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 it long into the future.
6 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
7 * optimization: ROUND with a single single-float or double-float argument
8 is properly inlined when possible.
9 * optimization: Slightly better code is generated for integer<->float
10 conversions and for single-float<->double-float conversions on x86-64.
11 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
12 code for 32-bit and 64-bit rotations on x86-64.
13 * bug fix: The install script changes the ownership of directories as well
14 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
15 launchpad bug lp#508485)
16 * bug fix: TRUNCATE with a single single-float or double-float argument is
17 properly inlined when possible. (launchpad bug lp#489388)
18 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
19 no longer causes a compiler error on x86 and ppc.
20 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
21 always relative to *READTABLE* rather than the passed argument.
23 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
24 * minor incompatible change: threading support is now enabled by default
26 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
28 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
29 are now caught and reported just like errors during macroexpansion.
30 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
31 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
32 * enhancement: ASDF systems can now depends on SB-QUEUE.
33 * fixes and improvements related to Unicode and external formats:
34 ** bug fix: error handling and restart usage in the ucs-2 external format
36 ** there is now an implementation of the ucs-4 external format.
37 ** the utf-16 and utf-32 external formats are supported.
38 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
39 in the environment. setenv() and unsetenv() are also provided. (reported by
40 Fare Rideau; launchpad bug lp#460455)
41 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
42 loading. This ensures sensible errors for .FASL files from other
43 implementations on case-insensitive filesystems. (reported by Willem
44 Broekema; launchpad bug lp#489417)
45 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
46 Willem Broekema; launchpad bug lp#489698).
47 * bug fix: some minor code rearrangements to reenable warning-free building
48 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
49 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
51 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
54 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
55 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
56 * improvement: support O_LARGEFILE access to files larger than 2GB on
57 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
58 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
59 definitions for methods specializing on the passed class itself.
60 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
61 definitions for methods specializing on the passed class itself, or on
63 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
64 about itself during the build (e.g. for M-? in Slime), if this flag is
65 enabled in customize-target-features.lisp. This will increase the core
66 size by about 5-6mb, though, so it's mostly interesting to SBCL
68 * new feature: various GENCGC tuning parameters have been experimentally
69 documented and exported from SB-EXT. See documentation for details.
70 * fixes and improvements related to Unicode and external formats:
71 ** the Unicode character database has been upgraded to the
72 Unicode 5.2 standard, giving names and properties to a number of new
73 characters, and providing a few extra characters with case
75 ** improvement: restarts for providing replacement input/output on coding
76 errors for fd-stream external formats.
77 ** improvement: where :<encoding> is a keyword corresponding to an
78 external format the system supports, it is now possible to specify
79 (:<encoding> :replacement <character>) as an external format which will
80 automatically substitute <character> on encoding or decoding errors for
81 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
83 ** improvement: the file streams underlying the standard streams (such as
84 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
85 which uses the replacement mechanism to handle encoding errors,
86 preventing various infinite error chains and unrecoverable I/O
88 ** minor incompatible change: the utf-8 external format now correctly
89 refuses to encode Lisp characters in the surrogate range (char-codes
90 between #xd800 and #xdfff).
91 ** fix a typo preventing conversion of strings into octet vectors
92 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
94 ** fix a bug in the octet multibyte handling of decoding errors and the
95 USE-VALUE restart. (launchpad bug lp#314939)
96 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
97 restart on fd-stream decoding errors.
98 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
99 error is near the end of file.
100 ** fix a double-error case in unibyte octet conversions, when the first
101 use of USE-VALUE is ignored.
102 ** fix bugs in handling of undefined code points in unibyte encodings.
103 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
104 streams after an UNREAD-CHAR.
105 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
106 object is allocated in a boxed region of dynamic space.
107 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
108 fork with multiple Lisp threads running is made, instead of going
109 ahead with unpredictable consequences. (reported by Leslie Polzer)
110 * bug fix: uses of slot accessors on specialized method parameters within
111 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
112 error while finalizing the class. This fix may cause classes with slot
113 accessors to be finalized later than previously. (reported by Lars Rune
114 Nøstdal; launchpad bug lp#473699)
115 * bug fix: restore buildability on the MIPS platform. (regression from
116 1.0.30.38, reported by Samium Gromoff)
117 * bug fix: inspecting closures is less likely to fail with a type error.
118 * bug fix: no timer starvation when setting the system clock back.
119 (launchpad bug lp#460283)
120 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
121 standard pprint dispatch table as specified by CLHS.
122 * bug fix: give CLISP a hint about a type declaration to enable it to build
123 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
125 * bug fix: correctly dump literal objects in defaulting forms of arglists.
126 (reported by Attila Lendvai; launchpad bug lp#310132)
127 * bug fix: distinguish in type specifiers between arrays that might be
128 complex and arrays that are definitely complex. (launchpad bug lp#309129)
129 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
130 type. (reported by Levente Mészáros; launchpad bug lp#485972)
131 * bug fix: setting the value of a symbol-macro within a method in the
132 presence of type declarations works properly again. (reported by Iban
133 Hatchondo; launchpad bug lp#485019)
135 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
136 * optimization: faster FIND and POSITION on strings of unknown element type
137 in high SPEED policies. (thanks to Karol Swietlicki)
138 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
140 * improvement: better error signalling for bogus parameter specializer names
141 in DEFMETHOD forms (reported by Pluijzer)
142 * bug fix: DELETE-FILE once again works on logical pathnames (regression
144 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
146 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
147 removes previous default initargs (reported by Lars Rune Nøstdal and
149 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
150 lambda-lists. (reported by Peter Seibel)
151 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
152 correctly when starting from an executable core without saved runtime
153 options (reported by Faré Rideau, thanks to Zach Beane)
154 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
155 an optimization note instead. (reported by Martin Cracauer)
156 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
157 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
158 new process group if it doesn't need to share stdin with the sbcl
159 process. (thanks to Leslie Polzer)
160 * bug fix: SATISFIES could be misoptimized to refer to a local function.
161 (reported by Stanislaw Halik)
163 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
164 * improvement: stack allocation is should now be possible in all nested
165 inlining cases: failure to stack allocate when equivalent code is manually
166 open coded is now considered a bug.
167 * improvements related to Unicode:
168 ** the Unicode character database has been upgraded to the
169 Unicode 5.1 standard, giving names and properties to a number of new
170 characters, and providing a few extra characters with case
172 ** the system now recognizes and produces names for Unicode Hangul
174 ** the EBCDIC-US external-format is now supported for octet operations
175 (as well as for stream operations).
176 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
177 be used to output toplevel compile-time effects into a separate .CFASL
179 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
180 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
182 * optimization: TRUNCATE on known single- and double-floats is upto 25%
184 * optimization: division of floating point numbers by constants uses
185 multiplication by reciprocal when an exact reciprocal exists.
186 * optimization: multiplication of single- and double-floats floats by
187 constant two has been optimized.
188 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
189 sufficient type information is available. (thanks to Leslie Polzer)
190 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
191 known structure objects are as efficient as defstruct generated accessors.
192 * optimization: unused vector creation can now be optimized away.
193 * improvement: ASDF systems can now depends on SB-INTROSPECT.
194 * improvement: a STYLE-WARNING is signalled when a generic function
195 clobbers an earlier FTYPE proclamation.
196 * improvement: the compiler is able to track the effective type of
197 generic function across method addition and removal even in the
198 absence of an explicit DEFGENERIC.
199 * improvement: DESCRIBE now reports on symbols naming undefined
200 but assumed or declared function as well.
201 * improvement: recompilation of systems using SB-GROVEL now works
202 (thanks to Leslie Polzer)
203 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
204 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
206 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
207 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
208 well as user defined declaration names.
209 ** VARIABLE-INFORMATION is now aware of alien variables.
210 * improvement: improved address space layout on OpenBSD (thanks to Josh
212 * improvement: pretty-printing of various Lisp forms has been improved
213 (thanks to Tobias Rittweiler)
214 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
215 unused were deleted in safe code. (reported by John Fremlin)
216 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
218 * bug fix: some out-of-line array predicates were missing (reported by
220 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
222 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
223 (thanks to Larry D'Anna)
224 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
225 as well. (reported by Josh Elsasser)
226 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
227 leading to possible attempts to delete the same file twice. See docstring
228 on DELETE-FILE for details. (reported by John Fremlin)
229 * bug fix: DELETE-FILE once again deletes the file named by the pathname
230 designator argument, rather than its truename. (reported by Luis
232 * bug fix: the low-level debugger had 32-bit assumptions and was missing
233 information about some array types. (thanks to Luis Oliveira)
234 * bug fix: moderately complex combinations of inline expansions could
235 be miscompiled if the result was declared to be dynamic extent.
236 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
237 form (+ <variable> <integer>) were miscompiled under certain
239 * bug fix: in some cases no compiler note about failure to stack allocate
240 was emitted, even if the objects were in fact heap allocated.
241 * bug fix: minor violation of "otherwise inaccessible" rule for stack
242 allocation could cause objects users might reasonably expect to
243 be heap allocated to be stack allocated.
244 * bug fix: DESCRIBE signalled an error for generic functions under
245 certain circumstances. (thanks to Leslie Polzer)
246 * bug fix: Fixed spelling of an error message.
248 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
249 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
250 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
251 of SB-THREAD:THREAD-ERROR-THREAD.
252 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
253 * new feature: docstrings for local and anonymous functions are no longer
254 discarded. (thanks to Leslie Polzer)
255 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
256 values in other threads.
257 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
258 about object allocation.
259 * optimization: division of a real float by a complex float is implemented
260 with a specialised code sequence.
261 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
262 keywords is an order of magnitude faster.
263 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
264 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
265 methods, and similarly for non-standard metaclass classes as long as there
266 are no methods additional on MAKE-INSTANCE.
267 * optimization: more efficient type-checks for FIXNUMs when the value
268 is known to be a signed word on x86 and x86-64.
269 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
270 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
272 * optimization: compiler is smarter about delegating argument type checks to
274 * optimization: several character functions are now compiled somewhat more
275 efficiently. (reported by Lynn Quam)
276 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
277 * improvement: less unsafe constant folding in floating point arithmetic,
278 especially for mixed complex/real -float operations.
279 * optimization: constant double and single floats are stored in native
280 unboxed format on x86[-64].
281 * optimization: smarter code for arithmetic operations with constant floats,
282 complex floats, or integers on x86[-64].
283 * optimization: smarter code for conjugate/multiplication of float complexes
284 and abs/negate of floats on x86-64.
285 * optimization: more efficient complex float and real float operations on
287 * improvement: complex float division is slightly more stable.
288 * improvement: DESCRIBE output has been reworked to be easier to read and
289 contains more pertinent information.
290 * improvement: failure to provide requested stack allocation compiler notes
291 provided in all cases (requested stack allocation not happening without a
292 note being issued is now considered a bug.)
293 * bug fix: SB-POSIX exports the documented types and functions
294 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
295 types. (reported by "abhi")
296 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
297 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
298 (thanks to Paul Khuong)
299 * bug fix: looping around HANDLER-CASE could silently consume stack space
300 on each iteration. (reported by "foobar")
301 * bug fix: better error signalling when calls to functions seeking elements
302 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
303 (reported by Tobias Rittweiler)
304 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
305 directory components now works as it used to. (various prolems reported by
306 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
307 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
308 (reported by Elliot Slaughter, thanks to Stas Boukarev)
309 * bug fix: bogus undefined variable warnings from fopcompiled references to
310 global variables. (thanks to Lars Rune Nøstdal)
311 * bug fix: foreign function names should now appear in backtraces on
312 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
313 * bug fix: SETF compiler macro documentation strings are not discarded
315 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
316 (thanks to Alex Plotnick)
317 * bug fix: SLEEP accepts large integer arguments, truncating them to
318 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
319 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
320 * bug fix: compiler notes for expensive slot type checks could be emitted
321 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
323 changes in sbcl-1.0.29 relative to 1.0.28:
324 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
325 https://bugs.launchpad.net/sbcl
326 Bugs can be reported directly there, or by sending email to
327 sbcl-bugs@lists.sourceforge.net
328 (no subscription required.)
329 * minor incompatible change: under weak type checking policy integer
330 types are weakened less aggressively.
331 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
332 allowed to return, which causes SBCL to quit with exit status 0. Previously
333 if the function returned with a small integer return value, that value
334 was accidentally reused as the exit status.
335 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
336 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
337 :HASH-FUNCTION argument. Refer to user manual for details.
338 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
340 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
341 microseconds since the Unix epoch on all platforms.
342 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
343 allows the compiler to safely elide boundedness checks for special
345 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
346 the symbol, prohibits both lexical and dynamic binding. This is mainly an
347 efficiency measure for threaded platforms, but also valueable in
349 * new feature: UNC pathnames are now understood by the system on Windows.
350 * optimization: the compiler uses a specialized version of FILL when the
351 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
353 * optimization: accesses to potentially non-simple arrays where element type
354 is known are 50% faster.
355 * optimization: compiler now generates faster array typechecking code.
356 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
358 * optimization: multidimensional array accesses in the absence of type
359 information regarding array rank are approximately 10% faster due to
360 open coding of ARRAY-RANK.
361 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
362 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
364 * optimization: result of call to VECTOR can now be stack allocated.
365 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
366 as long as the resulting array is one-dimensional and has a known
367 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
368 length of the list matches the known length of the vector does not
369 allocate the list as an intermediate step. Ditto for VECTOR and simple
371 * optimization: MAKE-ARRAY can now stack allocate in the presence of
372 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
373 known element type, and is known to be simple and one dimensional.
374 * improvement: SBCL now emits a compiler note where stack allocation was
375 requested but could not be provided (not in all cases, unfortunately)
376 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
377 * improvement: pretty-printing loop has been implemented properly. (thanks
378 to Tobias Rittweiler)
379 * documentation: CLOS slot typechecing policy has been documented.
380 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
381 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
382 pointer, leading to memory faults. (thanks to Bart Botta)
383 * bug fix: better floating point exception handling on x86/OpenBSD.
384 (thanks to Josh Elsasser)
385 * bug fix: exit status from QUIT when called under --script was lost
386 (reported by Hubert Kauker)
387 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
388 same implementation of FILL to initialize the array, even if a more
389 efficient one was available (reported by Stas Boukarev, thanks to
391 * bug fix: potential miscompilation of array stack allocation on x86 and
392 x86-64. (reported by Time Tossavainen)
393 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
394 result in their subforms being treated as top level forms. (reported by
396 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
397 than a machine register could leave garbage in the high bits of the
398 result register (bug 316325).
399 * bug fix: disable address space randomization Linux/x86-64 as well,
400 not just x86-64. (reported by Ken Olum)
401 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
402 generate incorrect code.
403 * bug fix: #201; type inference for CONS and ARRAY types could derive
404 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
405 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
406 could not be assigned to or bound with PROGV. (reported by Lorenz
408 * bug fix: the value of CL:- in the inspector was the previous expression
409 evaluated rather than the expression being evaluated.
410 * bug fix: constants can no longer be locally declared special.
411 * bug fix: signals delivered to threads started from foreign land (read:
412 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
413 thread by blocking all signals and resignalling.
414 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
415 from :INITFORM, if any.
417 changes in sbcl-1.0.28 relative to 1.0.27:
418 * a number of bugs in cross-compilation have been fixed, with the ultimate
419 result that building under (at least) clisp should be much more reliable.
420 * minor incompatible changes: echo-streams now propagate unread-char to the
421 underlying input stream, and no longer permit unreading more than one
423 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
424 frames, allowing for instance more reliable backtraces.
425 * improvement: the debugger REPL can now reference lexical variables
426 by name directly for code compiled with (DEBUG 3).
427 * improvement: errors from malformed declarations now have better source
428 paths associated with them. (thanks to Tobias Rittweiler)
429 * optimization: faster local calls on x86/x86-64
430 * bug fix: some error messages for out-of-bound array indexes confused the
431 index and the bound. (thanks to Stas Boukarev)
432 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
434 * bug fix: running regressions tests in shells without OSTYPE set now works.
435 (reported by Harald Hanche-Olsen)
436 * bug fix: more robust static space exhaustion signalling from
437 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
438 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
439 docstring away instead of storing it under names such as (LAMBDA (X)).
440 (reported by Leslie Polzer)
441 * bug fix: timers could go off in the wrong order, be delayed indefinitely
442 (thanks to Ole Arndt for the patch)
443 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
444 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
445 potentially-invalid effective methods in its cache.
446 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
447 instances as well (thanks to Paul Khuong)
448 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
449 SB-POSIX:WAITPID and their C equivalents.
450 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
452 changes in sbcl-1.0.27 relative to 1.0.26:
453 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
454 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
455 * improvement: the system either recovers from stack exhaustion or dies
456 properly as opposed to leaving the user uncertain of whether the handler
457 trampled on some random memory next to the stack or having to rely on
458 --lose-on-corruption (which is still a good idea to use in production
459 because stack exhaustion can happen in signal handlers which will likely
461 * bug fix: fix gc related interrupt handling bug on ppc (regression from
462 1.0.25.37, reported by Harald Hanche-Olsen)
463 * bug fix: work around signal delivery bug in darwin (regression from
464 1.0.25.44, reported by Sidney Markowitz)
465 * bug fix: fix ERROR leaking memory (reported by David Thompson)
467 changes in sbcl-1.0.26 relative to 1.0.25:
468 * incompatible change: an interruption (be it a function passed to
469 INTERRUPT-THREAD or a timer function) runs in an environment where
470 interrupts can be enabled. The interruption can use
471 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
472 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
473 potentially running out of stack. Keep in mind that in the absence
474 of WITHOUT-INTERRUPTS some potentially blocking operation such as
475 acquiring a lock can enable interrupts.
476 * incompatible change: GC-OFF and GC-ON are removed, as they were
477 always unsafe. Use WITHOUT-GCING instead.
478 * new feature: runtime option --disable-ldb
479 * new feature: runtime option --lose-on-corruption to die at the
480 slightest hint of possibly non-recoverable errors: running out of
481 memory, stack, alien stack, binding stack, encountering a memory
482 fault, etc. In the absence of --lose-on-corruption a warning is
484 * enhancement: detect binding stack exhaustion
485 * enhancement: detect alien stack exhaustion on x86/x86-64
486 * improvement: generally more stable and reliable interrupt handling
487 * improvement: there is a per thread interruption queue,
488 interruptions are executed in order of arrival
489 * improvement: a repeating timer reschedules itself when the it has
490 finished, but expiration times are spaced equally. If an
491 expiration time is in the past it will trigger after a short grace
492 period that may give a chance to other things to run.
493 * optimization: slightly faster gc on multithreaded builds
494 * optimization: faster WITHOUT-GCING
495 * bug fix: when JOIN-THREAD signals an error, do it when not holding
496 important locks so that the debugger/handler doesn't produce
497 recursive errors or deadlock.
498 * bug fix: real-time signals are not used anymore, so no more
499 hanging when the system wide real-time signal queue gets full.
500 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
502 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
503 * bug fix: fix random memory faults related to interrupts on alpha
504 * bug fix: fix random memory faults related to interrupts on sparc
505 * bug fix: fix deadlocks related to starting threads
506 * bug fix: fix deadlines on locks on futex platforms
507 * bug fix: restore errno in signal handlers
508 * bug fix: fix deadlocks related to hash tables
509 * bug fix: fix deadlocks in pcl
511 changes in sbcl-1.0.25 relative to 1.0.24:
512 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
513 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
514 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
515 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
516 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
517 better name and does not return values so stale on multiprocessor systems.
518 Also, HOLDING-MUTEX-P was added for about the only sane usage of
520 * improvement: unithread builds keep track of MUTEX-VALUE.
521 * improvement: reading from a TWO-WAY-STREAM does not touch the output
522 stream anymore making it thread safe to have a concurrent reader and
523 a writer, for instance, in a pipe.
524 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
525 arguments, making compiler-macros for SETF-functions able to inspect
526 their constant arguments.
527 * improvement: COMPILE-FILE reports times with millisecond accuracy
528 (thanks to Luis Oliveira)
529 * optimization: CHAR-CODE type derivation has been improved, making
530 TYPEP elimination on subtypes of CHARACTER work better. (reported
531 by Tobias Rittweiler, patch by Paul Khuong)
532 * bug fix: setting alien structure fields of type struct by value now
533 computes the right offset for the memory copy.
534 * bug fix: compilation problem involving inlined calls to aliens with
535 result type VOID. (reported by Ken Olum)
536 * bug fix: #235a; sequential inline expasion in different policies no
537 longer reuses the functional from the previous expansion site.
538 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
539 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
540 * bug fix: named ENUMs in multiply-referenced alien record types no longer
541 cause an implied type redefinition. Regression from 1.0.21.29.
542 * bug fix: sign-extension of small signed return values now works with C
543 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
544 * improvements to the Windows port:
545 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
546 Westfold, thanks to Rudi Schlatte)
548 changes in sbcl-1.0.24 relative to 1.0.23:
549 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
550 vector of a multidimensional SIMPLE-ARRAY.
551 * new feature: the system now signals a continuable error if standard
552 readtable modification is attempted. (thanks to Tobias Rittweiler)
553 * new feature: DIRECTORY has been extended with a non-standard keyword
554 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
555 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
556 has been robustified and documented better. (thanks to Robert Goldman)
557 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
558 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
559 * tradeoff: constant FORMAT control strings are now compiled unless
560 SPACE > SPEED (previously only when SPEED > SPACE.)
561 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
563 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
565 * bug fix: lexical type declarations are now correctly reported by
566 SB-CLTL2. (reported by Larry D'Anna)
567 * bug fix: STRING-TO-OCTETS did not handle :START properly when
568 using UTF-8 as external format. (thanks to Luis Oliveira)
569 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
570 are signalled correctly. (thanks to Stas Boukarev)
571 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
572 designator. (thanks to Tobias Rittweiler)
573 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
574 designator, and returns T instead of the function. (thanks to
576 * bug fix: direct superclasses of STANDARD-CLASS and
577 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
578 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
579 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
580 when no class with the named slot yet exists no longer causes a
581 compile-time style-warning.
582 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
583 in safe code. (reported by Didier Verna)
584 * bug fix: #430; nested structure constructors can stack allocate.
585 * bug fix: on some 64-bit platforms dynamic space size was truncated
586 to #xffff0000 bytes. (reported by Benjamin Lambert)
587 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
588 REPL unusable. (reported by Daniel Herring)
589 * bug fix: return values of READ-SEQUENCE did not take :START into
590 account on file streams, regressions since 1.0.12.22. (reported by
591 Thomas Russ, patch by Paul Khuong)
592 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
593 method specializer used to confuse permuation vector optimization.
594 * bug fix: system inserted bogus implicit type declarations for local
595 special variables in DEFMETHOD bodies.
596 * bug fix: #354; duplicated frames in backtraces due to
597 non-tail-call-optimized XEPs to functions with return type NIL
599 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
600 initializes structure object slots according to DEFSTRUCT initforms,
601 and DEFSTRUCT forms :INCLUDEind structure classes defined using
602 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
603 (reported by Bruno Haible and Stephen Wilson)
604 * bug fix: #395; fill-pointer output streams used now support
605 element-type BASE-CHAR as well.
606 * bug fix: compiler error when attempting to derive return value of
607 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
609 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
611 * bug fix: Mac OS X binaries should now be portable between Leopard
614 changes in sbcl-1.0.23 relative to 1.0.22:
615 * enhancement: when disassembling method functions, disassembly
616 for the associated fast function is also produced.
617 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
619 * optimization: printing with *PRINT-PRETTY* true is now more
620 efficient as long as the object being printed doesn't require
621 special handling by the pretty printer.
622 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
623 now interact correctly with type declarations.
624 * partial bug fix: PCL detects infinite recursion during wrapper
625 validation. (thanks to Attila Lendvai)
626 * bug fix: #426; nested function calls are inlined properly.
627 Previously if FOO was an inline function, in calls of the form
628 (FOO (FOO ...)) the outer call was not inlined.
629 * bug fix: long long arguments passed in registers to alien
630 functions on PowerPC Linux and NetBSD are now handled correctly
631 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
633 changes in sbcl-1.0.22 relative to 1.0.21:
634 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
635 for the shared object in the current directory, but passes the native
636 namestring of the designated pathname to the operation system's shared
637 object loading function as-it.
638 * minor incompatible change: --disable-debugger toplevel option now takes
639 effect before processing of initialization files and --eval or --load
641 * new feature: new commandline argument: --script, which supports
642 shebang lines. See documentation for details. (based on work by
644 * new feature: SAVE-LISP-AND-DIE can save current values of
645 --dynamic-space-size and --control-stack-size in the executable core,
646 causing it to skip normal runtime option processing. See documentation
647 for details. (thanks to Zach Beane)
648 * enhancement: inoccous calls to EVAL or generic functions dispatching
649 on subclasses of eg. STREAM no longer cause compiler notes to appear.
650 * enhancement: the system no longer resignals errors from --load and
651 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
652 associated with the original error to be lost. (thanks to Ariel
654 * enhancement: :DONT-SAVE keyword argument has been added to
655 LOAD-SHARED-OBJECT for controlling interaction with
656 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
657 the effects of an earlier LOAD-SHARED-OBJECT call.
658 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
659 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
660 provided. (reported by Cedric St-Jean)
661 * bug fix: circularity handling in the reader did not treat raw
662 structure slots correctly. (reported by Cedric St-Jean)
663 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
664 file descriptors when there were none.
665 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
666 was broken. (reporteed by Willem Broekema)
667 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
668 pathnames without a directory.
669 * bug fix: COMPILE-FILE did not warn about undefined variable
670 references at toplevel, and LOAD of the resulting fasl did
672 * bug fix: functions with non-required arguments used to end up with
673 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
674 * bug fix: redefining a function with non-required arguments didn't
675 update the system's knowledge about its call signature properly.
676 * bug fix: fixed #431; incompatible alien record type redefinitions
677 are detected and handled. (reported by Neil Haven)
678 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
679 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
681 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
682 after alien stack frames.
683 * bug fix: strings passed to mk{s,d}temp lacked null termination
685 changes in sbcl-1.0.21 relative to 1.0.20:
686 * new feature: the compiler is able to track the effective type of a
687 generic function across method addition and removal.
688 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
689 appropriately typed structure slots without locking.
690 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
691 information like those gathered by TIME using a programming-friendly
693 * new feature: TIME reports time taken even if the form performs a
694 non-local transfer of control.
695 * enhancement: reduced conservativism on GENCGC platforms: on
696 average 45% less pages pinned (measured from SBCL self build).
697 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
698 mutate constant symbols or violate declaimed type of the symbol.
699 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
700 sleeping on the semaphore in heavily contested semaphores.
701 * bug fix: semaphores and condition variables were not interrupt
703 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
704 owned by other threads anymore.
705 * bug fix: FIND on lists called KEY outside the specified
706 subsequence. (reported by budden)
707 * bug fix: LOG doesn't use single-float intermediate results when
708 given mixed integer and double-float arguments, leading to better
709 precision. (reported by Bob Felts)
710 * bug fix: LOG with base zero returned values of inconsistent type.
712 changes in sbcl-1.0.20 relative to 1.0.19:
713 * minor incompatible change: OPTIMIZE qualities
714 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
715 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
716 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
717 * documentation: some slot access efficiency guidelines have been
718 added to the user manual.
719 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
720 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
721 as ASSOC and MEMEBER.
722 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
723 to more efficient EQ-comparison versions more often.
724 * optimization: enhanced derivation of DOLIST iteration variable type
726 * optimization: constant folding of simple (LIST ...) forms as DOLIST
728 * optimization: runtime lookup of function definitions can be
729 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
730 * optimization: compiler is able to derive the return type of
731 (AREF (THE STRING X) Y) as being CHARACTER.
732 * optimization: CLRHASH on empty hash-tables no longer does pointless
733 work. (thanks to Alec Berryman)
734 * optimization: REPLACE deftransforms don't punt when :START1 or
736 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
737 no longer emits a code deletion note. (reported by Andrew
739 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
740 functions with an odd number of &OPTIONAL arguments, a &REST
741 argument, and one or more &KEY arguments at the call site.
742 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
743 arguments appeared at call sites as well.
744 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
745 READ-LINE &co can no longer read from them afterwards. (reported
747 * bug fix: fixed #427: unused local aliens no longer cause compiler
748 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
750 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
751 alien-stack leakage. (reported by Andy Hefner)
752 * bug fix: PROGV signals an error when an attempt to violate declared
753 type of a variable or bind a constant is made.
754 * bug fix: SET signals an error when an attempt to violate declared
755 type of a variable is made.
756 * bug fix: restart computation during the execution of a restart
757 test function no longer causes infinite recursion. (reported by
759 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
760 signals an error. (thanks to Pierre Mai)
761 * bug fix: EXPORT left symbol unexported in conflict situations.
762 (thanks to Michael Weber)
763 * bug fix: correctly handle name conflicts involving CL:NIL.
764 (thanks to Michael Weber)
765 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
766 conflicts arising from USEing package with conflicting symbols
767 correctly. (thanks to Michael Weber)
769 changes in sbcl-1.0.19 relative to 1.0.18:
770 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
771 warnings that go otherwise unhandled will be muffled if they are
772 of the type that's the value of this variable.
773 * optimization: stack allocation is slightly more efficient on x86
775 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
776 where a raw slot always is initialized using the initform whose
777 type is not know sufficiently well a compile-time are now compiled
778 correctly. (reported by John Morrison)
779 * bug fix: compiler no longer makes erronous assumptions in the
780 presence of non-foldable SATISFIES types.
781 * bug fix: stack analysis missed cleanups of dynamic-extent
782 arguments in non-let-converted calls to local functions.
783 * improvements to the Windows port:
784 ** adjusted address spaces for building on both Win32 and
785 Win64. (thanks for John Connors)
786 * fixed some bugs revealed by Paul Dietz' test suite:
787 ** interval arithmetic during type derivation used inexact integer
788 to single-float coercions.
789 ** arithmetic operations involving large integers and single
790 floats give the same results in compiled and interpreted code.
791 ** deriving the result type of COERCE no longer signals an error
792 if the derived type of the second argument is a MEMBER type
793 containing invalid type specifiers.
794 ** ADJOIN with constant NIL as second argument works correctly.
795 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
797 changes in sbcl-1.0.18 relative to 1.0.17:
798 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
799 profiles only the current thread.
800 * minor incompatible change: changes to SYMBOL-VALUE of constants
801 defined with DEFCONSTANT now signal an error.
802 * enhancement: SB-SPROF now has support for wallclock profiling,
803 and is also able to profile specific threads. REPORT output
804 has also additional sorting options.
805 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
807 * optimization: structure allocation has been improved
808 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
809 ** out of line constructors are ~10% faster.
810 ** inline constructors are ~15% faster.
811 ** inline constructors are capable of dynamic extent allocation
812 (generally on x86 and x86-64, in some cases on other platforms
814 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
816 * optimization: file compiler is now able to coalesce non-circular
817 lists, non-base strings, and bit-vectors. Additionally, constants
818 are never referenced through SYMBOL-VALUE at runtime.
819 * optimization: code defining methods on PRINT-OBJECT (and other
820 generic functions in the COMMON-LISP package) now loads faster.
821 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
823 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
824 fasl is now deleted. (reported by Attila Lendvai)
825 * bug fix: READ-LINE always returned NIL for the last line in files.
826 (reported by Yoshinori Tahara)
827 * bug fix: more accurate disassembly annotations of foreign function
828 calls. (thanks to Andy Hefner)
829 * bug fix: trimming non-simple strings and non-string string
830 designators when the there is nothing to trim works properly.
831 (thanks to James Knight)
832 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
833 (thanks to Travis Cross)
834 * fixed some bugs revealed by Paul Dietz' test suite:
835 ** NIL is a valid function name (regression at 1.0.13.38)
836 ** FILL on lists was missing its return value (regression at 1.0.12.27)
837 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
838 fill pointers properly (regression at 1.0.12.23)
839 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
840 displacement indices properly (regression at 1.0.12.23)
842 changes in sbcl-1.0.17 relative to 1.0.16:
843 * temporary regression: user code can no longer allocate closure
844 variable storage on stack, due to bug 419 without explicitly
845 requesting it. Please consult sbcl-devel for advice if you need to
846 use this feature in the meanwhile.
847 * new feature: runtime argument --control-stack-size can be used to
848 adjust thread default control stack size.
849 * enhancement: improved TIME output
850 ** all times are reported using the measured accuracy (milliseconds
851 for real and GC times, microseconds for everything else.)
852 ** processor cycle counts on x86 and x86-64.
853 ** interpreted forms are counted for both evaluator modes.
854 ** number of lambdas converted by the compiler is reported.
855 ** CPU percentage report (computed from real and total run time.)
856 ** more comprehensive run time reporting, using a condenced format
857 ** interperted form, lambda, and page fault counts are omitted
859 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
861 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
862 * optimization: two argument forms of LAST are upto ~10% faster
863 in normal SPEED policies.
864 * optimization: NCONC no longer needs to heap cons its &REST list
865 in normal SPEED policies.
866 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
868 * bug fix: UNION and NUNION work with :TEST-NOT once more,
869 regression since 1.0.9.1. (thanks to Eric Marsden)
870 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
871 since 1.0.15.36. (thanks to Paul Khuong)
872 * bug fix: LAST when always returned the whole list when given a bignum
873 as the second argument.
874 * bug fix: dynamic extent allocation of nested lists and vectors
875 could leak to otherwise accessible parts.
876 * bug fix: invalid optimization of heap-allocated alien variable
878 * bug fix: fasl header checking is less vulnerable to different
879 platform word lengths.
880 * bug fix: more correct assembler syntax for GNU binutils
881 2.18.50.0.4 support. (thanks to Marijn Schouten)
882 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
884 * bug fix: the fopcompiler can handle LOCALLY forms (with no
885 declarations) successfully. (reported by Attila Lendvai)
887 changes in sbcl-1.0.16 relative to 1.0.15:
888 * minor incompatible change: revert the changes to sb-posix's error
889 signaling added in 1.0.14.
890 * minor incompatible change: change PROBE-FILE back to returning
891 NIL whenever we can't get a truename, as was the case before 1.0.14.
892 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
893 inherits from ERROR instead of just CONDITION.
894 * new feature: SB-INTROSPECT can provide source locations for instances
895 as well. (thanks to Tobias Rittweiler)
896 * optimization: binding special variables now generates smaller code
897 on threaded platforms.
898 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
899 and cases where no :TEST is given but the compiler can infer that
900 the element to search is of type (OR FIXNUM (NOT NUMBER)).
901 * optimization: better LOGNOT on fixnums.
902 * optimization: modular arithmetic for a particular requested width
903 is implemented using a tagged representation unless a better
904 representation is available.
905 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
906 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
907 for wellformedness and returns a specialized vector. (reported by
908 Francois-Rene Rideau)
909 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
910 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
911 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
912 unscheduling timer at the same time as another timer fires.
913 * bug fix: don't reschedule timers for dead threads.
914 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
915 * bug fix: copying output from RUN-PROGRAM to a stream signalled
916 bogus errors if select() was interrupted.
917 * enhancement: add support for fcntl's struct flock to SB-POSIX.
919 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
920 * enhancement: cleaner backtraces for interactive interrupts, as
921 well as other cases where the interesting frames used to be
922 obscured by interrupt handling frames.
923 * enhancement: untracing a whole package using (UNTRACE "FOO") is
924 now supported, and tracing a whole package using (TRACE "FOO") now
925 traces SETF-functions as well.
926 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
927 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
928 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
929 * unreadably printed representation of hash-tables now includes
931 * bug fix: partially fixed #188: type propagation from assignments
932 is now more efficient.
933 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
934 'DOUBLE-FLOAT) are not flushable.
935 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
936 full address of the object, and none of the tag bits.
937 * bug fix: readably printing hash-tables now respects other printer
938 control variables. (reported by Cedric St-Jean)
939 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
940 keyword with MAKE-HASH-TABLE.
941 * bug fix: export SB-POSIX:MKSTEMP.
942 * bug fix: SORT was not interrupt safe.
943 * bug fix: XREF accounts for the last node of each basic-block as
945 * bug fix: MAKE-INSTANCE optimizations interacted badly with
946 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
947 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
948 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
949 create obsolete instances in the case of redefinition or
950 obsoletion of a superclass. (thanks to Andy Hefner)
951 * bug fix: Support for the Alpha architecture has been revived; it had
952 suffered somewhat from lack of maintenance since sbcl-1.0.
953 * improvements to the Windows port:
954 ** The system detects the codepage to use at startup, instead of
955 using the value from the saved core. (thanks to Kei Suzuki)
957 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
958 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
959 (see documentation for details.)
960 * revived support for OpenBSD (contributed by Josh Elsasser)
961 * partially fixed bug #108: ROOM no longer suffers from occasional
962 (AVER (SAP= CURRENT END)) failures.
963 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
964 bodies no longer cause a WARNING to be signalled. (reported by
966 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
967 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
968 the bug in TRUNCATE.) (reported by Michael Weber)
969 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
970 no samples. (reported by Andy Hefner)
971 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
972 no longer appear as (NIL ...) frames in backtraces.
973 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
974 is now actually exported from SB-EXT as documented. (reported by
976 * bug fix: sb-aclrepl now correctly understands how to inspect
977 single-floats on 64-bit platforms where single-floats are not boxed.
978 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
979 yet been finalized. (reported by Levente Meszaros)
980 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
981 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
982 SBCL-specific optimize qualities.
984 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
985 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
986 an executable in the search path, and does so in the child
987 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
988 been removed; it can be found in the CVS history, for somebody who
989 needs that search behavior (see the manual).
990 * minor incompatible change: compiler policy re. weakening type
991 checks has changed: now type checks are weakened only if SAFETY < 2
993 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
994 unparsing of directory pathnames as files. Analogously,
995 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
996 filename to parse into a directory pathname.
997 * enhancement: implicit generic function creation now signals a
998 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
999 users can bind handlers for and muffle around calls to LOAD.
1000 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1001 to be used (using the default stream external format), and allows
1002 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1003 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1004 strings and vectors whose element-type or simplicity is not fully
1005 known at compile-time.
1006 * optimization: STRING-TRIM and related functions no longer allocate
1007 a new string when no trimming needs to be performed. These functions
1008 are also faster than before when the input string has been declared
1010 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1011 * optimization: READ-LINE is significantly faster for files containing
1013 * optimization: non-open coded uses of character comparison operators
1014 (e.g. char=) no longer cons when called with more than one parameter
1015 on platforms supporting dynamic-extent allocation.
1016 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1017 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1018 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1020 * bug fix: some sequence functions elided bounds checking when
1022 * bug fix: too liberal weakening of union-type checks when SPEED >
1024 * bug fix: more bogus fixnum declarations in ROOM implementation
1027 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1028 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1029 :SYNCHRONIZED argument, which makes the hash-table safe for
1030 concurrent accesses (but not iteration.) See also:
1031 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1032 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1033 * optimization: CONCATENATE on strings is an order of magnitude faster
1034 in code compiled with (> SPEED SPACE).
1035 * optimization: SUBSEQ is ~50% faster on lists.
1036 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1037 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1038 END is smaller then START.
1039 * bug fix: SB-PROFILE will no longer report extra consing for nested
1040 calls to profiled functions.
1041 * bug fix: ROOM implementation had bogus fixnum declarations which
1042 could cause type-errors when calling ROOM on large images.
1043 * bug fix: if file compilation is aborted, the partial fasl is now
1044 deleted, and COMPILE-FILE returns NIL as the primary value.
1045 * bug fix: number of thread safety issues relating to SBCL's internal
1046 hash-table usage have been fixed.
1047 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1048 be returned from its body when the values were being returned
1049 using unknown-values return convection and the W-P-O was wrapped
1050 inside an UNWIND-PROTECT.
1051 * bug fix: sb-posix should now compile again under Windows, enabling
1052 slime to work again.
1054 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1055 * incompatible change: hash-table accessor functions are no longer
1056 automatically protected by locks. Concurrent accesses on the same hash-table
1057 from multiple threads can give inconsistent results or even corrupt the
1058 hash-table completely. Multi-threaded applications should do their own
1059 locking at the correct granularity. In the current implementation it is
1060 still safe to have multiple readers access the same table, but it's not
1061 guaranteed that this property will be maintained in future releases.
1062 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1063 and will signal an error at runtime.
1064 * enhancement: SB-THREAD package now exports a semaphore interface.
1065 * enhancement: CONS can now stack-allocate on x86 and
1066 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1068 * enhancement: nested lists can now be stack allocated on
1069 platforms providing stack allocation support.
1070 * enhancement: dynamic-extent support has been extended to support
1071 cases where there are multiple possible sources for the stack
1073 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1074 if the mutex is uncontested on Linux.
1075 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1076 as specified by the CLHS. (thanks to Tobias Rittweiler)
1077 * bug fix: NaN comparison now works on x86-64.
1078 * bug fix: CLOSE :ABORT T on a stream with pending output now
1080 * bug fix: instances of non-standard metaclasses using standard
1081 instance structure protocol sometimes missed the slot type checks
1083 * bug fix: known functions can be inlined in high-debug code.
1085 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1086 * minor incompatible change: the MSI installer on Windows no longer
1087 associates .lisp and .fasl files with the installed SBCL.
1088 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1089 on Windows. (thanks to Luis Oliviera)
1090 * new feature: SB-CLTL2 contrib module now implements
1091 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1092 * optimization: scavenging weak pointers is now more efficient,
1093 requiring O(1) instead of O(N) per weak pointer to identify
1094 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1095 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1096 method bodies using constant slot-names when the first argument is
1097 a specializer parameter for the method.
1098 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1099 names, when the class of the instance is a direct instance
1100 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1101 as slow as the constant slot-name case.)
1102 * optimization: member type construction is now O(N) instead
1104 * optimization: UNION and NUNION are now O(N+M) for large
1105 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1107 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1108 now more readable in environments like Slime which display it.
1109 (thanks to Tobias C. Rittweiler)
1110 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1111 was able to infer the correct argument type for the object on which
1112 the CAS operation was being performed.
1113 * bug fix: copy propagation interfered with parallel assignment
1114 semantics in local calls. (reported by Paul Khuong)
1115 * bug fix: the signed modular fixnum shift compiled to wrong code on
1116 x86 and x86-64. (spotted by a slight modification to some of
1119 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1120 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1121 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1122 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1124 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1125 and generic function now print the object identity for anonymous
1126 instances. (thanks to Attila Lendvai)
1127 * enhancement: as an extension to MOP, SBCL now supports SETF of
1128 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1129 (thanks to Attila Lendvai)
1130 * enhancement: sb-cover has an alternate annotation mode which puts
1131 the form annotations at the car of the form, instead of annotating
1132 it completely. The benefit of this mode is that it shows better
1133 which forms were instrumented by the compiler.
1134 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1135 by printer control variables. (reported by Dan Corkill)
1136 * bug fix: system leaked memory when delayed output was performed by
1137 the OS in smaller chunks then expected. (thanks to David Smith)
1138 * bug fix: system leaked memory when file streams were not closed
1140 * bug fix: large objects written to slow streams that were modified
1141 after the write could end up with the modified state written to
1142 the underlying file descriptor.
1143 * bug fix: multiple threads operating in parallel on the same stream
1144 could cause buffer-overflows.
1145 * bug fix: source location information is stored correctly
1146 (broken since 1.0.6). This bug would generally show up as the
1147 Slime debugger highlighting the wrong form when the sldb-show-source
1149 * bug fix: Branch forms are again annotated as branches in the sb-cover
1151 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1152 on x86-64. (reported by Gregory Vanuxem)
1153 * bug fix: EQUALP could return wrong results for structures with raw
1154 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1155 word). (reported by Vjacheslav Fyodorov)
1156 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1159 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1160 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1161 atomic compare-and-swap operations on threaded platforms.
1162 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1163 allows assigning a global minimum value to optimization qualities
1164 (overriding proclamations and declarations).
1165 * enhancement: closed over variables can be stack-allocated on x86
1167 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1169 * optimization: slot definition lookup is now O(1). This speeds up
1170 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1171 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1172 * optimization: ASSOC and MEMBER can now be open-coded for all
1173 combinations of keyword arguments when second argument is constant
1174 and SPEED >= SPACE. In other cases a specialized version is
1176 * bug fix: using obsoleted structure instances with TYPEP and
1177 generic functions now signals a sensible error.
1178 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1179 (reported by Kristoffer Kvello)
1180 * bug fix: backtrace construction is now more careful when making
1181 lisp-objects from pointers on the stack, to avoid creating bogus
1182 objects that can be seen by the GC.
1183 * bug fix: defaulting of values in contexts expecting more than 7
1184 variables now works on x86-64. (reported by Christopher Laux)
1185 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1187 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1188 as the property-list of a symbol.
1189 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1190 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1191 situations requested, are once again file-compileable. (reported
1194 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1195 * MOP improvement: support for user-defined subclasses of
1196 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1197 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1198 the expansion of DEFMETHOD, is responsible for generating a form
1199 which creates a list of specializers when evaluated. Additional
1200 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1201 debugging and introspective support.
1202 * minor incompatible change: the (unsupported) spinlock interface
1203 has changed: free spinlock now has the value NIL, and a held spinlock
1204 has the owning thread as its value.
1205 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1206 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1208 * enhancement: name of a socket-stream is now "a socket" instead of
1209 "a constant string".
1210 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1211 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1212 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1213 for generic functions. (Thanks to Tobias C. Rittweiler)
1214 * optimization: bignum printing speed has been improved by 20-40%
1215 (depending on the bignum size.)
1216 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1218 * bug fix: the cache used by the CLOS to store precomputed effective
1219 methods, slot offsets, and constant return values is now thread and
1221 * bug fix: generic function dispatch function updating is now thread
1222 and interrupt safe (in the sense that the known issues have been
1224 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1225 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1226 * bug fix: asdf systems with dependencies to the SB-POSIX or
1227 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1228 * bug fix: interrupt safety of applicable method computation has been
1231 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1232 * new contrib: sb-cover, an experimental code coverage tool, is included
1233 as a contrib module.
1234 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1235 significantly faster.
1236 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1237 produce more efficient code on x86-64 if the compiler can determine
1238 that (+ INDEX <constant>) does not require a bounds check and FOO
1239 has an element type at least 8 bits wide.
1240 * enhancement: a new, experimental synchronous timeout facility is
1241 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1242 * enhancement: when a symbol name conflict error arises, the
1243 conflicting symbols are always printed with a package prefix.
1244 (thanks to Kevin Reid)
1245 * enhancement: stepping is now once again supported on the SPARC and
1246 MIPS platforms. (It is also now more likely to work on CheneyGC
1248 * enhancement: sb-sprof can now also track and report accurate call
1250 * bug fixes: the treatment of non-standard subclasses of
1251 SB-MOP:SPECIALIZER is more correct.
1252 * incompatible change: PURIFY no longer copies the data from the
1253 dynamic space into the static and read-only spaces on platforms
1254 that use the generational garbage collector
1255 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1257 * bug fix: GC race condition occasionally resulting in crashes with
1258 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1260 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1262 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1263 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1264 * bug fix: an asynchronous interrupt could previously leave the
1265 system running with GC inhibited.
1266 * bug fix: a DECLARE form evaluated at top-level now causes an error
1267 rather than silently (or verbosely) returning NIL.
1268 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1269 result in a error being signalled due to source form lookup errors.
1270 (reported by Peter Graves)
1272 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1273 * incompatible change: removed writer methods for host-ent-name,
1274 host-ent-addresses -- changing the values did not update the DNS
1276 * minor incompatible change: changed experimental JOIN-THREAD interface
1277 * documentation: the manual now lists reader and writer methods
1278 in class slot documentation sections. (thanks to Richard M Kreuter)
1279 * documentation: unwinding from asyncronous events has been
1280 documented as unsafe.
1281 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1282 in multithreaded application code.
1283 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1284 platforms. (thanks to James Anderson for the optimization hint)
1285 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1287 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1288 variants no longer cons.
1289 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1290 their NOT- variants no longer cons.
1291 * optimization: EQUAL hash tables no longer use SXHASH for objects
1292 of all data types, but instead use an EQL hash for types for which
1293 EQUAL is the same as EQL.
1294 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1295 are significantly faster.
1296 * optimization: new STRING-OUTPUT-STREAM implementation is much
1297 faster for large outputs and conses 30% less on average.
1298 * enhancement: XREF information is now collected for references made
1299 to global variables using SYMBOL-VALUE and a constant argument.
1300 * enhancement: SIGINT now causes a specific condition
1301 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1302 * bug fix: FILE-POSITION used to signal an error in some cases where
1303 ANSI requires it to return NIL.
1304 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1305 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1306 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1308 * bug fix: bad type declaration in the CLOS implementation has
1309 been fixed. (reported by James Anderson)
1310 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1311 (thanks to Lutz Euler)
1312 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1313 required by the CLHS. (reported by Samium Gromoff)
1314 * bug fix: dead unbound variable references now signal an error.
1315 (reported by Marco Monteiro)
1316 * bug fix: / with an unused value was being deleted in safe code.
1317 (thanks to Marco Monteiro and Kevin Reid)
1318 * bug fix: number of characters that can be written onto a single
1319 line in a file is unlimited.
1320 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1321 been fixed by inhibiting interrupts for when GC is disabled.
1322 * bug fix: some interrupt safety issues with GETHASH, (SETF
1323 GETHASH), CLRHASH and REMHASH have been fixed.
1324 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1325 specifier no longer causes infinite recursion.
1326 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1327 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1328 * bug fix: an &environment argument with the correct variable information
1329 is passed to macros that are expanded during byte compilation.
1330 (reported by Samium Gromoff)
1331 * bug fix: a logic error was causing the hash function for bignums to
1332 have excessive amounts of collisions. (reported by Faré Rideau)
1333 * bug fix: modifying the contents of an array could change the return
1334 value of SXHASH on that array, which is only allowed for strings
1335 and bit vectors. (bug introduced in 0.9.16)
1336 * improvement: the x86-64/darwin port now passes all tests (except
1337 for the debugger tests) but should still be considered
1338 experimental until this is fixed.
1339 * improvement: a style-warning is signaled for CASE (etc) clauses with
1340 duplicate keys. (thanks to Kevin Reid)
1341 * improvement: macos/x86 and macos/x86-64 now use mach exception
1342 handlers for dealing with illegal instructions (for trapping and
1343 error handling) and memory protection violations (for GC).
1345 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1346 * new platform: experimental support for x86-64/darwin (MacOS).
1347 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1348 and getnameinfo sockets functions are used instead of gethostbyaddr
1349 and gethostbyname, on platforms where the newer functions are available.
1350 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1352 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1353 don't print the startup banner, but behave as if --noinform was passed
1354 as a command line argument. (thanks to Kevin Reid)
1355 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1356 * optimization: code using alien values with undeclared types is much faster.
1357 * optimization: the compiler is now able to open code SEARCH in more cases.
1358 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1359 * bug fix: using standardized COMMON-LISP special variables as loop
1360 variables no longer signals bogus package lock violations. (reported
1362 * bug fix: declaring local loop variables to be of a range-limited type
1363 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1364 (reported by Andras Simon)
1365 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1366 bugs remain on x86-64.)
1367 * bug fix: the #= and ## reader macros now interact reasonably with
1368 funcallable instances.
1369 * bug fix: type-checks for function arguments were compiled using the
1370 compiler policy settings of the wrong lexical environment (in 1.0.2
1372 * bug fix: SHADOW accepts characters as string designators, as required
1373 by the spec (thanks to Eric Marsden)
1374 * bug fix: fixed GC safety issues when foreign functions are called with
1375 non-base strings as arguments
1376 * bug fix: more consistent error output for fatal-compiler-warnings, like
1378 * bug fix: functions with proper names were showing up as NIL in
1379 backtraces (reported by Edi Weitz, regression in 1.0.2)
1381 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1382 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1383 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1384 produce more efficient code on the x86 if the compiler can determine
1385 that (+ INDEX <constant>) does not require a bounds check and FOO
1386 has an element type at least 8 bits wide.
1387 * bug fix: references to undefined variables are handled the same way
1388 in toplevel forms as in the normal compiler
1389 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1391 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1392 (thanks to Jon Buller)
1393 * improvement: faster compilation times for complex functions
1394 * improvement: added readlink support to SB-POSIX (thanks to Richard
1397 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1398 * improvement: experimental support for mach exception handling on
1399 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1401 * improvement: support for GBK external format.
1402 (thanks to Chun Tian (binghe))
1403 * improvement: the debugger now displays variables that have been closed
1404 over, in code compiled with (DEBUG 2) or higher
1405 * improvement: support for executable cores on NetBSD (thanks to
1407 * new feature: added a RESTART-FRAME debugger command
1408 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1409 be used to provide an implementation for FILE-POSITION on Gray streams
1410 (thanks to Eric Marsden)
1411 * new feature: add syslog, openlog and closelog support to SB-POSIX
1412 (thanks to Richard Kreuter)
1413 * optimization: the function call overhead in code compiled with
1414 a high DEBUG optimization setting is significantly
1415 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1416 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1417 (thanks to Tony Martinez)
1418 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1419 evaluated once (reported by Kevin Reid)
1420 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1421 works again (thanks to Kilian Sprotte)
1422 * bug fix: an error is signaled for tagbodies with duplicate tags
1423 (thanks to Stephen Wilson)
1424 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1425 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1426 stack frames from alien callbacks.
1427 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1428 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1429 65k pages (thanks to David Woodhouse)
1430 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1432 changes in sbcl-1.0.1 relative to sbcl-1.0:
1433 * new platform: FreeBSD/x86-64, including support for threading.
1434 * new feature: the compiler stores cross-referencing information
1435 about function calls (who-calls), macroexpansion (who-macroexpands)
1436 and special variables (who-binds, who-sets, who-references) for code
1437 compiled with (< SPACE 3). This information is available through the
1438 sb-introspect contrib.
1439 * new feature: users may subclass SEQUENCE, and have instances of
1440 these classes interoperate with standard Common Lisp functions if
1441 a number of methods are defined. (This feature is experimental
1442 and the interface subject to change based on feedback from SBCL
1443 users and the general community)
1444 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1445 x86/x86-64, rather than the previous fixed depth of 8
1446 * improvement: another pthread back-end of mutex "pthread-futex".
1447 * bug fix: non-ascii command-line arguments are processed correctly
1448 (thanks to Yaroslav Kavenchuk)
1449 * bug fix: non-required arguments were not passed correctly when a method
1450 defined using DEFMETHOD was called from a mop-generated method using
1451 CALL-NEXT-METHOD (reported by Pascal Costanza)
1452 * bug fix: recursion is now permitted in accessors through
1453 SLOT-UNBOUND. (reported by Pascal Costanza)
1454 * bug fix: an error was signaled at startup if the HOME environment
1455 variable was defined, but had an empty value (reported by Peter Van Eynde)
1456 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1457 signal a PROGRAM-ERROR, not a BUG.
1458 * bug fix: SB-POSIX:READDIR works when built with large file support.
1459 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1461 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1462 for better automatic indentation support. (thanks to Matt Pillsbury)
1463 * optimization: loading generic functions no longer takes O(n^2) time,
1464 proportional to the amount of methods in the generic function
1465 (reported by Todd Sabin and Jeremy Brown)
1466 * optimization: the FIND and POSITION family of sequence functions
1467 are significantly faster on arrays whose element types have been
1469 * improvements to the Windows port:
1470 ** Intermittent heap corruption problems have been fixed. (thanks
1471 to Alastair Bridgewater)
1472 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1474 ** Lisp is able to unwind foreign exception frames from alien
1475 callbacks. (thanks to Alastair Bridgewater)
1477 changes in sbcl-1.0 relative to sbcl-0.9.18:
1478 * improvement: experimental support for threading on FreeBSD/x86.
1479 (thanks to NIIMI Satoshi)
1480 * improvement: runtime option --dynamic-space-size can be used
1481 to set the size of the dynamic space reserved on startup.
1482 * improvement: floating point modes in effect are now saved in
1483 core, and restored on startup.
1484 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1485 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1486 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1487 threads are not running after *SAVE-HOOKS* have run.
1488 * improvement: writes to CLOS instance slots are type-checked in code
1489 compiled with (SAFETY 3)
1490 * improvement: floating-point exception handling on FreeBSD (thanks to
1492 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1493 (thanks to Zach Beane)
1494 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1496 * improvement: added support for the Shift-JIS external format.
1497 (contributed by NIIMI Satoshi)
1498 * improvement: callbacks are supported on Linux/PPC. (thanks to
1500 * bug fix: compiler bug triggered by a (non-standard) VALUES
1501 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1502 * bug fix: file compiler no longer confuses validated and already
1503 dumped structurres. (reported by Kaersten Poeck)
1504 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1505 fill-pointer signals a type-error as required. (thanks to
1507 * bug fix: disassemly of funcallable instances works.
1508 * bug fix: single stepping on PPC.
1509 * bug fix: fix thread-safety problems in the type system (generally
1510 manifesting as nonsensical errors like "STRING is a bad type specifier
1511 for sequences" or "The value 1 is not of type FIXNUM")
1512 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1513 (reported by Josip Gracin)
1514 * bug fix: an error is signaled for attempts to displace arrays with
1515 incompatible element types (thanks to Mario Mommer)
1516 * bug fix: more correct handling of wide characters in debug info
1517 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1518 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1519 and don't cause extra consing
1520 * optimization: MAP and MAP-INTO are significantly faster on vectors
1521 whose elements types have been declared.
1522 * Improvements to SB-SPROF:
1523 ** Support for allocation profiling
1524 ** Reduced profiling overhead, especially for long profiling runs
1525 * Improvements to the Windows port:
1526 ** floating point exceptions are now reported correctly.
1527 ** stack exhaustion detection works partially.
1528 ** more accurate GET-INTERNAL-REAL-TIME.
1529 ** better RUN-PROGRAM behaviour in case of errors in the child
1531 ** PROBE-FILE now simplifies pathnames correctly.
1532 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1533 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1534 1st 1970 (although time timezone data will be unreliable).
1535 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1537 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1538 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1539 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1541 * bug fix: two potential GC deadlocks affecting threaded builds.
1542 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1543 returns T (reported by Anton Kazennikov)
1544 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1545 with non-variable places
1546 * bug fix: remove a race condition in the setting of
1547 funcallable-instance functions, this should make threaded CLOS
1548 code more stable against memory faults.
1549 * bug fix: corruption of specials when unbinding is interrupted by an
1550 asynchronous unwind (reported by Hannu Koivisto)
1551 * improvement: the debugger will now also display local variables that
1552 are only used once, for code compiled with a DEBUG optimization quality
1555 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1556 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1557 * incompatible change: External-format support for FFI calls. The
1558 SB-ALIEN:C-STRING no longer implies an ASCII
1559 external-format. Instead the string is subject to external-format
1560 conversion. Additionally return values of type SB-ALIEN:C-STRING
1561 are by default of type (SIMPLE-ARRAY CHARACTER), not
1562 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1563 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1564 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1565 * incompatible change: SB-EXT package no longer contains the
1566 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1567 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1569 * incompatible change: the single-stepper is no longer available
1570 on Alpha, Mips and Sparc platforms.
1571 * minor incompatible change: the direct superclasses of
1572 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1573 not (STANDARD-OBJECT FUNCTION). This makes the
1574 class-precedence-lists of GENERIC-FUNCTION and
1575 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1577 * minor incompatible change: the default stream external format on
1578 non-unicode SBCL is no longer detected from the locale, but is always
1580 * new feature: Add a version of evaluator that uses an interpreter instead
1581 of the compiler. EVAL still uses the compiler by default, to switch it
1582 to use the interpreter, set the value of the variable
1583 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1584 * minor incompatible change: the single-stepper REPL has been merged
1585 with the normal debugger (see the "Stepping" heading of the debugger help
1586 for more details). The debugger command STEP will no longer switch
1587 to the single-stepper REPL.
1588 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1589 for a type now works.
1590 * bug fix: loading of default sysinit file works. (thanks to Leonid
1592 * bug fix: better detection of circularities in the file-compiler.
1593 (reported by Marco Monteiro)
1594 * bug fix: the CL pathname functions now work with files that have
1595 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1596 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1597 systems with Unix98 pty semantics.
1598 * bug fix: ASDF-INSTALL will now work with bsd tar.
1599 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1601 * bug fix: timers expiring in dead threads no longer cause a
1602 type-error (reported by Paul "Nonny Mouse").
1603 * bug fix: thanks to more lightweight single-stepper instrumentation,
1604 code compiled with (DEBUG 3) will compile and execute significantly faster,
1605 and will have more accurate type-inferencing than before
1606 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1607 whose bindings are modified
1608 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1609 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1610 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1611 CL:SOFTWARE-VERSION with proper version
1613 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1614 * feature: implemented the READER-METHOD-CLASS and
1615 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1616 as specified by AMOP.
1617 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1619 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1620 (thanks to Lutz Euler)
1621 * optimization: hashing of general arrays and vectors has been
1622 improved. (reported by Any Fingerhut)
1623 * enhancement: SB-INTROSPECT is now able to find definitions of
1624 profiled functions. (thanks to Troels Henriksen)
1625 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1626 as well, allowing compiler-macros for SETF-functions to expand.
1627 * enhancement: step-instrumentation no longer wraps known
1628 single-value functions with multiple-value context, allowing
1629 better type inference.
1630 * fixed bug #337: use of MAKE-METHOD in method combination now works
1631 even in the presence of user-defined method classes. (reported by
1632 Bruno Haible and Pascal Costanza)
1633 * fixed bug #339(c): if there are applicable methods not part of any
1634 long-form method-combination group, call INVALID-METHOD-ERROR.
1635 (reported by Bruno Haible)
1636 * fixed bug #361: the :FUNCTION initarg in the protocol for
1637 initialization of methods can now be used to override
1638 internally-produced optimized functions. (reported by Bruno
1640 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1641 system-provided lambda expression no longer cause warnings about
1642 unbound #:|pv-table| symbols.
1643 * bug fix: improved the handling of type declarations and the
1644 detection of violations for keyword arguments with non-constant
1646 * bug fix: potentially erronous calls to PATHNAME and
1647 MERGE-PATHNAMES were being flushed in some cases.
1648 (reported by Richard Kreuter)
1649 * bug fix: compiled calls to TYPEP were mishandling obsolete
1650 instances. (reported by James Bielman and Attila Lendvai)
1651 * bug fix: format strings with ~> without matching ~< no longer
1652 trigger an AVER, but signal an understandable error instead.
1653 (reported by Antonio Martinez)
1654 * bug fix: specifying an output-file without a pathname-type for
1655 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1656 of input-file instead of "fasl". (reported by Robert Dodier)
1657 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1658 (reported by James Y Knight).
1659 * bug fix: compiler-macros-function did not consider the environment
1660 argument for shadowing by local functions.
1661 * bug fix: compiler-macros expansion was inhibited by local INLINE
1663 * bug fix: inline expansions of known functions were subject to
1664 step-instrumentation in high debug policies, leading to problems
1665 with type-inference.
1666 * bug fix: compiler failed to differentiate between different CONS
1667 types in some cases.
1668 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1669 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1670 * bug fix: #368: incorrect use of expressed vs. upgraded array
1672 * bug fix: #306a: more precise unions of array types.
1673 * thread-safety improvements:
1674 ** CONDITION-WAIT could return early on Linux, if the thread was
1675 interrupted and subsequently continued with SIGCONT.
1676 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1678 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1679 * added support for the ucs-2 external format. (contributed by Ivan
1681 * minor incompatible change: pretty printing of objects of type
1682 (cons symbol) is, in the default pprint-dispatch-table, now
1683 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1685 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1686 called later in a class's lifetime, possibly as late as when the
1687 first instance of the class is created. Previously,
1688 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1689 class became finalizeable.
1690 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1691 for multibyte external-format streams. (thanks to "vbzoli")
1692 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1693 with :ALLOCATION :CLASS inherited from superclasses of the
1695 * fixed bug: anonymous classes can now be created using the :NAME
1696 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1697 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1698 * fixed bug: core-files saved with :EXECUTABLE T can again be
1699 executed when SBCL_HOME isn't set. (reported by James Knight)
1700 * fixed bug: toplevel LOCALLY forms with declarations could
1701 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1702 * fixed bug: printing from several different threads using different
1703 values of *print-case* could cause invalid output, due to
1704 some internal special variables of the printer not being bound
1705 thread-locally (reported by Max Mikhanosha)
1706 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1707 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1708 (reported by Pascal Costanza)
1709 * fixed bug: FINALIZE-INHERITANCE is called from
1710 REINITIALIZE-INSTANCE on classes when the class has previously
1711 been finalized, as required by AMOP.
1712 * minor code generation optimizations:
1713 ** better register allocation in CLOS dispatching functions
1714 ** overflow detection when coercing signed bytes to fixnums on x86-64
1715 ** is now implemented with one IMUL instruction instead of three shifts
1716 ** more efficient bit-vector access on x86 and x86-64
1717 ** more efficient access to raw structure slots on x86 and x86-64
1718 * fixed some bugs revealed by Paul Dietz' test suite:
1719 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1720 return its argument.
1722 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1723 * feature: thread support on Solaris/x86, and experimental thread support
1725 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1727 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1728 default method for SLOT-UNBOUND.
1729 * minor incompatible change: prevent the user from specializing the
1730 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1731 somewhat counter to the intent of the protocol, I (CSR) think, and
1732 additionally it just doesn't work in SBCL as currently
1733 implemented, thanks to optimizations (that are always valid for
1734 the other three SLOT-VALUEish functions, but not for the setter).
1735 * minor incompatible change: the :SB-LDB feature is now enabled by
1736 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1737 the low-level debugger.
1738 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1739 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1740 down to an SB-SYS:FD-STREAM, allowing direct communication in
1741 more cases. Temporary files and pipes are still used as a fallback
1743 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1744 on the non-reentrant C functions localtime(3) and gmtime(3).
1745 * bug fix: global optimization policy was not visible in LOCALLY and
1747 * bug fix: class objects can be used as specializers in methods.
1748 (reported by Pascal Costanza)
1749 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1750 with a type error. (reported by blitz_ on #lisp)
1751 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1752 failed with a type error. (reported by Pascal Bourguignon)
1753 * bug fix: merging pathnames against defaults with :DIRECTORY
1754 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1755 (reported by James Y Knight)
1756 * bug fix: saving large (>2GB) cores on x86-64 now works
1757 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1758 constant index and a (simple-array (signed-byte 32)) array
1759 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1760 error (patch by Robert J. Macomber)
1761 * feature: TIME now displays the amount of run-time spent in GC
1762 * bug fix: The debugger now does a better job of respecting
1763 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1764 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1765 workaround for bug 403.)
1766 * bug fix: floating point exception handling now works on FreeBSD
1767 (thanks to NIIMI Satoshi)
1768 * fixed some bugs revealed by Paul Dietz' test suite:
1769 ** MISC.641: LET-conversion were not supposed to work in late
1771 * improvements to the Win32/x86 port:
1772 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1773 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1775 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1776 * new feature: source path information is generated for macro-expansion
1777 errors for use in IDE's like Slime (thanks to Helmut Eller)
1778 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1779 * bug fix: compiler does not loop forever on an invalid type in
1781 * improvement: compilation of most CLOS applications is significantly
1783 * optimization: added a limited bytecode compiler for simple toplevel
1784 forms, speeding up compilation and FASL loading
1785 * bug fix: the statistical profiler now properly distinguishes anonymous
1788 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1789 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1790 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1791 into subclasses of the finalized class. Now user calls to
1792 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1793 system return before any subclasses are finalized.
1794 * minor incompatible change: The reader no longer ignores errors
1795 regarding non-existent packages in #+ and #- feature tests.
1796 * new feature: command line options --no-sysinit, --no-userinit to
1797 inhibit loading the corresponding init files
1798 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1799 for sending data through UDP sockets (thanks to François-René Rideau)
1800 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1801 error is signalled instead (thanks to François-René Rideau)
1802 * minor incompatible change: Error signalling behaviour of lexical
1803 operations violating package locks has changed slightly. Refer to
1804 documentation on package locks for details.
1805 * enhancement: EVAL can process IF-expressions without resorting to the
1807 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1808 constant-folded properly due to missing out-of-line functions.
1809 (reported by Mika Pihlajamäki)
1810 * bug fix: LISTEN sometimes returned T even in cases where no data was
1811 immediately available from the stream
1812 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1813 were reversed. (reported by Levente Mészáros)
1814 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1815 when given a vector displaced to an adjustable array. (reported
1817 * bug fix: derivation of float boundaries from numbers outside the
1818 appropriate float range (reported by John Wiseman)
1819 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1821 * bug fix: precomputing cache entries for generic functions with
1822 some subclasses of specializers as yet invalid does not attempt to
1823 fill a cache line with a negative offset. (reported by Levente
1825 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1826 allow condition class objects as arguments to DOCUMENTATION and
1827 (SETF DOCUMENTATION); only find and set documentation for
1828 structure names for the STRUCTURE doc-type. (suggested by Gary
1830 * improvements to the Win32/x86 port:
1831 ** (user-homedir-pathname) and default initialization file
1832 locations now know about the user's "Documents and Settings"
1833 directory (thanks to Yaroslav Kavenchuk)
1834 ** run-program is implemented (thanks to Mike Thomas)
1835 ** sockets support (thanks to Timothy Ritchey)
1836 ** better backtrace support (thanks to Alastair Bridgewater)
1837 ** sb-grovel supported
1838 ** asdf-install and sb-posix work somewhat
1839 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1840 * improvements to the Solaris/x86 port:
1841 ** works on Solaris 11/Solaris Express
1842 ** floating-point exception handling support
1843 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1844 * fixed some bugs revealed by Paul Dietz' test suite:
1845 ** REMOVE-METHOD returns its generic function argument even when
1846 the method is not one of the generic functions' methods.
1847 ** objects declared as MEMBER types can be admissible arguments to
1848 structure accessors.
1849 ** printing characters should simply be printed by the FORMAT ~:C
1851 ** compiler failure when compiling functions with hairy constant
1852 defaults for optional parameters.
1853 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1854 function, which is already optimized.
1856 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1857 * new platform: experimental support for SBCL x86/Darwin, including
1858 MacOS X 10.4.5 on Intel.
1859 * new feature: Unicode character names are now known to the system
1860 (through CHAR-NAME and NAME-CHAR).
1861 * new feature: the filesystem location of SBCL's core file is
1862 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1863 * minor incompatible change: the contrib modules SB-POSIX and
1864 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1865 this change is to make it easier to distribute
1866 location-independent binaries.
1867 * bug fix: as implied by AMOP, standardized classes no longer have
1868 slots named by external symbols of public packages. (reported by
1870 * optimization: calling functions via constant symbols -- as in
1871 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1872 via the function object as in (FUNCALL #'FOO).
1873 * optimization: on x86 and x86-64, the calling convention for the
1874 case of dealing with an unknown number of values has been altered
1875 to be friendlier to the prediction heuristics implemented,
1876 particularly with reference to CALL and RET pairing. (thanks to
1877 Alastair Bridgewater)
1878 * optimization: on x86, the code for access to thread-local symbol
1879 values and binding/unbinding of thread-local symbols is smaller.
1880 (thanks to Alastair Bridgewater)
1881 * enhancement: CONSTANTP is now able to determine constantness of
1882 more complex forms, including calls to constant-foldable standardized
1883 functions and some special forms beyond QUOTE.
1884 * fixed bug: occasional GC crashes on Solaris/x86
1885 * optimization: x86-64 supports stack allocation of results of simple
1886 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1887 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1888 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1889 (thanks to James Knight)
1890 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1891 by the standard (thanks to Stephen Compall)
1893 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1894 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1895 be used for bundling the runtime and the core file into one
1896 executable binary. This feature is not currently supported on all SBCL
1897 platforms. (thanks to James Bielman and NIIMI Satoshi)
1898 * new feature: a generational or ephemeral garbage collector is now
1899 the default on the PowerPC platform (both Linux and Darwin). The
1900 old Cheney (stop and copy) collector is a build-time option.
1901 (thanks to Cyrus Harmon, after Raymond Toy)
1902 * minor incompatible change: the method by which SBCL finds its
1903 contributed modules has changed; it no longer relies on symbolic
1904 links from an $SBCL_HOME/systems directory, but searches directly
1905 in the subdirectories of $SBCL_HOME.
1906 * enhancement: the dynamic heap size on the Linux/PPC platform is
1907 markedly larger, even using the older Cheney garbage collector.
1908 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1909 certain complicated string types. (reported by Gary King)
1910 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1911 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1912 * fixed bug: DOCUMENTATION on structures no longer signals an
1913 error if no structure type of the right name exists. (reported by
1915 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1916 applicable non-standard primary or :AROUND method on
1917 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1918 no longer cause unbound variable errors. (reported by Kevin Reid)
1919 * fixed bug: metacircle resolution in cases where methods have slots
1920 added before the slots from STANDARD-METHOD. (reported by Jean
1922 * fixed bug: the Power PC assembly code for calling into lisp
1923 sometimes computed its return address wrongly (depending on the
1924 15th bit of the address, fixed at link time). This used to
1925 manifest itself in a segmentation violation while building PCL.
1926 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1927 many others over the years)
1928 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1929 the stack pointer (treated as a signed integer) is negative.
1930 (thanks to Peter van Eynde)
1932 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1933 * new platform: experimental support for the Windows operating
1934 system has been added. (thanks to Alastair Bridgewater)
1935 * fixed several bugs in and robustified the PPC FFI (including
1936 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1937 * bug fix: allow non-simple string symbol names (reported by Paul
1939 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1941 * bug fix: saving a core corrupted callbacks on x86/x86-64
1942 * bug fix: closed a loophole in metacircularity detection and
1943 grounding in the PCL implementation of CLOS.
1944 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1945 (reported by tomppa on #lisp)
1946 * bug fix: clear the direction flag on Lisp -> C transitions, as
1947 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1948 (reported by Andrej Grozin and Hendrik Maryns)
1949 * optimization: major improvements to GC efficiency on GENCGC platforms
1950 * optimization: faster implementation of EQUAL
1951 * optimization: emit more efficient opcodes for some common
1952 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1953 * optimization: several other minor code-generation improvements on x86-64
1954 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1956 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1957 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1958 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1959 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1960 by ANSI as a generic function, and for consistency (SETF
1961 GENERIC-FUNCTION-NAME) is treated likewise.
1962 * fixed bug #233.b: make constraint propagation notice when a variable
1963 value is changed after it is referenced but before it is used
1964 * fixed bug #296: no more arbitrary behaviour from filenames with
1965 odd characters as --load arguments. (reported by Adam Warner)
1966 * fixed bug #390: :CHARACTER-SET pathname components now work as
1967 expected. (reported by Tim Daly Jr)
1968 * fixed bug #391: complicated :TYPE intersections in slot
1969 definitions no longer cause an error in PCL internals.
1970 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1971 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1972 returning the number of octets which would be written to the
1973 file-stream. (thanks to Robert J. Macomber)
1974 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1975 arguments to the internal stream functions. (thanks to David
1977 * bug fix: stack exhaustion is now handled on the x86/SunOS
1978 platform. (thanks to Daisuke Homma)
1979 * bug fix: more accurate ROOM results on GENCGC platforms
1980 * optimization: improved type inference for arithmetic-for
1981 index variables in LOOP
1982 * optimization: faster floating-point SQRT on x86-64
1983 * fixed some bugs revealed by Paul Dietz' test suite:
1984 ** DOCUMENTATION returns NIL instead of "" for method combinations
1985 that don't have a docstring
1987 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1988 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1989 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1990 therefore are not customizeable by user code (as seems to be at
1991 least permitted and maybe required by AMOP). As a consolation,
1992 however, the SBCL implementation of these functions now calls
1993 REINITIALIZE-INSTANCE as specified by AMOP.
1994 * bug fix: slot-definition documentation is propagated as per ANSI
1995 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1996 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1997 argument, as do eslotd initialization methods. (from Pascal
1998 Costanza's "Closer" project)
1999 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2000 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2002 * bug fix: it is now possible to have more than one subclass of
2003 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2004 (reported by Bruno Haible, Pascal Costanza and others)
2005 * bug fix: the dependent update protocol now works for generic
2006 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2007 and Pascal Costanza)
2008 * bug fix: condition-class instances corresponding to
2009 DEFINE-CONDITION forms are now created eagerly. (reported by
2010 Kalle Olavi Niemitalo on comp.lang.lisp)
2011 * bug fix: floating point printing is more accurate in some
2012 circumstances. (thanks to Simon Alexander)
2013 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2014 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2015 * bug fix: callbacks on OS X now preserve stack-alignment.
2016 (thanks to Cyrus Harmon)
2017 * enhancement: the x86-64 disassembler is much better at
2018 disassembling SSE instructions. (thanks to Lutz Euler)
2019 * enhancement: CHECK-TYPE on a variable now allows type-inference
2020 (thanks to Vincent Arkesteijn)
2021 * optimization: improved performance of EUC-JP external format.
2022 (thanks to NIIMI Satoshi)
2023 * optimization: performance improvements to IO on file streams of
2024 :ELEMENT-TYPE CHARACTER
2025 * optimization: much faster memory allocation on x86-64
2026 * optimization: faster garbage collections (latency and throughput)
2028 * optimization: faster bignum subtraction and division on x86 and x86-64
2029 (thanks to Lutz Euler)
2030 * optimization: more accurate type-inference for loops that use a
2031 floating point index variable or a negative step.
2033 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2034 * bug fix: add a workaround to SBCL looping infinitely at startup on
2035 Linux kernels with apparently buggy implementations of personality().
2036 (thanks to Svein Ove Aas)
2037 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2038 (thanks to David Lichteblau)
2039 * bug fix: local bindings shadow global symbol macros for
2040 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2041 * optimization: non-open coded uses of numeric comparison operators
2042 (e.g. >) no longer cons when called with more than one parameter
2043 on platforms supporting dynamic-extent allocation.
2044 * enhancement: saving cores with foreign code loaded is now supported
2045 on MIPS/Linux in addition to the previously supported platforms.
2046 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2047 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2048 * bug fix: division by zero in sb-sprof when no samples were collected
2049 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2050 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2051 (thanks to Alexander Kjeldaas)
2052 * new feature: ignoring the return values of destructive functions
2053 like NREVERSE signals a compile-time style-warning.
2054 (thanks to Kevin Reid)
2055 * new feature: the alignment of alien structure fields can be
2056 explicitly specified. (thanks to Cyrus Harmon)
2057 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2058 and dump core on SIGQUIT
2060 ** incompatible change: threads do not inherit values of specials
2061 from their parents (see manual)
2062 ** bug fix: threads stacks belonging to dead threads are freed by the
2063 next exiting thread, no need to gc to collect thread stacks anymore
2064 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2065 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2066 ** bug fix: dynamic variable and thread start related gc lossage
2067 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2069 * fixed some bugs revealed by Paul Dietz' test suite:
2070 ** SUBTYPEP is slightly more accurate on heinously complicated
2071 CONS types where some of the members have uncertain (in the
2072 NIL, NIL sense) type relationships to each other.
2074 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2075 no longer purified unless :PURIFY T is explicitly specified.
2076 ** Non-purified cores are significantly smaller than before
2078 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2079 * new feature: timers based on Zach Beane's excellent timer package
2080 * added support for the following external formats: koi8-u,
2081 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2082 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2083 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2084 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2085 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2086 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2087 * incompatible change: a threaded SBCL will no longer revert to
2088 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2089 * bug fix: interrupts are disabled until startup is complete; no
2090 more sigsegvs when receiving a signal to soon
2091 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2093 * bug fix: add a workaround for the memory randomization features in
2094 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2095 workaround will only be in effect on systems with the proc filesystem
2097 * bug fix: printing objects of type HASH-TABLE signals a
2098 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2100 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2101 have been running for over 50 days. (reported by Gilbert Baumann)
2102 * bug fix: the logic for getting names of functions gets less
2103 confused when confronded with alternate-metaclass
2104 funcallable-instances. (reported by Cyrus Harmon)
2105 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2106 consistent, even on internal alternate-metaclass objects.
2107 * bug fix: flush closure information collected by physical
2108 environment analysis prepass before the main pass. (bug reported
2110 * bug fix: compiler pack phase does not modify a hashtable, which is
2111 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2112 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2113 may be expanded. (reported by Alexander <malishev> on c.l.l)
2114 * bug fix: no more style-warnings when compiling code using LAST
2115 under high-SPEED low-SPACE settings. (reported by David Wallin
2117 * fixed some incompatibilities between SBCL's MOP and the MOP
2119 ** the METAOBJECT class is now implemented;
2120 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2121 STANDARD-OBJECT, as required;
2122 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2123 now compatible (as required by VALIDATE-SUPERCLASS); there
2124 remains a consistency requirement over the presence or absence
2125 of the FUNCTION class in the superclass list of finalized
2126 classes; see the manual for more details;
2127 ** the :AROUND method for COMPUTE-SLOTS on
2128 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2129 requested slot ordering.
2131 ** bug fix: parent thread now can be gc'ed even with a live
2133 ** bug fix: binding a special with PROGV to no value is not
2134 the same as that symbol not having been bound (thanks to
2136 ** bug fix: binding specials is thread safe (thanks to
2138 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2139 and SB-SPROF do not die with 'no handler for signal XX in
2140 interrupt_handle_now(..)' anymore
2141 ** bug fix: WITH-TIMEOUT works with multiple running threads
2142 * fixed some bugs revealed by Paul Dietz' test suite:
2143 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2144 the :method-class keyword argument.
2146 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2147 * new port: the Solaris operating system on x86 processors is now
2148 mostly supported, though some rough edges in the environment
2149 remain. (thanks to Daisuke Homma)
2150 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2151 space for its heap. (thanks to Thiemo Seufer)
2152 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2153 closures. (thanks to Thiemo Seufer)
2154 * minor incompatible change: eof selects abort in the debugger.
2155 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2156 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2158 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2159 deprecated, and will go away in a future revision of SBCL.
2160 * minor incompatible change: GC-ON and GC-OFF are no longer
2161 implemented with a counter, it does not matter how many times gc
2162 is switched on or off
2163 * bug fix: discriminating functions for generic function classes
2164 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2165 make invalid assumptions about method precedence order. (reported
2167 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2168 platforms. (thanks to Thiemo Seufer)
2169 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2170 * bug fix: correct pathname printing with printer escaping is on.
2171 (thanks to Kevin Reid)
2172 * bug fix: complex VOP definitions in "user-space" no longer trigger
2173 package locks. (reported by Zach Beane)
2174 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2175 for funcallable-instance functions, and is no different from
2177 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2178 characters in the current readtable. (reported by Nicholas Neuss)
2179 * bug fix: SUBTYPEP on various CONS types returns more a more
2180 accurate acknowledgment of its certainty.
2181 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2182 lists in some cases. This partially fixes bug 384.
2183 * flush all standard streams before prompting in the REPL and the
2185 * bug fix: signal handling and triggering gc do not conflict
2186 directly anymore, in particular a high frequency sb-sprof does
2187 not prevent gc from running
2188 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2189 approximation for timezone and DST information between the
2190 universal time epoch and the smallest negative 32-bit time_t.
2191 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2192 year 1899 so long as the encoded time is non-negative.
2193 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2194 the correct answer for non-constant rotate amounts when performing
2195 an inline 32-bit rotation.
2197 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2198 there is only one thread in the session
2199 ** bug fix: memory leak for streams created in one thread and
2200 written to in another
2201 ** bug fix: lockup when compiled with gcc4
2202 ** bug fix: race that allows the gc to be triggered when gc is
2204 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2205 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2207 ** bug fix: finished threads are gc'ed properly
2208 * fixed some bugs revealed by Paul Dietz' test suite:
2209 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2210 has arguments with a different set of applicable methods from
2211 the orignal arguments.
2212 ** The type error thrown by MAP now has a correct expected-type
2214 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2215 name a compiled function.
2216 ** Three MISC tests where a large bignum was improperly coerced to
2217 a float that couldn't represent that bignum during type
2218 derivation were fixed.
2219 ** SUBTYPEP can now handle types involving the negation of a
2220 list-form FUNCTION type.
2221 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2222 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2223 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2225 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2226 * New feature: Experimental support for bivalent streams: streams
2227 opened with :element-type :default now allow character and binary
2228 (unsigned-byte 8) I/O
2229 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2230 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2232 * bug fix: no more highly sporadic "couldn't check whether ~S is
2233 readable" when reading a stream and an interrupt hits in the middle
2234 of a select system call
2235 * compiler better recognizes complex arrays (reported by Eduardo
2237 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2238 for variables on SBCL built with linkage-tables. (reported by Luis
2240 * various error reporting improvements.
2241 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2242 (Thanks to Thiemo Seufer)
2243 * bug fix: nested reader invokations work correctly
2244 * bug fix: it is possible to have simultaneous references to foreign
2245 code and foreign data with the same name.
2247 ** added x86-64 support
2248 ** incompatible change: the threading api now works with thread
2249 objects instead of thread ids
2250 ** bug fix: threads are protected from signals and interruption when
2251 starting up or going down
2252 ** bug fix: a race where an exiting thread could lose its stack to gc
2253 ** bug fix: don't halt on infinite error in threads if possible
2254 ** fixed numerous gc deadlocks introduced in the pthread merge
2255 ** bug fix: fixed thread safety issues in read and print
2256 ** bug fix: debugger doesn't hang on session lock if interrupted at
2257 an inappropriate moment
2258 ** bug fix: run-program is now thread safe(r)
2259 ** bug fix: inner with-recursive-lock no longer releases the mutex
2260 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2261 * fixed some bugs revealed by Paul Dietz' test suite:
2262 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2263 EXPECTED-TYPE slots filled.
2264 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2266 ** MAKE-CONDITION accepts classes as type-designators.
2267 ** COMPILE may never return NIL.
2268 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2269 range before calling Unix time functions
2271 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2272 * numerous signal handling fixes to increase stability
2273 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2274 * minor incompatible change: we now correctly canonize default
2275 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2276 as per the MOP, rather than the historical (INITARG INITFUNCTION
2277 INITFORM). (reported by Bruno Haible)
2278 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2279 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2280 for more information.
2281 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2282 pathname is a directory pathname.
2283 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2284 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2286 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2287 :METACLASS argument in addition to a class name. (reported by
2288 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2289 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2290 (reported by Bruno Haible; patch from Gerd Moellmann)
2291 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2293 * bug fix: more cleanups to the floating point exception handling on
2294 x86-64 (thanks to James Knight)
2295 * bug fix: the compiler does not try to constant fold calls of
2296 COERCE and BIT-* functions when they return freshly constructed
2297 objects. (reported by Nikodemus Siivola and Paul Dietz)
2298 * optimization: improved the MIPS versions of generic (in the
2299 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2300 * optimization: direct conversion of (unsigned-byte 32) to floats on
2301 the PowerPC platform.
2302 * optimization: structure instances with raw slots now use less
2303 memory, and probably show better memory locality. (thanks to
2305 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2306 are treated as requests for stack allocation on the x86-64,
2307 Alpha-32, PPC and SPARC platforms.
2308 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2309 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2310 (thanks to Tony Martinez)
2312 ** gcing a dead thread can no longer lead to lockups
2313 ** threads block signals until they are set up properly
2314 ** errno is no longer shared by threads
2315 ** interrupt-thread restores the eflags register on x86
2316 ** fixed some lockups due to gc/thread interaction
2317 * fixed some bugs revealed by Paul Dietz' test suite:
2318 ** invalid dotted lists no longer raise a read error when
2319 *READ-SUPPRESS* is T
2320 ** signal an error if a symbol that names a declaration is used
2321 as the name of a type, or vice versa
2322 ** allow using the (declare (typespec var*)) abbreviation for
2323 (declare (type typespec var*)) with all type specifiers
2324 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2325 ** always return NIL from PPRINT-POP when OBJECT is NIL
2326 ** don't signal errors when pretty-printing malformed LABELS,
2327 FLET or MACROLET forms
2328 ** declarations in a DOLIST body are also in scope for the
2330 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2332 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2335 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2336 * fixed cross-compiler leakages that prevented building a 32-bit
2337 target with a 64-bit host compiler.
2338 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2339 opened with :IF-EXISTS :OVERWRITE.
2340 * fixed bug 281: error for an invalid qualifier in a short-form method
2341 combination method is not signalled until the faulty method is called.
2342 * bug fix: iteration variable type inferrer failed to deal with open
2343 intervals. (reported by Alan Shields)
2344 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2345 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2346 or more runtime options were provided to the sbcl binary.
2347 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2348 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2349 * optimization: there's now a fast-path for fixnum arguments in the
2350 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2351 * optimization: the code generated on x86-64 is more compact thanks
2352 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2353 * bug fix: floating-point exception handling now partly works on
2354 x86-64. (Thanks to James Knight)
2355 * improvement to the MIPS backend from Thiemo Seufer: C-style
2356 64-bit long long arguments and return values to alien functions
2358 * fixed some bugs revealed by Paul Dietz' test suite:
2359 ** the type-error signalled from WARN has a filled-in DATUM slot.
2360 ** the type-error required when a stream is not associated with
2361 a file has the stream as its datum.
2362 ** type-errors on single-floats on x86-64 no longer have
2363 :INVALID-OBJECT as the datum
2364 ** the type-errors signalled for invalid function names now have
2365 a correct expected type
2366 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2367 for structures defined with a :TYPE. Documentation strings for
2368 typed structures are no longer immediately discarded
2369 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2370 broadcast streams and synonym streams. FILE-LENGTH now also works
2371 on broadcast streams.
2373 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2374 * incompatible change: the --noprogrammer option, deprecated since
2375 version 0.7.5, has been removed. Please use the equivalent
2376 --disable-debugger option instead.
2377 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2379 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2380 inoperational for a while now) has been completely removed.
2381 * null lexical environments are now printed as #<NULL-LEXENV>,
2382 significantly reducing the amount of clutter in typical backtraces.
2383 * documentation on weak pointers, finalization, and after GC hooks
2384 has been added to the manual.
2385 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2386 as other specialized array types, is much faster. SUBSEQ and
2387 COPY-SEQ on such arrays have also been sped up.
2388 * optimization: EQL is now more efficient when at least other argument
2389 is known to be of type (OR FIXNUM (NOT NUMBER)).
2390 * fixed bug: the runtime is now less vulnerable to changes in the
2391 size of the SBCL object on OS X, and virtual memory is reserved for
2392 all spaces that need to be at a fixed address.
2393 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2394 * fixed bug: finalizers and after GC hooks that cause consing are now
2396 * fixed bug: compiler error messages and summaries are now printed to
2397 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2398 * fixed inference of the upper bound of an iteration variable.
2399 (reported by Rajat Datta).
2400 * fixed bug 211e: calling local functions with duplicated constant
2401 keyword argument no longer causes a bogus style warning about an
2403 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2404 ftype declaration to be disregarded. (reported by Dave Roberts)
2405 * fixed bug 373: caused by erronous compilation of references to alien
2406 variables in the runtime on ppc/darwin.
2407 * fixed bug 376: CONJUGATE type deriver.
2408 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2409 (reported by Baughn on #lisp)
2410 * a cross-compiler bug on non-x86 platforms has been identified and
2411 fixed. (thanks to Bruno Haible)
2412 * improvements to the MIPS runtime code for increased stability.
2413 (thanks to Thiemo Seufer)
2414 * increased the maximimum compact environment size to allow
2415 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2416 * partial workaround for bug 135: don't name the function we're
2417 calling for hairy cases of EVAL, so as not to accumulate one environment
2418 entry per call to EVAL. (reported by Kevin Reid)
2419 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2420 * optimization: type testing for non-vector arrays should be faster.
2421 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2423 * bug fix: setting 31st element of a bit vector to zero did not work
2425 * bug fix: redefining a class definition which failed due to a
2426 previous accessor / function clash now works (but see BUGS entry
2427 #380 for more problems in this area). (thanks to Zach Beane)
2428 * the long form of DEFINE-METHOD-COMBINATION disables method group
2429 checking when given a single method group with pattern *. (thanks
2431 * on x86 compiler supports stack allocation of results of simple
2432 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2433 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2434 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2435 * fixed some bugs related to Unicode integration:
2436 ** the restarts for recovering from input and output encoding
2437 errors only appear when there is in fact such an error to
2439 * fixed some bugs revealed by Paul Dietz' test suite:
2440 ** MISC.549 and similar: late transformation of unsafe type
2441 assertions into derived types caused unexpected code
2443 ** SCALE-FLOAT type deriver is less wrong.
2444 ** type derivers for EXP, LOG and similar functions compute result
2445 types for complex arguments better.
2446 ** (MISC.563) CONJUGATE type deriver works for very restricted
2448 ** out-of-line type testers for character strings are available.
2449 ** EQUAL compiler transform understands specialness of objects
2451 ** accessing double-floats stored on the stack now works on x86-64.
2452 ** debugger internals could sometimes create invalid lispobjs,
2453 resulting in GC crashes.
2454 ** MISC.548: type check weakening can convert required type into
2456 ** initialization forms for bindings are not in scope of free special
2459 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2460 * incompatible change: thread support for non-NPTL systems has
2461 been removed - locking is buggy and unreliable. A threaded
2462 SBCL build will now warn at startup and refuse to create
2463 new threads, unless futex support is detected in the kernel
2464 * incompatible change: the top level REPL now has only an ABORT
2465 restart associated with it, not TOPLEVEL and ABORT as it used to.
2466 TOP and TOPLEVEL are now available as debugger commands for
2467 returning to the top level.
2468 * incompatible change: forms evaluated in the REPL now use the
2469 global optimization policy.
2470 * incompatible change: user- and system-initialization files are
2471 no longer processed with LOAD, but by READ and EVAL; hence the
2472 global optimization policy, startup package, readtable, etc,
2474 * The .fasl file format number has been incremented because of
2475 various incompatible changes.
2476 * internal entry point details and argument counts no longer appear
2477 in backtraces unless explicitly requested by setting
2478 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2479 * built-in and standard functions no longer have names like "top
2480 level local call to FOO".
2481 * fixed bug 32: functions defined in non-null lexical environments
2482 now have more legible printed representation
2483 * fixed bug 33: functions defined in non-null lexical environemnts
2484 are now more amenable to inspection by INSPECT.
2485 * workaround for bug 354: XEPs no longer appear in backtraces unless
2486 explicitly requested.
2487 * fixed bug: receiving the signal which results from attempting to
2488 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2489 SIGBUS on other *BSDs) on architectures where the C stack is also
2490 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2491 to debugger confusion or wild instability. (reported by Cheuksan
2493 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2494 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2495 (reported by Lutz Euler)
2496 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2497 compiled code. (reported by Paul Dietz)
2498 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2499 specialized parameter to a method to something that is not TYPEP
2500 the specializer is now possible.
2501 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2502 face of package deletion.
2503 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2504 pathname. (reported by David Tolpin on c.l.l)
2505 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2506 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2507 STRING-STREAM and FILE-STREAM, respectively.
2508 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2509 than previously; in addition, its test suite is now run on build.
2510 (thanks to Luke Gorrie)
2511 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2512 * optimization: added a immediate representation for single-floats
2514 * fixed some bugs revealed by Paul Dietz' test suite:
2515 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2516 ** attempting to create a package with a colliding nickname causes
2517 correctable errors to be signalled.
2518 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2519 ** several x86-64 backend bugs related to sign-extension of immediate
2522 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2523 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2524 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2526 * fixed loading of multiply forward-referenced layouts.
2527 (thanks to Cheuksan Wang)
2528 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2529 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2530 (see COMPILE-FILE documentation for details of :PRINT option)
2531 * fixed bugs 19 and 317: fixed-format floating point printing is
2532 more accurate. This also fixes a bug reported by Adam Warner
2533 related to the ~@F format directive.
2534 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2536 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2537 dispatch table if the from-char is a dispatch macro character.
2538 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2539 by the wordsize no longer ignore the last word. (reported by Lutz
2541 * fixed bug in type checking of dynamic-extent variables. (reported
2543 * optimization: sequence traversal functions use their freedom to
2544 coerce function designators to functions.
2545 * optimization: code with many calls to CLOS methods specialized on
2546 CLOS classes has had redundant type checks removed.
2547 * optimization: added declarations to speed up operations that access
2548 the internal character database (for example STRING-UPCASE)
2549 * optimization: comparison operations between floats and sufficiently small
2550 fixnums no longer create extra rationals
2551 * fixed some bugs related to Unicode integration:
2552 ** portions of multibyte characters at the end of buffers for
2553 character-based file input are correctly transferred to the
2554 start of the buffer at the next read.
2555 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2556 passing it through to OPEN.
2557 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2558 argument given to internal calls to OPEN.
2559 ** the built-in comment readers (introduced by character sequences
2560 ";" and "#|") are more forgiving to encoding errors; they will
2561 STYLE-WARN and then attempt to resync the stream at a character
2562 boundary. (thanks to Teemu Kalvas)
2563 * fixed some bugs in the x86-64 port:
2564 ** Negative short int return values from c-calls are sign-extended
2566 ** The stack is aligned to 16-bytes for c-calls, as required by
2567 the ABI. (thanks to Cheuksan Wang)
2568 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2569 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2570 for enums. (thanks to Vincent Arkesteijn)
2571 ** Multiple small optimizations and bugfixes for floating point
2573 * fixed some bugs revealed by Paul Dietz' test suite:
2574 ** Space, Tab, Linefeed, Return and Page have the invalid
2575 secondary constituent character trait.
2576 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2578 ** WITH-INPUT-FROM-STRING should only update the index place on
2580 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2581 works more reliably.
2582 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2583 with one-dimensional arrays with fill pointers.
2584 ** TYPE-OF failed on a complex with an integer realpart and a
2586 ** compiler failure during type inference for the code of form
2587 (IF (EQL X (THE ...)) ...) (MISC.535).
2589 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2590 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2591 platform. The port supports 61-bit fixnums, large memory spaces
2592 and reloading shared object files.
2593 * enhancement: saving cores with foreign code loaded is now
2594 supported on ppc/Darwin in addition to the previously supported
2596 * enhancement: the statistical profiler now walks deeper into the
2597 call stack for more meaningful call-graphs and accrued time
2598 reports (x86/x86-64 only). It also now reports time spent in
2600 * enhancement: it is now possible to trace most individual methods
2601 of a generic function in addition to tracing the generic function
2603 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2605 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2606 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2607 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2608 produces an error. (thanks to Vincent Arkesteijn)
2609 * bug fix: NAMESTRING on pathnames with :WILD components in their
2610 directories works correctly. (thanks to Artem V. Andreev)
2611 * fixed bug 125: compiler preserves identity of closures. (reported
2613 * bug fixed: functions with &REST arguments sometimes failed with
2614 "Undefined function" when compiled with (DEBUG 3). (reported by
2616 * bug fix: overflow during compiling of setting element of a bit
2617 vector with constant index and value. (reported by Timmy Douglas)
2618 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2619 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2620 * on x86 compiler partially supports stack allocation of dynamic-extent
2622 * GO and RETURN-FROM do not check the extent of their exit points
2623 when compiled with SAFETY 0.
2624 * fixed some bugs related to Unicode integration:
2625 ** encoding and decoding errors are now much more robustly
2626 handled; it should now be possible to recover even from invalid
2627 input or output to the terminal. (thanks to Teemu Kalvas)
2628 ** provided a first cut at implementing STRING-TO-OCTETS and
2629 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2630 ** altered the SB-MD5 contributed module slightly, changing the
2631 interface just enough for it to be supportable for builds where
2632 lisp characters are not eight bits.
2633 * fixed some bugs revealed by Paul Dietz' test suite:
2634 ** the FORMATTER-generated functions for ~V[ conditionals require
2635 the correct number of arguments.
2636 ** READ-FROM-STRING returns the mandated second value when applied
2637 to displaced strings.
2638 ** the #\Rubout and #\Backspace characters are treated as invalid
2639 constituent characters by the tokenizer.
2641 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2642 * new feature: reloading changed shared object files with
2643 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2644 * new feature: references to foreign variables and functions
2645 can now be compiled and loaded before the corresponding shared
2646 object file is loaded, as long as the foreign definitions are
2647 available at runtime.
2648 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2649 supported. (thanks to Dan Debertin)
2650 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2651 just keywords. (thanks to Vincent Arkesteijn)
2652 * fixed bug #331: structure-class instances corresponding to
2653 DEFSTRUCT forms are now created eagerly.
2654 * fixed bug #345: backtraces from calls to undefined functions work
2655 on x86 as well. Related bug #61 is now also partially fixed on x86
2656 (backtraces from throws to unknown catch tags.)
2657 * bug fix: lambda-list parsing is now stricter vrt. order and number
2658 of lambda-list keywords.
2659 * bug fix: as specified by AMOP, an error is signalled if a
2660 class-option appears multiple times in a DEFCLASS form. (reported
2662 * bug fix: RANDOM can be compiled when the compiler derives the type
2663 of its numeric argument as a disjoint set of small integers.
2664 (reported by Paul Dietz)
2665 * bug fix: starting a core saved with shared objects loaded when
2666 those objects are not available no longer causes threaded SBCL to
2667 hang. (reported by Sean Ross)
2668 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2670 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2671 argument, which must always be NIL. (reported by Kalle Niemitalo)
2672 * bug fix: printing 1.0d+23 no longer results in an error.
2673 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2674 * bug fix: structure slot setters preserve evaluation order. (thanks
2676 * fixed some bugs related to Unicode integration:
2677 ** RUN-PROGRAM can allow its child to take input from a Lisp
2678 stream. (reported by Stefan Scholl)
2679 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2680 locales. (reported by Ken Causey)
2681 * fixed some bugs revealed by Paul Dietz' test suite:
2682 ** INCF, DECF and REMF evaluate their place form as specified in
2684 ** FORMATTER expands ~{ ~} iteration directives with V or #
2685 parameters correctly.
2686 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2687 consequent uses no arguments correctly.
2688 ** the system has a partial understanding of the (COMPLEX RATIO)
2690 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2693 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2694 * new feature: a build-time option (controlled by the :SB-UNICODE
2695 keyword feature, enabled by default) for building the system with
2696 support for the entire 21-bit character space defined by the
2698 * new feature: the system now has rudimentary external-format
2699 support; the primary user-visible change at this time is that
2700 characters with the high bit set (such as lower-case-e-acute) will
2701 print correctly to a terminal in a UTF-8 environment.
2702 * minor incompatible change: BASE-CHAR no longer names a class;
2703 however, CHARACTER continues to do so, as required by ANSI.
2704 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2705 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2706 has been moved to the SB-EXT package (temporarily re-exported from
2708 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2709 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2711 * fixed bug #351: better error-handlind and reporting for malformed
2713 * fixed bug #350: bignum-printing is now more memory-efficient,
2714 allowing printing of very large bignums, eg. (expt 2 10000000).
2715 (reported by Bruno Haible)
2716 * fixed bug #302: better primitive-type selection for intersection
2718 * fixed bug #308: non-graphic characters now all have names, as
2719 required. (reported by Bruno Haible)
2720 * bug fix: redefining a class with different superclasses now correctly
2721 removes it from the direct-subclasses of its previous superclasses.
2722 (reported by David Morse)
2723 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2724 new value now works. (reported by Bruno Haible)
2725 * bug fix: correct canonicalization of multiple non-standard slot
2726 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2727 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2728 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2729 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2730 now exists, an signals an error.
2731 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2732 during macroexpansion for non-iteration variables as well. (reported
2733 by Bruno Haible for CMUCL)
2734 * bug fix: Cyclic structures and unprintable objects in compiler
2735 messages no longer cause errors. (reported by Bruno Haible)
2736 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2737 and READ-FROM-STRING all now return a primary value of NIL if
2738 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2739 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2740 (reported by Bruno Haible for CMUCL)
2741 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2742 do not designate a condition. (reported by Bruno Haible for
2744 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2745 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2746 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2747 permitting resolution in favour of any of the conflicting symbols.
2748 (reported by Bruno Haible for CMUCL)
2749 * bug fix: EQUAL compiler optimizations is less aggressive on
2750 strings which can potentially compare true despite having distinct
2751 specialized array element types.
2752 * bug fix: unit enumerations can be defined without dividing by
2753 zero. (thanks to Vincent Arkesteijn)
2754 * FORMAT compile-time argument count checking has been enhanced.
2755 (report from Bruno Haible for CMUCL)
2756 * a partial workaround for the bug 262: the compiler does not try to
2757 inline-expand a local function doing RETURN-FROM from a deleted
2758 BLOCK. (thanks to Peter Denno for the bug report and to David
2759 Wragg for the simple test case)
2760 * fixed some bugs revealed by Paul Dietz' test suite:
2761 ** RENAME-PACKAGE allows all package designators as new package
2763 ** constraint propagation and lambda variable substitution are
2764 more cautious in dealing with partially deleted code.
2765 ** compiler sometimes lost reoptimization passes.
2766 ** CERROR, given a condition as condition designator, passes its
2767 remaining arguments to the continue format control without
2769 ** Case-altering FORMAT directives work correctly on non-ASCII
2771 ** The REAL type specifier handles bounds outside the floating
2772 point ranges without signalling FLOATING-POINT-OVERFLOW.
2773 ** Functions with IR1-transformations can create intercomponent
2774 references to global functions.
2775 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2777 ** FORMAT ~R treats a nil value for its first parameter correctly.
2779 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2780 * enhancement: saving cores with foreign code loaded is now
2781 supported on x86/NetBSD and sparc/Linux in addition to the previously
2782 supported platforms.
2783 * bug fix: on some platforms repeated installations caused multiple
2784 copies of HTML documentation to be installed -- should not happen
2785 any more. (reported by Stefan Scholl)
2786 * bug fix: parsing self-recursive alien record types multiple times
2787 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2788 original patch by Helmut Eller for CMUCL)
2789 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2790 (thanks to Richard Kreuter)
2791 * bug fix: defining classes whose accessors are methods on existing
2792 generic functions in other (locked) packages no longer signals
2793 bogus package lock violations. (reported by François-René Rideau)
2794 * bug fix: special variables as DEFMETHOD parameters no longer have
2795 associated bogus type declarations. (reported by David Wragg and
2797 * bug fix: read-write consistency on streams of element-type
2798 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2799 * bug fix: redefiniton of the only method of a generic function with
2800 no DEFGENERIC no longer emits a full WARNING. In addition,
2801 redefinition of generic functions with no DEFGENERIC to an
2802 incompatible lambda list now signals an error. (thanks to Zach
2804 * bug fix: DEFGENERIC now works even when there's a function of the
2805 same name in an enclosing lexical environment. (thanks to Zach
2807 * fixed compiler failure, caused by instrumenting code during
2808 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2809 * optimization: added loop analysis and improved register allocation
2810 * fixed some bugs revealed by Paul Dietz' test suite:
2811 ** POSITION on displaced vectors with non-zero displacement
2812 returns the right answer.
2813 ** (SIMPLE-STRING) is a valid type specifier for sequence
2815 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2817 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2818 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2820 ** The justification version of the FORMAT ~< directive treats
2821 non-zero minpad parameter correctly.
2823 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2824 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2825 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2826 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2827 the supported interface.
2828 * new feature: Single-stepping of code compiled with DEBUG 2 or
2829 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2830 * new feature: saving cores with foreign code loaded is now
2831 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2832 Timothy Moore's work for CMUCL)
2833 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2834 parameters to * instead of NIL if no initform is supplied.
2835 (reported by Johan Bockgaard)
2836 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2837 correctly when FUNCALL appears as the car of the form. Note:
2838 despite this FUNCALL forms are not currently subject to
2839 compiler-macro expansion. (port of Raymond Toy's fix for the
2840 same from CMUCL, reported by Johan Bockgaard)
2841 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2842 (thanks for Teemu Kalvas)
2843 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2844 case instead of terminating the iteration (thanks for Julian
2845 Squires, Sean Champ and Raymond Toy)
2846 * bug fix: incorrect expansion of defgeneric that caused a style
2847 warning. (thanks for Zach Beane)
2848 * bug fix: slot accessor effective method computation works properly
2849 for classes with multiple non-standard applicable methods on
2850 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2851 * on x86 compiler supports stack allocation of results of LIST and
2852 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2853 CMUCL implementation by Gerd Moellmann)
2854 * fixed some bugs revealed by Paul Dietz' test suite:
2855 ** FORMAT strings with both the ~<~:;~> form of the justification
2856 directive and pretty-printing directives cause an error.
2858 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2859 * incompatible change: the internal functions
2860 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2861 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2862 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2863 instead of the old functions.
2864 * new feature: on platforms where "dladdr" is available foreign
2865 function names now appear in backtraces. (based on Helmut Eller's
2867 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2868 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2870 * documentation: ASDF manual is now distributed with SBCL.
2871 * bug fix: SBCL can now load its contributed modules with REQUIRE
2872 even if the system-provided entries have been removed from
2873 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2875 * bug fix: backtraces involving undefined functions or assembly
2876 routines are more informative. (thanks to Brian Downing)
2877 * bug fix: mutually referent alien structures now work correctly.
2878 (reported by Rick Taube)
2879 * bug fix: structures defined by WITH-ALIEN can be referred to
2880 within other definitions in the same WITH-ALIEN.
2881 * bug fix: division operators (MOD, TRUNCATE and the like) with
2882 constant zero divisors and integer dividends no longer generate
2884 * bug fix: provide default methods for INPUT-STREAM-P and
2885 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2886 * bug fix: improve the detection and resolution of MOP metacycles
2887 (where effective method computation depends on the generic function
2888 having its effective method computed). (reported by Bruno Haible)
2889 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2890 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2891 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2892 * bug fix: pathnames with relative directory components can be
2893 represented relative to default pathnames.
2894 * optimization: in taking the GCD of bignums, reduce the two bignums
2895 to approximately the same size (using Euclid's algorithm) before
2896 applying the more sophisticated binary GCD. (thanks to Juho
2898 * optimization: COUNT on bitvectors now operates word-at-a-time.
2899 * optimization: ASH with a positive, but not necessarily constant,
2900 (leftwards) shift, when in a modular context, is compiled to a
2902 * fixed some bugs revealed by Paul Dietz' test suite:
2903 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2904 if the corresponding argument is NIL.
2905 ** FORMAT directives accepting a minpad parameter treat negative
2907 ** literal commas as character parameters to FORMAT directives are
2909 ** literal spaces directly after ~<Newline> directives within a
2910 format-logical-block (~:< ~@:>) do not induce :FILL-style
2911 conditional newlines.
2912 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2913 as specified: it no longer includes conditional newlines).
2914 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2916 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2917 :PER-LINE-PREFIX argument does not evaluate to a string.
2919 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2920 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2921 the manual for details; for now, package locks can be disabled by
2922 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2923 if no major problems are found then it is likely that they will be
2924 compiled in unconditionally.
2925 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2926 unsupported operators on all platforms. To load a shared library
2927 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2928 object file, link it into a shared library outside of SBCL and
2929 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2931 * bug workaround: ROOM T and the GC were not working together
2932 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2933 reporting facility aren't preserved. That reporting has been
2934 disabled, so now until and unless someone figures out how to make it
2935 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2936 * minor incompatible change: as threatened around sbcl-0.8.0, the
2937 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2938 The symbols are also exported from SB-PCL for backwards
2939 compatibility, but more so than before SB-PCL should be treated as
2940 an implementation-internal package.
2941 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2943 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2944 It is known as of this release not to work on the Alpha, however.
2945 * fixed bug #167: errors signalled due to illegal syntax in method
2946 bodies are now more legible.
2947 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2948 designators and can hence be used with TYPEP.
2949 * fixed bug #333: CHECK-TYPE now ensures that the type error
2950 signalled, if any, has the right object to be accessed by
2951 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2952 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2953 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2955 * fixed bug #334: programmatic addition of slots using specialized
2956 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2957 and :ALLOCATION :CLASS slots.
2958 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2959 float exponents. (rereported by Peter Seibel)
2960 * fixed a bug: #\Space (and other whitespace characters) are no
2961 longer considered to be macro characters in standard syntax by
2962 GET-MACRO-CHARACTER.
2963 * fixed bug: initialization of condition class metaobjects no longer
2964 causes an instance of the condition to be created. (reported by
2966 * fixed bug: it is now possible to have slots such that
2967 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2968 description is neither :INSTANCE nor :CLASS.
2969 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2970 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2971 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2972 non-standard SLOT-DEFINITION-ALLOCATION values.
2973 * fixed bugs: various race conditions handling exiting threads.
2974 CL-PPCRE's thread torture test now passes.
2975 * fixed arguably-a-bug: GC time proportional to number of threads in
2976 system even when most of them are idle
2977 * optimization: improved performance of BIT and SBIT on bit-vectors.
2978 * .fasl file incompatibility: The fasl file version number has
2979 been incremented because of changes associated with package locks.
2981 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2982 * minor incompatible change: the system no longer provides
2983 optimization hints (conditions which are TYPEP
2984 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2985 mode; these hints are still emitted when higher SPEED optimization
2987 * new contrib module: a sampling profiler (profiling by statistical
2988 sampling, rather than by instrumenting functions) is available as
2989 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2990 * the behaviour of the standard function ED is now customizeable by
2991 third parties through a hook variable: see ED's documentation
2992 string for information on the protocol.
2993 * the compiler no longer emits efficiency notes for (FUNCALL X)
2994 when the type of X is uncertain under default optimization
2996 * fixed bug 276: mutating a binding of a specialized parameter to a
2997 method to something that is not TYPEP the specializer is now
2999 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3000 exhibit the required behaviour on the x86 platform. (thanks to
3001 Peter van Eynde, Eric Marsden and Bruno Haible)
3002 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3003 even for difficult arguments. (reported by Peter Graves)
3004 * fixed bug 141a: the backquote printer now descends quoted
3006 * fixed another bug in backquote printing: no more destructive
3007 modification of the form's list structure. (reported by Brian
3009 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3010 move between its address being taken and the call to
3011 interrupt_thread, fixing a crashing race condition.
3012 * the SB-POSIX contrib implementation has been adjusted so that it
3013 no longer exhibits ridiculously poor performance when constructing
3014 instances corresponding to C structs.
3016 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3017 * minor incompatible change: the sb-grovel contrib now treats C
3018 structures as alien (in the sense of SB-ALIEN) objects rather than
3019 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3020 has implications for memory management of client code
3021 (sb-grovel-returned objects must now be manually managed) and for
3022 type safety (alien objects now have full types).
3023 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3024 used to control emission of compiler diagnostics, rather than the
3025 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3026 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3027 quality should be considered deprecated.
3028 * install.sh now installs the user manual as well
3029 * (not quite a new documentable feature, but worth considering in
3030 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3031 beginnings of a semantically meaningful condition hierarchy is
3032 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3034 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3035 designator as the defaults argument.
3036 * fixed bug: Displaced arrays whose displaced-to array has become
3037 too small now cause ARRAY-DIMENSION to signal an error, providing
3038 for safer bounds-checking. (reported by Bruno Haible)
3039 * fixed bug: DEFCLASS slot definitions with identical :READER and
3040 :WRITER names now signal a reasonable error. (reported by Thomas
3042 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3044 * fixed bug: Invalid slot specification errors now print correctly.
3045 (thanks to Zach Beane)
3046 * fixed bug 320: Shared to local slot value transfers in class
3047 redefinitions now happen corrently from superclasses as
3048 well. (reported by Bruno Haible)
3049 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3051 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3052 improper lists correctly. (reported by Bruno Haible)
3053 * fixed bug 313: source-transform for <fun-name> was erroneously
3054 applied to a call of a value of a variable with name <fun-name>.
3055 (reported by Antonio Menezes Leitao)
3056 * fixed bug 307: The obsolete instance protocol ensures that
3057 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3058 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3059 remove dead unknown-values globs from the middle of the stack.
3060 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3061 easier to resume long computations after using *BREAK-ON-SIGNALS*
3062 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3063 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3064 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3065 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3066 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3067 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3069 * fixed a (fairly theoretical) bug in string printing: if
3070 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3071 does not have array-element-type equal to the most general string
3073 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3074 function name. (thanks to Nikodemus Siivola)
3075 * fixed bug: compile-time format string checker failed on
3076 non-closed ~{. (reported by Thomas F Burdick)
3077 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3078 don't warn on legal loop code involving more than one aggregate
3079 boolean. (thanks to Nikodemus Siivola)
3080 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3081 in keyword position to MAKE-PACKAGE was not being reported as
3083 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3084 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3086 * fixed bugs 280 and 312: the checking for multiple definitions in a
3087 file is less likely to become confused by uses of inline
3089 * fixed bug: the #S reader macro performs the keyword coercion
3090 specified for slot names. (reported by Kalle Niemitalo)
3091 * fixed bug: lambda lists may contain symbols whose names start with
3092 & but are not lambda-list-keywords; their occurrence triggers a
3094 * fixed bug 321: define-method-combination argument lambda lists do
3095 not cause invalid code to be generated when &optional or &aux
3096 variables have default values. (reported by Bruno Haible)
3097 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3098 have CLOS classes; this appears also to have fixed reported
3099 instability in stack exhaustion detection.
3100 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3101 MUFFLE-WARNING when no associated restart is present is now
3103 * optimization: rearranged the expansion of various defining macros
3104 so that each expands into only one top-level form in a
3105 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3107 * optimization: used a previously little-used slot in symbols to
3108 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3110 * fixed some bugs revealed by Paul Dietz' test suite:
3111 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3113 ** Fixed an optimization bug related to inheritance of initforms
3114 from local to shared slots.
3115 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3116 ** CAST optimizer forgot to flush argument derived type.
3117 ** print/read consistency on floats is now orders of magnitude
3118 more likely. (thanks also to Bruno Haible for a similar report
3120 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3121 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3122 for objects of type REAL. Make it so.
3123 ** SXHASH is specified (infelicitously) to respect similarity,
3124 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3125 it so. (thanks to Markus Ziegler)
3126 ** on the Alpha, the compiler succeeds in compiling functions
3127 returning a known number of arguments greater than 63.
3128 ** fixed handling of invalid NIL arguments in keyword position
3130 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3132 ** provided a readably-printable representation for RANDOM-STATE
3134 ** ensured that pathnames, where they have a namestring, always
3135 print using #P"..." syntax.
3137 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3138 * Support for the forthcoming 2.0 version of the NetBSD kernel
3139 running on x86 hardware has been added. (thanks to Perry
3140 E. Metzger most immediately, and others for their past work)
3141 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3142 current release version; SBCL's OpenBSD support had been broken
3143 since about the time of OpenBSD's switch to ELF binary format.)
3144 * [placeholder for DX summary]
3145 ** user code with &REST lists declared dynamic-extent, under high
3146 speed or space and low safety and debug optimization policy.
3147 * The manual has been converted to Texinfo format and the debugger
3148 chapter from the cmucl manual has been added.
3149 * A facility has been added to extract documentation strings from
3150 sbcl and store them as Texinfo-formatted snippets for inclusion in
3151 the manual (via Texinfo's @include directive)
3152 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3153 the test case to Dave Roberts)
3154 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3155 pointers. (reported by Sean Ross)
3156 * bug fix: PROFILE output is printed nicely even for large numerical
3157 values. (thanks to Zach Beane)
3158 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3159 greater than 32 handle EOF correctly.
3160 * bug fix: on X86 an immediate argument of the IMUL instruction is
3161 correctly printed in disassembly. (thanks to Lutz Euler)
3162 * bug fix: class slots in redefined classes preserve their old
3163 values. (thanks to Bruno Haible and Nikodemus Siivola)
3164 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3165 succeeds. (reported by Marco Baringer)
3166 * fixed some bugs revealed by Paul Dietz' test suite:
3167 ** READ-SEQUENCE now works on ECHO-STREAMs.
3168 ** RATIONALIZE works more according to its specification. (thanks
3171 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3172 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3173 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3174 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3175 should matter to you only if you rebind the printer control
3176 variables and then find you want different bindings in the
3177 debugger than in the ordinary execution of your program.)
3178 * The runtime build system has been tweaked to support building
3179 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3180 assembler and linker. (thanks to Nikodemus Siivola)
3181 * Unbound, undefined, undeclared variables now trigger full
3182 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3183 more often programmer error than deliberate exploitation of undefined
3185 * optimization: the hash algorithm for strings has changed to one
3186 that is less vulnerable to spurious collisions. (thanks to Juho
3188 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3189 needless bounds checking. (thanks to Juho Snellman)
3190 * optimization: implemented multiplication as a modular
3191 (UNSIGNED-BYTE 32) operation on the PPC backend.
3192 * fixed some bugs revealed by Paul Dietz' test suite:
3193 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3195 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3196 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3197 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3199 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3201 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3203 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3204 their output stream on EOF from read.
3205 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3206 have been read to end-of-file.
3207 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3209 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3210 description of determination of which consecutive characters
3212 ** Printing the "Space" character with escaping on now yields "#\\ ",
3213 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3214 ** Reading floating-point numbers with *READ-BASE* set to a number
3215 less than 10 works correctly.
3216 ** Reading floating-point numbers with *READ-BASE* set to a number
3217 more than 10 works correctly.
3218 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3219 the readtable currently in effect.
3221 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3222 * minor incompatible change: parsing of namestrings on a physical
3223 (Unix) host has changed; numbers after the final #\. in a
3224 namestring are no longer interpreted as a version field. This is
3225 intented to be largely invisible to the user, except that the
3226 meaning of the namestring "*.*.*" has changed: it now refers to a
3227 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3228 should usually be replaced by
3229 (make-pathname :name :wild :type :wild :version :wild)
3230 with the added benefit that this is more likely to be portable.
3231 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3232 option to OPEN now signals an error if the file being opened
3233 exists; this may have an impact on existing code.
3234 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3235 signals received, on the PowerPC platforms (both Linux and
3236 Darwin). (thanks to Pierre Mai for pointing out the location of
3238 * several fixes on OS X: The system now builds and runs cleanly on
3239 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3240 (thanks to Brian Mastenbrook)
3241 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3242 second-resolution: integer multiples of 1/3600 between -24 and 24.
3243 (thanks to Vincent Arkesteijn)
3244 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3245 type when called with 1 argument; PEEK-CHAR checked type of
3246 PEEK-TYPE only after having read first character from a
3247 stream. (reported by Peter Graves)
3248 * bug fix: the garbage collector now has much better locality
3249 behaviour, and in particular no longer treats all memory as being
3250 exhausted when many small objects point to each other in a deeply
3252 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3253 recognized as being TYPEP their class.
3254 * bug fix: the PUSHNEW documentation string has been corrected.
3255 (thanks to Vincent Arkesteijn)
3256 * bug fix: defaulting of the value for the last of an atypically
3257 large number of multiple values being bound was not being
3258 performed correctly on the Alpha or PPC platforms
3259 * optimization: implemented multiplication as a modular
3260 (UNSIGNED-BYTE 32) operation on the x86 backend.
3261 * optimization: SEARCH on simple-base-strings can now be open-coded.
3262 (see also contrib/compiler-extras.lisp for inspiration for
3263 teaching the compiler about the Boyer-Moore algorithm).
3264 * value, returned by MAX (and MIN) called with several EQUALP, but
3265 not EQL, arguments now does not depend on compiler settings.
3266 * fixed some bugs revealed by Paul Dietz' test suite:
3267 ** in stack analysis liveness information is propagated from
3268 non-local entry points.
3269 ** pathwise CAST removing failed when the CAST node did not start
3271 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3272 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3274 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3275 host is already defined.
3276 ** RENAME-FILE works on streams instead of signalling an internal
3278 ** PEEK-CHAR uses the current readtable when determining whether
3279 or not a character is whitespace.
3280 ** MERGE-PATHNAMES handles the case when the pathname does not
3281 specify a name while the default-pathname specifies a version.
3282 ** Pathnames now stand a better chance of respecting print/read
3284 ** Attempting to use standardized file system operators with a
3285 pathname with invalid :DIRECTORY components signals a
3287 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3289 ** DIRECTORY on logical pathnames is more correct.
3290 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3291 signal a TYPE-ERROR if their argument is not a stream.
3292 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3293 designator argument does not designate a stream.
3294 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3295 examining the synonym.
3296 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3298 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3299 element-type larger than ([UN]SIGNED-BYTE 32).
3301 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3302 * When built with the :SB-FUTEX feature, threaded builds now take
3303 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3304 for faster/more reliable mutex and condition variable support.
3305 * Incompatible change (but one you probably shouldn't have been using
3306 anyway): the interface and code for arbitrating between multiple
3307 threads in the same user session has been redesigned.
3308 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3309 error when called without an explicit environment argument.
3310 (thanks to Nikodemus Siivola)
3311 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3312 confused about their position. (thanks to Adam Warner and Gerd
3314 * bug fix: Pretty printing backquoted forms with unquotations in the
3315 argument list position of various code constructs such as LAMBDA
3316 now works correctly. (reported by Paul Dietz)
3317 * bug fix: Pretty printing unquotations no longer loses all
3318 stream position information.
3319 * optimization: performance of string output streams is now less
3320 poor for multiple small sequence writes.
3321 * optimization: performance of CSUBTYPEP in the presence of complex
3322 expressions involving CONS and NOT many times has been improved.
3323 (reported by Paul Dietz)
3324 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3326 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3327 streams for the REPL, for the debugger, and so on. (thanks to
3329 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3330 * fixed some bugs revealed by Paul Dietz' test suite:
3331 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3332 is ignored if it is too small, rather than propagating through
3333 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3334 ** extremely complex negations of CONS types were not being
3335 sufficiently canonicalized, leading to inconsistencies in
3337 ** VALUES tranformer lost derived type.
3339 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3340 * fixed a bootstrapping bug: the build process no longer assumes
3341 that the various BOOLE-related constants have the same value in
3342 host and target lisps. (noted by Paul Dietz' test suite on an
3343 SBCL binary built from CLISP)
3344 * The system can now be dynamically linked on the MIPS platform,
3345 which enables dynamic loading of foreign code from Lisp. (thanks
3346 to Ralf Baechle for discussions on the MIPS ABI)
3347 * The system now records debugging information for its own source
3348 files in a filesystem-position-independent manner, relative to
3349 the "SYS" logical host.
3350 * fixed a compiler bug: MV-LET convertion did not check references
3351 to the "max args" entry point. (reported by Brian Downing)
3352 * tweaked disassembly notes to be less confident about proclaiming
3353 some instruction as an LRA. (thanks to Brian Downing)
3354 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3355 now each have their own history, command character, and other
3356 characteristics. (thanks to David Lichteblau)
3357 * fixed some bugs revealed by Paul Dietz' test suite:
3358 ** compiler failure in compiling LOGAND expressions including a
3360 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3361 shift greater than 32.
3362 ** FLUSH-DEST did not mark blocks for type check regeneration.
3363 ** HANDLER-CASE failed to accept declarations in handler clauses
3364 in some circumstances.
3366 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3367 * New code in contrib/sb-introspect (still probably not entirely
3368 stable yet) provides some support for smart Lisp development
3369 environments like SLIME.
3370 * The conditions signalled for errors occurring when loading .fasl
3371 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3372 in a way which should help ASDF recover gracefully.
3373 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3374 stuff has been cleaned up. If you code contrib/ stuff, this might
3375 affect you, and you can look at contrib/README, contrib/STANDARDS,
3376 and/or the 0.8.4.27 diff to check.
3377 * In full calls the compiler now does not generate checks for declared
3378 argument types for all arguments.
3379 * various threading fixes
3380 ** and some experimental patches which didn't make it into
3381 the main tree for this release, but which are shipped in
3382 contrib/experimental-thread.patch as a possible fix for some
3383 failures (deadlock, spinning...) in GC-intensive multithreaded
3385 * fixed PPC build problem (source code incompatibility of different
3386 library versions): added offsetof() hackery which attempts to divine
3387 where glibc maintainers put uc_mcontext today
3388 * fixed bug 282: compiler does not trust type assertions while passing
3389 arguments to a full call.
3390 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3391 &OPTIONAL VALUES type parameter.
3392 * fix bug 214: algorithm for noting rejected templates is now more
3393 similar to that of template seletion. (also reported by rydis on
3395 * fixed bug 141b: printing backquoted information readably and prettily
3396 inserts a space where necessary.
3397 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3398 (CHARACTER 10) are now reported as errors, rather than propagated
3399 as unknown types. (reported by piso on #lisp)
3400 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3401 with values NIL and :ERROR. (thanks to Milan Zamazal)
3402 * fixed bug 191c: CLOS now does proper keyword argument checking as
3403 described in CLHS 7.6.5 and 7.6.5.1.
3404 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3405 longer raise an error; further, using a list as a for-as-arithmetic
3406 counter now raises a meaningful error.
3407 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3408 now understood by sequence creation functions such as MAKE-SEQUENCE
3410 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3411 a STRING-INPUT-STREAM.
3412 * compiler enhancement: SIGNUM is now better able to derive the type
3414 * type declarations inside WITH-SLOTS are checked. (reported by
3416 * fixed some bugs revealed by Paul Dietz' test suite:
3417 ** incorrect optimization of TRUNCATE for a positive first
3418 argument and negative second.
3419 ** compiler failure in let-convertion during flushing dead code.
3420 ** compiler failure while deriving type of TRUNCATE on an
3421 interval, containing 0.
3422 ** ASH of a negative bignum by a negative bignum count now returns
3424 ** intersection of CONS types now canonicalizes properly, fixing
3425 inconsistencies in SUBTYPEP.
3427 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3428 * incompatible change: The --disable-debugger command line
3429 option now clobbers the debugger at a more fundamental
3430 level, by redefining #'INVOKE-DEBUGGER instead of by
3431 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3432 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3433 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3434 enter the debugger REPL and then suffer recursive errors
3435 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3436 while under the new system, BREAK in --disable-debugger mode
3437 terminates the system just as an unhandled error would.
3438 * fixed compiler performance when processing loops with a step >1;
3439 * bug fix: DOCUMENTATION now retrieves generic function
3440 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3441 support has been systematized, and now supports the methods
3442 specified by ANSI, along with a default method and a method for
3443 slot documentation. (reported by Nathan Froyd)
3444 * bug fix: effective methods associated with a generic function are
3445 no longer cached over a change of that generic function's method
3446 combination. (reported by Andreas Fuchs)
3447 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3448 names a non-existent directory. (thanks to Andreas Fuchs)
3449 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3450 the PPC platform, lead to stack corruption; this has been fixed.
3451 (reported by Rainer Joswig)
3452 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3453 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3454 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3455 arithmetic in general, is now much more reliable on the PPC
3457 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3458 platform now returns the right answer.
3459 * optimization: restored some effective method precomputation in
3460 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3461 precomputation is now tunable.
3462 * optimization: compiler-internal data structure use has been
3463 reviewed, and changes have been made that should improve the
3464 performance of the compiler by about 20%.
3465 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3466 simple-base-strings and simple-bit-vectors is improved.
3467 * optimization: the optimization of 32-bit logical and arithmetic
3468 functions introduced in version 0.8.3 on the x86 has been
3469 implemented on the mips, ppc and sparc platforms; an
3470 implementation of the same facility, but for 64-bit arithmetic,
3471 has been added for the alpha.
3472 * microoptimization: the compiler is better able to make use of the
3473 x86 LEA instruction for multiplication by constants.
3474 * bug fix: in some situations compiler did not report usage of
3475 generic arithmetic in (SPEED 3) policy.
3476 * bug 145b fix: compiler used wrong type specifier while converting
3477 MEMBER-types to numeric.
3478 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3480 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3481 index argument now works properly on the Alpha platform.
3482 * bug fix: floating point exception treatment on the Alpha platform
3484 * bug fix: FILE-POSITION works much better on string input and
3485 output streams. (thanks to Nikodemus Siivola)
3486 * bug fix: many threading/garbage collection symptoms sorted.
3487 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3488 might be pseudo-atomic.
3489 * internal change: Stopping for GC is now done with signals not
3490 ptrace. GC is now done in whichever thread wanted it, instead of
3492 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3494 * bug fix: result form in DO is not contained in the implicit
3496 * incompatible change: ICR structure is changed; the value part of
3497 CONTINUATION is now called LVAR; corresponding functions are
3498 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3499 * added type deriver for ISQRT (thanks to Robert E. Brown).
3500 * bug fix: better support for loading from the command line when an
3501 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3503 * fixed some bugs revealed by Paul Dietz' test suite:
3504 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3505 ** ROUND and FROUND now give the right answer when given very
3506 small float arguments.
3507 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3509 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3510 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3511 ** LCM should return a non-negative integer.
3512 ** PARSE-INTEGER returned the index of a terminator instead of the
3513 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3514 ** PARSE-INTEGER returned an incorrect index being applied to a
3516 ** LCM with two arguments of 0 returns 0 rather than signalling
3518 ** unsigned addition of a 32-bit constant with the high bit set no
3519 longer causes an internal compiler error on the x86.
3520 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3521 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3522 with negative last argument.
3523 ** byte specifiers with zero size and position no longer cause
3524 an error during type derivation.
3525 ** bignum multiplication on the Alpha platform now returns the
3527 * porting: The system now builds on SuSE AMD64, although it still
3528 generates a 32-bit binary.
3529 * .fasl file incompatibility: The fasl file version number has
3530 been incremented (because of the changes to internal compiler
3531 data structures referred to above).
3533 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3534 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3535 more accurately, on the Darwin kernel running on PowerPC hardware.
3536 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3537 * Compiler code deletion notes now signal a condition of type
3538 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3539 an associated MUFFLE-WARNING restart.
3540 * The compiler now performs limited argument count validation of
3541 constant format strings in FORMAT, and where appropriate in ERROR,
3542 CERROR and WARN. (thanks to Gerd Moellmann)
3543 * New ASDF-INSTALL contrib can be used for automatic download and
3544 installation of third-party Lisp code from CCLAN or other sites
3546 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3547 which forces another thread to execute a function supplied by the
3549 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3550 now accept and act upon their :ELEMENT-TYPE keyword argument.
3551 (reported by Martin Atzmueller, Edi Weitz)
3552 * bug fix: FILE-POSITION now accepts position designators up to
3553 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3554 is the greater. (thanks to Patrik Nordebo)
3555 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3556 Kalle Olavi Niemitalo)
3557 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3558 printable. (reported by Eric Marsden)
3559 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3560 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3561 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3562 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3563 (thanks to Stig Sandoe)
3564 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3565 UNREAD-CHAR now correctly includes the unread character in the
3566 target sequence. (thanks to Gerd Moellmann)
3567 * bug fix in threaded builds: the system can now be suspended and
3568 resumed by shell job control with minimal disruption.
3569 * bug fixes in times and timezones >2038AD
3570 * better handling of "where is GNU make?" problem in build scripts
3571 (thanks to Nikodemus Siivola)
3572 * new optimization: inside a named function any reference to a
3573 function with the same name is considered to be a self-reference;
3574 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3575 optimization quality.
3576 * new optimization on x86: logical functions and + now have
3577 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3578 used when the result is truncated to 32 bits.
3579 * VALUES declaration is partially enabled.
3580 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3581 * fixed some bugs revealed by Paul Dietz' test suite:
3582 ** The system now obeys the constraint imposed by
3583 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3584 types form a lattice under type intersection.
3585 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3586 ** ASSOC now ignores NIL elements in an alist.
3587 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3588 and (1+ MOST-POSITIVE-FIXNUM) answers.
3589 ** The addition of a method with invalid qualifiers to a generic
3590 function does not cause an error to be signalled immediately;
3591 a warning is signalled, and the error is generated only on
3592 calling the generic function.
3593 * changed .fasl file version number, in part to add type codes for
3594 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3595 obscure ANSI requirements
3597 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3598 * fixed bug 148: failure to inline-expand a local function left
3599 garbage, confusing the compiler.
3600 * fixed bugs 3cd: structure slot readers perform type check if the
3601 slot can have an invalid value (i.e. it is either not initialized
3602 or can be written with a less specific slot writer).
3603 * bug fix: the compiler now traps array references to elements off
3604 the end of an array; previously, the bounds checking in some
3605 circumstances could go off-by-one.
3606 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3608 * type declarations for array element types now obey the description
3609 on the CLHS page "Declaration TYPE", as per discussions on
3610 sbcl-help around 2003-05-08. This means that a declaration
3611 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3612 declaration, all references to BAR will be asserted or assumed
3613 (with THE, so dependent on compiler policy) to involve objects of
3614 type FOO. Note that no such declaration is implied in
3615 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3616 * declared types of functions from the "Conditions"
3617 chapter. (reported by Paul Dietz)
3618 * bug fix: CERROR accepts a function as its first argument.
3619 * bug fix: NTH an NTHCDR accept a bignum as index
3620 arguments. (reported by Adam Warner)
3621 * optimization: character compare routines now optimize comparing
3622 against a constant character. (reported by Gilbert Baumann)
3623 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3624 argument now works properly on the MIPS platform.
3625 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3626 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3627 declared to have a functional type, does not cause an error
3629 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3630 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3631 * fixed bug: if last continuation of a deleted block has a
3632 destination, this destination should be deleted too. (reported by
3634 * fixed a bug in the bootstrap process: the host compiler's values
3635 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3636 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3637 test case from Patrik Nordebo)
3638 * improved the ability of the disassembler on the PPC platform to
3639 provide helpful disassembly notes.
3640 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3641 the class in more cases than previously.
3642 * bug fix: FILE-POSITION now understands :START and :END for
3643 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3644 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3645 8) data. (thanks to David Lichteblau)
3646 * bug fix: it is possible to add a method to a generic function
3647 without lambda list.
3648 * bug fix: reader failed to signal END-OF-FILE inside an
3649 object representation. (reported by Nikodemus Siivola)
3650 * fixed some bugs revealed by Paul Dietz' test suite:
3651 ** LAST and [N]BUTLAST should accept a bignum.
3652 ** condition slot accessors are methods.
3653 ** (VECTOR NIL) is a subtype of STRING.
3655 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3656 * minor incompatible change: some nonsensical specialized lambda
3657 lists (used in DEFMETHOD) which were previously ignored now signal
3659 * minor incompatible change: the system is now aware of the types of
3660 variables in the COMMON-LISP package, and will signal errors for
3661 most violations of these type constraints (where previously they
3662 were silently accepted).
3663 * minor incompatible change: COMPILE-FILE now uses the freedom
3664 afforded (ANSI 3.2.2.3) to use derived function types for
3665 functions defined in the same file. This also permits the system
3666 to warn on static type mismatches and function
3667 redefinition. (Currently it does not work with high DEBUG level.)
3668 * minor incompatible change: VALUES declaration is disabled.
3669 * When issuing notes, the compiler now signals a condition of type
3670 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3671 restart for use in user handlers. It is expected that the
3672 COMPILER-NOTE condition will eventually become a condition
3673 supertype to a hierarchy of note types, which will then be
3674 handleable in a similar fashion. However, at the moment, no such
3675 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3676 but it's an implementation detail, not a classification for the
3678 * Changes in type checking closed the following bugs:
3679 ** type checking of unused values (192b, 194d, 203);
3680 ** template selection based on unsafe type assertions (192c, 236);
3681 ** type checking in branches (194bc).
3682 * A short form of VALUES type specifier has ANSI meaning (it has
3683 increased the number of situations when SBCL cannot perform type
3685 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3686 keywords or constants is permissible.
3687 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3688 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3689 classes. (thanks to Antonio Martinez)
3690 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3691 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3692 argument to a pretty-print stream. Instead, it leaves any such
3693 operations to DESCRIBE-OBJECT methods.
3694 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3696 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3697 lambda lists. (thanks to David Lichteblau)
3698 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3699 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3700 (thanks to Gerd Moellmann)
3701 * fixed bug 246: increased compilation speed of long
3702 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3704 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3706 * DEFCONSTANT now throws a condition of type
3707 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3708 constant to a non-EQL value; CONTINUE and ABORT restarts
3709 respectively change and preserve the value.
3710 * fixed bug 63: The code walker, part of the implementation of CLOS,
3711 is now better at handling symbol macros.
3712 * bug fix: There is no longer an internal implementation type named
3713 CL:LENGTH. (reported by Raymond Toy)
3714 * bug fix: In macro-like defining macros/special operators the
3715 implicit block does not enclose the lambda list.
3716 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3717 enclosed in parentheses) are not suitable as type specifiers, and
3718 their use properly signals an error now.
3719 * bug fix: An argument count mismatch for a type specifier in code
3720 being compiled no longer causes an unhandled error at compile
3721 time, but signals a compile-time warning.
3722 * fixed simple vector readable printing
3723 * bug fix: DESCRIBE takes more care over whether the class
3724 precedence list slot of a class is bound before accessing it.
3725 (reported by Markus Krummenacker)
3726 * bug fix: FORMATTER can successfully compile pretty-printer format
3727 strings which use variants of the ~* directive inside.
3728 * bug fix: SEARCH now applies its TEST predicate to the elements of
3729 the arguments in the correct order. (thanks to Wolfhard Buss)
3730 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3731 in type inference. (thanks to Robert E. Brown)
3732 * bug fix: Reading in symbols with an explicit package name of ""
3733 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3734 * fixed some bugs revealed by Paul Dietz' test suite:
3735 ** NIL is now allowed as a structure slot name.
3736 ** Arbitrary numbers, not just REALs, are allowed in certain
3737 circumstances in LOOP for-as-arithmetic clauses.
3738 ** Multiple class redefinitions before slot access no longer
3739 causes a type error.
3740 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3741 association between the name and a class.
3742 ** Generic functions with non-standard method-combination and over
3743 five methods all of which return constants no longer return NIL
3744 after the first few invocations. (thanks to Gerd Moellmann)
3745 ** CALL-NEXT-METHOD with no arguments now passes the original
3746 values of the arguments, even in the presence of assignment.
3747 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3749 ** DISASSEMBLE works with closures and funcallable instances.
3750 ** ADD-METHOD now returns the generic function, not the new method.
3751 ** FIND-METHOD signals an error if the lengths of the specializers
3752 is incompatible with the generic function, even if the ERRORP
3754 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3755 which its argument is a member.
3756 ** DEFCLASS only redefines the class named by its class-name
3757 argument if that name is the proper name of the class;
3758 otherwise, it creates a new class.
3759 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3760 of the UNBOUND-SLOT condition to the name of the slot.
3761 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3762 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3763 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3764 SLOT-MAKUNBOUND in the specified fashion.
3766 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3767 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3768 cross-compilation host. As a consequence, we can now bootstrap our
3769 way up to SBCL starting with a bare gcc toolchain and human-readable
3770 source code (first the source to CLISP, then the source to SBCL).
3771 * A contributed module containing a partial implementation of the
3772 simple-streams interface has been included. (thanks to Rudi
3774 * A contributed module implementing the RFC1321 Message Digest
3775 Algorithm, known as MD5, has been included.
3776 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3777 no longer has any effect, as the code controlled by this feature
3778 has been deleted. (As far as we know, no-one has ever built using
3779 this feature, and its semantics were confused in any case).
3780 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3781 work on conditions (as required by the ANSI specification),
3782 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3783 expected behaviour on conditions. Users should note, however,
3784 that such behaviour is not required by the ANSI specification,
3785 and so use of this behaviour may render their code unportable.
3786 * fixed some bugs revealed by Paul Dietz' test suite:
3787 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3789 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3790 ** SXHASH on condition objects no longer returns NIL.
3791 ** :ALLOCATION :CLASS slots are better treated; their values are
3792 updated on class redefinition, and initforms inherited from
3793 superclasses are applied.
3794 ** REMOVE-METHOD returns its generic function argument even when
3795 no method was removed.
3796 ** SHARED-INITIALIZE now initializes the values of the requested
3797 slots, including those with :ALLOCATION :CLASS.
3798 ** ALLOCATE-INSTANCE now works on structure classes defined via
3799 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3801 ** SLOT-EXISTS-P now works on conditions, as well as structures
3803 ** MAKE-LOAD-FORM now has the required methods on
3804 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3805 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3806 keyword, and now implements the SLOT-NAMES argument.
3807 ** methods with &OPTIONAL arguments no longer allow too many
3808 arguments to be passed in the call without error.
3809 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3810 option is consistent with the required arguments of the generic
3811 function lambda list.
3812 * bug fix: REQUIRE accepts a string designator. (Thanks to
3814 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3815 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3816 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3817 * bug fix: The compiler now checks for duplicated variables in macro
3819 * bug fix: SETQ on globals returns the correct value.
3820 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3821 not a COMPILER-ERROR (followed by some other strange error on
3822 choosing the CONTINUE restart).
3823 * bug fix: make.sh and friends are now more consistent in the way that
3824 they look for GNU "make".
3826 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3827 * experimental native threads support (on x86 Linux >=2.4 only).
3828 This is not compiled in by default: you need to add :SB-THREAD to
3829 the target features. See the "Beyond ANSI" chapter of the manual
3831 * fix for longstanding nonANSIism: The old distinction between
3832 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3833 The return value from CL:FIND-CLASS is now a CLOS class, and
3834 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3835 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3836 * An interface to the MetaObject Protocol, as described in Kiczales,
3837 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3838 MIT Press, 1991, is available from the SB-MOP package.
3839 * incompatible change: the SB-PCL package should now be considered
3840 a private implementation detail, and no longer a semi-private MOP
3842 * minor incompatible change: due to rearrangement for threads, the
3843 control stack and binding stack are now allocated at arbitrary
3844 addresses instead of being hardcoded per-port. Users affected by
3845 this probably have to be doing advanced things with shared
3846 libraries, and will know who they are.
3847 * minor incompatible change: Previously, all --eval forms used were
3848 processed with READ before any of them were processed with EVAL.
3849 Now each --eval form is processed with both READ and EVAL before
3850 the next --eval form is processed. (Thus package operations like
3851 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3852 work as the user might reasonably expect.)
3853 * minor incompatible change: *STANDARD-INPUT* is now only an
3854 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3856 * minor incompatible change: Y-OR-N-P is now character-oriented,
3857 not line oriented. Also, YES-OR-NO-P now works without errors.
3858 (thanks to Antonio Martinez)
3859 * sb-aclrepl module improvements: an integrated inspector, added
3860 repl features, and a bug fix to :trace command.
3861 * Known functions, which cannot be open coded by the backend, are
3862 considered to be able to check types of their arguments. (fixing
3863 a bug report by Nathan J. Froyd)
3864 * fixed a bug in computing method discriminating functions: It is
3865 now possible to define methods specialized on classes which have
3866 forward-referenced superclasses. (thanks to Gerd Moellmann)
3867 * fixed evaluation order in optional entries (reported by Gilbert
3869 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3870 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3871 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3872 required-by-AMOP NAME argument, as well as CLASS and
3873 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3874 * fixed bug 20: DEFMETHOD can define methods using names that are
3875 not the proper names of classes to designate class specializers.
3876 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3877 Unix file descriptors, instead of blowing up. (thanks to Antonio
3879 * Garbage collection refactoring: user-visible change is that a
3880 call to the GC function during WITHOUT-GCING will not do garbage
3881 collection until the end of the WITHOUT-GCING. If you were doing
3882 this you were probably losing anyway.
3883 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3884 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3885 TYPEP the latter but not the former.
3886 * The compiler issues a full WARNING for calls to undefined functions
3887 with names from the CL package.
3888 * MAP-INTO for a vector destination is open coded. (reported by
3889 Brian Downing on c.l.l)
3890 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3891 documentation string.
3892 * fixed some bugs revealed by Paul Dietz' test suite:
3893 ** COPY-ALIST now signals an error if its argument is a dotted
3895 ** Condition slots are now accessed more correctly in the presence
3896 of multiple initargs for a given slot.
3897 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3898 exclude restarts of the same name associated with a different
3900 ** DEFCLASS of forward-referenced classes with another
3901 forward-referenced class in the superclasses list no longer
3903 ** Condition slots are now initialized once each, not multiple
3904 times. (thanks to Gerd Moellmann)
3905 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3907 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3908 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3909 arguments contain duplicated elements.
3910 ** RESTART-CASE understands local macros.
3911 ** RESTART-CASE associates exactly its own restarts with a condition.
3912 ** ENDP in safe mode checks its argument to be of type LIST.
3913 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3914 in question is unbound.
3915 ** Optimized MAKE-INSTANCE functions no longer cause internal
3916 assertion failures in the presence of duplicate initargs.
3917 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3918 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3919 propagated even in the ctor optimized implementation of
3921 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3923 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3924 * a better implementation of SXHASH on (simple) bit vectors,
3925 measured both in execution speed and in distribution of results
3926 over the positive fixnums, has been installed. Likewise, a better
3927 implementation of EQUAL for simple bit vectors is now available.
3928 * fixed CEILING optimization for a divisor of form 2^k.
3929 * fixed bug 240 (emitting extra style warnings "using the lexical
3930 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3931 by Antonio Martinez)
3932 * fixed SXHASH, giving different results for NIL depending on type
3933 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3934 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3935 variable. (found by Rolf Wester)
3936 * SBCL does not ignore type declarations for special
3937 variables. (reported by rif on c.l.l 2003-03-05)
3938 * some bug fixes in contrib/sb-aclrepl/
3939 * fixed some bugs revealed by Paul Dietz' test suite:
3940 ** a bug in the CONS type specifier, whereby the CAR and CDR
3941 types got intertwined, has been fixed;
3942 ** the type system is now able to reason about the interaction
3943 between INTEGER and RATIO types more completely;
3944 ** APPEND, [N]REVERSE and NRECONC check that those their
3945 arguments, which must be proper lists, are really so;
3946 ** An array specialized to be unable to hold elements has been
3947 implemented, as required -- yes, really -- by ANSI;
3948 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3949 on malformed property lists;
3951 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3952 * incompatible packaging change: in line with Unix convention,
3953 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3954 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3955 * REQUIRE and PROVIDE are now optionally capable of doing something
3956 useful. See the documentation string for REQUIRE.
3957 * infrastructure for a managed SBCL contrib system: contributed
3958 modules in this release include:
3959 ** the ASDF system definition facility;
3960 ** an interface to the BSD Sockets API;
3961 ** an ACL-like convenience interface to the repl;
3962 (thanks to Kevin Rosenberg)
3963 ** an implementation of ROTATE-BYTE, with efficient implementation
3965 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3966 gives a closer approximation to the right answer than previously.
3967 (thanks to Raymond Toy)
3968 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3969 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3970 optional environment arguments, as required by ANSI.
3971 * fixed bugs in other functions taking environment objects, allowing
3972 calls with an explicit NIL environment argument to be compiled
3974 * fixed bug 228: primary return values from
3975 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3976 COMPILE or FUNCTION.
3977 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3978 :TYPE will no longer signal errors on innocuous objects.
3979 * fixed bug 231b: SETQ is better at respecting type declarations in
3980 the lexical environment.
3981 * fixed a bug in DEFCLASS: classes named by symbols with no or
3982 unprintable packages can now be defined.
3983 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3984 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3985 * fixed compiler failure related to checking types of functions.
3986 (reported by Robert E. Brown)
3987 * the compiler is now much more consistent in its error-checking
3988 treatment of bounding index arguments to sequence functions: in
3989 (SAFETY 3) code, errors will be signalled in almost all cases if
3990 invalid sequence bounding indices are passed to functions defined
3991 by ANSI to operate on sequences.
3992 * fixed a bug in the build procedure: documentation of SBCL-specific
3993 packages is now preserved and available in the final Lisp image.
3994 * lifted FDEFINITION lookup out of loops in the implementation of
3995 many list operations. (thanks to Robert E. Brown)
3996 * fixed a bug in the reader: the #n# reader macro now works for
3997 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3998 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3999 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4000 E. Brown and Tony Martinez respectively)
4001 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4002 SLOT-BOUNDP: in particular, it is now able to optimize them much
4003 better, and is now not vulnerable to having packages renamed.
4004 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4005 always called when a slot is not present in an instance. (thanks
4007 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4008 longer signal an error on unreading a character following EOF on
4009 the previous constituent stream. (thanks to Tony Martinez)
4010 * fixed some bugs revealed by Paul Dietz' test suite:
4011 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4012 not just nonnegative fixnums;
4013 ** the logical bit-array operators such as BIT-AND now accept an
4014 explicit NIL for their "opt-arg" argument (to indicate a
4015 freshly-consed result bit-array);
4016 ** ELT now signals an error on an invalid sequence index in safe
4018 ** the type system is now cleverer about negations of numeric
4019 types, and consequently understands the BIGNUM and RATIO types
4021 ** the type system is now cleverer about the interaction between
4022 INTEGER and RATIO types: while bugs still remain, many more
4023 cases are accurately computed;
4024 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4025 if it is in the last clause;
4026 ** CONSTANTLY now correctly returns a side-effect-free function in
4028 ** DECLARE is no longer treated as a special-operator; in
4029 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4030 * incremented fasl file version number due to the change in the
4031 DEFSTRUCT-SLOT-DESCRIPTION structure.
4033 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4034 * minor incompatible change: code processed by the "interpreter" or
4035 EVAL now has a compilation optimization policy of (DEBUG 2)
4036 (changed from (DEBUG 1)) to improve debuggability of interactive
4037 development, and to allow the use of the debug RETURN command in
4039 * an experimental implementation of the RETURN command for the
4040 debugger has been included. (thanks to Frederik Kuivinen)
4041 * fixed bug 62: constraints were not propagated into a loop.
4042 * fixed bug in embedded calls of SORT (reported and investigated by
4044 * fixed some bugs revealed by Paul Dietz' test suite:
4045 ** printing and reading of arrays with some dimensions having
4046 length 0 (thanks to Gerd Moellmann);
4047 ** BOA constructor with &AUX argument without a default value does
4048 not cause a type error;
4049 ** CONSTANTP now returns true for all self-evaluating objects.
4051 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4052 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4053 accessors that are related by inheritance, as specified in the
4054 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4055 Valtteri Vuorikoski)
4056 * The compiler is now able to inline functions that were defined in
4057 a complex lexical environment (e.g. inside a MACROLET).
4058 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4060 * Support for the upcoming FreeBSD-5.0 release has been included.
4061 (thanks to Dag-Erling Smorgrav)
4062 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4063 effect when it is not in a toplevel context.
4064 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4065 stand a better chance of being correct. (thanks to Gerd
4067 * fixed bug in COERCE, which now signals an error on coercing a
4068 rational to a bounded real type which excludes the expected
4070 * The compiler is now able to derive types more accurately from the
4071 COERCE and COMPILE functions.
4072 * fixed bug 223: functional binding is considered to be constant
4073 only for symbols in the CL package.
4074 * fixed bug 231: SETQ did not check the type of a variable being set
4075 (reported by Robert E. Brown)
4076 * A new optimization for MAKE-INSTANCE has been included, fixing
4077 various bugs (including relating to :ALLOCATION :CLASS slots and
4078 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4080 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4081 ** As required by ANSI, LOOP now disallows anonymous collection
4082 clauses such as COLLECT I in conjunction with aggregate boolean
4083 clauses such as THEREIS (= I 1);
4084 ** LOOP now signals an error when any variable is reused in the
4085 same loop (including the potentially useful construct analogous
4086 to WITH A = 1 WITH A = (1+ A);
4087 ** IT is only a special loop symbol within the first clause of a
4088 conditional loop clause;
4089 ** LOOP with a typed iteration variable over a hashtable now
4090 signals a type error iff it should.
4091 * fixed some other bugs revealed by Paul Dietz' test suite:
4092 ** FILE-STREAM now names the class previously known as FD-STREAM;
4093 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4094 argument) no longer signals an error;
4095 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4096 of the slot symbol, rather than using the current package
4097 ((:CONC-NAME "") continues to intern the slot's name in the
4099 * incremented fasl file version number, because of the incompatible
4100 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4101 of the new implementation of DEFINE-COMPILER-MACRO.
4103 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4104 * Support for building SBCL for MIPS platforms running in
4105 little-endian mode has now been checked in, and basic
4106 functionality on said platforms verified.
4107 * minor incompatible change: PCL now records the pathname of a file
4108 in which methods and the like are defined, rather than its
4110 * minor incompatible change: TRUENAME now considers the truename of
4111 a file naming a directory to be the pathname with :DIRECTORY
4112 component indicating that directory.
4113 * minor incompatible change: a NAMED clause in the extended form of
4114 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4115 reason for the previous behaviour is unclear.
4116 * more systematization and improvement of CLOS and MOP conformance
4117 in PCL (thanks to Gerd Moellman and Pierre Mai):
4118 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4120 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4121 primary methods with no specializers;
4122 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4124 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4125 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4126 FORWARD-REFERENCED-CLASSes; error reporting on
4127 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4129 ** SXHASH on CLOS instances now uses a slot internal to the
4130 instance to return different numbers on distinct instances,
4131 while preserving the same return value through invocations of
4133 ** DEFMETHOD signals errors when methods with longer incongruent
4134 lambda lists are added to generic functions;
4135 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4136 CLASS, as specified in AMOP;
4137 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4138 on the order returned by the primary method for classes of
4139 class STANDARD-CLASS;
4140 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4141 * fixed some bugs shown by Paul Dietz' test suite:
4142 ** DOLIST puts its body in TAGBODY;
4143 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4145 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4146 value producing form;
4147 ** if more variables are given to PROGV than values, extra
4148 variables are bound and made to have no value;
4149 ** NSUBSTITUTE on list arguments gets the right answer with
4151 ** ELT signals an error of type TYPE-ERROR when the index argument
4152 is not a valid sequence index;
4153 ** LOOP signals (at macroexpansion time) an error of type
4154 PROGRAM-ERROR when duplicate variable names are found;
4155 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4156 ** FUNCALL of special-operators now cause an error of type
4158 ** PSETQ now works as required in the presence of side-effecting
4159 symbol-macro places;
4160 ** NCONC accepts any object as its last argument;
4161 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4163 ** loop-for-as-package does not require a package to be explicitely
4165 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4167 * fixed bug 166: compiler preserves "there is a way to go"
4168 invariant when deleting code.
4169 * fixed bug 172: macro lambda lists with required arguments after
4170 &REST arguments now cause an error to be signalled. (thanks to
4172 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4173 bug. (thanks to Matthew Danish)
4174 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4176 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4177 arguments are lexically rebound. (thanks to Gerd Moellmann and
4179 * fixed bug 194: error messages are now more informative when there
4180 is no primary method applicable in a call to a generic
4181 function. (thanks to Gerd Moellmann)
4182 * fixed bug in command line argument checking (thanks to Julian
4184 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4185 (thanks to Matthew Danish)
4186 * incremented fasl file version number, because of the
4187 SXHASH-related changes in the layout of CLOS data structures
4189 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4190 * minor incompatible change: The runtime (the Unix executable named
4191 "sbcl") is now much pickier about the .core files it will load.
4192 Essentially it now requires .core files to descend from the same
4193 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4194 as the runtime does. (The intent is to prevent the crashes which
4195 can occur, and which can even be reported as mysterious failures,
4196 when people patch the sources or change the build parameters
4197 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4198 sbcl and .core files.)
4199 * fixed bug: VALUES-LIST is no longer optimized away.
4200 * fixed bug 142: The FFI conversion of C string values to Lisp
4201 string values no longer conses excessively. (thanks to Nathan
4202 Froyd porting Raymond Toy's fix to CMU CL)
4203 * began to systematize and improve MOP conformance in PCL (thanks to
4204 Nathan Froyd, Gerd Moellman and Pierre Mai):
4205 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4207 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4208 ** FINALIZE-INHERITANCE is now called on class finalization;
4209 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4210 argument precedence order.
4211 * fixed bug 202: The compiler no longer fails on functions whose
4212 derived types contradict their declared type.
4213 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4214 so it can be non-toplevel.
4215 * The fasl file version number has changed (because of the new
4216 implementation of DEFMACRO).
4217 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4218 safe code, that any length requirement by their type-specifier
4219 argument is valid. The exceptions to this are described in bug
4221 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4222 functions now check the types of their inputs as required by ANSI.
4223 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4224 introduced symbol is DECLAREd to be SPECIAL.
4225 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4226 * fixed bug: :COUNT argument to sequence functions may be negative
4227 * fixed bug: body of DO-SYMBOLS may contain declarations
4228 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4229 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4230 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4231 symbol macro only once
4232 * fixed printing of call frame when argument list is unavailable
4233 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4234 * compiler no longer signals WARNING on unknown keyword
4237 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4238 * A beta-quality port to the mips architecture running Linux,
4239 based on the old CMUCL backend, has been made. It has been tested
4240 on a big-endian kernel, and works sufficiently well to be able to
4241 rebuild itself; it has not been tested in little-endian mode.
4242 * fixed an inconsistency between gencgc.c and purify.c which made
4243 dumping/loading .core files unreliable
4244 * fixed bug 120a: The compiler now deals correctly with IFs where
4245 the consequent is the same as the alternative, instead of
4246 misderiving the return type. (thanks to Alexey Dejneka)
4247 * fixed bug 113: Logical pathnames are now dumpable (the logical
4248 host is resolved at load-time, throwing an error if it is not
4250 * fixed bug 174: FORMAT's error message is slightly clearer when a
4251 non-printing character is used in a format directive.
4252 * fixed several bugs in compiler checking of type declarations, i.e.
4253 violations of the Python "declarations are assertions" principle
4254 (thanks to Alexey Dejneka)
4255 * fixed several bugs in PCL's error checking (thanks to Gerd
4257 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4259 * fixed bug in compilation of functions as first class values
4260 (thanks to Antonio Martinez-Shotton)
4261 * The compiler's handling TYPE-ERRORs which it can prove will
4262 inevitably happen at runtime has been cleaned up and corrected
4263 in several ways. (thanks to Alexey Dejneka)
4264 * improved argument type checking for various basic arithmetic
4265 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4266 lavished on them in the past that they can be compiled in many
4267 ways in different special cases
4268 * fixed bug 181: compiler checks validity of user supplied type
4270 * cleaned up code flushing in optimization: Function calls which
4271 should signal errors for safety purposes (e.g. which ANSI says
4272 should signal errors when their arguments are of incorrect type)
4273 are no longer optimized away.
4274 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4275 * incremented fasl file version number, because changes in the
4276 implementation of sequence functions like COERCE caused
4277 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4278 in old inline expansions) to become undefined. (Actually these
4279 changes were later undone, so we might very well be binary
4280 compatible with 0.7.7 after all, but leaving the version number
4281 incremented seemed like the simplest and most conservative
4284 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4285 * An alpha-quality port to the parisc architecture running Linux,
4286 based on the old CMUCL backend, has been made. This, even more so
4287 than the other backends, should be considered still a work in
4288 progress; known problems include that the Linux kernel in 64-bit
4289 mode does not propagate the correct sigcontext structure to
4290 userspace, and consequently SBCL on a parisc64 kernel will not
4292 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4293 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4294 suppressed.) Also now that the compiler is looking at declarations
4295 in the environment, it checks optimization declarations as well,
4296 and suppresses inlining when (> DEBUG SPEED).
4297 * More fixes have been made to treatment of floating point exception
4298 treatment and other Unix signals. In particular, floating point
4299 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4300 * The detection and handling of control stack exhaustion (infinite
4301 or very deeply nested recursion) has changed. Stack exhaustion
4302 detection is now done by write-protecting pages at the OS level
4303 and applies at all optimization settings; when found, a
4304 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4305 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4306 be caught using IGNORE-ERRORS.
4307 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4308 correctly when transforming recursive LABELS functions to LETs.
4309 (thanks to Alexey Dejneka)
4310 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4311 that are names of constants or global variables.
4312 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4313 alien routines with docstrings.
4314 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4315 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4317 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4318 (thanks to Eric Marsden)
4319 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4320 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4321 * Bug fix: The SPARC backend can now compile functions involving
4322 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4323 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4324 to a functions expecting a PATHNAME-DESIGNATOR.
4325 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4326 lambda lists. (thanks to Alexey Dejneka)
4327 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4328 functions so that EXPORTing the name of the class doesn't cause
4329 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4330 to Antonio Martinez for reporting this)
4331 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4332 constant-folded without failing an assertion. (thanks to Einar
4333 Floystad Dorum for reporting this)
4334 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4335 types are now dealt with more correctly by the compiler.
4336 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4337 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4338 behaviour analogous to RENAME-FILE. This puts its behaviour more
4339 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4341 * The fasl file version number has changed again. (because of the
4342 bug fix involving the names of PCL MAKE-INSTANCE functions)
4344 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4345 * bug fix: Floating point exceptions are treated much more
4346 consistently on the x86/Linux and PPC/Linux platforms.
4347 * Array initialization with :INITIAL-ELEMENT is now much faster for
4348 cases when the compiler cannot open code the array creation, but
4349 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4350 array accesses have also seen a speed increase.
4351 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4352 specified. (This was at the root of some bad interactions between
4353 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4355 * bug fix: Internal error arguments for undefined functions are now
4356 computed correctly on the PPC/Linux platform.
4357 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4358 Raymond Toy's patch for CMU CL)
4359 * Support for the Solaris 9 operating environment has been included
4360 (thanks to Daniel Merritt)
4361 * A very ugly but hopefully complete draft of the missing FFI chapter
4362 of the manual has been created by reformatting the corresponding
4363 CMU CL manual chapter into (currently very ugly and incoherent)
4364 DocBook and bringing it up to date for SBCL behavior. Thus, the
4365 manual is now essentially complete, at least by my extreme
4366 once-and-only-once standards, whereby it's acceptable to refer to
4367 the doc strings of SB-EXT functions as the primary documentation.
4368 * The fasl file version number has changed again, due to cleanup of
4369 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4370 is no longer a static symbol.)
4372 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4373 * SBCL now builds with OpenMCL (version 0.12) as the
4374 cross-compilation host; also, more progress has been made toward
4375 bootstrapping under CLISP.
4376 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4378 * bug 158 fixed: The compiler can now deal with integer loop
4379 increments different from 1; fixing this turned out also to fix
4381 * bug 169 fixed: no more bogus warnings about using lexical bindings
4382 despite the presence of perfectly good SPECIAL declarations (thanks
4383 to David Lichteblau)
4384 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4385 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4386 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4388 * bug 180 fixed: Method combination specifications no longer ignore
4389 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4390 * bug fix: Structure type predicate functions now check their argument
4391 count as they should.
4392 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4393 correctly. (thanks to Pierre Mai)
4394 * minor incompatible change: The --noprogrammer option is deprecated
4395 in favor of the new --disable-debugger option, which is very similar.
4396 (The major difference is that it takes effect at a slightly different
4397 time at startup, causing handling of errors in --sysinit and
4398 --userinit files will be affected differently.) The
4399 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4400 been added to allow this functionality to be controlled from ordinary
4401 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4402 maintainers, who might want to run non-interactive scripts to
4403 build SBCL cores which will later be used interactively.)
4404 * minor incompatible change: The LOAD function no longer, when given
4405 a wild pathname to load, loads all files matching that pathname.
4406 Instead, an error of type FILE-ERROR is signalled.
4408 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4409 * bug 147 fixed: The compiler preserves its block link/count
4410 invariants more correctly now so that it doesn't crash. (thanks
4412 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4414 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4415 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4416 no-value-for-this-character as NIL (as specified by ANSI).
4417 * HOST-NAMESTRING on physical pathnames now returns a string that is
4418 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4419 (thanks to Christophe Rhodes)
4420 * The Alpha port handles icache flushing more correctly. (thanks to
4422 * More progress has been made toward bootstrapping under CLISP. (thanks
4423 to Christophe Rhodes)
4424 * The fasl file format has changed again, because dynamic loading
4425 on OpenBSD (which has non-ELF object files) motivated some cleanups
4426 in the way that foreign symbols are transformed and passed around.
4427 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4428 is no longer treated as whitespace by the reader, but instead as
4429 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4430 |A
\7fB|, instead of A as it used to.
4432 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4433 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4434 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4435 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4436 this as of 0.7.1.45, but was left out of the previous news section
4437 (thanks to Dan Barlow)
4438 * SBCL now runs on the Solaris operating system on SPARC architectures
4439 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4440 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4441 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4442 * SPARC backend cleanups, allowing builds of cores optimized for V8
4443 and V9 SPARCS, and also emission of code targeted to a particular
4444 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4446 * SBCL is closer to bootstrapping under CLISP, thanks to various
4447 fixes by Christophe Rhodes.
4448 * The fasl file format has changed again, to allow the compiler's
4449 INFO database to support symbol macros.
4450 * The user manual (in doc/) is formatted into HTML more nicely.
4451 (thanks to coreythomas)
4452 * The system is smarter about SUBTYPEP relationships, especially
4453 those involving NOT types (including types such as ATOM which are
4454 represented internally using NOT types). Thus SUBTYPEP is less
4455 likely to return (VALUES NIL NIL) in general, and in particular
4456 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4458 * The fasl file format has changed again, because the internal
4459 representation of types now includes a new slot to support the new
4460 SUBTYPEP-of-NOT-types logic.
4461 * (not a change in the main branch of SBCL, but a related prototype
4462 which can hopefully be merged into the main branch of SBCL in the
4463 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4464 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4465 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4466 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4467 dispatch macro character combinations. (thanks to Alexey Dejneka)
4468 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4469 that superficially look like logical namestrings correctly.
4470 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4472 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4473 default supplied-p) for &optional and &key arguments. (thanks to
4476 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4477 * incompatible change: The compiler is now less aggressive about
4478 tail call optimization, doing it only when (> SPACE DEBUG) or
4479 (> SPEED DEBUG). (This is an incompatible change because there are
4480 programs which relied on the old CMU-CL-style behavior to optimize
4481 away their unbounded recursion which will now die of stack overflow.)
4482 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4483 for non-GENCGC systems has been increased to 20M (since that
4484 seems much closer to the likely performance optimum for modern
4485 systems than the old 4M value was)
4486 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4487 and *DEBUG-PRINT-LEVEL*
4488 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4489 of CMU CL's support for SPARC, and various endianness and other
4490 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4491 * new syntactic sugar for the Unix command line: --load foo.bar is now
4492 an alternate notation for --eval '(load "foo.bar")'.
4494 ** The system now detects stack overflow and handles it gracefully,
4495 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4496 optimization settings. (This is a good thing in general, and
4497 its introduction in this version should be particularly timely
4498 for anyone whose code fails because of suppression of tail
4500 ** The system now hunts for the C variable "environ" in a more
4501 devious way, to avoid segfaults when the C library version differs
4502 between compile time and run time. (thanks to Christophe Rhodes)
4503 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4504 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4505 ** The compiler no longer issues bogus style warnings for undefined
4506 classes in the same source file as the DEFCLASSes which defined
4507 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4509 ** fixes in CONDITION class precedence list for undefined function
4510 errors (thanks to Alexei Dejneka)
4511 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4512 correctly. (thanks to Dan Barlow)
4513 ** portability fixes aiming at bootstrapping under CLISP (thanks
4514 to Dave McDonald and Christophe Rhodes)
4515 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4516 ** fixes in type translation and and type inference (thanks to
4518 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4519 ** various fixes in the new ports (thanks to Dan Barlow)
4520 * several changes related to debugging:
4521 ** suppression of tail recursion, as noted above
4522 ** stack overflow detection, as noted above
4523 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4524 is now the default. (For some time encapsulation has been more
4525 reliable than the breakpoint-based :ENCAPSULATE NIL
4526 implementation, at least on X86 systems; and I just noticed that
4527 encapsulation also seems closer to the spirit of the ANSI
4530 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4532 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4533 up properly again. (There was a packaging bug in 0.7.0 which
4534 left their definitions in SB-SYS::LOAD-FOREIGN and
4535 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4536 vital for most things which interface to C-level interfaces,
4537 like extensions working with sockets or databases or
4538 Perl-compatible regexes or whatever, and the need to fix
4539 this bug is the main reason that 0.7.1 was released so
4541 ** DEFGENERIC is now choosier about the methods it redefines, so that
4542 reLOADing a previously-LOADed file containing DEFGENERICs does
4543 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4544 cycle now works as it should. (thanks to Alexey Dejneka)
4545 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4546 fixed by Christophe Rhodes. (He actually submitted this patch
4547 months ago, and I delayed until after 0.7.0.)
4548 ** Bug 111 (internal compiler confusion about runtime checks on
4549 FUNCTION types) was fixed by Alexey Dejneka.
4550 * Some internal cleanups (getting rid of variables which aren't
4551 needed now that the byte interpreter is gone) caused the fasl
4552 file format number to change again.
4554 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4555 * major incompatible change: The default fasl file extension, i.e. the
4556 default extension for files produced by COMPILE-FILE, has changed
4557 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4559 ** There are many changes in the implementation of the compiler.
4560 SBCL is now essentially a compiler-only implementation of ANSI
4561 Common Lisp. EVAL still "interprets" a few special cases, but
4562 almost all the interesting cases are handled by creating
4563 a LAMBDA expression, calling COMPILE on it, then calling
4564 FUNCALL on the result.
4565 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4566 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4567 Since the code is newer, there might still be some new bugs
4568 (though not as many as before Martin Atzmueller's fixes:-). But
4569 the new code is substantially simpler and clearer, and hopefully
4570 any remaining bugs will be simpler, less fundamental, and more
4571 fixable then the bugs in the old code.
4572 ** The revised compiler is still a little unsteady on its feet.
4574 *** The debugging information it produces (particularly the names
4575 of FUNCTION objects) is sometimes much less useful than what
4576 the old compiler produced.
4577 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4578 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4579 within a MACROLET) has been temporarily weakened.
4580 ** There are new compiler optimizations for various functions:
4581 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4582 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4583 *** the math functions TRUNCATE, FLOOR, and CEILING
4584 *** the function-of-all-trades COERCE
4585 Mostly these should be transparent, but there's one
4586 potentially-annoying problem (bug 117): when the compiler
4587 inline-expands a function and does type analysis on the result,
4588 it can create control paths which have type mismatches, and
4589 when it can't prove that those control paths aren't taken,
4590 it will issue WARNINGs about the type mismatches. This is
4591 a particular problem in practice for the new sequence functions.
4592 It's not clear how this should be fixed, and for now, a
4593 workaround is given in the entry for 117 in the BUGS file.
4594 ** (Because of the interaction between the two previous items --
4595 occasional inlining problems and new inline expansions -- some
4596 of the new sequence function optimizations won't really kick in
4597 completely until debugging information, and then inlining, are
4598 straightened out in some future version.)
4599 * minor incompatible changes:
4600 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4601 DIRECTORY no longer implicitly promotes NIL slots of its
4602 pathname argument to :WILD. In particular, when you ask for the
4603 contents of a directory (which you used to be able to do without
4604 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4605 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4606 ** changes in behavior that ANSI explicitly defines to be
4607 implementation dependent:
4608 *** The new compiler-only implementation still conforms with ANSI,
4609 but acts a little different than before. Besides the obvious
4610 changes in performance tradeoffs (that the cost per form passed
4611 to EVAL has gone up, and the cost per form executed by EVAL
4612 has gone down), the behavior of the system changes a little
4613 because there are no longer any interpreted function objects.
4614 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4615 e.g. doing COMPILE on the output of interactive DEFUN is
4617 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4619 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4620 has changed from (:CL) to NIL.
4621 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4622 e.g. #\Newline and #\Tab, don't have names specified in the
4623 ANSI Common Lisp standard, is now based on their ASCII symbolic
4624 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4625 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4626 are no longer used for output.
4627 ** changes in internal implementation constants:
4628 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4629 4 million. (If your application spends a lot of time GCing and
4630 you have a lot of RAM, you might want to experiment with
4631 increasing it even more.)
4632 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4633 However, almost all old code should still continue to work without
4634 immediate update, as SB-C-CALL is now a (deprecated) nickname
4636 ** Old operator names in the style DEF-FOO are now deprecated in
4637 favor of new corresponding names DEFINE-FOO, for consistency with
4638 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4639 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4640 internal symbols, but a few supported extensions like
4641 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4642 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4643 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4644 etc. as you get deeper into recursive calls to the debugger
4645 command loop, instead of the old "5]", "5]]", "5]]]"
4646 sequence. (I was motivated to do this when squabbles between
4647 ILISP and SBCL left me very deeply nested in the debugger. In the
4648 short term, this change will probably provoke more ILISP/SBCL
4649 squabbles, but hopefully it will be an improvement in the long run.)
4650 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4651 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4652 function, since declaiming return types involving aliens is
4653 (1) annoyingly messy to do by hand and (2) vital to efficient
4654 compilation of code which calls such functions.
4655 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4656 longer reexported by the SB-EXT package. They're solely useful
4657 for alien code, so it seems more logical that you should get
4658 them from the SB-ALIEN package, not in SB-EXT.
4659 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4660 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4661 features. Instead, the code that they used to control is always
4662 built into the system.
4663 * many other bug fixes
4664 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4665 advantage of the new EVAL-WHEN stuff and to clean them up in
4666 general, and they are now more ANSI-compliant in a number of
4667 ways. Martin Atzmueller is responsible for a lot of this.
4668 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4670 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4671 *** correct ERROR type for various file operations
4672 *** some fixes for Lisp streams
4673 *** DEFMETHOD syntax checking
4674 *** changing old weird representation of debug information as
4675 strings (which, among their other deficiencies, don't transform
4676 correctly when you rename packages, and don't change their
4677 print representation when you change things like *PACKAGE*
4678 and *PRINT-LENGTH*) to symbols and lists of symbols
4679 He also made several improvements and fixed several bugs in DESCRIBE.
4680 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4682 *** misbehavior of WRITE-STRING/WRITE-LINE
4683 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4684 and several other LOOP problems as well
4685 *** DIRECTORY when similar filenames are present
4686 *** DEFGENERIC with :METHOD options
4687 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4688 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4689 *** argument ordering in FIND with :TEST option
4690 *** mishandled package designator argument in APROPOS-LIST
4691 *** various problems in the backquote readmacro
4692 *** a bug in APROPOS
4693 *** probably some others that I'm not describing very well here,
4694 since the CVS log documents them by reference to sbcl-devel
4695 messages, and the SourceForge archives aren't working well.:-(
4696 ** Dan Barlow improved the Alpha port (and is making progress on the
4697 PPC port, for those of you who think different).
4698 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4699 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4700 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4701 continues to work on the SPARC port (for those of you in a position
4702 to look down upon our little PC-compatible boxes from a great height).
4703 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4704 and uses that copy, rather than the current dynamic value, when
4705 it's trying to decide whether to truncate output. Thus e.g.
4706 (let ((*print-lines* 50))
4707 (pprint-logical-block (stream nil)
4709 (let ((*print-lines* 8))
4710 (print (aref possiblybigthings i) stream)))))
4711 should now truncate the logical block only at 50 lines, instead of
4712 often truncating it at 8 lines, as it did before.
4713 * The doc/cmucl/ directory, containing old CMU CL documentation
4714 from the time of the fork, is no longer part of the base system.
4715 SourceForge has shut down its anonymous FTP service, and with it
4716 my original plan for distributing the old CMU CL documentation
4717 there. For now, if you need these files you can download an old
4718 SBCL source release and extract them from it.
4719 * The fasl file version number changed again, for dozens of reasons,
4720 some of which are apparent above.
4722 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4723 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4724 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4725 patch, so that DISASSEMBLE output is much nicer.
4726 * The code in the SB-PROFILE package now seems reasonably stable.
4727 I still haven't decided what the final interface should look like
4728 (I'd like PROFILE to interact cleanly with TRACE, since both
4729 facilities use function encapsulation) but if you have a need
4730 for profiling now, you can probably use it successfully with
4731 the current CMU-CL-style interface.
4732 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4733 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4734 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4735 link now returns the dangling link itself, and for similar
4736 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4737 link itself. (In these cases the old code signalled an error and
4738 looped endlessly, respectively.) Thus, DIRECTORY now works even
4739 in the presence of dangling and cyclic symbolic links.
4740 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4741 is now a supported extension again, since the consensus on
4742 sbcl-devel was that it can be useful for ordinary development
4743 work, not just for debugging SBCL itself.
4744 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4745 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4746 that currently-defined functions might be redefined later with
4747 different return types.
4748 * Hash tables can be printed readably, as inspired by CMU CL code
4749 of Eric Marsden and SBCL code of Martin Atzmueller.
4750 * better error handling in CLOS method combination, thanks to
4751 Martin Atzmueller porting Pierre Mai's CMU CL patches
4752 * more overflow fixes for >16Mbyte I/O buffers
4753 * A bug in READ has been fixed, so that now a single Ctrl-D
4754 character suffices to cause end-of-file on character streams.
4755 In particular, now you only need one Ctrl-D at the command
4756 line (not two) to exit SBCL.
4757 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4759 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4760 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4761 does the right thing.
4762 * The implementation of some type tests, especially for CONDITION
4763 types, is now tidier and maybe faster, due to CMU CL code
4764 originally by Douglas Crosher, ported by Martin Atzmueller.
4765 * Some math functions have been fixed, and there are new
4766 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4767 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4768 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4769 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4770 likely to be built into sbcl-0.7.0.)
4771 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4772 CL, ported to SBCL by Martin Atzmueller)
4773 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4774 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4775 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4776 * There's a new slam.sh hack to shorten the edit/compile/debug
4777 cycle for low-level changes to SBCL itself, and a new
4778 :SB-AFTER-XC-CORE target feature to control the generation of
4779 the after-xc.core file needed by slam.sh.
4780 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4781 COMPILE-FILE is no longer supported, so that now every function
4782 gets an entry point, so that block compilation looks a little
4783 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4784 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4785 returns the number of bytes consed since the system started,
4786 rather than the number consed since the first time the function
4787 was called. (The new definition parallels ANSI functions like
4788 CL:GET-INTERNAL-RUN-TIME.)
4789 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4790 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4791 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4792 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4793 * Fasl file version numbers are now independent of the target CPU,
4794 since historically most system changes which required version
4795 number changes have affected all CPUs equally. Similarly,
4796 the byte fasl file version is now equal to the ordinary
4799 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4800 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4801 is no longer recognized. I apologize for this, because it was
4802 listed in SB-EXT as a supported extension, but I found that
4803 its existing behavior was poorly specified, as well as incorrectly
4804 specified, and it looked like too much of a mess to straighten it
4805 out. I have enough on my hands trying to get ANSI stuff to work..
4806 * many patches ported from CMU CL by Martin Atzmueller, with
4807 half a dozen bug fixes in pretty-printing and the debugger, and
4808 half a dozen others elsewhere
4809 * fixed bug 13: Floating point infinities are now supported again.
4810 They might still be a little bit flaky, but thanks to bug reports
4811 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4812 as flaky as they were.
4813 * The --noprogrammer command line option is now supported. (Its
4814 behavior is slightly different in detail from what the old man
4815 page claimed it would do, but it's still appropriate under the
4816 same circumstances that the man page talks about.)
4817 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4818 are now supported, and enabled by default. Thus, the compiler can
4819 handle many floating point and complex operations much less
4820 inefficiently. (Thus e.g. you can implement a complex FFT
4822 * The compiler now detects type mismatches between DECLAIM FTYPE
4823 and DEFUN better, and implements CHECK-TYPE more correctly, and
4824 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4825 thanks to patches from Martin Atzmueller.
4826 * various fixes to make the cross-compiler more portable to
4827 ANSI-conforming-but-different cross-compilation hosts (notably
4828 Lispworks for Windows, following bug reports from Arthur Lemmens)
4829 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4830 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4831 fixed thanks to Pierre Mai's CMU CL patches.
4832 * fixes to keep the system from overflowing internal counters when
4833 it tries to use i/o buffers larger than 16M bytes
4834 * fixed bug 45a: Various internal functions required to support
4835 complex special functions have been merged from CMU CL sources.
4836 (When I was first setting up SBCL, I misunderstood a compile-time
4837 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4838 * improved support for type intersection and union, fixing bug 12
4839 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4840 more obscure bugs as well
4841 * some steps toward byte-compiling non-performance-critical
4842 parts of the system, courtesy of patches from Martin Atzmueller
4843 * Christophe Rhodes has made some debian packages of sbcl at
4844 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4845 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4846 stable, but are nonetheless usable. When he's ready, I'd be happy
4847 to add them to the SourceForge "File Releases" section. (And if
4848 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4849 * new fasl file format version number (because of changes in
4850 internal representation of (OR ..) types to accommodate the new
4851 support for (AND ..) types, among other things)
4853 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4854 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4856 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4858 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4859 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4860 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4861 * DESCRIBE now works on structure objects again.
4862 * Most function call argument type mismatches are now handled as
4863 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4864 know whether the function will be redefined before the call is
4865 executed. (The compiler could flag local calls with full WARNINGs,
4866 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4867 it doesn't keep track of enough information to know whether calls
4868 are local in this sense.)
4869 * Compiler output is now more verbose, with messages truncated
4870 later than before. (There should be some supported way for users
4871 to override the default verbosity, but I haven't decided how to
4872 provide it yet, so this behavior is still controlled by the internal
4873 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4874 src/compiler/ir1util.lisp.)
4875 * Fasl file format version numbers have increased again, because
4876 support for the Gray streams extension changes the layout of the
4877 system's STREAM objects.
4878 * The Gray subclassable streams extension now works, thanks to a
4879 patch from Martin Atzmueller.
4880 * The full LOAD-FOREIGN extension (not just the primitive
4881 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4882 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4883 but like most other programs, it defaults to copying the Unix
4884 environment from the original process instead of starting the
4885 new process in an empty environment.
4886 * Extensions which manipulate the Unix environment now support
4887 an :ENVIRONMENT keyword option which doesn't smash case or
4888 do other bad things. The CMU-CL-style :ENV option is retained
4889 for porting convenience.
4890 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4891 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4893 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4895 * A patch from Martin Atzmueller seems to have solved the SIGINT
4896 problem, and as far as we know, signal-handling now works cleanly.
4897 (If you find any new bugs, please report them!)
4898 * The system no longer defaults Lisp source file names to types
4899 ".l", ".cl", or ".lsp", but only to ".lisp".
4900 * The compiler no longer uses special default file extensions for
4901 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4902 seems to expect a single default extension for all compiled code,
4903 and there's no compelling reason to try to stretch the standard
4904 to allow two different extensions.) Instead, byte-compiled files
4905 default to the same extension as native-compiled files.
4906 * Fasl file format version numbers have increased again, because
4907 a rearrangement of internal implementation packages made some
4908 dumped symbols in old fasl files unreadable in new cores.
4909 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4910 many fewer weird special cases.
4911 * Bug #17 (differing COMPILE-FILE behavior between logical and
4912 physical pathnames) has been fixed, and some related misbehavior too,
4913 thanks to a patch from Martin Atzmueller.
4914 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4915 by Tim Moore, ported to SBCL by Martin Atzmueller.
4916 * Martin Atzmueller fixed several filesystem-related problems,
4917 including bug #36, in part by porting CMU CL patches, which were
4918 written in part by Paul Werkowski.
4919 * More compiler warnings in src/runtime/ are gone, thanks to
4920 more patches from Martin Atzmueller.
4921 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4924 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4926 * DESCRIBE now works on CONDITION objects.
4927 * The debugger now handles errors which arise when trying to print
4928 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4930 * The build system now uses an additional file, customize-target-features.lisp,
4931 to allow local modifications to the target *FEATURES* list. (The point of
4932 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4933 debugging features enabled, without having to worry about propagating it
4934 into everyone's system when I do a "cvs update".) When no
4935 customize-target-features.lisp file exists, the target *FEATURES* list
4936 should be constructed the same way as before.
4937 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4938 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4939 warn about behavior which is undefined under the ANSI spec. Note: This
4940 is specified by ANSI, but it's not very popular with programmers.
4941 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4942 macro in the SBCL sources for an example of a workaround which you
4943 might use to make portable ANSI-standard code which does what you want.
4944 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4945 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4946 when it's used as a non-toplevel form. (This is required in order
4947 to implement the DEFCONSTANT-EQX macro.)
4948 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4949 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4950 funny things, due to bugs in the implementation of EVAL-WHEN
4951 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4952 non-toplevel DEFCONSTANTs are uncommon.)
4953 * The core file version number and fasl file version number have been
4954 incremented, because the old noncompliant DEFCONSTANT behavior involved
4955 calling functions which no longer exist, and because I also took the
4956 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4957 * fixed bug 1 (error handling before read-eval-print loop starts), and
4958 redid debugger restarts and related debugger commands somewhat while
4960 ** The QUIT debugger command is gone, since it did something
4961 rather different than the SB-EXT:QUIT command, and since it never
4962 worked properly outside the main toplevel read/eval/print loop.
4963 Invoking the new TOPLEVEL restart provides the same functionality.
4964 ** The GO debugger command is also gone, since you can just invoke
4965 the CONTINUE restart directly instead.
4966 ** The TOP debugger command is also gone, since it's redundant with the
4967 FRAME 0 command, and since it interfered with abbreviations for the
4969 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4971 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4972 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4973 some porting work by Martin Atzmueller)
4974 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4975 with a boatload of patches which he ported to SBCL. Now that those
4977 ** The system tries to make sure that its low-priority messages
4978 are prefixed by semicolons, to help people who like to use
4979 syntax highlighting in their ILISP buffer. (This patch
4980 was originally due to Raymond Toy.)
4981 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4982 patches originally written by Raymond Toy.
4983 ** The compiler understands coercion between single-value and
4984 multiple-VALUES type expressions better, getting rid of some very
4985 weird behavior, thanks to patches originally by Robert MacLachlan
4986 and Douglas Crosher.
4987 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4988 lambda lists, thanks to a patch originally by Pierre Mai.
4989 ** The system no longer bogusly warns about "abbreviated type
4991 ** The compiler gets less confused by inlining and RETURN-FROM,
4992 thanks to some patches originally by Tim Moore.
4993 ** The system no longer hangs when dumping circular lists to fasl
4994 files, thanks to a patch originally from Douglas Crosher.
4995 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4996 undefined function error.
4997 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4998 in structure slot initforms) for now, documented workaround instead:-|
4999 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5000 * fixed bug 5: added stubs for various Gray stream functions called
5001 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5002 installed, at least appropriate type errors are generated
5003 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5004 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5005 consistently in DEFMETHOD forms.
5006 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5007 it doesn't seem to affect SBCL after all
5008 * The C runtime system now builds with better optimization and many
5009 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5011 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5013 * The system is now under CVS at SourceForge (instead of the
5014 CVS repository on my home machine).
5015 * The new signal handling code has been tweaked to treat register
5016 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5017 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5018 downstream, e.g. in debug-int.lisp, has implicit dependencies
5019 on the unsignedness of integer representation of machine words,
5020 and that caused the system to bomb out with infinite regress
5021 when trying to recover from type errors involving signed values,
5022 e.g. (BUTLAST '(1 2 3) -1).)
5023 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5024 (This was one of the bugs Peter Van Eynde reported back in July.)
5025 * The system now uses code inspired by Colin Walters' O(N)
5026 implementation of MAP (from the cmucl-imp@cons.org mailing
5027 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5028 inline the MAP operation, and there is more than one
5029 sequence argument to the MAP call (so that it can't just
5030 do ETYPECASE once and for all based on the type of the
5031 single sequence argument). (The old non-inline implementation
5032 of the general M-argument sequence-of-length-N case required
5033 O(M*N*N) time when any of the sequence arguments were LISTs.)
5034 * The QUIT :UNIX-CODE keyword argument has been renamed to
5035 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5036 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5038 * Raymond Wiker's patches to port dynamic loading from Linux to
5039 FreeBSD have been added.
5040 * The BUGS file is now more nearly up to date, thanks in large part
5041 to Martin Atzmueller's review of it.
5042 * The debugger now flushes standard output streams before it begins
5043 its output ("debugger invoked" and so forth).
5044 * The core version number and fasl file version number have both
5045 been incremented, because of incompatible changes in the layout
5047 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5048 used to not be called for a saved Lisp image.)
5049 * Martin Atzmueller's version of a patch to fix a compiler crash,
5050 as posted on sbcl-devel 13 September 2000, has been installed.
5051 * Instead of installing Martin Atzmueller's patch for the
5052 compiler transform for SUBSEQ, I deleted the compiler transform,
5053 and transforms for some similar consing operations.
5054 * A bug in signal handling which kept TRACE from working on OpenBSD
5056 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5057 away by constant folding
5058 * The system now defines its address space constants in one place
5059 (in the Lisp sources), and propagates them automatically elsewhere
5060 (through GENESIS and the sbcl.h file). Therefore, patching the
5061 address map is less unnecessarily tedious and error-prone. The
5062 Lisp names of address space constants have also been systematized.
5063 * CVS tags like dollar-Header-dollar have been removed from
5064 the sources, because they have never saved me trouble and
5065 they've been source of trouble working with patches and other
5066 diff-related operations.
5067 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5068 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5070 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5072 * The system has been ported to OpenBSD.
5073 * The system now compiles with a simple "sh make.sh" on the systems
5074 that it's supported on. I.e., now you no longer need to tweak
5075 text in the target-features.lisp-expr and symlinks in src/runtime/
5076 by hand, the make.sh takes care of it for you.
5077 * The system is no longer so grossly inefficient when compiling code
5078 involving vectors implemented as general (not simple) vectors (VECTOR T),
5079 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5080 which dares to use the various sequence functions on non-simple
5081 vectors, takes less of a performance hit.
5082 * There is now a primitive type predicate VECTOR-T-P
5083 to test for the (VECTOR T) type, so that e.g.
5084 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5085 can now be compiled with some semblance of efficiency. (The old code
5086 turned the type declaration into a full call to %TYPEP at runtime!)
5087 * AREF on (VECTOR T) is still not fast, since it's still compiled
5088 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5089 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5090 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5091 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5092 without making full calls to SUBTYPEP at runtime.
5093 (Some analogous efficiency issues for non-simple vectors specialized to
5094 element types other than T, or for non-simple multidimensional arrays,
5095 have not been addressed. They could almost certainly be handled the
5096 same way if anyone is motivated to do so.)
5097 * The changes in array handling break binary compatibility, so
5098 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5099 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5100 instead of (VALUES T T).
5101 * By following the instructions that Dan Barlow posted to sbcl-devel
5102 on 2 July 2000, I was able to enable primitive dynamic object
5103 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5104 functionality is not implemented (since it calls ld to resolve
5105 library references automatically, requiring RUN-PROGRAM for its
5106 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5107 try to resolve library references) is now supported.
5108 * The system now flushes the standard output streams when it terminates,
5109 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5110 them at several other probably-convenient times, e.g. in each pass of
5111 the toplevel read-eval-print loop, and after evaluating a form given
5112 as an "--eval" command-line option. (These changes were motivated by a
5113 discussion of stream flushing issues on cmucl-imp in August 2000.)
5114 * The source transform for TYPEP of array types no longer assumes
5115 that an array whose element type is a not-yet-defined type
5116 is implemented as an array of T, but instead punts, so that the
5117 type will be interpreted at runtime.
5118 * There is now some support for cross-compiling in make.sh: each of
5119 the phases of make.sh has its own script. (This should be transparent
5120 to people doing ordinary, non-cross-compile builds.)
5121 * Since my laptop doesn't have hundreds of megabytes of memory like
5122 my desktop machine, I became more motivated to do some items on
5123 my to-do list in order to reduce the size of the system a little:
5124 ** Arrange for various needed-only-at-cold-init things to be
5125 uninterned after cold init. To support this, those things have
5126 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5127 symbols with such names are now uninterned after cold init).
5128 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5129 fasl files for cold load.
5130 ** Remove the old compiler structure pooling code (which used to
5131 be conditional on the target feature :SB-ALLOC) completely.
5132 ** Redo the representation of some data in cold init to be more compact.
5133 (I also looked into supporting byte compiled code at bootstrap time,
5134 which would probably reduce the size of the system a lot, but that
5135 looked too complicated, so I punted for now.)
5136 * The maximum signal nesting depth in the src/runtime/ support code has
5137 been reduced from 4096 to 256. (I don't know any reason for the very
5138 large old value. If the new smaller value turns out to break something,
5139 I'll probably just bump it back up.)
5140 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5142 * Many, many bugs reported by Peter Van Eynde have been added to
5143 the BUGS list; some have even been fixed.
5144 * While enabling dynamic object file loading, I tried to make the
5145 code easier to understand, renaming various functions and variables
5146 with less ambiguous names, and changing some function calling
5147 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5148 * While trying to figure out how to do the OpenBSD port, I tried to
5149 clean up some of the code in src/runtime/. In particular, I dropped
5150 support for non-POSIX signal handling, added various comments,
5151 tweaked the code to reduce the number of compilation warnings, and
5152 renamed some files to increase consistency.
5153 * To support the new automatic configuration functionality in make.sh,
5154 the source file target-features.lisp-expr has been replaced with the
5155 source file base-target-features.lisp-expr and the machine-generated
5156 file local-target-features.lisp-expr.
5157 * fixed a stupid quoting error in make.sh so that using CMU CL
5158 "lisp -batch" as cross-compilation host works again
5160 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5162 * DESCRIBE no longer tries to call itself recursively to describe
5163 bound/fbound values, so that it no longer fails on symbols which are
5164 bound to themselves (like keywords, T, and NIL).
5165 * DESCRIBE now works on generic functions.
5166 * The printer now prints less-screwed-up representations of closures
5167 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5168 * A private symbol is used instead of the :EMPTY keyword previously
5169 used to mark empty slots in hash tables. Thus
5170 (DEFVAR *HT* (MAKE-HASH-TABLE))
5171 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5172 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5173 now does what ANSI says that it should. (You can still get
5174 similar noncompliant behavior if bang on the hash table
5175 implementation with all the symbols you get back from
5176 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5177 This breaks binary compatibility, since tests for equality to
5178 :EMPTY are wired into things like the macroexpansion of
5179 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5181 * There's now a minimal placeholder implementation for CL:STEP,
5182 as required by ANSI.
5183 * An obscure bug in the interaction of the normal compiler, the byte
5184 compiler, inlining, and structure predicates has been patched
5185 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5186 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5188 * Missing ordinary arguments in a macro call are now detected even
5189 when the macro lambda list contains &KEY or &REST.
5190 * The debugger no longer complains about encountering the top of the
5191 stack when you type "FRAME 0" to explicitly instruct it to go to
5192 the top of the stack. And it now prints the frame you request even
5193 if it's the current frame (instead of saying "You are here.").
5194 * As specified by ANSI, the system now always prints keywords
5195 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5197 * The default initial SIZE of HASH-TABLEs is now smaller.
5198 * Type information from CLOS class dispatch is now propagated
5199 into DEFMETHOD bodies, so that e.g.
5200 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5202 is now basically equivalent to
5203 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5204 (DECLARE (TYPE SINGLE-FLOAT X))
5206 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5207 operation, without having to do run-time type dispatch.
5208 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5209 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5210 * Since I don't seem to be making big file reorganizations very often
5211 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5212 is overflowing my ability to conveniently back them up), I've finally
5213 checked the system into CVS. (The CVS repository is on my home system,
5214 not at SourceForge -- putting it on SourceForge might come later.)
5215 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5216 high-level GC-NOTIFY-FOO functions send their output. (There's
5217 still very little control of where low-level verbose GC functions
5218 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5219 less than it used to -- the GC-NOTIFY-FOO functions are now under
5220 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5221 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5222 in only one place in the source code, and propagates it automatically
5223 everywhere that it's needed. Thus e.g. when I bump the version from
5224 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5225 * The C source files now include boilerplate legalese and documentation
5226 at the head of each file (just as the Lisp source files already did).
5227 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5228 to his page will be replaced with a link to his new CLiki service.
5230 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5232 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5233 * The build process now looks for GNU make under the default name "gmake",
5234 instead of "make" as it used to. If GNU make is not available as "gmake"
5235 on your system, you can change this default behavior by setting the
5236 GNUMAKE environment variable.
5237 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5238 can build without error under CMU CL.
5240 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5242 * There is now a partial SBCL user manual (with some new text and some
5243 text cribbed from the CMU CL manual).
5244 * The beginnings of a profiler have been added (starting with the
5245 CMU CL profiler and simplifying and cleaning up). Eventually the
5246 main interface should be through the TRACE macro, but for now,
5247 it's still accessed through vaguely CMU-CL-style functions and macros
5248 exported from the package SB-PROFILE.
5249 * Some problems left over from porting CMU CL to the new
5250 cross-compilation bootstrap process have been cleaned up:
5251 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5252 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5253 part when getting rid of the compiler *BACKEND* stuff.)
5254 ** The value of *NULL-TYPE* was screwed up, because it was
5255 being initialized before the type system knew the final
5256 definition of the 'NULL type. This screwed up several key
5257 optimizations in the compiler, causing inefficiency in all sorts
5258 of places. (I found it because I wanted to understand why
5259 GET-INTERNAL-RUN-TIME was consing.)
5260 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5261 PROCLAIM FTYPE information. Unfortunately this broke binary
5262 compatibility again, since now the forms output by DEFGENERIC
5263 to refer to functions which didn't exist in 0.6.3.
5264 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5265 can use the new (as of 0.6.3) transform for SOME into MAP into
5267 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5268 values to (INTEGER 0 1000000), so that the time code will no longer
5269 occasionally get blown up by Linux returning 1000000 microseconds
5270 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5271 its output conform to the ANSI spec. (Alas, this makes its output
5272 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5273 * A full call to MAP NIL with a single sequence argument no longer conses.
5274 * fixes to problems pointed out by Martin Atzmueller:
5275 * The manual page no longer talks about multiprocessing as though
5276 it were currently supported.
5277 * The ILISP support patches have been removed from the distribution,
5278 because as of version 5.10.1, ILISP now supports SBCL without us
5279 having to maintain patches.
5280 * added a modified version of Raymond Toy's recent CMU CL patch for
5281 EQUALP comparison of HASH-TABLE
5283 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5285 * The system still can't cross-compile itself with
5286 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5287 entails), but at least it can compile more of itself that way
5288 than it used to be able to, and various buglets which were uncovered
5289 by trying to cross-compile itself that way have now been fixed.
5290 * This release breaks binary compatibility again. This time
5291 at least I've incremented the FASL file format version to 2, so that the
5292 problem can be detected reliably instead of just causing weird errors.
5293 * various new style warnings:
5294 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5295 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5296 ** using the lexical binding of a variable named in the *FOO* style
5297 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5298 as specified by ANSI.
5299 * *RANDOM-STATE* is no longer automatically initialized from
5300 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5301 default behavior of the system is to repeat its behavior every time
5302 it's run. If you'd like to change this behavior, you can always
5303 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5304 old convention there was no comparably easy way to get the system to
5305 repeat its behavior every time it was run.
5306 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5307 FTYPE declarations has been removed, in favor of their ANSI
5308 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5309 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5310 the types of their sequence arguments can be determined at compile time.
5311 This is done through a new open code expansion for MAP which eliminates
5312 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5313 argument types can be determined at compile time.
5314 * The optimizer now transforms COERCE into an identity operation when it
5315 can prove that the coerced object is already of the correct type. (This
5316 can be a win for machine generated code, including the output of other
5317 optimization transforms, such as the MAP transform above.)
5318 * Credit information has been moved from source file headers into CREDITS.
5319 * Source file headers have been made more standard.
5320 * The CASE macro now compiles without complaining even when it has
5323 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5325 * (Note that the way that the PCL macroexpansions were rewritten
5326 to accommodate the change in DEFGENERIC below breaks binary
5327 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5328 not run under sbcl-0.6.2. Once we get out of alpha releases,
5329 i.e. hit release 1.0.0, we'll probably try to maintain binary
5330 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5331 and sbcl-1.4.4. Until then, however, it might be fairly common
5332 for maintenance releases to break binary compatibility.)
5333 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5335 * The reporting of unhandled signals has been changed to print some
5336 explanatory text as well as the report form. (Previously only
5337 the report form was printed.)
5338 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5339 it defines, so that the compiler no longer issues undefined function
5340 warnings for compiled-but-not-yet-loaded generic functions.
5341 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5342 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5343 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5344 section of the ANSI spec are supported.
5345 * The "" nickname for the "KEYWORD" package has been removed.
5346 The reader still handles symbol tokens which begin with a package marker
5347 as keywords, but it doesn't expose its mechanism for doing so in the
5348 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5349 * The system now issues STYLE-WARNINGs for contradictory TYPE
5350 proclamations. (Warnings for contradictory FTYPE proclamations would
5351 be nice too, but those can't be done usefully unless the type system
5352 is made smarter about FUNCTION types.)
5353 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5354 systematized, so that "*target-*.lisp is supposed to exist only on the
5355 target and imply that there's a related file which exists on the
5356 host, and *host-*.lisp is supposed to exist only on the host and imply
5357 that there's a related file which exists on the target. This involves a
5358 lot of renaming. Hopefully the acute confusion caused by the renaming
5359 will be justified by the reduction in chronic confusion..
5360 ** runtime-type.lisp -> early-target-type.lisp
5361 ** target-type.lisp -> late-target-type.lisp
5362 ** early-host-format.lisp -> early-format.lisp
5363 ** late-host-format.lisp -> late-format.lisp
5364 ** host-error.lisp -> misc-error.lisp
5365 ** early-error.lisp -> early-target-error.lisp
5366 ** late-error.lisp -> late-target-error.lisp
5367 ** host-defboot.lisp -> early-defboot.lisp
5368 ** code/misc.lisp -> code/target-misc.lisp
5369 ** code/host-misc.lisp -> code/misc.lisp
5370 ** code/numbers.lisp -> code/target-numbers.lisp
5371 ** code/early-numbers.lisp -> numbers.lisp
5372 ** early-host-type.lisp -> early-type.lisp
5373 ** late-host-type.lisp -> late-type.lisp
5374 ** host-typep.lisp -> typep.lisp
5375 ** load.lisp -> target-load.lisp
5376 ** host-load.lisp -> load.lisp
5377 ** host-disassem.lisp -> disassem.lisp
5378 ** host-insts.lisp -> insts.lisp
5379 ** byte-comp.lisp -> target-byte-comp.lisp
5380 ** host-byte-comp.lisp -> byte-comp.lisp
5381 ** host-signal.lisp -> signal.lisp
5382 ** host-defstruct.lisp -> defstruct.lisp
5383 ** late-target-type.lisp -> deftypes-for-target.lisp
5384 Furthermore, several other previously target-only files foo.lisp (e.g.
5385 hash-table.lisp and random.lisp) have been split into a target-and-host
5386 foo.lisp file and a target-only target-foo.lisp file, with their key type
5387 definitions in the target-and-host part, so that the cross-compiler will
5388 know more about target types.
5389 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5390 gone away. In their place are various *BACKEND-FOO* variables
5391 corresponding to the slots of the old structure.
5392 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5393 into the target SBCL has been fixed.
5394 * The chill.lisp system for loading cold code into a running SBCL
5396 * Support for the CMU CL "scavenger hook" extension has been removed.
5397 (It was undocumented and unused in the CMU CL sources that SBCL was
5398 derived from, and stale in sbcl-0.6.1.)
5399 * Various errors in the cross-compiler type system were detected
5400 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5401 (enabling various consistency checks). Many of them were fixed,
5402 but some hard problems remain, so the compiler is back to
5403 running without *TYPE-SYSTEM-INITIALIZED* for now.
5404 * As part of the cross-compiler type system cleanup, I implemented
5405 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5406 * I have started adding UNCROSS calls throughout the type system
5407 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5408 on cross-compiler input files will be able to go away, and various
5410 * CONSTANTP now returns true for quoted forms (as explicitly required
5413 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5415 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5416 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5417 (MAKE-LIST -1). In the longer term, it ought to become true
5418 that declarations are assertions even at SAFETY 1. For now, it's not
5419 quite true even at SAFETY 3, but it's at least more nearly true..
5420 (Note that this change seems to increases the size of the system by
5421 O(5%) and to decrease the speed of the compiler by 20% or more.)
5422 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5423 for the problem of printing dozens of lines of distracting information
5424 about low-level system machinery as part of the top stack frame
5425 on entry to the debugger when an undefined function was called.
5426 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5427 is not reset to COMMON-LISP-USER.
5428 * Compilation of stuff related to dyncount.lisp has been made conditional
5429 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5430 smaller. The various dyncount-related symbols have been moved into
5431 a new "SB-DYNCOUNT" package.
5432 * tty-inspect.lisp has been renamed to inspect.lisp.
5433 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5434 feature has gone away. (When we eventually port to other flavors of
5435 libc and/or Unix, we'll try to make the differences between flavors
5436 invisible at the user level.)
5437 * Various other *FEATURES* tags, and/or their associated conditionals,
5438 have been removed if obsolescent, or given better documentation, or
5439 sometimes given more-mnemonic names.
5441 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5443 * tidied up "make.sh" script
5444 * tidied up system directory structure
5445 * better "clean.sh" behavior
5446 * added doc/FOR-CMUCL-DEVELOPERS
5447 * many many small tweaks to output format, e.g. removing possibly-confusing
5448 trailing #\. character in DESCRIBE-INSTANCE
5449 * (EQUALP #\A 'A) no longer signals an error.
5450 * new hashing code, including EQUALP hashing
5451 * tidied up Lisp initialization and toplevel
5452 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5453 * command line argument processing
5454 * added POSIX-GETENV function to deal with Unix-ish environment variables
5455 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5456 terminating SBCL on EOF
5457 * non-verbose GC by default
5458 * There is no more "sbcl" shell script; the sbcl file is now the C
5459 runtime executable (just like CMU CL).
5460 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5462 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5463 symbol and package information as Lisp native symbol and package objects
5464 instead of strings naming symbols and strings naming packages. This way,
5465 whenever packages are renamed (as in warm init), debug information is
5466 transformed along with everything else.
5467 * tweaked the optimization policy declarations which control the building
5468 of SBCL itself. Now, among other things, the system no longer saves
5469 source location debugging information. (This helps two problems at once
5470 by reducing SBCL size and by keeping SBCL from trying to look for its
5471 sources -- which may not exist -- when reporting errors.)
5472 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5473 debugging and testing purposes
5474 * cleaned up printing, making the printer call PRINT-OBJECT for
5475 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5476 methods, giving nearly-ANSI behavior
5477 * converted almost all special variables to use *FOO* naming convention
5478 * deleted PARSE-TIME functionality, since it can be done portably
5479 * moved some files out of cold init into warm init
5480 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5482 * regularized formatting of source files
5483 * added an install.sh script
5484 * fixed ridiculous memory usage of cross-compiler by making
5485 compiler/alloc.lisp not try to do pooling unless it can hook
5486 itself into the GC of the cross-compilation host. Now the system
5487 builds nicely on my old laptop.
5488 * added :SB-ALLOC in target-features.lisp-expr
5489 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5490 was not implemented)
5491 * re-did condition handling and note reporting in the compiler. Notes
5492 are no longer handled by signalling conditions. Style warnings
5493 and warnings are handled more correctly and reported in such a way
5494 that it's easy to find one or the other in your output (so that you
5495 can e.g. figure out which of many problems caused COMPILE-FILE to
5497 * changed the severity of several compiler warnings from full WARNING
5498 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5499 compiler note reporting so that it doesn't use the condition system
5500 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5501 COMPILE-FILE command)
5502 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5503 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5504 no longer supported, since their implementation was deeply intertwingled
5505 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5506 * removed bogus "support" for compiler macros named (SETF FOO), and
5507 removed the compiler macro for SETF INFO (but only after making a fool
5508 of myself on the cmucl-imp mailing list by posting a bogus patch for
5509 DEFINE-COMPILER-MACRO..)
5510 * Compiled files containing forms which have side effects on the Lisp
5511 reader (such as DEFPACKAGE forms) are now handled more correctly.
5512 (Compiler queuing of top level lambdas has been suppressed by setting
5513 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5514 * deleted various currently-unused source files, e.g. gengc.lisp. They
5515 may be added back at some point e.g. when porting to other architectures,
5516 but until they are it's distracting to distribute them and to try to
5518 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5519 there were so many of them they're just distractions, and UNCROSS is
5520 known to be able to handle the current sources
5521 * moved PROFILE functionality into TRACE, so that it will be clear
5522 how the wrapping and unwrapping of functions when you profile them
5523 interacts with the wrapping and unwrapping of functions when you
5524 trace them. (Actually, the functionality isn't there yet, but at least
5525 the interface specification is there. Hopefully, the functionality will
5526 arrive with some future maintenance release.)
5527 * removed host-oops.lisp
5528 * changed signature of QUIT function to allow UNIX-CODE argument
5529 * fixed READ-SEQUENCE bug
5530 * tweaked verbose GC output so that it looks more like the progress
5531 output that ANSI specifies for functions like LOAD
5532 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5533 * added <http://sbcl.sourceforge.com> to the banner information printed by