1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.34:
3 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
4 code for 32-bit and 64-bit rotations on x86-64.
5 * bug fix: TRUNCATE with a single single-float or double-float argument is
6 properly inlined when possible. (launchpad bug lp#489388)
7 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
8 no longer causes a compiler error on x86 and ppc.
9 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
10 always relative to *READTABLE* rather than the passed argument.
12 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
13 * minor incompatible change: threading support is now enabled by default
15 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
17 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
18 are now caught and reported just like errors during macroexpansion.
19 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
20 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
21 * enhancement: ASDF systems can now depends on SB-QUEUE.
22 * fixes and improvements related to Unicode and external formats:
23 ** bug fix: error handling and restart usage in the ucs-2 external format
25 ** there is now an implementation of the ucs-4 external format.
26 ** the utf-16 and utf-32 external formats are supported.
27 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
28 in the environment. setenv() and unsetenv() are also provided. (reported by
29 Fare Rideau; launchpad bug lp#460455)
30 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
31 loading. This ensures sensible errors for .FASL files from other
32 implementations on case-insensitive filesystems. (reported by Willem
33 Broekema; launchpad bug lp#489417)
34 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
35 Willem Broekema; launchpad bug lp#489698).
36 * bug fix: some minor code rearrangements to reenable warning-free building
37 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
38 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
40 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
43 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
44 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
45 * improvement: support O_LARGEFILE access to files larger than 2GB on
46 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
47 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
48 definitions for methods specializing on the passed class itself.
49 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
50 definitions for methods specializing on the passed class itself, or on
52 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
53 about itself during the build (e.g. for M-? in Slime), if this flag is
54 enabled in customize-target-features.lisp. This will increase the core
55 size by about 5-6mb, though, so it's mostly interesting to SBCL
57 * new feature: various GENCGC tuning parameters have been experimentally
58 documented and exported from SB-EXT. See documentation for details.
59 * fixes and improvements related to Unicode and external formats:
60 ** the Unicode character database has been upgraded to the
61 Unicode 5.2 standard, giving names and properties to a number of new
62 characters, and providing a few extra characters with case
64 ** improvement: restarts for providing replacement input/output on coding
65 errors for fd-stream external formats.
66 ** improvement: where :<encoding> is a keyword corresponding to an
67 external format the system supports, it is now possible to specify
68 (:<encoding> :replacement <character>) as an external format which will
69 automatically substitute <character> on encoding or decoding errors for
70 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
72 ** improvement: the file streams underlying the standard streams (such as
73 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
74 which uses the replacement mechanism to handle encoding errors,
75 preventing various infinite error chains and unrecoverable I/O
77 ** minor incompatible change: the utf-8 external format now correctly
78 refuses to encode Lisp characters in the surrogate range (char-codes
79 between #xd800 and #xdfff).
80 ** fix a typo preventing conversion of strings into octet vectors
81 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
83 ** fix a bug in the octet multibyte handling of decoding errors and the
84 USE-VALUE restart. (launchpad bug lp#314939)
85 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
86 restart on fd-stream decoding errors.
87 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
88 error is near the end of file.
89 ** fix a double-error case in unibyte octet conversions, when the first
90 use of USE-VALUE is ignored.
91 ** fix bugs in handling of undefined code points in unibyte encodings.
92 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
93 streams after an UNREAD-CHAR.
94 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
95 object is allocated in a boxed region of dynamic space.
96 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
97 fork with multiple Lisp threads running is made, instead of going
98 ahead with unpredictable consequences. (reported by Leslie Polzer)
99 * bug fix: uses of slot accessors on specialized method parameters within
100 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
101 error while finalizing the class. This fix may cause classes with slot
102 accessors to be finalized later than previously. (reported by Lars Rune
103 Nøstdal; launchpad bug lp#473699)
104 * bug fix: restore buildability on the MIPS platform. (regression from
105 1.0.30.38, reported by Samium Gromoff)
106 * bug fix: inspecting closures is less likely to fail with a type error.
107 * bug fix: no timer starvation when setting the system clock back.
108 (launchpad bug lp#460283)
109 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
110 standard pprint dispatch table as specified by CLHS.
111 * bug fix: give CLISP a hint about a type declaration to enable it to build
112 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
114 * bug fix: correctly dump literal objects in defaulting forms of arglists.
115 (reported by Attila Lendvai; launchpad bug lp#310132)
116 * bug fix: distinguish in type specifiers between arrays that might be
117 complex and arrays that are definitely complex. (launchpad bug lp#309129)
118 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
119 type. (reported by Levente Mészáros; launchpad bug lp#485972)
120 * bug fix: setting the value of a symbol-macro within a method in the
121 presence of type declarations works properly again. (reported by Iban
122 Hatchondo; launchpad bug lp#485019)
124 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
125 * optimization: faster FIND and POSITION on strings of unknown element type
126 in high SPEED policies. (thanks to Karol Swietlicki)
127 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
129 * improvement: better error signalling for bogus parameter specializer names
130 in DEFMETHOD forms (reported by Pluijzer)
131 * bug fix: DELETE-FILE once again works on logical pathnames (regression
133 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
135 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
136 removes previous default initargs (reported by Lars Rune Nøstdal and
138 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
139 lambda-lists. (reported by Peter Seibel)
140 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
141 correctly when starting from an executable core without saved runtime
142 options (reported by Faré Rideau, thanks to Zach Beane)
143 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
144 an optimization note instead. (reported by Martin Cracauer)
145 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
146 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
147 new process group if it doesn't need to share stdin with the sbcl
148 process. (thanks to Leslie Polzer)
149 * bug fix: SATISFIES could be misoptimized to refer to a local function.
150 (reported by Stanislaw Halik)
152 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
153 * improvement: stack allocation is should now be possible in all nested
154 inlining cases: failure to stack allocate when equivalent code is manually
155 open coded is now considered a bug.
156 * improvements related to Unicode:
157 ** the Unicode character database has been upgraded to the
158 Unicode 5.1 standard, giving names and properties to a number of new
159 characters, and providing a few extra characters with case
161 ** the system now recognizes and produces names for Unicode Hangul
163 ** the EBCDIC-US external-format is now supported for octet operations
164 (as well as for stream operations).
165 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
166 be used to output toplevel compile-time effects into a separate .CFASL
168 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
169 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
171 * optimization: TRUNCATE on known single- and double-floats is upto 25%
173 * optimization: division of floating point numbers by constants uses
174 multiplication by reciprocal when an exact reciprocal exists.
175 * optimization: multiplication of single- and double-floats floats by
176 constant two has been optimized.
177 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
178 sufficient type information is available. (thanks to Leslie Polzer)
179 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
180 known structure objects are as efficient as defstruct generated accessors.
181 * optimization: unused vector creation can now be optimized away.
182 * improvement: ASDF systems can now depends on SB-INTROSPECT.
183 * improvement: a STYLE-WARNING is signalled when a generic function
184 clobbers an earlier FTYPE proclamation.
185 * improvement: the compiler is able to track the effective type of
186 generic function across method addition and removal even in the
187 absence of an explicit DEFGENERIC.
188 * improvement: DESCRIBE now reports on symbols naming undefined
189 but assumed or declared function as well.
190 * improvement: recompilation of systems using SB-GROVEL now works
191 (thanks to Leslie Polzer)
192 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
193 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
195 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
196 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
197 well as user defined declaration names.
198 ** VARIABLE-INFORMATION is now aware of alien variables.
199 * improvement: improved address space layout on OpenBSD (thanks to Josh
201 * improvement: pretty-printing of various Lisp forms has been improved
202 (thanks to Tobias Rittweiler)
203 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
204 unused were deleted in safe code. (reported by John Fremlin)
205 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
207 * bug fix: some out-of-line array predicates were missing (reported by
209 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
211 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
212 (thanks to Larry D'Anna)
213 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
214 as well. (reported by Josh Elsasser)
215 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
216 leading to possible attempts to delete the same file twice. See docstring
217 on DELETE-FILE for details. (reported by John Fremlin)
218 * bug fix: DELETE-FILE once again deletes the file named by the pathname
219 designator argument, rather than its truename. (reported by Luis
221 * bug fix: the low-level debugger had 32-bit assumptions and was missing
222 information about some array types. (thanks to Luis Oliveira)
223 * bug fix: moderately complex combinations of inline expansions could
224 be miscompiled if the result was declared to be dynamic extent.
225 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
226 form (+ <variable> <integer>) were miscompiled under certain
228 * bug fix: in some cases no compiler note about failure to stack allocate
229 was emitted, even if the objects were in fact heap allocated.
230 * bug fix: minor violation of "otherwise inaccessible" rule for stack
231 allocation could cause objects users might reasonably expect to
232 be heap allocated to be stack allocated.
233 * bug fix: DESCRIBE signalled an error for generic functions under
234 certain circumstances. (thanks to Leslie Polzer)
235 * bug fix: Fixed spelling of an error message.
237 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
238 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
239 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
240 of SB-THREAD:THREAD-ERROR-THREAD.
241 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
242 * new feature: docstrings for local and anonymous functions are no longer
243 discarded. (thanks to Leslie Polzer)
244 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
245 values in other threads.
246 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
247 about object allocation.
248 * optimization: division of a real float by a complex float is implemented
249 with a specialised code sequence.
250 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
251 keywords is an order of magnitude faster.
252 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
253 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
254 methods, and similarly for non-standard metaclass classes as long as there
255 are no methods additional on MAKE-INSTANCE.
256 * optimization: more efficient type-checks for FIXNUMs when the value
257 is known to be a signed word on x86 and x86-64.
258 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
259 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
261 * optimization: compiler is smarter about delegating argument type checks to
263 * optimization: several character functions are now compiled somewhat more
264 efficiently. (reported by Lynn Quam)
265 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
266 * improvement: less unsafe constant folding in floating point arithmetic,
267 especially for mixed complex/real -float operations.
268 * optimization: constant double and single floats are stored in native
269 unboxed format on x86[-64].
270 * optimization: smarter code for arithmetic operations with constant floats,
271 complex floats, or integers on x86[-64].
272 * optimization: smarter code for conjugate/multiplication of float complexes
273 and abs/negate of floats on x86-64.
274 * optimization: more efficient complex float and real float operations on
276 * improvement: complex float division is slightly more stable.
277 * improvement: DESCRIBE output has been reworked to be easier to read and
278 contains more pertinent information.
279 * improvement: failure to provide requested stack allocation compiler notes
280 provided in all cases (requested stack allocation not happening without a
281 note being issued is now considered a bug.)
282 * bug fix: SB-POSIX exports the documented types and functions
283 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
284 types. (reported by "abhi")
285 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
286 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
287 (thanks to Paul Khuong)
288 * bug fix: looping around HANDLER-CASE could silently consume stack space
289 on each iteration. (reported by "foobar")
290 * bug fix: better error signalling when calls to functions seeking elements
291 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
292 (reported by Tobias Rittweiler)
293 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
294 directory components now works as it used to. (various prolems reported by
295 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
296 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
297 (reported by Elliot Slaughter, thanks to Stas Boukarev)
298 * bug fix: bogus undefined variable warnings from fopcompiled references to
299 global variables. (thanks to Lars Rune Nøstdal)
300 * bug fix: foreign function names should now appear in backtraces on
301 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
302 * bug fix: SETF compiler macro documentation strings are not discarded
304 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
305 (thanks to Alex Plotnick)
306 * bug fix: SLEEP accepts large integer arguments, truncating them to
307 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
308 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
309 * bug fix: compiler notes for expensive slot type checks could be emitted
310 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
312 changes in sbcl-1.0.29 relative to 1.0.28:
313 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
314 https://bugs.launchpad.net/sbcl
315 Bugs can be reported directly there, or by sending email to
316 sbcl-bugs@lists.sourceforge.net
317 (no subscription required.)
318 * minor incompatible change: under weak type checking policy integer
319 types are weakened less aggressively.
320 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
321 allowed to return, which causes SBCL to quit with exit status 0. Previously
322 if the function returned with a small integer return value, that value
323 was accidentally reused as the exit status.
324 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
325 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
326 :HASH-FUNCTION argument. Refer to user manual for details.
327 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
329 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
330 microseconds since the Unix epoch on all platforms.
331 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
332 allows the compiler to safely elide boundedness checks for special
334 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
335 the symbol, prohibits both lexical and dynamic binding. This is mainly an
336 efficiency measure for threaded platforms, but also valueable in
338 * new feature: UNC pathnames are now understood by the system on Windows.
339 * optimization: the compiler uses a specialized version of FILL when the
340 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
342 * optimization: accesses to potentially non-simple arrays where element type
343 is known are 50% faster.
344 * optimization: compiler now generates faster array typechecking code.
345 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
347 * optimization: multidimensional array accesses in the absence of type
348 information regarding array rank are approximately 10% faster due to
349 open coding of ARRAY-RANK.
350 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
351 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
353 * optimization: result of call to VECTOR can now be stack allocated.
354 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
355 as long as the resulting array is one-dimensional and has a known
356 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
357 length of the list matches the known length of the vector does not
358 allocate the list as an intermediate step. Ditto for VECTOR and simple
360 * optimization: MAKE-ARRAY can now stack allocate in the presence of
361 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
362 known element type, and is known to be simple and one dimensional.
363 * improvement: SBCL now emits a compiler note where stack allocation was
364 requested but could not be provided (not in all cases, unfortunately)
365 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
366 * improvement: pretty-printing loop has been implemented properly. (thanks
367 to Tobias Rittweiler)
368 * documentation: CLOS slot typechecing policy has been documented.
369 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
370 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
371 pointer, leading to memory faults. (thanks to Bart Botta)
372 * bug fix: better floating point exception handling on x86/OpenBSD.
373 (thanks to Josh Elsasser)
374 * bug fix: exit status from QUIT when called under --script was lost
375 (reported by Hubert Kauker)
376 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
377 same implementation of FILL to initialize the array, even if a more
378 efficient one was available (reported by Stas Boukarev, thanks to
380 * bug fix: potential miscompilation of array stack allocation on x86 and
381 x86-64. (reported by Time Tossavainen)
382 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
383 result in their subforms being treated as top level forms. (reported by
385 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
386 than a machine register could leave garbage in the high bits of the
387 result register (bug 316325).
388 * bug fix: disable address space randomization Linux/x86-64 as well,
389 not just x86-64. (reported by Ken Olum)
390 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
391 generate incorrect code.
392 * bug fix: #201; type inference for CONS and ARRAY types could derive
393 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
394 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
395 could not be assigned to or bound with PROGV. (reported by Lorenz
397 * bug fix: the value of CL:- in the inspector was the previous expression
398 evaluated rather than the expression being evaluated.
399 * bug fix: constants can no longer be locally declared special.
400 * bug fix: signals delivered to threads started from foreign land (read:
401 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
402 thread by blocking all signals and resignalling.
403 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
404 from :INITFORM, if any.
406 changes in sbcl-1.0.28 relative to 1.0.27:
407 * a number of bugs in cross-compilation have been fixed, with the ultimate
408 result that building under (at least) clisp should be much more reliable.
409 * minor incompatible changes: echo-streams now propagate unread-char to the
410 underlying input stream, and no longer permit unreading more than one
412 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
413 frames, allowing for instance more reliable backtraces.
414 * improvement: the debugger REPL can now reference lexical variables
415 by name directly for code compiled with (DEBUG 3).
416 * improvement: errors from malformed declarations now have better source
417 paths associated with them. (thanks to Tobias Rittweiler)
418 * optimization: faster local calls on x86/x86-64
419 * bug fix: some error messages for out-of-bound array indexes confused the
420 index and the bound. (thanks to Stas Boukarev)
421 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
423 * bug fix: running regressions tests in shells without OSTYPE set now works.
424 (reported by Harald Hanche-Olsen)
425 * bug fix: more robust static space exhaustion signalling from
426 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
427 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
428 docstring away instead of storing it under names such as (LAMBDA (X)).
429 (reported by Leslie Polzer)
430 * bug fix: timers could go off in the wrong order, be delayed indefinitely
431 (thanks to Ole Arndt for the patch)
432 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
433 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
434 potentially-invalid effective methods in its cache.
435 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
436 instances as well (thanks to Paul Khuong)
437 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
438 SB-POSIX:WAITPID and their C equivalents.
439 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
441 changes in sbcl-1.0.27 relative to 1.0.26:
442 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
443 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
444 * improvement: the system either recovers from stack exhaustion or dies
445 properly as opposed to leaving the user uncertain of whether the handler
446 trampled on some random memory next to the stack or having to rely on
447 --lose-on-corruption (which is still a good idea to use in production
448 because stack exhaustion can happen in signal handlers which will likely
450 * bug fix: fix gc related interrupt handling bug on ppc (regression from
451 1.0.25.37, reported by Harald Hanche-Olsen)
452 * bug fix: work around signal delivery bug in darwin (regression from
453 1.0.25.44, reported by Sidney Markowitz)
454 * bug fix: fix ERROR leaking memory (reported by David Thompson)
456 changes in sbcl-1.0.26 relative to 1.0.25:
457 * incompatible change: an interruption (be it a function passed to
458 INTERRUPT-THREAD or a timer function) runs in an environment where
459 interrupts can be enabled. The interruption can use
460 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
461 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
462 potentially running out of stack. Keep in mind that in the absence
463 of WITHOUT-INTERRUPTS some potentially blocking operation such as
464 acquiring a lock can enable interrupts.
465 * incompatible change: GC-OFF and GC-ON are removed, as they were
466 always unsafe. Use WITHOUT-GCING instead.
467 * new feature: runtime option --disable-ldb
468 * new feature: runtime option --lose-on-corruption to die at the
469 slightest hint of possibly non-recoverable errors: running out of
470 memory, stack, alien stack, binding stack, encountering a memory
471 fault, etc. In the absence of --lose-on-corruption a warning is
473 * enhancement: detect binding stack exhaustion
474 * enhancement: detect alien stack exhaustion on x86/x86-64
475 * improvement: generally more stable and reliable interrupt handling
476 * improvement: there is a per thread interruption queue,
477 interruptions are executed in order of arrival
478 * improvement: a repeating timer reschedules itself when the it has
479 finished, but expiration times are spaced equally. If an
480 expiration time is in the past it will trigger after a short grace
481 period that may give a chance to other things to run.
482 * optimization: slightly faster gc on multithreaded builds
483 * optimization: faster WITHOUT-GCING
484 * bug fix: when JOIN-THREAD signals an error, do it when not holding
485 important locks so that the debugger/handler doesn't produce
486 recursive errors or deadlock.
487 * bug fix: real-time signals are not used anymore, so no more
488 hanging when the system wide real-time signal queue gets full.
489 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
491 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
492 * bug fix: fix random memory faults related to interrupts on alpha
493 * bug fix: fix random memory faults related to interrupts on sparc
494 * bug fix: fix deadlocks related to starting threads
495 * bug fix: fix deadlines on locks on futex platforms
496 * bug fix: restore errno in signal handlers
497 * bug fix: fix deadlocks related to hash tables
498 * bug fix: fix deadlocks in pcl
500 changes in sbcl-1.0.25 relative to 1.0.24:
501 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
502 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
503 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
504 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
505 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
506 better name and does not return values so stale on multiprocessor systems.
507 Also, HOLDING-MUTEX-P was added for about the only sane usage of
509 * improvement: unithread builds keep track of MUTEX-VALUE.
510 * improvement: reading from a TWO-WAY-STREAM does not touch the output
511 stream anymore making it thread safe to have a concurrent reader and
512 a writer, for instance, in a pipe.
513 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
514 arguments, making compiler-macros for SETF-functions able to inspect
515 their constant arguments.
516 * improvement: COMPILE-FILE reports times with millisecond accuracy
517 (thanks to Luis Oliveira)
518 * optimization: CHAR-CODE type derivation has been improved, making
519 TYPEP elimination on subtypes of CHARACTER work better. (reported
520 by Tobias Rittweiler, patch by Paul Khuong)
521 * bug fix: setting alien structure fields of type struct by value now
522 computes the right offset for the memory copy.
523 * bug fix: compilation problem involving inlined calls to aliens with
524 result type VOID. (reported by Ken Olum)
525 * bug fix: #235a; sequential inline expasion in different policies no
526 longer reuses the functional from the previous expansion site.
527 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
528 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
529 * bug fix: named ENUMs in multiply-referenced alien record types no longer
530 cause an implied type redefinition. Regression from 1.0.21.29.
531 * bug fix: sign-extension of small signed return values now works with C
532 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
533 * improvements to the Windows port:
534 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
535 Westfold, thanks to Rudi Schlatte)
537 changes in sbcl-1.0.24 relative to 1.0.23:
538 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
539 vector of a multidimensional SIMPLE-ARRAY.
540 * new feature: the system now signals a continuable error if standard
541 readtable modification is attempted. (thanks to Tobias Rittweiler)
542 * new feature: DIRECTORY has been extended with a non-standard keyword
543 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
544 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
545 has been robustified and documented better. (thanks to Robert Goldman)
546 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
547 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
548 * tradeoff: constant FORMAT control strings are now compiled unless
549 SPACE > SPEED (previously only when SPEED > SPACE.)
550 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
552 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
554 * bug fix: lexical type declarations are now correctly reported by
555 SB-CLTL2. (reported by Larry D'Anna)
556 * bug fix: STRING-TO-OCTETS did not handle :START properly when
557 using UTF-8 as external format. (thanks to Luis Oliveira)
558 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
559 are signalled correctly. (thanks to Stas Boukarev)
560 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
561 designator. (thanks to Tobias Rittweiler)
562 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
563 designator, and returns T instead of the function. (thanks to
565 * bug fix: direct superclasses of STANDARD-CLASS and
566 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
567 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
568 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
569 when no class with the named slot yet exists no longer causes a
570 compile-time style-warning.
571 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
572 in safe code. (reported by Didier Verna)
573 * bug fix: #430; nested structure constructors can stack allocate.
574 * bug fix: on some 64-bit platforms dynamic space size was truncated
575 to #xffff0000 bytes. (reported by Benjamin Lambert)
576 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
577 REPL unusable. (reported by Daniel Herring)
578 * bug fix: return values of READ-SEQUENCE did not take :START into
579 account on file streams, regressions since 1.0.12.22. (reported by
580 Thomas Russ, patch by Paul Khuong)
581 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
582 method specializer used to confuse permuation vector optimization.
583 * bug fix: system inserted bogus implicit type declarations for local
584 special variables in DEFMETHOD bodies.
585 * bug fix: #354; duplicated frames in backtraces due to
586 non-tail-call-optimized XEPs to functions with return type NIL
588 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
589 initializes structure object slots according to DEFSTRUCT initforms,
590 and DEFSTRUCT forms :INCLUDEind structure classes defined using
591 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
592 (reported by Bruno Haible and Stephen Wilson)
593 * bug fix: #395; fill-pointer output streams used now support
594 element-type BASE-CHAR as well.
595 * bug fix: compiler error when attempting to derive return value of
596 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
598 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
600 * bug fix: Mac OS X binaries should now be portable between Leopard
603 changes in sbcl-1.0.23 relative to 1.0.22:
604 * enhancement: when disassembling method functions, disassembly
605 for the associated fast function is also produced.
606 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
608 * optimization: printing with *PRINT-PRETTY* true is now more
609 efficient as long as the object being printed doesn't require
610 special handling by the pretty printer.
611 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
612 now interact correctly with type declarations.
613 * partial bug fix: PCL detects infinite recursion during wrapper
614 validation. (thanks to Attila Lendvai)
615 * bug fix: #426; nested function calls are inlined properly.
616 Previously if FOO was an inline function, in calls of the form
617 (FOO (FOO ...)) the outer call was not inlined.
618 * bug fix: long long arguments passed in registers to alien
619 functions on PowerPC Linux and NetBSD are now handled correctly
620 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
622 changes in sbcl-1.0.22 relative to 1.0.21:
623 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
624 for the shared object in the current directory, but passes the native
625 namestring of the designated pathname to the operation system's shared
626 object loading function as-it.
627 * minor incompatible change: --disable-debugger toplevel option now takes
628 effect before processing of initialization files and --eval or --load
630 * new feature: new commandline argument: --script, which supports
631 shebang lines. See documentation for details. (based on work by
633 * new feature: SAVE-LISP-AND-DIE can save current values of
634 --dynamic-space-size and --control-stack-size in the executable core,
635 causing it to skip normal runtime option processing. See documentation
636 for details. (thanks to Zach Beane)
637 * enhancement: inoccous calls to EVAL or generic functions dispatching
638 on subclasses of eg. STREAM no longer cause compiler notes to appear.
639 * enhancement: the system no longer resignals errors from --load and
640 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
641 associated with the original error to be lost. (thanks to Ariel
643 * enhancement: :DONT-SAVE keyword argument has been added to
644 LOAD-SHARED-OBJECT for controlling interaction with
645 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
646 the effects of an earlier LOAD-SHARED-OBJECT call.
647 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
648 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
649 provided. (reported by Cedric St-Jean)
650 * bug fix: circularity handling in the reader did not treat raw
651 structure slots correctly. (reported by Cedric St-Jean)
652 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
653 file descriptors when there were none.
654 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
655 was broken. (reporteed by Willem Broekema)
656 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
657 pathnames without a directory.
658 * bug fix: COMPILE-FILE did not warn about undefined variable
659 references at toplevel, and LOAD of the resulting fasl did
661 * bug fix: functions with non-required arguments used to end up with
662 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
663 * bug fix: redefining a function with non-required arguments didn't
664 update the system's knowledge about its call signature properly.
665 * bug fix: fixed #431; incompatible alien record type redefinitions
666 are detected and handled. (reported by Neil Haven)
667 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
668 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
670 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
671 after alien stack frames.
672 * bug fix: strings passed to mk{s,d}temp lacked null termination
674 changes in sbcl-1.0.21 relative to 1.0.20:
675 * new feature: the compiler is able to track the effective type of a
676 generic function across method addition and removal.
677 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
678 appropriately typed structure slots without locking.
679 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
680 information like those gathered by TIME using a programming-friendly
682 * new feature: TIME reports time taken even if the form performs a
683 non-local transfer of control.
684 * enhancement: reduced conservativism on GENCGC platforms: on
685 average 45% less pages pinned (measured from SBCL self build).
686 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
687 mutate constant symbols or violate declaimed type of the symbol.
688 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
689 sleeping on the semaphore in heavily contested semaphores.
690 * bug fix: semaphores and condition variables were not interrupt
692 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
693 owned by other threads anymore.
694 * bug fix: FIND on lists called KEY outside the specified
695 subsequence. (reported by budden)
696 * bug fix: LOG doesn't use single-float intermediate results when
697 given mixed integer and double-float arguments, leading to better
698 precision. (reported by Bob Felts)
699 * bug fix: LOG with base zero returned values of inconsistent type.
701 changes in sbcl-1.0.20 relative to 1.0.19:
702 * minor incompatible change: OPTIMIZE qualities
703 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
704 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
705 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
706 * documentation: some slot access efficiency guidelines have been
707 added to the user manual.
708 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
709 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
710 as ASSOC and MEMEBER.
711 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
712 to more efficient EQ-comparison versions more often.
713 * optimization: enhanced derivation of DOLIST iteration variable type
715 * optimization: constant folding of simple (LIST ...) forms as DOLIST
717 * optimization: runtime lookup of function definitions can be
718 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
719 * optimization: compiler is able to derive the return type of
720 (AREF (THE STRING X) Y) as being CHARACTER.
721 * optimization: CLRHASH on empty hash-tables no longer does pointless
722 work. (thanks to Alec Berryman)
723 * optimization: REPLACE deftransforms don't punt when :START1 or
725 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
726 no longer emits a code deletion note. (reported by Andrew
728 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
729 functions with an odd number of &OPTIONAL arguments, a &REST
730 argument, and one or more &KEY arguments at the call site.
731 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
732 arguments appeared at call sites as well.
733 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
734 READ-LINE &co can no longer read from them afterwards. (reported
736 * bug fix: fixed #427: unused local aliens no longer cause compiler
737 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
739 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
740 alien-stack leakage. (reported by Andy Hefner)
741 * bug fix: PROGV signals an error when an attempt to violate declared
742 type of a variable or bind a constant is made.
743 * bug fix: SET signals an error when an attempt to violate declared
744 type of a variable is made.
745 * bug fix: restart computation during the execution of a restart
746 test function no longer causes infinite recursion. (reported by
748 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
749 signals an error. (thanks to Pierre Mai)
750 * bug fix: EXPORT left symbol unexported in conflict situations.
751 (thanks to Michael Weber)
752 * bug fix: correctly handle name conflicts involving CL:NIL.
753 (thanks to Michael Weber)
754 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
755 conflicts arising from USEing package with conflicting symbols
756 correctly. (thanks to Michael Weber)
758 changes in sbcl-1.0.19 relative to 1.0.18:
759 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
760 warnings that go otherwise unhandled will be muffled if they are
761 of the type that's the value of this variable.
762 * optimization: stack allocation is slightly more efficient on x86
764 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
765 where a raw slot always is initialized using the initform whose
766 type is not know sufficiently well a compile-time are now compiled
767 correctly. (reported by John Morrison)
768 * bug fix: compiler no longer makes erronous assumptions in the
769 presence of non-foldable SATISFIES types.
770 * bug fix: stack analysis missed cleanups of dynamic-extent
771 arguments in non-let-converted calls to local functions.
772 * improvements to the Windows port:
773 ** adjusted address spaces for building on both Win32 and
774 Win64. (thanks for John Connors)
775 * fixed some bugs revealed by Paul Dietz' test suite:
776 ** interval arithmetic during type derivation used inexact integer
777 to single-float coercions.
778 ** arithmetic operations involving large integers and single
779 floats give the same results in compiled and interpreted code.
780 ** deriving the result type of COERCE no longer signals an error
781 if the derived type of the second argument is a MEMBER type
782 containing invalid type specifiers.
783 ** ADJOIN with constant NIL as second argument works correctly.
784 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
786 changes in sbcl-1.0.18 relative to 1.0.17:
787 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
788 profiles only the current thread.
789 * minor incompatible change: changes to SYMBOL-VALUE of constants
790 defined with DEFCONSTANT now signal an error.
791 * enhancement: SB-SPROF now has support for wallclock profiling,
792 and is also able to profile specific threads. REPORT output
793 has also additional sorting options.
794 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
796 * optimization: structure allocation has been improved
797 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
798 ** out of line constructors are ~10% faster.
799 ** inline constructors are ~15% faster.
800 ** inline constructors are capable of dynamic extent allocation
801 (generally on x86 and x86-64, in some cases on other platforms
803 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
805 * optimization: file compiler is now able to coalesce non-circular
806 lists, non-base strings, and bit-vectors. Additionally, constants
807 are never referenced through SYMBOL-VALUE at runtime.
808 * optimization: code defining methods on PRINT-OBJECT (and other
809 generic functions in the COMMON-LISP package) now loads faster.
810 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
812 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
813 fasl is now deleted. (reported by Attila Lendvai)
814 * bug fix: READ-LINE always returned NIL for the last line in files.
815 (reported by Yoshinori Tahara)
816 * bug fix: more accurate disassembly annotations of foreign function
817 calls. (thanks to Andy Hefner)
818 * bug fix: trimming non-simple strings and non-string string
819 designators when the there is nothing to trim works properly.
820 (thanks to James Knight)
821 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
822 (thanks to Travis Cross)
823 * fixed some bugs revealed by Paul Dietz' test suite:
824 ** NIL is a valid function name (regression at 1.0.13.38)
825 ** FILL on lists was missing its return value (regression at 1.0.12.27)
826 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
827 fill pointers properly (regression at 1.0.12.23)
828 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
829 displacement indices properly (regression at 1.0.12.23)
831 changes in sbcl-1.0.17 relative to 1.0.16:
832 * temporary regression: user code can no longer allocate closure
833 variable storage on stack, due to bug 419 without explicitly
834 requesting it. Please consult sbcl-devel for advice if you need to
835 use this feature in the meanwhile.
836 * new feature: runtime argument --control-stack-size can be used to
837 adjust thread default control stack size.
838 * enhancement: improved TIME output
839 ** all times are reported using the measured accuracy (milliseconds
840 for real and GC times, microseconds for everything else.)
841 ** processor cycle counts on x86 and x86-64.
842 ** interpreted forms are counted for both evaluator modes.
843 ** number of lambdas converted by the compiler is reported.
844 ** CPU percentage report (computed from real and total run time.)
845 ** more comprehensive run time reporting, using a condenced format
846 ** interperted form, lambda, and page fault counts are omitted
848 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
850 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
851 * optimization: two argument forms of LAST are upto ~10% faster
852 in normal SPEED policies.
853 * optimization: NCONC no longer needs to heap cons its &REST list
854 in normal SPEED policies.
855 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
857 * bug fix: UNION and NUNION work with :TEST-NOT once more,
858 regression since 1.0.9.1. (thanks to Eric Marsden)
859 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
860 since 1.0.15.36. (thanks to Paul Khuong)
861 * bug fix: LAST when always returned the whole list when given a bignum
862 as the second argument.
863 * bug fix: dynamic extent allocation of nested lists and vectors
864 could leak to otherwise accessible parts.
865 * bug fix: invalid optimization of heap-allocated alien variable
867 * bug fix: fasl header checking is less vulnerable to different
868 platform word lengths.
869 * bug fix: more correct assembler syntax for GNU binutils
870 2.18.50.0.4 support. (thanks to Marijn Schouten)
871 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
873 * bug fix: the fopcompiler can handle LOCALLY forms (with no
874 declarations) successfully. (reported by Attila Lendvai)
876 changes in sbcl-1.0.16 relative to 1.0.15:
877 * minor incompatible change: revert the changes to sb-posix's error
878 signaling added in 1.0.14.
879 * minor incompatible change: change PROBE-FILE back to returning
880 NIL whenever we can't get a truename, as was the case before 1.0.14.
881 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
882 inherits from ERROR instead of just CONDITION.
883 * new feature: SB-INTROSPECT can provide source locations for instances
884 as well. (thanks to Tobias Rittweiler)
885 * optimization: binding special variables now generates smaller code
886 on threaded platforms.
887 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
888 and cases where no :TEST is given but the compiler can infer that
889 the element to search is of type (OR FIXNUM (NOT NUMBER)).
890 * optimization: better LOGNOT on fixnums.
891 * optimization: modular arithmetic for a particular requested width
892 is implemented using a tagged representation unless a better
893 representation is available.
894 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
895 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
896 for wellformedness and returns a specialized vector. (reported by
897 Francois-Rene Rideau)
898 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
899 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
900 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
901 unscheduling timer at the same time as another timer fires.
902 * bug fix: don't reschedule timers for dead threads.
903 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
904 * bug fix: copying output from RUN-PROGRAM to a stream signalled
905 bogus errors if select() was interrupted.
906 * enhancement: add support for fcntl's struct flock to SB-POSIX.
908 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
909 * enhancement: cleaner backtraces for interactive interrupts, as
910 well as other cases where the interesting frames used to be
911 obscured by interrupt handling frames.
912 * enhancement: untracing a whole package using (UNTRACE "FOO") is
913 now supported, and tracing a whole package using (TRACE "FOO") now
914 traces SETF-functions as well.
915 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
916 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
917 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
918 * unreadably printed representation of hash-tables now includes
920 * bug fix: partially fixed #188: type propagation from assignments
921 is now more efficient.
922 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
923 'DOUBLE-FLOAT) are not flushable.
924 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
925 full address of the object, and none of the tag bits.
926 * bug fix: readably printing hash-tables now respects other printer
927 control variables. (reported by Cedric St-Jean)
928 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
929 keyword with MAKE-HASH-TABLE.
930 * bug fix: export SB-POSIX:MKSTEMP.
931 * bug fix: SORT was not interrupt safe.
932 * bug fix: XREF accounts for the last node of each basic-block as
934 * bug fix: MAKE-INSTANCE optimizations interacted badly with
935 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
936 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
937 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
938 create obsolete instances in the case of redefinition or
939 obsoletion of a superclass. (thanks to Andy Hefner)
940 * bug fix: Support for the Alpha architecture has been revived; it had
941 suffered somewhat from lack of maintenance since sbcl-1.0.
942 * improvements to the Windows port:
943 ** The system detects the codepage to use at startup, instead of
944 using the value from the saved core. (thanks to Kei Suzuki)
946 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
947 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
948 (see documentation for details.)
949 * revived support for OpenBSD (contributed by Josh Elsasser)
950 * partially fixed bug #108: ROOM no longer suffers from occasional
951 (AVER (SAP= CURRENT END)) failures.
952 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
953 bodies no longer cause a WARNING to be signalled. (reported by
955 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
956 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
957 the bug in TRUNCATE.) (reported by Michael Weber)
958 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
959 no samples. (reported by Andy Hefner)
960 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
961 no longer appear as (NIL ...) frames in backtraces.
962 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
963 is now actually exported from SB-EXT as documented. (reported by
965 * bug fix: sb-aclrepl now correctly understands how to inspect
966 single-floats on 64-bit platforms where single-floats are not boxed.
967 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
968 yet been finalized. (reported by Levente Meszaros)
969 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
970 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
971 SBCL-specific optimize qualities.
973 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
974 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
975 an executable in the search path, and does so in the child
976 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
977 been removed; it can be found in the CVS history, for somebody who
978 needs that search behavior (see the manual).
979 * minor incompatible change: compiler policy re. weakening type
980 checks has changed: now type checks are weakened only if SAFETY < 2
982 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
983 unparsing of directory pathnames as files. Analogously,
984 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
985 filename to parse into a directory pathname.
986 * enhancement: implicit generic function creation now signals a
987 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
988 users can bind handlers for and muffle around calls to LOAD.
989 * enhancement: RUN-PROGRAM allows unicode arguments and environments
990 to be used (using the default stream external format), and allows
991 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
992 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
993 strings and vectors whose element-type or simplicity is not fully
994 known at compile-time.
995 * optimization: STRING-TRIM and related functions no longer allocate
996 a new string when no trimming needs to be performed. These functions
997 are also faster than before when the input string has been declared
999 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1000 * optimization: READ-LINE is significantly faster for files containing
1002 * optimization: non-open coded uses of character comparison operators
1003 (e.g. char=) no longer cons when called with more than one parameter
1004 on platforms supporting dynamic-extent allocation.
1005 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1006 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1007 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1009 * bug fix: some sequence functions elided bounds checking when
1011 * bug fix: too liberal weakening of union-type checks when SPEED >
1013 * bug fix: more bogus fixnum declarations in ROOM implementation
1016 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1017 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1018 :SYNCHRONIZED argument, which makes the hash-table safe for
1019 concurrent accesses (but not iteration.) See also:
1020 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1021 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1022 * optimization: CONCATENATE on strings is an order of magnitude faster
1023 in code compiled with (> SPEED SPACE).
1024 * optimization: SUBSEQ is ~50% faster on lists.
1025 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1026 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1027 END is smaller then START.
1028 * bug fix: SB-PROFILE will no longer report extra consing for nested
1029 calls to profiled functions.
1030 * bug fix: ROOM implementation had bogus fixnum declarations which
1031 could cause type-errors when calling ROOM on large images.
1032 * bug fix: if file compilation is aborted, the partial fasl is now
1033 deleted, and COMPILE-FILE returns NIL as the primary value.
1034 * bug fix: number of thread safety issues relating to SBCL's internal
1035 hash-table usage have been fixed.
1036 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1037 be returned from its body when the values were being returned
1038 using unknown-values return convection and the W-P-O was wrapped
1039 inside an UNWIND-PROTECT.
1040 * bug fix: sb-posix should now compile again under Windows, enabling
1041 slime to work again.
1043 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1044 * incompatible change: hash-table accessor functions are no longer
1045 automatically protected by locks. Concurrent accesses on the same hash-table
1046 from multiple threads can give inconsistent results or even corrupt the
1047 hash-table completely. Multi-threaded applications should do their own
1048 locking at the correct granularity. In the current implementation it is
1049 still safe to have multiple readers access the same table, but it's not
1050 guaranteed that this property will be maintained in future releases.
1051 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1052 and will signal an error at runtime.
1053 * enhancement: SB-THREAD package now exports a semaphore interface.
1054 * enhancement: CONS can now stack-allocate on x86 and
1055 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1057 * enhancement: nested lists can now be stack allocated on
1058 platforms providing stack allocation support.
1059 * enhancement: dynamic-extent support has been extended to support
1060 cases where there are multiple possible sources for the stack
1062 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1063 if the mutex is uncontested on Linux.
1064 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1065 as specified by the CLHS. (thanks to Tobias Rittweiler)
1066 * bug fix: NaN comparison now works on x86-64.
1067 * bug fix: CLOSE :ABORT T on a stream with pending output now
1069 * bug fix: instances of non-standard metaclasses using standard
1070 instance structure protocol sometimes missed the slot type checks
1072 * bug fix: known functions can be inlined in high-debug code.
1074 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1075 * minor incompatible change: the MSI installer on Windows no longer
1076 associates .lisp and .fasl files with the installed SBCL.
1077 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1078 on Windows. (thanks to Luis Oliviera)
1079 * new feature: SB-CLTL2 contrib module now implements
1080 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1081 * optimization: scavenging weak pointers is now more efficient,
1082 requiring O(1) instead of O(N) per weak pointer to identify
1083 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1084 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1085 method bodies using constant slot-names when the first argument is
1086 a specializer parameter for the method.
1087 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1088 names, when the class of the instance is a direct instance
1089 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1090 as slow as the constant slot-name case.)
1091 * optimization: member type construction is now O(N) instead
1093 * optimization: UNION and NUNION are now O(N+M) for large
1094 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1096 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1097 now more readable in environments like Slime which display it.
1098 (thanks to Tobias C. Rittweiler)
1099 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1100 was able to infer the correct argument type for the object on which
1101 the CAS operation was being performed.
1102 * bug fix: copy propagation interfered with parallel assignment
1103 semantics in local calls. (reported by Paul Khuong)
1104 * bug fix: the signed modular fixnum shift compiled to wrong code on
1105 x86 and x86-64. (spotted by a slight modification to some of
1108 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1109 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1110 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1111 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1113 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1114 and generic function now print the object identity for anonymous
1115 instances. (thanks to Attila Lendvai)
1116 * enhancement: as an extension to MOP, SBCL now supports SETF of
1117 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1118 (thanks to Attila Lendvai)
1119 * enhancement: sb-cover has an alternate annotation mode which puts
1120 the form annotations at the car of the form, instead of annotating
1121 it completely. The benefit of this mode is that it shows better
1122 which forms were instrumented by the compiler.
1123 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1124 by printer control variables. (reported by Dan Corkill)
1125 * bug fix: system leaked memory when delayed output was performed by
1126 the OS in smaller chunks then expected. (thanks to David Smith)
1127 * bug fix: system leaked memory when file streams were not closed
1129 * bug fix: large objects written to slow streams that were modified
1130 after the write could end up with the modified state written to
1131 the underlying file descriptor.
1132 * bug fix: multiple threads operating in parallel on the same stream
1133 could cause buffer-overflows.
1134 * bug fix: source location information is stored correctly
1135 (broken since 1.0.6). This bug would generally show up as the
1136 Slime debugger highlighting the wrong form when the sldb-show-source
1138 * bug fix: Branch forms are again annotated as branches in the sb-cover
1140 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1141 on x86-64. (reported by Gregory Vanuxem)
1142 * bug fix: EQUALP could return wrong results for structures with raw
1143 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1144 word). (reported by Vjacheslav Fyodorov)
1145 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1148 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1149 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1150 atomic compare-and-swap operations on threaded platforms.
1151 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1152 allows assigning a global minimum value to optimization qualities
1153 (overriding proclamations and declarations).
1154 * enhancement: closed over variables can be stack-allocated on x86
1156 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1158 * optimization: slot definition lookup is now O(1). This speeds up
1159 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1160 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1161 * optimization: ASSOC and MEMBER can now be open-coded for all
1162 combinations of keyword arguments when second argument is constant
1163 and SPEED >= SPACE. In other cases a specialized version is
1165 * bug fix: using obsoleted structure instances with TYPEP and
1166 generic functions now signals a sensible error.
1167 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1168 (reported by Kristoffer Kvello)
1169 * bug fix: backtrace construction is now more careful when making
1170 lisp-objects from pointers on the stack, to avoid creating bogus
1171 objects that can be seen by the GC.
1172 * bug fix: defaulting of values in contexts expecting more than 7
1173 variables now works on x86-64. (reported by Christopher Laux)
1174 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1176 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1177 as the property-list of a symbol.
1178 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1179 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1180 situations requested, are once again file-compileable. (reported
1183 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1184 * MOP improvement: support for user-defined subclasses of
1185 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1186 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1187 the expansion of DEFMETHOD, is responsible for generating a form
1188 which creates a list of specializers when evaluated. Additional
1189 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1190 debugging and introspective support.
1191 * minor incompatible change: the (unsupported) spinlock interface
1192 has changed: free spinlock now has the value NIL, and a held spinlock
1193 has the owning thread as its value.
1194 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1195 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1197 * enhancement: name of a socket-stream is now "a socket" instead of
1198 "a constant string".
1199 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1200 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1201 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1202 for generic functions. (Thanks to Tobias C. Rittweiler)
1203 * optimization: bignum printing speed has been improved by 20-40%
1204 (depending on the bignum size.)
1205 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1207 * bug fix: the cache used by the CLOS to store precomputed effective
1208 methods, slot offsets, and constant return values is now thread and
1210 * bug fix: generic function dispatch function updating is now thread
1211 and interrupt safe (in the sense that the known issues have been
1213 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1214 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1215 * bug fix: asdf systems with dependencies to the SB-POSIX or
1216 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1217 * bug fix: interrupt safety of applicable method computation has been
1220 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1221 * new contrib: sb-cover, an experimental code coverage tool, is included
1222 as a contrib module.
1223 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1224 significantly faster.
1225 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1226 produce more efficient code on x86-64 if the compiler can determine
1227 that (+ INDEX <constant>) does not require a bounds check and FOO
1228 has an element type at least 8 bits wide.
1229 * enhancement: a new, experimental synchronous timeout facility is
1230 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1231 * enhancement: when a symbol name conflict error arises, the
1232 conflicting symbols are always printed with a package prefix.
1233 (thanks to Kevin Reid)
1234 * enhancement: stepping is now once again supported on the SPARC and
1235 MIPS platforms. (It is also now more likely to work on CheneyGC
1237 * enhancement: sb-sprof can now also track and report accurate call
1239 * bug fixes: the treatment of non-standard subclasses of
1240 SB-MOP:SPECIALIZER is more correct.
1241 * incompatible change: PURIFY no longer copies the data from the
1242 dynamic space into the static and read-only spaces on platforms
1243 that use the generational garbage collector
1244 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1246 * bug fix: GC race condition occasionally resulting in crashes with
1247 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1249 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1251 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1252 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1253 * bug fix: an asynchronous interrupt could previously leave the
1254 system running with GC inhibited.
1255 * bug fix: a DECLARE form evaluated at top-level now causes an error
1256 rather than silently (or verbosely) returning NIL.
1257 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1258 result in a error being signalled due to source form lookup errors.
1259 (reported by Peter Graves)
1261 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1262 * incompatible change: removed writer methods for host-ent-name,
1263 host-ent-addresses -- changing the values did not update the DNS
1265 * minor incompatible change: changed experimental JOIN-THREAD interface
1266 * documentation: the manual now lists reader and writer methods
1267 in class slot documentation sections. (thanks to Richard M Kreuter)
1268 * documentation: unwinding from asyncronous events has been
1269 documented as unsafe.
1270 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1271 in multithreaded application code.
1272 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1273 platforms. (thanks to James Anderson for the optimization hint)
1274 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1276 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1277 variants no longer cons.
1278 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1279 their NOT- variants no longer cons.
1280 * optimization: EQUAL hash tables no longer use SXHASH for objects
1281 of all data types, but instead use an EQL hash for types for which
1282 EQUAL is the same as EQL.
1283 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1284 are significantly faster.
1285 * optimization: new STRING-OUTPUT-STREAM implementation is much
1286 faster for large outputs and conses 30% less on average.
1287 * enhancement: XREF information is now collected for references made
1288 to global variables using SYMBOL-VALUE and a constant argument.
1289 * enhancement: SIGINT now causes a specific condition
1290 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1291 * bug fix: FILE-POSITION used to signal an error in some cases where
1292 ANSI requires it to return NIL.
1293 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1294 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1295 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1297 * bug fix: bad type declaration in the CLOS implementation has
1298 been fixed. (reported by James Anderson)
1299 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1300 (thanks to Lutz Euler)
1301 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1302 required by the CLHS. (reported by Samium Gromoff)
1303 * bug fix: dead unbound variable references now signal an error.
1304 (reported by Marco Monteiro)
1305 * bug fix: / with an unused value was being deleted in safe code.
1306 (thanks to Marco Monteiro and Kevin Reid)
1307 * bug fix: number of characters that can be written onto a single
1308 line in a file is unlimited.
1309 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1310 been fixed by inhibiting interrupts for when GC is disabled.
1311 * bug fix: some interrupt safety issues with GETHASH, (SETF
1312 GETHASH), CLRHASH and REMHASH have been fixed.
1313 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1314 specifier no longer causes infinite recursion.
1315 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1316 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1317 * bug fix: an &environment argument with the correct variable information
1318 is passed to macros that are expanded during byte compilation.
1319 (reported by Samium Gromoff)
1320 * bug fix: a logic error was causing the hash function for bignums to
1321 have excessive amounts of collisions. (reported by Faré Rideau)
1322 * bug fix: modifying the contents of an array could change the return
1323 value of SXHASH on that array, which is only allowed for strings
1324 and bit vectors. (bug introduced in 0.9.16)
1325 * improvement: the x86-64/darwin port now passes all tests (except
1326 for the debugger tests) but should still be considered
1327 experimental until this is fixed.
1328 * improvement: a style-warning is signaled for CASE (etc) clauses with
1329 duplicate keys. (thanks to Kevin Reid)
1330 * improvement: macos/x86 and macos/x86-64 now use mach exception
1331 handlers for dealing with illegal instructions (for trapping and
1332 error handling) and memory protection violations (for GC).
1334 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1335 * new platform: experimental support for x86-64/darwin (MacOS).
1336 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1337 and getnameinfo sockets functions are used instead of gethostbyaddr
1338 and gethostbyname, on platforms where the newer functions are available.
1339 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1341 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1342 don't print the startup banner, but behave as if --noinform was passed
1343 as a command line argument. (thanks to Kevin Reid)
1344 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1345 * optimization: code using alien values with undeclared types is much faster.
1346 * optimization: the compiler is now able to open code SEARCH in more cases.
1347 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1348 * bug fix: using standardized COMMON-LISP special variables as loop
1349 variables no longer signals bogus package lock violations. (reported
1351 * bug fix: declaring local loop variables to be of a range-limited type
1352 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1353 (reported by Andras Simon)
1354 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1355 bugs remain on x86-64.)
1356 * bug fix: the #= and ## reader macros now interact reasonably with
1357 funcallable instances.
1358 * bug fix: type-checks for function arguments were compiled using the
1359 compiler policy settings of the wrong lexical environment (in 1.0.2
1361 * bug fix: SHADOW accepts characters as string designators, as required
1362 by the spec (thanks to Eric Marsden)
1363 * bug fix: fixed GC safety issues when foreign functions are called with
1364 non-base strings as arguments
1365 * bug fix: more consistent error output for fatal-compiler-warnings, like
1367 * bug fix: functions with proper names were showing up as NIL in
1368 backtraces (reported by Edi Weitz, regression in 1.0.2)
1370 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1371 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1372 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1373 produce more efficient code on the x86 if the compiler can determine
1374 that (+ INDEX <constant>) does not require a bounds check and FOO
1375 has an element type at least 8 bits wide.
1376 * bug fix: references to undefined variables are handled the same way
1377 in toplevel forms as in the normal compiler
1378 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1380 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1381 (thanks to Jon Buller)
1382 * improvement: faster compilation times for complex functions
1383 * improvement: added readlink support to SB-POSIX (thanks to Richard
1386 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1387 * improvement: experimental support for mach exception handling on
1388 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1390 * improvement: support for GBK external format.
1391 (thanks to Chun Tian (binghe))
1392 * improvement: the debugger now displays variables that have been closed
1393 over, in code compiled with (DEBUG 2) or higher
1394 * improvement: support for executable cores on NetBSD (thanks to
1396 * new feature: added a RESTART-FRAME debugger command
1397 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1398 be used to provide an implementation for FILE-POSITION on Gray streams
1399 (thanks to Eric Marsden)
1400 * new feature: add syslog, openlog and closelog support to SB-POSIX
1401 (thanks to Richard Kreuter)
1402 * optimization: the function call overhead in code compiled with
1403 a high DEBUG optimization setting is significantly
1404 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1405 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1406 (thanks to Tony Martinez)
1407 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1408 evaluated once (reported by Kevin Reid)
1409 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1410 works again (thanks to Kilian Sprotte)
1411 * bug fix: an error is signaled for tagbodies with duplicate tags
1412 (thanks to Stephen Wilson)
1413 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1414 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1415 stack frames from alien callbacks.
1416 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1417 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1418 65k pages (thanks to David Woodhouse)
1419 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1421 changes in sbcl-1.0.1 relative to sbcl-1.0:
1422 * new platform: FreeBSD/x86-64, including support for threading.
1423 * new feature: the compiler stores cross-referencing information
1424 about function calls (who-calls), macroexpansion (who-macroexpands)
1425 and special variables (who-binds, who-sets, who-references) for code
1426 compiled with (< SPACE 3). This information is available through the
1427 sb-introspect contrib.
1428 * new feature: users may subclass SEQUENCE, and have instances of
1429 these classes interoperate with standard Common Lisp functions if
1430 a number of methods are defined. (This feature is experimental
1431 and the interface subject to change based on feedback from SBCL
1432 users and the general community)
1433 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1434 x86/x86-64, rather than the previous fixed depth of 8
1435 * improvement: another pthread back-end of mutex "pthread-futex".
1436 * bug fix: non-ascii command-line arguments are processed correctly
1437 (thanks to Yaroslav Kavenchuk)
1438 * bug fix: non-required arguments were not passed correctly when a method
1439 defined using DEFMETHOD was called from a mop-generated method using
1440 CALL-NEXT-METHOD (reported by Pascal Costanza)
1441 * bug fix: recursion is now permitted in accessors through
1442 SLOT-UNBOUND. (reported by Pascal Costanza)
1443 * bug fix: an error was signaled at startup if the HOME environment
1444 variable was defined, but had an empty value (reported by Peter Van Eynde)
1445 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1446 signal a PROGRAM-ERROR, not a BUG.
1447 * bug fix: SB-POSIX:READDIR works when built with large file support.
1448 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1450 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1451 for better automatic indentation support. (thanks to Matt Pillsbury)
1452 * optimization: loading generic functions no longer takes O(n^2) time,
1453 proportional to the amount of methods in the generic function
1454 (reported by Todd Sabin and Jeremy Brown)
1455 * optimization: the FIND and POSITION family of sequence functions
1456 are significantly faster on arrays whose element types have been
1458 * improvements to the Windows port:
1459 ** Intermittent heap corruption problems have been fixed. (thanks
1460 to Alastair Bridgewater)
1461 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1463 ** Lisp is able to unwind foreign exception frames from alien
1464 callbacks. (thanks to Alastair Bridgewater)
1466 changes in sbcl-1.0 relative to sbcl-0.9.18:
1467 * improvement: experimental support for threading on FreeBSD/x86.
1468 (thanks to NIIMI Satoshi)
1469 * improvement: runtime option --dynamic-space-size can be used
1470 to set the size of the dynamic space reserved on startup.
1471 * improvement: floating point modes in effect are now saved in
1472 core, and restored on startup.
1473 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1474 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1475 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1476 threads are not running after *SAVE-HOOKS* have run.
1477 * improvement: writes to CLOS instance slots are type-checked in code
1478 compiled with (SAFETY 3)
1479 * improvement: floating-point exception handling on FreeBSD (thanks to
1481 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1482 (thanks to Zach Beane)
1483 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1485 * improvement: added support for the Shift-JIS external format.
1486 (contributed by NIIMI Satoshi)
1487 * improvement: callbacks are supported on Linux/PPC. (thanks to
1489 * bug fix: compiler bug triggered by a (non-standard) VALUES
1490 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1491 * bug fix: file compiler no longer confuses validated and already
1492 dumped structurres. (reported by Kaersten Poeck)
1493 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1494 fill-pointer signals a type-error as required. (thanks to
1496 * bug fix: disassemly of funcallable instances works.
1497 * bug fix: single stepping on PPC.
1498 * bug fix: fix thread-safety problems in the type system (generally
1499 manifesting as nonsensical errors like "STRING is a bad type specifier
1500 for sequences" or "The value 1 is not of type FIXNUM")
1501 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1502 (reported by Josip Gracin)
1503 * bug fix: an error is signaled for attempts to displace arrays with
1504 incompatible element types (thanks to Mario Mommer)
1505 * bug fix: more correct handling of wide characters in debug info
1506 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1507 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1508 and don't cause extra consing
1509 * optimization: MAP and MAP-INTO are significantly faster on vectors
1510 whose elements types have been declared.
1511 * Improvements to SB-SPROF:
1512 ** Support for allocation profiling
1513 ** Reduced profiling overhead, especially for long profiling runs
1514 * Improvements to the Windows port:
1515 ** floating point exceptions are now reported correctly.
1516 ** stack exhaustion detection works partially.
1517 ** more accurate GET-INTERNAL-REAL-TIME.
1518 ** better RUN-PROGRAM behaviour in case of errors in the child
1520 ** PROBE-FILE now simplifies pathnames correctly.
1521 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1522 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1523 1st 1970 (although time timezone data will be unreliable).
1524 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1526 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1527 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1528 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1530 * bug fix: two potential GC deadlocks affecting threaded builds.
1531 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1532 returns T (reported by Anton Kazennikov)
1533 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1534 with non-variable places
1535 * bug fix: remove a race condition in the setting of
1536 funcallable-instance functions, this should make threaded CLOS
1537 code more stable against memory faults.
1538 * bug fix: corruption of specials when unbinding is interrupted by an
1539 asynchronous unwind (reported by Hannu Koivisto)
1540 * improvement: the debugger will now also display local variables that
1541 are only used once, for code compiled with a DEBUG optimization quality
1544 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1545 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1546 * incompatible change: External-format support for FFI calls. The
1547 SB-ALIEN:C-STRING no longer implies an ASCII
1548 external-format. Instead the string is subject to external-format
1549 conversion. Additionally return values of type SB-ALIEN:C-STRING
1550 are by default of type (SIMPLE-ARRAY CHARACTER), not
1551 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1552 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1553 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1554 * incompatible change: SB-EXT package no longer contains the
1555 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1556 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1558 * incompatible change: the single-stepper is no longer available
1559 on Alpha, Mips and Sparc platforms.
1560 * minor incompatible change: the direct superclasses of
1561 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1562 not (STANDARD-OBJECT FUNCTION). This makes the
1563 class-precedence-lists of GENERIC-FUNCTION and
1564 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1566 * minor incompatible change: the default stream external format on
1567 non-unicode SBCL is no longer detected from the locale, but is always
1569 * new feature: Add a version of evaluator that uses an interpreter instead
1570 of the compiler. EVAL still uses the compiler by default, to switch it
1571 to use the interpreter, set the value of the variable
1572 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1573 * minor incompatible change: the single-stepper REPL has been merged
1574 with the normal debugger (see the "Stepping" heading of the debugger help
1575 for more details). The debugger command STEP will no longer switch
1576 to the single-stepper REPL.
1577 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1578 for a type now works.
1579 * bug fix: loading of default sysinit file works. (thanks to Leonid
1581 * bug fix: better detection of circularities in the file-compiler.
1582 (reported by Marco Monteiro)
1583 * bug fix: the CL pathname functions now work with files that have
1584 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1585 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1586 systems with Unix98 pty semantics.
1587 * bug fix: ASDF-INSTALL will now work with bsd tar.
1588 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1590 * bug fix: timers expiring in dead threads no longer cause a
1591 type-error (reported by Paul "Nonny Mouse").
1592 * bug fix: thanks to more lightweight single-stepper instrumentation,
1593 code compiled with (DEBUG 3) will compile and execute significantly faster,
1594 and will have more accurate type-inferencing than before
1595 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1596 whose bindings are modified
1597 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1598 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1599 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1600 CL:SOFTWARE-VERSION with proper version
1602 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1603 * feature: implemented the READER-METHOD-CLASS and
1604 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1605 as specified by AMOP.
1606 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1608 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1609 (thanks to Lutz Euler)
1610 * optimization: hashing of general arrays and vectors has been
1611 improved. (reported by Any Fingerhut)
1612 * enhancement: SB-INTROSPECT is now able to find definitions of
1613 profiled functions. (thanks to Troels Henriksen)
1614 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1615 as well, allowing compiler-macros for SETF-functions to expand.
1616 * enhancement: step-instrumentation no longer wraps known
1617 single-value functions with multiple-value context, allowing
1618 better type inference.
1619 * fixed bug #337: use of MAKE-METHOD in method combination now works
1620 even in the presence of user-defined method classes. (reported by
1621 Bruno Haible and Pascal Costanza)
1622 * fixed bug #339(c): if there are applicable methods not part of any
1623 long-form method-combination group, call INVALID-METHOD-ERROR.
1624 (reported by Bruno Haible)
1625 * fixed bug #361: the :FUNCTION initarg in the protocol for
1626 initialization of methods can now be used to override
1627 internally-produced optimized functions. (reported by Bruno
1629 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1630 system-provided lambda expression no longer cause warnings about
1631 unbound #:|pv-table| symbols.
1632 * bug fix: improved the handling of type declarations and the
1633 detection of violations for keyword arguments with non-constant
1635 * bug fix: potentially erronous calls to PATHNAME and
1636 MERGE-PATHNAMES were being flushed in some cases.
1637 (reported by Richard Kreuter)
1638 * bug fix: compiled calls to TYPEP were mishandling obsolete
1639 instances. (reported by James Bielman and Attila Lendvai)
1640 * bug fix: format strings with ~> without matching ~< no longer
1641 trigger an AVER, but signal an understandable error instead.
1642 (reported by Antonio Martinez)
1643 * bug fix: specifying an output-file without a pathname-type for
1644 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1645 of input-file instead of "fasl". (reported by Robert Dodier)
1646 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1647 (reported by James Y Knight).
1648 * bug fix: compiler-macros-function did not consider the environment
1649 argument for shadowing by local functions.
1650 * bug fix: compiler-macros expansion was inhibited by local INLINE
1652 * bug fix: inline expansions of known functions were subject to
1653 step-instrumentation in high debug policies, leading to problems
1654 with type-inference.
1655 * bug fix: compiler failed to differentiate between different CONS
1656 types in some cases.
1657 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1658 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1659 * bug fix: #368: incorrect use of expressed vs. upgraded array
1661 * bug fix: #306a: more precise unions of array types.
1662 * thread-safety improvements:
1663 ** CONDITION-WAIT could return early on Linux, if the thread was
1664 interrupted and subsequently continued with SIGCONT.
1665 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1667 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1668 * added support for the ucs-2 external format. (contributed by Ivan
1670 * minor incompatible change: pretty printing of objects of type
1671 (cons symbol) is, in the default pprint-dispatch-table, now
1672 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1674 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1675 called later in a class's lifetime, possibly as late as when the
1676 first instance of the class is created. Previously,
1677 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1678 class became finalizeable.
1679 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1680 for multibyte external-format streams. (thanks to "vbzoli")
1681 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1682 with :ALLOCATION :CLASS inherited from superclasses of the
1684 * fixed bug: anonymous classes can now be created using the :NAME
1685 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1686 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1687 * fixed bug: core-files saved with :EXECUTABLE T can again be
1688 executed when SBCL_HOME isn't set. (reported by James Knight)
1689 * fixed bug: toplevel LOCALLY forms with declarations could
1690 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1691 * fixed bug: printing from several different threads using different
1692 values of *print-case* could cause invalid output, due to
1693 some internal special variables of the printer not being bound
1694 thread-locally (reported by Max Mikhanosha)
1695 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1696 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1697 (reported by Pascal Costanza)
1698 * fixed bug: FINALIZE-INHERITANCE is called from
1699 REINITIALIZE-INSTANCE on classes when the class has previously
1700 been finalized, as required by AMOP.
1701 * minor code generation optimizations:
1702 ** better register allocation in CLOS dispatching functions
1703 ** overflow detection when coercing signed bytes to fixnums on x86-64
1704 ** is now implemented with one IMUL instruction instead of three shifts
1705 ** more efficient bit-vector access on x86 and x86-64
1706 ** more efficient access to raw structure slots on x86 and x86-64
1707 * fixed some bugs revealed by Paul Dietz' test suite:
1708 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1709 return its argument.
1711 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1712 * feature: thread support on Solaris/x86, and experimental thread support
1714 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1716 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1717 default method for SLOT-UNBOUND.
1718 * minor incompatible change: prevent the user from specializing the
1719 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1720 somewhat counter to the intent of the protocol, I (CSR) think, and
1721 additionally it just doesn't work in SBCL as currently
1722 implemented, thanks to optimizations (that are always valid for
1723 the other three SLOT-VALUEish functions, but not for the setter).
1724 * minor incompatible change: the :SB-LDB feature is now enabled by
1725 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1726 the low-level debugger.
1727 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1728 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1729 down to an SB-SYS:FD-STREAM, allowing direct communication in
1730 more cases. Temporary files and pipes are still used as a fallback
1732 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1733 on the non-reentrant C functions localtime(3) and gmtime(3).
1734 * bug fix: global optimization policy was not visible in LOCALLY and
1736 * bug fix: class objects can be used as specializers in methods.
1737 (reported by Pascal Costanza)
1738 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1739 with a type error. (reported by blitz_ on #lisp)
1740 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1741 failed with a type error. (reported by Pascal Bourguignon)
1742 * bug fix: merging pathnames against defaults with :DIRECTORY
1743 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1744 (reported by James Y Knight)
1745 * bug fix: saving large (>2GB) cores on x86-64 now works
1746 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1747 constant index and a (simple-array (signed-byte 32)) array
1748 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1749 error (patch by Robert J. Macomber)
1750 * feature: TIME now displays the amount of run-time spent in GC
1751 * bug fix: The debugger now does a better job of respecting
1752 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1753 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1754 workaround for bug 403.)
1755 * bug fix: floating point exception handling now works on FreeBSD
1756 (thanks to NIIMI Satoshi)
1757 * fixed some bugs revealed by Paul Dietz' test suite:
1758 ** MISC.641: LET-conversion were not supposed to work in late
1760 * improvements to the Win32/x86 port:
1761 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1762 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1764 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1765 * new feature: source path information is generated for macro-expansion
1766 errors for use in IDE's like Slime (thanks to Helmut Eller)
1767 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1768 * bug fix: compiler does not loop forever on an invalid type in
1770 * improvement: compilation of most CLOS applications is significantly
1772 * optimization: added a limited bytecode compiler for simple toplevel
1773 forms, speeding up compilation and FASL loading
1774 * bug fix: the statistical profiler now properly distinguishes anonymous
1777 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1778 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1779 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1780 into subclasses of the finalized class. Now user calls to
1781 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1782 system return before any subclasses are finalized.
1783 * minor incompatible change: The reader no longer ignores errors
1784 regarding non-existent packages in #+ and #- feature tests.
1785 * new feature: command line options --no-sysinit, --no-userinit to
1786 inhibit loading the corresponding init files
1787 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1788 for sending data through UDP sockets (thanks to François-René Rideau)
1789 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1790 error is signalled instead (thanks to François-René Rideau)
1791 * minor incompatible change: Error signalling behaviour of lexical
1792 operations violating package locks has changed slightly. Refer to
1793 documentation on package locks for details.
1794 * enhancement: EVAL can process IF-expressions without resorting to the
1796 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1797 constant-folded properly due to missing out-of-line functions.
1798 (reported by Mika Pihlajamäki)
1799 * bug fix: LISTEN sometimes returned T even in cases where no data was
1800 immediately available from the stream
1801 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1802 were reversed. (reported by Levente Mészáros)
1803 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1804 when given a vector displaced to an adjustable array. (reported
1806 * bug fix: derivation of float boundaries from numbers outside the
1807 appropriate float range (reported by John Wiseman)
1808 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1810 * bug fix: precomputing cache entries for generic functions with
1811 some subclasses of specializers as yet invalid does not attempt to
1812 fill a cache line with a negative offset. (reported by Levente
1814 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1815 allow condition class objects as arguments to DOCUMENTATION and
1816 (SETF DOCUMENTATION); only find and set documentation for
1817 structure names for the STRUCTURE doc-type. (suggested by Gary
1819 * improvements to the Win32/x86 port:
1820 ** (user-homedir-pathname) and default initialization file
1821 locations now know about the user's "Documents and Settings"
1822 directory (thanks to Yaroslav Kavenchuk)
1823 ** run-program is implemented (thanks to Mike Thomas)
1824 ** sockets support (thanks to Timothy Ritchey)
1825 ** better backtrace support (thanks to Alastair Bridgewater)
1826 ** sb-grovel supported
1827 ** asdf-install and sb-posix work somewhat
1828 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1829 * improvements to the Solaris/x86 port:
1830 ** works on Solaris 11/Solaris Express
1831 ** floating-point exception handling support
1832 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1833 * fixed some bugs revealed by Paul Dietz' test suite:
1834 ** REMOVE-METHOD returns its generic function argument even when
1835 the method is not one of the generic functions' methods.
1836 ** objects declared as MEMBER types can be admissible arguments to
1837 structure accessors.
1838 ** printing characters should simply be printed by the FORMAT ~:C
1840 ** compiler failure when compiling functions with hairy constant
1841 defaults for optional parameters.
1842 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1843 function, which is already optimized.
1845 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1846 * new platform: experimental support for SBCL x86/Darwin, including
1847 MacOS X 10.4.5 on Intel.
1848 * new feature: Unicode character names are now known to the system
1849 (through CHAR-NAME and NAME-CHAR).
1850 * new feature: the filesystem location of SBCL's core file is
1851 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1852 * minor incompatible change: the contrib modules SB-POSIX and
1853 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1854 this change is to make it easier to distribute
1855 location-independent binaries.
1856 * bug fix: as implied by AMOP, standardized classes no longer have
1857 slots named by external symbols of public packages. (reported by
1859 * optimization: calling functions via constant symbols -- as in
1860 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1861 via the function object as in (FUNCALL #'FOO).
1862 * optimization: on x86 and x86-64, the calling convention for the
1863 case of dealing with an unknown number of values has been altered
1864 to be friendlier to the prediction heuristics implemented,
1865 particularly with reference to CALL and RET pairing. (thanks to
1866 Alastair Bridgewater)
1867 * optimization: on x86, the code for access to thread-local symbol
1868 values and binding/unbinding of thread-local symbols is smaller.
1869 (thanks to Alastair Bridgewater)
1870 * enhancement: CONSTANTP is now able to determine constantness of
1871 more complex forms, including calls to constant-foldable standardized
1872 functions and some special forms beyond QUOTE.
1873 * fixed bug: occasional GC crashes on Solaris/x86
1874 * optimization: x86-64 supports stack allocation of results of simple
1875 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1876 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1877 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1878 (thanks to James Knight)
1879 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1880 by the standard (thanks to Stephen Compall)
1882 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1883 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1884 be used for bundling the runtime and the core file into one
1885 executable binary. This feature is not currently supported on all SBCL
1886 platforms. (thanks to James Bielman and NIIMI Satoshi)
1887 * new feature: a generational or ephemeral garbage collector is now
1888 the default on the PowerPC platform (both Linux and Darwin). The
1889 old Cheney (stop and copy) collector is a build-time option.
1890 (thanks to Cyrus Harmon, after Raymond Toy)
1891 * minor incompatible change: the method by which SBCL finds its
1892 contributed modules has changed; it no longer relies on symbolic
1893 links from an $SBCL_HOME/systems directory, but searches directly
1894 in the subdirectories of $SBCL_HOME.
1895 * enhancement: the dynamic heap size on the Linux/PPC platform is
1896 markedly larger, even using the older Cheney garbage collector.
1897 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1898 certain complicated string types. (reported by Gary King)
1899 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1900 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1901 * fixed bug: DOCUMENTATION on structures no longer signals an
1902 error if no structure type of the right name exists. (reported by
1904 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1905 applicable non-standard primary or :AROUND method on
1906 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1907 no longer cause unbound variable errors. (reported by Kevin Reid)
1908 * fixed bug: metacircle resolution in cases where methods have slots
1909 added before the slots from STANDARD-METHOD. (reported by Jean
1911 * fixed bug: the Power PC assembly code for calling into lisp
1912 sometimes computed its return address wrongly (depending on the
1913 15th bit of the address, fixed at link time). This used to
1914 manifest itself in a segmentation violation while building PCL.
1915 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1916 many others over the years)
1917 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1918 the stack pointer (treated as a signed integer) is negative.
1919 (thanks to Peter van Eynde)
1921 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1922 * new platform: experimental support for the Windows operating
1923 system has been added. (thanks to Alastair Bridgewater)
1924 * fixed several bugs in and robustified the PPC FFI (including
1925 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1926 * bug fix: allow non-simple string symbol names (reported by Paul
1928 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1930 * bug fix: saving a core corrupted callbacks on x86/x86-64
1931 * bug fix: closed a loophole in metacircularity detection and
1932 grounding in the PCL implementation of CLOS.
1933 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1934 (reported by tomppa on #lisp)
1935 * bug fix: clear the direction flag on Lisp -> C transitions, as
1936 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1937 (reported by Andrej Grozin and Hendrik Maryns)
1938 * optimization: major improvements to GC efficiency on GENCGC platforms
1939 * optimization: faster implementation of EQUAL
1940 * optimization: emit more efficient opcodes for some common
1941 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1942 * optimization: several other minor code-generation improvements on x86-64
1943 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1945 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1946 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1947 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1948 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1949 by ANSI as a generic function, and for consistency (SETF
1950 GENERIC-FUNCTION-NAME) is treated likewise.
1951 * fixed bug #233.b: make constraint propagation notice when a variable
1952 value is changed after it is referenced but before it is used
1953 * fixed bug #296: no more arbitrary behaviour from filenames with
1954 odd characters as --load arguments. (reported by Adam Warner)
1955 * fixed bug #390: :CHARACTER-SET pathname components now work as
1956 expected. (reported by Tim Daly Jr)
1957 * fixed bug #391: complicated :TYPE intersections in slot
1958 definitions no longer cause an error in PCL internals.
1959 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1960 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1961 returning the number of octets which would be written to the
1962 file-stream. (thanks to Robert J. Macomber)
1963 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1964 arguments to the internal stream functions. (thanks to David
1966 * bug fix: stack exhaustion is now handled on the x86/SunOS
1967 platform. (thanks to Daisuke Homma)
1968 * bug fix: more accurate ROOM results on GENCGC platforms
1969 * optimization: improved type inference for arithmetic-for
1970 index variables in LOOP
1971 * optimization: faster floating-point SQRT on x86-64
1972 * fixed some bugs revealed by Paul Dietz' test suite:
1973 ** DOCUMENTATION returns NIL instead of "" for method combinations
1974 that don't have a docstring
1976 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1977 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1978 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1979 therefore are not customizeable by user code (as seems to be at
1980 least permitted and maybe required by AMOP). As a consolation,
1981 however, the SBCL implementation of these functions now calls
1982 REINITIALIZE-INSTANCE as specified by AMOP.
1983 * bug fix: slot-definition documentation is propagated as per ANSI
1984 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1985 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1986 argument, as do eslotd initialization methods. (from Pascal
1987 Costanza's "Closer" project)
1988 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1989 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1991 * bug fix: it is now possible to have more than one subclass of
1992 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1993 (reported by Bruno Haible, Pascal Costanza and others)
1994 * bug fix: the dependent update protocol now works for generic
1995 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1996 and Pascal Costanza)
1997 * bug fix: condition-class instances corresponding to
1998 DEFINE-CONDITION forms are now created eagerly. (reported by
1999 Kalle Olavi Niemitalo on comp.lang.lisp)
2000 * bug fix: floating point printing is more accurate in some
2001 circumstances. (thanks to Simon Alexander)
2002 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2003 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2004 * bug fix: callbacks on OS X now preserve stack-alignment.
2005 (thanks to Cyrus Harmon)
2006 * enhancement: the x86-64 disassembler is much better at
2007 disassembling SSE instructions. (thanks to Lutz Euler)
2008 * enhancement: CHECK-TYPE on a variable now allows type-inference
2009 (thanks to Vincent Arkesteijn)
2010 * optimization: improved performance of EUC-JP external format.
2011 (thanks to NIIMI Satoshi)
2012 * optimization: performance improvements to IO on file streams of
2013 :ELEMENT-TYPE CHARACTER
2014 * optimization: much faster memory allocation on x86-64
2015 * optimization: faster garbage collections (latency and throughput)
2017 * optimization: faster bignum subtraction and division on x86 and x86-64
2018 (thanks to Lutz Euler)
2019 * optimization: more accurate type-inference for loops that use a
2020 floating point index variable or a negative step.
2022 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2023 * bug fix: add a workaround to SBCL looping infinitely at startup on
2024 Linux kernels with apparently buggy implementations of personality().
2025 (thanks to Svein Ove Aas)
2026 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2027 (thanks to David Lichteblau)
2028 * bug fix: local bindings shadow global symbol macros for
2029 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2030 * optimization: non-open coded uses of numeric comparison operators
2031 (e.g. >) no longer cons when called with more than one parameter
2032 on platforms supporting dynamic-extent allocation.
2033 * enhancement: saving cores with foreign code loaded is now supported
2034 on MIPS/Linux in addition to the previously supported platforms.
2035 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2036 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2037 * bug fix: division by zero in sb-sprof when no samples were collected
2038 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2039 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2040 (thanks to Alexander Kjeldaas)
2041 * new feature: ignoring the return values of destructive functions
2042 like NREVERSE signals a compile-time style-warning.
2043 (thanks to Kevin Reid)
2044 * new feature: the alignment of alien structure fields can be
2045 explicitly specified. (thanks to Cyrus Harmon)
2046 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2047 and dump core on SIGQUIT
2049 ** incompatible change: threads do not inherit values of specials
2050 from their parents (see manual)
2051 ** bug fix: threads stacks belonging to dead threads are freed by the
2052 next exiting thread, no need to gc to collect thread stacks anymore
2053 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2054 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2055 ** bug fix: dynamic variable and thread start related gc lossage
2056 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2058 * fixed some bugs revealed by Paul Dietz' test suite:
2059 ** SUBTYPEP is slightly more accurate on heinously complicated
2060 CONS types where some of the members have uncertain (in the
2061 NIL, NIL sense) type relationships to each other.
2063 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2064 no longer purified unless :PURIFY T is explicitly specified.
2065 ** Non-purified cores are significantly smaller than before
2067 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2068 * new feature: timers based on Zach Beane's excellent timer package
2069 * added support for the following external formats: koi8-u,
2070 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2071 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2072 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2073 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2074 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2075 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2076 * incompatible change: a threaded SBCL will no longer revert to
2077 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2078 * bug fix: interrupts are disabled until startup is complete; no
2079 more sigsegvs when receiving a signal to soon
2080 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2082 * bug fix: add a workaround for the memory randomization features in
2083 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2084 workaround will only be in effect on systems with the proc filesystem
2086 * bug fix: printing objects of type HASH-TABLE signals a
2087 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2089 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2090 have been running for over 50 days. (reported by Gilbert Baumann)
2091 * bug fix: the logic for getting names of functions gets less
2092 confused when confronded with alternate-metaclass
2093 funcallable-instances. (reported by Cyrus Harmon)
2094 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2095 consistent, even on internal alternate-metaclass objects.
2096 * bug fix: flush closure information collected by physical
2097 environment analysis prepass before the main pass. (bug reported
2099 * bug fix: compiler pack phase does not modify a hashtable, which is
2100 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2101 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2102 may be expanded. (reported by Alexander <malishev> on c.l.l)
2103 * bug fix: no more style-warnings when compiling code using LAST
2104 under high-SPEED low-SPACE settings. (reported by David Wallin
2106 * fixed some incompatibilities between SBCL's MOP and the MOP
2108 ** the METAOBJECT class is now implemented;
2109 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2110 STANDARD-OBJECT, as required;
2111 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2112 now compatible (as required by VALIDATE-SUPERCLASS); there
2113 remains a consistency requirement over the presence or absence
2114 of the FUNCTION class in the superclass list of finalized
2115 classes; see the manual for more details;
2116 ** the :AROUND method for COMPUTE-SLOTS on
2117 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2118 requested slot ordering.
2120 ** bug fix: parent thread now can be gc'ed even with a live
2122 ** bug fix: binding a special with PROGV to no value is not
2123 the same as that symbol not having been bound (thanks to
2125 ** bug fix: binding specials is thread safe (thanks to
2127 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2128 and SB-SPROF do not die with 'no handler for signal XX in
2129 interrupt_handle_now(..)' anymore
2130 ** bug fix: WITH-TIMEOUT works with multiple running threads
2131 * fixed some bugs revealed by Paul Dietz' test suite:
2132 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2133 the :method-class keyword argument.
2135 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2136 * new port: the Solaris operating system on x86 processors is now
2137 mostly supported, though some rough edges in the environment
2138 remain. (thanks to Daisuke Homma)
2139 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2140 space for its heap. (thanks to Thiemo Seufer)
2141 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2142 closures. (thanks to Thiemo Seufer)
2143 * minor incompatible change: eof selects abort in the debugger.
2144 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2145 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2147 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2148 deprecated, and will go away in a future revision of SBCL.
2149 * minor incompatible change: GC-ON and GC-OFF are no longer
2150 implemented with a counter, it does not matter how many times gc
2151 is switched on or off
2152 * bug fix: discriminating functions for generic function classes
2153 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2154 make invalid assumptions about method precedence order. (reported
2156 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2157 platforms. (thanks to Thiemo Seufer)
2158 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2159 * bug fix: correct pathname printing with printer escaping is on.
2160 (thanks to Kevin Reid)
2161 * bug fix: complex VOP definitions in "user-space" no longer trigger
2162 package locks. (reported by Zach Beane)
2163 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2164 for funcallable-instance functions, and is no different from
2166 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2167 characters in the current readtable. (reported by Nicholas Neuss)
2168 * bug fix: SUBTYPEP on various CONS types returns more a more
2169 accurate acknowledgment of its certainty.
2170 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2171 lists in some cases. This partially fixes bug 384.
2172 * flush all standard streams before prompting in the REPL and the
2174 * bug fix: signal handling and triggering gc do not conflict
2175 directly anymore, in particular a high frequency sb-sprof does
2176 not prevent gc from running
2177 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2178 approximation for timezone and DST information between the
2179 universal time epoch and the smallest negative 32-bit time_t.
2180 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2181 year 1899 so long as the encoded time is non-negative.
2182 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2183 the correct answer for non-constant rotate amounts when performing
2184 an inline 32-bit rotation.
2186 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2187 there is only one thread in the session
2188 ** bug fix: memory leak for streams created in one thread and
2189 written to in another
2190 ** bug fix: lockup when compiled with gcc4
2191 ** bug fix: race that allows the gc to be triggered when gc is
2193 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2194 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2196 ** bug fix: finished threads are gc'ed properly
2197 * fixed some bugs revealed by Paul Dietz' test suite:
2198 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2199 has arguments with a different set of applicable methods from
2200 the orignal arguments.
2201 ** The type error thrown by MAP now has a correct expected-type
2203 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2204 name a compiled function.
2205 ** Three MISC tests where a large bignum was improperly coerced to
2206 a float that couldn't represent that bignum during type
2207 derivation were fixed.
2208 ** SUBTYPEP can now handle types involving the negation of a
2209 list-form FUNCTION type.
2210 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2211 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2212 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2214 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2215 * New feature: Experimental support for bivalent streams: streams
2216 opened with :element-type :default now allow character and binary
2217 (unsigned-byte 8) I/O
2218 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2219 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2221 * bug fix: no more highly sporadic "couldn't check whether ~S is
2222 readable" when reading a stream and an interrupt hits in the middle
2223 of a select system call
2224 * compiler better recognizes complex arrays (reported by Eduardo
2226 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2227 for variables on SBCL built with linkage-tables. (reported by Luis
2229 * various error reporting improvements.
2230 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2231 (Thanks to Thiemo Seufer)
2232 * bug fix: nested reader invokations work correctly
2233 * bug fix: it is possible to have simultaneous references to foreign
2234 code and foreign data with the same name.
2236 ** added x86-64 support
2237 ** incompatible change: the threading api now works with thread
2238 objects instead of thread ids
2239 ** bug fix: threads are protected from signals and interruption when
2240 starting up or going down
2241 ** bug fix: a race where an exiting thread could lose its stack to gc
2242 ** bug fix: don't halt on infinite error in threads if possible
2243 ** fixed numerous gc deadlocks introduced in the pthread merge
2244 ** bug fix: fixed thread safety issues in read and print
2245 ** bug fix: debugger doesn't hang on session lock if interrupted at
2246 an inappropriate moment
2247 ** bug fix: run-program is now thread safe(r)
2248 ** bug fix: inner with-recursive-lock no longer releases the mutex
2249 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2250 * fixed some bugs revealed by Paul Dietz' test suite:
2251 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2252 EXPECTED-TYPE slots filled.
2253 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2255 ** MAKE-CONDITION accepts classes as type-designators.
2256 ** COMPILE may never return NIL.
2257 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2258 range before calling Unix time functions
2260 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2261 * numerous signal handling fixes to increase stability
2262 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2263 * minor incompatible change: we now correctly canonize default
2264 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2265 as per the MOP, rather than the historical (INITARG INITFUNCTION
2266 INITFORM). (reported by Bruno Haible)
2267 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2268 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2269 for more information.
2270 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2271 pathname is a directory pathname.
2272 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2273 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2275 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2276 :METACLASS argument in addition to a class name. (reported by
2277 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2278 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2279 (reported by Bruno Haible; patch from Gerd Moellmann)
2280 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2282 * bug fix: more cleanups to the floating point exception handling on
2283 x86-64 (thanks to James Knight)
2284 * bug fix: the compiler does not try to constant fold calls of
2285 COERCE and BIT-* functions when they return freshly constructed
2286 objects. (reported by Nikodemus Siivola and Paul Dietz)
2287 * optimization: improved the MIPS versions of generic (in the
2288 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2289 * optimization: direct conversion of (unsigned-byte 32) to floats on
2290 the PowerPC platform.
2291 * optimization: structure instances with raw slots now use less
2292 memory, and probably show better memory locality. (thanks to
2294 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2295 are treated as requests for stack allocation on the x86-64,
2296 Alpha-32, PPC and SPARC platforms.
2297 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2298 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2299 (thanks to Tony Martinez)
2301 ** gcing a dead thread can no longer lead to lockups
2302 ** threads block signals until they are set up properly
2303 ** errno is no longer shared by threads
2304 ** interrupt-thread restores the eflags register on x86
2305 ** fixed some lockups due to gc/thread interaction
2306 * fixed some bugs revealed by Paul Dietz' test suite:
2307 ** invalid dotted lists no longer raise a read error when
2308 *READ-SUPPRESS* is T
2309 ** signal an error if a symbol that names a declaration is used
2310 as the name of a type, or vice versa
2311 ** allow using the (declare (typespec var*)) abbreviation for
2312 (declare (type typespec var*)) with all type specifiers
2313 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2314 ** always return NIL from PPRINT-POP when OBJECT is NIL
2315 ** don't signal errors when pretty-printing malformed LABELS,
2316 FLET or MACROLET forms
2317 ** declarations in a DOLIST body are also in scope for the
2319 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2321 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2324 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2325 * fixed cross-compiler leakages that prevented building a 32-bit
2326 target with a 64-bit host compiler.
2327 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2328 opened with :IF-EXISTS :OVERWRITE.
2329 * fixed bug 281: error for an invalid qualifier in a short-form method
2330 combination method is not signalled until the faulty method is called.
2331 * bug fix: iteration variable type inferrer failed to deal with open
2332 intervals. (reported by Alan Shields)
2333 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2334 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2335 or more runtime options were provided to the sbcl binary.
2336 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2337 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2338 * optimization: there's now a fast-path for fixnum arguments in the
2339 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2340 * optimization: the code generated on x86-64 is more compact thanks
2341 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2342 * bug fix: floating-point exception handling now partly works on
2343 x86-64. (Thanks to James Knight)
2344 * improvement to the MIPS backend from Thiemo Seufer: C-style
2345 64-bit long long arguments and return values to alien functions
2347 * fixed some bugs revealed by Paul Dietz' test suite:
2348 ** the type-error signalled from WARN has a filled-in DATUM slot.
2349 ** the type-error required when a stream is not associated with
2350 a file has the stream as its datum.
2351 ** type-errors on single-floats on x86-64 no longer have
2352 :INVALID-OBJECT as the datum
2353 ** the type-errors signalled for invalid function names now have
2354 a correct expected type
2355 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2356 for structures defined with a :TYPE. Documentation strings for
2357 typed structures are no longer immediately discarded
2358 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2359 broadcast streams and synonym streams. FILE-LENGTH now also works
2360 on broadcast streams.
2362 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2363 * incompatible change: the --noprogrammer option, deprecated since
2364 version 0.7.5, has been removed. Please use the equivalent
2365 --disable-debugger option instead.
2366 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2368 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2369 inoperational for a while now) has been completely removed.
2370 * null lexical environments are now printed as #<NULL-LEXENV>,
2371 significantly reducing the amount of clutter in typical backtraces.
2372 * documentation on weak pointers, finalization, and after GC hooks
2373 has been added to the manual.
2374 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2375 as other specialized array types, is much faster. SUBSEQ and
2376 COPY-SEQ on such arrays have also been sped up.
2377 * optimization: EQL is now more efficient when at least other argument
2378 is known to be of type (OR FIXNUM (NOT NUMBER)).
2379 * fixed bug: the runtime is now less vulnerable to changes in the
2380 size of the SBCL object on OS X, and virtual memory is reserved for
2381 all spaces that need to be at a fixed address.
2382 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2383 * fixed bug: finalizers and after GC hooks that cause consing are now
2385 * fixed bug: compiler error messages and summaries are now printed to
2386 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2387 * fixed inference of the upper bound of an iteration variable.
2388 (reported by Rajat Datta).
2389 * fixed bug 211e: calling local functions with duplicated constant
2390 keyword argument no longer causes a bogus style warning about an
2392 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2393 ftype declaration to be disregarded. (reported by Dave Roberts)
2394 * fixed bug 373: caused by erronous compilation of references to alien
2395 variables in the runtime on ppc/darwin.
2396 * fixed bug 376: CONJUGATE type deriver.
2397 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2398 (reported by Baughn on #lisp)
2399 * a cross-compiler bug on non-x86 platforms has been identified and
2400 fixed. (thanks to Bruno Haible)
2401 * improvements to the MIPS runtime code for increased stability.
2402 (thanks to Thiemo Seufer)
2403 * increased the maximimum compact environment size to allow
2404 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2405 * partial workaround for bug 135: don't name the function we're
2406 calling for hairy cases of EVAL, so as not to accumulate one environment
2407 entry per call to EVAL. (reported by Kevin Reid)
2408 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2409 * optimization: type testing for non-vector arrays should be faster.
2410 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2412 * bug fix: setting 31st element of a bit vector to zero did not work
2414 * bug fix: redefining a class definition which failed due to a
2415 previous accessor / function clash now works (but see BUGS entry
2416 #380 for more problems in this area). (thanks to Zach Beane)
2417 * the long form of DEFINE-METHOD-COMBINATION disables method group
2418 checking when given a single method group with pattern *. (thanks
2420 * on x86 compiler supports stack allocation of results of simple
2421 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2422 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2423 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2424 * fixed some bugs related to Unicode integration:
2425 ** the restarts for recovering from input and output encoding
2426 errors only appear when there is in fact such an error to
2428 * fixed some bugs revealed by Paul Dietz' test suite:
2429 ** MISC.549 and similar: late transformation of unsafe type
2430 assertions into derived types caused unexpected code
2432 ** SCALE-FLOAT type deriver is less wrong.
2433 ** type derivers for EXP, LOG and similar functions compute result
2434 types for complex arguments better.
2435 ** (MISC.563) CONJUGATE type deriver works for very restricted
2437 ** out-of-line type testers for character strings are available.
2438 ** EQUAL compiler transform understands specialness of objects
2440 ** accessing double-floats stored on the stack now works on x86-64.
2441 ** debugger internals could sometimes create invalid lispobjs,
2442 resulting in GC crashes.
2443 ** MISC.548: type check weakening can convert required type into
2445 ** initialization forms for bindings are not in scope of free special
2448 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2449 * incompatible change: thread support for non-NPTL systems has
2450 been removed - locking is buggy and unreliable. A threaded
2451 SBCL build will now warn at startup and refuse to create
2452 new threads, unless futex support is detected in the kernel
2453 * incompatible change: the top level REPL now has only an ABORT
2454 restart associated with it, not TOPLEVEL and ABORT as it used to.
2455 TOP and TOPLEVEL are now available as debugger commands for
2456 returning to the top level.
2457 * incompatible change: forms evaluated in the REPL now use the
2458 global optimization policy.
2459 * incompatible change: user- and system-initialization files are
2460 no longer processed with LOAD, but by READ and EVAL; hence the
2461 global optimization policy, startup package, readtable, etc,
2463 * The .fasl file format number has been incremented because of
2464 various incompatible changes.
2465 * internal entry point details and argument counts no longer appear
2466 in backtraces unless explicitly requested by setting
2467 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2468 * built-in and standard functions no longer have names like "top
2469 level local call to FOO".
2470 * fixed bug 32: functions defined in non-null lexical environments
2471 now have more legible printed representation
2472 * fixed bug 33: functions defined in non-null lexical environemnts
2473 are now more amenable to inspection by INSPECT.
2474 * workaround for bug 354: XEPs no longer appear in backtraces unless
2475 explicitly requested.
2476 * fixed bug: receiving the signal which results from attempting to
2477 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2478 SIGBUS on other *BSDs) on architectures where the C stack is also
2479 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2480 to debugger confusion or wild instability. (reported by Cheuksan
2482 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2483 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2484 (reported by Lutz Euler)
2485 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2486 compiled code. (reported by Paul Dietz)
2487 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2488 specialized parameter to a method to something that is not TYPEP
2489 the specializer is now possible.
2490 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2491 face of package deletion.
2492 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2493 pathname. (reported by David Tolpin on c.l.l)
2494 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2495 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2496 STRING-STREAM and FILE-STREAM, respectively.
2497 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2498 than previously; in addition, its test suite is now run on build.
2499 (thanks to Luke Gorrie)
2500 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2501 * optimization: added a immediate representation for single-floats
2503 * fixed some bugs revealed by Paul Dietz' test suite:
2504 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2505 ** attempting to create a package with a colliding nickname causes
2506 correctable errors to be signalled.
2507 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2508 ** several x86-64 backend bugs related to sign-extension of immediate
2511 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2512 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2513 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2515 * fixed loading of multiply forward-referenced layouts.
2516 (thanks to Cheuksan Wang)
2517 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2518 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2519 (see COMPILE-FILE documentation for details of :PRINT option)
2520 * fixed bugs 19 and 317: fixed-format floating point printing is
2521 more accurate. This also fixes a bug reported by Adam Warner
2522 related to the ~@F format directive.
2523 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2525 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2526 dispatch table if the from-char is a dispatch macro character.
2527 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2528 by the wordsize no longer ignore the last word. (reported by Lutz
2530 * fixed bug in type checking of dynamic-extent variables. (reported
2532 * optimization: sequence traversal functions use their freedom to
2533 coerce function designators to functions.
2534 * optimization: code with many calls to CLOS methods specialized on
2535 CLOS classes has had redundant type checks removed.
2536 * optimization: added declarations to speed up operations that access
2537 the internal character database (for example STRING-UPCASE)
2538 * optimization: comparison operations between floats and sufficiently small
2539 fixnums no longer create extra rationals
2540 * fixed some bugs related to Unicode integration:
2541 ** portions of multibyte characters at the end of buffers for
2542 character-based file input are correctly transferred to the
2543 start of the buffer at the next read.
2544 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2545 passing it through to OPEN.
2546 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2547 argument given to internal calls to OPEN.
2548 ** the built-in comment readers (introduced by character sequences
2549 ";" and "#|") are more forgiving to encoding errors; they will
2550 STYLE-WARN and then attempt to resync the stream at a character
2551 boundary. (thanks to Teemu Kalvas)
2552 * fixed some bugs in the x86-64 port:
2553 ** Negative short int return values from c-calls are sign-extended
2555 ** The stack is aligned to 16-bytes for c-calls, as required by
2556 the ABI. (thanks to Cheuksan Wang)
2557 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2558 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2559 for enums. (thanks to Vincent Arkesteijn)
2560 ** Multiple small optimizations and bugfixes for floating point
2562 * fixed some bugs revealed by Paul Dietz' test suite:
2563 ** Space, Tab, Linefeed, Return and Page have the invalid
2564 secondary constituent character trait.
2565 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2567 ** WITH-INPUT-FROM-STRING should only update the index place on
2569 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2570 works more reliably.
2571 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2572 with one-dimensional arrays with fill pointers.
2573 ** TYPE-OF failed on a complex with an integer realpart and a
2575 ** compiler failure during type inference for the code of form
2576 (IF (EQL X (THE ...)) ...) (MISC.535).
2578 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2579 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2580 platform. The port supports 61-bit fixnums, large memory spaces
2581 and reloading shared object files.
2582 * enhancement: saving cores with foreign code loaded is now
2583 supported on ppc/Darwin in addition to the previously supported
2585 * enhancement: the statistical profiler now walks deeper into the
2586 call stack for more meaningful call-graphs and accrued time
2587 reports (x86/x86-64 only). It also now reports time spent in
2589 * enhancement: it is now possible to trace most individual methods
2590 of a generic function in addition to tracing the generic function
2592 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2594 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2595 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2596 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2597 produces an error. (thanks to Vincent Arkesteijn)
2598 * bug fix: NAMESTRING on pathnames with :WILD components in their
2599 directories works correctly. (thanks to Artem V. Andreev)
2600 * fixed bug 125: compiler preserves identity of closures. (reported
2602 * bug fixed: functions with &REST arguments sometimes failed with
2603 "Undefined function" when compiled with (DEBUG 3). (reported by
2605 * bug fix: overflow during compiling of setting element of a bit
2606 vector with constant index and value. (reported by Timmy Douglas)
2607 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2608 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2609 * on x86 compiler partially supports stack allocation of dynamic-extent
2611 * GO and RETURN-FROM do not check the extent of their exit points
2612 when compiled with SAFETY 0.
2613 * fixed some bugs related to Unicode integration:
2614 ** encoding and decoding errors are now much more robustly
2615 handled; it should now be possible to recover even from invalid
2616 input or output to the terminal. (thanks to Teemu Kalvas)
2617 ** provided a first cut at implementing STRING-TO-OCTETS and
2618 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2619 ** altered the SB-MD5 contributed module slightly, changing the
2620 interface just enough for it to be supportable for builds where
2621 lisp characters are not eight bits.
2622 * fixed some bugs revealed by Paul Dietz' test suite:
2623 ** the FORMATTER-generated functions for ~V[ conditionals require
2624 the correct number of arguments.
2625 ** READ-FROM-STRING returns the mandated second value when applied
2626 to displaced strings.
2627 ** the #\Rubout and #\Backspace characters are treated as invalid
2628 constituent characters by the tokenizer.
2630 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2631 * new feature: reloading changed shared object files with
2632 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2633 * new feature: references to foreign variables and functions
2634 can now be compiled and loaded before the corresponding shared
2635 object file is loaded, as long as the foreign definitions are
2636 available at runtime.
2637 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2638 supported. (thanks to Dan Debertin)
2639 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2640 just keywords. (thanks to Vincent Arkesteijn)
2641 * fixed bug #331: structure-class instances corresponding to
2642 DEFSTRUCT forms are now created eagerly.
2643 * fixed bug #345: backtraces from calls to undefined functions work
2644 on x86 as well. Related bug #61 is now also partially fixed on x86
2645 (backtraces from throws to unknown catch tags.)
2646 * bug fix: lambda-list parsing is now stricter vrt. order and number
2647 of lambda-list keywords.
2648 * bug fix: as specified by AMOP, an error is signalled if a
2649 class-option appears multiple times in a DEFCLASS form. (reported
2651 * bug fix: RANDOM can be compiled when the compiler derives the type
2652 of its numeric argument as a disjoint set of small integers.
2653 (reported by Paul Dietz)
2654 * bug fix: starting a core saved with shared objects loaded when
2655 those objects are not available no longer causes threaded SBCL to
2656 hang. (reported by Sean Ross)
2657 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2659 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2660 argument, which must always be NIL. (reported by Kalle Niemitalo)
2661 * bug fix: printing 1.0d+23 no longer results in an error.
2662 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2663 * bug fix: structure slot setters preserve evaluation order. (thanks
2665 * fixed some bugs related to Unicode integration:
2666 ** RUN-PROGRAM can allow its child to take input from a Lisp
2667 stream. (reported by Stefan Scholl)
2668 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2669 locales. (reported by Ken Causey)
2670 * fixed some bugs revealed by Paul Dietz' test suite:
2671 ** INCF, DECF and REMF evaluate their place form as specified in
2673 ** FORMATTER expands ~{ ~} iteration directives with V or #
2674 parameters correctly.
2675 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2676 consequent uses no arguments correctly.
2677 ** the system has a partial understanding of the (COMPLEX RATIO)
2679 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2682 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2683 * new feature: a build-time option (controlled by the :SB-UNICODE
2684 keyword feature, enabled by default) for building the system with
2685 support for the entire 21-bit character space defined by the
2687 * new feature: the system now has rudimentary external-format
2688 support; the primary user-visible change at this time is that
2689 characters with the high bit set (such as lower-case-e-acute) will
2690 print correctly to a terminal in a UTF-8 environment.
2691 * minor incompatible change: BASE-CHAR no longer names a class;
2692 however, CHARACTER continues to do so, as required by ANSI.
2693 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2694 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2695 has been moved to the SB-EXT package (temporarily re-exported from
2697 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2698 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2700 * fixed bug #351: better error-handlind and reporting for malformed
2702 * fixed bug #350: bignum-printing is now more memory-efficient,
2703 allowing printing of very large bignums, eg. (expt 2 10000000).
2704 (reported by Bruno Haible)
2705 * fixed bug #302: better primitive-type selection for intersection
2707 * fixed bug #308: non-graphic characters now all have names, as
2708 required. (reported by Bruno Haible)
2709 * bug fix: redefining a class with different superclasses now correctly
2710 removes it from the direct-subclasses of its previous superclasses.
2711 (reported by David Morse)
2712 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2713 new value now works. (reported by Bruno Haible)
2714 * bug fix: correct canonicalization of multiple non-standard slot
2715 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2716 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2717 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2718 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2719 now exists, an signals an error.
2720 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2721 during macroexpansion for non-iteration variables as well. (reported
2722 by Bruno Haible for CMUCL)
2723 * bug fix: Cyclic structures and unprintable objects in compiler
2724 messages no longer cause errors. (reported by Bruno Haible)
2725 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2726 and READ-FROM-STRING all now return a primary value of NIL if
2727 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2728 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2729 (reported by Bruno Haible for CMUCL)
2730 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2731 do not designate a condition. (reported by Bruno Haible for
2733 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2734 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2735 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2736 permitting resolution in favour of any of the conflicting symbols.
2737 (reported by Bruno Haible for CMUCL)
2738 * bug fix: EQUAL compiler optimizations is less aggressive on
2739 strings which can potentially compare true despite having distinct
2740 specialized array element types.
2741 * bug fix: unit enumerations can be defined without dividing by
2742 zero. (thanks to Vincent Arkesteijn)
2743 * FORMAT compile-time argument count checking has been enhanced.
2744 (report from Bruno Haible for CMUCL)
2745 * a partial workaround for the bug 262: the compiler does not try to
2746 inline-expand a local function doing RETURN-FROM from a deleted
2747 BLOCK. (thanks to Peter Denno for the bug report and to David
2748 Wragg for the simple test case)
2749 * fixed some bugs revealed by Paul Dietz' test suite:
2750 ** RENAME-PACKAGE allows all package designators as new package
2752 ** constraint propagation and lambda variable substitution are
2753 more cautious in dealing with partially deleted code.
2754 ** compiler sometimes lost reoptimization passes.
2755 ** CERROR, given a condition as condition designator, passes its
2756 remaining arguments to the continue format control without
2758 ** Case-altering FORMAT directives work correctly on non-ASCII
2760 ** The REAL type specifier handles bounds outside the floating
2761 point ranges without signalling FLOATING-POINT-OVERFLOW.
2762 ** Functions with IR1-transformations can create intercomponent
2763 references to global functions.
2764 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2766 ** FORMAT ~R treats a nil value for its first parameter correctly.
2768 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2769 * enhancement: saving cores with foreign code loaded is now
2770 supported on x86/NetBSD and sparc/Linux in addition to the previously
2771 supported platforms.
2772 * bug fix: on some platforms repeated installations caused multiple
2773 copies of HTML documentation to be installed -- should not happen
2774 any more. (reported by Stefan Scholl)
2775 * bug fix: parsing self-recursive alien record types multiple times
2776 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2777 original patch by Helmut Eller for CMUCL)
2778 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2779 (thanks to Richard Kreuter)
2780 * bug fix: defining classes whose accessors are methods on existing
2781 generic functions in other (locked) packages no longer signals
2782 bogus package lock violations. (reported by François-René Rideau)
2783 * bug fix: special variables as DEFMETHOD parameters no longer have
2784 associated bogus type declarations. (reported by David Wragg and
2786 * bug fix: read-write consistency on streams of element-type
2787 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2788 * bug fix: redefiniton of the only method of a generic function with
2789 no DEFGENERIC no longer emits a full WARNING. In addition,
2790 redefinition of generic functions with no DEFGENERIC to an
2791 incompatible lambda list now signals an error. (thanks to Zach
2793 * bug fix: DEFGENERIC now works even when there's a function of the
2794 same name in an enclosing lexical environment. (thanks to Zach
2796 * fixed compiler failure, caused by instrumenting code during
2797 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2798 * optimization: added loop analysis and improved register allocation
2799 * fixed some bugs revealed by Paul Dietz' test suite:
2800 ** POSITION on displaced vectors with non-zero displacement
2801 returns the right answer.
2802 ** (SIMPLE-STRING) is a valid type specifier for sequence
2804 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2806 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2807 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2809 ** The justification version of the FORMAT ~< directive treats
2810 non-zero minpad parameter correctly.
2812 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2813 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2814 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2815 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2816 the supported interface.
2817 * new feature: Single-stepping of code compiled with DEBUG 2 or
2818 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2819 * new feature: saving cores with foreign code loaded is now
2820 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2821 Timothy Moore's work for CMUCL)
2822 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2823 parameters to * instead of NIL if no initform is supplied.
2824 (reported by Johan Bockgaard)
2825 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2826 correctly when FUNCALL appears as the car of the form. Note:
2827 despite this FUNCALL forms are not currently subject to
2828 compiler-macro expansion. (port of Raymond Toy's fix for the
2829 same from CMUCL, reported by Johan Bockgaard)
2830 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2831 (thanks for Teemu Kalvas)
2832 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2833 case instead of terminating the iteration (thanks for Julian
2834 Squires, Sean Champ and Raymond Toy)
2835 * bug fix: incorrect expansion of defgeneric that caused a style
2836 warning. (thanks for Zach Beane)
2837 * bug fix: slot accessor effective method computation works properly
2838 for classes with multiple non-standard applicable methods on
2839 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2840 * on x86 compiler supports stack allocation of results of LIST and
2841 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2842 CMUCL implementation by Gerd Moellmann)
2843 * fixed some bugs revealed by Paul Dietz' test suite:
2844 ** FORMAT strings with both the ~<~:;~> form of the justification
2845 directive and pretty-printing directives cause an error.
2847 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2848 * incompatible change: the internal functions
2849 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2850 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2851 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2852 instead of the old functions.
2853 * new feature: on platforms where "dladdr" is available foreign
2854 function names now appear in backtraces. (based on Helmut Eller's
2856 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2857 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2859 * documentation: ASDF manual is now distributed with SBCL.
2860 * bug fix: SBCL can now load its contributed modules with REQUIRE
2861 even if the system-provided entries have been removed from
2862 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2864 * bug fix: backtraces involving undefined functions or assembly
2865 routines are more informative. (thanks to Brian Downing)
2866 * bug fix: mutually referent alien structures now work correctly.
2867 (reported by Rick Taube)
2868 * bug fix: structures defined by WITH-ALIEN can be referred to
2869 within other definitions in the same WITH-ALIEN.
2870 * bug fix: division operators (MOD, TRUNCATE and the like) with
2871 constant zero divisors and integer dividends no longer generate
2873 * bug fix: provide default methods for INPUT-STREAM-P and
2874 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2875 * bug fix: improve the detection and resolution of MOP metacycles
2876 (where effective method computation depends on the generic function
2877 having its effective method computed). (reported by Bruno Haible)
2878 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2879 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2880 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2881 * bug fix: pathnames with relative directory components can be
2882 represented relative to default pathnames.
2883 * optimization: in taking the GCD of bignums, reduce the two bignums
2884 to approximately the same size (using Euclid's algorithm) before
2885 applying the more sophisticated binary GCD. (thanks to Juho
2887 * optimization: COUNT on bitvectors now operates word-at-a-time.
2888 * optimization: ASH with a positive, but not necessarily constant,
2889 (leftwards) shift, when in a modular context, is compiled to a
2891 * fixed some bugs revealed by Paul Dietz' test suite:
2892 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2893 if the corresponding argument is NIL.
2894 ** FORMAT directives accepting a minpad parameter treat negative
2896 ** literal commas as character parameters to FORMAT directives are
2898 ** literal spaces directly after ~<Newline> directives within a
2899 format-logical-block (~:< ~@:>) do not induce :FILL-style
2900 conditional newlines.
2901 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2902 as specified: it no longer includes conditional newlines).
2903 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2905 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2906 :PER-LINE-PREFIX argument does not evaluate to a string.
2908 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2909 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2910 the manual for details; for now, package locks can be disabled by
2911 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2912 if no major problems are found then it is likely that they will be
2913 compiled in unconditionally.
2914 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2915 unsupported operators on all platforms. To load a shared library
2916 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2917 object file, link it into a shared library outside of SBCL and
2918 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2920 * bug workaround: ROOM T and the GC were not working together
2921 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2922 reporting facility aren't preserved. That reporting has been
2923 disabled, so now until and unless someone figures out how to make it
2924 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2925 * minor incompatible change: as threatened around sbcl-0.8.0, the
2926 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2927 The symbols are also exported from SB-PCL for backwards
2928 compatibility, but more so than before SB-PCL should be treated as
2929 an implementation-internal package.
2930 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2932 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2933 It is known as of this release not to work on the Alpha, however.
2934 * fixed bug #167: errors signalled due to illegal syntax in method
2935 bodies are now more legible.
2936 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2937 designators and can hence be used with TYPEP.
2938 * fixed bug #333: CHECK-TYPE now ensures that the type error
2939 signalled, if any, has the right object to be accessed by
2940 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2941 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2942 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2944 * fixed bug #334: programmatic addition of slots using specialized
2945 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2946 and :ALLOCATION :CLASS slots.
2947 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2948 float exponents. (rereported by Peter Seibel)
2949 * fixed a bug: #\Space (and other whitespace characters) are no
2950 longer considered to be macro characters in standard syntax by
2951 GET-MACRO-CHARACTER.
2952 * fixed bug: initialization of condition class metaobjects no longer
2953 causes an instance of the condition to be created. (reported by
2955 * fixed bug: it is now possible to have slots such that
2956 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2957 description is neither :INSTANCE nor :CLASS.
2958 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2959 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2960 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2961 non-standard SLOT-DEFINITION-ALLOCATION values.
2962 * fixed bugs: various race conditions handling exiting threads.
2963 CL-PPCRE's thread torture test now passes.
2964 * fixed arguably-a-bug: GC time proportional to number of threads in
2965 system even when most of them are idle
2966 * optimization: improved performance of BIT and SBIT on bit-vectors.
2967 * .fasl file incompatibility: The fasl file version number has
2968 been incremented because of changes associated with package locks.
2970 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2971 * minor incompatible change: the system no longer provides
2972 optimization hints (conditions which are TYPEP
2973 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2974 mode; these hints are still emitted when higher SPEED optimization
2976 * new contrib module: a sampling profiler (profiling by statistical
2977 sampling, rather than by instrumenting functions) is available as
2978 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2979 * the behaviour of the standard function ED is now customizeable by
2980 third parties through a hook variable: see ED's documentation
2981 string for information on the protocol.
2982 * the compiler no longer emits efficiency notes for (FUNCALL X)
2983 when the type of X is uncertain under default optimization
2985 * fixed bug 276: mutating a binding of a specialized parameter to a
2986 method to something that is not TYPEP the specializer is now
2988 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2989 exhibit the required behaviour on the x86 platform. (thanks to
2990 Peter van Eynde, Eric Marsden and Bruno Haible)
2991 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2992 even for difficult arguments. (reported by Peter Graves)
2993 * fixed bug 141a: the backquote printer now descends quoted
2995 * fixed another bug in backquote printing: no more destructive
2996 modification of the form's list structure. (reported by Brian
2998 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2999 move between its address being taken and the call to
3000 interrupt_thread, fixing a crashing race condition.
3001 * the SB-POSIX contrib implementation has been adjusted so that it
3002 no longer exhibits ridiculously poor performance when constructing
3003 instances corresponding to C structs.
3005 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3006 * minor incompatible change: the sb-grovel contrib now treats C
3007 structures as alien (in the sense of SB-ALIEN) objects rather than
3008 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3009 has implications for memory management of client code
3010 (sb-grovel-returned objects must now be manually managed) and for
3011 type safety (alien objects now have full types).
3012 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3013 used to control emission of compiler diagnostics, rather than the
3014 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3015 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3016 quality should be considered deprecated.
3017 * install.sh now installs the user manual as well
3018 * (not quite a new documentable feature, but worth considering in
3019 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3020 beginnings of a semantically meaningful condition hierarchy is
3021 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3023 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3024 designator as the defaults argument.
3025 * fixed bug: Displaced arrays whose displaced-to array has become
3026 too small now cause ARRAY-DIMENSION to signal an error, providing
3027 for safer bounds-checking. (reported by Bruno Haible)
3028 * fixed bug: DEFCLASS slot definitions with identical :READER and
3029 :WRITER names now signal a reasonable error. (reported by Thomas
3031 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3033 * fixed bug: Invalid slot specification errors now print correctly.
3034 (thanks to Zach Beane)
3035 * fixed bug 320: Shared to local slot value transfers in class
3036 redefinitions now happen corrently from superclasses as
3037 well. (reported by Bruno Haible)
3038 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3040 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3041 improper lists correctly. (reported by Bruno Haible)
3042 * fixed bug 313: source-transform for <fun-name> was erroneously
3043 applied to a call of a value of a variable with name <fun-name>.
3044 (reported by Antonio Menezes Leitao)
3045 * fixed bug 307: The obsolete instance protocol ensures that
3046 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3047 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3048 remove dead unknown-values globs from the middle of the stack.
3049 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3050 easier to resume long computations after using *BREAK-ON-SIGNALS*
3051 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3052 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3053 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3054 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3055 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3056 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3058 * fixed a (fairly theoretical) bug in string printing: if
3059 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3060 does not have array-element-type equal to the most general string
3062 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3063 function name. (thanks to Nikodemus Siivola)
3064 * fixed bug: compile-time format string checker failed on
3065 non-closed ~{. (reported by Thomas F Burdick)
3066 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3067 don't warn on legal loop code involving more than one aggregate
3068 boolean. (thanks to Nikodemus Siivola)
3069 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3070 in keyword position to MAKE-PACKAGE was not being reported as
3072 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3073 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3075 * fixed bugs 280 and 312: the checking for multiple definitions in a
3076 file is less likely to become confused by uses of inline
3078 * fixed bug: the #S reader macro performs the keyword coercion
3079 specified for slot names. (reported by Kalle Niemitalo)
3080 * fixed bug: lambda lists may contain symbols whose names start with
3081 & but are not lambda-list-keywords; their occurrence triggers a
3083 * fixed bug 321: define-method-combination argument lambda lists do
3084 not cause invalid code to be generated when &optional or &aux
3085 variables have default values. (reported by Bruno Haible)
3086 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3087 have CLOS classes; this appears also to have fixed reported
3088 instability in stack exhaustion detection.
3089 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3090 MUFFLE-WARNING when no associated restart is present is now
3092 * optimization: rearranged the expansion of various defining macros
3093 so that each expands into only one top-level form in a
3094 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3096 * optimization: used a previously little-used slot in symbols to
3097 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3099 * fixed some bugs revealed by Paul Dietz' test suite:
3100 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3102 ** Fixed an optimization bug related to inheritance of initforms
3103 from local to shared slots.
3104 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3105 ** CAST optimizer forgot to flush argument derived type.
3106 ** print/read consistency on floats is now orders of magnitude
3107 more likely. (thanks also to Bruno Haible for a similar report
3109 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3110 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3111 for objects of type REAL. Make it so.
3112 ** SXHASH is specified (infelicitously) to respect similarity,
3113 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3114 it so. (thanks to Markus Ziegler)
3115 ** on the Alpha, the compiler succeeds in compiling functions
3116 returning a known number of arguments greater than 63.
3117 ** fixed handling of invalid NIL arguments in keyword position
3119 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3121 ** provided a readably-printable representation for RANDOM-STATE
3123 ** ensured that pathnames, where they have a namestring, always
3124 print using #P"..." syntax.
3126 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3127 * Support for the forthcoming 2.0 version of the NetBSD kernel
3128 running on x86 hardware has been added. (thanks to Perry
3129 E. Metzger most immediately, and others for their past work)
3130 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3131 current release version; SBCL's OpenBSD support had been broken
3132 since about the time of OpenBSD's switch to ELF binary format.)
3133 * [placeholder for DX summary]
3134 ** user code with &REST lists declared dynamic-extent, under high
3135 speed or space and low safety and debug optimization policy.
3136 * The manual has been converted to Texinfo format and the debugger
3137 chapter from the cmucl manual has been added.
3138 * A facility has been added to extract documentation strings from
3139 sbcl and store them as Texinfo-formatted snippets for inclusion in
3140 the manual (via Texinfo's @include directive)
3141 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3142 the test case to Dave Roberts)
3143 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3144 pointers. (reported by Sean Ross)
3145 * bug fix: PROFILE output is printed nicely even for large numerical
3146 values. (thanks to Zach Beane)
3147 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3148 greater than 32 handle EOF correctly.
3149 * bug fix: on X86 an immediate argument of the IMUL instruction is
3150 correctly printed in disassembly. (thanks to Lutz Euler)
3151 * bug fix: class slots in redefined classes preserve their old
3152 values. (thanks to Bruno Haible and Nikodemus Siivola)
3153 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3154 succeeds. (reported by Marco Baringer)
3155 * fixed some bugs revealed by Paul Dietz' test suite:
3156 ** READ-SEQUENCE now works on ECHO-STREAMs.
3157 ** RATIONALIZE works more according to its specification. (thanks
3160 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3161 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3162 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3163 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3164 should matter to you only if you rebind the printer control
3165 variables and then find you want different bindings in the
3166 debugger than in the ordinary execution of your program.)
3167 * The runtime build system has been tweaked to support building
3168 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3169 assembler and linker. (thanks to Nikodemus Siivola)
3170 * Unbound, undefined, undeclared variables now trigger full
3171 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3172 more often programmer error than deliberate exploitation of undefined
3174 * optimization: the hash algorithm for strings has changed to one
3175 that is less vulnerable to spurious collisions. (thanks to Juho
3177 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3178 needless bounds checking. (thanks to Juho Snellman)
3179 * optimization: implemented multiplication as a modular
3180 (UNSIGNED-BYTE 32) operation on the PPC backend.
3181 * fixed some bugs revealed by Paul Dietz' test suite:
3182 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3184 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3185 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3186 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3188 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3190 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3192 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3193 their output stream on EOF from read.
3194 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3195 have been read to end-of-file.
3196 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3198 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3199 description of determination of which consecutive characters
3201 ** Printing the "Space" character with escaping on now yields "#\\ ",
3202 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3203 ** Reading floating-point numbers with *READ-BASE* set to a number
3204 less than 10 works correctly.
3205 ** Reading floating-point numbers with *READ-BASE* set to a number
3206 more than 10 works correctly.
3207 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3208 the readtable currently in effect.
3210 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3211 * minor incompatible change: parsing of namestrings on a physical
3212 (Unix) host has changed; numbers after the final #\. in a
3213 namestring are no longer interpreted as a version field. This is
3214 intented to be largely invisible to the user, except that the
3215 meaning of the namestring "*.*.*" has changed: it now refers to a
3216 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3217 should usually be replaced by
3218 (make-pathname :name :wild :type :wild :version :wild)
3219 with the added benefit that this is more likely to be portable.
3220 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3221 option to OPEN now signals an error if the file being opened
3222 exists; this may have an impact on existing code.
3223 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3224 signals received, on the PowerPC platforms (both Linux and
3225 Darwin). (thanks to Pierre Mai for pointing out the location of
3227 * several fixes on OS X: The system now builds and runs cleanly on
3228 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3229 (thanks to Brian Mastenbrook)
3230 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3231 second-resolution: integer multiples of 1/3600 between -24 and 24.
3232 (thanks to Vincent Arkesteijn)
3233 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3234 type when called with 1 argument; PEEK-CHAR checked type of
3235 PEEK-TYPE only after having read first character from a
3236 stream. (reported by Peter Graves)
3237 * bug fix: the garbage collector now has much better locality
3238 behaviour, and in particular no longer treats all memory as being
3239 exhausted when many small objects point to each other in a deeply
3241 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3242 recognized as being TYPEP their class.
3243 * bug fix: the PUSHNEW documentation string has been corrected.
3244 (thanks to Vincent Arkesteijn)
3245 * bug fix: defaulting of the value for the last of an atypically
3246 large number of multiple values being bound was not being
3247 performed correctly on the Alpha or PPC platforms
3248 * optimization: implemented multiplication as a modular
3249 (UNSIGNED-BYTE 32) operation on the x86 backend.
3250 * optimization: SEARCH on simple-base-strings can now be open-coded.
3251 (see also contrib/compiler-extras.lisp for inspiration for
3252 teaching the compiler about the Boyer-Moore algorithm).
3253 * value, returned by MAX (and MIN) called with several EQUALP, but
3254 not EQL, arguments now does not depend on compiler settings.
3255 * fixed some bugs revealed by Paul Dietz' test suite:
3256 ** in stack analysis liveness information is propagated from
3257 non-local entry points.
3258 ** pathwise CAST removing failed when the CAST node did not start
3260 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3261 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3263 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3264 host is already defined.
3265 ** RENAME-FILE works on streams instead of signalling an internal
3267 ** PEEK-CHAR uses the current readtable when determining whether
3268 or not a character is whitespace.
3269 ** MERGE-PATHNAMES handles the case when the pathname does not
3270 specify a name while the default-pathname specifies a version.
3271 ** Pathnames now stand a better chance of respecting print/read
3273 ** Attempting to use standardized file system operators with a
3274 pathname with invalid :DIRECTORY components signals a
3276 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3278 ** DIRECTORY on logical pathnames is more correct.
3279 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3280 signal a TYPE-ERROR if their argument is not a stream.
3281 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3282 designator argument does not designate a stream.
3283 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3284 examining the synonym.
3285 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3287 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3288 element-type larger than ([UN]SIGNED-BYTE 32).
3290 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3291 * When built with the :SB-FUTEX feature, threaded builds now take
3292 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3293 for faster/more reliable mutex and condition variable support.
3294 * Incompatible change (but one you probably shouldn't have been using
3295 anyway): the interface and code for arbitrating between multiple
3296 threads in the same user session has been redesigned.
3297 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3298 error when called without an explicit environment argument.
3299 (thanks to Nikodemus Siivola)
3300 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3301 confused about their position. (thanks to Adam Warner and Gerd
3303 * bug fix: Pretty printing backquoted forms with unquotations in the
3304 argument list position of various code constructs such as LAMBDA
3305 now works correctly. (reported by Paul Dietz)
3306 * bug fix: Pretty printing unquotations no longer loses all
3307 stream position information.
3308 * optimization: performance of string output streams is now less
3309 poor for multiple small sequence writes.
3310 * optimization: performance of CSUBTYPEP in the presence of complex
3311 expressions involving CONS and NOT many times has been improved.
3312 (reported by Paul Dietz)
3313 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3315 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3316 streams for the REPL, for the debugger, and so on. (thanks to
3318 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3319 * fixed some bugs revealed by Paul Dietz' test suite:
3320 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3321 is ignored if it is too small, rather than propagating through
3322 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3323 ** extremely complex negations of CONS types were not being
3324 sufficiently canonicalized, leading to inconsistencies in
3326 ** VALUES tranformer lost derived type.
3328 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3329 * fixed a bootstrapping bug: the build process no longer assumes
3330 that the various BOOLE-related constants have the same value in
3331 host and target lisps. (noted by Paul Dietz' test suite on an
3332 SBCL binary built from CLISP)
3333 * The system can now be dynamically linked on the MIPS platform,
3334 which enables dynamic loading of foreign code from Lisp. (thanks
3335 to Ralf Baechle for discussions on the MIPS ABI)
3336 * The system now records debugging information for its own source
3337 files in a filesystem-position-independent manner, relative to
3338 the "SYS" logical host.
3339 * fixed a compiler bug: MV-LET convertion did not check references
3340 to the "max args" entry point. (reported by Brian Downing)
3341 * tweaked disassembly notes to be less confident about proclaiming
3342 some instruction as an LRA. (thanks to Brian Downing)
3343 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3344 now each have their own history, command character, and other
3345 characteristics. (thanks to David Lichteblau)
3346 * fixed some bugs revealed by Paul Dietz' test suite:
3347 ** compiler failure in compiling LOGAND expressions including a
3349 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3350 shift greater than 32.
3351 ** FLUSH-DEST did not mark blocks for type check regeneration.
3352 ** HANDLER-CASE failed to accept declarations in handler clauses
3353 in some circumstances.
3355 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3356 * New code in contrib/sb-introspect (still probably not entirely
3357 stable yet) provides some support for smart Lisp development
3358 environments like SLIME.
3359 * The conditions signalled for errors occurring when loading .fasl
3360 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3361 in a way which should help ASDF recover gracefully.
3362 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3363 stuff has been cleaned up. If you code contrib/ stuff, this might
3364 affect you, and you can look at contrib/README, contrib/STANDARDS,
3365 and/or the 0.8.4.27 diff to check.
3366 * In full calls the compiler now does not generate checks for declared
3367 argument types for all arguments.
3368 * various threading fixes
3369 ** and some experimental patches which didn't make it into
3370 the main tree for this release, but which are shipped in
3371 contrib/experimental-thread.patch as a possible fix for some
3372 failures (deadlock, spinning...) in GC-intensive multithreaded
3374 * fixed PPC build problem (source code incompatibility of different
3375 library versions): added offsetof() hackery which attempts to divine
3376 where glibc maintainers put uc_mcontext today
3377 * fixed bug 282: compiler does not trust type assertions while passing
3378 arguments to a full call.
3379 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3380 &OPTIONAL VALUES type parameter.
3381 * fix bug 214: algorithm for noting rejected templates is now more
3382 similar to that of template seletion. (also reported by rydis on
3384 * fixed bug 141b: printing backquoted information readably and prettily
3385 inserts a space where necessary.
3386 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3387 (CHARACTER 10) are now reported as errors, rather than propagated
3388 as unknown types. (reported by piso on #lisp)
3389 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3390 with values NIL and :ERROR. (thanks to Milan Zamazal)
3391 * fixed bug 191c: CLOS now does proper keyword argument checking as
3392 described in CLHS 7.6.5 and 7.6.5.1.
3393 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3394 longer raise an error; further, using a list as a for-as-arithmetic
3395 counter now raises a meaningful error.
3396 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3397 now understood by sequence creation functions such as MAKE-SEQUENCE
3399 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3400 a STRING-INPUT-STREAM.
3401 * compiler enhancement: SIGNUM is now better able to derive the type
3403 * type declarations inside WITH-SLOTS are checked. (reported by
3405 * fixed some bugs revealed by Paul Dietz' test suite:
3406 ** incorrect optimization of TRUNCATE for a positive first
3407 argument and negative second.
3408 ** compiler failure in let-convertion during flushing dead code.
3409 ** compiler failure while deriving type of TRUNCATE on an
3410 interval, containing 0.
3411 ** ASH of a negative bignum by a negative bignum count now returns
3413 ** intersection of CONS types now canonicalizes properly, fixing
3414 inconsistencies in SUBTYPEP.
3416 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3417 * incompatible change: The --disable-debugger command line
3418 option now clobbers the debugger at a more fundamental
3419 level, by redefining #'INVOKE-DEBUGGER instead of by
3420 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3421 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3422 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3423 enter the debugger REPL and then suffer recursive errors
3424 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3425 while under the new system, BREAK in --disable-debugger mode
3426 terminates the system just as an unhandled error would.
3427 * fixed compiler performance when processing loops with a step >1;
3428 * bug fix: DOCUMENTATION now retrieves generic function
3429 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3430 support has been systematized, and now supports the methods
3431 specified by ANSI, along with a default method and a method for
3432 slot documentation. (reported by Nathan Froyd)
3433 * bug fix: effective methods associated with a generic function are
3434 no longer cached over a change of that generic function's method
3435 combination. (reported by Andreas Fuchs)
3436 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3437 names a non-existent directory. (thanks to Andreas Fuchs)
3438 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3439 the PPC platform, lead to stack corruption; this has been fixed.
3440 (reported by Rainer Joswig)
3441 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3442 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3443 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3444 arithmetic in general, is now much more reliable on the PPC
3446 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3447 platform now returns the right answer.
3448 * optimization: restored some effective method precomputation in
3449 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3450 precomputation is now tunable.
3451 * optimization: compiler-internal data structure use has been
3452 reviewed, and changes have been made that should improve the
3453 performance of the compiler by about 20%.
3454 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3455 simple-base-strings and simple-bit-vectors is improved.
3456 * optimization: the optimization of 32-bit logical and arithmetic
3457 functions introduced in version 0.8.3 on the x86 has been
3458 implemented on the mips, ppc and sparc platforms; an
3459 implementation of the same facility, but for 64-bit arithmetic,
3460 has been added for the alpha.
3461 * microoptimization: the compiler is better able to make use of the
3462 x86 LEA instruction for multiplication by constants.
3463 * bug fix: in some situations compiler did not report usage of
3464 generic arithmetic in (SPEED 3) policy.
3465 * bug 145b fix: compiler used wrong type specifier while converting
3466 MEMBER-types to numeric.
3467 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3469 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3470 index argument now works properly on the Alpha platform.
3471 * bug fix: floating point exception treatment on the Alpha platform
3473 * bug fix: FILE-POSITION works much better on string input and
3474 output streams. (thanks to Nikodemus Siivola)
3475 * bug fix: many threading/garbage collection symptoms sorted.
3476 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3477 might be pseudo-atomic.
3478 * internal change: Stopping for GC is now done with signals not
3479 ptrace. GC is now done in whichever thread wanted it, instead of
3481 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3483 * bug fix: result form in DO is not contained in the implicit
3485 * incompatible change: ICR structure is changed; the value part of
3486 CONTINUATION is now called LVAR; corresponding functions are
3487 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3488 * added type deriver for ISQRT (thanks to Robert E. Brown).
3489 * bug fix: better support for loading from the command line when an
3490 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3492 * fixed some bugs revealed by Paul Dietz' test suite:
3493 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3494 ** ROUND and FROUND now give the right answer when given very
3495 small float arguments.
3496 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3498 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3499 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3500 ** LCM should return a non-negative integer.
3501 ** PARSE-INTEGER returned the index of a terminator instead of the
3502 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3503 ** PARSE-INTEGER returned an incorrect index being applied to a
3505 ** LCM with two arguments of 0 returns 0 rather than signalling
3507 ** unsigned addition of a 32-bit constant with the high bit set no
3508 longer causes an internal compiler error on the x86.
3509 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3510 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3511 with negative last argument.
3512 ** byte specifiers with zero size and position no longer cause
3513 an error during type derivation.
3514 ** bignum multiplication on the Alpha platform now returns the
3516 * porting: The system now builds on SuSE AMD64, although it still
3517 generates a 32-bit binary.
3518 * .fasl file incompatibility: The fasl file version number has
3519 been incremented (because of the changes to internal compiler
3520 data structures referred to above).
3522 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3523 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3524 more accurately, on the Darwin kernel running on PowerPC hardware.
3525 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3526 * Compiler code deletion notes now signal a condition of type
3527 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3528 an associated MUFFLE-WARNING restart.
3529 * The compiler now performs limited argument count validation of
3530 constant format strings in FORMAT, and where appropriate in ERROR,
3531 CERROR and WARN. (thanks to Gerd Moellmann)
3532 * New ASDF-INSTALL contrib can be used for automatic download and
3533 installation of third-party Lisp code from CCLAN or other sites
3535 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3536 which forces another thread to execute a function supplied by the
3538 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3539 now accept and act upon their :ELEMENT-TYPE keyword argument.
3540 (reported by Martin Atzmueller, Edi Weitz)
3541 * bug fix: FILE-POSITION now accepts position designators up to
3542 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3543 is the greater. (thanks to Patrik Nordebo)
3544 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3545 Kalle Olavi Niemitalo)
3546 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3547 printable. (reported by Eric Marsden)
3548 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3549 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3550 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3551 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3552 (thanks to Stig Sandoe)
3553 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3554 UNREAD-CHAR now correctly includes the unread character in the
3555 target sequence. (thanks to Gerd Moellmann)
3556 * bug fix in threaded builds: the system can now be suspended and
3557 resumed by shell job control with minimal disruption.
3558 * bug fixes in times and timezones >2038AD
3559 * better handling of "where is GNU make?" problem in build scripts
3560 (thanks to Nikodemus Siivola)
3561 * new optimization: inside a named function any reference to a
3562 function with the same name is considered to be a self-reference;
3563 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3564 optimization quality.
3565 * new optimization on x86: logical functions and + now have
3566 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3567 used when the result is truncated to 32 bits.
3568 * VALUES declaration is partially enabled.
3569 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3570 * fixed some bugs revealed by Paul Dietz' test suite:
3571 ** The system now obeys the constraint imposed by
3572 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3573 types form a lattice under type intersection.
3574 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3575 ** ASSOC now ignores NIL elements in an alist.
3576 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3577 and (1+ MOST-POSITIVE-FIXNUM) answers.
3578 ** The addition of a method with invalid qualifiers to a generic
3579 function does not cause an error to be signalled immediately;
3580 a warning is signalled, and the error is generated only on
3581 calling the generic function.
3582 * changed .fasl file version number, in part to add type codes for
3583 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3584 obscure ANSI requirements
3586 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3587 * fixed bug 148: failure to inline-expand a local function left
3588 garbage, confusing the compiler.
3589 * fixed bugs 3cd: structure slot readers perform type check if the
3590 slot can have an invalid value (i.e. it is either not initialized
3591 or can be written with a less specific slot writer).
3592 * bug fix: the compiler now traps array references to elements off
3593 the end of an array; previously, the bounds checking in some
3594 circumstances could go off-by-one.
3595 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3597 * type declarations for array element types now obey the description
3598 on the CLHS page "Declaration TYPE", as per discussions on
3599 sbcl-help around 2003-05-08. This means that a declaration
3600 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3601 declaration, all references to BAR will be asserted or assumed
3602 (with THE, so dependent on compiler policy) to involve objects of
3603 type FOO. Note that no such declaration is implied in
3604 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3605 * declared types of functions from the "Conditions"
3606 chapter. (reported by Paul Dietz)
3607 * bug fix: CERROR accepts a function as its first argument.
3608 * bug fix: NTH an NTHCDR accept a bignum as index
3609 arguments. (reported by Adam Warner)
3610 * optimization: character compare routines now optimize comparing
3611 against a constant character. (reported by Gilbert Baumann)
3612 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3613 argument now works properly on the MIPS platform.
3614 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3615 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3616 declared to have a functional type, does not cause an error
3618 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3619 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3620 * fixed bug: if last continuation of a deleted block has a
3621 destination, this destination should be deleted too. (reported by
3623 * fixed a bug in the bootstrap process: the host compiler's values
3624 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3625 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3626 test case from Patrik Nordebo)
3627 * improved the ability of the disassembler on the PPC platform to
3628 provide helpful disassembly notes.
3629 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3630 the class in more cases than previously.
3631 * bug fix: FILE-POSITION now understands :START and :END for
3632 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3633 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3634 8) data. (thanks to David Lichteblau)
3635 * bug fix: it is possible to add a method to a generic function
3636 without lambda list.
3637 * bug fix: reader failed to signal END-OF-FILE inside an
3638 object representation. (reported by Nikodemus Siivola)
3639 * fixed some bugs revealed by Paul Dietz' test suite:
3640 ** LAST and [N]BUTLAST should accept a bignum.
3641 ** condition slot accessors are methods.
3642 ** (VECTOR NIL) is a subtype of STRING.
3644 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3645 * minor incompatible change: some nonsensical specialized lambda
3646 lists (used in DEFMETHOD) which were previously ignored now signal
3648 * minor incompatible change: the system is now aware of the types of
3649 variables in the COMMON-LISP package, and will signal errors for
3650 most violations of these type constraints (where previously they
3651 were silently accepted).
3652 * minor incompatible change: COMPILE-FILE now uses the freedom
3653 afforded (ANSI 3.2.2.3) to use derived function types for
3654 functions defined in the same file. This also permits the system
3655 to warn on static type mismatches and function
3656 redefinition. (Currently it does not work with high DEBUG level.)
3657 * minor incompatible change: VALUES declaration is disabled.
3658 * When issuing notes, the compiler now signals a condition of type
3659 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3660 restart for use in user handlers. It is expected that the
3661 COMPILER-NOTE condition will eventually become a condition
3662 supertype to a hierarchy of note types, which will then be
3663 handleable in a similar fashion. However, at the moment, no such
3664 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3665 but it's an implementation detail, not a classification for the
3667 * Changes in type checking closed the following bugs:
3668 ** type checking of unused values (192b, 194d, 203);
3669 ** template selection based on unsafe type assertions (192c, 236);
3670 ** type checking in branches (194bc).
3671 * A short form of VALUES type specifier has ANSI meaning (it has
3672 increased the number of situations when SBCL cannot perform type
3674 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3675 keywords or constants is permissible.
3676 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3677 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3678 classes. (thanks to Antonio Martinez)
3679 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3680 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3681 argument to a pretty-print stream. Instead, it leaves any such
3682 operations to DESCRIBE-OBJECT methods.
3683 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3685 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3686 lambda lists. (thanks to David Lichteblau)
3687 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3688 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3689 (thanks to Gerd Moellmann)
3690 * fixed bug 246: increased compilation speed of long
3691 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3693 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3695 * DEFCONSTANT now throws a condition of type
3696 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3697 constant to a non-EQL value; CONTINUE and ABORT restarts
3698 respectively change and preserve the value.
3699 * fixed bug 63: The code walker, part of the implementation of CLOS,
3700 is now better at handling symbol macros.
3701 * bug fix: There is no longer an internal implementation type named
3702 CL:LENGTH. (reported by Raymond Toy)
3703 * bug fix: In macro-like defining macros/special operators the
3704 implicit block does not enclose the lambda list.
3705 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3706 enclosed in parentheses) are not suitable as type specifiers, and
3707 their use properly signals an error now.
3708 * bug fix: An argument count mismatch for a type specifier in code
3709 being compiled no longer causes an unhandled error at compile
3710 time, but signals a compile-time warning.
3711 * fixed simple vector readable printing
3712 * bug fix: DESCRIBE takes more care over whether the class
3713 precedence list slot of a class is bound before accessing it.
3714 (reported by Markus Krummenacker)
3715 * bug fix: FORMATTER can successfully compile pretty-printer format
3716 strings which use variants of the ~* directive inside.
3717 * bug fix: SEARCH now applies its TEST predicate to the elements of
3718 the arguments in the correct order. (thanks to Wolfhard Buss)
3719 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3720 in type inference. (thanks to Robert E. Brown)
3721 * bug fix: Reading in symbols with an explicit package name of ""
3722 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3723 * fixed some bugs revealed by Paul Dietz' test suite:
3724 ** NIL is now allowed as a structure slot name.
3725 ** Arbitrary numbers, not just REALs, are allowed in certain
3726 circumstances in LOOP for-as-arithmetic clauses.
3727 ** Multiple class redefinitions before slot access no longer
3728 causes a type error.
3729 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3730 association between the name and a class.
3731 ** Generic functions with non-standard method-combination and over
3732 five methods all of which return constants no longer return NIL
3733 after the first few invocations. (thanks to Gerd Moellmann)
3734 ** CALL-NEXT-METHOD with no arguments now passes the original
3735 values of the arguments, even in the presence of assignment.
3736 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3738 ** DISASSEMBLE works with closures and funcallable instances.
3739 ** ADD-METHOD now returns the generic function, not the new method.
3740 ** FIND-METHOD signals an error if the lengths of the specializers
3741 is incompatible with the generic function, even if the ERRORP
3743 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3744 which its argument is a member.
3745 ** DEFCLASS only redefines the class named by its class-name
3746 argument if that name is the proper name of the class;
3747 otherwise, it creates a new class.
3748 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3749 of the UNBOUND-SLOT condition to the name of the slot.
3750 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3751 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3752 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3753 SLOT-MAKUNBOUND in the specified fashion.
3755 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3756 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3757 cross-compilation host. As a consequence, we can now bootstrap our
3758 way up to SBCL starting with a bare gcc toolchain and human-readable
3759 source code (first the source to CLISP, then the source to SBCL).
3760 * A contributed module containing a partial implementation of the
3761 simple-streams interface has been included. (thanks to Rudi
3763 * A contributed module implementing the RFC1321 Message Digest
3764 Algorithm, known as MD5, has been included.
3765 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3766 no longer has any effect, as the code controlled by this feature
3767 has been deleted. (As far as we know, no-one has ever built using
3768 this feature, and its semantics were confused in any case).
3769 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3770 work on conditions (as required by the ANSI specification),
3771 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3772 expected behaviour on conditions. Users should note, however,
3773 that such behaviour is not required by the ANSI specification,
3774 and so use of this behaviour may render their code unportable.
3775 * fixed some bugs revealed by Paul Dietz' test suite:
3776 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3778 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3779 ** SXHASH on condition objects no longer returns NIL.
3780 ** :ALLOCATION :CLASS slots are better treated; their values are
3781 updated on class redefinition, and initforms inherited from
3782 superclasses are applied.
3783 ** REMOVE-METHOD returns its generic function argument even when
3784 no method was removed.
3785 ** SHARED-INITIALIZE now initializes the values of the requested
3786 slots, including those with :ALLOCATION :CLASS.
3787 ** ALLOCATE-INSTANCE now works on structure classes defined via
3788 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3790 ** SLOT-EXISTS-P now works on conditions, as well as structures
3792 ** MAKE-LOAD-FORM now has the required methods on
3793 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3794 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3795 keyword, and now implements the SLOT-NAMES argument.
3796 ** methods with &OPTIONAL arguments no longer allow too many
3797 arguments to be passed in the call without error.
3798 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3799 option is consistent with the required arguments of the generic
3800 function lambda list.
3801 * bug fix: REQUIRE accepts a string designator. (Thanks to
3803 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3804 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3805 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3806 * bug fix: The compiler now checks for duplicated variables in macro
3808 * bug fix: SETQ on globals returns the correct value.
3809 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3810 not a COMPILER-ERROR (followed by some other strange error on
3811 choosing the CONTINUE restart).
3812 * bug fix: make.sh and friends are now more consistent in the way that
3813 they look for GNU "make".
3815 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3816 * experimental native threads support (on x86 Linux >=2.4 only).
3817 This is not compiled in by default: you need to add :SB-THREAD to
3818 the target features. See the "Beyond ANSI" chapter of the manual
3820 * fix for longstanding nonANSIism: The old distinction between
3821 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3822 The return value from CL:FIND-CLASS is now a CLOS class, and
3823 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3824 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3825 * An interface to the MetaObject Protocol, as described in Kiczales,
3826 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3827 MIT Press, 1991, is available from the SB-MOP package.
3828 * incompatible change: the SB-PCL package should now be considered
3829 a private implementation detail, and no longer a semi-private MOP
3831 * minor incompatible change: due to rearrangement for threads, the
3832 control stack and binding stack are now allocated at arbitrary
3833 addresses instead of being hardcoded per-port. Users affected by
3834 this probably have to be doing advanced things with shared
3835 libraries, and will know who they are.
3836 * minor incompatible change: Previously, all --eval forms used were
3837 processed with READ before any of them were processed with EVAL.
3838 Now each --eval form is processed with both READ and EVAL before
3839 the next --eval form is processed. (Thus package operations like
3840 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3841 work as the user might reasonably expect.)
3842 * minor incompatible change: *STANDARD-INPUT* is now only an
3843 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3845 * minor incompatible change: Y-OR-N-P is now character-oriented,
3846 not line oriented. Also, YES-OR-NO-P now works without errors.
3847 (thanks to Antonio Martinez)
3848 * sb-aclrepl module improvements: an integrated inspector, added
3849 repl features, and a bug fix to :trace command.
3850 * Known functions, which cannot be open coded by the backend, are
3851 considered to be able to check types of their arguments. (fixing
3852 a bug report by Nathan J. Froyd)
3853 * fixed a bug in computing method discriminating functions: It is
3854 now possible to define methods specialized on classes which have
3855 forward-referenced superclasses. (thanks to Gerd Moellmann)
3856 * fixed evaluation order in optional entries (reported by Gilbert
3858 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3859 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3860 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3861 required-by-AMOP NAME argument, as well as CLASS and
3862 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3863 * fixed bug 20: DEFMETHOD can define methods using names that are
3864 not the proper names of classes to designate class specializers.
3865 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3866 Unix file descriptors, instead of blowing up. (thanks to Antonio
3868 * Garbage collection refactoring: user-visible change is that a
3869 call to the GC function during WITHOUT-GCING will not do garbage
3870 collection until the end of the WITHOUT-GCING. If you were doing
3871 this you were probably losing anyway.
3872 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3873 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3874 TYPEP the latter but not the former.
3875 * The compiler issues a full WARNING for calls to undefined functions
3876 with names from the CL package.
3877 * MAP-INTO for a vector destination is open coded. (reported by
3878 Brian Downing on c.l.l)
3879 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3880 documentation string.
3881 * fixed some bugs revealed by Paul Dietz' test suite:
3882 ** COPY-ALIST now signals an error if its argument is a dotted
3884 ** Condition slots are now accessed more correctly in the presence
3885 of multiple initargs for a given slot.
3886 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3887 exclude restarts of the same name associated with a different
3889 ** DEFCLASS of forward-referenced classes with another
3890 forward-referenced class in the superclasses list no longer
3892 ** Condition slots are now initialized once each, not multiple
3893 times. (thanks to Gerd Moellmann)
3894 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3896 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3897 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3898 arguments contain duplicated elements.
3899 ** RESTART-CASE understands local macros.
3900 ** RESTART-CASE associates exactly its own restarts with a condition.
3901 ** ENDP in safe mode checks its argument to be of type LIST.
3902 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3903 in question is unbound.
3904 ** Optimized MAKE-INSTANCE functions no longer cause internal
3905 assertion failures in the presence of duplicate initargs.
3906 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3907 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3908 propagated even in the ctor optimized implementation of
3910 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3912 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3913 * a better implementation of SXHASH on (simple) bit vectors,
3914 measured both in execution speed and in distribution of results
3915 over the positive fixnums, has been installed. Likewise, a better
3916 implementation of EQUAL for simple bit vectors is now available.
3917 * fixed CEILING optimization for a divisor of form 2^k.
3918 * fixed bug 240 (emitting extra style warnings "using the lexical
3919 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3920 by Antonio Martinez)
3921 * fixed SXHASH, giving different results for NIL depending on type
3922 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3923 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3924 variable. (found by Rolf Wester)
3925 * SBCL does not ignore type declarations for special
3926 variables. (reported by rif on c.l.l 2003-03-05)
3927 * some bug fixes in contrib/sb-aclrepl/
3928 * fixed some bugs revealed by Paul Dietz' test suite:
3929 ** a bug in the CONS type specifier, whereby the CAR and CDR
3930 types got intertwined, has been fixed;
3931 ** the type system is now able to reason about the interaction
3932 between INTEGER and RATIO types more completely;
3933 ** APPEND, [N]REVERSE and NRECONC check that those their
3934 arguments, which must be proper lists, are really so;
3935 ** An array specialized to be unable to hold elements has been
3936 implemented, as required -- yes, really -- by ANSI;
3937 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3938 on malformed property lists;
3940 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3941 * incompatible packaging change: in line with Unix convention,
3942 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3943 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3944 * REQUIRE and PROVIDE are now optionally capable of doing something
3945 useful. See the documentation string for REQUIRE.
3946 * infrastructure for a managed SBCL contrib system: contributed
3947 modules in this release include:
3948 ** the ASDF system definition facility;
3949 ** an interface to the BSD Sockets API;
3950 ** an ACL-like convenience interface to the repl;
3951 (thanks to Kevin Rosenberg)
3952 ** an implementation of ROTATE-BYTE, with efficient implementation
3954 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3955 gives a closer approximation to the right answer than previously.
3956 (thanks to Raymond Toy)
3957 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3958 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3959 optional environment arguments, as required by ANSI.
3960 * fixed bugs in other functions taking environment objects, allowing
3961 calls with an explicit NIL environment argument to be compiled
3963 * fixed bug 228: primary return values from
3964 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3965 COMPILE or FUNCTION.
3966 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3967 :TYPE will no longer signal errors on innocuous objects.
3968 * fixed bug 231b: SETQ is better at respecting type declarations in
3969 the lexical environment.
3970 * fixed a bug in DEFCLASS: classes named by symbols with no or
3971 unprintable packages can now be defined.
3972 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3973 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3974 * fixed compiler failure related to checking types of functions.
3975 (reported by Robert E. Brown)
3976 * the compiler is now much more consistent in its error-checking
3977 treatment of bounding index arguments to sequence functions: in
3978 (SAFETY 3) code, errors will be signalled in almost all cases if
3979 invalid sequence bounding indices are passed to functions defined
3980 by ANSI to operate on sequences.
3981 * fixed a bug in the build procedure: documentation of SBCL-specific
3982 packages is now preserved and available in the final Lisp image.
3983 * lifted FDEFINITION lookup out of loops in the implementation of
3984 many list operations. (thanks to Robert E. Brown)
3985 * fixed a bug in the reader: the #n# reader macro now works for
3986 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3987 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3988 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3989 E. Brown and Tony Martinez respectively)
3990 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3991 SLOT-BOUNDP: in particular, it is now able to optimize them much
3992 better, and is now not vulnerable to having packages renamed.
3993 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3994 always called when a slot is not present in an instance. (thanks
3996 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3997 longer signal an error on unreading a character following EOF on
3998 the previous constituent stream. (thanks to Tony Martinez)
3999 * fixed some bugs revealed by Paul Dietz' test suite:
4000 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4001 not just nonnegative fixnums;
4002 ** the logical bit-array operators such as BIT-AND now accept an
4003 explicit NIL for their "opt-arg" argument (to indicate a
4004 freshly-consed result bit-array);
4005 ** ELT now signals an error on an invalid sequence index in safe
4007 ** the type system is now cleverer about negations of numeric
4008 types, and consequently understands the BIGNUM and RATIO types
4010 ** the type system is now cleverer about the interaction between
4011 INTEGER and RATIO types: while bugs still remain, many more
4012 cases are accurately computed;
4013 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4014 if it is in the last clause;
4015 ** CONSTANTLY now correctly returns a side-effect-free function in
4017 ** DECLARE is no longer treated as a special-operator; in
4018 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4019 * incremented fasl file version number due to the change in the
4020 DEFSTRUCT-SLOT-DESCRIPTION structure.
4022 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4023 * minor incompatible change: code processed by the "interpreter" or
4024 EVAL now has a compilation optimization policy of (DEBUG 2)
4025 (changed from (DEBUG 1)) to improve debuggability of interactive
4026 development, and to allow the use of the debug RETURN command in
4028 * an experimental implementation of the RETURN command for the
4029 debugger has been included. (thanks to Frederik Kuivinen)
4030 * fixed bug 62: constraints were not propagated into a loop.
4031 * fixed bug in embedded calls of SORT (reported and investigated by
4033 * fixed some bugs revealed by Paul Dietz' test suite:
4034 ** printing and reading of arrays with some dimensions having
4035 length 0 (thanks to Gerd Moellmann);
4036 ** BOA constructor with &AUX argument without a default value does
4037 not cause a type error;
4038 ** CONSTANTP now returns true for all self-evaluating objects.
4040 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4041 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4042 accessors that are related by inheritance, as specified in the
4043 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4044 Valtteri Vuorikoski)
4045 * The compiler is now able to inline functions that were defined in
4046 a complex lexical environment (e.g. inside a MACROLET).
4047 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4049 * Support for the upcoming FreeBSD-5.0 release has been included.
4050 (thanks to Dag-Erling Smorgrav)
4051 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4052 effect when it is not in a toplevel context.
4053 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4054 stand a better chance of being correct. (thanks to Gerd
4056 * fixed bug in COERCE, which now signals an error on coercing a
4057 rational to a bounded real type which excludes the expected
4059 * The compiler is now able to derive types more accurately from the
4060 COERCE and COMPILE functions.
4061 * fixed bug 223: functional binding is considered to be constant
4062 only for symbols in the CL package.
4063 * fixed bug 231: SETQ did not check the type of a variable being set
4064 (reported by Robert E. Brown)
4065 * A new optimization for MAKE-INSTANCE has been included, fixing
4066 various bugs (including relating to :ALLOCATION :CLASS slots and
4067 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4069 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4070 ** As required by ANSI, LOOP now disallows anonymous collection
4071 clauses such as COLLECT I in conjunction with aggregate boolean
4072 clauses such as THEREIS (= I 1);
4073 ** LOOP now signals an error when any variable is reused in the
4074 same loop (including the potentially useful construct analogous
4075 to WITH A = 1 WITH A = (1+ A);
4076 ** IT is only a special loop symbol within the first clause of a
4077 conditional loop clause;
4078 ** LOOP with a typed iteration variable over a hashtable now
4079 signals a type error iff it should.
4080 * fixed some other bugs revealed by Paul Dietz' test suite:
4081 ** FILE-STREAM now names the class previously known as FD-STREAM;
4082 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4083 argument) no longer signals an error;
4084 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4085 of the slot symbol, rather than using the current package
4086 ((:CONC-NAME "") continues to intern the slot's name in the
4088 * incremented fasl file version number, because of the incompatible
4089 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4090 of the new implementation of DEFINE-COMPILER-MACRO.
4092 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4093 * Support for building SBCL for MIPS platforms running in
4094 little-endian mode has now been checked in, and basic
4095 functionality on said platforms verified.
4096 * minor incompatible change: PCL now records the pathname of a file
4097 in which methods and the like are defined, rather than its
4099 * minor incompatible change: TRUENAME now considers the truename of
4100 a file naming a directory to be the pathname with :DIRECTORY
4101 component indicating that directory.
4102 * minor incompatible change: a NAMED clause in the extended form of
4103 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4104 reason for the previous behaviour is unclear.
4105 * more systematization and improvement of CLOS and MOP conformance
4106 in PCL (thanks to Gerd Moellman and Pierre Mai):
4107 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4109 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4110 primary methods with no specializers;
4111 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4113 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4114 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4115 FORWARD-REFERENCED-CLASSes; error reporting on
4116 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4118 ** SXHASH on CLOS instances now uses a slot internal to the
4119 instance to return different numbers on distinct instances,
4120 while preserving the same return value through invocations of
4122 ** DEFMETHOD signals errors when methods with longer incongruent
4123 lambda lists are added to generic functions;
4124 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4125 CLASS, as specified in AMOP;
4126 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4127 on the order returned by the primary method for classes of
4128 class STANDARD-CLASS;
4129 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4130 * fixed some bugs shown by Paul Dietz' test suite:
4131 ** DOLIST puts its body in TAGBODY;
4132 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4134 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4135 value producing form;
4136 ** if more variables are given to PROGV than values, extra
4137 variables are bound and made to have no value;
4138 ** NSUBSTITUTE on list arguments gets the right answer with
4140 ** ELT signals an error of type TYPE-ERROR when the index argument
4141 is not a valid sequence index;
4142 ** LOOP signals (at macroexpansion time) an error of type
4143 PROGRAM-ERROR when duplicate variable names are found;
4144 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4145 ** FUNCALL of special-operators now cause an error of type
4147 ** PSETQ now works as required in the presence of side-effecting
4148 symbol-macro places;
4149 ** NCONC accepts any object as its last argument;
4150 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4152 ** loop-for-as-package does not require a package to be explicitely
4154 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4156 * fixed bug 166: compiler preserves "there is a way to go"
4157 invariant when deleting code.
4158 * fixed bug 172: macro lambda lists with required arguments after
4159 &REST arguments now cause an error to be signalled. (thanks to
4161 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4162 bug. (thanks to Matthew Danish)
4163 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4165 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4166 arguments are lexically rebound. (thanks to Gerd Moellmann and
4168 * fixed bug 194: error messages are now more informative when there
4169 is no primary method applicable in a call to a generic
4170 function. (thanks to Gerd Moellmann)
4171 * fixed bug in command line argument checking (thanks to Julian
4173 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4174 (thanks to Matthew Danish)
4175 * incremented fasl file version number, because of the
4176 SXHASH-related changes in the layout of CLOS data structures
4178 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4179 * minor incompatible change: The runtime (the Unix executable named
4180 "sbcl") is now much pickier about the .core files it will load.
4181 Essentially it now requires .core files to descend from the same
4182 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4183 as the runtime does. (The intent is to prevent the crashes which
4184 can occur, and which can even be reported as mysterious failures,
4185 when people patch the sources or change the build parameters
4186 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4187 sbcl and .core files.)
4188 * fixed bug: VALUES-LIST is no longer optimized away.
4189 * fixed bug 142: The FFI conversion of C string values to Lisp
4190 string values no longer conses excessively. (thanks to Nathan
4191 Froyd porting Raymond Toy's fix to CMU CL)
4192 * began to systematize and improve MOP conformance in PCL (thanks to
4193 Nathan Froyd, Gerd Moellman and Pierre Mai):
4194 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4196 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4197 ** FINALIZE-INHERITANCE is now called on class finalization;
4198 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4199 argument precedence order.
4200 * fixed bug 202: The compiler no longer fails on functions whose
4201 derived types contradict their declared type.
4202 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4203 so it can be non-toplevel.
4204 * The fasl file version number has changed (because of the new
4205 implementation of DEFMACRO).
4206 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4207 safe code, that any length requirement by their type-specifier
4208 argument is valid. The exceptions to this are described in bug
4210 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4211 functions now check the types of their inputs as required by ANSI.
4212 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4213 introduced symbol is DECLAREd to be SPECIAL.
4214 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4215 * fixed bug: :COUNT argument to sequence functions may be negative
4216 * fixed bug: body of DO-SYMBOLS may contain declarations
4217 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4218 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4219 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4220 symbol macro only once
4221 * fixed printing of call frame when argument list is unavailable
4222 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4223 * compiler no longer signals WARNING on unknown keyword
4226 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4227 * A beta-quality port to the mips architecture running Linux,
4228 based on the old CMUCL backend, has been made. It has been tested
4229 on a big-endian kernel, and works sufficiently well to be able to
4230 rebuild itself; it has not been tested in little-endian mode.
4231 * fixed an inconsistency between gencgc.c and purify.c which made
4232 dumping/loading .core files unreliable
4233 * fixed bug 120a: The compiler now deals correctly with IFs where
4234 the consequent is the same as the alternative, instead of
4235 misderiving the return type. (thanks to Alexey Dejneka)
4236 * fixed bug 113: Logical pathnames are now dumpable (the logical
4237 host is resolved at load-time, throwing an error if it is not
4239 * fixed bug 174: FORMAT's error message is slightly clearer when a
4240 non-printing character is used in a format directive.
4241 * fixed several bugs in compiler checking of type declarations, i.e.
4242 violations of the Python "declarations are assertions" principle
4243 (thanks to Alexey Dejneka)
4244 * fixed several bugs in PCL's error checking (thanks to Gerd
4246 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4248 * fixed bug in compilation of functions as first class values
4249 (thanks to Antonio Martinez-Shotton)
4250 * The compiler's handling TYPE-ERRORs which it can prove will
4251 inevitably happen at runtime has been cleaned up and corrected
4252 in several ways. (thanks to Alexey Dejneka)
4253 * improved argument type checking for various basic arithmetic
4254 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4255 lavished on them in the past that they can be compiled in many
4256 ways in different special cases
4257 * fixed bug 181: compiler checks validity of user supplied type
4259 * cleaned up code flushing in optimization: Function calls which
4260 should signal errors for safety purposes (e.g. which ANSI says
4261 should signal errors when their arguments are of incorrect type)
4262 are no longer optimized away.
4263 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4264 * incremented fasl file version number, because changes in the
4265 implementation of sequence functions like COERCE caused
4266 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4267 in old inline expansions) to become undefined. (Actually these
4268 changes were later undone, so we might very well be binary
4269 compatible with 0.7.7 after all, but leaving the version number
4270 incremented seemed like the simplest and most conservative
4273 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4274 * An alpha-quality port to the parisc architecture running Linux,
4275 based on the old CMUCL backend, has been made. This, even more so
4276 than the other backends, should be considered still a work in
4277 progress; known problems include that the Linux kernel in 64-bit
4278 mode does not propagate the correct sigcontext structure to
4279 userspace, and consequently SBCL on a parisc64 kernel will not
4281 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4282 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4283 suppressed.) Also now that the compiler is looking at declarations
4284 in the environment, it checks optimization declarations as well,
4285 and suppresses inlining when (> DEBUG SPEED).
4286 * More fixes have been made to treatment of floating point exception
4287 treatment and other Unix signals. In particular, floating point
4288 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4289 * The detection and handling of control stack exhaustion (infinite
4290 or very deeply nested recursion) has changed. Stack exhaustion
4291 detection is now done by write-protecting pages at the OS level
4292 and applies at all optimization settings; when found, a
4293 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4294 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4295 be caught using IGNORE-ERRORS.
4296 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4297 correctly when transforming recursive LABELS functions to LETs.
4298 (thanks to Alexey Dejneka)
4299 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4300 that are names of constants or global variables.
4301 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4302 alien routines with docstrings.
4303 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4304 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4306 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4307 (thanks to Eric Marsden)
4308 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4309 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4310 * Bug fix: The SPARC backend can now compile functions involving
4311 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4312 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4313 to a functions expecting a PATHNAME-DESIGNATOR.
4314 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4315 lambda lists. (thanks to Alexey Dejneka)
4316 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4317 functions so that EXPORTing the name of the class doesn't cause
4318 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4319 to Antonio Martinez for reporting this)
4320 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4321 constant-folded without failing an assertion. (thanks to Einar
4322 Floystad Dorum for reporting this)
4323 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4324 types are now dealt with more correctly by the compiler.
4325 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4326 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4327 behaviour analogous to RENAME-FILE. This puts its behaviour more
4328 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4330 * The fasl file version number has changed again. (because of the
4331 bug fix involving the names of PCL MAKE-INSTANCE functions)
4333 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4334 * bug fix: Floating point exceptions are treated much more
4335 consistently on the x86/Linux and PPC/Linux platforms.
4336 * Array initialization with :INITIAL-ELEMENT is now much faster for
4337 cases when the compiler cannot open code the array creation, but
4338 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4339 array accesses have also seen a speed increase.
4340 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4341 specified. (This was at the root of some bad interactions between
4342 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4344 * bug fix: Internal error arguments for undefined functions are now
4345 computed correctly on the PPC/Linux platform.
4346 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4347 Raymond Toy's patch for CMU CL)
4348 * Support for the Solaris 9 operating environment has been included
4349 (thanks to Daniel Merritt)
4350 * A very ugly but hopefully complete draft of the missing FFI chapter
4351 of the manual has been created by reformatting the corresponding
4352 CMU CL manual chapter into (currently very ugly and incoherent)
4353 DocBook and bringing it up to date for SBCL behavior. Thus, the
4354 manual is now essentially complete, at least by my extreme
4355 once-and-only-once standards, whereby it's acceptable to refer to
4356 the doc strings of SB-EXT functions as the primary documentation.
4357 * The fasl file version number has changed again, due to cleanup of
4358 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4359 is no longer a static symbol.)
4361 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4362 * SBCL now builds with OpenMCL (version 0.12) as the
4363 cross-compilation host; also, more progress has been made toward
4364 bootstrapping under CLISP.
4365 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4367 * bug 158 fixed: The compiler can now deal with integer loop
4368 increments different from 1; fixing this turned out also to fix
4370 * bug 169 fixed: no more bogus warnings about using lexical bindings
4371 despite the presence of perfectly good SPECIAL declarations (thanks
4372 to David Lichteblau)
4373 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4374 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4375 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4377 * bug 180 fixed: Method combination specifications no longer ignore
4378 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4379 * bug fix: Structure type predicate functions now check their argument
4380 count as they should.
4381 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4382 correctly. (thanks to Pierre Mai)
4383 * minor incompatible change: The --noprogrammer option is deprecated
4384 in favor of the new --disable-debugger option, which is very similar.
4385 (The major difference is that it takes effect at a slightly different
4386 time at startup, causing handling of errors in --sysinit and
4387 --userinit files will be affected differently.) The
4388 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4389 been added to allow this functionality to be controlled from ordinary
4390 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4391 maintainers, who might want to run non-interactive scripts to
4392 build SBCL cores which will later be used interactively.)
4393 * minor incompatible change: The LOAD function no longer, when given
4394 a wild pathname to load, loads all files matching that pathname.
4395 Instead, an error of type FILE-ERROR is signalled.
4397 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4398 * bug 147 fixed: The compiler preserves its block link/count
4399 invariants more correctly now so that it doesn't crash. (thanks
4401 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4403 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4404 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4405 no-value-for-this-character as NIL (as specified by ANSI).
4406 * HOST-NAMESTRING on physical pathnames now returns a string that is
4407 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4408 (thanks to Christophe Rhodes)
4409 * The Alpha port handles icache flushing more correctly. (thanks to
4411 * More progress has been made toward bootstrapping under CLISP. (thanks
4412 to Christophe Rhodes)
4413 * The fasl file format has changed again, because dynamic loading
4414 on OpenBSD (which has non-ELF object files) motivated some cleanups
4415 in the way that foreign symbols are transformed and passed around.
4416 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4417 is no longer treated as whitespace by the reader, but instead as
4418 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4419 |A
\7fB|, instead of A as it used to.
4421 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4422 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4423 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4424 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4425 this as of 0.7.1.45, but was left out of the previous news section
4426 (thanks to Dan Barlow)
4427 * SBCL now runs on the Solaris operating system on SPARC architectures
4428 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4429 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4430 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4431 * SPARC backend cleanups, allowing builds of cores optimized for V8
4432 and V9 SPARCS, and also emission of code targeted to a particular
4433 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4435 * SBCL is closer to bootstrapping under CLISP, thanks to various
4436 fixes by Christophe Rhodes.
4437 * The fasl file format has changed again, to allow the compiler's
4438 INFO database to support symbol macros.
4439 * The user manual (in doc/) is formatted into HTML more nicely.
4440 (thanks to coreythomas)
4441 * The system is smarter about SUBTYPEP relationships, especially
4442 those involving NOT types (including types such as ATOM which are
4443 represented internally using NOT types). Thus SUBTYPEP is less
4444 likely to return (VALUES NIL NIL) in general, and in particular
4445 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4447 * The fasl file format has changed again, because the internal
4448 representation of types now includes a new slot to support the new
4449 SUBTYPEP-of-NOT-types logic.
4450 * (not a change in the main branch of SBCL, but a related prototype
4451 which can hopefully be merged into the main branch of SBCL in the
4452 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4453 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4454 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4455 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4456 dispatch macro character combinations. (thanks to Alexey Dejneka)
4457 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4458 that superficially look like logical namestrings correctly.
4459 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4461 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4462 default supplied-p) for &optional and &key arguments. (thanks to
4465 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4466 * incompatible change: The compiler is now less aggressive about
4467 tail call optimization, doing it only when (> SPACE DEBUG) or
4468 (> SPEED DEBUG). (This is an incompatible change because there are
4469 programs which relied on the old CMU-CL-style behavior to optimize
4470 away their unbounded recursion which will now die of stack overflow.)
4471 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4472 for non-GENCGC systems has been increased to 20M (since that
4473 seems much closer to the likely performance optimum for modern
4474 systems than the old 4M value was)
4475 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4476 and *DEBUG-PRINT-LEVEL*
4477 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4478 of CMU CL's support for SPARC, and various endianness and other
4479 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4480 * new syntactic sugar for the Unix command line: --load foo.bar is now
4481 an alternate notation for --eval '(load "foo.bar")'.
4483 ** The system now detects stack overflow and handles it gracefully,
4484 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4485 optimization settings. (This is a good thing in general, and
4486 its introduction in this version should be particularly timely
4487 for anyone whose code fails because of suppression of tail
4489 ** The system now hunts for the C variable "environ" in a more
4490 devious way, to avoid segfaults when the C library version differs
4491 between compile time and run time. (thanks to Christophe Rhodes)
4492 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4493 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4494 ** The compiler no longer issues bogus style warnings for undefined
4495 classes in the same source file as the DEFCLASSes which defined
4496 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4498 ** fixes in CONDITION class precedence list for undefined function
4499 errors (thanks to Alexei Dejneka)
4500 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4501 correctly. (thanks to Dan Barlow)
4502 ** portability fixes aiming at bootstrapping under CLISP (thanks
4503 to Dave McDonald and Christophe Rhodes)
4504 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4505 ** fixes in type translation and and type inference (thanks to
4507 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4508 ** various fixes in the new ports (thanks to Dan Barlow)
4509 * several changes related to debugging:
4510 ** suppression of tail recursion, as noted above
4511 ** stack overflow detection, as noted above
4512 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4513 is now the default. (For some time encapsulation has been more
4514 reliable than the breakpoint-based :ENCAPSULATE NIL
4515 implementation, at least on X86 systems; and I just noticed that
4516 encapsulation also seems closer to the spirit of the ANSI
4519 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4521 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4522 up properly again. (There was a packaging bug in 0.7.0 which
4523 left their definitions in SB-SYS::LOAD-FOREIGN and
4524 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4525 vital for most things which interface to C-level interfaces,
4526 like extensions working with sockets or databases or
4527 Perl-compatible regexes or whatever, and the need to fix
4528 this bug is the main reason that 0.7.1 was released so
4530 ** DEFGENERIC is now choosier about the methods it redefines, so that
4531 reLOADing a previously-LOADed file containing DEFGENERICs does
4532 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4533 cycle now works as it should. (thanks to Alexey Dejneka)
4534 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4535 fixed by Christophe Rhodes. (He actually submitted this patch
4536 months ago, and I delayed until after 0.7.0.)
4537 ** Bug 111 (internal compiler confusion about runtime checks on
4538 FUNCTION types) was fixed by Alexey Dejneka.
4539 * Some internal cleanups (getting rid of variables which aren't
4540 needed now that the byte interpreter is gone) caused the fasl
4541 file format number to change again.
4543 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4544 * major incompatible change: The default fasl file extension, i.e. the
4545 default extension for files produced by COMPILE-FILE, has changed
4546 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4548 ** There are many changes in the implementation of the compiler.
4549 SBCL is now essentially a compiler-only implementation of ANSI
4550 Common Lisp. EVAL still "interprets" a few special cases, but
4551 almost all the interesting cases are handled by creating
4552 a LAMBDA expression, calling COMPILE on it, then calling
4553 FUNCALL on the result.
4554 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4555 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4556 Since the code is newer, there might still be some new bugs
4557 (though not as many as before Martin Atzmueller's fixes:-). But
4558 the new code is substantially simpler and clearer, and hopefully
4559 any remaining bugs will be simpler, less fundamental, and more
4560 fixable then the bugs in the old code.
4561 ** The revised compiler is still a little unsteady on its feet.
4563 *** The debugging information it produces (particularly the names
4564 of FUNCTION objects) is sometimes much less useful than what
4565 the old compiler produced.
4566 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4567 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4568 within a MACROLET) has been temporarily weakened.
4569 ** There are new compiler optimizations for various functions:
4570 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4571 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4572 *** the math functions TRUNCATE, FLOOR, and CEILING
4573 *** the function-of-all-trades COERCE
4574 Mostly these should be transparent, but there's one
4575 potentially-annoying problem (bug 117): when the compiler
4576 inline-expands a function and does type analysis on the result,
4577 it can create control paths which have type mismatches, and
4578 when it can't prove that those control paths aren't taken,
4579 it will issue WARNINGs about the type mismatches. This is
4580 a particular problem in practice for the new sequence functions.
4581 It's not clear how this should be fixed, and for now, a
4582 workaround is given in the entry for 117 in the BUGS file.
4583 ** (Because of the interaction between the two previous items --
4584 occasional inlining problems and new inline expansions -- some
4585 of the new sequence function optimizations won't really kick in
4586 completely until debugging information, and then inlining, are
4587 straightened out in some future version.)
4588 * minor incompatible changes:
4589 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4590 DIRECTORY no longer implicitly promotes NIL slots of its
4591 pathname argument to :WILD. In particular, when you ask for the
4592 contents of a directory (which you used to be able to do without
4593 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4594 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4595 ** changes in behavior that ANSI explicitly defines to be
4596 implementation dependent:
4597 *** The new compiler-only implementation still conforms with ANSI,
4598 but acts a little different than before. Besides the obvious
4599 changes in performance tradeoffs (that the cost per form passed
4600 to EVAL has gone up, and the cost per form executed by EVAL
4601 has gone down), the behavior of the system changes a little
4602 because there are no longer any interpreted function objects.
4603 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4604 e.g. doing COMPILE on the output of interactive DEFUN is
4606 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4608 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4609 has changed from (:CL) to NIL.
4610 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4611 e.g. #\Newline and #\Tab, don't have names specified in the
4612 ANSI Common Lisp standard, is now based on their ASCII symbolic
4613 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4614 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4615 are no longer used for output.
4616 ** changes in internal implementation constants:
4617 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4618 4 million. (If your application spends a lot of time GCing and
4619 you have a lot of RAM, you might want to experiment with
4620 increasing it even more.)
4621 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4622 However, almost all old code should still continue to work without
4623 immediate update, as SB-C-CALL is now a (deprecated) nickname
4625 ** Old operator names in the style DEF-FOO are now deprecated in
4626 favor of new corresponding names DEFINE-FOO, for consistency with
4627 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4628 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4629 internal symbols, but a few supported extensions like
4630 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4631 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4632 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4633 etc. as you get deeper into recursive calls to the debugger
4634 command loop, instead of the old "5]", "5]]", "5]]]"
4635 sequence. (I was motivated to do this when squabbles between
4636 ILISP and SBCL left me very deeply nested in the debugger. In the
4637 short term, this change will probably provoke more ILISP/SBCL
4638 squabbles, but hopefully it will be an improvement in the long run.)
4639 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4640 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4641 function, since declaiming return types involving aliens is
4642 (1) annoyingly messy to do by hand and (2) vital to efficient
4643 compilation of code which calls such functions.
4644 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4645 longer reexported by the SB-EXT package. They're solely useful
4646 for alien code, so it seems more logical that you should get
4647 them from the SB-ALIEN package, not in SB-EXT.
4648 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4649 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4650 features. Instead, the code that they used to control is always
4651 built into the system.
4652 * many other bug fixes
4653 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4654 advantage of the new EVAL-WHEN stuff and to clean them up in
4655 general, and they are now more ANSI-compliant in a number of
4656 ways. Martin Atzmueller is responsible for a lot of this.
4657 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4659 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4660 *** correct ERROR type for various file operations
4661 *** some fixes for Lisp streams
4662 *** DEFMETHOD syntax checking
4663 *** changing old weird representation of debug information as
4664 strings (which, among their other deficiencies, don't transform
4665 correctly when you rename packages, and don't change their
4666 print representation when you change things like *PACKAGE*
4667 and *PRINT-LENGTH*) to symbols and lists of symbols
4668 He also made several improvements and fixed several bugs in DESCRIBE.
4669 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4671 *** misbehavior of WRITE-STRING/WRITE-LINE
4672 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4673 and several other LOOP problems as well
4674 *** DIRECTORY when similar filenames are present
4675 *** DEFGENERIC with :METHOD options
4676 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4677 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4678 *** argument ordering in FIND with :TEST option
4679 *** mishandled package designator argument in APROPOS-LIST
4680 *** various problems in the backquote readmacro
4681 *** a bug in APROPOS
4682 *** probably some others that I'm not describing very well here,
4683 since the CVS log documents them by reference to sbcl-devel
4684 messages, and the SourceForge archives aren't working well.:-(
4685 ** Dan Barlow improved the Alpha port (and is making progress on the
4686 PPC port, for those of you who think different).
4687 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4688 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4689 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4690 continues to work on the SPARC port (for those of you in a position
4691 to look down upon our little PC-compatible boxes from a great height).
4692 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4693 and uses that copy, rather than the current dynamic value, when
4694 it's trying to decide whether to truncate output. Thus e.g.
4695 (let ((*print-lines* 50))
4696 (pprint-logical-block (stream nil)
4698 (let ((*print-lines* 8))
4699 (print (aref possiblybigthings i) stream)))))
4700 should now truncate the logical block only at 50 lines, instead of
4701 often truncating it at 8 lines, as it did before.
4702 * The doc/cmucl/ directory, containing old CMU CL documentation
4703 from the time of the fork, is no longer part of the base system.
4704 SourceForge has shut down its anonymous FTP service, and with it
4705 my original plan for distributing the old CMU CL documentation
4706 there. For now, if you need these files you can download an old
4707 SBCL source release and extract them from it.
4708 * The fasl file version number changed again, for dozens of reasons,
4709 some of which are apparent above.
4711 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4712 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4713 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4714 patch, so that DISASSEMBLE output is much nicer.
4715 * The code in the SB-PROFILE package now seems reasonably stable.
4716 I still haven't decided what the final interface should look like
4717 (I'd like PROFILE to interact cleanly with TRACE, since both
4718 facilities use function encapsulation) but if you have a need
4719 for profiling now, you can probably use it successfully with
4720 the current CMU-CL-style interface.
4721 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4722 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4723 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4724 link now returns the dangling link itself, and for similar
4725 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4726 link itself. (In these cases the old code signalled an error and
4727 looped endlessly, respectively.) Thus, DIRECTORY now works even
4728 in the presence of dangling and cyclic symbolic links.
4729 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4730 is now a supported extension again, since the consensus on
4731 sbcl-devel was that it can be useful for ordinary development
4732 work, not just for debugging SBCL itself.
4733 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4734 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4735 that currently-defined functions might be redefined later with
4736 different return types.
4737 * Hash tables can be printed readably, as inspired by CMU CL code
4738 of Eric Marsden and SBCL code of Martin Atzmueller.
4739 * better error handling in CLOS method combination, thanks to
4740 Martin Atzmueller porting Pierre Mai's CMU CL patches
4741 * more overflow fixes for >16Mbyte I/O buffers
4742 * A bug in READ has been fixed, so that now a single Ctrl-D
4743 character suffices to cause end-of-file on character streams.
4744 In particular, now you only need one Ctrl-D at the command
4745 line (not two) to exit SBCL.
4746 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4748 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4749 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4750 does the right thing.
4751 * The implementation of some type tests, especially for CONDITION
4752 types, is now tidier and maybe faster, due to CMU CL code
4753 originally by Douglas Crosher, ported by Martin Atzmueller.
4754 * Some math functions have been fixed, and there are new
4755 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4756 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4757 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4758 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4759 likely to be built into sbcl-0.7.0.)
4760 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4761 CL, ported to SBCL by Martin Atzmueller)
4762 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4763 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4764 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4765 * There's a new slam.sh hack to shorten the edit/compile/debug
4766 cycle for low-level changes to SBCL itself, and a new
4767 :SB-AFTER-XC-CORE target feature to control the generation of
4768 the after-xc.core file needed by slam.sh.
4769 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4770 COMPILE-FILE is no longer supported, so that now every function
4771 gets an entry point, so that block compilation looks a little
4772 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4773 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4774 returns the number of bytes consed since the system started,
4775 rather than the number consed since the first time the function
4776 was called. (The new definition parallels ANSI functions like
4777 CL:GET-INTERNAL-RUN-TIME.)
4778 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4779 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4780 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4781 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4782 * Fasl file version numbers are now independent of the target CPU,
4783 since historically most system changes which required version
4784 number changes have affected all CPUs equally. Similarly,
4785 the byte fasl file version is now equal to the ordinary
4788 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4789 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4790 is no longer recognized. I apologize for this, because it was
4791 listed in SB-EXT as a supported extension, but I found that
4792 its existing behavior was poorly specified, as well as incorrectly
4793 specified, and it looked like too much of a mess to straighten it
4794 out. I have enough on my hands trying to get ANSI stuff to work..
4795 * many patches ported from CMU CL by Martin Atzmueller, with
4796 half a dozen bug fixes in pretty-printing and the debugger, and
4797 half a dozen others elsewhere
4798 * fixed bug 13: Floating point infinities are now supported again.
4799 They might still be a little bit flaky, but thanks to bug reports
4800 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4801 as flaky as they were.
4802 * The --noprogrammer command line option is now supported. (Its
4803 behavior is slightly different in detail from what the old man
4804 page claimed it would do, but it's still appropriate under the
4805 same circumstances that the man page talks about.)
4806 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4807 are now supported, and enabled by default. Thus, the compiler can
4808 handle many floating point and complex operations much less
4809 inefficiently. (Thus e.g. you can implement a complex FFT
4811 * The compiler now detects type mismatches between DECLAIM FTYPE
4812 and DEFUN better, and implements CHECK-TYPE more correctly, and
4813 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4814 thanks to patches from Martin Atzmueller.
4815 * various fixes to make the cross-compiler more portable to
4816 ANSI-conforming-but-different cross-compilation hosts (notably
4817 Lispworks for Windows, following bug reports from Arthur Lemmens)
4818 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4819 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4820 fixed thanks to Pierre Mai's CMU CL patches.
4821 * fixes to keep the system from overflowing internal counters when
4822 it tries to use i/o buffers larger than 16M bytes
4823 * fixed bug 45a: Various internal functions required to support
4824 complex special functions have been merged from CMU CL sources.
4825 (When I was first setting up SBCL, I misunderstood a compile-time
4826 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4827 * improved support for type intersection and union, fixing bug 12
4828 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4829 more obscure bugs as well
4830 * some steps toward byte-compiling non-performance-critical
4831 parts of the system, courtesy of patches from Martin Atzmueller
4832 * Christophe Rhodes has made some debian packages of sbcl at
4833 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4834 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4835 stable, but are nonetheless usable. When he's ready, I'd be happy
4836 to add them to the SourceForge "File Releases" section. (And if
4837 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4838 * new fasl file format version number (because of changes in
4839 internal representation of (OR ..) types to accommodate the new
4840 support for (AND ..) types, among other things)
4842 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4843 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4845 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4847 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4848 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4849 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4850 * DESCRIBE now works on structure objects again.
4851 * Most function call argument type mismatches are now handled as
4852 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4853 know whether the function will be redefined before the call is
4854 executed. (The compiler could flag local calls with full WARNINGs,
4855 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4856 it doesn't keep track of enough information to know whether calls
4857 are local in this sense.)
4858 * Compiler output is now more verbose, with messages truncated
4859 later than before. (There should be some supported way for users
4860 to override the default verbosity, but I haven't decided how to
4861 provide it yet, so this behavior is still controlled by the internal
4862 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4863 src/compiler/ir1util.lisp.)
4864 * Fasl file format version numbers have increased again, because
4865 support for the Gray streams extension changes the layout of the
4866 system's STREAM objects.
4867 * The Gray subclassable streams extension now works, thanks to a
4868 patch from Martin Atzmueller.
4869 * The full LOAD-FOREIGN extension (not just the primitive
4870 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4871 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4872 but like most other programs, it defaults to copying the Unix
4873 environment from the original process instead of starting the
4874 new process in an empty environment.
4875 * Extensions which manipulate the Unix environment now support
4876 an :ENVIRONMENT keyword option which doesn't smash case or
4877 do other bad things. The CMU-CL-style :ENV option is retained
4878 for porting convenience.
4879 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4880 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4882 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4884 * A patch from Martin Atzmueller seems to have solved the SIGINT
4885 problem, and as far as we know, signal-handling now works cleanly.
4886 (If you find any new bugs, please report them!)
4887 * The system no longer defaults Lisp source file names to types
4888 ".l", ".cl", or ".lsp", but only to ".lisp".
4889 * The compiler no longer uses special default file extensions for
4890 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4891 seems to expect a single default extension for all compiled code,
4892 and there's no compelling reason to try to stretch the standard
4893 to allow two different extensions.) Instead, byte-compiled files
4894 default to the same extension as native-compiled files.
4895 * Fasl file format version numbers have increased again, because
4896 a rearrangement of internal implementation packages made some
4897 dumped symbols in old fasl files unreadable in new cores.
4898 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4899 many fewer weird special cases.
4900 * Bug #17 (differing COMPILE-FILE behavior between logical and
4901 physical pathnames) has been fixed, and some related misbehavior too,
4902 thanks to a patch from Martin Atzmueller.
4903 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4904 by Tim Moore, ported to SBCL by Martin Atzmueller.
4905 * Martin Atzmueller fixed several filesystem-related problems,
4906 including bug #36, in part by porting CMU CL patches, which were
4907 written in part by Paul Werkowski.
4908 * More compiler warnings in src/runtime/ are gone, thanks to
4909 more patches from Martin Atzmueller.
4910 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4913 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4915 * DESCRIBE now works on CONDITION objects.
4916 * The debugger now handles errors which arise when trying to print
4917 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4919 * The build system now uses an additional file, customize-target-features.lisp,
4920 to allow local modifications to the target *FEATURES* list. (The point of
4921 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4922 debugging features enabled, without having to worry about propagating it
4923 into everyone's system when I do a "cvs update".) When no
4924 customize-target-features.lisp file exists, the target *FEATURES* list
4925 should be constructed the same way as before.
4926 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4927 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4928 warn about behavior which is undefined under the ANSI spec. Note: This
4929 is specified by ANSI, but it's not very popular with programmers.
4930 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4931 macro in the SBCL sources for an example of a workaround which you
4932 might use to make portable ANSI-standard code which does what you want.
4933 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4934 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4935 when it's used as a non-toplevel form. (This is required in order
4936 to implement the DEFCONSTANT-EQX macro.)
4937 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4938 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4939 funny things, due to bugs in the implementation of EVAL-WHEN
4940 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4941 non-toplevel DEFCONSTANTs are uncommon.)
4942 * The core file version number and fasl file version number have been
4943 incremented, because the old noncompliant DEFCONSTANT behavior involved
4944 calling functions which no longer exist, and because I also took the
4945 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4946 * fixed bug 1 (error handling before read-eval-print loop starts), and
4947 redid debugger restarts and related debugger commands somewhat while
4949 ** The QUIT debugger command is gone, since it did something
4950 rather different than the SB-EXT:QUIT command, and since it never
4951 worked properly outside the main toplevel read/eval/print loop.
4952 Invoking the new TOPLEVEL restart provides the same functionality.
4953 ** The GO debugger command is also gone, since you can just invoke
4954 the CONTINUE restart directly instead.
4955 ** The TOP debugger command is also gone, since it's redundant with the
4956 FRAME 0 command, and since it interfered with abbreviations for the
4958 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4960 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4961 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4962 some porting work by Martin Atzmueller)
4963 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4964 with a boatload of patches which he ported to SBCL. Now that those
4966 ** The system tries to make sure that its low-priority messages
4967 are prefixed by semicolons, to help people who like to use
4968 syntax highlighting in their ILISP buffer. (This patch
4969 was originally due to Raymond Toy.)
4970 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4971 patches originally written by Raymond Toy.
4972 ** The compiler understands coercion between single-value and
4973 multiple-VALUES type expressions better, getting rid of some very
4974 weird behavior, thanks to patches originally by Robert MacLachlan
4975 and Douglas Crosher.
4976 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4977 lambda lists, thanks to a patch originally by Pierre Mai.
4978 ** The system no longer bogusly warns about "abbreviated type
4980 ** The compiler gets less confused by inlining and RETURN-FROM,
4981 thanks to some patches originally by Tim Moore.
4982 ** The system no longer hangs when dumping circular lists to fasl
4983 files, thanks to a patch originally from Douglas Crosher.
4984 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4985 undefined function error.
4986 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4987 in structure slot initforms) for now, documented workaround instead:-|
4988 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4989 * fixed bug 5: added stubs for various Gray stream functions called
4990 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4991 installed, at least appropriate type errors are generated
4992 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4993 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4994 consistently in DEFMETHOD forms.
4995 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4996 it doesn't seem to affect SBCL after all
4997 * The C runtime system now builds with better optimization and many
4998 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5000 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5002 * The system is now under CVS at SourceForge (instead of the
5003 CVS repository on my home machine).
5004 * The new signal handling code has been tweaked to treat register
5005 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5006 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5007 downstream, e.g. in debug-int.lisp, has implicit dependencies
5008 on the unsignedness of integer representation of machine words,
5009 and that caused the system to bomb out with infinite regress
5010 when trying to recover from type errors involving signed values,
5011 e.g. (BUTLAST '(1 2 3) -1).)
5012 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5013 (This was one of the bugs Peter Van Eynde reported back in July.)
5014 * The system now uses code inspired by Colin Walters' O(N)
5015 implementation of MAP (from the cmucl-imp@cons.org mailing
5016 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5017 inline the MAP operation, and there is more than one
5018 sequence argument to the MAP call (so that it can't just
5019 do ETYPECASE once and for all based on the type of the
5020 single sequence argument). (The old non-inline implementation
5021 of the general M-argument sequence-of-length-N case required
5022 O(M*N*N) time when any of the sequence arguments were LISTs.)
5023 * The QUIT :UNIX-CODE keyword argument has been renamed to
5024 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5025 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5027 * Raymond Wiker's patches to port dynamic loading from Linux to
5028 FreeBSD have been added.
5029 * The BUGS file is now more nearly up to date, thanks in large part
5030 to Martin Atzmueller's review of it.
5031 * The debugger now flushes standard output streams before it begins
5032 its output ("debugger invoked" and so forth).
5033 * The core version number and fasl file version number have both
5034 been incremented, because of incompatible changes in the layout
5036 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5037 used to not be called for a saved Lisp image.)
5038 * Martin Atzmueller's version of a patch to fix a compiler crash,
5039 as posted on sbcl-devel 13 September 2000, has been installed.
5040 * Instead of installing Martin Atzmueller's patch for the
5041 compiler transform for SUBSEQ, I deleted the compiler transform,
5042 and transforms for some similar consing operations.
5043 * A bug in signal handling which kept TRACE from working on OpenBSD
5045 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5046 away by constant folding
5047 * The system now defines its address space constants in one place
5048 (in the Lisp sources), and propagates them automatically elsewhere
5049 (through GENESIS and the sbcl.h file). Therefore, patching the
5050 address map is less unnecessarily tedious and error-prone. The
5051 Lisp names of address space constants have also been systematized.
5052 * CVS tags like dollar-Header-dollar have been removed from
5053 the sources, because they have never saved me trouble and
5054 they've been source of trouble working with patches and other
5055 diff-related operations.
5056 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5057 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5059 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5061 * The system has been ported to OpenBSD.
5062 * The system now compiles with a simple "sh make.sh" on the systems
5063 that it's supported on. I.e., now you no longer need to tweak
5064 text in the target-features.lisp-expr and symlinks in src/runtime/
5065 by hand, the make.sh takes care of it for you.
5066 * The system is no longer so grossly inefficient when compiling code
5067 involving vectors implemented as general (not simple) vectors (VECTOR T),
5068 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5069 which dares to use the various sequence functions on non-simple
5070 vectors, takes less of a performance hit.
5071 * There is now a primitive type predicate VECTOR-T-P
5072 to test for the (VECTOR T) type, so that e.g.
5073 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5074 can now be compiled with some semblance of efficiency. (The old code
5075 turned the type declaration into a full call to %TYPEP at runtime!)
5076 * AREF on (VECTOR T) is still not fast, since it's still compiled
5077 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5078 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5079 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5080 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5081 without making full calls to SUBTYPEP at runtime.
5082 (Some analogous efficiency issues for non-simple vectors specialized to
5083 element types other than T, or for non-simple multidimensional arrays,
5084 have not been addressed. They could almost certainly be handled the
5085 same way if anyone is motivated to do so.)
5086 * The changes in array handling break binary compatibility, so
5087 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5088 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5089 instead of (VALUES T T).
5090 * By following the instructions that Dan Barlow posted to sbcl-devel
5091 on 2 July 2000, I was able to enable primitive dynamic object
5092 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5093 functionality is not implemented (since it calls ld to resolve
5094 library references automatically, requiring RUN-PROGRAM for its
5095 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5096 try to resolve library references) is now supported.
5097 * The system now flushes the standard output streams when it terminates,
5098 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5099 them at several other probably-convenient times, e.g. in each pass of
5100 the toplevel read-eval-print loop, and after evaluating a form given
5101 as an "--eval" command-line option. (These changes were motivated by a
5102 discussion of stream flushing issues on cmucl-imp in August 2000.)
5103 * The source transform for TYPEP of array types no longer assumes
5104 that an array whose element type is a not-yet-defined type
5105 is implemented as an array of T, but instead punts, so that the
5106 type will be interpreted at runtime.
5107 * There is now some support for cross-compiling in make.sh: each of
5108 the phases of make.sh has its own script. (This should be transparent
5109 to people doing ordinary, non-cross-compile builds.)
5110 * Since my laptop doesn't have hundreds of megabytes of memory like
5111 my desktop machine, I became more motivated to do some items on
5112 my to-do list in order to reduce the size of the system a little:
5113 ** Arrange for various needed-only-at-cold-init things to be
5114 uninterned after cold init. To support this, those things have
5115 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5116 symbols with such names are now uninterned after cold init).
5117 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5118 fasl files for cold load.
5119 ** Remove the old compiler structure pooling code (which used to
5120 be conditional on the target feature :SB-ALLOC) completely.
5121 ** Redo the representation of some data in cold init to be more compact.
5122 (I also looked into supporting byte compiled code at bootstrap time,
5123 which would probably reduce the size of the system a lot, but that
5124 looked too complicated, so I punted for now.)
5125 * The maximum signal nesting depth in the src/runtime/ support code has
5126 been reduced from 4096 to 256. (I don't know any reason for the very
5127 large old value. If the new smaller value turns out to break something,
5128 I'll probably just bump it back up.)
5129 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5131 * Many, many bugs reported by Peter Van Eynde have been added to
5132 the BUGS list; some have even been fixed.
5133 * While enabling dynamic object file loading, I tried to make the
5134 code easier to understand, renaming various functions and variables
5135 with less ambiguous names, and changing some function calling
5136 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5137 * While trying to figure out how to do the OpenBSD port, I tried to
5138 clean up some of the code in src/runtime/. In particular, I dropped
5139 support for non-POSIX signal handling, added various comments,
5140 tweaked the code to reduce the number of compilation warnings, and
5141 renamed some files to increase consistency.
5142 * To support the new automatic configuration functionality in make.sh,
5143 the source file target-features.lisp-expr has been replaced with the
5144 source file base-target-features.lisp-expr and the machine-generated
5145 file local-target-features.lisp-expr.
5146 * fixed a stupid quoting error in make.sh so that using CMU CL
5147 "lisp -batch" as cross-compilation host works again
5149 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5151 * DESCRIBE no longer tries to call itself recursively to describe
5152 bound/fbound values, so that it no longer fails on symbols which are
5153 bound to themselves (like keywords, T, and NIL).
5154 * DESCRIBE now works on generic functions.
5155 * The printer now prints less-screwed-up representations of closures
5156 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5157 * A private symbol is used instead of the :EMPTY keyword previously
5158 used to mark empty slots in hash tables. Thus
5159 (DEFVAR *HT* (MAKE-HASH-TABLE))
5160 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5161 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5162 now does what ANSI says that it should. (You can still get
5163 similar noncompliant behavior if bang on the hash table
5164 implementation with all the symbols you get back from
5165 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5166 This breaks binary compatibility, since tests for equality to
5167 :EMPTY are wired into things like the macroexpansion of
5168 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5170 * There's now a minimal placeholder implementation for CL:STEP,
5171 as required by ANSI.
5172 * An obscure bug in the interaction of the normal compiler, the byte
5173 compiler, inlining, and structure predicates has been patched
5174 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5175 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5177 * Missing ordinary arguments in a macro call are now detected even
5178 when the macro lambda list contains &KEY or &REST.
5179 * The debugger no longer complains about encountering the top of the
5180 stack when you type "FRAME 0" to explicitly instruct it to go to
5181 the top of the stack. And it now prints the frame you request even
5182 if it's the current frame (instead of saying "You are here.").
5183 * As specified by ANSI, the system now always prints keywords
5184 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5186 * The default initial SIZE of HASH-TABLEs is now smaller.
5187 * Type information from CLOS class dispatch is now propagated
5188 into DEFMETHOD bodies, so that e.g.
5189 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5191 is now basically equivalent to
5192 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5193 (DECLARE (TYPE SINGLE-FLOAT X))
5195 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5196 operation, without having to do run-time type dispatch.
5197 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5198 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5199 * Since I don't seem to be making big file reorganizations very often
5200 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5201 is overflowing my ability to conveniently back them up), I've finally
5202 checked the system into CVS. (The CVS repository is on my home system,
5203 not at SourceForge -- putting it on SourceForge might come later.)
5204 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5205 high-level GC-NOTIFY-FOO functions send their output. (There's
5206 still very little control of where low-level verbose GC functions
5207 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5208 less than it used to -- the GC-NOTIFY-FOO functions are now under
5209 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5210 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5211 in only one place in the source code, and propagates it automatically
5212 everywhere that it's needed. Thus e.g. when I bump the version from
5213 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5214 * The C source files now include boilerplate legalese and documentation
5215 at the head of each file (just as the Lisp source files already did).
5216 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5217 to his page will be replaced with a link to his new CLiki service.
5219 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5221 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5222 * The build process now looks for GNU make under the default name "gmake",
5223 instead of "make" as it used to. If GNU make is not available as "gmake"
5224 on your system, you can change this default behavior by setting the
5225 GNUMAKE environment variable.
5226 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5227 can build without error under CMU CL.
5229 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5231 * There is now a partial SBCL user manual (with some new text and some
5232 text cribbed from the CMU CL manual).
5233 * The beginnings of a profiler have been added (starting with the
5234 CMU CL profiler and simplifying and cleaning up). Eventually the
5235 main interface should be through the TRACE macro, but for now,
5236 it's still accessed through vaguely CMU-CL-style functions and macros
5237 exported from the package SB-PROFILE.
5238 * Some problems left over from porting CMU CL to the new
5239 cross-compilation bootstrap process have been cleaned up:
5240 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5241 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5242 part when getting rid of the compiler *BACKEND* stuff.)
5243 ** The value of *NULL-TYPE* was screwed up, because it was
5244 being initialized before the type system knew the final
5245 definition of the 'NULL type. This screwed up several key
5246 optimizations in the compiler, causing inefficiency in all sorts
5247 of places. (I found it because I wanted to understand why
5248 GET-INTERNAL-RUN-TIME was consing.)
5249 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5250 PROCLAIM FTYPE information. Unfortunately this broke binary
5251 compatibility again, since now the forms output by DEFGENERIC
5252 to refer to functions which didn't exist in 0.6.3.
5253 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5254 can use the new (as of 0.6.3) transform for SOME into MAP into
5256 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5257 values to (INTEGER 0 1000000), so that the time code will no longer
5258 occasionally get blown up by Linux returning 1000000 microseconds
5259 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5260 its output conform to the ANSI spec. (Alas, this makes its output
5261 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5262 * A full call to MAP NIL with a single sequence argument no longer conses.
5263 * fixes to problems pointed out by Martin Atzmueller:
5264 * The manual page no longer talks about multiprocessing as though
5265 it were currently supported.
5266 * The ILISP support patches have been removed from the distribution,
5267 because as of version 5.10.1, ILISP now supports SBCL without us
5268 having to maintain patches.
5269 * added a modified version of Raymond Toy's recent CMU CL patch for
5270 EQUALP comparison of HASH-TABLE
5272 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5274 * The system still can't cross-compile itself with
5275 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5276 entails), but at least it can compile more of itself that way
5277 than it used to be able to, and various buglets which were uncovered
5278 by trying to cross-compile itself that way have now been fixed.
5279 * This release breaks binary compatibility again. This time
5280 at least I've incremented the FASL file format version to 2, so that the
5281 problem can be detected reliably instead of just causing weird errors.
5282 * various new style warnings:
5283 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5284 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5285 ** using the lexical binding of a variable named in the *FOO* style
5286 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5287 as specified by ANSI.
5288 * *RANDOM-STATE* is no longer automatically initialized from
5289 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5290 default behavior of the system is to repeat its behavior every time
5291 it's run. If you'd like to change this behavior, you can always
5292 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5293 old convention there was no comparably easy way to get the system to
5294 repeat its behavior every time it was run.
5295 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5296 FTYPE declarations has been removed, in favor of their ANSI
5297 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5298 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5299 the types of their sequence arguments can be determined at compile time.
5300 This is done through a new open code expansion for MAP which eliminates
5301 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5302 argument types can be determined at compile time.
5303 * The optimizer now transforms COERCE into an identity operation when it
5304 can prove that the coerced object is already of the correct type. (This
5305 can be a win for machine generated code, including the output of other
5306 optimization transforms, such as the MAP transform above.)
5307 * Credit information has been moved from source file headers into CREDITS.
5308 * Source file headers have been made more standard.
5309 * The CASE macro now compiles without complaining even when it has
5312 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5314 * (Note that the way that the PCL macroexpansions were rewritten
5315 to accommodate the change in DEFGENERIC below breaks binary
5316 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5317 not run under sbcl-0.6.2. Once we get out of alpha releases,
5318 i.e. hit release 1.0.0, we'll probably try to maintain binary
5319 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5320 and sbcl-1.4.4. Until then, however, it might be fairly common
5321 for maintenance releases to break binary compatibility.)
5322 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5324 * The reporting of unhandled signals has been changed to print some
5325 explanatory text as well as the report form. (Previously only
5326 the report form was printed.)
5327 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5328 it defines, so that the compiler no longer issues undefined function
5329 warnings for compiled-but-not-yet-loaded generic functions.
5330 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5331 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5332 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5333 section of the ANSI spec are supported.
5334 * The "" nickname for the "KEYWORD" package has been removed.
5335 The reader still handles symbol tokens which begin with a package marker
5336 as keywords, but it doesn't expose its mechanism for doing so in the
5337 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5338 * The system now issues STYLE-WARNINGs for contradictory TYPE
5339 proclamations. (Warnings for contradictory FTYPE proclamations would
5340 be nice too, but those can't be done usefully unless the type system
5341 is made smarter about FUNCTION types.)
5342 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5343 systematized, so that "*target-*.lisp is supposed to exist only on the
5344 target and imply that there's a related file which exists on the
5345 host, and *host-*.lisp is supposed to exist only on the host and imply
5346 that there's a related file which exists on the target. This involves a
5347 lot of renaming. Hopefully the acute confusion caused by the renaming
5348 will be justified by the reduction in chronic confusion..
5349 ** runtime-type.lisp -> early-target-type.lisp
5350 ** target-type.lisp -> late-target-type.lisp
5351 ** early-host-format.lisp -> early-format.lisp
5352 ** late-host-format.lisp -> late-format.lisp
5353 ** host-error.lisp -> misc-error.lisp
5354 ** early-error.lisp -> early-target-error.lisp
5355 ** late-error.lisp -> late-target-error.lisp
5356 ** host-defboot.lisp -> early-defboot.lisp
5357 ** code/misc.lisp -> code/target-misc.lisp
5358 ** code/host-misc.lisp -> code/misc.lisp
5359 ** code/numbers.lisp -> code/target-numbers.lisp
5360 ** code/early-numbers.lisp -> numbers.lisp
5361 ** early-host-type.lisp -> early-type.lisp
5362 ** late-host-type.lisp -> late-type.lisp
5363 ** host-typep.lisp -> typep.lisp
5364 ** load.lisp -> target-load.lisp
5365 ** host-load.lisp -> load.lisp
5366 ** host-disassem.lisp -> disassem.lisp
5367 ** host-insts.lisp -> insts.lisp
5368 ** byte-comp.lisp -> target-byte-comp.lisp
5369 ** host-byte-comp.lisp -> byte-comp.lisp
5370 ** host-signal.lisp -> signal.lisp
5371 ** host-defstruct.lisp -> defstruct.lisp
5372 ** late-target-type.lisp -> deftypes-for-target.lisp
5373 Furthermore, several other previously target-only files foo.lisp (e.g.
5374 hash-table.lisp and random.lisp) have been split into a target-and-host
5375 foo.lisp file and a target-only target-foo.lisp file, with their key type
5376 definitions in the target-and-host part, so that the cross-compiler will
5377 know more about target types.
5378 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5379 gone away. In their place are various *BACKEND-FOO* variables
5380 corresponding to the slots of the old structure.
5381 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5382 into the target SBCL has been fixed.
5383 * The chill.lisp system for loading cold code into a running SBCL
5385 * Support for the CMU CL "scavenger hook" extension has been removed.
5386 (It was undocumented and unused in the CMU CL sources that SBCL was
5387 derived from, and stale in sbcl-0.6.1.)
5388 * Various errors in the cross-compiler type system were detected
5389 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5390 (enabling various consistency checks). Many of them were fixed,
5391 but some hard problems remain, so the compiler is back to
5392 running without *TYPE-SYSTEM-INITIALIZED* for now.
5393 * As part of the cross-compiler type system cleanup, I implemented
5394 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5395 * I have started adding UNCROSS calls throughout the type system
5396 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5397 on cross-compiler input files will be able to go away, and various
5399 * CONSTANTP now returns true for quoted forms (as explicitly required
5402 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5404 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5405 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5406 (MAKE-LIST -1). In the longer term, it ought to become true
5407 that declarations are assertions even at SAFETY 1. For now, it's not
5408 quite true even at SAFETY 3, but it's at least more nearly true..
5409 (Note that this change seems to increases the size of the system by
5410 O(5%) and to decrease the speed of the compiler by 20% or more.)
5411 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5412 for the problem of printing dozens of lines of distracting information
5413 about low-level system machinery as part of the top stack frame
5414 on entry to the debugger when an undefined function was called.
5415 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5416 is not reset to COMMON-LISP-USER.
5417 * Compilation of stuff related to dyncount.lisp has been made conditional
5418 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5419 smaller. The various dyncount-related symbols have been moved into
5420 a new "SB-DYNCOUNT" package.
5421 * tty-inspect.lisp has been renamed to inspect.lisp.
5422 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5423 feature has gone away. (When we eventually port to other flavors of
5424 libc and/or Unix, we'll try to make the differences between flavors
5425 invisible at the user level.)
5426 * Various other *FEATURES* tags, and/or their associated conditionals,
5427 have been removed if obsolescent, or given better documentation, or
5428 sometimes given more-mnemonic names.
5430 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5432 * tidied up "make.sh" script
5433 * tidied up system directory structure
5434 * better "clean.sh" behavior
5435 * added doc/FOR-CMUCL-DEVELOPERS
5436 * many many small tweaks to output format, e.g. removing possibly-confusing
5437 trailing #\. character in DESCRIBE-INSTANCE
5438 * (EQUALP #\A 'A) no longer signals an error.
5439 * new hashing code, including EQUALP hashing
5440 * tidied up Lisp initialization and toplevel
5441 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5442 * command line argument processing
5443 * added POSIX-GETENV function to deal with Unix-ish environment variables
5444 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5445 terminating SBCL on EOF
5446 * non-verbose GC by default
5447 * There is no more "sbcl" shell script; the sbcl file is now the C
5448 runtime executable (just like CMU CL).
5449 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5451 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5452 symbol and package information as Lisp native symbol and package objects
5453 instead of strings naming symbols and strings naming packages. This way,
5454 whenever packages are renamed (as in warm init), debug information is
5455 transformed along with everything else.
5456 * tweaked the optimization policy declarations which control the building
5457 of SBCL itself. Now, among other things, the system no longer saves
5458 source location debugging information. (This helps two problems at once
5459 by reducing SBCL size and by keeping SBCL from trying to look for its
5460 sources -- which may not exist -- when reporting errors.)
5461 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5462 debugging and testing purposes
5463 * cleaned up printing, making the printer call PRINT-OBJECT for
5464 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5465 methods, giving nearly-ANSI behavior
5466 * converted almost all special variables to use *FOO* naming convention
5467 * deleted PARSE-TIME functionality, since it can be done portably
5468 * moved some files out of cold init into warm init
5469 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5471 * regularized formatting of source files
5472 * added an install.sh script
5473 * fixed ridiculous memory usage of cross-compiler by making
5474 compiler/alloc.lisp not try to do pooling unless it can hook
5475 itself into the GC of the cross-compilation host. Now the system
5476 builds nicely on my old laptop.
5477 * added :SB-ALLOC in target-features.lisp-expr
5478 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5479 was not implemented)
5480 * re-did condition handling and note reporting in the compiler. Notes
5481 are no longer handled by signalling conditions. Style warnings
5482 and warnings are handled more correctly and reported in such a way
5483 that it's easy to find one or the other in your output (so that you
5484 can e.g. figure out which of many problems caused COMPILE-FILE to
5486 * changed the severity of several compiler warnings from full WARNING
5487 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5488 compiler note reporting so that it doesn't use the condition system
5489 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5490 COMPILE-FILE command)
5491 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5492 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5493 no longer supported, since their implementation was deeply intertwingled
5494 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5495 * removed bogus "support" for compiler macros named (SETF FOO), and
5496 removed the compiler macro for SETF INFO (but only after making a fool
5497 of myself on the cmucl-imp mailing list by posting a bogus patch for
5498 DEFINE-COMPILER-MACRO..)
5499 * Compiled files containing forms which have side effects on the Lisp
5500 reader (such as DEFPACKAGE forms) are now handled more correctly.
5501 (Compiler queuing of top level lambdas has been suppressed by setting
5502 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5503 * deleted various currently-unused source files, e.g. gengc.lisp. They
5504 may be added back at some point e.g. when porting to other architectures,
5505 but until they are it's distracting to distribute them and to try to
5507 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5508 there were so many of them they're just distractions, and UNCROSS is
5509 known to be able to handle the current sources
5510 * moved PROFILE functionality into TRACE, so that it will be clear
5511 how the wrapping and unwrapping of functions when you profile them
5512 interacts with the wrapping and unwrapping of functions when you
5513 trace them. (Actually, the functionality isn't there yet, but at least
5514 the interface specification is there. Hopefully, the functionality will
5515 arrive with some future maintenance release.)
5516 * removed host-oops.lisp
5517 * changed signature of QUIT function to allow UNIX-CODE argument
5518 * fixed READ-SEQUENCE bug
5519 * tweaked verbose GC output so that it looks more like the progress
5520 output that ANSI specifies for functions like LOAD
5521 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5522 * added <http://sbcl.sourceforge.com> to the banner information printed by