IDE's like Slime (thanks to Helmut Eller)
1782 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1783 * bug fix: compiler does not loop forever on an invalid type in
1785 * improvement: compilation of most CLOS applications is significantly
1787 * optimization: added a limited bytecode compiler for simple toplevel
1788 forms, speeding up compilation and FASL loading
1789 * bug fix: the statistical profiler now properly distinguishes anonymous
1792 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1793 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1794 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1795 into subclasses of the finalized class. Now user calls to
1796 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1797 system return before any subclasses are finalized.
1798 * minor incompatible change: The reader no longer ignores errors
1799 regarding non-existent packages in #+ and #- feature tests.
1800 * new feature: command line options --no-sysinit, --no-userinit to
1801 inhibit loading the corresponding init files
1802 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1803 for sending data through UDP sockets (thanks to François-René Rideau)
1804 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1805 error is signalled instead (thanks to François-René Rideau)
1806 * minor incompatible change: Error signalling behaviour of lexical
1807 operations violating package locks has changed slightly. Refer to
1808 documentation on package locks for details.
1809 * enhancement: EVAL can process IF-expressions without resorting to the
1811 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1812 constant-folded properly due to missing out-of-line functions.
1813 (reported by Mika Pihlajamäki)
1814 * bug fix: LISTEN sometimes returned T even in cases where no data was
1815 immediately available from the stream
1816 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1817 were reversed. (reported by Levente Mészáros)
1818 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1819 when given a vector displaced to an adjustable array. (reported
1821 * bug fix: derivation of float boundaries from numbers outside the
1822 appropriate float range (reported by John Wiseman)
1823 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1825 * bug fix: precomputing cache entries for generic functions with
1826 some subclasses of specializers as yet invalid does not attempt to
1827 fill a cache line with a negative offset. (reported by Levente
1829 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1830 allow condition class objects as arguments to DOCUMENTATION and
1831 (SETF DOCUMENTATION); only find and set documentation for
1832 structure names for the STRUCTURE doc-type. (suggested by Gary
1834 * improvements to the Win32/x86 port:
1835 ** (user-homedir-pathname) and default initialization file
1836 locations now know about the user's "Documents and Settings"
1837 directory (thanks to Yaroslav Kavenchuk)
1838 ** run-program is implemented (thanks to Mike Thomas)
1839 ** sockets support (thanks to Timothy Ritchey)
1840 ** better backtrace support (thanks to Alastair Bridgewater)
1841 ** sb-grovel supported
1842 ** asdf-install and sb-posix work somewhat
1843 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1844 * improvements to the Solaris/x86 port:
1845 ** works on Solaris 11/Solaris Express
1846 ** floating-point exception handling support
1847 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1848 * fixed some bugs revealed by Paul Dietz' test suite:
1849 ** REMOVE-METHOD returns its generic function argument even when
1850 the method is not one of the generic functions' methods.
1851 ** objects declared as MEMBER types can be admissible arguments to
1852 structure accessors.
1853 ** printing characters should simply be printed by the FORMAT ~:C
1855 ** compiler failure when compiling functions with hairy constant
1856 defaults for optional parameters.
1857 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1858 function, which is already optimized.
1860 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1861 * new platform: experimental support for SBCL x86/Darwin, including
1862 MacOS X 10.4.5 on Intel.
1863 * new feature: Unicode character names are now known to the system
1864 (through CHAR-NAME and NAME-CHAR).
1865 * new feature: the filesystem location of SBCL's core file is
1866 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1867 * minor incompatible change: the contrib modules SB-POSIX and
1868 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1869 this change is to make it easier to distribute
1870 location-independent binaries.
1871 * bug fix: as implied by AMOP, standardized classes no longer have
1872 slots named by external symbols of public packages. (reported by
1874 * optimization: calling functions via constant symbols -- as in
1875 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1876 via the function object as in (FUNCALL #'FOO).
1877 * optimization: on x86 and x86-64, the calling convention for the
1878 case of dealing with an unknown number of values has been altered
1879 to be friendlier to the prediction heuristics implemented,
1880 particularly with reference to CALL and RET pairing. (thanks to
1881 Alastair Bridgewater)
1882 * optimization: on x86, the code for access to thread-local symbol
1883 values and binding/unbinding of thread-local symbols is smaller.
1884 (thanks to Alastair Bridgewater)
1885 * enhancement: CONSTANTP is now able to determine constantness of
1886 more complex forms, including calls to constant-foldable standardized
1887 functions and some special forms beyond QUOTE.
1888 * fixed bug: occasional GC crashes on Solaris/x86
1889 * optimization: x86-64 supports stack allocation of results of simple
1890 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1891 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1892 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1893 (thanks to James Knight)
1894 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1895 by the standard (thanks to Stephen Compall)
1897 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1898 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1899 be used for bundling the runtime and the core file into one
1900 executable binary. This feature is not currently supported on all SBCL
1901 platforms. (thanks to James Bielman and NIIMI Satoshi)
1902 * new feature: a generational or ephemeral garbage collector is now
1903 the default on the PowerPC platform (both Linux and Darwin). The
1904 old Cheney (stop and copy) collector is a build-time option.
1905 (thanks to Cyrus Harmon, after Raymond Toy)
1906 * minor incompatible change: the method by which SBCL finds its
1907 contributed modules has changed; it no longer relies on symbolic
1908 links from an $SBCL_HOME/systems directory, but searches directly
1909 in the subdirectories of $SBCL_HOME.
1910 * enhancement: the dynamic heap size on the Linux/PPC platform is
1911 markedly larger, even using the older Cheney garbage collector.
1912 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1913 certain complicated string types. (reported by Gary King)
1914 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1915 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1916 * fixed bug: DOCUMENTATION on structures no longer signals an
1917 error if no structure type of the right name exists. (reported by
1919 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1920 applicable non-standard primary or :AROUND method on
1921 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1922 no longer cause unbound variable errors. (reported by Kevin Reid)
1923 * fixed bug: metacircle resolution in cases where methods have slots
1924 added before the slots from STANDARD-METHOD. (reported by Jean
1926 * fixed bug: the Power PC assembly code for calling into lisp
1927 sometimes computed its return address wrongly (depending on the
1928 15th bit of the address, fixed at link time). This used to
1929 manifest itself in a segmentation violation while building PCL.
1930 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1931 many others over the years)
1932 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1933 the stack pointer (treated as a signed integer) is negative.
1934 (thanks to Peter van Eynde)
1936 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1937 * new platform: experimental support for the Windows operating
1938 system has been added. (thanks to Alastair Bridgewater)
1939 * fixed several bugs in and robustified the PPC FFI (including
1940 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1941 * bug fix: allow non-simple string symbol names (reported by Paul
1943 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1945 * bug fix: saving a core corrupted callbacks on x86/x86-64
1946 * bug fix: closed a loophole in metacircularity detection and
1947 grounding in the PCL implementation of CLOS.
1948 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1949 (reported by tomppa on #lisp)
1950 * bug fix: clear the direction flag on Lisp -> C transitions, as
1951 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1952 (reported by Andrej Grozin and Hendrik Maryns)
1953 * optimization: major improvements to GC efficiency on GENCGC platforms
1954 * optimization: faster implementation of EQUAL
1955 * optimization: emit more efficient opcodes for some common
1956 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1957 * optimization: several other minor code-generation improvements on x86-64
1958 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1960 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1961 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1962 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1963 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1964 by ANSI as a generic function, and for consistency (SETF
1965 GENERIC-FUNCTION-NAME) is treated likewise.
1966 * fixed bug #233.b: make constraint propagation notice when a variable
1967 value is changed after it is referenced but before it is used
1968 * fixed bug #296: no more arbitrary behaviour from filenames with
1969 odd characters as --load arguments. (reported by Adam Warner)
1970 * fixed bug #390: :CHARACTER-SET pathname components now work as
1971 expected. (reported by Tim Daly Jr)
1972 * fixed bug #391: complicated :TYPE intersections in slot
1973 definitions no longer cause an error in PCL internals.
1974 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1975 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1976 returning the number of octets which would be written to the
1977 file-stream. (thanks to Robert J. Macomber)
1978 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1979 arguments to the internal stream functions. (thanks to David
1981 * bug fix: stack exhaustion is now handled on the x86/SunOS
1982 platform. (thanks to Daisuke Homma)
1983 * bug fix: more accurate ROOM results on GENCGC platforms
1984 * optimization: improved type inference for arithmetic-for
1985 index variables in LOOP
1986 * optimization: faster floating-point SQRT on x86-64
1987 * fixed some bugs revealed by Paul Dietz' test suite:
1988 ** DOCUMENTATION returns NIL instead of "" for method combinations
1989 that don't have a docstring
1991 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1992 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1993 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1994 therefore are not customizeable by user code (as seems to be at
1995 least permitted and maybe required by AMOP). As a consolation,
1996 however, the SBCL implementation of these functions now calls
1997 REINITIALIZE-INSTANCE as specified by AMOP.
1998 * bug fix: slot-definition documentation is propagated as per ANSI
1999 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2000 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2001 argument, as do eslotd initialization methods. (from Pascal
2002 Costanza's "Closer" project)
2003 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2004 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2006 * bug fix: it is now possible to have more than one subclass of
2007 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2008 (reported by Bruno Haible, Pascal Costanza and others)
2009 * bug fix: the dependent update protocol now works for generic
2010 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2011 and Pascal Costanza)
2012 * bug fix: condition-class instances corresponding to
2013 DEFINE-CONDITION forms are now created eagerly. (reported by
2014 Kalle Olavi Niemitalo on comp.lang.lisp)
2015 * bug fix: floating point printing is more accurate in some
2016 circumstances. (thanks to Simon Alexander)
2017 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2018 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2019 * bug fix: callbacks on OS X now preserve stack-alignment.
2020 (thanks to Cyrus Harmon)
2021 * enhancement: the x86-64 disassembler is much better at
2022 disassembling SSE instructions. (thanks to Lutz Euler)
2023 * enhancement: CHECK-TYPE on a variable now allows type-inference
2024 (thanks to Vincent Arkesteijn)
2025 * optimization: improved performance of EUC-JP external format.
2026 (thanks to NIIMI Satoshi)
2027 * optimization: performance improvements to IO on file streams of
2028 :ELEMENT-TYPE CHARACTER
2029 * optimization: much faster memory allocation on x86-64
2030 * optimization: faster garbage collections (latency and throughput)
2032 * optimization: faster bignum subtraction and division on x86 and x86-64
2033 (thanks to Lutz Euler)
2034 * optimization: more accurate type-inference for loops that use a
2035 floating point index variable or a negative step.
2037 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2038 * bug fix: add a workaround to SBCL looping infinitely at startup on
2039 Linux kernels with apparently buggy implementations of personality().
2040 (thanks to Svein Ove Aas)
2041 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2042 (thanks to David Lichteblau)
2043 * bug fix: local bindings shadow global symbol macros for
2044 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2045 * optimization: non-open coded uses of numeric comparison operators
2046 (e.g. >) no longer cons when called with more than one parameter
2047 on platforms supporting dynamic-extent allocation.
2048 * enhancement: saving cores with foreign code loaded is now supported
2049 on MIPS/Linux in addition to the previously supported platforms.
2050 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2051 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2052 * bug fix: division by zero in sb-sprof when no samples were collected
2053 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2054 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2055 (thanks to Alexander Kjeldaas)
2056 * new feature: ignoring the return values of destructive functions
2057 like NREVERSE signals a compile-time style-warning.
2058 (thanks to Kevin Reid)
2059 * new feature: the alignment of alien structure fields can be
2060 explicitly specified. (thanks to Cyrus Harmon)
2061 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2062 and dump core on SIGQUIT
2064 ** incompatible change: threads do not inherit values of specials
2065 from their parents (see manual)
2066 ** bug fix: threads stacks belonging to dead threads are freed by the
2067 next exiting thread, no need to gc to collect thread stacks anymore
2068 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2069 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2070 ** bug fix: dynamic variable and thread start related gc lossage
2071 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2073 * fixed some bugs revealed by Paul Dietz' test suite:
2074 ** SUBTYPEP is slightly more accurate on heinously complicated
2075 CONS types where some of the members have uncertain (in the
2076 NIL, NIL sense) type relationships to each other.
2078 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2079 no longer purified unless :PURIFY T is explicitly specified.
2080 ** Non-purified cores are significantly smaller than before
2082 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2083 * new feature: timers based on Zach Beane's excellent timer package
2084 * added support for the following external formats: koi8-u,
2085 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2086 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2087 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2088 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2089 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2090 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2091 * incompatible change: a threaded SBCL will no longer revert to
2092 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2093 * bug fix: interrupts are disabled until startup is complete; no
2094 more sigsegvs when receiving a signal to soon
2095 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2097 * bug fix: add a workaround for the memory randomization features in
2098 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2099 workaround will only be in effect on systems with the proc filesystem
2101 * bug fix: printing objects of type HASH-TABLE signals a
2102 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2104 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2105 have been running for over 50 days. (reported by Gilbert Baumann)
2106 * bug fix: the logic for getting names of functions gets less
2107 confused when confronded with alternate-metaclass
2108 funcallable-instances. (reported by Cyrus Harmon)
2109 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2110 consistent, even on internal alternate-metaclass objects.
2111 * bug fix: flush closure information collected by physical
2112 environment analysis prepass before the main pass. (bug reported
2114 * bug fix: compiler pack phase does not modify a hashtable, which is
2115 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2116 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2117 may be expanded. (reported by Alexander <malishev> on c.l.l)
2118 * bug fix: no more style-warnings when compiling code using LAST
2119 under high-SPEED low-SPACE settings. (reported by David Wallin
2121 * fixed some incompatibilities between SBCL's MOP and the MOP
2123 ** the METAOBJECT class is now implemented;
2124 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2125 STANDARD-OBJECT, as required;
2126 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2127 now compatible (as required by VALIDATE-SUPERCLASS); there
2128 remains a consistency requirement over the presence or absence
2129 of the FUNCTION class in the superclass list of finalized
2130 classes; see the manual for more details;
2131 ** the :AROUND method for COMPUTE-SLOTS on
2132 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2133 requested slot ordering.
2135 ** bug fix: parent thread now can be gc'ed even with a live
2137 ** bug fix: binding a special with PROGV to no value is not
2138 the same as that symbol not having been bound (thanks to
2140 ** bug fix: binding specials is thread safe (thanks to
2142 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2143 and SB-SPROF do not die with 'no handler for signal XX in
2144 interrupt_handle_now(..)' anymore
2145 ** bug fix: WITH-TIMEOUT works with multiple running threads
2146 * fixed some bugs revealed by Paul Dietz' test suite:
2147 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2148 the :method-class keyword argument.
2150 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2151 * new port: the Solaris operating system on x86 processors is now
2152 mostly supported, though some rough edges in the environment
2153 remain. (thanks to Daisuke Homma)
2154 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2155 space for its heap. (thanks to Thiemo Seufer)
2156 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2157 closures. (thanks to Thiemo Seufer)
2158 * minor incompatible change: eof selects abort in the debugger.
2159 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2160 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2162 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2163 deprecated, and will go away in a future revision of SBCL.
2164 * minor incompatible change: GC-ON and GC-OFF are no longer
2165 implemented with a counter, it does not matter how many times gc
2166 is switched on or off
2167 * bug fix: discriminating functions for generic function classes
2168 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2169 make invalid assumptions about method precedence order. (reported
2171 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2172 platforms. (thanks to Thiemo Seufer)
2173 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2174 * bug fix: correct pathname printing with printer escaping is on.
2175 (thanks to Kevin Reid)
2176 * bug fix: complex VOP definitions in "user-space" no longer trigger
2177 package locks. (reported by Zach Beane)
2178 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2179 for funcallable-instance functions, and is no different from
2181 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2182 characters in the current readtable. (reported by Nicholas Neuss)
2183 * bug fix: SUBTYPEP on various CONS types returns more a more
2184 accurate acknowledgment of its certainty.
2185 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2186 lists in some cases. This partially fixes bug 384.
2187 * flush all standard streams before prompting in the REPL and the
2189 * bug fix: signal handling and triggering gc do not conflict
2190 directly anymore, in particular a high frequency sb-sprof does
2191 not prevent gc from running
2192 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2193 approximation for timezone and DST information between the
2194 universal time epoch and the smallest negative 32-bit time_t.
2195 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2196 year 1899 so long as the encoded time is non-negative.
2197 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2198 the correct answer for non-constant rotate amounts when performing
2199 an inline 32-bit rotation.
2201 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2202 there is only one thread in the session
2203 ** bug fix: memory leak for streams created in one thread and
2204 written to in another
2205 ** bug fix: lockup when compiled with gcc4
2206 ** bug fix: race that allows the gc to be triggered when gc is
2208 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2209 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2211 ** bug fix: finished threads are gc'ed properly
2212 * fixed some bugs revealed by Paul Dietz' test suite:
2213 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2214 has arguments with a different set of applicable methods from
2215 the orignal arguments.
2216 ** The type error thrown by MAP now has a correct expected-type
2218 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2219 name a compiled function.
2220 ** Three MISC tests where a large bignum was improperly coerced to
2221 a float that couldn't represent that bignum during type
2222 derivation were fixed.
2223 ** SUBTYPEP can now handle types involving the negation of a
2224 list-form FUNCTION type.
2225 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2226 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2227 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2229 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2230 * New feature: Experimental support for bivalent streams: streams
2231 opened with :element-type :default now allow character and binary
2232 (unsigned-byte 8) I/O
2233 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2234 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2236 * bug fix: no more highly sporadic "couldn't check whether ~S is
2237 readable" when reading a stream and an interrupt hits in the middle
2238 of a select system call
2239 * compiler better recognizes complex arrays (reported by Eduardo
2241 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2242 for variables on SBCL built with linkage-tables. (reported by Luis
2244 * various error reporting improvements.
2245 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2246 (Thanks to Thiemo Seufer)
2247 * bug fix: nested reader invokations work correctly
2248 * bug fix: it is possible to have simultaneous references to foreign
2249 code and foreign data with the same name.
2251 ** added x86-64 support
2252 ** incompatible change: the threading api now works with thread
2253 objects instead of thread ids
2254 ** bug fix: threads are protected from signals and interruption when
2255 starting up or going down
2256 ** bug fix: a race where an exiting thread could lose its stack to gc
2257 ** bug fix: don't halt on infinite error in threads if possible
2258 ** fixed numerous gc deadlocks introduced in the pthread merge
2259 ** bug fix: fixed thread safety issues in read and print
2260 ** bug fix: debugger doesn't hang on session lock if interrupted at
2261 an inappropriate moment
2262 ** bug fix: run-program is now thread safe(r)
2263 ** bug fix: inner with-recursive-lock no longer releases the mutex
2264 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2265 * fixed some bugs revealed by Paul Dietz' test suite:
2266 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2267 EXPECTED-TYPE slots filled.
2268 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2270 ** MAKE-CONDITION accepts classes as type-designators.
2271 ** COMPILE may never return NIL.
2272 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2273 range before calling Unix time functions
2275 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2276 * numerous signal handling fixes to increase stability
2277 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2278 * minor incompatible change: we now correctly canonize default
2279 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2280 as per the MOP, rather than the historical (INITARG INITFUNCTION
2281 INITFORM). (reported by Bruno Haible)
2282 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2283 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2284 for more information.
2285 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2286 pathname is a directory pathname.
2287 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2288 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2290 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2291 :METACLASS argument in addition to a class name. (reported by
2292 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2293 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2294 (reported by Bruno Haible; patch from Gerd Moellmann)
2295 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2297 * bug fix: more cleanups to the floating point exception handling on
2298 x86-64 (thanks to James Knight)
2299 * bug fix: the compiler does not try to constant fold calls of
2300 COERCE and BIT-* functions when they return freshly constructed
2301 objects. (reported by Nikodemus Siivola and Paul Dietz)
2302 * optimization: improved the MIPS versions of generic (in the
2303 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2304 * optimization: direct conversion of (unsigned-byte 32) to floats on
2305 the PowerPC platform.
2306 * optimization: structure instances with raw slots now use less
2307 memory, and probably show better memory locality. (thanks to
2309 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2310 are treated as requests for stack allocation on the x86-64,
2311 Alpha-32, PPC and SPARC platforms.
2312 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2313 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2314 (thanks to Tony Martinez)
2316 ** gcing a dead thread can no longer lead to lockups
2317 ** threads block signals until they are set up properly
2318 ** errno is no longer shared by threads
2319 ** interrupt-thread restores the eflags register on x86
2320 ** fixed some lockups due to gc/thread interaction
2321 * fixed some bugs revealed by Paul Dietz' test suite:
2322 ** invalid dotted lists no longer raise a read error when
2323 *READ-SUPPRESS* is T
2324 ** signal an error if a symbol that names a declaration is used
2325 as the name of a type, or vice versa
2326 ** allow using the (declare (typespec var*)) abbreviation for
2327 (declare (type typespec var*)) with all type specifiers
2328 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2329 ** always return NIL from PPRINT-POP when OBJECT is NIL
2330 ** don't signal errors when pretty-printing malformed LABELS,
2331 FLET or MACROLET forms
2332 ** declarations in a DOLIST body are also in scope for the
2334 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2336 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2339 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2340 * fixed cross-compiler leakages that prevented building a 32-bit
2341 target with a 64-bit host compiler.
2342 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2343 opened with :IF-EXISTS :OVERWRITE.
2344 * fixed bug 281: error for an invalid qualifier in a short-form method
2345 combination method is not signalled until the faulty method is called.
2346 * bug fix: iteration variable type inferrer failed to deal with open
2347 intervals. (reported by Alan Shields)
2348 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2349 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2350 or more runtime options were provided to the sbcl binary.
2351 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2352 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2353 * optimization: there's now a fast-path for fixnum arguments in the
2354 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2355 * optimization: the code generated on x86-64 is more compact thanks
2356 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2357 * bug fix: floating-point exception handling now partly works on
2358 x86-64. (Thanks to James Knight)
2359 * improvement to the MIPS backend from Thiemo Seufer: C-style
2360 64-bit long long arguments and return values to alien functions
2362 * fixed some bugs revealed by Paul Dietz' test suite:
2363 ** the type-error signalled from WARN has a filled-in DATUM slot.
2364 ** the type-error required when a stream is not associated with
2365 a file has the stream as its datum.
2366 ** type-errors on single-floats on x86-64 no longer have
2367 :INVALID-OBJECT as the datum
2368 ** the type-errors signalled for invalid function names now have
2369 a correct expected type
2370 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2371 for structures defined with a :TYPE. Documentation strings for
2372 typed structures are no longer immediately discarded
2373 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2374 broadcast streams and synonym streams. FILE-LENGTH now also works
2375 on broadcast streams.
2377 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2378 * incompatible change: the --noprogrammer option, deprecated since
2379 version 0.7.5, has been removed. Please use the equivalent
2380 --disable-debugger option instead.
2381 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2383 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2384 inoperational for a while now) has been completely removed.
2385 * null lexical environments are now printed as #<NULL-LEXENV>,
2386 significantly reducing the amount of clutter in typical backtraces.
2387 * documentation on weak pointers, finalization, and after GC hooks
2388 has been added to the manual.
2389 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2390 as other specialized array types, is much faster. SUBSEQ and
2391 COPY-SEQ on such arrays have also been sped up.
2392 * optimization: EQL is now more efficient when at least other argument
2393 is known to be of type (OR FIXNUM (NOT NUMBER)).
2394 * fixed bug: the runtime is now less vulnerable to changes in the
2395 size of the SBCL object on OS X, and virtual memory is reserved for
2396 all spaces that need to be at a fixed address.
2397 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2398 * fixed bug: finalizers and after GC hooks that cause consing are now
2400 * fixed bug: compiler error messages and summaries are now printed to
2401 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2402 * fixed inference of the upper bound of an iteration variable.
2403 (reported by Rajat Datta).
2404 * fixed bug 211e: calling local functions with duplicated constant
2405 keyword argument no longer causes a bogus style warning about an
2407 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2408 ftype declaration to be disregarded. (reported by Dave Roberts)
2409 * fixed bug 373: caused by erronous compilation of references to alien
2410 variables in the runtime on ppc/darwin.
2411 * fixed bug 376: CONJUGATE type deriver.
2412 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2413 (reported by Baughn on #lisp)
2414 * a cross-compiler bug on non-x86 platforms has been identified and
2415 fixed. (thanks to Bruno Haible)
2416 * improvements to the MIPS runtime code for increased stability.
2417 (thanks to Thiemo Seufer)
2418 * increased the maximimum compact environment size to allow
2419 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2420 * partial workaround for bug 135: don't name the function we're
2421 calling for hairy cases of EVAL, so as not to accumulate one environment
2422 entry per call to EVAL. (reported by Kevin Reid)
2423 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2424 * optimization: type testing for non-vector arrays should be faster.
2425 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2427 * bug fix: setting 31st element of a bit vector to zero did not work
2429 * bug fix: redefining a class definition which failed due to a
2430 previous accessor / function clash now works (but see BUGS entry
2431 #380 for more problems in this area). (thanks to Zach Beane)
2432 * the long form of DEFINE-METHOD-COMBINATION disables method group
2433 checking when given a single method group with pattern *. (thanks
2435 * on x86 compiler supports stack allocation of results of simple
2436 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2437 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2438 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2439 * fixed some bugs related to Unicode integration:
2440 ** the restarts for recovering from input and output encoding
2441 errors only appear when there is in fact such an error to
2443 * fixed some bugs revealed by Paul Dietz' test suite:
2444 ** MISC.549 and similar: late transformation of unsafe type
2445 assertions into derived types caused unexpected code
2447 ** SCALE-FLOAT type deriver is less wrong.
2448 ** type derivers for EXP, LOG and similar functions compute result
2449 types for complex arguments better.
2450 ** (MISC.563) CONJUGATE type deriver works for very restricted
2452 ** out-of-line type testers for character strings are available.
2453 ** EQUAL compiler transform understands specialness of objects
2455 ** accessing double-floats stored on the stack now works on x86-64.
2456 ** debugger internals could sometimes create invalid lispobjs,
2457 resulting in GC crashes.
2458 ** MISC.548: type check weakening can convert required type into
2460 ** initialization forms for bindings are not in scope of free special
2463 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2464 * incompatible change: thread support for non-NPTL systems has
2465 been removed - locking is buggy and unreliable. A threaded
2466 SBCL build will now warn at startup and refuse to create
2467 new threads, unless futex support is detected in the kernel
2468 * incompatible change: the top level REPL now has only an ABORT
2469 restart associated with it, not TOPLEVEL and ABORT as it used to.
2470 TOP and TOPLEVEL are now available as debugger commands for
2471 returning to the top level.
2472 * incompatible change: forms evaluated in the REPL now use the
2473 global optimization policy.
2474 * incompatible change: user- and system-initialization files are
2475 no longer processed with LOAD, but by READ and EVAL; hence the
2476 global optimization policy, startup package, readtable, etc,
2478 * The .fasl file format number has been incremented because of
2479 various incompatible changes.
2480 * internal entry point details and argument counts no longer appear
2481 in backtraces unless explicitly requested by setting
2482 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2483 * built-in and standard functions no longer have names like "top
2484 level local call to FOO".
2485 * fixed bug 32: functions defined in non-null lexical environments
2486 now have more legible printed representation
2487 * fixed bug 33: functions defined in non-null lexical environemnts
2488 are now more amenable to inspection by INSPECT.
2489 * workaround for bug 354: XEPs no longer appear in backtraces unless
2490 explicitly requested.
2491 * fixed bug: receiving the signal which results from attempting to
2492 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2493 SIGBUS on other *BSDs) on architectures where the C stack is also
2494 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2495 to debugger confusion or wild instability. (reported by Cheuksan
2497 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2498 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2499 (reported by Lutz Euler)
2500 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2501 compiled code. (reported by Paul Dietz)
2502 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2503 specialized parameter to a method to something that is not TYPEP
2504 the specializer is now possible.
2505 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2506 face of package deletion.
2507 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2508 pathname. (reported by David Tolpin on c.l.l)
2509 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2510 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2511 STRING-STREAM and FILE-STREAM, respectively.
2512 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2513 than previously; in addition, its test suite is now run on build.
2514 (thanks to Luke Gorrie)
2515 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2516 * optimization: added a immediate representation for single-floats
2518 * fixed some bugs revealed by Paul Dietz' test suite:
2519 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2520 ** attempting to create a package with a colliding nickname causes
2521 correctable errors to be signalled.
2522 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2523 ** several x86-64 backend bugs related to sign-extension of immediate
2526 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2527 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2528 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2530 * fixed loading of multiply forward-referenced layouts.
2531 (thanks to Cheuksan Wang)
2532 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2533 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2534 (see COMPILE-FILE documentation for details of :PRINT option)
2535 * fixed bugs 19 and 317: fixed-format floating point printing is
2536 more accurate. This also fixes a bug reported by Adam Warner
2537 related to the ~@F format directive.
2538 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2540 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2541 dispatch table if the from-char is a dispatch macro character.
2542 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2543 by the wordsize no longer ignore the last word. (reported by Lutz
2545 * fixed bug in type checking of dynamic-extent variables. (reported
2547 * optimization: sequence traversal functions use their freedom to
2548 coerce function designators to functions.
2549 * optimization: code with many calls to CLOS methods specialized on
2550 CLOS classes has had redundant type checks removed.
2551 * optimization: added declarations to speed up operations that access
2552 the internal character database (for example STRING-UPCASE)
2553 * optimization: comparison operations between floats and sufficiently small
2554 fixnums no longer create extra rationals
2555 * fixed some bugs related to Unicode integration:
2556 ** portions of multibyte characters at the end of buffers for
2557 character-based file input are correctly transferred to the
2558 start of the buffer at the next read.
2559 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2560 passing it through to OPEN.
2561 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2562 argument given to internal calls to OPEN.
2563 ** the built-in comment readers (introduced by character sequences
2564 ";" and "#|") are more forgiving to encoding errors; they will
2565 STYLE-WARN and then attempt to resync the stream at a character
2566 boundary. (thanks to Teemu Kalvas)
2567 * fixed some bugs in the x86-64 port:
2568 ** Negative short int return values from c-calls are sign-extended
2570 ** The stack is aligned to 16-bytes for c-calls, as required by
2571 the ABI. (thanks to Cheuksan Wang)
2572 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2573 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2574 for enums. (thanks to Vincent Arkesteijn)
2575 ** Multiple small optimizations and bugfixes for floating point
2577 * fixed some bugs revealed by Paul Dietz' test suite:
2578 ** Space, Tab, Linefeed, Return and Page have the invalid
2579 secondary constituent character trait.
2580 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2582 ** WITH-INPUT-FROM-STRING should only update the index place on
2584 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2585 works more reliably.
2586 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2587 with one-dimensional arrays with fill pointers.
2588 ** TYPE-OF failed on a complex with an integer realpart and a
2590 ** compiler failure during type inference for the code of form
2591 (IF (EQL X (THE ...)) ...) (MISC.535).
2593 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2594 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2595 platform. The port supports 61-bit fixnums, large memory spaces
2596 and reloading shared object files.
2597 * enhancement: saving cores with foreign code loaded is now
2598 supported on ppc/Darwin in addition to the previously supported
2600 * enhancement: the statistical profiler now walks deeper into the
2601 call stack for more meaningful call-graphs and accrued time
2602 reports (x86/x86-64 only). It also now reports time spent in
2604 * enhancement: it is now possible to trace most individual methods
2605 of a generic function in addition to tracing the generic function
2607 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2609 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2610 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2611 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2612 produces an error. (thanks to Vincent Arkesteijn)
2613 * bug fix: NAMESTRING on pathnames with :WILD components in their
2614 directories works correctly. (thanks to Artem V. Andreev)
2615 * fixed bug 125: compiler preserves identity of closures. (reported
2617 * bug fixed: functions with &REST arguments sometimes failed with
2618 "Undefined function" when compiled with (DEBUG 3). (reported by
2620 * bug fix: overflow during compiling of setting element of a bit
2621 vector with constant index and value. (reported by Timmy Douglas)
2622 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2623 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2624 * on x86 compiler partially supports stack allocation of dynamic-extent
2626 * GO and RETURN-FROM do not check the extent of their exit points
2627 when compiled with SAFETY 0.
2628 * fixed some bugs related to Unicode integration:
2629 ** encoding and decoding errors are now much more robustly
2630 handled; it should now be possible to recover even from invalid
2631 input or output to the terminal. (thanks to Teemu Kalvas)
2632 ** provided a first cut at implementing STRING-TO-OCTETS and
2633 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2634 ** altered the SB-MD5 contributed module slightly, changing the
2635 interface just enough for it to be supportable for builds where
2636 lisp characters are not eight bits.
2637 * fixed some bugs revealed by Paul Dietz' test suite:
2638 ** the FORMATTER-generated functions for ~V[ conditionals require
2639 the correct number of arguments.
2640 ** READ-FROM-STRING returns the mandated second value when applied
2641 to displaced strings.
2642 ** the #\Rubout and #\Backspace characters are treated as invalid
2643 constituent characters by the tokenizer.
2645 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2646 * new feature: reloading changed shared object files with
2647 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2648 * new feature: references to foreign variables and functions
2649 can now be compiled and loaded before the corresponding shared
2650 object file is loaded, as long as the foreign definitions are
2651 available at runtime.
2652 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2653 supported. (thanks to Dan Debertin)
2654 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2655 just keywords. (thanks to Vincent Arkesteijn)
2656 * fixed bug #331: structure-class instances corresponding to
2657 DEFSTRUCT forms are now created eagerly.
2658 * fixed bug #345: backtraces from calls to undefined functions work
2659 on x86 as well. Related bug #61 is now also partially fixed on x86
2660 (backtraces from throws to unknown catch tags.)
2661 * bug fix: lambda-list parsing is now stricter vrt. order and number
2662 of lambda-list keywords.
2663 * bug fix: as specified by AMOP, an error is signalled if a
2664 class-option appears multiple times in a DEFCLASS form. (reported
2666 * bug fix: RANDOM can be compiled when the compiler derives the type
2667 of its numeric argument as a disjoint set of small integers.
2668 (reported by Paul Dietz)
2669 * bug fix: starting a core saved with shared objects loaded when
2670 those objects are not available no longer causes threaded SBCL to
2671 hang. (reported by Sean Ross)
2672 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2674 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2675 argument, which must always be NIL. (reported by Kalle Niemitalo)
2676 * bug fix: printing 1.0d+23 no longer results in an error.
2677 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2678 * bug fix: structure slot setters preserve evaluation order. (thanks
2680 * fixed some bugs related to Unicode integration:
2681 ** RUN-PROGRAM can allow its child to take input from a Lisp
2682 stream. (reported by Stefan Scholl)
2683 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2684 locales. (reported by Ken Causey)
2685 * fixed some bugs revealed by Paul Dietz' test suite:
2686 ** INCF, DECF and REMF evaluate their place form as specified in
2688 ** FORMATTER expands ~{ ~} iteration directives with V or #
2689 parameters correctly.
2690 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2691 consequent uses no arguments correctly.
2692 ** the system has a partial understanding of the (COMPLEX RATIO)
2694 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2697 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2698 * new feature: a build-time option (controlled by the :SB-UNICODE
2699 keyword feature, enabled by default) for building the system with
2700 support for the entire 21-bit character space defined by the
2702 * new feature: the system now has rudimentary external-format
2703 support; the primary user-visible change at this time is that
2704 characters with the high bit set (such as lower-case-e-acute) will
2705 print correctly to a terminal in a UTF-8 environment.
2706 * minor incompatible change: BASE-CHAR no longer names a class;
2707 however, CHARACTER continues to do so, as required by ANSI.
2708 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2709 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2710 has been moved to the SB-EXT package (temporarily re-exported from
2712 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2713 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2715 * fixed bug #351: better error-handlind and reporting for malformed
2717 * fixed bug #350: bignum-printing is now more memory-efficient,
2718 allowing printing of very large bignums, eg. (expt 2 10000000).
2719 (reported by Bruno Haible)
2720 * fixed bug #302: better primitive-type selection for intersection
2722 * fixed bug #308: non-graphic characters now all have names, as
2723 required. (reported by Bruno Haible)
2724 * bug fix: redefining a class with different superclasses now correctly
2725 removes it from the direct-subclasses of its previous superclasses.
2726 (reported by David Morse)
2727 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2728 new value now works. (reported by Bruno Haible)
2729 * bug fix: correct canonicalization of multiple non-standard slot
2730 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2731 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2732 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2733 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2734 now exists, an signals an error.
2735 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2736 during macroexpansion for non-iteration variables as well. (reported
2737 by Bruno Haible for CMUCL)
2738 * bug fix: Cyclic structures and unprintable objects in compiler
2739 messages no longer cause errors. (reported by Bruno Haible)
2740 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2741 and READ-FROM-STRING all now return a primary value of NIL if
2742 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2743 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2744 (reported by Bruno Haible for CMUCL)
2745 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2746 do not designate a condition. (reported by Bruno Haible for
2748 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2749 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2750 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2751 permitting resolution in favour of any of the conflicting symbols.
2752 (reported by Bruno Haible for CMUCL)
2753 * bug fix: EQUAL compiler optimizations is less aggressive on
2754 strings which can potentially compare true despite having distinct
2755 specialized array element types.
2756 * bug fix: unit enumerations can be defined without dividing by
2757 zero. (thanks to Vincent Arkesteijn)
2758 * FORMAT compile-time argument count checking has been enhanced.
2759 (report from Bruno Haible for CMUCL)
2760 * a partial workaround for the bug 262: the compiler does not try to
2761 inline-expand a local function doing RETURN-FROM from a deleted
2762 BLOCK. (thanks to Peter Denno for the bug report and to David
2763 Wragg for the simple test case)
2764 * fixed some bugs revealed by Paul Dietz' test suite:
2765 ** RENAME-PACKAGE allows all package designators as new package
2767 ** constraint propagation and lambda variable substitution are
2768 more cautious in dealing with partially deleted code.
2769 ** compiler sometimes lost reoptimization passes.
2770 ** CERROR, given a condition as condition designator, passes its
2771 remaining arguments to the continue format control without
2773 ** Case-altering FORMAT directives work correctly on non-ASCII
2775 ** The REAL type specifier handles bounds outside the floating
2776 point ranges without signalling FLOATING-POINT-OVERFLOW.
2777 ** Functions with IR1-transformations can create intercomponent
2778 references to global functions.
2779 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2781 ** FORMAT ~R treats a nil value for its first parameter correctly.
2783 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2784 * enhancement: saving cores with foreign code loaded is now
2785 supported on x86/NetBSD and sparc/Linux in addition to the previously
2786 supported platforms.
2787 * bug fix: on some platforms repeated installations caused multiple
2788 copies of HTML documentation to be installed -- should not happen
2789 any more. (reported by Stefan Scholl)
2790 * bug fix: parsing self-recursive alien record types multiple times
2791 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2792 original patch by Helmut Eller for CMUCL)
2793 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2794 (thanks to Richard Kreuter)
2795 * bug fix: defining classes whose accessors are methods on existing
2796 generic functions in other (locked) packages no longer signals
2797 bogus package lock violations. (reported by François-René Rideau)
2798 * bug fix: special variables as DEFMETHOD parameters no longer have
2799 associated bogus type declarations. (reported by David Wragg and
2801 * bug fix: read-write consistency on streams of element-type
2802 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2803 * bug fix: redefiniton of the only method of a generic function with
2804 no DEFGENERIC no longer emits a full WARNING. In addition,
2805 redefinition of generic functions with no DEFGENERIC to an
2806 incompatible lambda list now signals an error. (thanks to Zach
2808 * bug fix: DEFGENERIC now works even when there's a function of the
2809 same name in an enclosing lexical environment. (thanks to Zach
2811 * fixed compiler failure, caused by instrumenting code during
2812 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2813 * optimization: added loop analysis and improved register allocation
2814 * fixed some bugs revealed by Paul Dietz' test suite:
2815 ** POSITION on displaced vectors with non-zero displacement
2816 returns the right answer.
2817 ** (SIMPLE-STRING) is a valid type specifier for sequence
2819 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2821 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2822 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2824 ** The justification version of the FORMAT ~< directive treats
2825 non-zero minpad parameter correctly.
2827 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2828 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2829 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2830 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2831 the supported interface.
2832 * new feature: Single-stepping of code compiled with DEBUG 2 or
2833 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2834 * new feature: saving cores with foreign code loaded is now
2835 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2836 Timothy Moore's work for CMUCL)
2837 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2838 parameters to * instead of NIL if no initform is supplied.
2839 (reported by Johan Bockgaard)
2840 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2841 correctly when FUNCALL appears as the car of the form. Note:
2842 despite this FUNCALL forms are not currently subject to
2843 compiler-macro expansion. (port of Raymond Toy's fix for the
2844 same from CMUCL, reported by Johan Bockgaard)
2845 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2846 (thanks for Teemu Kalvas)
2847 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2848 case instead of terminating the iteration (thanks for Julian
2849 Squires, Sean Champ and Raymond Toy)
2850 * bug fix: incorrect expansion of defgeneric that caused a style
2851 warning. (thanks for Zach Beane)
2852 * bug fix: slot accessor effective method computation works properly
2853 for classes with multiple non-standard applicable methods on
2854 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2855 * on x86 compiler supports stack allocation of results of LIST and
2856 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2857 CMUCL implementation by Gerd Moellmann)
2858 * fixed some bugs revealed by Paul Dietz' test suite:
2859 ** FORMAT strings with both the ~<~:;~> form of the justification
2860 directive and pretty-printing directives cause an error.
2862 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2863 * incompatible change: the internal functions
2864 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2865 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2866 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2867 instead of the old functions.
2868 * new feature: on platforms where "dladdr" is available foreign
2869 function names now appear in backtraces. (based on Helmut Eller's
2871 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2872 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2874 * documentation: ASDF manual is now distributed with SBCL.
2875 * bug fix: SBCL can now load its contributed modules with REQUIRE
2876 even if the system-provided entries have been removed from
2877 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2879 * bug fix: backtraces involving undefined functions or assembly
2880 routines are more informative. (thanks to Brian Downing)
2881 * bug fix: mutually referent alien structures now work correctly.
2882 (reported by Rick Taube)
2883 * bug fix: structures defined by WITH-ALIEN can be referred to
2884 within other definitions in the same WITH-ALIEN.
2885 * bug fix: division operators (MOD, TRUNCATE and the like) with
2886 constant zero divisors and integer dividends no longer generate
2888 * bug fix: provide default methods for INPUT-STREAM-P and
2889 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2890 * bug fix: improve the detection and resolution of MOP metacycles
2891 (where effective method computation depends on the generic function
2892 having its effective method computed). (reported by Bruno Haible)
2893 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2894 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2895 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2896 * bug fix: pathnames with relative directory components can be
2897 represented relative to default pathnames.
2898 * optimization: in taking the GCD of bignums, reduce the two bignums
2899 to approximately the same size (using Euclid's algorithm) before
2900 applying the more sophisticated binary GCD. (thanks to Juho
2902 * optimization: COUNT on bitvectors now operates word-at-a-time.
2903 * optimization: ASH with a positive, but not necessarily constant,
2904 (leftwards) shift, when in a modular context, is compiled to a
2906 * fixed some bugs revealed by Paul Dietz' test suite:
2907 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2908 if the corresponding argument is NIL.
2909 ** FORMAT directives accepting a minpad parameter treat negative
2911 ** literal commas as character parameters to FORMAT directives are
2913 ** literal spaces directly after ~<Newline> directives within a
2914 format-logical-block (~:< ~@:>) do not induce :FILL-style
2915 conditional newlines.
2916 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2917 as specified: it no longer includes conditional newlines).
2918 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2920 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2921 :PER-LINE-PREFIX argument does not evaluate to a string.
2923 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2924 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2925 the manual for details; for now, package locks can be disabled by
2926 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2927 if no major problems are found then it is likely that they will be
2928 compiled in unconditionally.
2929 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2930 unsupported operators on all platforms. To load a shared library
2931 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2932 object file, link it into a shared library outside of SBCL and
2933 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2935 * bug workaround: ROOM T and the GC were not working together
2936 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2937 reporting facility aren't preserved. That reporting has been
2938 disabled, so now until and unless someone figures out how to make it
2939 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2940 * minor incompatible change: as threatened around sbcl-0.8.0, the
2941 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2942 The symbols are also exported from SB-PCL for backwards
2943 compatibility, but more so than before SB-PCL should be treated as
2944 an implementation-internal package.
2945 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2947 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2948 It is known as of this release not to work on the Alpha, however.
2949 * fixed bug #167: errors signalled due to illegal syntax in method
2950 bodies are now more legible.
2951 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2952 designators and can hence be used with TYPEP.
2953 * fixed bug #333: CHECK-TYPE now ensures that the type error
2954 signalled, if any, has the right object to be accessed by
2955 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2956 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2957 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2959 * fixed bug #334: programmatic addition of slots using specialized
2960 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2961 and :ALLOCATION :CLASS slots.
2962 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2963 float exponents. (rereported by Peter Seibel)
2964 * fixed a bug: #\Space (and other whitespace characters) are no
2965 longer considered to be macro characters in standard syntax by
2966 GET-MACRO-CHARACTER.
2967 * fixed bug: initialization of condition class metaobjects no longer
2968 causes an instance of the condition to be created. (reported by
2970 * fixed bug: it is now possible to have slots such that
2971 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2972 description is neither :INSTANCE nor :CLASS.
2973 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2974 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2975 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2976 non-standard SLOT-DEFINITION-ALLOCATION values.
2977 * fixed bugs: various race conditions handling exiting threads.
2978 CL-PPCRE's thread torture test now passes.
2979 * fixed arguably-a-bug: GC time proportional to number of threads in
2980 system even when most of them are idle
2981 * optimization: improved performance of BIT and SBIT on bit-vectors.
2982 * .fasl file incompatibility: The fasl file version number has
2983 been incremented because of changes associated with package locks.
2985 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2986 * minor incompatible change: the system no longer provides
2987 optimization hints (conditions which are TYPEP
2988 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2989 mode; these hints are still emitted when higher SPEED optimization
2991 * new contrib module: a sampling profiler (profiling by statistical
2992 sampling, rather than by instrumenting functions) is available as
2993 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2994 * the behaviour of the standard function ED is now customizeable by
2995 third parties through a hook variable: see ED's documentation
2996 string for information on the protocol.
2997 * the compiler no longer emits efficiency notes for (FUNCALL X)
2998 when the type of X is uncertain under default optimization
3000 * fixed bug 276: mutating a binding of a specialized parameter to a
3001 method to something that is not TYPEP the specializer is now
3003 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3004 exhibit the required behaviour on the x86 platform. (thanks to
3005 Peter van Eynde, Eric Marsden and Bruno Haible)
3006 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3007 even for difficult arguments. (reported by Peter Graves)
3008 * fixed bug 141a: the backquote printer now descends quoted
3010 * fixed another bug in backquote printing: no more destructive
3011 modification of the form's list structure. (reported by Brian
3013 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3014 move between its address being taken and the call to
3015 interrupt_thread, fixing a crashing race condition.
3016 * the SB-POSIX contrib implementation has been adjusted so that it
3017 no longer exhibits ridiculously poor performance when constructing
3018 instances corresponding to C structs.
3020 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3021 * minor incompatible change: the sb-grovel contrib now treats C
3022 structures as alien (in the sense of SB-ALIEN) objects rather than
3023 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3024 has implications for memory management of client code
3025 (sb-grovel-returned objects must now be manually managed) and for
3026 type safety (alien objects now have full types).
3027 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3028 used to control emission of compiler diagnostics, rather than the
3029 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3030 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3031 quality should be considered deprecated.
3032 * install.sh now installs the user manual as well
3033 * (not quite a new documentable feature, but worth considering in
3034 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3035 beginnings of a semantically meaningful condition hierarchy is
3036 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3038 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3039 designator as the defaults argument.
3040 * fixed bug: Displaced arrays whose displaced-to array has become
3041 too small now cause ARRAY-DIMENSION to signal an error, providing
3042 for safer bounds-checking. (reported by Bruno Haible)
3043 * fixed bug: DEFCLASS slot definitions with identical :READER and
3044 :WRITER names now signal a reasonable error. (reported by Thomas
3046 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3048 * fixed bug: Invalid slot specification errors now print correctly.
3049 (thanks to Zach Beane)
3050 * fixed bug 320: Shared to local slot value transfers in class
3051 redefinitions now happen corrently from superclasses as
3052 well. (reported by Bruno Haible)
3053 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3055 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3056 improper lists correctly. (reported by Bruno Haible)
3057 * fixed bug 313: source-transform for <fun-name> was erroneously
3058 applied to a call of a value of a variable with name <fun-name>.
3059 (reported by Antonio Menezes Leitao)
3060 * fixed bug 307: The obsolete instance protocol ensures that
3061 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3062 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3063 remove dead unknown-values globs from the middle of the stack.
3064 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3065 easier to resume long computations after using *BREAK-ON-SIGNALS*
3066 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3067 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3068 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3069 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3070 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3071 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3073 * fixed a (fairly theoretical) bug in string printing: if
3074 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3075 does not have array-element-type equal to the most general string
3077 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3078 function name. (thanks to Nikodemus Siivola)
3079 * fixed bug: compile-time format string checker failed on
3080 non-closed ~{. (reported by Thomas F Burdick)
3081 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3082 don't warn on legal loop code involving more than one aggregate
3083 boolean. (thanks to Nikodemus Siivola)
3084 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3085 in keyword position to MAKE-PACKAGE was not being reported as
3087 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3088 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3090 * fixed bugs 280 and 312: the checking for multiple definitions in a
3091 file is less likely to become confused by uses of inline
3093 * fixed bug: the #S reader macro performs the keyword coercion
3094 specified for slot names. (reported by Kalle Niemitalo)
3095 * fixed bug: lambda lists may contain symbols whose names start with
3096 & but are not lambda-list-keywords; their occurrence triggers a
3098 * fixed bug 321: define-method-combination argument lambda lists do
3099 not cause invalid code to be generated when &optional or &aux
3100 variables have default values. (reported by Bruno Haible)
3101 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3102 have CLOS classes; this appears also to have fixed reported
3103 instability in stack exhaustion detection.
3104 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3105 MUFFLE-WARNING when no associated restart is present is now
3107 * optimization: rearranged the expansion of various defining macros
3108 so that each expands into only one top-level form in a
3109 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3111 * optimization: used a previously little-used slot in symbols to
3112 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3114 * fixed some bugs revealed by Paul Dietz' test suite:
3115 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3117 ** Fixed an optimization bug related to inheritance of initforms
3118 from local to shared slots.
3119 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3120 ** CAST optimizer forgot to flush argument derived type.
3121 ** print/read consistency on floats is now orders of magnitude
3122 more likely. (thanks also to Bruno Haible for a similar report
3124 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3125 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3126 for objects of type REAL. Make it so.
3127 ** SXHASH is specified (infelicitously) to respect similarity,
3128 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3129 it so. (thanks to Markus Ziegler)
3130 ** on the Alpha, the compiler succeeds in compiling functions
3131 returning a known number of arguments greater than 63.
3132 ** fixed handling of invalid NIL arguments in keyword position
3134 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3136 ** provided a readably-printable representation for RANDOM-STATE
3138 ** ensured that pathnames, where they have a namestring, always
3139 print using #P"..." syntax.
3141 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3142 * Support for the forthcoming 2.0 version of the NetBSD kernel
3143 running on x86 hardware has been added. (thanks to Perry
3144 E. Metzger most immediately, and others for their past work)
3145 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3146 current release version; SBCL's OpenBSD support had been broken
3147 since about the time of OpenBSD's switch to ELF binary format.)
3148 * [placeholder for DX summary]
3149 ** user code with &REST lists declared dynamic-extent, under high
3150 speed or space and low safety and debug optimization policy.
3151 * The manual has been converted to Texinfo format and the debugger
3152 chapter from the cmucl manual has been added.
3153 * A facility has been added to extract documentation strings from
3154 sbcl and store them as Texinfo-formatted snippets for inclusion in
3155 the manual (via Texinfo's @include directive)
3156 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3157 the test case to Dave Roberts)
3158 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3159 pointers. (reported by Sean Ross)
3160 * bug fix: PROFILE output is printed nicely even for large numerical
3161 values. (thanks to Zach Beane)
3162 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3163 greater than 32 handle EOF correctly.
3164 * bug fix: on X86 an immediate argument of the IMUL instruction is
3165 correctly printed in disassembly. (thanks to Lutz Euler)
3166 * bug fix: class slots in redefined classes preserve their old
3167 values. (thanks to Bruno Haible and Nikodemus Siivola)
3168 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3169 succeeds. (reported by Marco Baringer)
3170 * fixed some bugs revealed by Paul Dietz' test suite:
3171 ** READ-SEQUENCE now works on ECHO-STREAMs.
3172 ** RATIONALIZE works more according to its specification. (thanks
3175 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3176 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3177 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3178 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3179 should matter to you only if you rebind the printer control
3180 variables and then find you want different bindings in the
3181 debugger than in the ordinary execution of your program.)
3182 * The runtime build system has been tweaked to support building
3183 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3184 assembler and linker. (thanks to Nikodemus Siivola)
3185 * Unbound, undefined, undeclared variables now trigger full
3186 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3187 more often programmer error than deliberate exploitation of undefined
3189 * optimization: the hash algorithm for strings has changed to one
3190 that is less vulnerable to spurious collisions. (thanks to Juho
3192 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3193 needless bounds checking. (thanks to Juho Snellman)
3194 * optimization: implemented multiplication as a modular
3195 (UNSIGNED-BYTE 32) operation on the PPC backend.
3196 * fixed some bugs revealed by Paul Dietz' test suite:
3197 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3199 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3200 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3201 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3203 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3205 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3207 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3208 their output stream on EOF from read.
3209 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3210 have been read to end-of-file.
3211 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3213 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3214 description of determination of which consecutive characters
3216 ** Printing the "Space" character with escaping on now yields "#\\ ",
3217 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3218 ** Reading floating-point numbers with *READ-BASE* set to a number
3219 less than 10 works correctly.
3220 ** Reading floating-point numbers with *READ-BASE* set to a number
3221 more than 10 works correctly.
3222 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3223 the readtable currently in effect.
3225 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3226 * minor incompatible change: parsing of namestrings on a physical
3227 (Unix) host has changed; numbers after the final #\. in a
3228 namestring are no longer interpreted as a version field. This is
3229 intented to be largely invisible to the user, except that the
3230 meaning of the namestring "*.*.*" has changed: it now refers to a
3231 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3232 should usually be replaced by
3233 (make-pathname :name :wild :type :wild :version :wild)
3234 with the added benefit that this is more likely to be portable.
3235 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3236 option to OPEN now signals an error if the file being opened
3237 exists; this may have an impact on existing code.
3238 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3239 signals received, on the PowerPC platforms (both Linux and
3240 Darwin). (thanks to Pierre Mai for pointing out the location of
3242 * several fixes on OS X: The system now builds and runs cleanly on
3243 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3244 (thanks to Brian Mastenbrook)
3245 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3246 second-resolution: integer multiples of 1/3600 between -24 and 24.
3247 (thanks to Vincent Arkesteijn)
3248 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3249 type when called with 1 argument; PEEK-CHAR checked type of
3250 PEEK-TYPE only after having read first character from a
3251 stream. (reported by Peter Graves)
3252 * bug fix: the garbage collector now has much better locality
3253 behaviour, and in particular no longer treats all memory as being
3254 exhausted when many small objects point to each other in a deeply
3256 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3257 recognized as being TYPEP their class.
3258 * bug fix: the PUSHNEW documentation string has been corrected.
3259 (thanks to Vincent Arkesteijn)
3260 * bug fix: defaulting of the value for the last of an atypically
3261 large number of multiple values being bound was not being
3262 performed correctly on the Alpha or PPC platforms
3263 * optimization: implemented multiplication as a modular
3264 (UNSIGNED-BYTE 32) operation on the x86 backend.
3265 * optimization: SEARCH on simple-base-strings can now be open-coded.
3266 (see also contrib/compiler-extras.lisp for inspiration for
3267 teaching the compiler about the Boyer-Moore algorithm).
3268 * value, returned by MAX (and MIN) called with several EQUALP, but
3269 not EQL, arguments now does not depend on compiler settings.
3270 * fixed some bugs revealed by Paul Dietz' test suite:
3271 ** in stack analysis liveness information is propagated from
3272 non-local entry points.
3273 ** pathwise CAST removing failed when the CAST node did not start
3275 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3276 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3278 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3279 host is already defined.
3280 ** RENAME-FILE works on streams instead of signalling an internal
3282 ** PEEK-CHAR uses the current readtable when determining whether
3283 or not a character is whitespace.
3284 ** MERGE-PATHNAMES handles the case when the pathname does not
3285 specify a name while the default-pathname specifies a version.
3286 ** Pathnames now stand a better chance of respecting print/read
3288 ** Attempting to use standardized file system operators with a
3289 pathname with invalid :DIRECTORY components signals a
3291 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3293 ** DIRECTORY on logical pathnames is more correct.
3294 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3295 signal a TYPE-ERROR if their argument is not a stream.
3296 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3297 designator argument does not designate a stream.
3298 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3299 examining the synonym.
3300 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3302 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3303 element-type larger than ([UN]SIGNED-BYTE 32).
3305 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3306 * When built with the :SB-FUTEX feature, threaded builds now take
3307 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3308 for faster/more reliable mutex and condition variable support.
3309 * Incompatible change (but one you probably shouldn't have been using
3310 anyway): the interface and code for arbitrating between multiple
3311 threads in the same user session has been redesigned.
3312 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3313 error when called without an explicit environment argument.
3314 (thanks to Nikodemus Siivola)
3315 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3316 confused about their position. (thanks to Adam Warner and Gerd
3318 * bug fix: Pretty printing backquoted forms with unquotations in the
3319 argument list position of various code constructs such as LAMBDA
3320 now works correctly. (reported by Paul Dietz)
3321 * bug fix: Pretty printing unquotations no longer loses all
3322 stream position information.
3323 * optimization: performance of string output streams is now less
3324 poor for multiple small sequence writes.
3325 * optimization: performance of CSUBTYPEP in the presence of complex
3326 expressions involving CONS and NOT many times has been improved.
3327 (reported by Paul Dietz)
3328 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3330 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3331 streams for the REPL, for the debugger, and so on. (thanks to
3333 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3334 * fixed some bugs revealed by Paul Dietz' test suite:
3335 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3336 is ignored if it is too small, rather than propagating through
3337 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3338 ** extremely complex negations of CONS types were not being
3339 sufficiently canonicalized, leading to inconsistencies in
3341 ** VALUES tranformer lost derived type.
3343 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3344 * fixed a bootstrapping bug: the build process no longer assumes
3345 that the various BOOLE-related constants have the same value in
3346 host and target lisps. (noted by Paul Dietz' test suite on an
3347 SBCL binary built from CLISP)
3348 * The system can now be dynamically linked on the MIPS platform,
3349 which enables dynamic loading of foreign code from Lisp. (thanks
3350 to Ralf Baechle for discussions on the MIPS ABI)
3351 * The system now records debugging information for its own source
3352 files in a filesystem-position-independent manner, relative to
3353 the "SYS" logical host.
3354 * fixed a compiler bug: MV-LET convertion did not check references
3355 to the "max args" entry point. (reported by Brian Downing)
3356 * tweaked disassembly notes to be less confident about proclaiming
3357 some instruction as an LRA. (thanks to Brian Downing)
3358 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3359 now each have their own history, command character, and other
3360 characteristics. (thanks to David Lichteblau)
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** compiler failure in compiling LOGAND expressions including a
3364 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3365 shift greater than 32.
3366 ** FLUSH-DEST did not mark blocks for type check regeneration.
3367 ** HANDLER-CASE failed to accept declarations in handler clauses
3368 in some circumstances.
3370 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3371 * New code in contrib/sb-introspect (still probably not entirely
3372 stable yet) provides some support for smart Lisp development
3373 environments like SLIME.
3374 * The conditions signalled for errors occurring when loading .fasl
3375 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3376 in a way which should help ASDF recover gracefully.
3377 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3378 stuff has been cleaned up. If you code contrib/ stuff, this might
3379 affect you, and you can look at contrib/README, contrib/STANDARDS,
3380 and/or the 0.8.4.27 diff to check.
3381 * In full calls the compiler now does not generate checks for declared
3382 argument types for all arguments.
3383 * various threading fixes
3384 ** and some experimental patches which didn't make it into
3385 the main tree for this release, but which are shipped in
3386 contrib/experimental-thread.patch as a possible fix for some
3387 failures (deadlock, spinning...) in GC-intensive multithreaded
3389 * fixed PPC build problem (source code incompatibility of different
3390 library versions): added offsetof() hackery which attempts to divine
3391 where glibc maintainers put uc_mcontext today
3392 * fixed bug 282: compiler does not trust type assertions while passing
3393 arguments to a full call.
3394 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3395 &OPTIONAL VALUES type parameter.
3396 * fix bug 214: algorithm for noting rejected templates is now more
3397 similar to that of template seletion. (also reported by rydis on
3399 * fixed bug 141b: printing backquoted information readably and prettily
3400 inserts a space where necessary.
3401 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3402 (CHARACTER 10) are now reported as errors, rather than propagated
3403 as unknown types. (reported by piso on #lisp)
3404 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3405 with values NIL and :ERROR. (thanks to Milan Zamazal)
3406 * fixed bug 191c: CLOS now does proper keyword argument checking as
3407 described in CLHS 7.6.5 and 7.6.5.1.
3408 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3409 longer raise an error; further, using a list as a for-as-arithmetic
3410 counter now raises a meaningful error.
3411 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3412 now understood by sequence creation functions such as MAKE-SEQUENCE
3414 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3415 a STRING-INPUT-STREAM.
3416 * compiler enhancement: SIGNUM is now better able to derive the type
3418 * type declarations inside WITH-SLOTS are checked. (reported by
3420 * fixed some bugs revealed by Paul Dietz' test suite:
3421 ** incorrect optimization of TRUNCATE for a positive first
3422 argument and negative second.
3423 ** compiler failure in let-convertion during flushing dead code.
3424 ** compiler failure while deriving type of TRUNCATE on an
3425 interval, containing 0.
3426 ** ASH of a negative bignum by a negative bignum count now returns
3428 ** intersection of CONS types now canonicalizes properly, fixing
3429 inconsistencies in SUBTYPEP.
3431 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3432 * incompatible change: The --disable-debugger command line
3433 option now clobbers the debugger at a more fundamental
3434 level, by redefining #'INVOKE-DEBUGGER instead of by
3435 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3436 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3437 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3438 enter the debugger REPL and then suffer recursive errors
3439 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3440 while under the new system, BREAK in --disable-debugger mode
3441 terminates the system just as an unhandled error would.
3442 * fixed compiler performance when processing loops with a step >1;
3443 * bug fix: DOCUMENTATION now retrieves generic function
3444 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3445 support has been systematized, and now supports the methods
3446 specified by ANSI, along with a default method and a method for
3447 slot documentation. (reported by Nathan Froyd)
3448 * bug fix: effective methods associated with a generic function are
3449 no longer cached over a change of that generic function's method
3450 combination. (reported by Andreas Fuchs)
3451 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3452 names a non-existent directory. (thanks to Andreas Fuchs)
3453 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3454 the PPC platform, lead to stack corruption; this has been fixed.
3455 (reported by Rainer Joswig)
3456 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3457 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3458 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3459 arithmetic in general, is now much more reliable on the PPC
3461 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3462 platform now returns the right answer.
3463 * optimization: restored some effective method precomputation in
3464 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3465 precomputation is now tunable.
3466 * optimization: compiler-internal data structure use has been
3467 reviewed, and changes have been made that should improve the
3468 performance of the compiler by about 20%.
3469 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3470 simple-base-strings and simple-bit-vectors is improved.
3471 * optimization: the optimization of 32-bit logical and arithmetic
3472 functions introduced in version 0.8.3 on the x86 has been
3473 implemented on the mips, ppc and sparc platforms; an
3474 implementation of the same facility, but for 64-bit arithmetic,
3475 has been added for the alpha.
3476 * microoptimization: the compiler is better able to make use of the
3477 x86 LEA instruction for multiplication by constants.
3478 * bug fix: in some situations compiler did not report usage of
3479 generic arithmetic in (SPEED 3) policy.
3480 * bug 145b fix: compiler used wrong type specifier while converting
3481 MEMBER-types to numeric.
3482 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3484 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3485 index argument now works properly on the Alpha platform.
3486 * bug fix: floating point exception treatment on the Alpha platform
3488 * bug fix: FILE-POSITION works much better on string input and
3489 output streams. (thanks to Nikodemus Siivola)
3490 * bug fix: many threading/garbage collection symptoms sorted.
3491 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3492 might be pseudo-atomic.
3493 * internal change: Stopping for GC is now done with signals not
3494 ptrace. GC is now done in whichever thread wanted it, instead of
3496 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3498 * bug fix: result form in DO is not contained in the implicit
3500 * incompatible change: ICR structure is changed; the value part of
3501 CONTINUATION is now called LVAR; corresponding functions are
3502 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3503 * added type deriver for ISQRT (thanks to Robert E. Brown).
3504 * bug fix: better support for loading from the command line when an
3505 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3507 * fixed some bugs revealed by Paul Dietz' test suite:
3508 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3509 ** ROUND and FROUND now give the right answer when given very
3510 small float arguments.
3511 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3513 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3514 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3515 ** LCM should return a non-negative integer.
3516 ** PARSE-INTEGER returned the index of a terminator instead of the
3517 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3518 ** PARSE-INTEGER returned an incorrect index being applied to a
3520 ** LCM with two arguments of 0 returns 0 rather than signalling
3522 ** unsigned addition of a 32-bit constant with the high bit set no
3523 longer causes an internal compiler error on the x86.
3524 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3525 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3526 with negative last argument.
3527 ** byte specifiers with zero size and position no longer cause
3528 an error during type derivation.
3529 ** bignum multiplication on the Alpha platform now returns the
3531 * porting: The system now builds on SuSE AMD64, although it still
3532 generates a 32-bit binary.
3533 * .fasl file incompatibility: The fasl file version number has
3534 been incremented (because of the changes to internal compiler
3535 data structures referred to above).
3537 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3538 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3539 more accurately, on the Darwin kernel running on PowerPC hardware.
3540 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3541 * Compiler code deletion notes now signal a condition of type
3542 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3543 an associated MUFFLE-WARNING restart.
3544 * The compiler now performs limited argument count validation of
3545 constant format strings in FORMAT, and where appropriate in ERROR,
3546 CERROR and WARN. (thanks to Gerd Moellmann)
3547 * New ASDF-INSTALL contrib can be used for automatic download and
3548 installation of third-party Lisp code from CCLAN or other sites
3550 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3551 which forces another thread to execute a function supplied by the
3553 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3554 now accept and act upon their :ELEMENT-TYPE keyword argument.
3555 (reported by Martin Atzmueller, Edi Weitz)
3556 * bug fix: FILE-POSITION now accepts position designators up to
3557 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3558 is the greater. (thanks to Patrik Nordebo)
3559 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3560 Kalle Olavi Niemitalo)
3561 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3562 printable. (reported by Eric Marsden)
3563 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3564 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3565 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3566 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3567 (thanks to Stig Sandoe)
3568 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3569 UNREAD-CHAR now correctly includes the unread character in the
3570 target sequence. (thanks to Gerd Moellmann)
3571 * bug fix in threaded builds: the system can now be suspended and
3572 resumed by shell job control with minimal disruption.
3573 * bug fixes in times and timezones >2038AD
3574 * better handling of "where is GNU make?" problem in build scripts
3575 (thanks to Nikodemus Siivola)
3576 * new optimization: inside a named function any reference to a
3577 function with the same name is considered to be a self-reference;
3578 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3579 optimization quality.
3580 * new optimization on x86: logical functions and + now have
3581 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3582 used when the result is truncated to 32 bits.
3583 * VALUES declaration is partially enabled.
3584 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3585 * fixed some bugs revealed by Paul Dietz' test suite:
3586 ** The system now obeys the constraint imposed by
3587 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3588 types form a lattice under type intersection.
3589 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3590 ** ASSOC now ignores NIL elements in an alist.
3591 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3592 and (1+ MOST-POSITIVE-FIXNUM) answers.
3593 ** The addition of a method with invalid qualifiers to a generic
3594 function does not cause an error to be signalled immediately;
3595 a warning is signalled, and the error is generated only on
3596 calling the generic function.
3597 * changed .fasl file version number, in part to add type codes for
3598 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3599 obscure ANSI requirements
3601 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3602 * fixed bug 148: failure to inline-expand a local function left
3603 garbage, confusing the compiler.
3604 * fixed bugs 3cd: structure slot readers perform type check if the
3605 slot can have an invalid value (i.e. it is either not initialized
3606 or can be written with a less specific slot writer).
3607 * bug fix: the compiler now traps array references to elements off
3608 the end of an array; previously, the bounds checking in some
3609 circumstances could go off-by-one.
3610 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3612 * type declarations for array element types now obey the description
3613 on the CLHS page "Declaration TYPE", as per discussions on
3614 sbcl-help around 2003-05-08. This means that a declaration
3615 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3616 declaration, all references to BAR will be asserted or assumed
3617 (with THE, so dependent on compiler policy) to involve objects of
3618 type FOO. Note that no such declaration is implied in
3619 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3620 * declared types of functions from the "Conditions"
3621 chapter. (reported by Paul Dietz)
3622 * bug fix: CERROR accepts a function as its first argument.
3623 * bug fix: NTH an NTHCDR accept a bignum as index
3624 arguments. (reported by Adam Warner)
3625 * optimization: character compare routines now optimize comparing
3626 against a constant character. (reported by Gilbert Baumann)
3627 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3628 argument now works properly on the MIPS platform.
3629 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3630 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3631 declared to have a functional type, does not cause an error
3633 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3634 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3635 * fixed bug: if last continuation of a deleted block has a
3636 destination, this destination should be deleted too. (reported by
3638 * fixed a bug in the bootstrap process: the host compiler's values
3639 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3640 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3641 test case from Patrik Nordebo)
3642 * improved the ability of the disassembler on the PPC platform to
3643 provide helpful disassembly notes.
3644 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3645 the class in more cases than previously.
3646 * bug fix: FILE-POSITION now understands :START and :END for
3647 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3648 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3649 8) data. (thanks to David Lichteblau)
3650 * bug fix: it is possible to add a method to a generic function
3651 without lambda list.
3652 * bug fix: reader failed to signal END-OF-FILE inside an
3653 object representation. (reported by Nikodemus Siivola)
3654 * fixed some bugs revealed by Paul Dietz' test suite:
3655 ** LAST and [N]BUTLAST should accept a bignum.
3656 ** condition slot accessors are methods.
3657 ** (VECTOR NIL) is a subtype of STRING.
3659 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3660 * minor incompatible change: some nonsensical specialized lambda
3661 lists (used in DEFMETHOD) which were previously ignored now signal
3663 * minor incompatible change: the system is now aware of the types of
3664 variables in the COMMON-LISP package, and will signal errors for
3665 most violations of these type constraints (where previously they
3666 were silently accepted).
3667 * minor incompatible change: COMPILE-FILE now uses the freedom
3668 afforded (ANSI 3.2.2.3) to use derived function types for
3669 functions defined in the same file. This also permits the system
3670 to warn on static type mismatches and function
3671 redefinition. (Currently it does not work with high DEBUG level.)
3672 * minor incompatible change: VALUES declaration is disabled.
3673 * When issuing notes, the compiler now signals a condition of type
3674 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3675 restart for use in user handlers. It is expected that the
3676 COMPILER-NOTE condition will eventually become a condition
3677 supertype to a hierarchy of note types, which will then be
3678 handleable in a similar fashion. However, at the moment, no such
3679 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3680 but it's an implementation detail, not a classification for the
3682 * Changes in type checking closed the following bugs:
3683 ** type checking of unused values (192b, 194d, 203);
3684 ** template selection based on unsafe type assertions (192c, 236);
3685 ** type checking in branches (194bc).
3686 * A short form of VALUES type specifier has ANSI meaning (it has
3687 increased the number of situations when SBCL cannot perform type
3689 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3690 keywords or constants is permissible.
3691 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3692 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3693 classes. (thanks to Antonio Martinez)
3694 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3695 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3696 argument to a pretty-print stream. Instead, it leaves any such
3697 operations to DESCRIBE-OBJECT methods.
3698 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3700 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3701 lambda lists. (thanks to David Lichteblau)
3702 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3703 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3704 (thanks to Gerd Moellmann)
3705 * fixed bug 246: increased compilation speed of long
3706 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3708 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3710 * DEFCONSTANT now throws a condition of type
3711 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3712 constant to a non-EQL value; CONTINUE and ABORT restarts
3713 respectively change and preserve the value.
3714 * fixed bug 63: The code walker, part of the implementation of CLOS,
3715 is now better at handling symbol macros.
3716 * bug fix: There is no longer an internal implementation type named
3717 CL:LENGTH. (reported by Raymond Toy)
3718 * bug fix: In macro-like defining macros/special operators the
3719 implicit block does not enclose the lambda list.
3720 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3721 enclosed in parentheses) are not suitable as type specifiers, and
3722 their use properly signals an error now.
3723 * bug fix: An argument count mismatch for a type specifier in code
3724 being compiled no longer causes an unhandled error at compile
3725 time, but signals a compile-time warning.
3726 * fixed simple vector readable printing
3727 * bug fix: DESCRIBE takes more care over whether the class
3728 precedence list slot of a class is bound before accessing it.
3729 (reported by Markus Krummenacker)
3730 * bug fix: FORMATTER can successfully compile pretty-printer format
3731 strings which use variants of the ~* directive inside.
3732 * bug fix: SEARCH now applies its TEST predicate to the elements of
3733 the arguments in the correct order. (thanks to Wolfhard Buss)
3734 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3735 in type inference. (thanks to Robert E. Brown)
3736 * bug fix: Reading in symbols with an explicit package name of ""
3737 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3738 * fixed some bugs revealed by Paul Dietz' test suite:
3739 ** NIL is now allowed as a structure slot name.
3740 ** Arbitrary numbers, not just REALs, are allowed in certain
3741 circumstances in LOOP for-as-arithmetic clauses.
3742 ** Multiple class redefinitions before slot access no longer
3743 causes a type error.
3744 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3745 association between the name and a class.
3746 ** Generic functions with non-standard method-combination and over
3747 five methods all of which return constants no longer return NIL
3748 after the first few invocations. (thanks to Gerd Moellmann)
3749 ** CALL-NEXT-METHOD with no arguments now passes the original
3750 values of the arguments, even in the presence of assignment.
3751 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3753 ** DISASSEMBLE works with closures and funcallable instances.
3754 ** ADD-METHOD now returns the generic function, not the new method.
3755 ** FIND-METHOD signals an error if the lengths of the specializers
3756 is incompatible with the generic function, even if the ERRORP
3758 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3759 which its argument is a member.
3760 ** DEFCLASS only redefines the class named by its class-name
3761 argument if that name is the proper name of the class;
3762 otherwise, it creates a new class.
3763 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3764 of the UNBOUND-SLOT condition to the name of the slot.
3765 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3766 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3767 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3768 SLOT-MAKUNBOUND in the specified fashion.
3770 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3771 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3772 cross-compilation host. As a consequence, we can now bootstrap our
3773 way up to SBCL starting with a bare gcc toolchain and human-readable
3774 source code (first the source to CLISP, then the source to SBCL).
3775 * A contributed module containing a partial implementation of the
3776 simple-streams interface has been included. (thanks to Rudi
3778 * A contributed module implementing the RFC1321 Message Digest
3779 Algorithm, known as MD5, has been included.
3780 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3781 no longer has any effect, as the code controlled by this feature
3782 has been deleted. (As far as we know, no-one has ever built using
3783 this feature, and its semantics were confused in any case).
3784 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3785 work on conditions (as required by the ANSI specification),
3786 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3787 expected behaviour on conditions. Users should note, however,
3788 that such behaviour is not required by the ANSI specification,
3789 and so use of this behaviour may render their code unportable.
3790 * fixed some bugs revealed by Paul Dietz' test suite:
3791 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3793 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3794 ** SXHASH on condition objects no longer returns NIL.
3795 ** :ALLOCATION :CLASS slots are better treated; their values are
3796 updated on class redefinition, and initforms inherited from
3797 superclasses are applied.
3798 ** REMOVE-METHOD returns its generic function argument even when
3799 no method was removed.
3800 ** SHARED-INITIALIZE now initializes the values of the requested
3801 slots, including those with :ALLOCATION :CLASS.
3802 ** ALLOCATE-INSTANCE now works on structure classes defined via
3803 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3805 ** SLOT-EXISTS-P now works on conditions, as well as structures
3807 ** MAKE-LOAD-FORM now has the required methods on
3808 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3809 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3810 keyword, and now implements the SLOT-NAMES argument.
3811 ** methods with &OPTIONAL arguments no longer allow too many
3812 arguments to be passed in the call without error.
3813 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3814 option is consistent with the required arguments of the generic
3815 function lambda list.
3816 * bug fix: REQUIRE accepts a string designator. (Thanks to
3818 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3819 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3820 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3821 * bug fix: The compiler now checks for duplicated variables in macro
3823 * bug fix: SETQ on globals returns the correct value.
3824 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3825 not a COMPILER-ERROR (followed by some other strange error on
3826 choosing the CONTINUE restart).
3827 * bug fix: make.sh and friends are now more consistent in the way that
3828 they look for GNU "make".
3830 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3831 * experimental native threads support (on x86 Linux >=2.4 only).
3832 This is not compiled in by default: you need to add :SB-THREAD to
3833 the target features. See the "Beyond ANSI" chapter of the manual
3835 * fix for longstanding nonANSIism: The old distinction between
3836 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3837 The return value from CL:FIND-CLASS is now a CLOS class, and
3838 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3839 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3840 * An interface to the MetaObject Protocol, as described in Kiczales,
3841 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3842 MIT Press, 1991, is available from the SB-MOP package.
3843 * incompatible change: the SB-PCL package should now be considered
3844 a private implementation detail, and no longer a semi-private MOP
3846 * minor incompatible change: due to rearrangement for threads, the
3847 control stack and binding stack are now allocated at arbitrary
3848 addresses instead of being hardcoded per-port. Users affected by
3849 this probably have to be doing advanced things with shared
3850 libraries, and will know who they are.
3851 * minor incompatible change: Previously, all --eval forms used were
3852 processed with READ before any of them were processed with EVAL.
3853 Now each --eval form is processed with both READ and EVAL before
3854 the next --eval form is processed. (Thus package operations like
3855 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3856 work as the user might reasonably expect.)
3857 * minor incompatible change: *STANDARD-INPUT* is now only an
3858 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3860 * minor incompatible change: Y-OR-N-P is now character-oriented,
3861 not line oriented. Also, YES-OR-NO-P now works without errors.
3862 (thanks to Antonio Martinez)
3863 * sb-aclrepl module improvements: an integrated inspector, added
3864 repl features, and a bug fix to :trace command.
3865 * Known functions, which cannot be open coded by the backend, are
3866 considered to be able to check types of their arguments. (fixing
3867 a bug report by Nathan J. Froyd)
3868 * fixed a bug in computing method discriminating functions: It is
3869 now possible to define methods specialized on classes which have
3870 forward-referenced superclasses. (thanks to Gerd Moellmann)
3871 * fixed evaluation order in optional entries (reported by Gilbert
3873 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3874 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3875 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3876 required-by-AMOP NAME argument, as well as CLASS and
3877 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3878 * fixed bug 20: DEFMETHOD can define methods using names that are
3879 not the proper names of classes to designate class specializers.
3880 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3881 Unix file descriptors, instead of blowing up. (thanks to Antonio
3883 * Garbage collection refactoring: user-visible change is that a
3884 call to the GC function during WITHOUT-GCING will not do garbage
3885 collection until the end of the WITHOUT-GCING. If you were doing
3886 this you were probably losing anyway.
3887 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3888 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3889 TYPEP the latter but not the former.
3890 * The compiler issues a full WARNING for calls to undefined functions
3891 with names from the CL package.
3892 * MAP-INTO for a vector destination is open coded. (reported by
3893 Brian Downing on c.l.l)
3894 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3895 documentation string.
3896 * fixed some bugs revealed by Paul Dietz' test suite:
3897 ** COPY-ALIST now signals an error if its argument is a dotted
3899 ** Condition slots are now accessed more correctly in the presence
3900 of multiple initargs for a given slot.
3901 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3902 exclude restarts of the same name associated with a different
3904 ** DEFCLASS of forward-referenced classes with another
3905 forward-referenced class in the superclasses list no longer
3907 ** Condition slots are now initialized once each, not multiple
3908 times. (thanks to Gerd Moellmann)
3909 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3911 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3912 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3913 arguments contain duplicated elements.
3914 ** RESTART-CASE understands local macros.
3915 ** RESTART-CASE associates exactly its own restarts with a condition.
3916 ** ENDP in safe mode checks its argument to be of type LIST.
3917 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3918 in question is unbound.
3919 ** Optimized MAKE-INSTANCE functions no longer cause internal
3920 assertion failures in the presence of duplicate initargs.
3921 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3922 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3923 propagated even in the ctor optimized implementation of
3925 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3927 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3928 * a better implementation of SXHASH on (simple) bit vectors,
3929 measured both in execution speed and in distribution of results
3930 over the positive fixnums, has been installed. Likewise, a better
3931 implementation of EQUAL for simple bit vectors is now available.
3932 * fixed CEILING optimization for a divisor of form 2^k.
3933 * fixed bug 240 (emitting extra style warnings "using the lexical
3934 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3935 by Antonio Martinez)
3936 * fixed SXHASH, giving different results for NIL depending on type
3937 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3938 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3939 variable. (found by Rolf Wester)
3940 * SBCL does not ignore type declarations for special
3941 variables. (reported by rif on c.l.l 2003-03-05)
3942 * some bug fixes in contrib/sb-aclrepl/
3943 * fixed some bugs revealed by Paul Dietz' test suite:
3944 ** a bug in the CONS type specifier, whereby the CAR and CDR
3945 types got intertwined, has been fixed;
3946 ** the type system is now able to reason about the interaction
3947 between INTEGER and RATIO types more completely;
3948 ** APPEND, [N]REVERSE and NRECONC check that those their
3949 arguments, which must be proper lists, are really so;
3950 ** An array specialized to be unable to hold elements has been
3951 implemented, as required -- yes, really -- by ANSI;
3952 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3953 on malformed property lists;
3955 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3956 * incompatible packaging change: in line with Unix convention,
3957 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3958 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3959 * REQUIRE and PROVIDE are now optionally capable of doing something
3960 useful. See the documentation string for REQUIRE.
3961 * infrastructure for a managed SBCL contrib system: contributed
3962 modules in this release include:
3963 ** the ASDF system definition facility;
3964 ** an interface to the BSD Sockets API;
3965 ** an ACL-like convenience interface to the repl;
3966 (thanks to Kevin Rosenberg)
3967 ** an implementation of ROTATE-BYTE, with efficient implementation
3969 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3970 gives a closer approximation to the right answer than previously.
3971 (thanks to Raymond Toy)
3972 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3973 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3974 optional environment arguments, as required by ANSI.
3975 * fixed bugs in other functions taking environment objects, allowing
3976 calls with an explicit NIL environment argument to be compiled
3978 * fixed bug 228: primary return values from
3979 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3980 COMPILE or FUNCTION.
3981 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3982 :TYPE will no longer signal errors on innocuous objects.
3983 * fixed bug 231b: SETQ is better at respecting type declarations in
3984 the lexical environment.
3985 * fixed a bug in DEFCLASS: classes named by symbols with no or
3986 unprintable packages can now be defined.
3987 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3988 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3989 * fixed compiler failure related to checking types of functions.
3990 (reported by Robert E. Brown)
3991 * the compiler is now much more consistent in its error-checking
3992 treatment of bounding index arguments to sequence functions: in
3993 (SAFETY 3) code, errors will be signalled in almost all cases if
3994 invalid sequence bounding indices are passed to functions defined
3995 by ANSI to operate on sequences.
3996 * fixed a bug in the build procedure: documentation of SBCL-specific
3997 packages is now preserved and available in the final Lisp image.
3998 * lifted FDEFINITION lookup out of loops in the implementation of
3999 many list operations. (thanks to Robert E. Brown)
4000 * fixed a bug in the reader: the #n# reader macro now works for
4001 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4002 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4003 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4004 E. Brown and Tony Martinez respectively)
4005 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4006 SLOT-BOUNDP: in particular, it is now able to optimize them much
4007 better, and is now not vulnerable to having packages renamed.
4008 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4009 always called when a slot is not present in an instance. (thanks
4011 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4012 longer signal an error on unreading a character following EOF on
4013 the previous constituent stream. (thanks to Tony Martinez)
4014 * fixed some bugs revealed by Paul Dietz' test suite:
4015 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4016 not just nonnegative fixnums;
4017 ** the logical bit-array operators such as BIT-AND now accept an
4018 explicit NIL for their "opt-arg" argument (to indicate a
4019 freshly-consed result bit-array);
4020 ** ELT now signals an error on an invalid sequence index in safe
4022 ** the type system is now cleverer about negations of numeric
4023 types, and consequently understands the BIGNUM and RATIO types
4025 ** the type system is now cleverer about the interaction between
4026 INTEGER and RATIO types: while bugs still remain, many more
4027 cases are accurately computed;
4028 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4029 if it is in the last clause;
4030 ** CONSTANTLY now correctly returns a side-effect-free function in
4032 ** DECLARE is no longer treated as a special-operator; in
4033 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4034 * incremented fasl file version number due to the change in the
4035 DEFSTRUCT-SLOT-DESCRIPTION structure.
4037 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4038 * minor incompatible change: code processed by the "interpreter" or
4039 EVAL now has a compilation optimization policy of (DEBUG 2)
4040 (changed from (DEBUG 1)) to improve debuggability of interactive
4041 development, and to allow the use of the debug RETURN command in
4043 * an experimental implementation of the RETURN command for the
4044 debugger has been included. (thanks to Frederik Kuivinen)
4045 * fixed bug 62: constraints were not propagated into a loop.
4046 * fixed bug in embedded calls of SORT (reported and investigated by
4048 * fixed some bugs revealed by Paul Dietz' test suite:
4049 ** printing and reading of arrays with some dimensions having
4050 length 0 (thanks to Gerd Moellmann);
4051 ** BOA constructor with &AUX argument without a default value does
4052 not cause a type error;
4053 ** CONSTANTP now returns true for all self-evaluating objects.
4055 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4056 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4057 accessors that are related by inheritance, as specified in the
4058 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4059 Valtteri Vuorikoski)
4060 * The compiler is now able to inline functions that were defined in
4061 a complex lexical environment (e.g. inside a MACROLET).
4062 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4064 * Support for the upcoming FreeBSD-5.0 release has been included.
4065 (thanks to Dag-Erling Smorgrav)
4066 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4067 effect when it is not in a toplevel context.
4068 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4069 stand a better chance of being correct. (thanks to Gerd
4071 * fixed bug in COERCE, which now signals an error on coercing a
4072 rational to a bounded real type which excludes the expected
4074 * The compiler is now able to derive types more accurately from the
4075 COERCE and COMPILE functions.
4076 * fixed bug 223: functional binding is considered to be constant
4077 only for symbols in the CL package.
4078 * fixed bug 231: SETQ did not check the type of a variable being set
4079 (reported by Robert E. Brown)
4080 * A new optimization for MAKE-INSTANCE has been included, fixing
4081 various bugs (including relating to :ALLOCATION :CLASS slots and
4082 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4084 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4085 ** As required by ANSI, LOOP now disallows anonymous collection
4086 clauses such as COLLECT I in conjunction with aggregate boolean
4087 clauses such as THEREIS (= I 1);
4088 ** LOOP now signals an error when any variable is reused in the
4089 same loop (including the potentially useful construct analogous
4090 to WITH A = 1 WITH A = (1+ A);
4091 ** IT is only a special loop symbol within the first clause of a
4092 conditional loop clause;
4093 ** LOOP with a typed iteration variable over a hashtable now
4094 signals a type error iff it should.
4095 * fixed some other bugs revealed by Paul Dietz' test suite:
4096 ** FILE-STREAM now names the class previously known as FD-STREAM;
4097 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4098 argument) no longer signals an error;
4099 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4100 of the slot symbol, rather than using the current package
4101 ((:CONC-NAME "") continues to intern the slot's name in the
4103 * incremented fasl file version number, because of the incompatible
4104 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4105 of the new implementation of DEFINE-COMPILER-MACRO.
4107 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4108 * Support for building SBCL for MIPS platforms running in
4109 little-endian mode has now been checked in, and basic
4110 functionality on said platforms verified.
4111 * minor incompatible change: PCL now records the pathname of a file
4112 in which methods and the like are defined, rather than its
4114 * minor incompatible change: TRUENAME now considers the truename of
4115 a file naming a directory to be the pathname with :DIRECTORY
4116 component indicating that directory.
4117 * minor incompatible change: a NAMED clause in the extended form of
4118 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4119 reason for the previous behaviour is unclear.
4120 * more systematization and improvement of CLOS and MOP conformance
4121 in PCL (thanks to Gerd Moellman and Pierre Mai):
4122 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4124 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4125 primary methods with no specializers;
4126 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4128 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4129 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4130 FORWARD-REFERENCED-CLASSes; error reporting on
4131 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4133 ** SXHASH on CLOS instances now uses a slot internal to the
4134 instance to return different numbers on distinct instances,
4135 while preserving the same return value through invocations of
4137 ** DEFMETHOD signals errors when methods with longer incongruent
4138 lambda lists are added to generic functions;
4139 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4140 CLASS, as specified in AMOP;
4141 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4142 on the order returned by the primary method for classes of
4143 class STANDARD-CLASS;
4144 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4145 * fixed some bugs shown by Paul Dietz' test suite:
4146 ** DOLIST puts its body in TAGBODY;
4147 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4149 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4150 value producing form;
4151 ** if more variables are given to PROGV than values, extra
4152 variables are bound and made to have no value;
4153 ** NSUBSTITUTE on list arguments gets the right answer with
4155 ** ELT signals an error of type TYPE-ERROR when the index argument
4156 is not a valid sequence index;
4157 ** LOOP signals (at macroexpansion time) an error of type
4158 PROGRAM-ERROR when duplicate variable names are found;
4159 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4160 ** FUNCALL of special-operators now cause an error of type
4162 ** PSETQ now works as required in the presence of side-effecting
4163 symbol-macro places;
4164 ** NCONC accepts any object as its last argument;
4165 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4167 ** loop-for-as-package does not require a package to be explicitely
4169 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4171 * fixed bug 166: compiler preserves "there is a way to go"
4172 invariant when deleting code.
4173 * fixed bug 172: macro lambda lists with required arguments after
4174 &REST arguments now cause an error to be signalled. (thanks to
4176 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4177 bug. (thanks to Matthew Danish)
4178 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4180 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4181 arguments are lexically rebound. (thanks to Gerd Moellmann and
4183 * fixed bug 194: error messages are now more informative when there
4184 is no primary method applicable in a call to a generic
4185 function. (thanks to Gerd Moellmann)
4186 * fixed bug in command line argument checking (thanks to Julian
4188 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4189 (thanks to Matthew Danish)
4190 * incremented fasl file version number, because of the
4191 SXHASH-related changes in the layout of CLOS data structures
4193 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4194 * minor incompatible change: The runtime (the Unix executable named
4195 "sbcl") is now much pickier about the .core files it will load.
4196 Essentially it now requires .core files to descend from the same
4197 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4198 as the runtime does. (The intent is to prevent the crashes which
4199 can occur, and which can even be reported as mysterious failures,
4200 when people patch the sources or change the build parameters
4201 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4202 sbcl and .core files.)
4203 * fixed bug: VALUES-LIST is no longer optimized away.
4204 * fixed bug 142: The FFI conversion of C string values to Lisp
4205 string values no longer conses excessively. (thanks to Nathan
4206 Froyd porting Raymond Toy's fix to CMU CL)
4207 * began to systematize and improve MOP conformance in PCL (thanks to
4208 Nathan Froyd, Gerd Moellman and Pierre Mai):
4209 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4211 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4212 ** FINALIZE-INHERITANCE is now called on class finalization;
4213 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4214 argument precedence order.
4215 * fixed bug 202: The compiler no longer fails on functions whose
4216 derived types contradict their declared type.
4217 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4218 so it can be non-toplevel.
4219 * The fasl file version number has changed (because of the new
4220 implementation of DEFMACRO).
4221 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4222 safe code, that any length requirement by their type-specifier
4223 argument is valid. The exceptions to this are described in bug
4225 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4226 functions now check the types of their inputs as required by ANSI.
4227 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4228 introduced symbol is DECLAREd to be SPECIAL.
4229 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4230 * fixed bug: :COUNT argument to sequence functions may be negative
4231 * fixed bug: body of DO-SYMBOLS may contain declarations
4232 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4233 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4234 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4235 symbol macro only once
4236 * fixed printing of call frame when argument list is unavailable
4237 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4238 * compiler no longer signals WARNING on unknown keyword
4241 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4242 * A beta-quality port to the mips architecture running Linux,
4243 based on the old CMUCL backend, has been made. It has been tested
4244 on a big-endian kernel, and works sufficiently well to be able to
4245 rebuild itself; it has not been tested in little-endian mode.
4246 * fixed an inconsistency between gencgc.c and purify.c which made
4247 dumping/loading .core files unreliable
4248 * fixed bug 120a: The compiler now deals correctly with IFs where
4249 the consequent is the same as the alternative, instead of
4250 misderiving the return type. (thanks to Alexey Dejneka)
4251 * fixed bug 113: Logical pathnames are now dumpable (the logical
4252 host is resolved at load-time, throwing an error if it is not
4254 * fixed bug 174: FORMAT's error message is slightly clearer when a
4255 non-printing character is used in a format directive.
4256 * fixed several bugs in compiler checking of type declarations, i.e.
4257 violations of the Python "declarations are assertions" principle
4258 (thanks to Alexey Dejneka)
4259 * fixed several bugs in PCL's error checking (thanks to Gerd
4261 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4263 * fixed bug in compilation of functions as first class values
4264 (thanks to Antonio Martinez-Shotton)
4265 * The compiler's handling TYPE-ERRORs which it can prove will
4266 inevitably happen at runtime has been cleaned up and corrected
4267 in several ways. (thanks to Alexey Dejneka)
4268 * improved argument type checking for various basic arithmetic
4269 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4270 lavished on them in the past that they can be compiled in many
4271 ways in different special cases
4272 * fixed bug 181: compiler checks validity of user supplied type
4274 * cleaned up code flushing in optimization: Function calls which
4275 should signal errors for safety purposes (e.g. which ANSI says
4276 should signal errors when their arguments are of incorrect type)
4277 are no longer optimized away.
4278 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4279 * incremented fasl file version number, because changes in the
4280 implementation of sequence functions like COERCE caused
4281 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4282 in old inline expansions) to become undefined. (Actually these
4283 changes were later undone, so we might very well be binary
4284 compatible with 0.7.7 after all, but leaving the version number
4285 incremented seemed like the simplest and most conservative
4288 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4289 * An alpha-quality port to the parisc architecture running Linux,
4290 based on the old CMUCL backend, has been made. This, even more so
4291 than the other backends, should be considered still a work in
4292 progress; known problems include that the Linux kernel in 64-bit
4293 mode does not propagate the correct sigcontext structure to
4294 userspace, and consequently SBCL on a parisc64 kernel will not
4296 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4297 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4298 suppressed.) Also now that the compiler is looking at declarations
4299 in the environment, it checks optimization declarations as well,
4300 and suppresses inlining when (> DEBUG SPEED).
4301 * More fixes have been made to treatment of floating point exception
4302 treatment and other Unix signals. In particular, floating point
4303 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4304 * The detection and handling of control stack exhaustion (infinite
4305 or very deeply nested recursion) has changed. Stack exhaustion
4306 detection is now done by write-protecting pages at the OS level
4307 and applies at all optimization settings; when found, a
4308 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4309 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4310 be caught using IGNORE-ERRORS.
4311 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4312 correctly when transforming recursive LABELS functions to LETs.
4313 (thanks to Alexey Dejneka)
4314 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4315 that are names of constants or global variables.
4316 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4317 alien routines with docstrings.
4318 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4319 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4321 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4322 (thanks to Eric Marsden)
4323 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4324 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4325 * Bug fix: The SPARC backend can now compile functions involving
4326 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4327 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4328 to a functions expecting a PATHNAME-DESIGNATOR.
4329 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4330 lambda lists. (thanks to Alexey Dejneka)
4331 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4332 functions so that EXPORTing the name of the class doesn't cause
4333 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4334 to Antonio Martinez for reporting this)
4335 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4336 constant-folded without failing an assertion. (thanks to Einar
4337 Floystad Dorum for reporting this)
4338 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4339 types are now dealt with more correctly by the compiler.
4340 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4341 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4342 behaviour analogous to RENAME-FILE. This puts its behaviour more
4343 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4345 * The fasl file version number has changed again. (because of the
4346 bug fix involving the names of PCL MAKE-INSTANCE functions)
4348 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4349 * bug fix: Floating point exceptions are treated much more
4350 consistently on the x86/Linux and PPC/Linux platforms.
4351 * Array initialization with :INITIAL-ELEMENT is now much faster for
4352 cases when the compiler cannot open code the array creation, but
4353 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4354 array accesses have also seen a speed increase.
4355 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4356 specified. (This was at the root of some bad interactions between
4357 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4359 * bug fix: Internal error arguments for undefined functions are now
4360 computed correctly on the PPC/Linux platform.
4361 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4362 Raymond Toy's patch for CMU CL)
4363 * Support for the Solaris 9 operating environment has been included
4364 (thanks to Daniel Merritt)
4365 * A very ugly but hopefully complete draft of the missing FFI chapter
4366 of the manual has been created by reformatting the corresponding
4367 CMU CL manual chapter into (currently very ugly and incoherent)
4368 DocBook and bringing it up to date for SBCL behavior. Thus, the
4369 manual is now essentially complete, at least by my extreme
4370 once-and-only-once standards, whereby it's acceptable to refer to
4371 the doc strings of SB-EXT functions as the primary documentation.
4372 * The fasl file version number has changed again, due to cleanup of
4373 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4374 is no longer a static symbol.)
4376 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4377 * SBCL now builds with OpenMCL (version 0.12) as the
4378 cross-compilation host; also, more progress has been made toward
4379 bootstrapping under CLISP.
4380 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4382 * bug 158 fixed: The compiler can now deal with integer loop
4383 increments different from 1; fixing this turned out also to fix
4385 * bug 169 fixed: no more bogus warnings about using lexical bindings
4386 despite the presence of perfectly good SPECIAL declarations (thanks
4387 to David Lichteblau)
4388 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4389 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4390 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4392 * bug 180 fixed: Method combination specifications no longer ignore
4393 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4394 * bug fix: Structure type predicate functions now check their argument
4395 count as they should.
4396 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4397 correctly. (thanks to Pierre Mai)
4398 * minor incompatible change: The --noprogrammer option is deprecated
4399 in favor of the new --disable-debugger option, which is very similar.
4400 (The major difference is that it takes effect at a slightly different
4401 time at startup, causing handling of errors in --sysinit and
4402 --userinit files will be affected differently.) The
4403 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4404 been added to allow this functionality to be controlled from ordinary
4405 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4406 maintainers, who might want to run non-interactive scripts to
4407 build SBCL cores which will later be used interactively.)
4408 * minor incompatible change: The LOAD function no longer, when given
4409 a wild pathname to load, loads all files matching that pathname.
4410 Instead, an error of type FILE-ERROR is signalled.
4412 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4413 * bug 147 fixed: The compiler preserves its block link/count
4414 invariants more correctly now so that it doesn't crash. (thanks
4416 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4418 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4419 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4420 no-value-for-this-character as NIL (as specified by ANSI).
4421 * HOST-NAMESTRING on physical pathnames now returns a string that is
4422 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4423 (thanks to Christophe Rhodes)
4424 * The Alpha port handles icache flushing more correctly. (thanks to
4426 * More progress has been made toward bootstrapping under CLISP. (thanks
4427 to Christophe Rhodes)
4428 * The fasl file format has changed again, because dynamic loading
4429 on OpenBSD (which has non-ELF object files) motivated some cleanups
4430 in the way that foreign symbols are transformed and passed around.
4431 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4432 is no longer treated as whitespace by the reader, but instead as
4433 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4434 |A
\7fB|, instead of A as it used to.
4436 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4437 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4438 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4439 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4440 this as of 0.7.1.45, but was left out of the previous news section
4441 (thanks to Dan Barlow)
4442 * SBCL now runs on the Solaris operating system on SPARC architectures
4443 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4444 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4445 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4446 * SPARC backend cleanups, allowing builds of cores optimized for V8
4447 and V9 SPARCS, and also emission of code targeted to a particular
4448 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4450 * SBCL is closer to bootstrapping under CLISP, thanks to various
4451 fixes by Christophe Rhodes.
4452 * The fasl file format has changed again, to allow the compiler's
4453 INFO database to support symbol macros.
4454 * The user manual (in doc/) is formatted into HTML more nicely.
4455 (thanks to coreythomas)
4456 * The system is smarter about SUBTYPEP relationships, especially
4457 those involving NOT types (including types such as ATOM which are
4458 represented internally using NOT types). Thus SUBTYPEP is less
4459 likely to return (VALUES NIL NIL) in general, and in particular
4460 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4462 * The fasl file format has changed again, because the internal
4463 representation of types now includes a new slot to support the new
4464 SUBTYPEP-of-NOT-types logic.
4465 * (not a change in the main branch of SBCL, but a related prototype
4466 which can hopefully be merged into the main branch of SBCL in the
4467 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4468 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4469 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4470 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4471 dispatch macro character combinations. (thanks to Alexey Dejneka)
4472 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4473 that superficially look like logical namestrings correctly.
4474 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4476 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4477 default supplied-p) for &optional and &key arguments. (thanks to
4480 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4481 * incompatible change: The compiler is now less aggressive about
4482 tail call optimization, doing it only when (> SPACE DEBUG) or
4483 (> SPEED DEBUG). (This is an incompatible change because there are
4484 programs which relied on the old CMU-CL-style behavior to optimize
4485 away their unbounded recursion which will now die of stack overflow.)
4486 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4487 for non-GENCGC systems has been increased to 20M (since that
4488 seems much closer to the likely performance optimum for modern
4489 systems than the old 4M value was)
4490 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4491 and *DEBUG-PRINT-LEVEL*
4492 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4493 of CMU CL's support for SPARC, and various endianness and other
4494 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4495 * new syntactic sugar for the Unix command line: --load foo.bar is now
4496 an alternate notation for --eval '(load "foo.bar")'.
4498 ** The system now detects stack overflow and handles it gracefully,
4499 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4500 optimization settings. (This is a good thing in general, and
4501 its introduction in this version should be particularly timely
4502 for anyone whose code fails because of suppression of tail
4504 ** The system now hunts for the C variable "environ" in a more
4505 devious way, to avoid segfaults when the C library version differs
4506 between compile time and run time. (thanks to Christophe Rhodes)
4507 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4508 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4509 ** The compiler no longer issues bogus style warnings for undefined
4510 classes in the same source file as the DEFCLASSes which defined
4511 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4513 ** fixes in CONDITION class precedence list for undefined function
4514 errors (thanks to Alexei Dejneka)
4515 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4516 correctly. (thanks to Dan Barlow)
4517 ** portability fixes aiming at bootstrapping under CLISP (thanks
4518 to Dave McDonald and Christophe Rhodes)
4519 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4520 ** fixes in type translation and and type inference (thanks to
4522 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4523 ** various fixes in the new ports (thanks to Dan Barlow)
4524 * several changes related to debugging:
4525 ** suppression of tail recursion, as noted above
4526 ** stack overflow detection, as noted above
4527 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4528 is now the default. (For some time encapsulation has been more
4529 reliable than the breakpoint-based :ENCAPSULATE NIL
4530 implementation, at least on X86 systems; and I just noticed that
4531 encapsulation also seems closer to the spirit of the ANSI
4534 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4536 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4537 up properly again. (There was a packaging bug in 0.7.0 which
4538 left their definitions in SB-SYS::LOAD-FOREIGN and
4539 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4540 vital for most things which interface to C-level interfaces,
4541 like extensions working with sockets or databases or
4542 Perl-compatible regexes or whatever, and the need to fix
4543 this bug is the main reason that 0.7.1 was released so
4545 ** DEFGENERIC is now choosier about the methods it redefines, so that
4546 reLOADing a previously-LOADed file containing DEFGENERICs does
4547 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4548 cycle now works as it should. (thanks to Alexey Dejneka)
4549 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4550 fixed by Christophe Rhodes. (He actually submitted this patch
4551 months ago, and I delayed until after 0.7.0.)
4552 ** Bug 111 (internal compiler confusion about runtime checks on
4553 FUNCTION types) was fixed by Alexey Dejneka.
4554 * Some internal cleanups (getting rid of variables which aren't
4555 needed now that the byte interpreter is gone) caused the fasl
4556 file format number to change again.
4558 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4559 * major incompatible change: The default fasl file extension, i.e. the
4560 default extension for files produced by COMPILE-FILE, has changed
4561 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4563 ** There are many changes in the implementation of the compiler.
4564 SBCL is now essentially a compiler-only implementation of ANSI
4565 Common Lisp. EVAL still "interprets" a few special cases, but
4566 almost all the interesting cases are handled by creating
4567 a LAMBDA expression, calling COMPILE on it, then calling
4568 FUNCALL on the result.
4569 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4570 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4571 Since the code is newer, there might still be some new bugs
4572 (though not as many as before Martin Atzmueller's fixes:-). But
4573 the new code is substantially simpler and clearer, and hopefully
4574 any remaining bugs will be simpler, less fundamental, and more
4575 fixable then the bugs in the old code.
4576 ** The revised compiler is still a little unsteady on its feet.
4578 *** The debugging information it produces (particularly the names
4579 of FUNCTION objects) is sometimes much less useful than what
4580 the old compiler produced.
4581 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4582 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4583 within a MACROLET) has been temporarily weakened.
4584 ** There are new compiler optimizations for various functions:
4585 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4586 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4587 *** the math functions TRUNCATE, FLOOR, and CEILING
4588 *** the function-of-all-trades COERCE
4589 Mostly these should be transparent, but there's one
4590 potentially-annoying problem (bug 117): when the compiler
4591 inline-expands a function and does type analysis on the result,
4592 it can create control paths which have type mismatches, and
4593 when it can't prove that those control paths aren't taken,
4594 it will issue WARNINGs about the type mismatches. This is
4595 a particular problem in practice for the new sequence functions.
4596 It's not clear how this should be fixed, and for now, a
4597 workaround is given in the entry for 117 in the BUGS file.
4598 ** (Because of the interaction between the two previous items --
4599 occasional inlining problems and new inline expansions -- some
4600 of the new sequence function optimizations won't really kick in
4601 completely until debugging information, and then inlining, are
4602 straightened out in some future version.)
4603 * minor incompatible changes:
4604 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4605 DIRECTORY no longer implicitly promotes NIL slots of its
4606 pathname argument to :WILD. In particular, when you ask for the
4607 contents of a directory (which you used to be able to do without
4608 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4609 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4610 ** changes in behavior that ANSI explicitly defines to be
4611 implementation dependent:
4612 *** The new compiler-only implementation still conforms with ANSI,
4613 but acts a little different than before. Besides the obvious
4614 changes in performance tradeoffs (that the cost per form passed
4615 to EVAL has gone up, and the cost per form executed by EVAL
4616 has gone down), the behavior of the system changes a little
4617 because there are no longer any interpreted function objects.
4618 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4619 e.g. doing COMPILE on the output of interactive DEFUN is
4621 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4623 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4624 has changed from (:CL) to NIL.
4625 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4626 e.g. #\Newline and #\Tab, don't have names specified in the
4627 ANSI Common Lisp standard, is now based on their ASCII symbolic
4628 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4629 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4630 are no longer used for output.
4631 ** changes in internal implementation constants:
4632 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4633 4 million. (If your application spends a lot of time GCing and
4634 you have a lot of RAM, you might want to experiment with
4635 increasing it even more.)
4636 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4637 However, almost all old code should still continue to work without
4638 immediate update, as SB-C-CALL is now a (deprecated) nickname
4640 ** Old operator names in the style DEF-FOO are now deprecated in
4641 favor of new corresponding names DEFINE-FOO, for consistency with
4642 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4643 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4644 internal symbols, but a few supported extensions like
4645 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4646 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4647 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4648 etc. as you get deeper into recursive calls to the debugger
4649 command loop, instead of the old "5]", "5]]", "5]]]"
4650 sequence. (I was motivated to do this when squabbles between
4651 ILISP and SBCL left me very deeply nested in the debugger. In the
4652 short term, this change will probably provoke more ILISP/SBCL
4653 squabbles, but hopefully it will be an improvement in the long run.)
4654 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4655 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4656 function, since declaiming return types involving aliens is
4657 (1) annoyingly messy to do by hand and (2) vital to efficient
4658 compilation of code which calls such functions.
4659 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4660 longer reexported by the SB-EXT package. They're solely useful
4661 for alien code, so it seems more logical that you should get
4662 them from the SB-ALIEN package, not in SB-EXT.
4663 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4664 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4665 features. Instead, the code that they used to control is always
4666 built into the system.
4667 * many other bug fixes
4668 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4669 advantage of the new EVAL-WHEN stuff and to clean them up in
4670 general, and they are now more ANSI-compliant in a number of
4671 ways. Martin Atzmueller is responsible for a lot of this.
4672 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4674 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4675 *** correct ERROR type for various file operations
4676 *** some fixes for Lisp streams
4677 *** DEFMETHOD syntax checking
4678 *** changing old weird representation of debug information as
4679 strings (which, among their other deficiencies, don't transform
4680 correctly when you rename packages, and don't change their
4681 print representation when you change things like *PACKAGE*
4682 and *PRINT-LENGTH*) to symbols and lists of symbols
4683 He also made several improvements and fixed several bugs in DESCRIBE.
4684 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4686 *** misbehavior of WRITE-STRING/WRITE-LINE
4687 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4688 and several other LOOP problems as well
4689 *** DIRECTORY when similar filenames are present
4690 *** DEFGENERIC with :METHOD options
4691 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4692 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4693 *** argument ordering in FIND with :TEST option
4694 *** mishandled package designator argument in APROPOS-LIST
4695 *** various problems in the backquote readmacro
4696 *** a bug in APROPOS
4697 *** probably some others that I'm not describing very well here,
4698 since the CVS log documents them by reference to sbcl-devel
4699 messages, and the SourceForge archives aren't working well.:-(
4700 ** Dan Barlow improved the Alpha port (and is making progress on the
4701 PPC port, for those of you who think different).
4702 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4703 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4704 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4705 continues to work on the SPARC port (for those of you in a position
4706 to look down upon our little PC-compatible boxes from a great height).
4707 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4708 and uses that copy, rather than the current dynamic value, when
4709 it's trying to decide whether to truncate output. Thus e.g.
4710 (let ((*print-lines* 50))
4711 (pprint-logical-block (stream nil)
4713 (let ((*print-lines* 8))
4714 (print (aref possiblybigthings i) stream)))))
4715 should now truncate the logical block only at 50 lines, instead of
4716 often truncating it at 8 lines, as it did before.
4717 * The doc/cmucl/ directory, containing old CMU CL documentation
4718 from the time of the fork, is no longer part of the base system.
4719 SourceForge has shut down its anonymous FTP service, and with it
4720 my original plan for distributing the old CMU CL documentation
4721 there. For now, if you need these files you can download an old
4722 SBCL source release and extract them from it.
4723 * The fasl file version number changed again, for dozens of reasons,
4724 some of which are apparent above.
4726 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4727 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4728 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4729 patch, so that DISASSEMBLE output is much nicer.
4730 * The code in the SB-PROFILE package now seems reasonably stable.
4731 I still haven't decided what the final interface should look like
4732 (I'd like PROFILE to interact cleanly with TRACE, since both
4733 facilities use function encapsulation) but if you have a need
4734 for profiling now, you can probably use it successfully with
4735 the current CMU-CL-style interface.
4736 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4737 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4738 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4739 link now returns the dangling link itself, and for similar
4740 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4741 link itself. (In these cases the old code signalled an error and
4742 looped endlessly, respectively.) Thus, DIRECTORY now works even
4743 in the presence of dangling and cyclic symbolic links.
4744 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4745 is now a supported extension again, since the consensus on
4746 sbcl-devel was that it can be useful for ordinary development
4747 work, not just for debugging SBCL itself.
4748 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4749 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4750 that currently-defined functions might be redefined later with
4751 different return types.
4752 * Hash tables can be printed readably, as inspired by CMU CL code
4753 of Eric Marsden and SBCL code of Martin Atzmueller.
4754 * better error handling in CLOS method combination, thanks to
4755 Martin Atzmueller porting Pierre Mai's CMU CL patches
4756 * more overflow fixes for >16Mbyte I/O buffers
4757 * A bug in READ has been fixed, so that now a single Ctrl-D
4758 character suffices to cause end-of-file on character streams.
4759 In particular, now you only need one Ctrl-D at the command
4760 line (not two) to exit SBCL.
4761 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4763 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4764 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4765 does the right thing.
4766 * The implementation of some type tests, especially for CONDITION
4767 types, is now tidier and maybe faster, due to CMU CL code
4768 originally by Douglas Crosher, ported by Martin Atzmueller.
4769 * Some math functions have been fixed, and there are new
4770 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4771 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4772 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4773 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4774 likely to be built into sbcl-0.7.0.)
4775 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4776 CL, ported to SBCL by Martin Atzmueller)
4777 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4778 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4779 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4780 * There's a new slam.sh hack to shorten the edit/compile/debug
4781 cycle for low-level changes to SBCL itself, and a new
4782 :SB-AFTER-XC-CORE target feature to control the generation of
4783 the after-xc.core file needed by slam.sh.
4784 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4785 COMPILE-FILE is no longer supported, so that now every function
4786 gets an entry point, so that block compilation looks a little
4787 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4788 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4789 returns the number of bytes consed since the system started,
4790 rather than the number consed since the first time the function
4791 was called. (The new definition parallels ANSI functions like
4792 CL:GET-INTERNAL-RUN-TIME.)
4793 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4794 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4795 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4796 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4797 * Fasl file version numbers are now independent of the target CPU,
4798 since historically most system changes which required version
4799 number changes have affected all CPUs equally. Similarly,
4800 the byte fasl file version is now equal to the ordinary
4803 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4804 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4805 is no longer recognized. I apologize for this, because it was
4806 listed in SB-EXT as a supported extension, but I found that
4807 its existing behavior was poorly specified, as well as incorrectly
4808 specified, and it looked like too much of a mess to straighten it
4809 out. I have enough on my hands trying to get ANSI stuff to work..
4810 * many patches ported from CMU CL by Martin Atzmueller, with
4811 half a dozen bug fixes in pretty-printing and the debugger, and
4812 half a dozen others elsewhere
4813 * fixed bug 13: Floating point infinities are now supported again.
4814 They might still be a little bit flaky, but thanks to bug reports
4815 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4816 as flaky as they were.
4817 * The --noprogrammer command line option is now supported. (Its
4818 behavior is slightly different in detail from what the old man
4819 page claimed it would do, but it's still appropriate under the
4820 same circumstances that the man page talks about.)
4821 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4822 are now supported, and enabled by default. Thus, the compiler can
4823 handle many floating point and complex operations much less
4824 inefficiently. (Thus e.g. you can implement a complex FFT
4826 * The compiler now detects type mismatches between DECLAIM FTYPE
4827 and DEFUN better, and implements CHECK-TYPE more correctly, and
4828 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4829 thanks to patches from Martin Atzmueller.
4830 * various fixes to make the cross-compiler more portable to
4831 ANSI-conforming-but-different cross-compilation hosts (notably
4832 Lispworks for Windows, following bug reports from Arthur Lemmens)
4833 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4834 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4835 fixed thanks to Pierre Mai's CMU CL patches.
4836 * fixes to keep the system from overflowing internal counters when
4837 it tries to use i/o buffers larger than 16M bytes
4838 * fixed bug 45a: Various internal functions required to support
4839 complex special functions have been merged from CMU CL sources.
4840 (When I was first setting up SBCL, I misunderstood a compile-time
4841 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4842 * improved support for type intersection and union, fixing bug 12
4843 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4844 more obscure bugs as well
4845 * some steps toward byte-compiling non-performance-critical
4846 parts of the system, courtesy of patches from Martin Atzmueller
4847 * Christophe Rhodes has made some debian packages of sbcl at
4848 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4849 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4850 stable, but are nonetheless usable. When he's ready, I'd be happy
4851 to add them to the SourceForge "File Releases" section. (And if
4852 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4853 * new fasl file format version number (because of changes in
4854 internal representation of (OR ..) types to accommodate the new
4855 support for (AND ..) types, among other things)
4857 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4858 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4860 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4862 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4863 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4864 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4865 * DESCRIBE now works on structure objects again.
4866 * Most function call argument type mismatches are now handled as
4867 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4868 know whether the function will be redefined before the call is
4869 executed. (The compiler could flag local calls with full WARNINGs,
4870 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4871 it doesn't keep track of enough information to know whether calls
4872 are local in this sense.)
4873 * Compiler output is now more verbose, with messages truncated
4874 later than before. (There should be some supported way for users
4875 to override the default verbosity, but I haven't decided how to
4876 provide it yet, so this behavior is still controlled by the internal
4877 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4878 src/compiler/ir1util.lisp.)
4879 * Fasl file format version numbers have increased again, because
4880 support for the Gray streams extension changes the layout of the
4881 system's STREAM objects.
4882 * The Gray subclassable streams extension now works, thanks to a
4883 patch from Martin Atzmueller.
4884 * The full LOAD-FOREIGN extension (not just the primitive
4885 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4886 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4887 but like most other programs, it defaults to copying the Unix
4888 environment from the original process instead of starting the
4889 new process in an empty environment.
4890 * Extensions which manipulate the Unix environment now support
4891 an :ENVIRONMENT keyword option which doesn't smash case or
4892 do other bad things. The CMU-CL-style :ENV option is retained
4893 for porting convenience.
4894 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4895 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4897 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4899 * A patch from Martin Atzmueller seems to have solved the SIGINT
4900 problem, and as far as we know, signal-handling now works cleanly.
4901 (If you find any new bugs, please report them!)
4902 * The system no longer defaults Lisp source file names to types
4903 ".l", ".cl", or ".lsp", but only to ".lisp".
4904 * The compiler no longer uses special default file extensions for
4905 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4906 seems to expect a single default extension for all compiled code,
4907 and there's no compelling reason to try to stretch the standard
4908 to allow two different extensions.) Instead, byte-compiled files
4909 default to the same extension as native-compiled files.
4910 * Fasl file format version numbers have increased again, because
4911 a rearrangement of internal implementation packages made some
4912 dumped symbols in old fasl files unreadable in new cores.
4913 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4914 many fewer weird special cases.
4915 * Bug #17 (differing COMPILE-FILE behavior between logical and
4916 physical pathnames) has been fixed, and some related misbehavior too,
4917 thanks to a patch from Martin Atzmueller.
4918 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4919 by Tim Moore, ported to SBCL by Martin Atzmueller.
4920 * Martin Atzmueller fixed several filesystem-related problems,
4921 including bug #36, in part by porting CMU CL patches, which were
4922 written in part by Paul Werkowski.
4923 * More compiler warnings in src/runtime/ are gone, thanks to
4924 more patches from Martin Atzmueller.
4925 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4928 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4930 * DESCRIBE now works on CONDITION objects.
4931 * The debugger now handles errors which arise when trying to print
4932 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4934 * The build system now uses an additional file, customize-target-features.lisp,
4935 to allow local modifications to the target *FEATURES* list. (The point of
4936 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4937 debugging features enabled, without having to worry about propagating it
4938 into everyone's system when I do a "cvs update".) When no
4939 customize-target-features.lisp file exists, the target *FEATURES* list
4940 should be constructed the same way as before.
4941 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4942 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4943 warn about behavior which is undefined under the ANSI spec. Note: This
4944 is specified by ANSI, but it's not very popular with programmers.
4945 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4946 macro in the SBCL sources for an example of a workaround which you
4947 might use to make portable ANSI-standard code which does what you want.
4948 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4949 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4950 when it's used as a non-toplevel form. (This is required in order
4951 to implement the DEFCONSTANT-EQX macro.)
4952 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4953 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4954 funny things, due to bugs in the implementation of EVAL-WHEN
4955 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4956 non-toplevel DEFCONSTANTs are uncommon.)
4957 * The core file version number and fasl file version number have been
4958 incremented, because the old noncompliant DEFCONSTANT behavior involved
4959 calling functions which no longer exist, and because I also took the
4960 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4961 * fixed bug 1 (error handling before read-eval-print loop starts), and
4962 redid debugger restarts and related debugger commands somewhat while
4964 ** The QUIT debugger command is gone, since it did something
4965 rather different than the SB-EXT:QUIT command, and since it never
4966 worked properly outside the main toplevel read/eval/print loop.
4967 Invoking the new TOPLEVEL restart provides the same functionality.
4968 ** The GO debugger command is also gone, since you can just invoke
4969 the CONTINUE restart directly instead.
4970 ** The TOP debugger command is also gone, since it's redundant with the
4971 FRAME 0 command, and since it interfered with abbreviations for the
4973 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4975 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4976 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4977 some porting work by Martin Atzmueller)
4978 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4979 with a boatload of patches which he ported to SBCL. Now that those
4981 ** The system tries to make sure that its low-priority messages
4982 are prefixed by semicolons, to help people who like to use
4983 syntax highlighting in their ILISP buffer. (This patch
4984 was originally due to Raymond Toy.)
4985 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4986 patches originally written by Raymond Toy.
4987 ** The compiler understands coercion between single-value and
4988 multiple-VALUES type expressions better, getting rid of some very
4989 weird behavior, thanks to patches originally by Robert MacLachlan
4990 and Douglas Crosher.
4991 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4992 lambda lists, thanks to a patch originally by Pierre Mai.
4993 ** The system no longer bogusly warns about "abbreviated type
4995 ** The compiler gets less confused by inlining and RETURN-FROM,
4996 thanks to some patches originally by Tim Moore.
4997 ** The system no longer hangs when dumping circular lists to fasl
4998 files, thanks to a patch originally from Douglas Crosher.
4999 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5000 undefined function error.
5001 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5002 in structure slot initforms) for now, documented workaround instead:-|
5003 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5004 * fixed bug 5: added stubs for various Gray stream functions called
5005 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5006 installed, at least appropriate type errors are generated
5007 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5008 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5009 consistently in DEFMETHOD forms.
5010 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5011 it doesn't seem to affect SBCL after all
5012 * The C runtime system now builds with better optimization and many
5013 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5015 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5017 * The system is now under CVS at SourceForge (instead of the
5018 CVS repository on my home machine).
5019 * The new signal handling code has been tweaked to treat register
5020 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5021 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5022 downstream, e.g. in debug-int.lisp, has implicit dependencies
5023 on the unsignedness of integer representation of machine words,
5024 and that caused the system to bomb out with infinite regress
5025 when trying to recover from type errors involving signed values,
5026 e.g. (BUTLAST '(1 2 3) -1).)
5027 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5028 (This was one of the bugs Peter Van Eynde reported back in July.)
5029 * The system now uses code inspired by Colin Walters' O(N)
5030 implementation of MAP (from the cmucl-imp@cons.org mailing
5031 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5032 inline the MAP operation, and there is more than one
5033 sequence argument to the MAP call (so that it can't just
5034 do ETYPECASE once and for all based on the type of the
5035 single sequence argument). (The old non-inline implementation
5036 of the general M-argument sequence-of-length-N case required
5037 O(M*N*N) time when any of the sequence arguments were LISTs.)
5038 * The QUIT :UNIX-CODE keyword argument has been renamed to
5039 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5040 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5042 * Raymond Wiker's patches to port dynamic loading from Linux to
5043 FreeBSD have been added.
5044 * The BUGS file is now more nearly up to date, thanks in large part
5045 to Martin Atzmueller's review of it.
5046 * The debugger now flushes standard output streams before it begins
5047 its output ("debugger invoked" and so forth).
5048 * The core version number and fasl file version number have both
5049 been incremented, because of incompatible changes in the layout
5051 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5052 used to not be called for a saved Lisp image.)
5053 * Martin Atzmueller's version of a patch to fix a compiler crash,
5054 as posted on sbcl-devel 13 September 2000, has been installed.
5055 * Instead of installing Martin Atzmueller's patch for the
5056 compiler transform for SUBSEQ, I deleted the compiler transform,
5057 and transforms for some similar consing operations.
5058 * A bug in signal handling which kept TRACE from working on OpenBSD
5060 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5061 away by constant folding
5062 * The system now defines its address space constants in one place
5063 (in the Lisp sources), and propagates them automatically elsewhere
5064 (through GENESIS and the sbcl.h file). Therefore, patching the
5065 address map is less unnecessarily tedious and error-prone. The
5066 Lisp names of address space constants have also been systematized.
5067 * CVS tags like dollar-Header-dollar have been removed from
5068 the sources, because they have never saved me trouble and
5069 they've been source of trouble working with patches and other
5070 diff-related operations.
5071 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5072 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5074 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5076 * The system has been ported to OpenBSD.
5077 * The system now compiles with a simple "sh make.sh" on the systems
5078 that it's supported on. I.e., now you no longer need to tweak
5079 text in the target-features.lisp-expr and symlinks in src/runtime/
5080 by hand, the make.sh takes care of it for you.
5081 * The system is no longer so grossly inefficient when compiling code
5082 involving vectors implemented as general (not simple) vectors (VECTOR T),
5083 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5084 which dares to use the various sequence functions on non-simple
5085 vectors, takes less of a performance hit.
5086 * There is now a primitive type predicate VECTOR-T-P
5087 to test for the (VECTOR T) type, so that e.g.
5088 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5089 can now be compiled with some semblance of efficiency. (The old code
5090 turned the type declaration into a full call to %TYPEP at runtime!)
5091 * AREF on (VECTOR T) is still not fast, since it's still compiled
5092 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5093 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5094 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5095 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5096 without making full calls to SUBTYPEP at runtime.
5097 (Some analogous efficiency issues for non-simple vectors specialized to
5098 element types other than T, or for non-simple multidimensional arrays,
5099 have not been addressed. They could almost certainly be handled the
5100 same way if anyone is motivated to do so.)
5101 * The changes in array handling break binary compatibility, so
5102 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5103 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5104 instead of (VALUES T T).
5105 * By following the instructions that Dan Barlow posted to sbcl-devel
5106 on 2 July 2000, I was able to enable primitive dynamic object
5107 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5108 functionality is not implemented (since it calls ld to resolve
5109 library references automatically, requiring RUN-PROGRAM for its
5110 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5111 try to resolve library references) is now supported.
5112 * The system now flushes the standard output streams when it terminates,
5113 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5114 them at several other probably-convenient times, e.g. in each pass of
5115 the toplevel read-eval-print loop, and after evaluating a form given
5116 as an "--eval" command-line option. (These changes were motivated by a
5117 discussion of stream flushing issues on cmucl-imp in August 2000.)
5118 * The source transform for TYPEP of array types no longer assumes
5119 that an array whose element type is a not-yet-defined type
5120 is implemented as an array of T, but instead punts, so that the
5121 type will be interpreted at runtime.
5122 * There is now some support for cross-compiling in make.sh: each of
5123 the phases of make.sh has its own script. (This should be transparent
5124 to people doing ordinary, non-cross-compile builds.)
5125 * Since my laptop doesn't have hundreds of megabytes of memory like
5126 my desktop machine, I became more motivated to do some items on
5127 my to-do list in order to reduce the size of the system a little:
5128 ** Arrange for various needed-only-at-cold-init things to be
5129 uninterned after cold init. To support this, those things have
5130 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5131 symbols with such names are now uninterned after cold init).
5132 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5133 fasl files for cold load.
5134 ** Remove the old compiler structure pooling code (which used to
5135 be conditional on the target feature :SB-ALLOC) completely.
5136 ** Redo the representation of some data in cold init to be more compact.
5137 (I also looked into supporting byte compiled code at bootstrap time,
5138 which would probably reduce the size of the system a lot, but that
5139 looked too complicated, so I punted for now.)
5140 * The maximum signal nesting depth in the src/runtime/ support code has
5141 been reduced from 4096 to 256. (I don't know any reason for the very
5142 large old value. If the new smaller value turns out to break something,
5143 I'll probably just bump it back up.)
5144 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5146 * Many, many bugs reported by Peter Van Eynde have been added to
5147 the BUGS list; some have even been fixed.
5148 * While enabling dynamic object file loading, I tried to make the
5149 code easier to understand, renaming various functions and variables
5150 with less ambiguous names, and changing some function calling
5151 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5152 * While trying to figure out how to do the OpenBSD port, I tried to
5153 clean up some of the code in src/runtime/. In particular, I dropped
5154 support for non-POSIX signal handling, added various comments,
5155 tweaked the code to reduce the number of compilation warnings, and
5156 renamed some files to increase consistency.
5157 * To support the new automatic configuration functionality in make.sh,
5158 the source file target-features.lisp-expr has been replaced with the
5159 source file base-target-features.lisp-expr and the machine-generated
5160 file local-target-features.lisp-expr.
5161 * fixed a stupid quoting error in make.sh so that using CMU CL
5162 "lisp -batch" as cross-compilation host works again
5164 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5166 * DESCRIBE no longer tries to call itself recursively to describe
5167 bound/fbound values, so that it no longer fails on symbols which are
5168 bound to themselves (like keywords, T, and NIL).
5169 * DESCRIBE now works on generic functions.
5170 * The printer now prints less-screwed-up representations of closures
5171 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5172 * A private symbol is used instead of the :EMPTY keyword previously
5173 used to mark empty slots in hash tables. Thus
5174 (DEFVAR *HT* (MAKE-HASH-TABLE))
5175 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5176 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5177 now does what ANSI says that it should. (You can still get
5178 similar noncompliant behavior if bang on the hash table
5179 implementation with all the symbols you get back from
5180 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5181 This breaks binary compatibility, since tests for equality to
5182 :EMPTY are wired into things like the macroexpansion of
5183 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5185 * There's now a minimal placeholder implementation for CL:STEP,
5186 as required by ANSI.
5187 * An obscure bug in the interaction of the normal compiler, the byte
5188 compiler, inlining, and structure predicates has been patched
5189 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5190 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5192 * Missing ordinary arguments in a macro call are now detected even
5193 when the macro lambda list contains &KEY or &REST.
5194 * The debugger no longer complains about encountering the top of the
5195 stack when you type "FRAME 0" to explicitly instruct it to go to
5196 the top of the stack. And it now prints the frame you request even
5197 if it's the current frame (instead of saying "You are here.").
5198 * As specified by ANSI, the system now always prints keywords
5199 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5201 * The default initial SIZE of HASH-TABLEs is now smaller.
5202 * Type information from CLOS class dispatch is now propagated
5203 into DEFMETHOD bodies, so that e.g.
5204 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5206 is now basically equivalent to
5207 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5208 (DECLARE (TYPE SINGLE-FLOAT X))
5210 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5211 operation, without having to do run-time type dispatch.
5212 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5213 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5214 * Since I don't seem to be making big file reorganizations very often
5215 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5216 is overflowing my ability to conveniently back them up), I've finally
5217 checked the system into CVS. (The CVS repository is on my home system,
5218 not at SourceForge -- putting it on SourceForge might come later.)
5219 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5220 high-level GC-NOTIFY-FOO functions send their output. (There's
5221 still very little control of where low-level verbose GC functions
5222 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5223 less than it used to -- the GC-NOTIFY-FOO functions are now under
5224 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5225 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5226 in only one place in the source code, and propagates it automatically
5227 everywhere that it's needed. Thus e.g. when I bump the version from
5228 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5229 * The C source files now include boilerplate legalese and documentation
5230 at the head of each file (just as the Lisp source files already did).
5231 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5232 to his page will be replaced with a link to his new CLiki service.
5234 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5236 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5237 * The build process now looks for GNU make under the default name "gmake",
5238 instead of "make" as it used to. If GNU make is not available as "gmake"
5239 on your system, you can change this default behavior by setting the
5240 GNUMAKE environment variable.
5241 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5242 can build without error under CMU CL.
5244 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5246 * There is now a partial SBCL user manual (with some new text and some
5247 text cribbed from the CMU CL manual).
5248 * The beginnings of a profiler have been added (starting with the
5249 CMU CL profiler and simplifying and cleaning up). Eventually the
5250 main interface should be through the TRACE macro, but for now,
5251 it's still accessed through vaguely CMU-CL-style functions and macros
5252 exported from the package SB-PROFILE.
5253 * Some problems left over from porting CMU CL to the new
5254 cross-compilation bootstrap process have been cleaned up:
5255 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5256 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5257 part when getting rid of the compiler *BACKEND* stuff.)
5258 ** The value of *NULL-TYPE* was screwed up, because it was
5259 being initialized before the type system knew the final
5260 definition of the 'NULL type. This screwed up several key
5261 optimizations in the compiler, causing inefficiency in all sorts
5262 of places. (I found it because I wanted to understand why
5263 GET-INTERNAL-RUN-TIME was consing.)
5264 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5265 PROCLAIM FTYPE information. Unfortunately this broke binary
5266 compatibility again, since now the forms output by DEFGENERIC
5267 to refer to functions which didn't exist in 0.6.3.
5268 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5269 can use the new (as of 0.6.3) transform for SOME into MAP into
5271 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5272 values to (INTEGER 0 1000000), so that the time code will no longer
5273 occasionally get blown up by Linux returning 1000000 microseconds
5274 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5275 its output conform to the ANSI spec. (Alas, this makes its output
5276 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5277 * A full call to MAP NIL with a single sequence argument no longer conses.
5278 * fixes to problems pointed out by Martin Atzmueller:
5279 * The manual page no longer talks about multiprocessing as though
5280 it were currently supported.
5281 * The ILISP support patches have been removed from the distribution,
5282 because as of version 5.10.1, ILISP now supports SBCL without us
5283 having to maintain patches.
5284 * added a modified version of Raymond Toy's recent CMU CL patch for
5285 EQUALP comparison of HASH-TABLE
5287 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5289 * The system still can't cross-compile itself with
5290 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5291 entails), but at least it can compile more of itself that way
5292 than it used to be able to, and various buglets which were uncovered
5293 by trying to cross-compile itself that way have now been fixed.
5294 * This release breaks binary compatibility again. This time
5295 at least I've incremented the FASL file format version to 2, so that the
5296 problem can be detected reliably instead of just causing weird errors.
5297 * various new style warnings:
5298 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5299 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5300 ** using the lexical binding of a variable named in the *FOO* style
5301 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5302 as specified by ANSI.
5303 * *RANDOM-STATE* is no longer automatically initialized from
5304 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5305 default behavior of the system is to repeat its behavior every time
5306 it's run. If you'd like to change this behavior, you can always
5307 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5308 old convention there was no comparably easy way to get the system to
5309 repeat its behavior every time it was run.
5310 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5311 FTYPE declarations has been removed, in favor of their ANSI
5312 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5313 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5314 the types of their sequence arguments can be determined at compile time.
5315 This is done through a new open code expansion for MAP which eliminates
5316 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5317 argument types can be determined at compile time.
5318 * The optimizer now transforms COERCE into an identity operation when it
5319 can prove that the coerced object is already of the correct type. (This
5320 can be a win for machine generated code, including the output of other
5321 optimization transforms, such as the MAP transform above.)
5322 * Credit information has been moved from source file headers into CREDITS.
5323 * Source file headers have been made more standard.
5324 * The CASE macro now compiles without complaining even when it has
5327 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5329 * (Note that the way that the PCL macroexpansions were rewritten
5330 to accommodate the change in DEFGENERIC below breaks binary
5331 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5332 not run under sbcl-0.6.2. Once we get out of alpha releases,
5333 i.e. hit release 1.0.0, we'll probably try to maintain binary
5334 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5335 and sbcl-1.4.4. Until then, however, it might be fairly common
5336 for maintenance releases to break binary compatibility.)
5337 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5339 * The reporting of unhandled signals has been changed to print some
5340 explanatory text as well as the report form. (Previously only
5341 the report form was printed.)
5342 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5343 it defines, so that the compiler no longer issues undefined function
5344 warnings for compiled-but-not-yet-loaded generic functions.
5345 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5346 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5347 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5348 section of the ANSI spec are supported.
5349 * The "" nickname for the "KEYWORD" package has been removed.
5350 The reader still handles symbol tokens which begin with a package marker
5351 as keywords, but it doesn't expose its mechanism for doing so in the
5352 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5353 * The system now issues STYLE-WARNINGs for contradictory TYPE
5354 proclamations. (Warnings for contradictory FTYPE proclamations would
5355 be nice too, but those can't be done usefully unless the type system
5356 is made smarter about FUNCTION types.)
5357 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5358 systematized, so that "*target-*.lisp is supposed to exist only on the
5359 target and imply that there's a related file which exists on the
5360 host, and *host-*.lisp is supposed to exist only on the host and imply
5361 that there's a related file which exists on the target. This involves a
5362 lot of renaming. Hopefully the acute confusion caused by the renaming
5363 will be justified by the reduction in chronic confusion..
5364 ** runtime-type.lisp -> early-target-type.lisp
5365 ** target-type.lisp -> late-target-type.lisp
5366 ** early-host-format.lisp -> early-format.lisp
5367 ** late-host-format.lisp -> late-format.lisp
5368 ** host-error.lisp -> misc-error.lisp
5369 ** early-error.lisp -> early-target-error.lisp
5370 ** late-error.lisp -> late-target-error.lisp
5371 ** host-defboot.lisp -> early-defboot.lisp
5372 ** code/misc.lisp -> code/target-misc.lisp
5373 ** code/host-misc.lisp -> code/misc.lisp
5374 ** code/numbers.lisp -> code/target-numbers.lisp
5375 ** code/early-numbers.lisp -> numbers.lisp
5376 ** early-host-type.lisp -> early-type.lisp
5377 ** late-host-type.lisp -> late-type.lisp
5378 ** host-typep.lisp -> typep.lisp
5379 ** load.lisp -> target-load.lisp
5380 ** host-load.lisp -> load.lisp
5381 ** host-disassem.lisp -> disassem.lisp
5382 ** host-insts.lisp -> insts.lisp
5383 ** byte-comp.lisp -> target-byte-comp.lisp
5384 ** host-byte-comp.lisp -> byte-comp.lisp
5385 ** host-signal.lisp -> signal.lisp
5386 ** host-defstruct.lisp -> defstruct.lisp
5387 ** late-target-type.lisp -> deftypes-for-target.lisp
5388 Furthermore, several other previously target-only files foo.lisp (e.g.
5389 hash-table.lisp and random.lisp) have been split into a target-and-host
5390 foo.lisp file and a target-only target-foo.lisp file, with their key type
5391 definitions in the target-and-host part, so that the cross-compiler will
5392 know more about target types.
5393 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5394 gone away. In their place are various *BACKEND-FOO* variables
5395 corresponding to the slots of the old structure.
5396 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5397 into the target SBCL has been fixed.
5398 * The chill.lisp system for loading cold code into a running SBCL
5400 * Support for the CMU CL "scavenger hook" extension has been removed.
5401 (It was undocumented and unused in the CMU CL sources that SBCL was
5402 derived from, and stale in sbcl-0.6.1.)
5403 * Various errors in the cross-compiler type system were detected
5404 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5405 (enabling various consistency checks). Many of them were fixed,
5406 but some hard problems remain, so the compiler is back to
5407 running without *TYPE-SYSTEM-INITIALIZED* for now.
5408 * As part of the cross-compiler type system cleanup, I implemented
5409 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5410 * I have started adding UNCROSS calls throughout the type system
5411 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5412 on cross-compiler input files will be able to go away, and various
5414 * CONSTANTP now returns true for quoted forms (as explicitly required
5417 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5419 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5420 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5421 (MAKE-LIST -1). In the longer term, it ought to become true
5422 that declarations are assertions even at SAFETY 1. For now, it's not
5423 quite true even at SAFETY 3, but it's at least more nearly true..
5424 (Note that this change seems to increases the size of the system by
5425 O(5%) and to decrease the speed of the compiler by 20% or more.)
5426 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5427 for the problem of printing dozens of lines of distracting information
5428 about low-level system machinery as part of the top stack frame
5429 on entry to the debugger when an undefined function was called.
5430 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5431 is not reset to COMMON-LISP-USER.
5432 * Compilation of stuff related to dyncount.lisp has been made conditional
5433 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5434 smaller. The various dyncount-related symbols have been moved into
5435 a new "SB-DYNCOUNT" package.
5436 * tty-inspect.lisp has been renamed to inspect.lisp.
5437 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5438 feature has gone away. (When we eventually port to other flavors of
5439 libc and/or Unix, we'll try to make the differences between flavors
5440 invisible at the user level.)
5441 * Various other *FEATURES* tags, and/or their associated conditionals,
5442 have been removed if obsolescent, or given better documentation, or
5443 sometimes given more-mnemonic names.
5445 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5447 * tidied up "make.sh" script
5448 * tidied up system directory structure
5449 * better "clean.sh" behavior
5450 * added doc/FOR-CMUCL-DEVELOPERS
5451 * many many small tweaks to output format, e.g. removing possibly-confusing
5452 trailing #\. character in DESCRIBE-INSTANCE
5453 * (EQUALP #\A 'A) no longer signals an error.
5454 * new hashing code, including EQUALP hashing
5455 * tidied up Lisp initialization and toplevel
5456 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5457 * command line argument processing
5458 * added POSIX-GETENV function to deal with Unix-ish environment variables
5459 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5460 terminating SBCL on EOF
5461 * non-verbose GC by default
5462 * There is no more "sbcl" shell script; the sbcl file is now the C
5463 runtime executable (just like CMU CL).
5464 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5466 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5467 symbol and package information as Lisp native symbol and package objects
5468 instead of strings naming symbols and strings naming packages. This way,
5469 whenever packages are renamed (as in warm init), debug information is
5470 transformed along with everything else.
5471 * tweaked the optimization policy declarations which control the building
5472 of SBCL itself. Now, among other things, the system no longer saves
5473 source location debugging information. (This helps two problems at once
5474 by reducing SBCL size and by keeping SBCL from trying to look for its
5475 sources -- which may not exist -- when reporting errors.)
5476 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5477 debugging and testing purposes
5478 * cleaned up printing, making the printer call PRINT-OBJECT for
5479 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5480 methods, giving nearly-ANSI behavior
5481 * converted almost all special variables to use *FOO* naming convention
5482 * deleted PARSE-TIME functionality, since it can be done portably
5483 * moved some files out of cold init into warm init
5484 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5486 * regularized formatting of source files
5487 * added an install.sh script
5488 * fixed ridiculous memory usage of cross-compiler by making
5489 compiler/alloc.lisp not try to do pooling unless it can hook
5490 itself into the GC of the cross-compilation host. Now the system
5491 builds nicely on my old laptop.
5492 * added :SB-ALLOC in target-features.lisp-expr
5493 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5494 was not implemented)
5495 * re-did condition handling and note reporting in the compiler. Notes
5496 are no longer handled by signalling conditions. Style warnings
5497 and warnings are handled more correctly and reported in such a way
5498 that it's easy to find one or the other in your output (so that you
5499 can e.g. figure out which of many problems caused COMPILE-FILE to
5501 * changed the severity of several compiler warnings from full WARNING
5502 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5503 compiler note reporting so that it doesn't use the condition system
5504 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5505 COMPILE-FILE command)
5506 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5507 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5508 no longer supported, since their implementation was deeply intertwingled
5509 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5510 * removed bogus "support" for compiler macros named (SETF FOO), and
5511 removed the compiler macro for SETF INFO (but only after making a fool
5512 of myself on the cmucl-imp mailing list by posting a bogus patch for
5513 DEFINE-COMPILER-MACRO..)
5514 * Compiled files containing forms which have side effects on the Lisp
5515 reader (such as DEFPACKAGE forms) are now handled more correctly.
5516 (Compiler queuing of top level lambdas has been suppressed by setting
5517 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5518 * deleted various currently-unused source files, e.g. gengc.lisp. They
5519 may be added back at some point e.g. when porting to other architectures,
5520 but until they are it's distracting to distribute them and to try to
5522 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5523 there were so many of them they're just distractions, and UNCROSS is
5524 known to be able to handle the current sources
5525 * moved PROFILE functionality into TRACE, so that it will be clear
5526 how the wrapping and unwrapping of functions when you profile them
5527 interacts with the wrapping and unwrapping of functions when you
5528 trace them. (Actually, the functionality isn't there yet, but at least
5529 the interface specification is there. Hopefully, the functionality will
5530 arrive with some future maintenance release.)
5531 * removed host-oops.lisp
5532 * changed signature of QUIT function to allow UNIX-CODE argument
5533 * fixed READ-SEQUENCE bug
5534 * tweaked verbose GC output so that it looks more like the progress
5535 output that ANSI specifies for functions like LOAD
5536 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5537 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob