1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.32:
3 * improvement: support O_LARGEFILE access to files larger than 2GB on
4 x86-64/linux. (thanks to Daniel Janus; launchpad bug #453080)
5 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
6 definitions for methods specializing on the passed class itself.
7 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
8 definitions for methods specializing on the passed class itself, or on
10 * fixes and improvements related to external formats:
11 ** fix a typo preventing conversion of strings into octet vectors
12 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
14 * bug fix: uses of slot accessors on specialized method parameters within
15 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
16 error while finalizing the class. This fix may cause classes with slot
17 accessors to be finalized later than previously. (reported by Lars Rune
18 Nøstdal; launchpad bug #473699)
19 * bug fix: restore buildability on the MIPS platform. (regression from
20 1.0.30.38, reported by Samium Gromoff)
21 * bug fix: inspecting closures is less likely to fail with a type error.
22 * bug fix: no timer starvation when setting the system clock back.
23 (launchpad bug #460283)
24 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
25 standard pprint dispatch table as specified by CLHS.
27 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
28 * optimization: faster FIND and POSITION on strings of unknown element type
29 in high SPEED policies. (thanks to Karol Swietlicki)
30 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
32 * improvement: better error signalling for bogus parameter specializer names
33 in DEFMETHOD forms (reported by Pluijzer)
34 * bug fix: DELETE-FILE once again works on logical pathnames (regression
36 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
38 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
39 removes previous default initargs (reported by Lars Rune Nøstdal and
41 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
42 lambda-lists. (reported by Peter Seibel)
43 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
44 correctly when starting from an executable core without saved runtime
45 options (reported by Faré Rideau, thanks to Zach Beane)
46 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
47 an optimization note instead. (reported by Martin Cracauer)
48 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
49 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
50 new process group if it doesn't need to share stdin with the sbcl
51 process. (thanks to Leslie Polzer)
52 * bug fix: SATISFIES could be misoptimized to refer to a local function.
53 (reported by Stanislaw Halik)
55 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
56 * improvement: stack allocation is should now be possible in all nested
57 inlining cases: failure to stack allocate when equivalent code is manually
58 open coded is now considered a bug.
59 * improvements related to Unicode:
60 ** the Unicode character database has been upgraded to the
61 Unicode 5.1 standard, giving names and properties to a number of new
62 characters, and providing a few extra characters with case
64 ** the system now recognizes and produces names for Unicode Hangul
66 ** the EBCDIC-US external-format is now supported for octet operations
67 (as well as for stream operations).
68 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
69 be used to output toplevel compile-time effects into a separate .CFASL
71 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
72 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
74 * optimization: TRUNCATE on known single- and double-floats is upto 25%
76 * optimization: division of floating point numbers by constants uses
77 multiplication by reciprocal when an exact reciprocal exists.
78 * optimization: multiplication of single- and double-floats floats by
79 constant two has been optimized.
80 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
81 sufficient type information is available. (thanks to Leslie Polzer)
82 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
83 known structure objects are as efficient as defstruct generated accessors.
84 * optimization: unused vector creation can now be optimized away.
85 * improvement: ASDF systems can now depends on SB-INTROSPECT.
86 * improvement: a STYLE-WARNING is signalled when a generic function
87 clobbers an earlier FTYPE proclamation.
88 * improvement: the compiler is able to track the effective type of
89 generic function across method addition and removal even in the
90 absence of an explicit DEFGENERIC.
91 * improvement: DESCRIBE now reports on symbols naming undefined
92 but assumed or declared function as well.
93 * improvement: recompilation of systems using SB-GROVEL now works
94 (thanks to Leslie Polzer)
95 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
96 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
98 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
99 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
100 well as user defined declaration names.
101 ** VARIABLE-INFORMATION is now aware of alien variables.
102 * improvement: improved address space layout on OpenBSD (thanks to Josh
104 * improvement: pretty-printing of various Lisp forms has been improved
105 (thanks to Tobias Rittweiler)
106 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
107 unused were deleted in safe code. (reported by John Fremlin)
108 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
110 * bug fix: some out-of-line array predicates were missing (reported by
112 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
114 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
115 (thanks to Larry D'Anna)
116 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
117 as well. (reported by Josh Elsasser)
118 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
119 leading to possible attempts to delete the same file twice. See docstring
120 on DELETE-FILE for details. (reported by John Fremlin)
121 * bug fix: DELETE-FILE once again deletes the file named by the pathname
122 designator argument, rather than its truename. (reported by Luis
124 * bug fix: the low-level debugger had 32-bit assumptions and was missing
125 information about some array types. (thanks to Luis Oliveira)
126 * bug fix: moderately complex combinations of inline expansions could
127 be miscompiled if the result was declared to be dynamic extent.
128 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
129 form (+ <variable> <integer>) were miscompiled under certain
131 * bug fix: in some cases no compiler note about failure to stack allocate
132 was emitted, even if the objects were in fact heap allocated.
133 * bug fix: minor violation of "otherwise inaccessible" rule for stack
134 allocation could cause objects users might reasonably expect to
135 be heap allocated to be stack allocated.
136 * bug fix: DESCRIBE signalled an error for generic functions under
137 certain circumstances. (thanks to Leslie Polzer)
138 * bug fix: Fixed spelling of an error message.
140 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
141 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
142 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
143 of SB-THREAD:THREAD-ERROR-THREAD.
144 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
145 * new feature: docstrings for local and anonymous functions are no longer
146 discarded. (thanks to Leslie Polzer)
147 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
148 values in other threads.
149 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
150 about object allocation.
151 * optimization: division of a real float by a complex float is implemented
152 with a specialised code sequence.
153 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
154 keywords is an order of magnitude faster.
155 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
156 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
157 methods, and similarly for non-standard metaclass classes as long as there
158 are no methods additional on MAKE-INSTANCE.
159 * optimization: more efficient type-checks for FIXNUMs when the value
160 is known to be a signed word on x86 and x86-64.
161 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
162 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
164 * optimization: compiler is smarter about delegating argument type checks to
166 * optimization: several character functions are now compiled somewhat more
167 efficiently. (reported by Lynn Quam)
168 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
169 * improvement: less unsafe constant folding in floating point arithmetic,
170 especially for mixed complex/real -float operations.
171 * optimization: constant double and single floats are stored in native
172 unboxed format on x86[-64].
173 * optimization: smarter code for arithmetic operations with constant floats,
174 complex floats, or integers on x86[-64].
175 * optimization: smarter code for conjugate/multiplication of float complexes
176 and abs/negate of floats on x86-64.
177 * optimization: more efficient complex float and real float operations on
179 * improvement: complex float division is slightly more stable.
180 * improvement: DESCRIBE output has been reworked to be easier to read and
181 contains more pertinent information.
182 * improvement: failure to provide requested stack allocation compiler notes
183 provided in all cases (requested stack allocation not happening without a
184 note being issued is now considered a bug.)
185 * bug fix: SB-POSIX exports the documented types and functions
186 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
187 types. (reported by "abhi")
188 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
189 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
190 (thanks to Paul Khuong)
191 * bug fix: looping around HANDLER-CASE could silently consume stack space
192 on each iteration. (reported by "foobar")
193 * bug fix: better error signalling when calls to functions seeking elements
194 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
195 (reported by Tobias Rittweiler)
196 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
197 directory components now works as it used to. (various prolems reported by
198 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
199 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
200 (reported by Elliot Slaughter, thanks to Stas Boukarev)
201 * bug fix: bogus undefined variable warnings from fopcompiled references to
202 global variables. (thanks to Lars Rune Nøstdal)
203 * bug fix: foreign function names should now appear in backtraces on
204 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
205 * bug fix: SETF compiler macro documentation strings are not discarded
207 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
208 (thanks to Alex Plotnick)
209 * bug fix: SLEEP accepts large integer arguments, truncating them to
210 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
211 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
212 * bug fix: compiler notes for expensive slot type checks could be emitted
213 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
215 changes in sbcl-1.0.29 relative to 1.0.28:
216 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
217 https://bugs.launchpad.net/sbcl
218 Bugs can be reported directly there, or by sending email to
219 sbcl-bugs@lists.sourceforge.net
220 (no subscription required.)
221 * minor incompatible change: under weak type checking policy integer
222 types are weakened less aggressively.
223 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
224 allowed to return, which causes SBCL to quit with exit status 0. Previously
225 if the function returned with a small integer return value, that value
226 was accidentally reused as the exit status.
227 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
228 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
229 :HASH-FUNCTION argument. Refer to user manual for details.
230 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
232 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
233 microseconds since the Unix epoch on all platforms.
234 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
235 allows the compiler to safely elide boundedness checks for special
237 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
238 the symbol, prohibits both lexical and dynamic binding. This is mainly an
239 efficiency measure for threaded platforms, but also valueable in
241 * new feature: UNC pathnames are now understood by the system on Windows.
242 * optimization: the compiler uses a specialized version of FILL when the
243 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
245 * optimization: accesses to potentially non-simple arrays where element type
246 is known are 50% faster.
247 * optimization: compiler now generates faster array typechecking code.
248 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
250 * optimization: multidimensional array accesses in the absence of type
251 information regarding array rank are approximately 10% faster due to
252 open coding of ARRAY-RANK.
253 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
254 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
256 * optimization: result of call to VECTOR can now be stack allocated.
257 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
258 as long as the resulting array is one-dimensional and has a known
259 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
260 length of the list matches the known length of the vector does not
261 allocate the list as an intermediate step. Ditto for VECTOR and simple
263 * optimization: MAKE-ARRAY can now stack allocate in the presence of
264 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
265 known element type, and is known to be simple and one dimensional.
266 * improvement: SBCL now emits a compiler note where stack allocation was
267 requested but could not be provided (not in all cases, unfortunately)
268 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
269 * improvement: pretty-printing loop has been implemented properly. (thanks
270 to Tobias Rittweiler)
271 * documentation: CLOS slot typechecing policy has been documented.
272 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
273 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
274 pointer, leading to memory faults. (thanks to Bart Botta)
275 * bug fix: better floating point exception handling on x86/OpenBSD.
276 (thanks to Josh Elsasser)
277 * bug fix: exit status from QUIT when called under --script was lost
278 (reported by Hubert Kauker)
279 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
280 same implementation of FILL to initialize the array, even if a more
281 efficient one was available (reported by Stas Boukarev, thanks to
283 * bug fix: potential miscompilation of array stack allocation on x86 and
284 x86-64. (reported by Time Tossavainen)
285 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
286 result in their subforms being treated as top level forms. (reported by
288 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
289 than a machine register could leave garbage in the high bits of the
290 result register (bug 316325).
291 * bug fix: disable address space randomization Linux/x86-64 as well,
292 not just x86-64. (reported by Ken Olum)
293 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
294 generate incorrect code.
295 * bug fix: #201; type inference for CONS and ARRAY types could derive
296 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
297 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
298 could not be assigned to or bound with PROGV. (reported by Lorenz
300 * bug fix: the value of CL:- in the inspector was the previous expression
301 evaluated rather than the expression being evaluated.
302 * bug fix: constants can no longer be locally declared special.
303 * bug fix: signals delivered to threads started from foreign land (read:
304 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
305 thread by blocking all signals and resignalling.
306 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
307 from :INITFORM, if any.
309 changes in sbcl-1.0.28 relative to 1.0.27:
310 * a number of bugs in cross-compilation have been fixed, with the ultimate
311 result that building under (at least) clisp should be much more reliable.
312 * minor incompatible changes: echo-streams now propagate unread-char to the
313 underlying input stream, and no longer permit unreading more than one
315 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
316 frames, allowing for instance more reliable backtraces.
317 * improvement: the debugger REPL can now reference lexical variables
318 by name directly for code compiled with (DEBUG 3).
319 * improvement: errors from malformed declarations now have better source
320 paths associated with them. (thanks to Tobias Rittweiler)
321 * optimization: faster local calls on x86/x86-64
322 * bug fix: some error messages for out-of-bound array indexes confused the
323 index and the bound. (thanks to Stas Boukarev)
324 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
326 * bug fix: running regressions tests in shells without OSTYPE set now works.
327 (reported by Harald Hanche-Olsen)
328 * bug fix: more robust static space exhaustion signalling from
329 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
330 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
331 docstring away instead of storing it under names such as (LAMBDA (X)).
332 (reported by Leslie Polzer)
333 * bug fix: timers could go off in the wrong order, be delayed indefinitely
334 (thanks to Ole Arndt for the patch)
335 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
336 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
337 potentially-invalid effective methods in its cache.
338 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
339 instances as well (thanks to Paul Khuong)
340 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
341 SB-POSIX:WAITPID and their C equivalents.
342 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
344 changes in sbcl-1.0.27 relative to 1.0.26:
345 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
346 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
347 * improvement: the system either recovers from stack exhaustion or dies
348 properly as opposed to leaving the user uncertain of whether the handler
349 trampled on some random memory next to the stack or having to rely on
350 --lose-on-corruption (which is still a good idea to use in production
351 because stack exhaustion can happen in signal handlers which will likely
353 * bug fix: fix gc related interrupt handling bug on ppc (regression from
354 1.0.25.37, reported by Harald Hanche-Olsen)
355 * bug fix: work around signal delivery bug in darwin (regression from
356 1.0.25.44, reported by Sidney Markowitz)
357 * bug fix: fix ERROR leaking memory (reported by David Thompson)
359 changes in sbcl-1.0.26 relative to 1.0.25:
360 * incompatible change: an interruption (be it a function passed to
361 INTERRUPT-THREAD or a timer function) runs in an environment where
362 interrupts can be enabled. The interruption can use
363 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
364 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
365 potentially running out of stack. Keep in mind that in the absence
366 of WITHOUT-INTERRUPTS some potentially blocking operation such as
367 acquiring a lock can enable interrupts.
368 * incompatible change: GC-OFF and GC-ON are removed, as they were
369 always unsafe. Use WITHOUT-GCING instead.
370 * new feature: runtime option --disable-ldb
371 * new feature: runtime option --lose-on-corruption to die at the
372 slightest hint of possibly non-recoverable errors: running out of
373 memory, stack, alien stack, binding stack, encountering a memory
374 fault, etc. In the absence of --lose-on-corruption a warning is
376 * enhancement: detect binding stack exhaustion
377 * enhancement: detect alien stack exhaustion on x86/x86-64
378 * improvement: generally more stable and reliable interrupt handling
379 * improvement: there is a per thread interruption queue,
380 interruptions are executed in order of arrival
381 * improvement: a repeating timer reschedules itself when the it has
382 finished, but expiration times are spaced equally. If an
383 expiration time is in the past it will trigger after a short grace
384 period that may give a chance to other things to run.
385 * optimization: slightly faster gc on multithreaded builds
386 * optimization: faster WITHOUT-GCING
387 * bug fix: when JOIN-THREAD signals an error, do it when not holding
388 important locks so that the debugger/handler doesn't produce
389 recursive errors or deadlock.
390 * bug fix: real-time signals are not used anymore, so no more
391 hanging when the system wide real-time signal queue gets full.
392 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
394 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
395 * bug fix: fix random memory faults related to interrupts on alpha
396 * bug fix: fix random memory faults related to interrupts on sparc
397 * bug fix: fix deadlocks related to starting threads
398 * bug fix: fix deadlines on locks on futex platforms
399 * bug fix: restore errno in signal handlers
400 * bug fix: fix deadlocks related to hash tables
401 * bug fix: fix deadlocks in pcl
403 changes in sbcl-1.0.25 relative to 1.0.24:
404 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
405 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
406 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
407 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
408 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
409 better name and does not return values so stale on multiprocessor systems.
410 Also, HOLDING-MUTEX-P was added for about the only sane usage of
412 * improvement: unithread builds keep track of MUTEX-VALUE.
413 * improvement: reading from a TWO-WAY-STREAM does not touch the output
414 stream anymore making it thread safe to have a concurrent reader and
415 a writer, for instance, in a pipe.
416 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
417 arguments, making compiler-macros for SETF-functions able to inspect
418 their constant arguments.
419 * improvement: COMPILE-FILE reports times with millisecond accuracy
420 (thanks to Luis Oliveira)
421 * optimization: CHAR-CODE type derivation has been improved, making
422 TYPEP elimination on subtypes of CHARACTER work better. (reported
423 by Tobias Rittweiler, patch by Paul Khuong)
424 * bug fix: setting alien structure fields of type struct by value now
425 computes the right offset for the memory copy.
426 * bug fix: compilation problem involving inlined calls to aliens with
427 result type VOID. (reported by Ken Olum)
428 * bug fix: #235a; sequential inline expasion in different policies no
429 longer reuses the functional from the previous expansion site.
430 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
431 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
432 * bug fix: named ENUMs in multiply-referenced alien record types no longer
433 cause an implied type redefinition. Regression from 1.0.21.29.
434 * bug fix: sign-extension of small signed return values now works with C
435 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
436 * improvements to the Windows port:
437 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
438 Westfold, thanks to Rudi Schlatte)
440 changes in sbcl-1.0.24 relative to 1.0.23:
441 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
442 vector of a multidimensional SIMPLE-ARRAY.
443 * new feature: the system now signals a continuable error if standard
444 readtable modification is attempted. (thanks to Tobias Rittweiler)
445 * new feature: DIRECTORY has been extended with a non-standard keyword
446 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
447 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
448 has been robustified and documented better. (thanks to Robert Goldman)
449 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
450 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
451 * tradeoff: constant FORMAT control strings are now compiled unless
452 SPACE > SPEED (previously only when SPEED > SPACE.)
453 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
455 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
457 * bug fix: lexical type declarations are now correctly reported by
458 SB-CLTL2. (reported by Larry D'Anna)
459 * bug fix: STRING-TO-OCTETS did not handle :START properly when
460 using UTF-8 as external format. (thanks to Luis Oliveira)
461 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
462 are signalled correctly. (thanks to Stas Boukarev)
463 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
464 designator. (thanks to Tobias Rittweiler)
465 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
466 designator, and returns T instead of the function. (thanks to
468 * bug fix: direct superclasses of STANDARD-CLASS and
469 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
470 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
471 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
472 when no class with the named slot yet exists no longer causes a
473 compile-time style-warning.
474 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
475 in safe code. (reported by Didier Verna)
476 * bug fix: #430; nested structure constructors can stack allocate.
477 * bug fix: on some 64-bit platforms dynamic space size was truncated
478 to #xffff0000 bytes. (reported by Benjamin Lambert)
479 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
480 REPL unusable. (reported by Daniel Herring)
481 * bug fix: return values of READ-SEQUENCE did not take :START into
482 account on file streams, regressions since 1.0.12.22. (reported by
483 Thomas Russ, patch by Paul Khuong)
484 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
485 method specializer used to confuse permuation vector optimization.
486 * bug fix: system inserted bogus implicit type declarations for local
487 special variables in DEFMETHOD bodies.
488 * bug fix: #354; duplicated frames in backtraces due to
489 non-tail-call-optimized XEPs to functions with return type NIL
491 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
492 initializes structure object slots according to DEFSTRUCT initforms,
493 and DEFSTRUCT forms :INCLUDEind structure classes defined using
494 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
495 (reported by Bruno Haible and Stephen Wilson)
496 * bug fix: #395; fill-pointer output streams used now support
497 element-type BASE-CHAR as well.
498 * bug fix: compiler error when attempting to derive return value of
499 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
501 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
503 * bug fix: Mac OS X binaries should now be portable between Leopard
506 changes in sbcl-1.0.23 relative to 1.0.22:
507 * enhancement: when disassembling method functions, disassembly
508 for the associated fast function is also produced.
509 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
511 * optimization: printing with *PRINT-PRETTY* true is now more
512 efficient as long as the object being printed doesn't require
513 special handling by the pretty printer.
514 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
515 now interact correctly with type declarations.
516 * partial bug fix: PCL detects infinite recursion during wrapper
517 validation. (thanks to Attila Lendvai)
518 * bug fix: #426; nested function calls are inlined properly.
519 Previously if FOO was an inline function, in calls of the form
520 (FOO (FOO ...)) the outer call was not inlined.
521 * bug fix: long long arguments passed in registers to alien
522 functions on PowerPC Linux and NetBSD are now handled correctly
523 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
525 changes in sbcl-1.0.22 relative to 1.0.21:
526 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
527 for the shared object in the current directory, but passes the native
528 namestring of the designated pathname to the operation system's shared
529 object loading function as-it.
530 * minor incompatible change: --disable-debugger toplevel option now takes
531 effect before processing of initialization files and --eval or --load
533 * new feature: new commandline argument: --script, which supports
534 shebang lines. See documentation for details. (based on work by
536 * new feature: SAVE-LISP-AND-DIE can save current values of
537 --dynamic-space-size and --control-stack-size in the executable core,
538 causing it to skip normal runtime option processing. See documentation
539 for details. (thanks to Zach Beane)
540 * enhancement: inoccous calls to EVAL or generic functions dispatching
541 on subclasses of eg. STREAM no longer cause compiler notes to appear.
542 * enhancement: the system no longer resignals errors from --load and
543 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
544 associated with the original error to be lost. (thanks to Ariel
546 * enhancement: :DONT-SAVE keyword argument has been added to
547 LOAD-SHARED-OBJECT for controlling interaction with
548 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
549 the effects of an earlier LOAD-SHARED-OBJECT call.
550 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
551 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
552 provided. (reported by Cedric St-Jean)
553 * bug fix: circularity handling in the reader did not treat raw
554 structure slots correctly. (reported by Cedric St-Jean)
555 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
556 file descriptors when there were none.
557 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
558 was broken. (reporteed by Willem Broekema)
559 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
560 pathnames without a directory.
561 * bug fix: COMPILE-FILE did not warn about undefined variable
562 references at toplevel, and LOAD of the resulting fasl did
564 * bug fix: functions with non-required arguments used to end up with
565 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
566 * bug fix: redefining a function with non-required arguments didn't
567 update the system's knowledge about its call signature properly.
568 * bug fix: fixed #431; incompatible alien record type redefinitions
569 are detected and handled. (reported by Neil Haven)
570 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
571 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
573 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
574 after alien stack frames.
575 * bug fix: strings passed to mk{s,d}temp lacked null termination
577 changes in sbcl-1.0.21 relative to 1.0.20:
578 * new feature: the compiler is able to track the effective type of a
579 generic function across method addition and removal.
580 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
581 appropriately typed structure slots without locking.
582 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
583 information like those gathered by TIME using a programming-friendly
585 * new feature: TIME reports time taken even if the form performs a
586 non-local transfer of control.
587 * enhancement: reduced conservativism on GENCGC platforms: on
588 average 45% less pages pinned (measured from SBCL self build).
589 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
590 mutate constant symbols or violate declaimed type of the symbol.
591 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
592 sleeping on the semaphore in heavily contested semaphores.
593 * bug fix: semaphores and condition variables were not interrupt
595 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
596 owned by other threads anymore.
597 * bug fix: FIND on lists called KEY outside the specified
598 subsequence. (reported by budden)
599 * bug fix: LOG doesn't use single-float intermediate results when
600 given mixed integer and double-float arguments, leading to better
601 precision. (reported by Bob Felts)
602 * bug fix: LOG with base zero returned values of inconsistent type.
604 changes in sbcl-1.0.20 relative to 1.0.19:
605 * minor incompatible change: OPTIMIZE qualities
606 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
607 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
608 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
609 * documentation: some slot access efficiency guidelines have been
610 added to the user manual.
611 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
612 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
613 as ASSOC and MEMEBER.
614 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
615 to more efficient EQ-comparison versions more often.
616 * optimization: enhanced derivation of DOLIST iteration variable type
618 * optimization: constant folding of simple (LIST ...) forms as DOLIST
620 * optimization: runtime lookup of function definitions can be
621 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
622 * optimization: compiler is able to derive the return type of
623 (AREF (THE STRING X) Y) as being CHARACTER.
624 * optimization: CLRHASH on empty hash-tables no longer does pointless
625 work. (thanks to Alec Berryman)
626 * optimization: REPLACE deftransforms don't punt when :START1 or
628 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
629 no longer emits a code deletion note. (reported by Andrew
631 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
632 functions with an odd number of &OPTIONAL arguments, a &REST
633 argument, and one or more &KEY arguments at the call site.
634 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
635 arguments appeared at call sites as well.
636 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
637 READ-LINE &co can no longer read from them afterwards. (reported
639 * bug fix: fixed #427: unused local aliens no longer cause compiler
640 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
642 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
643 alien-stack leakage. (reported by Andy Hefner)
644 * bug fix: PROGV signals an error when an attempt to violate declared
645 type of a variable or bind a constant is made.
646 * bug fix: SET signals an error when an attempt to violate declared
647 type of a variable is made.
648 * bug fix: restart computation during the execution of a restart
649 test function no longer causes infinite recursion. (reported by
651 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
652 signals an error. (thanks to Pierre Mai)
653 * bug fix: EXPORT left symbol unexported in conflict situations.
654 (thanks to Michael Weber)
655 * bug fix: correctly handle name conflicts involving CL:NIL.
656 (thanks to Michael Weber)
657 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
658 conflicts arising from USEing package with conflicting symbols
659 correctly. (thanks to Michael Weber)
661 changes in sbcl-1.0.19 relative to 1.0.18:
662 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
663 warnings that go otherwise unhandled will be muffled if they are
664 of the type that's the value of this variable.
665 * optimization: stack allocation is slightly more efficient on x86
667 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
668 where a raw slot always is initialized using the initform whose
669 type is not know sufficiently well a compile-time are now compiled
670 correctly. (reported by John Morrison)
671 * bug fix: compiler no longer makes erronous assumptions in the
672 presence of non-foldable SATISFIES types.
673 * bug fix: stack analysis missed cleanups of dynamic-extent
674 arguments in non-let-converted calls to local functions.
675 * improvements to the Windows port:
676 ** adjusted address spaces for building on both Win32 and
677 Win64. (thanks for John Connors)
678 * fixed some bugs revealed by Paul Dietz' test suite:
679 ** interval arithmetic during type derivation used inexact integer
680 to single-float coercions.
681 ** arithmetic operations involving large integers and single
682 floats give the same results in compiled and interpreted code.
683 ** deriving the result type of COERCE no longer signals an error
684 if the derived type of the second argument is a MEMBER type
685 containing invalid type specifiers.
686 ** ADJOIN with constant NIL as second argument works correctly.
687 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
689 changes in sbcl-1.0.18 relative to 1.0.17:
690 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
691 profiles only the current thread.
692 * minor incompatible change: changes to SYMBOL-VALUE of constants
693 defined with DEFCONSTANT now signal an error.
694 * enhancement: SB-SPROF now has support for wallclock profiling,
695 and is also able to profile specific threads. REPORT output
696 has also additional sorting options.
697 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
699 * optimization: structure allocation has been improved
700 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
701 ** out of line constructors are ~10% faster.
702 ** inline constructors are ~15% faster.
703 ** inline constructors are capable of dynamic extent allocation
704 (generally on x86 and x86-64, in some cases on other platforms
706 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
708 * optimization: file compiler is now able to coalesce non-circular
709 lists, non-base strings, and bit-vectors. Additionally, constants
710 are never referenced through SYMBOL-VALUE at runtime.
711 * optimization: code defining methods on PRINT-OBJECT (and other
712 generic functions in the COMMON-LISP package) now loads faster.
713 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
715 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
716 fasl is now deleted. (reported by Attila Lendvai)
717 * bug fix: READ-LINE always returned NIL for the last line in files.
718 (reported by Yoshinori Tahara)
719 * bug fix: more accurate disassembly annotations of foreign function
720 calls. (thanks to Andy Hefner)
721 * bug fix: trimming non-simple strings and non-string string
722 designators when the there is nothing to trim works properly.
723 (thanks to James Knight)
724 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
725 (thanks to Travis Cross)
726 * fixed some bugs revealed by Paul Dietz' test suite:
727 ** NIL is a valid function name (regression at 1.0.13.38)
728 ** FILL on lists was missing its return value (regression at 1.0.12.27)
729 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
730 fill pointers properly (regression at 1.0.12.23)
731 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
732 displacement indices properly (regression at 1.0.12.23)
734 changes in sbcl-1.0.17 relative to 1.0.16:
735 * temporary regression: user code can no longer allocate closure
736 variable storage on stack, due to bug 419 without explicitly
737 requesting it. Please consult sbcl-devel for advice if you need to
738 use this feature in the meanwhile.
739 * new feature: runtime argument --control-stack-size can be used to
740 adjust thread default control stack size.
741 * enhancement: improved TIME output
742 ** all times are reported using the measured accuracy (milliseconds
743 for real and GC times, microseconds for everything else.)
744 ** processor cycle counts on x86 and x86-64.
745 ** interpreted forms are counted for both evaluator modes.
746 ** number of lambdas converted by the compiler is reported.
747 ** CPU percentage report (computed from real and total run time.)
748 ** more comprehensive run time reporting, using a condenced format
749 ** interperted form, lambda, and page fault counts are omitted
751 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
753 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
754 * optimization: two argument forms of LAST are upto ~10% faster
755 in normal SPEED policies.
756 * optimization: NCONC no longer needs to heap cons its &REST list
757 in normal SPEED policies.
758 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
760 * bug fix: UNION and NUNION work with :TEST-NOT once more,
761 regression since 1.0.9.1. (thanks to Eric Marsden)
762 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
763 since 1.0.15.36. (thanks to Paul Khuong)
764 * bug fix: LAST when always returned the whole list when given a bignum
765 as the second argument.
766 * bug fix: dynamic extent allocation of nested lists and vectors
767 could leak to otherwise accessible parts.
768 * bug fix: invalid optimization of heap-allocated alien variable
770 * bug fix: fasl header checking is less vulnerable to different
771 platform word lengths.
772 * bug fix: more correct assembler syntax for GNU binutils
773 2.18.50.0.4 support. (thanks to Marijn Schouten)
774 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
776 * bug fix: the fopcompiler can handle LOCALLY forms (with no
777 declarations) successfully. (reported by Attila Lendvai)
779 changes in sbcl-1.0.16 relative to 1.0.15:
780 * minor incompatible change: revert the changes to sb-posix's error
781 signaling added in 1.0.14.
782 * minor incompatible change: change PROBE-FILE back to returning
783 NIL whenever we can't get a truename, as was the case before 1.0.14.
784 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
785 inherits from ERROR instead of just CONDITION.
786 * new feature: SB-INTROSPECT can provide source locations for instances
787 as well. (thanks to Tobias Rittweiler)
788 * optimization: binding special variables now generates smaller code
789 on threaded platforms.
790 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
791 and cases where no :TEST is given but the compiler can infer that
792 the element to search is of type (OR FIXNUM (NOT NUMBER)).
793 * optimization: better LOGNOT on fixnums.
794 * optimization: modular arithmetic for a particular requested width
795 is implemented using a tagged representation unless a better
796 representation is available.
797 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
798 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
799 for wellformedness and returns a specialized vector. (reported by
800 Francois-Rene Rideau)
801 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
802 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
803 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
804 unscheduling timer at the same time as another timer fires.
805 * bug fix: don't reschedule timers for dead threads.
806 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
807 * bug fix: copying output from RUN-PROGRAM to a stream signalled
808 bogus errors if select() was interrupted.
809 * enhancement: add support for fcntl's struct flock to SB-POSIX.
811 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
812 * enhancement: cleaner backtraces for interactive interrupts, as
813 well as other cases where the interesting frames used to be
814 obscured by interrupt handling frames.
815 * enhancement: untracing a whole package using (UNTRACE "FOO") is
816 now supported, and tracing a whole package using (TRACE "FOO") now
817 traces SETF-functions as well.
818 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
819 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
820 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
821 * unreadably printed representation of hash-tables now includes
823 * bug fix: partially fixed #188: type propagation from assignments
824 is now more efficient.
825 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
826 'DOUBLE-FLOAT) are not flushable.
827 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
828 full address of the object, and none of the tag bits.
829 * bug fix: readably printing hash-tables now respects other printer
830 control variables. (reported by Cedric St-Jean)
831 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
832 keyword with MAKE-HASH-TABLE.
833 * bug fix: export SB-POSIX:MKSTEMP.
834 * bug fix: SORT was not interrupt safe.
835 * bug fix: XREF accounts for the last node of each basic-block as
837 * bug fix: MAKE-INSTANCE optimizations interacted badly with
838 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
839 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
840 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
841 create obsolete instances in the case of redefinition or
842 obsoletion of a superclass. (thanks to Andy Hefner)
843 * bug fix: Support for the Alpha architecture has been revived; it had
844 suffered somewhat from lack of maintenance since sbcl-1.0.
845 * improvements to the Windows port:
846 ** The system detects the codepage to use at startup, instead of
847 using the value from the saved core. (thanks to Kei Suzuki)
849 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
850 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
851 (see documentation for details.)
852 * revived support for OpenBSD (contributed by Josh Elsasser)
853 * partially fixed bug #108: ROOM no longer suffers from occasional
854 (AVER (SAP= CURRENT END)) failures.
855 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
856 bodies no longer cause a WARNING to be signalled. (reported by
858 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
859 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
860 the bug in TRUNCATE.) (reported by Michael Weber)
861 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
862 no samples. (reported by Andy Hefner)
863 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
864 no longer appear as (NIL ...) frames in backtraces.
865 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
866 is now actually exported from SB-EXT as documented. (reported by
868 * bug fix: sb-aclrepl now correctly understands how to inspect
869 single-floats on 64-bit platforms where single-floats are not boxed.
870 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
871 yet been finalized. (reported by Levente Meszaros)
872 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
873 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
874 SBCL-specific optimize qualities.
876 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
877 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
878 an executable in the search path, and does so in the child
879 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
880 been removed; it can be found in the CVS history, for somebody who
881 needs that search behavior (see the manual).
882 * minor incompatible change: compiler policy re. weakening type
883 checks has changed: now type checks are weakened only if SAFETY < 2
885 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
886 unparsing of directory pathnames as files. Analogously,
887 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
888 filename to parse into a directory pathname.
889 * enhancement: implicit generic function creation now signals a
890 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
891 users can bind handlers for and muffle around calls to LOAD.
892 * enhancement: RUN-PROGRAM allows unicode arguments and environments
893 to be used (using the default stream external format), and allows
894 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
895 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
896 strings and vectors whose element-type or simplicity is not fully
897 known at compile-time.
898 * optimization: STRING-TRIM and related functions no longer allocate
899 a new string when no trimming needs to be performed. These functions
900 are also faster than before when the input string has been declared
902 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
903 * optimization: READ-LINE is significantly faster for files containing
905 * optimization: non-open coded uses of character comparison operators
906 (e.g. char=) no longer cons when called with more than one parameter
907 on platforms supporting dynamic-extent allocation.
908 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
909 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
910 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
912 * bug fix: some sequence functions elided bounds checking when
914 * bug fix: too liberal weakening of union-type checks when SPEED >
916 * bug fix: more bogus fixnum declarations in ROOM implementation
919 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
920 * new feature: MAKE-HASH-TABLE now experimentally accepts a
921 :SYNCHRONIZED argument, which makes the hash-table safe for
922 concurrent accesses (but not iteration.) See also:
923 SB-EXT:WITH-LOCKED-HASH-TABLE, and
924 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
925 * optimization: CONCATENATE on strings is an order of magnitude faster
926 in code compiled with (> SPEED SPACE).
927 * optimization: SUBSEQ is ~50% faster on lists.
928 * bug fix: bug 417 fixed -- source location reporting is now more robust.
929 * bug fix: SUBSEQ on a list will now correctly signal an error if if
930 END is smaller then START.
931 * bug fix: SB-PROFILE will no longer report extra consing for nested
932 calls to profiled functions.
933 * bug fix: ROOM implementation had bogus fixnum declarations which
934 could cause type-errors when calling ROOM on large images.
935 * bug fix: if file compilation is aborted, the partial fasl is now
936 deleted, and COMPILE-FILE returns NIL as the primary value.
937 * bug fix: number of thread safety issues relating to SBCL's internal
938 hash-table usage have been fixed.
939 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
940 be returned from its body when the values were being returned
941 using unknown-values return convection and the W-P-O was wrapped
942 inside an UNWIND-PROTECT.
943 * bug fix: sb-posix should now compile again under Windows, enabling
946 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
947 * incompatible change: hash-table accessor functions are no longer
948 automatically protected by locks. Concurrent accesses on the same hash-table
949 from multiple threads can give inconsistent results or even corrupt the
950 hash-table completely. Multi-threaded applications should do their own
951 locking at the correct granularity. In the current implementation it is
952 still safe to have multiple readers access the same table, but it's not
953 guaranteed that this property will be maintained in future releases.
954 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
955 and will signal an error at runtime.
956 * enhancement: SB-THREAD package now exports a semaphore interface.
957 * enhancement: CONS can now stack-allocate on x86 and
958 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
960 * enhancement: nested lists can now be stack allocated on
961 platforms providing stack allocation support.
962 * enhancement: dynamic-extent support has been extended to support
963 cases where there are multiple possible sources for the stack
965 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
966 if the mutex is uncontested on Linux.
967 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
968 as specified by the CLHS. (thanks to Tobias Rittweiler)
969 * bug fix: NaN comparison now works on x86-64.
970 * bug fix: CLOSE :ABORT T on a stream with pending output now
972 * bug fix: instances of non-standard metaclasses using standard
973 instance structure protocol sometimes missed the slot type checks
975 * bug fix: known functions can be inlined in high-debug code.
977 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
978 * minor incompatible change: the MSI installer on Windows no longer
979 associates .lisp and .fasl files with the installed SBCL.
980 * minor incompatible change: :UNIX is no longer present in *FEATURES*
981 on Windows. (thanks to Luis Oliviera)
982 * new feature: SB-CLTL2 contrib module now implements
983 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
984 * optimization: scavenging weak pointers is now more efficient,
985 requiring O(1) instead of O(N) per weak pointer to identify
986 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
987 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
988 method bodies using constant slot-names when the first argument is
989 a specializer parameter for the method.
990 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
991 names, when the class of the instance is a direct instance
992 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
993 as slow as the constant slot-name case.)
994 * optimization: member type construction is now O(N) instead
996 * optimization: UNION and NUNION are now O(N+M) for large
997 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
999 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1000 now more readable in environments like Slime which display it.
1001 (thanks to Tobias C. Rittweiler)
1002 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1003 was able to infer the correct argument type for the object on which
1004 the CAS operation was being performed.
1005 * bug fix: copy propagation interfered with parallel assignment
1006 semantics in local calls. (reported by Paul Khuong)
1007 * bug fix: the signed modular fixnum shift compiled to wrong code on
1008 x86 and x86-64. (spotted by a slight modification to some of
1011 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1012 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1013 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1014 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1016 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1017 and generic function now print the object identity for anonymous
1018 instances. (thanks to Attila Lendvai)
1019 * enhancement: as an extension to MOP, SBCL now supports SETF of
1020 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1021 (thanks to Attila Lendvai)
1022 * enhancement: sb-cover has an alternate annotation mode which puts
1023 the form annotations at the car of the form, instead of annotating
1024 it completely. The benefit of this mode is that it shows better
1025 which forms were instrumented by the compiler.
1026 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1027 by printer control variables. (reported by Dan Corkill)
1028 * bug fix: system leaked memory when delayed output was performed by
1029 the OS in smaller chunks then expected. (thanks to David Smith)
1030 * bug fix: system leaked memory when file streams were not closed
1032 * bug fix: large objects written to slow streams that were modified
1033 after the write could end up with the modified state written to
1034 the underlying file descriptor.
1035 * bug fix: multiple threads operating in parallel on the same stream
1036 could cause buffer-overflows.
1037 * bug fix: source location information is stored correctly
1038 (broken since 1.0.6). This bug would generally show up as the
1039 Slime debugger highlighting the wrong form when the sldb-show-source
1041 * bug fix: Branch forms are again annotated as branches in the sb-cover
1043 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1044 on x86-64. (reported by Gregory Vanuxem)
1045 * bug fix: EQUALP could return wrong results for structures with raw
1046 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1047 word). (reported by Vjacheslav Fyodorov)
1048 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1051 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1052 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1053 atomic compare-and-swap operations on threaded platforms.
1054 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1055 allows assigning a global minimum value to optimization qualities
1056 (overriding proclamations and declarations).
1057 * enhancement: closed over variables can be stack-allocated on x86
1059 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1061 * optimization: slot definition lookup is now O(1). This speeds up
1062 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1063 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1064 * optimization: ASSOC and MEMBER can now be open-coded for all
1065 combinations of keyword arguments when second argument is constant
1066 and SPEED >= SPACE. In other cases a specialized version is
1068 * bug fix: using obsoleted structure instances with TYPEP and
1069 generic functions now signals a sensible error.
1070 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1071 (reported by Kristoffer Kvello)
1072 * bug fix: backtrace construction is now more careful when making
1073 lisp-objects from pointers on the stack, to avoid creating bogus
1074 objects that can be seen by the GC.
1075 * bug fix: defaulting of values in contexts expecting more than 7
1076 variables now works on x86-64. (reported by Christopher Laux)
1077 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1079 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1080 as the property-list of a symbol.
1081 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1082 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1083 situations requested, are once again file-compileable. (reported
1086 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1087 * MOP improvement: support for user-defined subclasses of
1088 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1089 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1090 the expansion of DEFMETHOD, is responsible for generating a form
1091 which creates a list of specializers when evaluated. Additional
1092 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1093 debugging and introspective support.
1094 * minor incompatible change: the (unsupported) spinlock interface
1095 has changed: free spinlock now has the value NIL, and a held spinlock
1096 has the owning thread as its value.
1097 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1098 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1100 * enhancement: name of a socket-stream is now "a socket" instead of
1101 "a constant string".
1102 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1103 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1104 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1105 for generic functions. (Thanks to Tobias C. Rittweiler)
1106 * optimization: bignum printing speed has been improved by 20-40%
1107 (depending on the bignum size.)
1108 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1110 * bug fix: the cache used by the CLOS to store precomputed effective
1111 methods, slot offsets, and constant return values is now thread and
1113 * bug fix: generic function dispatch function updating is now thread
1114 and interrupt safe (in the sense that the known issues have been
1116 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1117 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1118 * bug fix: asdf systems with dependencies to the SB-POSIX or
1119 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1120 * bug fix: interrupt safety of applicable method computation has been
1123 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1124 * new contrib: sb-cover, an experimental code coverage tool, is included
1125 as a contrib module.
1126 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1127 significantly faster.
1128 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1129 produce more efficient code on x86-64 if the compiler can determine
1130 that (+ INDEX <constant>) does not require a bounds check and FOO
1131 has an element type at least 8 bits wide.
1132 * enhancement: a new, experimental synchronous timeout facility is
1133 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1134 * enhancement: when a symbol name conflict error arises, the
1135 conflicting symbols are always printed with a package prefix.
1136 (thanks to Kevin Reid)
1137 * enhancement: stepping is now once again supported on the SPARC and
1138 MIPS platforms. (It is also now more likely to work on CheneyGC
1140 * enhancement: sb-sprof can now also track and report accurate call
1142 * bug fixes: the treatment of non-standard subclasses of
1143 SB-MOP:SPECIALIZER is more correct.
1144 * incompatible change: PURIFY no longer copies the data from the
1145 dynamic space into the static and read-only spaces on platforms
1146 that use the generational garbage collector
1147 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1149 * bug fix: GC race condition occasionally resulting in crashes with
1150 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1152 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1154 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1155 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1156 * bug fix: an asynchronous interrupt could previously leave the
1157 system running with GC inhibited.
1158 * bug fix: a DECLARE form evaluated at top-level now causes an error
1159 rather than silently (or verbosely) returning NIL.
1160 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1161 result in a error being signalled due to source form lookup errors.
1162 (reported by Peter Graves)
1164 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1165 * incompatible change: removed writer methods for host-ent-name,
1166 host-ent-addresses -- changing the values did not update the DNS
1168 * minor incompatible change: changed experimental JOIN-THREAD interface
1169 * documentation: the manual now lists reader and writer methods
1170 in class slot documentation sections. (thanks to Richard M Kreuter)
1171 * documentation: unwinding from asyncronous events has been
1172 documented as unsafe.
1173 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1174 in multithreaded application code.
1175 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1176 platforms. (thanks to James Anderson for the optimization hint)
1177 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1179 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1180 variants no longer cons.
1181 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1182 their NOT- variants no longer cons.
1183 * optimization: EQUAL hash tables no longer use SXHASH for objects
1184 of all data types, but instead use an EQL hash for types for which
1185 EQUAL is the same as EQL.
1186 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1187 are significantly faster.
1188 * optimization: new STRING-OUTPUT-STREAM implementation is much
1189 faster for large outputs and conses 30% less on average.
1190 * enhancement: XREF information is now collected for references made
1191 to global variables using SYMBOL-VALUE and a constant argument.
1192 * enhancement: SIGINT now causes a specific condition
1193 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1194 * bug fix: FILE-POSITION used to signal an error in some cases where
1195 ANSI requires it to return NIL.
1196 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1197 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1198 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1200 * bug fix: bad type declaration in the CLOS implementation has
1201 been fixed. (reported by James Anderson)
1202 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1203 (thanks to Lutz Euler)
1204 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1205 required by the CLHS. (reported by Samium Gromoff)
1206 * bug fix: dead unbound variable references now signal an error.
1207 (reported by Marco Monteiro)
1208 * bug fix: / with an unused value was being deleted in safe code.
1209 (thanks to Marco Monteiro and Kevin Reid)
1210 * bug fix: number of characters that can be written onto a single
1211 line in a file is unlimited.
1212 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1213 been fixed by inhibiting interrupts for when GC is disabled.
1214 * bug fix: some interrupt safety issues with GETHASH, (SETF
1215 GETHASH), CLRHASH and REMHASH have been fixed.
1216 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1217 specifier no longer causes infinite recursion.
1218 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1219 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1220 * bug fix: an &environment argument with the correct variable information
1221 is passed to macros that are expanded during byte compilation.
1222 (reported by Samium Gromoff)
1223 * bug fix: a logic error was causing the hash function for bignums to
1224 have excessive amounts of collisions. (reported by Faré Rideau)
1225 * bug fix: modifying the contents of an array could change the return
1226 value of SXHASH on that array, which is only allowed for strings
1227 and bit vectors. (bug introduced in 0.9.16)
1228 * improvement: the x86-64/darwin port now passes all tests (except
1229 for the debugger tests) but should still be considered
1230 experimental until this is fixed.
1231 * improvement: a style-warning is signaled for CASE (etc) clauses with
1232 duplicate keys. (thanks to Kevin Reid)
1233 * improvement: macos/x86 and macos/x86-64 now use mach exception
1234 handlers for dealing with illegal instructions (for trapping and
1235 error handling) and memory protection violations (for GC).
1237 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1238 * new platform: experimental support for x86-64/darwin (MacOS).
1239 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1240 and getnameinfo sockets functions are used instead of gethostbyaddr
1241 and gethostbyname, on platforms where the newer functions are available.
1242 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1244 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1245 don't print the startup banner, but behave as if --noinform was passed
1246 as a command line argument. (thanks to Kevin Reid)
1247 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1248 * optimization: code using alien values with undeclared types is much faster.
1249 * optimization: the compiler is now able to open code SEARCH in more cases.
1250 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1251 * bug fix: using standardized COMMON-LISP special variables as loop
1252 variables no longer signals bogus package lock violations. (reported
1254 * bug fix: declaring local loop variables to be of a range-limited type
1255 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1256 (reported by Andras Simon)
1257 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1258 bugs remain on x86-64.)
1259 * bug fix: the #= and ## reader macros now interact reasonably with
1260 funcallable instances.
1261 * bug fix: type-checks for function arguments were compiled using the
1262 compiler policy settings of the wrong lexical environment (in 1.0.2
1264 * bug fix: SHADOW accepts characters as string designators, as required
1265 by the spec (thanks to Eric Marsden)
1266 * bug fix: fixed GC safety issues when foreign functions are called with
1267 non-base strings as arguments
1268 * bug fix: more consistent error output for fatal-compiler-warnings, like
1270 * bug fix: functions with proper names were showing up as NIL in
1271 backtraces (reported by Edi Weitz, regression in 1.0.2)
1273 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1274 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1275 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1276 produce more efficient code on the x86 if the compiler can determine
1277 that (+ INDEX <constant>) does not require a bounds check and FOO
1278 has an element type at least 8 bits wide.
1279 * bug fix: references to undefined variables are handled the same way
1280 in toplevel forms as in the normal compiler
1281 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1283 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1284 (thanks to Jon Buller)
1285 * improvement: faster compilation times for complex functions
1286 * improvement: added readlink support to SB-POSIX (thanks to Richard
1289 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1290 * improvement: experimental support for mach exception handling on
1291 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1293 * improvement: support for GBK external format.
1294 (thanks to Chun Tian (binghe))
1295 * improvement: the debugger now displays variables that have been closed
1296 over, in code compiled with (DEBUG 2) or higher
1297 * improvement: support for executable cores on NetBSD (thanks to
1299 * new feature: added a RESTART-FRAME debugger command
1300 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1301 be used to provide an implementation for FILE-POSITION on Gray streams
1302 (thanks to Eric Marsden)
1303 * new feature: add syslog, openlog and closelog support to SB-POSIX
1304 (thanks to Richard Kreuter)
1305 * optimization: the function call overhead in code compiled with
1306 a high DEBUG optimization setting is significantly
1307 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1308 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1309 (thanks to Tony Martinez)
1310 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1311 evaluated once (reported by Kevin Reid)
1312 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1313 works again (thanks to Kilian Sprotte)
1314 * bug fix: an error is signaled for tagbodies with duplicate tags
1315 (thanks to Stephen Wilson)
1316 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1317 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1318 stack frames from alien callbacks.
1319 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1320 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1321 65k pages (thanks to David Woodhouse)
1322 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1324 changes in sbcl-1.0.1 relative to sbcl-1.0:
1325 * new platform: FreeBSD/x86-64, including support for threading.
1326 * new feature: the compiler stores cross-referencing information
1327 about function calls (who-calls), macroexpansion (who-macroexpands)
1328 and special variables (who-binds, who-sets, who-references) for code
1329 compiled with (< SPACE 3). This information is available through the
1330 sb-introspect contrib.
1331 * new feature: users may subclass SEQUENCE, and have instances of
1332 these classes interoperate with standard Common Lisp functions if
1333 a number of methods are defined. (This feature is experimental
1334 and the interface subject to change based on feedback from SBCL
1335 users and the general community)
1336 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1337 x86/x86-64, rather than the previous fixed depth of 8
1338 * improvement: another pthread back-end of mutex "pthread-futex".
1339 * bug fix: non-ascii command-line arguments are processed correctly
1340 (thanks to Yaroslav Kavenchuk)
1341 * bug fix: non-required arguments were not passed correctly when a method
1342 defined using DEFMETHOD was called from a mop-generated method using
1343 CALL-NEXT-METHOD (reported by Pascal Costanza)
1344 * bug fix: recursion is now permitted in accessors through
1345 SLOT-UNBOUND. (reported by Pascal Costanza)
1346 * bug fix: an error was signaled at startup if the HOME environment
1347 variable was defined, but had an empty value (reported by Peter Van Eynde)
1348 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1349 signal a PROGRAM-ERROR, not a BUG.
1350 * bug fix: SB-POSIX:READDIR works when built with large file support.
1351 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1353 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1354 for better automatic indentation support. (thanks to Matt Pillsbury)
1355 * optimization: loading generic functions no longer takes O(n^2) time,
1356 proportional to the amount of methods in the generic function
1357 (reported by Todd Sabin and Jeremy Brown)
1358 * optimization: the FIND and POSITION family of sequence functions
1359 are significantly faster on arrays whose element types have been
1361 * improvements to the Windows port:
1362 ** Intermittent heap corruption problems have been fixed. (thanks
1363 to Alastair Bridgewater)
1364 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1366 ** Lisp is able to unwind foreign exception frames from alien
1367 callbacks. (thanks to Alastair Bridgewater)
1369 changes in sbcl-1.0 relative to sbcl-0.9.18:
1370 * improvement: experimental support for threading on FreeBSD/x86.
1371 (thanks to NIIMI Satoshi)
1372 * improvement: runtime option --dynamic-space-size can be used
1373 to set the size of the dynamic space reserved on startup.
1374 * improvement: floating point modes in effect are now saved in
1375 core, and restored on startup.
1376 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1377 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1378 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1379 threads are not running after *SAVE-HOOKS* have run.
1380 * improvement: writes to CLOS instance slots are type-checked in code
1381 compiled with (SAFETY 3)
1382 * improvement: floating-point exception handling on FreeBSD (thanks to
1384 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1385 (thanks to Zach Beane)
1386 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1388 * improvement: added support for the Shift-JIS external format.
1389 (contributed by NIIMI Satoshi)
1390 * improvement: callbacks are supported on Linux/PPC. (thanks to
1392 * bug fix: compiler bug triggered by a (non-standard) VALUES
1393 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1394 * bug fix: file compiler no longer confuses validated and already
1395 dumped structurres. (reported by Kaersten Poeck)
1396 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1397 fill-pointer signals a type-error as required. (thanks to
1399 * bug fix: disassemly of funcallable instances works.
1400 * bug fix: single stepping on PPC.
1401 * bug fix: fix thread-safety problems in the type system (generally
1402 manifesting as nonsensical errors like "STRING is a bad type specifier
1403 for sequences" or "The value 1 is not of type FIXNUM")
1404 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1405 (reported by Josip Gracin)
1406 * bug fix: an error is signaled for attempts to displace arrays with
1407 incompatible element types (thanks to Mario Mommer)
1408 * bug fix: more correct handling of wide characters in debug info
1409 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1410 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1411 and don't cause extra consing
1412 * optimization: MAP and MAP-INTO are significantly faster on vectors
1413 whose elements types have been declared.
1414 * Improvements to SB-SPROF:
1415 ** Support for allocation profiling
1416 ** Reduced profiling overhead, especially for long profiling runs
1417 * Improvements to the Windows port:
1418 ** floating point exceptions are now reported correctly.
1419 ** stack exhaustion detection works partially.
1420 ** more accurate GET-INTERNAL-REAL-TIME.
1421 ** better RUN-PROGRAM behaviour in case of errors in the child
1423 ** PROBE-FILE now simplifies pathnames correctly.
1424 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1425 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1426 1st 1970 (although time timezone data will be unreliable).
1427 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1429 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1430 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1431 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1433 * bug fix: two potential GC deadlocks affecting threaded builds.
1434 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1435 returns T (reported by Anton Kazennikov)
1436 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1437 with non-variable places
1438 * bug fix: remove a race condition in the setting of
1439 funcallable-instance functions, this should make threaded CLOS
1440 code more stable against memory faults.
1441 * bug fix: corruption of specials when unbinding is interrupted by an
1442 asynchronous unwind (reported by Hannu Koivisto)
1443 * improvement: the debugger will now also display local variables that
1444 are only used once, for code compiled with a DEBUG optimization quality
1447 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1448 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1449 * incompatible change: External-format support for FFI calls. The
1450 SB-ALIEN:C-STRING no longer implies an ASCII
1451 external-format. Instead the string is subject to external-format
1452 conversion. Additionally return values of type SB-ALIEN:C-STRING
1453 are by default of type (SIMPLE-ARRAY CHARACTER), not
1454 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1455 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1456 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1457 * incompatible change: SB-EXT package no longer contains the
1458 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1459 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1461 * incompatible change: the single-stepper is no longer available
1462 on Alpha, Mips and Sparc platforms.
1463 * minor incompatible change: the direct superclasses of
1464 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1465 not (STANDARD-OBJECT FUNCTION). This makes the
1466 class-precedence-lists of GENERIC-FUNCTION and
1467 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1469 * minor incompatible change: the default stream external format on
1470 non-unicode SBCL is no longer detected from the locale, but is always
1472 * new feature: Add a version of evaluator that uses an interpreter instead
1473 of the compiler. EVAL still uses the compiler by default, to switch it
1474 to use the interpreter, set the value of the variable
1475 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1476 * minor incompatible change: the single-stepper REPL has been merged
1477 with the normal debugger (see the "Stepping" heading of the debugger help
1478 for more details). The debugger command STEP will no longer switch
1479 to the single-stepper REPL.
1480 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1481 for a type now works.
1482 * bug fix: loading of default sysinit file works. (thanks to Leonid
1484 * bug fix: better detection of circularities in the file-compiler.
1485 (reported by Marco Monteiro)
1486 * bug fix: the CL pathname functions now work with files that have
1487 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1488 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1489 systems with Unix98 pty semantics.
1490 * bug fix: ASDF-INSTALL will now work with bsd tar.
1491 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1493 * bug fix: timers expiring in dead threads no longer cause a
1494 type-error (reported by Paul "Nonny Mouse").
1495 * bug fix: thanks to more lightweight single-stepper instrumentation,
1496 code compiled with (DEBUG 3) will compile and execute significantly faster,
1497 and will have more accurate type-inferencing than before
1498 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1499 whose bindings are modified
1500 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1501 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1502 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1503 CL:SOFTWARE-VERSION with proper version
1505 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1506 * feature: implemented the READER-METHOD-CLASS and
1507 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1508 as specified by AMOP.
1509 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1511 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1512 (thanks to Lutz Euler)
1513 * optimization: hashing of general arrays and vectors has been
1514 improved. (reported by Any Fingerhut)
1515 * enhancement: SB-INTROSPECT is now able to find definitions of
1516 profiled functions. (thanks to Troels Henriksen)
1517 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1518 as well, allowing compiler-macros for SETF-functions to expand.
1519 * enhancement: step-instrumentation no longer wraps known
1520 single-value functions with multiple-value context, allowing
1521 better type inference.
1522 * fixed bug #337: use of MAKE-METHOD in method combination now works
1523 even in the presence of user-defined method classes. (reported by
1524 Bruno Haible and Pascal Costanza)
1525 * fixed bug #339(c): if there are applicable methods not part of any
1526 long-form method-combination group, call INVALID-METHOD-ERROR.
1527 (reported by Bruno Haible)
1528 * fixed bug #361: the :FUNCTION initarg in the protocol for
1529 initialization of methods can now be used to override
1530 internally-produced optimized functions. (reported by Bruno
1532 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1533 system-provided lambda expression no longer cause warnings about
1534 unbound #:|pv-table| symbols.
1535 * bug fix: improved the handling of type declarations and the
1536 detection of violations for keyword arguments with non-constant
1538 * bug fix: potentially erronous calls to PATHNAME and
1539 MERGE-PATHNAMES were being flushed in some cases.
1540 (reported by Richard Kreuter)
1541 * bug fix: compiled calls to TYPEP were mishandling obsolete
1542 instances. (reported by James Bielman and Attila Lendvai)
1543 * bug fix: format strings with ~> without matching ~< no longer
1544 trigger an AVER, but signal an understandable error instead.
1545 (reported by Antonio Martinez)
1546 * bug fix: specifying an output-file without a pathname-type for
1547 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1548 of input-file instead of "fasl". (reported by Robert Dodier)
1549 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1550 (reported by James Y Knight).
1551 * bug fix: compiler-macros-function did not consider the environment
1552 argument for shadowing by local functions.
1553 * bug fix: compiler-macros expansion was inhibited by local INLINE
1555 * bug fix: inline expansions of known functions were subject to
1556 step-instrumentation in high debug policies, leading to problems
1557 with type-inference.
1558 * bug fix: compiler failed to differentiate between different CONS
1559 types in some cases.
1560 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1561 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1562 * bug fix: #368: incorrect use of expressed vs. upgraded array
1564 * bug fix: #306a: more precise unions of array types.
1565 * thread-safety improvements:
1566 ** CONDITION-WAIT could return early on Linux, if the thread was
1567 interrupted and subsequently continued with SIGCONT.
1568 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1570 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1571 * added support for the ucs-2 external format. (contributed by Ivan
1573 * minor incompatible change: pretty printing of objects of type
1574 (cons symbol) is, in the default pprint-dispatch-table, now
1575 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1577 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1578 called later in a class's lifetime, possibly as late as when the
1579 first instance of the class is created. Previously,
1580 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1581 class became finalizeable.
1582 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1583 for multibyte external-format streams. (thanks to "vbzoli")
1584 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1585 with :ALLOCATION :CLASS inherited from superclasses of the
1587 * fixed bug: anonymous classes can now be created using the :NAME
1588 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1589 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1590 * fixed bug: core-files saved with :EXECUTABLE T can again be
1591 executed when SBCL_HOME isn't set. (reported by James Knight)
1592 * fixed bug: toplevel LOCALLY forms with declarations could
1593 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1594 * fixed bug: printing from several different threads using different
1595 values of *print-case* could cause invalid output, due to
1596 some internal special variables of the printer not being bound
1597 thread-locally (reported by Max Mikhanosha)
1598 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1599 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1600 (reported by Pascal Costanza)
1601 * fixed bug: FINALIZE-INHERITANCE is called from
1602 REINITIALIZE-INSTANCE on classes when the class has previously
1603 been finalized, as required by AMOP.
1604 * minor code generation optimizations:
1605 ** better register allocation in CLOS dispatching functions
1606 ** overflow detection when coercing signed bytes to fixnums on x86-64
1607 ** is now implemented with one IMUL instruction instead of three shifts
1608 ** more efficient bit-vector access on x86 and x86-64
1609 ** more efficient access to raw structure slots on x86 and x86-64
1610 * fixed some bugs revealed by Paul Dietz' test suite:
1611 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1612 return its argument.
1614 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1615 * feature: thread support on Solaris/x86, and experimental thread support
1617 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1619 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1620 default method for SLOT-UNBOUND.
1621 * minor incompatible change: prevent the user from specializing the
1622 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1623 somewhat counter to the intent of the protocol, I (CSR) think, and
1624 additionally it just doesn't work in SBCL as currently
1625 implemented, thanks to optimizations (that are always valid for
1626 the other three SLOT-VALUEish functions, but not for the setter).
1627 * minor incompatible change: the :SB-LDB feature is now enabled by
1628 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1629 the low-level debugger.
1630 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1631 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1632 down to an SB-SYS:FD-STREAM, allowing direct communication in
1633 more cases. Temporary files and pipes are still used as a fallback
1635 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1636 on the non-reentrant C functions localtime(3) and gmtime(3).
1637 * bug fix: global optimization policy was not visible in LOCALLY and
1639 * bug fix: class objects can be used as specializers in methods.
1640 (reported by Pascal Costanza)
1641 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1642 with a type error. (reported by blitz_ on #lisp)
1643 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1644 failed with a type error. (reported by Pascal Bourguignon)
1645 * bug fix: merging pathnames against defaults with :DIRECTORY
1646 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1647 (reported by James Y Knight)
1648 * bug fix: saving large (>2GB) cores on x86-64 now works
1649 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1650 constant index and a (simple-array (signed-byte 32)) array
1651 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1652 error (patch by Robert J. Macomber)
1653 * feature: TIME now displays the amount of run-time spent in GC
1654 * bug fix: The debugger now does a better job of respecting
1655 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1656 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1657 workaround for bug 403.)
1658 * bug fix: floating point exception handling now works on FreeBSD
1659 (thanks to NIIMI Satoshi)
1660 * fixed some bugs revealed by Paul Dietz' test suite:
1661 ** MISC.641: LET-conversion were not supposed to work in late
1663 * improvements to the Win32/x86 port:
1664 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1665 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1667 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1668 * new feature: source path information is generated for macro-expansion
1669 errors for use in IDE's like Slime (thanks to Helmut Eller)
1670 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1671 * bug fix: compiler does not loop forever on an invalid type in
1673 * improvement: compilation of most CLOS applications is significantly
1675 * optimization: added a limited bytecode compiler for simple toplevel
1676 forms, speeding up compilation and FASL loading
1677 * bug fix: the statistical profiler now properly distinguishes anonymous
1680 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1681 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1682 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1683 into subclasses of the finalized class. Now user calls to
1684 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1685 system return before any subclasses are finalized.
1686 * minor incompatible change: The reader no longer ignores errors
1687 regarding non-existent packages in #+ and #- feature tests.
1688 * new feature: command line options --no-sysinit, --no-userinit to
1689 inhibit loading the corresponding init files
1690 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1691 for sending data through UDP sockets (thanks to François-René Rideau)
1692 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1693 error is signalled instead (thanks to François-René Rideau)
1694 * minor incompatible change: Error signalling behaviour of lexical
1695 operations violating package locks has changed slightly. Refer to
1696 documentation on package locks for details.
1697 * enhancement: EVAL can process IF-expressions without resorting to the
1699 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1700 constant-folded properly due to missing out-of-line functions.
1701 (reported by Mika Pihlajamäki)
1702 * bug fix: LISTEN sometimes returned T even in cases where no data was
1703 immediately available from the stream
1704 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1705 were reversed. (reported by Levente Mészáros)
1706 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1707 when given a vector displaced to an adjustable array. (reported
1709 * bug fix: derivation of float boundaries from numbers outside the
1710 appropriate float range (reported by John Wiseman)
1711 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1713 * bug fix: precomputing cache entries for generic functions with
1714 some subclasses of specializers as yet invalid does not attempt to
1715 fill a cache line with a negative offset. (reported by Levente
1717 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1718 allow condition class objects as arguments to DOCUMENTATION and
1719 (SETF DOCUMENTATION); only find and set documentation for
1720 structure names for the STRUCTURE doc-type. (suggested by Gary
1722 * improvements to the Win32/x86 port:
1723 ** (user-homedir-pathname) and default initialization file
1724 locations now know about the user's "Documents and Settings"
1725 directory (thanks to Yaroslav Kavenchuk)
1726 ** run-program is implemented (thanks to Mike Thomas)
1727 ** sockets support (thanks to Timothy Ritchey)
1728 ** better backtrace support (thanks to Alastair Bridgewater)
1729 ** sb-grovel supported
1730 ** asdf-install and sb-posix work somewhat
1731 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1732 * improvements to the Solaris/x86 port:
1733 ** works on Solaris 11/Solaris Express
1734 ** floating-point exception handling support
1735 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1736 * fixed some bugs revealed by Paul Dietz' test suite:
1737 ** REMOVE-METHOD returns its generic function argument even when
1738 the method is not one of the generic functions' methods.
1739 ** objects declared as MEMBER types can be admissible arguments to
1740 structure accessors.
1741 ** printing characters should simply be printed by the FORMAT ~:C
1743 ** compiler failure when compiling functions with hairy constant
1744 defaults for optional parameters.
1745 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1746 function, which is already optimized.
1748 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1749 * new platform: experimental support for SBCL x86/Darwin, including
1750 MacOS X 10.4.5 on Intel.
1751 * new feature: Unicode character names are now known to the system
1752 (through CHAR-NAME and NAME-CHAR).
1753 * new feature: the filesystem location of SBCL's core file is
1754 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1755 * minor incompatible change: the contrib modules SB-POSIX and
1756 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1757 this change is to make it easier to distribute
1758 location-independent binaries.
1759 * bug fix: as implied by AMOP, standardized classes no longer have
1760 slots named by external symbols of public packages. (reported by
1762 * optimization: calling functions via constant symbols -- as in
1763 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1764 via the function object as in (FUNCALL #'FOO).
1765 * optimization: on x86 and x86-64, the calling convention for the
1766 case of dealing with an unknown number of values has been altered
1767 to be friendlier to the prediction heuristics implemented,
1768 particularly with reference to CALL and RET pairing. (thanks to
1769 Alastair Bridgewater)
1770 * optimization: on x86, the code for access to thread-local symbol
1771 values and binding/unbinding of thread-local symbols is smaller.
1772 (thanks to Alastair Bridgewater)
1773 * enhancement: CONSTANTP is now able to determine constantness of
1774 more complex forms, including calls to constant-foldable standardized
1775 functions and some special forms beyond QUOTE.
1776 * fixed bug: occasional GC crashes on Solaris/x86
1777 * optimization: x86-64 supports stack allocation of results of simple
1778 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1779 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1780 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1781 (thanks to James Knight)
1782 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1783 by the standard (thanks to Stephen Compall)
1785 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1786 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1787 be used for bundling the runtime and the core file into one
1788 executable binary. This feature is not currently supported on all SBCL
1789 platforms. (thanks to James Bielman and NIIMI Satoshi)
1790 * new feature: a generational or ephemeral garbage collector is now
1791 the default on the PowerPC platform (both Linux and Darwin). The
1792 old Cheney (stop and copy) collector is a build-time option.
1793 (thanks to Cyrus Harmon, after Raymond Toy)
1794 * minor incompatible change: the method by which SBCL finds its
1795 contributed modules has changed; it no longer relies on symbolic
1796 links from an $SBCL_HOME/systems directory, but searches directly
1797 in the subdirectories of $SBCL_HOME.
1798 * enhancement: the dynamic heap size on the Linux/PPC platform is
1799 markedly larger, even using the older Cheney garbage collector.
1800 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1801 certain complicated string types. (reported by Gary King)
1802 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1803 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1804 * fixed bug: DOCUMENTATION on structures no longer signals an
1805 error if no structure type of the right name exists. (reported by
1807 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1808 applicable non-standard primary or :AROUND method on
1809 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1810 no longer cause unbound variable errors. (reported by Kevin Reid)
1811 * fixed bug: metacircle resolution in cases where methods have slots
1812 added before the slots from STANDARD-METHOD. (reported by Jean
1814 * fixed bug: the Power PC assembly code for calling into lisp
1815 sometimes computed its return address wrongly (depending on the
1816 15th bit of the address, fixed at link time). This used to
1817 manifest itself in a segmentation violation while building PCL.
1818 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1819 many others over the years)
1820 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1821 the stack pointer (treated as a signed integer) is negative.
1822 (thanks to Peter van Eynde)
1824 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1825 * new platform: experimental support for the Windows operating
1826 system has been added. (thanks to Alastair Bridgewater)
1827 * fixed several bugs in and robustified the PPC FFI (including
1828 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1829 * bug fix: allow non-simple string symbol names (reported by Paul
1831 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1833 * bug fix: saving a core corrupted callbacks on x86/x86-64
1834 * bug fix: closed a loophole in metacircularity detection and
1835 grounding in the PCL implementation of CLOS.
1836 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1837 (reported by tomppa on #lisp)
1838 * bug fix: clear the direction flag on Lisp -> C transitions, as
1839 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1840 (reported by Andrej Grozin and Hendrik Maryns)
1841 * optimization: major improvements to GC efficiency on GENCGC platforms
1842 * optimization: faster implementation of EQUAL
1843 * optimization: emit more efficient opcodes for some common
1844 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1845 * optimization: several other minor code-generation improvements on x86-64
1846 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1848 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1849 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1850 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1851 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1852 by ANSI as a generic function, and for consistency (SETF
1853 GENERIC-FUNCTION-NAME) is treated likewise.
1854 * fixed bug #233.b: make constraint propagation notice when a variable
1855 value is changed after it is referenced but before it is used
1856 * fixed bug #296: no more arbitrary behaviour from filenames with
1857 odd characters as --load arguments. (reported by Adam Warner)
1858 * fixed bug #390: :CHARACTER-SET pathname components now work as
1859 expected. (reported by Tim Daly Jr)
1860 * fixed bug #391: complicated :TYPE intersections in slot
1861 definitions no longer cause an error in PCL internals.
1862 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1863 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1864 returning the number of octets which would be written to the
1865 file-stream. (thanks to Robert J. Macomber)
1866 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1867 arguments to the internal stream functions. (thanks to David
1869 * bug fix: stack exhaustion is now handled on the x86/SunOS
1870 platform. (thanks to Daisuke Homma)
1871 * bug fix: more accurate ROOM results on GENCGC platforms
1872 * optimization: improved type inference for arithmetic-for
1873 index variables in LOOP
1874 * optimization: faster floating-point SQRT on x86-64
1875 * fixed some bugs revealed by Paul Dietz' test suite:
1876 ** DOCUMENTATION returns NIL instead of "" for method combinations
1877 that don't have a docstring
1879 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1880 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1881 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1882 therefore are not customizeable by user code (as seems to be at
1883 least permitted and maybe required by AMOP). As a consolation,
1884 however, the SBCL implementation of these functions now calls
1885 REINITIALIZE-INSTANCE as specified by AMOP.
1886 * bug fix: slot-definition documentation is propagated as per ANSI
1887 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1888 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1889 argument, as do eslotd initialization methods. (from Pascal
1890 Costanza's "Closer" project)
1891 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1892 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1894 * bug fix: it is now possible to have more than one subclass of
1895 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1896 (reported by Bruno Haible, Pascal Costanza and others)
1897 * bug fix: the dependent update protocol now works for generic
1898 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1899 and Pascal Costanza)
1900 * bug fix: condition-class instances corresponding to
1901 DEFINE-CONDITION forms are now created eagerly. (reported by
1902 Kalle Olavi Niemitalo on comp.lang.lisp)
1903 * bug fix: floating point printing is more accurate in some
1904 circumstances. (thanks to Simon Alexander)
1905 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1906 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1907 * bug fix: callbacks on OS X now preserve stack-alignment.
1908 (thanks to Cyrus Harmon)
1909 * enhancement: the x86-64 disassembler is much better at
1910 disassembling SSE instructions. (thanks to Lutz Euler)
1911 * enhancement: CHECK-TYPE on a variable now allows type-inference
1912 (thanks to Vincent Arkesteijn)
1913 * optimization: improved performance of EUC-JP external format.
1914 (thanks to NIIMI Satoshi)
1915 * optimization: performance improvements to IO on file streams of
1916 :ELEMENT-TYPE CHARACTER
1917 * optimization: much faster memory allocation on x86-64
1918 * optimization: faster garbage collections (latency and throughput)
1920 * optimization: faster bignum subtraction and division on x86 and x86-64
1921 (thanks to Lutz Euler)
1922 * optimization: more accurate type-inference for loops that use a
1923 floating point index variable or a negative step.
1925 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1926 * bug fix: add a workaround to SBCL looping infinitely at startup on
1927 Linux kernels with apparently buggy implementations of personality().
1928 (thanks to Svein Ove Aas)
1929 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1930 (thanks to David Lichteblau)
1931 * bug fix: local bindings shadow global symbol macros for
1932 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1933 * optimization: non-open coded uses of numeric comparison operators
1934 (e.g. >) no longer cons when called with more than one parameter
1935 on platforms supporting dynamic-extent allocation.
1936 * enhancement: saving cores with foreign code loaded is now supported
1937 on MIPS/Linux in addition to the previously supported platforms.
1938 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1939 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1940 * bug fix: division by zero in sb-sprof when no samples were collected
1941 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1942 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1943 (thanks to Alexander Kjeldaas)
1944 * new feature: ignoring the return values of destructive functions
1945 like NREVERSE signals a compile-time style-warning.
1946 (thanks to Kevin Reid)
1947 * new feature: the alignment of alien structure fields can be
1948 explicitly specified. (thanks to Cyrus Harmon)
1949 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1950 and dump core on SIGQUIT
1952 ** incompatible change: threads do not inherit values of specials
1953 from their parents (see manual)
1954 ** bug fix: threads stacks belonging to dead threads are freed by the
1955 next exiting thread, no need to gc to collect thread stacks anymore
1956 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1957 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1958 ** bug fix: dynamic variable and thread start related gc lossage
1959 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1961 * fixed some bugs revealed by Paul Dietz' test suite:
1962 ** SUBTYPEP is slightly more accurate on heinously complicated
1963 CONS types where some of the members have uncertain (in the
1964 NIL, NIL sense) type relationships to each other.
1966 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1967 no longer purified unless :PURIFY T is explicitly specified.
1968 ** Non-purified cores are significantly smaller than before
1970 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1971 * new feature: timers based on Zach Beane's excellent timer package
1972 * added support for the following external formats: koi8-u,
1973 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1974 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1975 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1976 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1977 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1978 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1979 * incompatible change: a threaded SBCL will no longer revert to
1980 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1981 * bug fix: interrupts are disabled until startup is complete; no
1982 more sigsegvs when receiving a signal to soon
1983 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1985 * bug fix: add a workaround for the memory randomization features in
1986 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1987 workaround will only be in effect on systems with the proc filesystem
1989 * bug fix: printing objects of type HASH-TABLE signals a
1990 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1992 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1993 have been running for over 50 days. (reported by Gilbert Baumann)
1994 * bug fix: the logic for getting names of functions gets less
1995 confused when confronded with alternate-metaclass
1996 funcallable-instances. (reported by Cyrus Harmon)
1997 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1998 consistent, even on internal alternate-metaclass objects.
1999 * bug fix: flush closure information collected by physical
2000 environment analysis prepass before the main pass. (bug reported
2002 * bug fix: compiler pack phase does not modify a hashtable, which is
2003 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2004 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2005 may be expanded. (reported by Alexander <malishev> on c.l.l)
2006 * bug fix: no more style-warnings when compiling code using LAST
2007 under high-SPEED low-SPACE settings. (reported by David Wallin
2009 * fixed some incompatibilities between SBCL's MOP and the MOP
2011 ** the METAOBJECT class is now implemented;
2012 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2013 STANDARD-OBJECT, as required;
2014 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2015 now compatible (as required by VALIDATE-SUPERCLASS); there
2016 remains a consistency requirement over the presence or absence
2017 of the FUNCTION class in the superclass list of finalized
2018 classes; see the manual for more details;
2019 ** the :AROUND method for COMPUTE-SLOTS on
2020 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2021 requested slot ordering.
2023 ** bug fix: parent thread now can be gc'ed even with a live
2025 ** bug fix: binding a special with PROGV to no value is not
2026 the same as that symbol not having been bound (thanks to
2028 ** bug fix: binding specials is thread safe (thanks to
2030 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2031 and SB-SPROF do not die with 'no handler for signal XX in
2032 interrupt_handle_now(..)' anymore
2033 ** bug fix: WITH-TIMEOUT works with multiple running threads
2034 * fixed some bugs revealed by Paul Dietz' test suite:
2035 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2036 the :method-class keyword argument.
2038 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2039 * new port: the Solaris operating system on x86 processors is now
2040 mostly supported, though some rough edges in the environment
2041 remain. (thanks to Daisuke Homma)
2042 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2043 space for its heap. (thanks to Thiemo Seufer)
2044 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2045 closures. (thanks to Thiemo Seufer)
2046 * minor incompatible change: eof selects abort in the debugger.
2047 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2048 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2050 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2051 deprecated, and will go away in a future revision of SBCL.
2052 * minor incompatible change: GC-ON and GC-OFF are no longer
2053 implemented with a counter, it does not matter how many times gc
2054 is switched on or off
2055 * bug fix: discriminating functions for generic function classes
2056 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2057 make invalid assumptions about method precedence order. (reported
2059 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2060 platforms. (thanks to Thiemo Seufer)
2061 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2062 * bug fix: correct pathname printing with printer escaping is on.
2063 (thanks to Kevin Reid)
2064 * bug fix: complex VOP definitions in "user-space" no longer trigger
2065 package locks. (reported by Zach Beane)
2066 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2067 for funcallable-instance functions, and is no different from
2069 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2070 characters in the current readtable. (reported by Nicholas Neuss)
2071 * bug fix: SUBTYPEP on various CONS types returns more a more
2072 accurate acknowledgment of its certainty.
2073 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2074 lists in some cases. This partially fixes bug 384.
2075 * flush all standard streams before prompting in the REPL and the
2077 * bug fix: signal handling and triggering gc do not conflict
2078 directly anymore, in particular a high frequency sb-sprof does
2079 not prevent gc from running
2080 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2081 approximation for timezone and DST information between the
2082 universal time epoch and the smallest negative 32-bit time_t.
2083 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2084 year 1899 so long as the encoded time is non-negative.
2085 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2086 the correct answer for non-constant rotate amounts when performing
2087 an inline 32-bit rotation.
2089 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2090 there is only one thread in the session
2091 ** bug fix: memory leak for streams created in one thread and
2092 written to in another
2093 ** bug fix: lockup when compiled with gcc4
2094 ** bug fix: race that allows the gc to be triggered when gc is
2096 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2097 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2099 ** bug fix: finished threads are gc'ed properly
2100 * fixed some bugs revealed by Paul Dietz' test suite:
2101 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2102 has arguments with a different set of applicable methods from
2103 the orignal arguments.
2104 ** The type error thrown by MAP now has a correct expected-type
2106 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2107 name a compiled function.
2108 ** Three MISC tests where a large bignum was improperly coerced to
2109 a float that couldn't represent that bignum during type
2110 derivation were fixed.
2111 ** SUBTYPEP can now handle types involving the negation of a
2112 list-form FUNCTION type.
2113 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2114 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2115 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2117 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2118 * New feature: Experimental support for bivalent streams: streams
2119 opened with :element-type :default now allow character and binary
2120 (unsigned-byte 8) I/O
2121 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2122 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2124 * bug fix: no more highly sporadic "couldn't check whether ~S is
2125 readable" when reading a stream and an interrupt hits in the middle
2126 of a select system call
2127 * compiler better recognizes complex arrays (reported by Eduardo
2129 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2130 for variables on SBCL built with linkage-tables. (reported by Luis
2132 * various error reporting improvements.
2133 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2134 (Thanks to Thiemo Seufer)
2135 * bug fix: nested reader invokations work correctly
2136 * bug fix: it is possible to have simultaneous references to foreign
2137 code and foreign data with the same name.
2139 ** added x86-64 support
2140 ** incompatible change: the threading api now works with thread
2141 objects instead of thread ids
2142 ** bug fix: threads are protected from signals and interruption when
2143 starting up or going down
2144 ** bug fix: a race where an exiting thread could lose its stack to gc
2145 ** bug fix: don't halt on infinite error in threads if possible
2146 ** fixed numerous gc deadlocks introduced in the pthread merge
2147 ** bug fix: fixed thread safety issues in read and print
2148 ** bug fix: debugger doesn't hang on session lock if interrupted at
2149 an inappropriate moment
2150 ** bug fix: run-program is now thread safe(r)
2151 ** bug fix: inner with-recursive-lock no longer releases the mutex
2152 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2153 * fixed some bugs revealed by Paul Dietz' test suite:
2154 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2155 EXPECTED-TYPE slots filled.
2156 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2158 ** MAKE-CONDITION accepts classes as type-designators.
2159 ** COMPILE may never return NIL.
2160 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2161 range before calling Unix time functions
2163 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2164 * numerous signal handling fixes to increase stability
2165 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2166 * minor incompatible change: we now correctly canonize default
2167 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2168 as per the MOP, rather than the historical (INITARG INITFUNCTION
2169 INITFORM). (reported by Bruno Haible)
2170 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2171 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2172 for more information.
2173 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2174 pathname is a directory pathname.
2175 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2176 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2178 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2179 :METACLASS argument in addition to a class name. (reported by
2180 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2181 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2182 (reported by Bruno Haible; patch from Gerd Moellmann)
2183 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2185 * bug fix: more cleanups to the floating point exception handling on
2186 x86-64 (thanks to James Knight)
2187 * bug fix: the compiler does not try to constant fold calls of
2188 COERCE and BIT-* functions when they return freshly constructed
2189 objects. (reported by Nikodemus Siivola and Paul Dietz)
2190 * optimization: improved the MIPS versions of generic (in the
2191 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2192 * optimization: direct conversion of (unsigned-byte 32) to floats on
2193 the PowerPC platform.
2194 * optimization: structure instances with raw slots now use less
2195 memory, and probably show better memory locality. (thanks to
2197 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2198 are treated as requests for stack allocation on the x86-64,
2199 Alpha-32, PPC and SPARC platforms.
2200 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2201 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2202 (thanks to Tony Martinez)
2204 ** gcing a dead thread can no longer lead to lockups
2205 ** threads block signals until they are set up properly
2206 ** errno is no longer shared by threads
2207 ** interrupt-thread restores the eflags register on x86
2208 ** fixed some lockups due to gc/thread interaction
2209 * fixed some bugs revealed by Paul Dietz' test suite:
2210 ** invalid dotted lists no longer raise a read error when
2211 *READ-SUPPRESS* is T
2212 ** signal an error if a symbol that names a declaration is used
2213 as the name of a type, or vice versa
2214 ** allow using the (declare (typespec var*)) abbreviation for
2215 (declare (type typespec var*)) with all type specifiers
2216 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2217 ** always return NIL from PPRINT-POP when OBJECT is NIL
2218 ** don't signal errors when pretty-printing malformed LABELS,
2219 FLET or MACROLET forms
2220 ** declarations in a DOLIST body are also in scope for the
2222 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2224 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2227 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2228 * fixed cross-compiler leakages that prevented building a 32-bit
2229 target with a 64-bit host compiler.
2230 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2231 opened with :IF-EXISTS :OVERWRITE.
2232 * fixed bug 281: error for an invalid qualifier in a short-form method
2233 combination method is not signalled until the faulty method is called.
2234 * bug fix: iteration variable type inferrer failed to deal with open
2235 intervals. (reported by Alan Shields)
2236 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2237 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2238 or more runtime options were provided to the sbcl binary.
2239 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2240 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2241 * optimization: there's now a fast-path for fixnum arguments in the
2242 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2243 * optimization: the code generated on x86-64 is more compact thanks
2244 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2245 * bug fix: floating-point exception handling now partly works on
2246 x86-64. (Thanks to James Knight)
2247 * improvement to the MIPS backend from Thiemo Seufer: C-style
2248 64-bit long long arguments and return values to alien functions
2250 * fixed some bugs revealed by Paul Dietz' test suite:
2251 ** the type-error signalled from WARN has a filled-in DATUM slot.
2252 ** the type-error required when a stream is not associated with
2253 a file has the stream as its datum.
2254 ** type-errors on single-floats on x86-64 no longer have
2255 :INVALID-OBJECT as the datum
2256 ** the type-errors signalled for invalid function names now have
2257 a correct expected type
2258 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2259 for structures defined with a :TYPE. Documentation strings for
2260 typed structures are no longer immediately discarded
2261 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2262 broadcast streams and synonym streams. FILE-LENGTH now also works
2263 on broadcast streams.
2265 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2266 * incompatible change: the --noprogrammer option, deprecated since
2267 version 0.7.5, has been removed. Please use the equivalent
2268 --disable-debugger option instead.
2269 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2271 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2272 inoperational for a while now) has been completely removed.
2273 * null lexical environments are now printed as #<NULL-LEXENV>,
2274 significantly reducing the amount of clutter in typical backtraces.
2275 * documentation on weak pointers, finalization, and after GC hooks
2276 has been added to the manual.
2277 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2278 as other specialized array types, is much faster. SUBSEQ and
2279 COPY-SEQ on such arrays have also been sped up.
2280 * optimization: EQL is now more efficient when at least other argument
2281 is known to be of type (OR FIXNUM (NOT NUMBER)).
2282 * fixed bug: the runtime is now less vulnerable to changes in the
2283 size of the SBCL object on OS X, and virtual memory is reserved for
2284 all spaces that need to be at a fixed address.
2285 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2286 * fixed bug: finalizers and after GC hooks that cause consing are now
2288 * fixed bug: compiler error messages and summaries are now printed to
2289 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2290 * fixed inference of the upper bound of an iteration variable.
2291 (reported by Rajat Datta).
2292 * fixed bug 211e: calling local functions with duplicated constant
2293 keyword argument no longer causes a bogus style warning about an
2295 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2296 ftype declaration to be disregarded. (reported by Dave Roberts)
2297 * fixed bug 373: caused by erronous compilation of references to alien
2298 variables in the runtime on ppc/darwin.
2299 * fixed bug 376: CONJUGATE type deriver.
2300 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2301 (reported by Baughn on #lisp)
2302 * a cross-compiler bug on non-x86 platforms has been identified and
2303 fixed. (thanks to Bruno Haible)
2304 * improvements to the MIPS runtime code for increased stability.
2305 (thanks to Thiemo Seufer)
2306 * increased the maximimum compact environment size to allow
2307 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2308 * partial workaround for bug 135: don't name the function we're
2309 calling for hairy cases of EVAL, so as not to accumulate one environment
2310 entry per call to EVAL. (reported by Kevin Reid)
2311 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2312 * optimization: type testing for non-vector arrays should be faster.
2313 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2315 * bug fix: setting 31st element of a bit vector to zero did not work
2317 * bug fix: redefining a class definition which failed due to a
2318 previous accessor / function clash now works (but see BUGS entry
2319 #380 for more problems in this area). (thanks to Zach Beane)
2320 * the long form of DEFINE-METHOD-COMBINATION disables method group
2321 checking when given a single method group with pattern *. (thanks
2323 * on x86 compiler supports stack allocation of results of simple
2324 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2325 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2326 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2327 * fixed some bugs related to Unicode integration:
2328 ** the restarts for recovering from input and output encoding
2329 errors only appear when there is in fact such an error to
2331 * fixed some bugs revealed by Paul Dietz' test suite:
2332 ** MISC.549 and similar: late transformation of unsafe type
2333 assertions into derived types caused unexpected code
2335 ** SCALE-FLOAT type deriver is less wrong.
2336 ** type derivers for EXP, LOG and similar functions compute result
2337 types for complex arguments better.
2338 ** (MISC.563) CONJUGATE type deriver works for very restricted
2340 ** out-of-line type testers for character strings are available.
2341 ** EQUAL compiler transform understands specialness of objects
2343 ** accessing double-floats stored on the stack now works on x86-64.
2344 ** debugger internals could sometimes create invalid lispobjs,
2345 resulting in GC crashes.
2346 ** MISC.548: type check weakening can convert required type into
2348 ** initialization forms for bindings are not in scope of free special
2351 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2352 * incompatible change: thread support for non-NPTL systems has
2353 been removed - locking is buggy and unreliable. A threaded
2354 SBCL build will now warn at startup and refuse to create
2355 new threads, unless futex support is detected in the kernel
2356 * incompatible change: the top level REPL now has only an ABORT
2357 restart associated with it, not TOPLEVEL and ABORT as it used to.
2358 TOP and TOPLEVEL are now available as debugger commands for
2359 returning to the top level.
2360 * incompatible change: forms evaluated in the REPL now use the
2361 global optimization policy.
2362 * incompatible change: user- and system-initialization files are
2363 no longer processed with LOAD, but by READ and EVAL; hence the
2364 global optimization policy, startup package, readtable, etc,
2366 * The .fasl file format number has been incremented because of
2367 various incompatible changes.
2368 * internal entry point details and argument counts no longer appear
2369 in backtraces unless explicitly requested by setting
2370 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2371 * built-in and standard functions no longer have names like "top
2372 level local call to FOO".
2373 * fixed bug 32: functions defined in non-null lexical environments
2374 now have more legible printed representation
2375 * fixed bug 33: functions defined in non-null lexical environemnts
2376 are now more amenable to inspection by INSPECT.
2377 * workaround for bug 354: XEPs no longer appear in backtraces unless
2378 explicitly requested.
2379 * fixed bug: receiving the signal which results from attempting to
2380 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2381 SIGBUS on other *BSDs) on architectures where the C stack is also
2382 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2383 to debugger confusion or wild instability. (reported by Cheuksan
2385 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2386 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2387 (reported by Lutz Euler)
2388 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2389 compiled code. (reported by Paul Dietz)
2390 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2391 specialized parameter to a method to something that is not TYPEP
2392 the specializer is now possible.
2393 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2394 face of package deletion.
2395 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2396 pathname. (reported by David Tolpin on c.l.l)
2397 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2398 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2399 STRING-STREAM and FILE-STREAM, respectively.
2400 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2401 than previously; in addition, its test suite is now run on build.
2402 (thanks to Luke Gorrie)
2403 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2404 * optimization: added a immediate representation for single-floats
2406 * fixed some bugs revealed by Paul Dietz' test suite:
2407 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2408 ** attempting to create a package with a colliding nickname causes
2409 correctable errors to be signalled.
2410 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2411 ** several x86-64 backend bugs related to sign-extension of immediate
2414 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2415 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2416 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2418 * fixed loading of multiply forward-referenced layouts.
2419 (thanks to Cheuksan Wang)
2420 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2421 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2422 (see COMPILE-FILE documentation for details of :PRINT option)
2423 * fixed bugs 19 and 317: fixed-format floating point printing is
2424 more accurate. This also fixes a bug reported by Adam Warner
2425 related to the ~@F format directive.
2426 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2428 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2429 dispatch table if the from-char is a dispatch macro character.
2430 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2431 by the wordsize no longer ignore the last word. (reported by Lutz
2433 * fixed bug in type checking of dynamic-extent variables. (reported
2435 * optimization: sequence traversal functions use their freedom to
2436 coerce function designators to functions.
2437 * optimization: code with many calls to CLOS methods specialized on
2438 CLOS classes has had redundant type checks removed.
2439 * optimization: added declarations to speed up operations that access
2440 the internal character database (for example STRING-UPCASE)
2441 * optimization: comparison operations between floats and sufficiently small
2442 fixnums no longer create extra rationals
2443 * fixed some bugs related to Unicode integration:
2444 ** portions of multibyte characters at the end of buffers for
2445 character-based file input are correctly transferred to the
2446 start of the buffer at the next read.
2447 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2448 passing it through to OPEN.
2449 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2450 argument given to internal calls to OPEN.
2451 ** the built-in comment readers (introduced by character sequences
2452 ";" and "#|") are more forgiving to encoding errors; they will
2453 STYLE-WARN and then attempt to resync the stream at a character
2454 boundary. (thanks to Teemu Kalvas)
2455 * fixed some bugs in the x86-64 port:
2456 ** Negative short int return values from c-calls are sign-extended
2458 ** The stack is aligned to 16-bytes for c-calls, as required by
2459 the ABI. (thanks to Cheuksan Wang)
2460 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2461 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2462 for enums. (thanks to Vincent Arkesteijn)
2463 ** Multiple small optimizations and bugfixes for floating point
2465 * fixed some bugs revealed by Paul Dietz' test suite:
2466 ** Space, Tab, Linefeed, Return and Page have the invalid
2467 secondary constituent character trait.
2468 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2470 ** WITH-INPUT-FROM-STRING should only update the index place on
2472 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2473 works more reliably.
2474 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2475 with one-dimensional arrays with fill pointers.
2476 ** TYPE-OF failed on a complex with an integer realpart and a
2478 ** compiler failure during type inference for the code of form
2479 (IF (EQL X (THE ...)) ...) (MISC.535).
2481 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2482 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2483 platform. The port supports 61-bit fixnums, large memory spaces
2484 and reloading shared object files.
2485 * enhancement: saving cores with foreign code loaded is now
2486 supported on ppc/Darwin in addition to the previously supported
2488 * enhancement: the statistical profiler now walks deeper into the
2489 call stack for more meaningful call-graphs and accrued time
2490 reports (x86/x86-64 only). It also now reports time spent in
2492 * enhancement: it is now possible to trace most individual methods
2493 of a generic function in addition to tracing the generic function
2495 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2497 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2498 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2499 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2500 produces an error. (thanks to Vincent Arkesteijn)
2501 * bug fix: NAMESTRING on pathnames with :WILD components in their
2502 directories works correctly. (thanks to Artem V. Andreev)
2503 * fixed bug 125: compiler preserves identity of closures. (reported
2505 * bug fixed: functions with &REST arguments sometimes failed with
2506 "Undefined function" when compiled with (DEBUG 3). (reported by
2508 * bug fix: overflow during compiling of setting element of a bit
2509 vector with constant index and value. (reported by Timmy Douglas)
2510 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2511 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2512 * on x86 compiler partially supports stack allocation of dynamic-extent
2514 * GO and RETURN-FROM do not check the extent of their exit points
2515 when compiled with SAFETY 0.
2516 * fixed some bugs related to Unicode integration:
2517 ** encoding and decoding errors are now much more robustly
2518 handled; it should now be possible to recover even from invalid
2519 input or output to the terminal. (thanks to Teemu Kalvas)
2520 ** provided a first cut at implementing STRING-TO-OCTETS and
2521 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2522 ** altered the SB-MD5 contributed module slightly, changing the
2523 interface just enough for it to be supportable for builds where
2524 lisp characters are not eight bits.
2525 * fixed some bugs revealed by Paul Dietz' test suite:
2526 ** the FORMATTER-generated functions for ~V[ conditionals require
2527 the correct number of arguments.
2528 ** READ-FROM-STRING returns the mandated second value when applied
2529 to displaced strings.
2530 ** the #\Rubout and #\Backspace characters are treated as invalid
2531 constituent characters by the tokenizer.
2533 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2534 * new feature: reloading changed shared object files with
2535 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2536 * new feature: references to foreign variables and functions
2537 can now be compiled and loaded before the corresponding shared
2538 object file is loaded, as long as the foreign definitions are
2539 available at runtime.
2540 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2541 supported. (thanks to Dan Debertin)
2542 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2543 just keywords. (thanks to Vincent Arkesteijn)
2544 * fixed bug #331: structure-class instances corresponding to
2545 DEFSTRUCT forms are now created eagerly.
2546 * fixed bug #345: backtraces from calls to undefined functions work
2547 on x86 as well. Related bug #61 is now also partially fixed on x86
2548 (backtraces from throws to unknown catch tags.)
2549 * bug fix: lambda-list parsing is now stricter vrt. order and number
2550 of lambda-list keywords.
2551 * bug fix: as specified by AMOP, an error is signalled if a
2552 class-option appears multiple times in a DEFCLASS form. (reported
2554 * bug fix: RANDOM can be compiled when the compiler derives the type
2555 of its numeric argument as a disjoint set of small integers.
2556 (reported by Paul Dietz)
2557 * bug fix: starting a core saved with shared objects loaded when
2558 those objects are not available no longer causes threaded SBCL to
2559 hang. (reported by Sean Ross)
2560 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2562 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2563 argument, which must always be NIL. (reported by Kalle Niemitalo)
2564 * bug fix: printing 1.0d+23 no longer results in an error.
2565 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2566 * bug fix: structure slot setters preserve evaluation order. (thanks
2568 * fixed some bugs related to Unicode integration:
2569 ** RUN-PROGRAM can allow its child to take input from a Lisp
2570 stream. (reported by Stefan Scholl)
2571 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2572 locales. (reported by Ken Causey)
2573 * fixed some bugs revealed by Paul Dietz' test suite:
2574 ** INCF, DECF and REMF evaluate their place form as specified in
2576 ** FORMATTER expands ~{ ~} iteration directives with V or #
2577 parameters correctly.
2578 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2579 consequent uses no arguments correctly.
2580 ** the system has a partial understanding of the (COMPLEX RATIO)
2582 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2585 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2586 * new feature: a build-time option (controlled by the :SB-UNICODE
2587 keyword feature, enabled by default) for building the system with
2588 support for the entire 21-bit character space defined by the
2590 * new feature: the system now has rudimentary external-format
2591 support; the primary user-visible change at this time is that
2592 characters with the high bit set (such as lower-case-e-acute) will
2593 print correctly to a terminal in a UTF-8 environment.
2594 * minor incompatible change: BASE-CHAR no longer names a class;
2595 however, CHARACTER continues to do so, as required by ANSI.
2596 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2597 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2598 has been moved to the SB-EXT package (temporarily re-exported from
2600 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2601 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2603 * fixed bug #351: better error-handlind and reporting for malformed
2605 * fixed bug #350: bignum-printing is now more memory-efficient,
2606 allowing printing of very large bignums, eg. (expt 2 10000000).
2607 (reported by Bruno Haible)
2608 * fixed bug #302: better primitive-type selection for intersection
2610 * fixed bug #308: non-graphic characters now all have names, as
2611 required. (reported by Bruno Haible)
2612 * bug fix: redefining a class with different superclasses now correctly
2613 removes it from the direct-subclasses of its previous superclasses.
2614 (reported by David Morse)
2615 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2616 new value now works. (reported by Bruno Haible)
2617 * bug fix: correct canonicalization of multiple non-standard slot
2618 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2619 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2620 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2621 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2622 now exists, an signals an error.
2623 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2624 during macroexpansion for non-iteration variables as well. (reported
2625 by Bruno Haible for CMUCL)
2626 * bug fix: Cyclic structures and unprintable objects in compiler
2627 messages no longer cause errors. (reported by Bruno Haible)
2628 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2629 and READ-FROM-STRING all now return a primary value of NIL if
2630 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2631 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2632 (reported by Bruno Haible for CMUCL)
2633 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2634 do not designate a condition. (reported by Bruno Haible for
2636 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2637 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2638 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2639 permitting resolution in favour of any of the conflicting symbols.
2640 (reported by Bruno Haible for CMUCL)
2641 * bug fix: EQUAL compiler optimizations is less aggressive on
2642 strings which can potentially compare true despite having distinct
2643 specialized array element types.
2644 * bug fix: unit enumerations can be defined without dividing by
2645 zero. (thanks to Vincent Arkesteijn)
2646 * FORMAT compile-time argument count checking has been enhanced.
2647 (report from Bruno Haible for CMUCL)
2648 * a partial workaround for the bug 262: the compiler does not try to
2649 inline-expand a local function doing RETURN-FROM from a deleted
2650 BLOCK. (thanks to Peter Denno for the bug report and to David
2651 Wragg for the simple test case)
2652 * fixed some bugs revealed by Paul Dietz' test suite:
2653 ** RENAME-PACKAGE allows all package designators as new package
2655 ** constraint propagation and lambda variable substitution are
2656 more cautious in dealing with partially deleted code.
2657 ** compiler sometimes lost reoptimization passes.
2658 ** CERROR, given a condition as condition designator, passes its
2659 remaining arguments to the continue format control without
2661 ** Case-altering FORMAT directives work correctly on non-ASCII
2663 ** The REAL type specifier handles bounds outside the floating
2664 point ranges without signalling FLOATING-POINT-OVERFLOW.
2665 ** Functions with IR1-transformations can create intercomponent
2666 references to global functions.
2667 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2669 ** FORMAT ~R treats a nil value for its first parameter correctly.
2671 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2672 * enhancement: saving cores with foreign code loaded is now
2673 supported on x86/NetBSD and sparc/Linux in addition to the previously
2674 supported platforms.
2675 * bug fix: on some platforms repeated installations caused multiple
2676 copies of HTML documentation to be installed -- should not happen
2677 any more. (reported by Stefan Scholl)
2678 * bug fix: parsing self-recursive alien record types multiple times
2679 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2680 original patch by Helmut Eller for CMUCL)
2681 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2682 (thanks to Richard Kreuter)
2683 * bug fix: defining classes whose accessors are methods on existing
2684 generic functions in other (locked) packages no longer signals
2685 bogus package lock violations. (reported by François-René Rideau)
2686 * bug fix: special variables as DEFMETHOD parameters no longer have
2687 associated bogus type declarations. (reported by David Wragg and
2689 * bug fix: read-write consistency on streams of element-type
2690 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2691 * bug fix: redefiniton of the only method of a generic function with
2692 no DEFGENERIC no longer emits a full WARNING. In addition,
2693 redefinition of generic functions with no DEFGENERIC to an
2694 incompatible lambda list now signals an error. (thanks to Zach
2696 * bug fix: DEFGENERIC now works even when there's a function of the
2697 same name in an enclosing lexical environment. (thanks to Zach
2699 * fixed compiler failure, caused by instrumenting code during
2700 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2701 * optimization: added loop analysis and improved register allocation
2702 * fixed some bugs revealed by Paul Dietz' test suite:
2703 ** POSITION on displaced vectors with non-zero displacement
2704 returns the right answer.
2705 ** (SIMPLE-STRING) is a valid type specifier for sequence
2707 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2709 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2710 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2712 ** The justification version of the FORMAT ~< directive treats
2713 non-zero minpad parameter correctly.
2715 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2716 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2717 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2718 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2719 the supported interface.
2720 * new feature: Single-stepping of code compiled with DEBUG 2 or
2721 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2722 * new feature: saving cores with foreign code loaded is now
2723 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2724 Timothy Moore's work for CMUCL)
2725 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2726 parameters to * instead of NIL if no initform is supplied.
2727 (reported by Johan Bockgaard)
2728 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2729 correctly when FUNCALL appears as the car of the form. Note:
2730 despite this FUNCALL forms are not currently subject to
2731 compiler-macro expansion. (port of Raymond Toy's fix for the
2732 same from CMUCL, reported by Johan Bockgaard)
2733 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2734 (thanks for Teemu Kalvas)
2735 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2736 case instead of terminating the iteration (thanks for Julian
2737 Squires, Sean Champ and Raymond Toy)
2738 * bug fix: incorrect expansion of defgeneric that caused a style
2739 warning. (thanks for Zach Beane)
2740 * bug fix: slot accessor effective method computation works properly
2741 for classes with multiple non-standard applicable methods on
2742 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2743 * on x86 compiler supports stack allocation of results of LIST and
2744 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2745 CMUCL implementation by Gerd Moellmann)
2746 * fixed some bugs revealed by Paul Dietz' test suite:
2747 ** FORMAT strings with both the ~<~:;~> form of the justification
2748 directive and pretty-printing directives cause an error.
2750 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2751 * incompatible change: the internal functions
2752 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2753 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2754 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2755 instead of the old functions.
2756 * new feature: on platforms where "dladdr" is available foreign
2757 function names now appear in backtraces. (based on Helmut Eller's
2759 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2760 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2762 * documentation: ASDF manual is now distributed with SBCL.
2763 * bug fix: SBCL can now load its contributed modules with REQUIRE
2764 even if the system-provided entries have been removed from
2765 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2767 * bug fix: backtraces involving undefined functions or assembly
2768 routines are more informative. (thanks to Brian Downing)
2769 * bug fix: mutually referent alien structures now work correctly.
2770 (reported by Rick Taube)
2771 * bug fix: structures defined by WITH-ALIEN can be referred to
2772 within other definitions in the same WITH-ALIEN.
2773 * bug fix: division operators (MOD, TRUNCATE and the like) with
2774 constant zero divisors and integer dividends no longer generate
2776 * bug fix: provide default methods for INPUT-STREAM-P and
2777 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2778 * bug fix: improve the detection and resolution of MOP metacycles
2779 (where effective method computation depends on the generic function
2780 having its effective method computed). (reported by Bruno Haible)
2781 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2782 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2783 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2784 * bug fix: pathnames with relative directory components can be
2785 represented relative to default pathnames.
2786 * optimization: in taking the GCD of bignums, reduce the two bignums
2787 to approximately the same size (using Euclid's algorithm) before
2788 applying the more sophisticated binary GCD. (thanks to Juho
2790 * optimization: COUNT on bitvectors now operates word-at-a-time.
2791 * optimization: ASH with a positive, but not necessarily constant,
2792 (leftwards) shift, when in a modular context, is compiled to a
2794 * fixed some bugs revealed by Paul Dietz' test suite:
2795 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2796 if the corresponding argument is NIL.
2797 ** FORMAT directives accepting a minpad parameter treat negative
2799 ** literal commas as character parameters to FORMAT directives are
2801 ** literal spaces directly after ~<Newline> directives within a
2802 format-logical-block (~:< ~@:>) do not induce :FILL-style
2803 conditional newlines.
2804 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2805 as specified: it no longer includes conditional newlines).
2806 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2808 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2809 :PER-LINE-PREFIX argument does not evaluate to a string.
2811 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2812 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2813 the manual for details; for now, package locks can be disabled by
2814 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2815 if no major problems are found then it is likely that they will be
2816 compiled in unconditionally.
2817 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2818 unsupported operators on all platforms. To load a shared library
2819 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2820 object file, link it into a shared library outside of SBCL and
2821 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2823 * bug workaround: ROOM T and the GC were not working together
2824 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2825 reporting facility aren't preserved. That reporting has been
2826 disabled, so now until and unless someone figures out how to make it
2827 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2828 * minor incompatible change: as threatened around sbcl-0.8.0, the
2829 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2830 The symbols are also exported from SB-PCL for backwards
2831 compatibility, but more so than before SB-PCL should be treated as
2832 an implementation-internal package.
2833 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2835 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2836 It is known as of this release not to work on the Alpha, however.
2837 * fixed bug #167: errors signalled due to illegal syntax in method
2838 bodies are now more legible.
2839 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2840 designators and can hence be used with TYPEP.
2841 * fixed bug #333: CHECK-TYPE now ensures that the type error
2842 signalled, if any, has the right object to be accessed by
2843 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2844 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2845 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2847 * fixed bug #334: programmatic addition of slots using specialized
2848 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2849 and :ALLOCATION :CLASS slots.
2850 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2851 float exponents. (rereported by Peter Seibel)
2852 * fixed a bug: #\Space (and other whitespace characters) are no
2853 longer considered to be macro characters in standard syntax by
2854 GET-MACRO-CHARACTER.
2855 * fixed bug: initialization of condition class metaobjects no longer
2856 causes an instance of the condition to be created. (reported by
2858 * fixed bug: it is now possible to have slots such that
2859 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2860 description is neither :INSTANCE nor :CLASS.
2861 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2862 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2863 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2864 non-standard SLOT-DEFINITION-ALLOCATION values.
2865 * fixed bugs: various race conditions handling exiting threads.
2866 CL-PPCRE's thread torture test now passes.
2867 * fixed arguably-a-bug: GC time proportional to number of threads in
2868 system even when most of them are idle
2869 * optimization: improved performance of BIT and SBIT on bit-vectors.
2870 * .fasl file incompatibility: The fasl file version number has
2871 been incremented because of changes associated with package locks.
2873 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2874 * minor incompatible change: the system no longer provides
2875 optimization hints (conditions which are TYPEP
2876 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2877 mode; these hints are still emitted when higher SPEED optimization
2879 * new contrib module: a sampling profiler (profiling by statistical
2880 sampling, rather than by instrumenting functions) is available as
2881 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2882 * the behaviour of the standard function ED is now customizeable by
2883 third parties through a hook variable: see ED's documentation
2884 string for information on the protocol.
2885 * the compiler no longer emits efficiency notes for (FUNCALL X)
2886 when the type of X is uncertain under default optimization
2888 * fixed bug 276: mutating a binding of a specialized parameter to a
2889 method to something that is not TYPEP the specializer is now
2891 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2892 exhibit the required behaviour on the x86 platform. (thanks to
2893 Peter van Eynde, Eric Marsden and Bruno Haible)
2894 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2895 even for difficult arguments. (reported by Peter Graves)
2896 * fixed bug 141a: the backquote printer now descends quoted
2898 * fixed another bug in backquote printing: no more destructive
2899 modification of the form's list structure. (reported by Brian
2901 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2902 move between its address being taken and the call to
2903 interrupt_thread, fixing a crashing race condition.
2904 * the SB-POSIX contrib implementation has been adjusted so that it
2905 no longer exhibits ridiculously poor performance when constructing
2906 instances corresponding to C structs.
2908 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2909 * minor incompatible change: the sb-grovel contrib now treats C
2910 structures as alien (in the sense of SB-ALIEN) objects rather than
2911 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2912 has implications for memory management of client code
2913 (sb-grovel-returned objects must now be manually managed) and for
2914 type safety (alien objects now have full types).
2915 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2916 used to control emission of compiler diagnostics, rather than the
2917 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2918 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2919 quality should be considered deprecated.
2920 * install.sh now installs the user manual as well
2921 * (not quite a new documentable feature, but worth considering in
2922 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2923 beginnings of a semantically meaningful condition hierarchy is
2924 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2926 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2927 designator as the defaults argument.
2928 * fixed bug: Displaced arrays whose displaced-to array has become
2929 too small now cause ARRAY-DIMENSION to signal an error, providing
2930 for safer bounds-checking. (reported by Bruno Haible)
2931 * fixed bug: DEFCLASS slot definitions with identical :READER and
2932 :WRITER names now signal a reasonable error. (reported by Thomas
2934 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2936 * fixed bug: Invalid slot specification errors now print correctly.
2937 (thanks to Zach Beane)
2938 * fixed bug 320: Shared to local slot value transfers in class
2939 redefinitions now happen corrently from superclasses as
2940 well. (reported by Bruno Haible)
2941 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2943 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2944 improper lists correctly. (reported by Bruno Haible)
2945 * fixed bug 313: source-transform for <fun-name> was erroneously
2946 applied to a call of a value of a variable with name <fun-name>.
2947 (reported by Antonio Menezes Leitao)
2948 * fixed bug 307: The obsolete instance protocol ensures that
2949 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2950 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2951 remove dead unknown-values globs from the middle of the stack.
2952 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2953 easier to resume long computations after using *BREAK-ON-SIGNALS*
2954 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2955 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2956 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2957 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2958 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2959 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2961 * fixed a (fairly theoretical) bug in string printing: if
2962 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2963 does not have array-element-type equal to the most general string
2965 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2966 function name. (thanks to Nikodemus Siivola)
2967 * fixed bug: compile-time format string checker failed on
2968 non-closed ~{. (reported by Thomas F Burdick)
2969 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2970 don't warn on legal loop code involving more than one aggregate
2971 boolean. (thanks to Nikodemus Siivola)
2972 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2973 in keyword position to MAKE-PACKAGE was not being reported as
2975 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2976 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2978 * fixed bugs 280 and 312: the checking for multiple definitions in a
2979 file is less likely to become confused by uses of inline
2981 * fixed bug: the #S reader macro performs the keyword coercion
2982 specified for slot names. (reported by Kalle Niemitalo)
2983 * fixed bug: lambda lists may contain symbols whose names start with
2984 & but are not lambda-list-keywords; their occurrence triggers a
2986 * fixed bug 321: define-method-combination argument lambda lists do
2987 not cause invalid code to be generated when &optional or &aux
2988 variables have default values. (reported by Bruno Haible)
2989 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2990 have CLOS classes; this appears also to have fixed reported
2991 instability in stack exhaustion detection.
2992 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2993 MUFFLE-WARNING when no associated restart is present is now
2995 * optimization: rearranged the expansion of various defining macros
2996 so that each expands into only one top-level form in a
2997 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2999 * optimization: used a previously little-used slot in symbols to
3000 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3002 * fixed some bugs revealed by Paul Dietz' test suite:
3003 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3005 ** Fixed an optimization bug related to inheritance of initforms
3006 from local to shared slots.
3007 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3008 ** CAST optimizer forgot to flush argument derived type.
3009 ** print/read consistency on floats is now orders of magnitude
3010 more likely. (thanks also to Bruno Haible for a similar report
3012 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3013 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3014 for objects of type REAL. Make it so.
3015 ** SXHASH is specified (infelicitously) to respect similarity,
3016 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3017 it so. (thanks to Markus Ziegler)
3018 ** on the Alpha, the compiler succeeds in compiling functions
3019 returning a known number of arguments greater than 63.
3020 ** fixed handling of invalid NIL arguments in keyword position
3022 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3024 ** provided a readably-printable representation for RANDOM-STATE
3026 ** ensured that pathnames, where they have a namestring, always
3027 print using #P"..." syntax.
3029 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3030 * Support for the forthcoming 2.0 version of the NetBSD kernel
3031 running on x86 hardware has been added. (thanks to Perry
3032 E. Metzger most immediately, and others for their past work)
3033 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3034 current release version; SBCL's OpenBSD support had been broken
3035 since about the time of OpenBSD's switch to ELF binary format.)
3036 * [placeholder for DX summary]
3037 ** user code with &REST lists declared dynamic-extent, under high
3038 speed or space and low safety and debug optimization policy.
3039 * The manual has been converted to Texinfo format and the debugger
3040 chapter from the cmucl manual has been added.
3041 * A facility has been added to extract documentation strings from
3042 sbcl and store them as Texinfo-formatted snippets for inclusion in
3043 the manual (via Texinfo's @include directive)
3044 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3045 the test case to Dave Roberts)
3046 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3047 pointers. (reported by Sean Ross)
3048 * bug fix: PROFILE output is printed nicely even for large numerical
3049 values. (thanks to Zach Beane)
3050 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3051 greater than 32 handle EOF correctly.
3052 * bug fix: on X86 an immediate argument of the IMUL instruction is
3053 correctly printed in disassembly. (thanks to Lutz Euler)
3054 * bug fix: class slots in redefined classes preserve their old
3055 values. (thanks to Bruno Haible and Nikodemus Siivola)
3056 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3057 succeeds. (reported by Marco Baringer)
3058 * fixed some bugs revealed by Paul Dietz' test suite:
3059 ** READ-SEQUENCE now works on ECHO-STREAMs.
3060 ** RATIONALIZE works more according to its specification. (thanks
3063 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3064 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3065 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3066 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3067 should matter to you only if you rebind the printer control
3068 variables and then find you want different bindings in the
3069 debugger than in the ordinary execution of your program.)
3070 * The runtime build system has been tweaked to support building
3071 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3072 assembler and linker. (thanks to Nikodemus Siivola)
3073 * Unbound, undefined, undeclared variables now trigger full
3074 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3075 more often programmer error than deliberate exploitation of undefined
3077 * optimization: the hash algorithm for strings has changed to one
3078 that is less vulnerable to spurious collisions. (thanks to Juho
3080 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3081 needless bounds checking. (thanks to Juho Snellman)
3082 * optimization: implemented multiplication as a modular
3083 (UNSIGNED-BYTE 32) operation on the PPC backend.
3084 * fixed some bugs revealed by Paul Dietz' test suite:
3085 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3087 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3088 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3089 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3091 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3093 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3095 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3096 their output stream on EOF from read.
3097 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3098 have been read to end-of-file.
3099 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3101 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3102 description of determination of which consecutive characters
3104 ** Printing the "Space" character with escaping on now yields "#\\ ",
3105 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3106 ** Reading floating-point numbers with *READ-BASE* set to a number
3107 less than 10 works correctly.
3108 ** Reading floating-point numbers with *READ-BASE* set to a number
3109 more than 10 works correctly.
3110 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3111 the readtable currently in effect.
3113 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3114 * minor incompatible change: parsing of namestrings on a physical
3115 (Unix) host has changed; numbers after the final #\. in a
3116 namestring are no longer interpreted as a version field. This is
3117 intented to be largely invisible to the user, except that the
3118 meaning of the namestring "*.*.*" has changed: it now refers to a
3119 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3120 should usually be replaced by
3121 (make-pathname :name :wild :type :wild :version :wild)
3122 with the added benefit that this is more likely to be portable.
3123 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3124 option to OPEN now signals an error if the file being opened
3125 exists; this may have an impact on existing code.
3126 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3127 signals received, on the PowerPC platforms (both Linux and
3128 Darwin). (thanks to Pierre Mai for pointing out the location of
3130 * several fixes on OS X: The system now builds and runs cleanly on
3131 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3132 (thanks to Brian Mastenbrook)
3133 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3134 second-resolution: integer multiples of 1/3600 between -24 and 24.
3135 (thanks to Vincent Arkesteijn)
3136 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3137 type when called with 1 argument; PEEK-CHAR checked type of
3138 PEEK-TYPE only after having read first character from a
3139 stream. (reported by Peter Graves)
3140 * bug fix: the garbage collector now has much better locality
3141 behaviour, and in particular no longer treats all memory as being
3142 exhausted when many small objects point to each other in a deeply
3144 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3145 recognized as being TYPEP their class.
3146 * bug fix: the PUSHNEW documentation string has been corrected.
3147 (thanks to Vincent Arkesteijn)
3148 * bug fix: defaulting of the value for the last of an atypically
3149 large number of multiple values being bound was not being
3150 performed correctly on the Alpha or PPC platforms
3151 * optimization: implemented multiplication as a modular
3152 (UNSIGNED-BYTE 32) operation on the x86 backend.
3153 * optimization: SEARCH on simple-base-strings can now be open-coded.
3154 (see also contrib/compiler-extras.lisp for inspiration for
3155 teaching the compiler about the Boyer-Moore algorithm).
3156 * value, returned by MAX (and MIN) called with several EQUALP, but
3157 not EQL, arguments now does not depend on compiler settings.
3158 * fixed some bugs revealed by Paul Dietz' test suite:
3159 ** in stack analysis liveness information is propagated from
3160 non-local entry points.
3161 ** pathwise CAST removing failed when the CAST node did not start
3163 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3164 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3166 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3167 host is already defined.
3168 ** RENAME-FILE works on streams instead of signalling an internal
3170 ** PEEK-CHAR uses the current readtable when determining whether
3171 or not a character is whitespace.
3172 ** MERGE-PATHNAMES handles the case when the pathname does not
3173 specify a name while the default-pathname specifies a version.
3174 ** Pathnames now stand a better chance of respecting print/read
3176 ** Attempting to use standardized file system operators with a
3177 pathname with invalid :DIRECTORY components signals a
3179 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3181 ** DIRECTORY on logical pathnames is more correct.
3182 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3183 signal a TYPE-ERROR if their argument is not a stream.
3184 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3185 designator argument does not designate a stream.
3186 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3187 examining the synonym.
3188 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3190 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3191 element-type larger than ([UN]SIGNED-BYTE 32).
3193 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3194 * When built with the :SB-FUTEX feature, threaded builds now take
3195 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3196 for faster/more reliable mutex and condition variable support.
3197 * Incompatible change (but one you probably shouldn't have been using
3198 anyway): the interface and code for arbitrating between multiple
3199 threads in the same user session has been redesigned.
3200 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3201 error when called without an explicit environment argument.
3202 (thanks to Nikodemus Siivola)
3203 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3204 confused about their position. (thanks to Adam Warner and Gerd
3206 * bug fix: Pretty printing backquoted forms with unquotations in the
3207 argument list position of various code constructs such as LAMBDA
3208 now works correctly. (reported by Paul Dietz)
3209 * bug fix: Pretty printing unquotations no longer loses all
3210 stream position information.
3211 * optimization: performance of string output streams is now less
3212 poor for multiple small sequence writes.
3213 * optimization: performance of CSUBTYPEP in the presence of complex
3214 expressions involving CONS and NOT many times has been improved.
3215 (reported by Paul Dietz)
3216 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3218 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3219 streams for the REPL, for the debugger, and so on. (thanks to
3221 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3222 * fixed some bugs revealed by Paul Dietz' test suite:
3223 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3224 is ignored if it is too small, rather than propagating through
3225 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3226 ** extremely complex negations of CONS types were not being
3227 sufficiently canonicalized, leading to inconsistencies in
3229 ** VALUES tranformer lost derived type.
3231 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3232 * fixed a bootstrapping bug: the build process no longer assumes
3233 that the various BOOLE-related constants have the same value in
3234 host and target lisps. (noted by Paul Dietz' test suite on an
3235 SBCL binary built from CLISP)
3236 * The system can now be dynamically linked on the MIPS platform,
3237 which enables dynamic loading of foreign code from Lisp. (thanks
3238 to Ralf Baechle for discussions on the MIPS ABI)
3239 * The system now records debugging information for its own source
3240 files in a filesystem-position-independent manner, relative to
3241 the "SYS" logical host.
3242 * fixed a compiler bug: MV-LET convertion did not check references
3243 to the "max args" entry point. (reported by Brian Downing)
3244 * tweaked disassembly notes to be less confident about proclaiming
3245 some instruction as an LRA. (thanks to Brian Downing)
3246 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3247 now each have their own history, command character, and other
3248 characteristics. (thanks to David Lichteblau)
3249 * fixed some bugs revealed by Paul Dietz' test suite:
3250 ** compiler failure in compiling LOGAND expressions including a
3252 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3253 shift greater than 32.
3254 ** FLUSH-DEST did not mark blocks for type check regeneration.
3255 ** HANDLER-CASE failed to accept declarations in handler clauses
3256 in some circumstances.
3258 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3259 * New code in contrib/sb-introspect (still probably not entirely
3260 stable yet) provides some support for smart Lisp development
3261 environments like SLIME.
3262 * The conditions signalled for errors occurring when loading .fasl
3263 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3264 in a way which should help ASDF recover gracefully.
3265 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3266 stuff has been cleaned up. If you code contrib/ stuff, this might
3267 affect you, and you can look at contrib/README, contrib/STANDARDS,
3268 and/or the 0.8.4.27 diff to check.
3269 * In full calls the compiler now does not generate checks for declared
3270 argument types for all arguments.
3271 * various threading fixes
3272 ** and some experimental patches which didn't make it into
3273 the main tree for this release, but which are shipped in
3274 contrib/experimental-thread.patch as a possible fix for some
3275 failures (deadlock, spinning...) in GC-intensive multithreaded
3277 * fixed PPC build problem (source code incompatibility of different
3278 library versions): added offsetof() hackery which attempts to divine
3279 where glibc maintainers put uc_mcontext today
3280 * fixed bug 282: compiler does not trust type assertions while passing
3281 arguments to a full call.
3282 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3283 &OPTIONAL VALUES type parameter.
3284 * fix bug 214: algorithm for noting rejected templates is now more
3285 similar to that of template seletion. (also reported by rydis on
3287 * fixed bug 141b: printing backquoted information readably and prettily
3288 inserts a space where necessary.
3289 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3290 (CHARACTER 10) are now reported as errors, rather than propagated
3291 as unknown types. (reported by piso on #lisp)
3292 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3293 with values NIL and :ERROR. (thanks to Milan Zamazal)
3294 * fixed bug 191c: CLOS now does proper keyword argument checking as
3295 described in CLHS 7.6.5 and 7.6.5.1.
3296 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3297 longer raise an error; further, using a list as a for-as-arithmetic
3298 counter now raises a meaningful error.
3299 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3300 now understood by sequence creation functions such as MAKE-SEQUENCE
3302 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3303 a STRING-INPUT-STREAM.
3304 * compiler enhancement: SIGNUM is now better able to derive the type
3306 * type declarations inside WITH-SLOTS are checked. (reported by
3308 * fixed some bugs revealed by Paul Dietz' test suite:
3309 ** incorrect optimization of TRUNCATE for a positive first
3310 argument and negative second.
3311 ** compiler failure in let-convertion during flushing dead code.
3312 ** compiler failure while deriving type of TRUNCATE on an
3313 interval, containing 0.
3314 ** ASH of a negative bignum by a negative bignum count now returns
3316 ** intersection of CONS types now canonicalizes properly, fixing
3317 inconsistencies in SUBTYPEP.
3319 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3320 * incompatible change: The --disable-debugger command line
3321 option now clobbers the debugger at a more fundamental
3322 level, by redefining #'INVOKE-DEBUGGER instead of by
3323 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3324 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3325 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3326 enter the debugger REPL and then suffer recursive errors
3327 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3328 while under the new system, BREAK in --disable-debugger mode
3329 terminates the system just as an unhandled error would.
3330 * fixed compiler performance when processing loops with a step >1;
3331 * bug fix: DOCUMENTATION now retrieves generic function
3332 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3333 support has been systematized, and now supports the methods
3334 specified by ANSI, along with a default method and a method for
3335 slot documentation. (reported by Nathan Froyd)
3336 * bug fix: effective methods associated with a generic function are
3337 no longer cached over a change of that generic function's method
3338 combination. (reported by Andreas Fuchs)
3339 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3340 names a non-existent directory. (thanks to Andreas Fuchs)
3341 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3342 the PPC platform, lead to stack corruption; this has been fixed.
3343 (reported by Rainer Joswig)
3344 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3345 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3346 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3347 arithmetic in general, is now much more reliable on the PPC
3349 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3350 platform now returns the right answer.
3351 * optimization: restored some effective method precomputation in
3352 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3353 precomputation is now tunable.
3354 * optimization: compiler-internal data structure use has been
3355 reviewed, and changes have been made that should improve the
3356 performance of the compiler by about 20%.
3357 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3358 simple-base-strings and simple-bit-vectors is improved.
3359 * optimization: the optimization of 32-bit logical and arithmetic
3360 functions introduced in version 0.8.3 on the x86 has been
3361 implemented on the mips, ppc and sparc platforms; an
3362 implementation of the same facility, but for 64-bit arithmetic,
3363 has been added for the alpha.
3364 * microoptimization: the compiler is better able to make use of the
3365 x86 LEA instruction for multiplication by constants.
3366 * bug fix: in some situations compiler did not report usage of
3367 generic arithmetic in (SPEED 3) policy.
3368 * bug 145b fix: compiler used wrong type specifier while converting
3369 MEMBER-types to numeric.
3370 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3372 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3373 index argument now works properly on the Alpha platform.
3374 * bug fix: floating point exception treatment on the Alpha platform
3376 * bug fix: FILE-POSITION works much better on string input and
3377 output streams. (thanks to Nikodemus Siivola)
3378 * bug fix: many threading/garbage collection symptoms sorted.
3379 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3380 might be pseudo-atomic.
3381 * internal change: Stopping for GC is now done with signals not
3382 ptrace. GC is now done in whichever thread wanted it, instead of
3384 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3386 * bug fix: result form in DO is not contained in the implicit
3388 * incompatible change: ICR structure is changed; the value part of
3389 CONTINUATION is now called LVAR; corresponding functions are
3390 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3391 * added type deriver for ISQRT (thanks to Robert E. Brown).
3392 * bug fix: better support for loading from the command line when an
3393 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3395 * fixed some bugs revealed by Paul Dietz' test suite:
3396 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3397 ** ROUND and FROUND now give the right answer when given very
3398 small float arguments.
3399 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3401 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3402 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3403 ** LCM should return a non-negative integer.
3404 ** PARSE-INTEGER returned the index of a terminator instead of the
3405 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3406 ** PARSE-INTEGER returned an incorrect index being applied to a
3408 ** LCM with two arguments of 0 returns 0 rather than signalling
3410 ** unsigned addition of a 32-bit constant with the high bit set no
3411 longer causes an internal compiler error on the x86.
3412 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3413 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3414 with negative last argument.
3415 ** byte specifiers with zero size and position no longer cause
3416 an error during type derivation.
3417 ** bignum multiplication on the Alpha platform now returns the
3419 * porting: The system now builds on SuSE AMD64, although it still
3420 generates a 32-bit binary.
3421 * .fasl file incompatibility: The fasl file version number has
3422 been incremented (because of the changes to internal compiler
3423 data structures referred to above).
3425 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3426 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3427 more accurately, on the Darwin kernel running on PowerPC hardware.
3428 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3429 * Compiler code deletion notes now signal a condition of type
3430 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3431 an associated MUFFLE-WARNING restart.
3432 * The compiler now performs limited argument count validation of
3433 constant format strings in FORMAT, and where appropriate in ERROR,
3434 CERROR and WARN. (thanks to Gerd Moellmann)
3435 * New ASDF-INSTALL contrib can be used for automatic download and
3436 installation of third-party Lisp code from CCLAN or other sites
3438 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3439 which forces another thread to execute a function supplied by the
3441 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3442 now accept and act upon their :ELEMENT-TYPE keyword argument.
3443 (reported by Martin Atzmueller, Edi Weitz)
3444 * bug fix: FILE-POSITION now accepts position designators up to
3445 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3446 is the greater. (thanks to Patrik Nordebo)
3447 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3448 Kalle Olavi Niemitalo)
3449 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3450 printable. (reported by Eric Marsden)
3451 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3452 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3453 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3454 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3455 (thanks to Stig Sandoe)
3456 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3457 UNREAD-CHAR now correctly includes the unread character in the
3458 target sequence. (thanks to Gerd Moellmann)
3459 * bug fix in threaded builds: the system can now be suspended and
3460 resumed by shell job control with minimal disruption.
3461 * bug fixes in times and timezones >2038AD
3462 * better handling of "where is GNU make?" problem in build scripts
3463 (thanks to Nikodemus Siivola)
3464 * new optimization: inside a named function any reference to a
3465 function with the same name is considered to be a self-reference;
3466 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3467 optimization quality.
3468 * new optimization on x86: logical functions and + now have
3469 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3470 used when the result is truncated to 32 bits.
3471 * VALUES declaration is partially enabled.
3472 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3473 * fixed some bugs revealed by Paul Dietz' test suite:
3474 ** The system now obeys the constraint imposed by
3475 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3476 types form a lattice under type intersection.
3477 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3478 ** ASSOC now ignores NIL elements in an alist.
3479 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3480 and (1+ MOST-POSITIVE-FIXNUM) answers.
3481 ** The addition of a method with invalid qualifiers to a generic
3482 function does not cause an error to be signalled immediately;
3483 a warning is signalled, and the error is generated only on
3484 calling the generic function.
3485 * changed .fasl file version number, in part to add type codes for
3486 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3487 obscure ANSI requirements
3489 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3490 * fixed bug 148: failure to inline-expand a local function left
3491 garbage, confusing the compiler.
3492 * fixed bugs 3cd: structure slot readers perform type check if the
3493 slot can have an invalid value (i.e. it is either not initialized
3494 or can be written with a less specific slot writer).
3495 * bug fix: the compiler now traps array references to elements off
3496 the end of an array; previously, the bounds checking in some
3497 circumstances could go off-by-one.
3498 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3500 * type declarations for array element types now obey the description
3501 on the CLHS page "Declaration TYPE", as per discussions on
3502 sbcl-help around 2003-05-08. This means that a declaration
3503 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3504 declaration, all references to BAR will be asserted or assumed
3505 (with THE, so dependent on compiler policy) to involve objects of
3506 type FOO. Note that no such declaration is implied in
3507 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3508 * declared types of functions from the "Conditions"
3509 chapter. (reported by Paul Dietz)
3510 * bug fix: CERROR accepts a function as its first argument.
3511 * bug fix: NTH an NTHCDR accept a bignum as index
3512 arguments. (reported by Adam Warner)
3513 * optimization: character compare routines now optimize comparing
3514 against a constant character. (reported by Gilbert Baumann)
3515 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3516 argument now works properly on the MIPS platform.
3517 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3518 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3519 declared to have a functional type, does not cause an error
3521 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3522 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3523 * fixed bug: if last continuation of a deleted block has a
3524 destination, this destination should be deleted too. (reported by
3526 * fixed a bug in the bootstrap process: the host compiler's values
3527 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3528 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3529 test case from Patrik Nordebo)
3530 * improved the ability of the disassembler on the PPC platform to
3531 provide helpful disassembly notes.
3532 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3533 the class in more cases than previously.
3534 * bug fix: FILE-POSITION now understands :START and :END for
3535 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3536 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3537 8) data. (thanks to David Lichteblau)
3538 * bug fix: it is possible to add a method to a generic function
3539 without lambda list.
3540 * bug fix: reader failed to signal END-OF-FILE inside an
3541 object representation. (reported by Nikodemus Siivola)
3542 * fixed some bugs revealed by Paul Dietz' test suite:
3543 ** LAST and [N]BUTLAST should accept a bignum.
3544 ** condition slot accessors are methods.
3545 ** (VECTOR NIL) is a subtype of STRING.
3547 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3548 * minor incompatible change: some nonsensical specialized lambda
3549 lists (used in DEFMETHOD) which were previously ignored now signal
3551 * minor incompatible change: the system is now aware of the types of
3552 variables in the COMMON-LISP package, and will signal errors for
3553 most violations of these type constraints (where previously they
3554 were silently accepted).
3555 * minor incompatible change: COMPILE-FILE now uses the freedom
3556 afforded (ANSI 3.2.2.3) to use derived function types for
3557 functions defined in the same file. This also permits the system
3558 to warn on static type mismatches and function
3559 redefinition. (Currently it does not work with high DEBUG level.)
3560 * minor incompatible change: VALUES declaration is disabled.
3561 * When issuing notes, the compiler now signals a condition of type
3562 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3563 restart for use in user handlers. It is expected that the
3564 COMPILER-NOTE condition will eventually become a condition
3565 supertype to a hierarchy of note types, which will then be
3566 handleable in a similar fashion. However, at the moment, no such
3567 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3568 but it's an implementation detail, not a classification for the
3570 * Changes in type checking closed the following bugs:
3571 ** type checking of unused values (192b, 194d, 203);
3572 ** template selection based on unsafe type assertions (192c, 236);
3573 ** type checking in branches (194bc).
3574 * A short form of VALUES type specifier has ANSI meaning (it has
3575 increased the number of situations when SBCL cannot perform type
3577 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3578 keywords or constants is permissible.
3579 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3580 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3581 classes. (thanks to Antonio Martinez)
3582 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3583 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3584 argument to a pretty-print stream. Instead, it leaves any such
3585 operations to DESCRIBE-OBJECT methods.
3586 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3588 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3589 lambda lists. (thanks to David Lichteblau)
3590 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3591 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3592 (thanks to Gerd Moellmann)
3593 * fixed bug 246: increased compilation speed of long
3594 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3596 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3598 * DEFCONSTANT now throws a condition of type
3599 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3600 constant to a non-EQL value; CONTINUE and ABORT restarts
3601 respectively change and preserve the value.
3602 * fixed bug 63: The code walker, part of the implementation of CLOS,
3603 is now better at handling symbol macros.
3604 * bug fix: There is no longer an internal implementation type named
3605 CL:LENGTH. (reported by Raymond Toy)
3606 * bug fix: In macro-like defining macros/special operators the
3607 implicit block does not enclose the lambda list.
3608 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3609 enclosed in parentheses) are not suitable as type specifiers, and
3610 their use properly signals an error now.
3611 * bug fix: An argument count mismatch for a type specifier in code
3612 being compiled no longer causes an unhandled error at compile
3613 time, but signals a compile-time warning.
3614 * fixed simple vector readable printing
3615 * bug fix: DESCRIBE takes more care over whether the class
3616 precedence list slot of a class is bound before accessing it.
3617 (reported by Markus Krummenacker)
3618 * bug fix: FORMATTER can successfully compile pretty-printer format
3619 strings which use variants of the ~* directive inside.
3620 * bug fix: SEARCH now applies its TEST predicate to the elements of
3621 the arguments in the correct order. (thanks to Wolfhard Buss)
3622 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3623 in type inference. (thanks to Robert E. Brown)
3624 * bug fix: Reading in symbols with an explicit package name of ""
3625 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3626 * fixed some bugs revealed by Paul Dietz' test suite:
3627 ** NIL is now allowed as a structure slot name.
3628 ** Arbitrary numbers, not just REALs, are allowed in certain
3629 circumstances in LOOP for-as-arithmetic clauses.
3630 ** Multiple class redefinitions before slot access no longer
3631 causes a type error.
3632 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3633 association between the name and a class.
3634 ** Generic functions with non-standard method-combination and over
3635 five methods all of which return constants no longer return NIL
3636 after the first few invocations. (thanks to Gerd Moellmann)
3637 ** CALL-NEXT-METHOD with no arguments now passes the original
3638 values of the arguments, even in the presence of assignment.
3639 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3641 ** DISASSEMBLE works with closures and funcallable instances.
3642 ** ADD-METHOD now returns the generic function, not the new method.
3643 ** FIND-METHOD signals an error if the lengths of the specializers
3644 is incompatible with the generic function, even if the ERRORP
3646 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3647 which its argument is a member.
3648 ** DEFCLASS only redefines the class named by its class-name
3649 argument if that name is the proper name of the class;
3650 otherwise, it creates a new class.
3651 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3652 of the UNBOUND-SLOT condition to the name of the slot.
3653 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3654 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3655 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3656 SLOT-MAKUNBOUND in the specified fashion.
3658 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3659 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3660 cross-compilation host. As a consequence, we can now bootstrap our
3661 way up to SBCL starting with a bare gcc toolchain and human-readable
3662 source code (first the source to CLISP, then the source to SBCL).
3663 * A contributed module containing a partial implementation of the
3664 simple-streams interface has been included. (thanks to Rudi
3666 * A contributed module implementing the RFC1321 Message Digest
3667 Algorithm, known as MD5, has been included.
3668 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3669 no longer has any effect, as the code controlled by this feature
3670 has been deleted. (As far as we know, no-one has ever built using
3671 this feature, and its semantics were confused in any case).
3672 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3673 work on conditions (as required by the ANSI specification),
3674 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3675 expected behaviour on conditions. Users should note, however,
3676 that such behaviour is not required by the ANSI specification,
3677 and so use of this behaviour may render their code unportable.
3678 * fixed some bugs revealed by Paul Dietz' test suite:
3679 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3681 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3682 ** SXHASH on condition objects no longer returns NIL.
3683 ** :ALLOCATION :CLASS slots are better treated; their values are
3684 updated on class redefinition, and initforms inherited from
3685 superclasses are applied.
3686 ** REMOVE-METHOD returns its generic function argument even when
3687 no method was removed.
3688 ** SHARED-INITIALIZE now initializes the values of the requested
3689 slots, including those with :ALLOCATION :CLASS.
3690 ** ALLOCATE-INSTANCE now works on structure classes defined via
3691 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3693 ** SLOT-EXISTS-P now works on conditions, as well as structures
3695 ** MAKE-LOAD-FORM now has the required methods on
3696 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3697 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3698 keyword, and now implements the SLOT-NAMES argument.
3699 ** methods with &OPTIONAL arguments no longer allow too many
3700 arguments to be passed in the call without error.
3701 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3702 option is consistent with the required arguments of the generic
3703 function lambda list.
3704 * bug fix: REQUIRE accepts a string designator. (Thanks to
3706 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3707 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3708 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3709 * bug fix: The compiler now checks for duplicated variables in macro
3711 * bug fix: SETQ on globals returns the correct value.
3712 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3713 not a COMPILER-ERROR (followed by some other strange error on
3714 choosing the CONTINUE restart).
3715 * bug fix: make.sh and friends are now more consistent in the way that
3716 they look for GNU "make".
3718 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3719 * experimental native threads support (on x86 Linux >=2.4 only).
3720 This is not compiled in by default: you need to add :SB-THREAD to
3721 the target features. See the "Beyond ANSI" chapter of the manual
3723 * fix for longstanding nonANSIism: The old distinction between
3724 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3725 The return value from CL:FIND-CLASS is now a CLOS class, and
3726 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3727 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3728 * An interface to the MetaObject Protocol, as described in Kiczales,
3729 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3730 MIT Press, 1991, is available from the SB-MOP package.
3731 * incompatible change: the SB-PCL package should now be considered
3732 a private implementation detail, and no longer a semi-private MOP
3734 * minor incompatible change: due to rearrangement for threads, the
3735 control stack and binding stack are now allocated at arbitrary
3736 addresses instead of being hardcoded per-port. Users affected by
3737 this probably have to be doing advanced things with shared
3738 libraries, and will know who they are.
3739 * minor incompatible change: Previously, all --eval forms used were
3740 processed with READ before any of them were processed with EVAL.
3741 Now each --eval form is processed with both READ and EVAL before
3742 the next --eval form is processed. (Thus package operations like
3743 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3744 work as the user might reasonably expect.)
3745 * minor incompatible change: *STANDARD-INPUT* is now only an
3746 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3748 * minor incompatible change: Y-OR-N-P is now character-oriented,
3749 not line oriented. Also, YES-OR-NO-P now works without errors.
3750 (thanks to Antonio Martinez)
3751 * sb-aclrepl module improvements: an integrated inspector, added
3752 repl features, and a bug fix to :trace command.
3753 * Known functions, which cannot be open coded by the backend, are
3754 considered to be able to check types of their arguments. (fixing
3755 a bug report by Nathan J. Froyd)
3756 * fixed a bug in computing method discriminating functions: It is
3757 now possible to define methods specialized on classes which have
3758 forward-referenced superclasses. (thanks to Gerd Moellmann)
3759 * fixed evaluation order in optional entries (reported by Gilbert
3761 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3762 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3763 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3764 required-by-AMOP NAME argument, as well as CLASS and
3765 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3766 * fixed bug 20: DEFMETHOD can define methods using names that are
3767 not the proper names of classes to designate class specializers.
3768 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3769 Unix file descriptors, instead of blowing up. (thanks to Antonio
3771 * Garbage collection refactoring: user-visible change is that a
3772 call to the GC function during WITHOUT-GCING will not do garbage
3773 collection until the end of the WITHOUT-GCING. If you were doing
3774 this you were probably losing anyway.
3775 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3776 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3777 TYPEP the latter but not the former.
3778 * The compiler issues a full WARNING for calls to undefined functions
3779 with names from the CL package.
3780 * MAP-INTO for a vector destination is open coded. (reported by
3781 Brian Downing on c.l.l)
3782 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3783 documentation string.
3784 * fixed some bugs revealed by Paul Dietz' test suite:
3785 ** COPY-ALIST now signals an error if its argument is a dotted
3787 ** Condition slots are now accessed more correctly in the presence
3788 of multiple initargs for a given slot.
3789 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3790 exclude restarts of the same name associated with a different
3792 ** DEFCLASS of forward-referenced classes with another
3793 forward-referenced class in the superclasses list no longer
3795 ** Condition slots are now initialized once each, not multiple
3796 times. (thanks to Gerd Moellmann)
3797 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3799 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3800 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3801 arguments contain duplicated elements.
3802 ** RESTART-CASE understands local macros.
3803 ** RESTART-CASE associates exactly its own restarts with a condition.
3804 ** ENDP in safe mode checks its argument to be of type LIST.
3805 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3806 in question is unbound.
3807 ** Optimized MAKE-INSTANCE functions no longer cause internal
3808 assertion failures in the presence of duplicate initargs.
3809 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3810 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3811 propagated even in the ctor optimized implementation of
3813 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3815 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3816 * a better implementation of SXHASH on (simple) bit vectors,
3817 measured both in execution speed and in distribution of results
3818 over the positive fixnums, has been installed. Likewise, a better
3819 implementation of EQUAL for simple bit vectors is now available.
3820 * fixed CEILING optimization for a divisor of form 2^k.
3821 * fixed bug 240 (emitting extra style warnings "using the lexical
3822 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3823 by Antonio Martinez)
3824 * fixed SXHASH, giving different results for NIL depending on type
3825 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3826 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3827 variable. (found by Rolf Wester)
3828 * SBCL does not ignore type declarations for special
3829 variables. (reported by rif on c.l.l 2003-03-05)
3830 * some bug fixes in contrib/sb-aclrepl/
3831 * fixed some bugs revealed by Paul Dietz' test suite:
3832 ** a bug in the CONS type specifier, whereby the CAR and CDR
3833 types got intertwined, has been fixed;
3834 ** the type system is now able to reason about the interaction
3835 between INTEGER and RATIO types more completely;
3836 ** APPEND, [N]REVERSE and NRECONC check that those their
3837 arguments, which must be proper lists, are really so;
3838 ** An array specialized to be unable to hold elements has been
3839 implemented, as required -- yes, really -- by ANSI;
3840 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3841 on malformed property lists;
3843 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3844 * incompatible packaging change: in line with Unix convention,
3845 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3846 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3847 * REQUIRE and PROVIDE are now optionally capable of doing something
3848 useful. See the documentation string for REQUIRE.
3849 * infrastructure for a managed SBCL contrib system: contributed
3850 modules in this release include:
3851 ** the ASDF system definition facility;
3852 ** an interface to the BSD Sockets API;
3853 ** an ACL-like convenience interface to the repl;
3854 (thanks to Kevin Rosenberg)
3855 ** an implementation of ROTATE-BYTE, with efficient implementation
3857 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3858 gives a closer approximation to the right answer than previously.
3859 (thanks to Raymond Toy)
3860 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3861 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3862 optional environment arguments, as required by ANSI.
3863 * fixed bugs in other functions taking environment objects, allowing
3864 calls with an explicit NIL environment argument to be compiled
3866 * fixed bug 228: primary return values from
3867 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3868 COMPILE or FUNCTION.
3869 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3870 :TYPE will no longer signal errors on innocuous objects.
3871 * fixed bug 231b: SETQ is better at respecting type declarations in
3872 the lexical environment.
3873 * fixed a bug in DEFCLASS: classes named by symbols with no or
3874 unprintable packages can now be defined.
3875 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3876 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3877 * fixed compiler failure related to checking types of functions.
3878 (reported by Robert E. Brown)
3879 * the compiler is now much more consistent in its error-checking
3880 treatment of bounding index arguments to sequence functions: in
3881 (SAFETY 3) code, errors will be signalled in almost all cases if
3882 invalid sequence bounding indices are passed to functions defined
3883 by ANSI to operate on sequences.
3884 * fixed a bug in the build procedure: documentation of SBCL-specific
3885 packages is now preserved and available in the final Lisp image.
3886 * lifted FDEFINITION lookup out of loops in the implementation of
3887 many list operations. (thanks to Robert E. Brown)
3888 * fixed a bug in the reader: the #n# reader macro now works for
3889 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3890 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3891 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3892 E. Brown and Tony Martinez respectively)
3893 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3894 SLOT-BOUNDP: in particular, it is now able to optimize them much
3895 better, and is now not vulnerable to having packages renamed.
3896 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3897 always called when a slot is not present in an instance. (thanks
3899 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3900 longer signal an error on unreading a character following EOF on
3901 the previous constituent stream. (thanks to Tony Martinez)
3902 * fixed some bugs revealed by Paul Dietz' test suite:
3903 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3904 not just nonnegative fixnums;
3905 ** the logical bit-array operators such as BIT-AND now accept an
3906 explicit NIL for their "opt-arg" argument (to indicate a
3907 freshly-consed result bit-array);
3908 ** ELT now signals an error on an invalid sequence index in safe
3910 ** the type system is now cleverer about negations of numeric
3911 types, and consequently understands the BIGNUM and RATIO types
3913 ** the type system is now cleverer about the interaction between
3914 INTEGER and RATIO types: while bugs still remain, many more
3915 cases are accurately computed;
3916 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3917 if it is in the last clause;
3918 ** CONSTANTLY now correctly returns a side-effect-free function in
3920 ** DECLARE is no longer treated as a special-operator; in
3921 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3922 * incremented fasl file version number due to the change in the
3923 DEFSTRUCT-SLOT-DESCRIPTION structure.
3925 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3926 * minor incompatible change: code processed by the "interpreter" or
3927 EVAL now has a compilation optimization policy of (DEBUG 2)
3928 (changed from (DEBUG 1)) to improve debuggability of interactive
3929 development, and to allow the use of the debug RETURN command in
3931 * an experimental implementation of the RETURN command for the
3932 debugger has been included. (thanks to Frederik Kuivinen)
3933 * fixed bug 62: constraints were not propagated into a loop.
3934 * fixed bug in embedded calls of SORT (reported and investigated by
3936 * fixed some bugs revealed by Paul Dietz' test suite:
3937 ** printing and reading of arrays with some dimensions having
3938 length 0 (thanks to Gerd Moellmann);
3939 ** BOA constructor with &AUX argument without a default value does
3940 not cause a type error;
3941 ** CONSTANTP now returns true for all self-evaluating objects.
3943 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3944 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3945 accessors that are related by inheritance, as specified in the
3946 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3947 Valtteri Vuorikoski)
3948 * The compiler is now able to inline functions that were defined in
3949 a complex lexical environment (e.g. inside a MACROLET).
3950 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3952 * Support for the upcoming FreeBSD-5.0 release has been included.
3953 (thanks to Dag-Erling Smorgrav)
3954 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3955 effect when it is not in a toplevel context.
3956 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3957 stand a better chance of being correct. (thanks to Gerd
3959 * fixed bug in COERCE, which now signals an error on coercing a
3960 rational to a bounded real type which excludes the expected
3962 * The compiler is now able to derive types more accurately from the
3963 COERCE and COMPILE functions.
3964 * fixed bug 223: functional binding is considered to be constant
3965 only for symbols in the CL package.
3966 * fixed bug 231: SETQ did not check the type of a variable being set
3967 (reported by Robert E. Brown)
3968 * A new optimization for MAKE-INSTANCE has been included, fixing
3969 various bugs (including relating to :ALLOCATION :CLASS slots and
3970 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3972 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3973 ** As required by ANSI, LOOP now disallows anonymous collection
3974 clauses such as COLLECT I in conjunction with aggregate boolean
3975 clauses such as THEREIS (= I 1);
3976 ** LOOP now signals an error when any variable is reused in the
3977 same loop (including the potentially useful construct analogous
3978 to WITH A = 1 WITH A = (1+ A);
3979 ** IT is only a special loop symbol within the first clause of a
3980 conditional loop clause;
3981 ** LOOP with a typed iteration variable over a hashtable now
3982 signals a type error iff it should.
3983 * fixed some other bugs revealed by Paul Dietz' test suite:
3984 ** FILE-STREAM now names the class previously known as FD-STREAM;
3985 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3986 argument) no longer signals an error;
3987 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3988 of the slot symbol, rather than using the current package
3989 ((:CONC-NAME "") continues to intern the slot's name in the
3991 * incremented fasl file version number, because of the incompatible
3992 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3993 of the new implementation of DEFINE-COMPILER-MACRO.
3995 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3996 * Support for building SBCL for MIPS platforms running in
3997 little-endian mode has now been checked in, and basic
3998 functionality on said platforms verified.
3999 * minor incompatible change: PCL now records the pathname of a file
4000 in which methods and the like are defined, rather than its
4002 * minor incompatible change: TRUENAME now considers the truename of
4003 a file naming a directory to be the pathname with :DIRECTORY
4004 component indicating that directory.
4005 * minor incompatible change: a NAMED clause in the extended form of
4006 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4007 reason for the previous behaviour is unclear.
4008 * more systematization and improvement of CLOS and MOP conformance
4009 in PCL (thanks to Gerd Moellman and Pierre Mai):
4010 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4012 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4013 primary methods with no specializers;
4014 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4016 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4017 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4018 FORWARD-REFERENCED-CLASSes; error reporting on
4019 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4021 ** SXHASH on CLOS instances now uses a slot internal to the
4022 instance to return different numbers on distinct instances,
4023 while preserving the same return value through invocations of
4025 ** DEFMETHOD signals errors when methods with longer incongruent
4026 lambda lists are added to generic functions;
4027 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4028 CLASS, as specified in AMOP;
4029 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4030 on the order returned by the primary method for classes of
4031 class STANDARD-CLASS;
4032 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4033 * fixed some bugs shown by Paul Dietz' test suite:
4034 ** DOLIST puts its body in TAGBODY;
4035 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4037 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4038 value producing form;
4039 ** if more variables are given to PROGV than values, extra
4040 variables are bound and made to have no value;
4041 ** NSUBSTITUTE on list arguments gets the right answer with
4043 ** ELT signals an error of type TYPE-ERROR when the index argument
4044 is not a valid sequence index;
4045 ** LOOP signals (at macroexpansion time) an error of type
4046 PROGRAM-ERROR when duplicate variable names are found;
4047 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4048 ** FUNCALL of special-operators now cause an error of type
4050 ** PSETQ now works as required in the presence of side-effecting
4051 symbol-macro places;
4052 ** NCONC accepts any object as its last argument;
4053 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4055 ** loop-for-as-package does not require a package to be explicitely
4057 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4059 * fixed bug 166: compiler preserves "there is a way to go"
4060 invariant when deleting code.
4061 * fixed bug 172: macro lambda lists with required arguments after
4062 &REST arguments now cause an error to be signalled. (thanks to
4064 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4065 bug. (thanks to Matthew Danish)
4066 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4068 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4069 arguments are lexically rebound. (thanks to Gerd Moellmann and
4071 * fixed bug 194: error messages are now more informative when there
4072 is no primary method applicable in a call to a generic
4073 function. (thanks to Gerd Moellmann)
4074 * fixed bug in command line argument checking (thanks to Julian
4076 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4077 (thanks to Matthew Danish)
4078 * incremented fasl file version number, because of the
4079 SXHASH-related changes in the layout of CLOS data structures
4081 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4082 * minor incompatible change: The runtime (the Unix executable named
4083 "sbcl") is now much pickier about the .core files it will load.
4084 Essentially it now requires .core files to descend from the same
4085 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4086 as the runtime does. (The intent is to prevent the crashes which
4087 can occur, and which can even be reported as mysterious failures,
4088 when people patch the sources or change the build parameters
4089 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4090 sbcl and .core files.)
4091 * fixed bug: VALUES-LIST is no longer optimized away.
4092 * fixed bug 142: The FFI conversion of C string values to Lisp
4093 string values no longer conses excessively. (thanks to Nathan
4094 Froyd porting Raymond Toy's fix to CMU CL)
4095 * began to systematize and improve MOP conformance in PCL (thanks to
4096 Nathan Froyd, Gerd Moellman and Pierre Mai):
4097 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4099 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4100 ** FINALIZE-INHERITANCE is now called on class finalization;
4101 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4102 argument precedence order.
4103 * fixed bug 202: The compiler no longer fails on functions whose
4104 derived types contradict their declared type.
4105 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4106 so it can be non-toplevel.
4107 * The fasl file version number has changed (because of the new
4108 implementation of DEFMACRO).
4109 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4110 safe code, that any length requirement by their type-specifier
4111 argument is valid. The exceptions to this are described in bug
4113 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4114 functions now check the types of their inputs as required by ANSI.
4115 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4116 introduced symbol is DECLAREd to be SPECIAL.
4117 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4118 * fixed bug: :COUNT argument to sequence functions may be negative
4119 * fixed bug: body of DO-SYMBOLS may contain declarations
4120 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4121 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4122 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4123 symbol macro only once
4124 * fixed printing of call frame when argument list is unavailable
4125 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4126 * compiler no longer signals WARNING on unknown keyword
4129 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4130 * A beta-quality port to the mips architecture running Linux,
4131 based on the old CMUCL backend, has been made. It has been tested
4132 on a big-endian kernel, and works sufficiently well to be able to
4133 rebuild itself; it has not been tested in little-endian mode.
4134 * fixed an inconsistency between gencgc.c and purify.c which made
4135 dumping/loading .core files unreliable
4136 * fixed bug 120a: The compiler now deals correctly with IFs where
4137 the consequent is the same as the alternative, instead of
4138 misderiving the return type. (thanks to Alexey Dejneka)
4139 * fixed bug 113: Logical pathnames are now dumpable (the logical
4140 host is resolved at load-time, throwing an error if it is not
4142 * fixed bug 174: FORMAT's error message is slightly clearer when a
4143 non-printing character is used in a format directive.
4144 * fixed several bugs in compiler checking of type declarations, i.e.
4145 violations of the Python "declarations are assertions" principle
4146 (thanks to Alexey Dejneka)
4147 * fixed several bugs in PCL's error checking (thanks to Gerd
4149 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4151 * fixed bug in compilation of functions as first class values
4152 (thanks to Antonio Martinez-Shotton)
4153 * The compiler's handling TYPE-ERRORs which it can prove will
4154 inevitably happen at runtime has been cleaned up and corrected
4155 in several ways. (thanks to Alexey Dejneka)
4156 * improved argument type checking for various basic arithmetic
4157 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4158 lavished on them in the past that they can be compiled in many
4159 ways in different special cases
4160 * fixed bug 181: compiler checks validity of user supplied type
4162 * cleaned up code flushing in optimization: Function calls which
4163 should signal errors for safety purposes (e.g. which ANSI says
4164 should signal errors when their arguments are of incorrect type)
4165 are no longer optimized away.
4166 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4167 * incremented fasl file version number, because changes in the
4168 implementation of sequence functions like COERCE caused
4169 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4170 in old inline expansions) to become undefined. (Actually these
4171 changes were later undone, so we might very well be binary
4172 compatible with 0.7.7 after all, but leaving the version number
4173 incremented seemed like the simplest and most conservative
4176 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4177 * An alpha-quality port to the parisc architecture running Linux,
4178 based on the old CMUCL backend, has been made. This, even more so
4179 than the other backends, should be considered still a work in
4180 progress; known problems include that the Linux kernel in 64-bit
4181 mode does not propagate the correct sigcontext structure to
4182 userspace, and consequently SBCL on a parisc64 kernel will not
4184 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4185 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4186 suppressed.) Also now that the compiler is looking at declarations
4187 in the environment, it checks optimization declarations as well,
4188 and suppresses inlining when (> DEBUG SPEED).
4189 * More fixes have been made to treatment of floating point exception
4190 treatment and other Unix signals. In particular, floating point
4191 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4192 * The detection and handling of control stack exhaustion (infinite
4193 or very deeply nested recursion) has changed. Stack exhaustion
4194 detection is now done by write-protecting pages at the OS level
4195 and applies at all optimization settings; when found, a
4196 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4197 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4198 be caught using IGNORE-ERRORS.
4199 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4200 correctly when transforming recursive LABELS functions to LETs.
4201 (thanks to Alexey Dejneka)
4202 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4203 that are names of constants or global variables.
4204 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4205 alien routines with docstrings.
4206 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4207 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4209 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4210 (thanks to Eric Marsden)
4211 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4212 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4213 * Bug fix: The SPARC backend can now compile functions involving
4214 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4215 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4216 to a functions expecting a PATHNAME-DESIGNATOR.
4217 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4218 lambda lists. (thanks to Alexey Dejneka)
4219 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4220 functions so that EXPORTing the name of the class doesn't cause
4221 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4222 to Antonio Martinez for reporting this)
4223 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4224 constant-folded without failing an assertion. (thanks to Einar
4225 Floystad Dorum for reporting this)
4226 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4227 types are now dealt with more correctly by the compiler.
4228 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4229 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4230 behaviour analogous to RENAME-FILE. This puts its behaviour more
4231 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4233 * The fasl file version number has changed again. (because of the
4234 bug fix involving the names of PCL MAKE-INSTANCE functions)
4236 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4237 * bug fix: Floating point exceptions are treated much more
4238 consistently on the x86/Linux and PPC/Linux platforms.
4239 * Array initialization with :INITIAL-ELEMENT is now much faster for
4240 cases when the compiler cannot open code the array creation, but
4241 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4242 array accesses have also seen a speed increase.
4243 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4244 specified. (This was at the root of some bad interactions between
4245 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4247 * bug fix: Internal error arguments for undefined functions are now
4248 computed correctly on the PPC/Linux platform.
4249 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4250 Raymond Toy's patch for CMU CL)
4251 * Support for the Solaris 9 operating environment has been included
4252 (thanks to Daniel Merritt)
4253 * A very ugly but hopefully complete draft of the missing FFI chapter
4254 of the manual has been created by reformatting the corresponding
4255 CMU CL manual chapter into (currently very ugly and incoherent)
4256 DocBook and bringing it up to date for SBCL behavior. Thus, the
4257 manual is now essentially complete, at least by my extreme
4258 once-and-only-once standards, whereby it's acceptable to refer to
4259 the doc strings of SB-EXT functions as the primary documentation.
4260 * The fasl file version number has changed again, due to cleanup of
4261 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4262 is no longer a static symbol.)
4264 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4265 * SBCL now builds with OpenMCL (version 0.12) as the
4266 cross-compilation host; also, more progress has been made toward
4267 bootstrapping under CLISP.
4268 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4270 * bug 158 fixed: The compiler can now deal with integer loop
4271 increments different from 1; fixing this turned out also to fix
4273 * bug 169 fixed: no more bogus warnings about using lexical bindings
4274 despite the presence of perfectly good SPECIAL declarations (thanks
4275 to David Lichteblau)
4276 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4277 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4278 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4280 * bug 180 fixed: Method combination specifications no longer ignore
4281 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4282 * bug fix: Structure type predicate functions now check their argument
4283 count as they should.
4284 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4285 correctly. (thanks to Pierre Mai)
4286 * minor incompatible change: The --noprogrammer option is deprecated
4287 in favor of the new --disable-debugger option, which is very similar.
4288 (The major difference is that it takes effect at a slightly different
4289 time at startup, causing handling of errors in --sysinit and
4290 --userinit files will be affected differently.) The
4291 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4292 been added to allow this functionality to be controlled from ordinary
4293 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4294 maintainers, who might want to run non-interactive scripts to
4295 build SBCL cores which will later be used interactively.)
4296 * minor incompatible change: The LOAD function no longer, when given
4297 a wild pathname to load, loads all files matching that pathname.
4298 Instead, an error of type FILE-ERROR is signalled.
4300 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4301 * bug 147 fixed: The compiler preserves its block link/count
4302 invariants more correctly now so that it doesn't crash. (thanks
4304 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4306 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4307 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4308 no-value-for-this-character as NIL (as specified by ANSI).
4309 * HOST-NAMESTRING on physical pathnames now returns a string that is
4310 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4311 (thanks to Christophe Rhodes)
4312 * The Alpha port handles icache flushing more correctly. (thanks to
4314 * More progress has been made toward bootstrapping under CLISP. (thanks
4315 to Christophe Rhodes)
4316 * The fasl file format has changed again, because dynamic loading
4317 on OpenBSD (which has non-ELF object files) motivated some cleanups
4318 in the way that foreign symbols are transformed and passed around.
4319 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4320 is no longer treated as whitespace by the reader, but instead as
4321 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4322 |A
\7fB|, instead of A as it used to.
4324 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4325 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4326 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4327 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4328 this as of 0.7.1.45, but was left out of the previous news section
4329 (thanks to Dan Barlow)
4330 * SBCL now runs on the Solaris operating system on SPARC architectures
4331 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4332 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4333 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4334 * SPARC backend cleanups, allowing builds of cores optimized for V8
4335 and V9 SPARCS, and also emission of code targeted to a particular
4336 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4338 * SBCL is closer to bootstrapping under CLISP, thanks to various
4339 fixes by Christophe Rhodes.
4340 * The fasl file format has changed again, to allow the compiler's
4341 INFO database to support symbol macros.
4342 * The user manual (in doc/) is formatted into HTML more nicely.
4343 (thanks to coreythomas)
4344 * The system is smarter about SUBTYPEP relationships, especially
4345 those involving NOT types (including types such as ATOM which are
4346 represented internally using NOT types). Thus SUBTYPEP is less
4347 likely to return (VALUES NIL NIL) in general, and in particular
4348 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4350 * The fasl file format has changed again, because the internal
4351 representation of types now includes a new slot to support the new
4352 SUBTYPEP-of-NOT-types logic.
4353 * (not a change in the main branch of SBCL, but a related prototype
4354 which can hopefully be merged into the main branch of SBCL in the
4355 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4356 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4357 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4358 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4359 dispatch macro character combinations. (thanks to Alexey Dejneka)
4360 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4361 that superficially look like logical namestrings correctly.
4362 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4364 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4365 default supplied-p) for &optional and &key arguments. (thanks to
4368 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4369 * incompatible change: The compiler is now less aggressive about
4370 tail call optimization, doing it only when (> SPACE DEBUG) or
4371 (> SPEED DEBUG). (This is an incompatible change because there are
4372 programs which relied on the old CMU-CL-style behavior to optimize
4373 away their unbounded recursion which will now die of stack overflow.)
4374 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4375 for non-GENCGC systems has been increased to 20M (since that
4376 seems much closer to the likely performance optimum for modern
4377 systems than the old 4M value was)
4378 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4379 and *DEBUG-PRINT-LEVEL*
4380 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4381 of CMU CL's support for SPARC, and various endianness and other
4382 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4383 * new syntactic sugar for the Unix command line: --load foo.bar is now
4384 an alternate notation for --eval '(load "foo.bar")'.
4386 ** The system now detects stack overflow and handles it gracefully,
4387 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4388 optimization settings. (This is a good thing in general, and
4389 its introduction in this version should be particularly timely
4390 for anyone whose code fails because of suppression of tail
4392 ** The system now hunts for the C variable "environ" in a more
4393 devious way, to avoid segfaults when the C library version differs
4394 between compile time and run time. (thanks to Christophe Rhodes)
4395 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4396 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4397 ** The compiler no longer issues bogus style warnings for undefined
4398 classes in the same source file as the DEFCLASSes which defined
4399 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4401 ** fixes in CONDITION class precedence list for undefined function
4402 errors (thanks to Alexei Dejneka)
4403 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4404 correctly. (thanks to Dan Barlow)
4405 ** portability fixes aiming at bootstrapping under CLISP (thanks
4406 to Dave McDonald and Christophe Rhodes)
4407 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4408 ** fixes in type translation and and type inference (thanks to
4410 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4411 ** various fixes in the new ports (thanks to Dan Barlow)
4412 * several changes related to debugging:
4413 ** suppression of tail recursion, as noted above
4414 ** stack overflow detection, as noted above
4415 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4416 is now the default. (For some time encapsulation has been more
4417 reliable than the breakpoint-based :ENCAPSULATE NIL
4418 implementation, at least on X86 systems; and I just noticed that
4419 encapsulation also seems closer to the spirit of the ANSI
4422 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4424 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4425 up properly again. (There was a packaging bug in 0.7.0 which
4426 left their definitions in SB-SYS::LOAD-FOREIGN and
4427 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4428 vital for most things which interface to C-level interfaces,
4429 like extensions working with sockets or databases or
4430 Perl-compatible regexes or whatever, and the need to fix
4431 this bug is the main reason that 0.7.1 was released so
4433 ** DEFGENERIC is now choosier about the methods it redefines, so that
4434 reLOADing a previously-LOADed file containing DEFGENERICs does
4435 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4436 cycle now works as it should. (thanks to Alexey Dejneka)
4437 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4438 fixed by Christophe Rhodes. (He actually submitted this patch
4439 months ago, and I delayed until after 0.7.0.)
4440 ** Bug 111 (internal compiler confusion about runtime checks on
4441 FUNCTION types) was fixed by Alexey Dejneka.
4442 * Some internal cleanups (getting rid of variables which aren't
4443 needed now that the byte interpreter is gone) caused the fasl
4444 file format number to change again.
4446 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4447 * major incompatible change: The default fasl file extension, i.e. the
4448 default extension for files produced by COMPILE-FILE, has changed
4449 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4451 ** There are many changes in the implementation of the compiler.
4452 SBCL is now essentially a compiler-only implementation of ANSI
4453 Common Lisp. EVAL still "interprets" a few special cases, but
4454 almost all the interesting cases are handled by creating
4455 a LAMBDA expression, calling COMPILE on it, then calling
4456 FUNCALL on the result.
4457 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4458 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4459 Since the code is newer, there might still be some new bugs
4460 (though not as many as before Martin Atzmueller's fixes:-). But
4461 the new code is substantially simpler and clearer, and hopefully
4462 any remaining bugs will be simpler, less fundamental, and more
4463 fixable then the bugs in the old code.
4464 ** The revised compiler is still a little unsteady on its feet.
4466 *** The debugging information it produces (particularly the names
4467 of FUNCTION objects) is sometimes much less useful than what
4468 the old compiler produced.
4469 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4470 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4471 within a MACROLET) has been temporarily weakened.
4472 ** There are new compiler optimizations for various functions:
4473 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4474 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4475 *** the math functions TRUNCATE, FLOOR, and CEILING
4476 *** the function-of-all-trades COERCE
4477 Mostly these should be transparent, but there's one
4478 potentially-annoying problem (bug 117): when the compiler
4479 inline-expands a function and does type analysis on the result,
4480 it can create control paths which have type mismatches, and
4481 when it can't prove that those control paths aren't taken,
4482 it will issue WARNINGs about the type mismatches. This is
4483 a particular problem in practice for the new sequence functions.
4484 It's not clear how this should be fixed, and for now, a
4485 workaround is given in the entry for 117 in the BUGS file.
4486 ** (Because of the interaction between the two previous items --
4487 occasional inlining problems and new inline expansions -- some
4488 of the new sequence function optimizations won't really kick in
4489 completely until debugging information, and then inlining, are
4490 straightened out in some future version.)
4491 * minor incompatible changes:
4492 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4493 DIRECTORY no longer implicitly promotes NIL slots of its
4494 pathname argument to :WILD. In particular, when you ask for the
4495 contents of a directory (which you used to be able to do without
4496 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4497 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4498 ** changes in behavior that ANSI explicitly defines to be
4499 implementation dependent:
4500 *** The new compiler-only implementation still conforms with ANSI,
4501 but acts a little different than before. Besides the obvious
4502 changes in performance tradeoffs (that the cost per form passed
4503 to EVAL has gone up, and the cost per form executed by EVAL
4504 has gone down), the behavior of the system changes a little
4505 because there are no longer any interpreted function objects.
4506 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4507 e.g. doing COMPILE on the output of interactive DEFUN is
4509 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4511 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4512 has changed from (:CL) to NIL.
4513 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4514 e.g. #\Newline and #\Tab, don't have names specified in the
4515 ANSI Common Lisp standard, is now based on their ASCII symbolic
4516 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4517 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4518 are no longer used for output.
4519 ** changes in internal implementation constants:
4520 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4521 4 million. (If your application spends a lot of time GCing and
4522 you have a lot of RAM, you might want to experiment with
4523 increasing it even more.)
4524 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4525 However, almost all old code should still continue to work without
4526 immediate update, as SB-C-CALL is now a (deprecated) nickname
4528 ** Old operator names in the style DEF-FOO are now deprecated in
4529 favor of new corresponding names DEFINE-FOO, for consistency with
4530 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4531 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4532 internal symbols, but a few supported extensions like
4533 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4534 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4535 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4536 etc. as you get deeper into recursive calls to the debugger
4537 command loop, instead of the old "5]", "5]]", "5]]]"
4538 sequence. (I was motivated to do this when squabbles between
4539 ILISP and SBCL left me very deeply nested in the debugger. In the
4540 short term, this change will probably provoke more ILISP/SBCL
4541 squabbles, but hopefully it will be an improvement in the long run.)
4542 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4543 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4544 function, since declaiming return types involving aliens is
4545 (1) annoyingly messy to do by hand and (2) vital to efficient
4546 compilation of code which calls such functions.
4547 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4548 longer reexported by the SB-EXT package. They're solely useful
4549 for alien code, so it seems more logical that you should get
4550 them from the SB-ALIEN package, not in SB-EXT.
4551 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4552 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4553 features. Instead, the code that they used to control is always
4554 built into the system.
4555 * many other bug fixes
4556 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4557 advantage of the new EVAL-WHEN stuff and to clean them up in
4558 general, and they are now more ANSI-compliant in a number of
4559 ways. Martin Atzmueller is responsible for a lot of this.
4560 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4562 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4563 *** correct ERROR type for various file operations
4564 *** some fixes for Lisp streams
4565 *** DEFMETHOD syntax checking
4566 *** changing old weird representation of debug information as
4567 strings (which, among their other deficiencies, don't transform
4568 correctly when you rename packages, and don't change their
4569 print representation when you change things like *PACKAGE*
4570 and *PRINT-LENGTH*) to symbols and lists of symbols
4571 He also made several improvements and fixed several bugs in DESCRIBE.
4572 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4574 *** misbehavior of WRITE-STRING/WRITE-LINE
4575 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4576 and several other LOOP problems as well
4577 *** DIRECTORY when similar filenames are present
4578 *** DEFGENERIC with :METHOD options
4579 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4580 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4581 *** argument ordering in FIND with :TEST option
4582 *** mishandled package designator argument in APROPOS-LIST
4583 *** various problems in the backquote readmacro
4584 *** a bug in APROPOS
4585 *** probably some others that I'm not describing very well here,
4586 since the CVS log documents them by reference to sbcl-devel
4587 messages, and the SourceForge archives aren't working well.:-(
4588 ** Dan Barlow improved the Alpha port (and is making progress on the
4589 PPC port, for those of you who think different).
4590 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4591 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4592 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4593 continues to work on the SPARC port (for those of you in a position
4594 to look down upon our little PC-compatible boxes from a great height).
4595 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4596 and uses that copy, rather than the current dynamic value, when
4597 it's trying to decide whether to truncate output. Thus e.g.
4598 (let ((*print-lines* 50))
4599 (pprint-logical-block (stream nil)
4601 (let ((*print-lines* 8))
4602 (print (aref possiblybigthings i) stream)))))
4603 should now truncate the logical block only at 50 lines, instead of
4604 often truncating it at 8 lines, as it did before.
4605 * The doc/cmucl/ directory, containing old CMU CL documentation
4606 from the time of the fork, is no longer part of the base system.
4607 SourceForge has shut down its anonymous FTP service, and with it
4608 my original plan for distributing the old CMU CL documentation
4609 there. For now, if you need these files you can download an old
4610 SBCL source release and extract them from it.
4611 * The fasl file version number changed again, for dozens of reasons,
4612 some of which are apparent above.
4614 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4615 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4616 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4617 patch, so that DISASSEMBLE output is much nicer.
4618 * The code in the SB-PROFILE package now seems reasonably stable.
4619 I still haven't decided what the final interface should look like
4620 (I'd like PROFILE to interact cleanly with TRACE, since both
4621 facilities use function encapsulation) but if you have a need
4622 for profiling now, you can probably use it successfully with
4623 the current CMU-CL-style interface.
4624 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4625 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4626 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4627 link now returns the dangling link itself, and for similar
4628 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4629 link itself. (In these cases the old code signalled an error and
4630 looped endlessly, respectively.) Thus, DIRECTORY now works even
4631 in the presence of dangling and cyclic symbolic links.
4632 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4633 is now a supported extension again, since the consensus on
4634 sbcl-devel was that it can be useful for ordinary development
4635 work, not just for debugging SBCL itself.
4636 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4637 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4638 that currently-defined functions might be redefined later with
4639 different return types.
4640 * Hash tables can be printed readably, as inspired by CMU CL code
4641 of Eric Marsden and SBCL code of Martin Atzmueller.
4642 * better error handling in CLOS method combination, thanks to
4643 Martin Atzmueller porting Pierre Mai's CMU CL patches
4644 * more overflow fixes for >16Mbyte I/O buffers
4645 * A bug in READ has been fixed, so that now a single Ctrl-D
4646 character suffices to cause end-of-file on character streams.
4647 In particular, now you only need one Ctrl-D at the command
4648 line (not two) to exit SBCL.
4649 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4651 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4652 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4653 does the right thing.
4654 * The implementation of some type tests, especially for CONDITION
4655 types, is now tidier and maybe faster, due to CMU CL code
4656 originally by Douglas Crosher, ported by Martin Atzmueller.
4657 * Some math functions have been fixed, and there are new
4658 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4659 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4660 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4661 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4662 likely to be built into sbcl-0.7.0.)
4663 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4664 CL, ported to SBCL by Martin Atzmueller)
4665 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4666 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4667 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4668 * There's a new slam.sh hack to shorten the edit/compile/debug
4669 cycle for low-level changes to SBCL itself, and a new
4670 :SB-AFTER-XC-CORE target feature to control the generation of
4671 the after-xc.core file needed by slam.sh.
4672 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4673 COMPILE-FILE is no longer supported, so that now every function
4674 gets an entry point, so that block compilation looks a little
4675 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4676 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4677 returns the number of bytes consed since the system started,
4678 rather than the number consed since the first time the function
4679 was called. (The new definition parallels ANSI functions like
4680 CL:GET-INTERNAL-RUN-TIME.)
4681 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4682 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4683 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4684 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4685 * Fasl file version numbers are now independent of the target CPU,
4686 since historically most system changes which required version
4687 number changes have affected all CPUs equally. Similarly,
4688 the byte fasl file version is now equal to the ordinary
4691 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4692 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4693 is no longer recognized. I apologize for this, because it was
4694 listed in SB-EXT as a supported extension, but I found that
4695 its existing behavior was poorly specified, as well as incorrectly
4696 specified, and it looked like too much of a mess to straighten it
4697 out. I have enough on my hands trying to get ANSI stuff to work..
4698 * many patches ported from CMU CL by Martin Atzmueller, with
4699 half a dozen bug fixes in pretty-printing and the debugger, and
4700 half a dozen others elsewhere
4701 * fixed bug 13: Floating point infinities are now supported again.
4702 They might still be a little bit flaky, but thanks to bug reports
4703 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4704 as flaky as they were.
4705 * The --noprogrammer command line option is now supported. (Its
4706 behavior is slightly different in detail from what the old man
4707 page claimed it would do, but it's still appropriate under the
4708 same circumstances that the man page talks about.)
4709 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4710 are now supported, and enabled by default. Thus, the compiler can
4711 handle many floating point and complex operations much less
4712 inefficiently. (Thus e.g. you can implement a complex FFT
4714 * The compiler now detects type mismatches between DECLAIM FTYPE
4715 and DEFUN better, and implements CHECK-TYPE more correctly, and
4716 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4717 thanks to patches from Martin Atzmueller.
4718 * various fixes to make the cross-compiler more portable to
4719 ANSI-conforming-but-different cross-compilation hosts (notably
4720 Lispworks for Windows, following bug reports from Arthur Lemmens)
4721 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4722 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4723 fixed thanks to Pierre Mai's CMU CL patches.
4724 * fixes to keep the system from overflowing internal counters when
4725 it tries to use i/o buffers larger than 16M bytes
4726 * fixed bug 45a: Various internal functions required to support
4727 complex special functions have been merged from CMU CL sources.
4728 (When I was first setting up SBCL, I misunderstood a compile-time
4729 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4730 * improved support for type intersection and union, fixing bug 12
4731 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4732 more obscure bugs as well
4733 * some steps toward byte-compiling non-performance-critical
4734 parts of the system, courtesy of patches from Martin Atzmueller
4735 * Christophe Rhodes has made some debian packages of sbcl at
4736 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4737 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4738 stable, but are nonetheless usable. When he's ready, I'd be happy
4739 to add them to the SourceForge "File Releases" section. (And if
4740 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4741 * new fasl file format version number (because of changes in
4742 internal representation of (OR ..) types to accommodate the new
4743 support for (AND ..) types, among other things)
4745 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4746 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4748 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4750 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4751 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4752 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4753 * DESCRIBE now works on structure objects again.
4754 * Most function call argument type mismatches are now handled as
4755 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4756 know whether the function will be redefined before the call is
4757 executed. (The compiler could flag local calls with full WARNINGs,
4758 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4759 it doesn't keep track of enough information to know whether calls
4760 are local in this sense.)
4761 * Compiler output is now more verbose, with messages truncated
4762 later than before. (There should be some supported way for users
4763 to override the default verbosity, but I haven't decided how to
4764 provide it yet, so this behavior is still controlled by the internal
4765 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4766 src/compiler/ir1util.lisp.)
4767 * Fasl file format version numbers have increased again, because
4768 support for the Gray streams extension changes the layout of the
4769 system's STREAM objects.
4770 * The Gray subclassable streams extension now works, thanks to a
4771 patch from Martin Atzmueller.
4772 * The full LOAD-FOREIGN extension (not just the primitive
4773 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4774 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4775 but like most other programs, it defaults to copying the Unix
4776 environment from the original process instead of starting the
4777 new process in an empty environment.
4778 * Extensions which manipulate the Unix environment now support
4779 an :ENVIRONMENT keyword option which doesn't smash case or
4780 do other bad things. The CMU-CL-style :ENV option is retained
4781 for porting convenience.
4782 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4783 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4785 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4787 * A patch from Martin Atzmueller seems to have solved the SIGINT
4788 problem, and as far as we know, signal-handling now works cleanly.
4789 (If you find any new bugs, please report them!)
4790 * The system no longer defaults Lisp source file names to types
4791 ".l", ".cl", or ".lsp", but only to ".lisp".
4792 * The compiler no longer uses special default file extensions for
4793 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4794 seems to expect a single default extension for all compiled code,
4795 and there's no compelling reason to try to stretch the standard
4796 to allow two different extensions.) Instead, byte-compiled files
4797 default to the same extension as native-compiled files.
4798 * Fasl file format version numbers have increased again, because
4799 a rearrangement of internal implementation packages made some
4800 dumped symbols in old fasl files unreadable in new cores.
4801 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4802 many fewer weird special cases.
4803 * Bug #17 (differing COMPILE-FILE behavior between logical and
4804 physical pathnames) has been fixed, and some related misbehavior too,
4805 thanks to a patch from Martin Atzmueller.
4806 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4807 by Tim Moore, ported to SBCL by Martin Atzmueller.
4808 * Martin Atzmueller fixed several filesystem-related problems,
4809 including bug #36, in part by porting CMU CL patches, which were
4810 written in part by Paul Werkowski.
4811 * More compiler warnings in src/runtime/ are gone, thanks to
4812 more patches from Martin Atzmueller.
4813 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4816 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4818 * DESCRIBE now works on CONDITION objects.
4819 * The debugger now handles errors which arise when trying to print
4820 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4822 * The build system now uses an additional file, customize-target-features.lisp,
4823 to allow local modifications to the target *FEATURES* list. (The point of
4824 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4825 debugging features enabled, without having to worry about propagating it
4826 into everyone's system when I do a "cvs update".) When no
4827 customize-target-features.lisp file exists, the target *FEATURES* list
4828 should be constructed the same way as before.
4829 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4830 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4831 warn about behavior which is undefined under the ANSI spec. Note: This
4832 is specified by ANSI, but it's not very popular with programmers.
4833 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4834 macro in the SBCL sources for an example of a workaround which you
4835 might use to make portable ANSI-standard code which does what you want.
4836 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4837 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4838 when it's used as a non-toplevel form. (This is required in order
4839 to implement the DEFCONSTANT-EQX macro.)
4840 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4841 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4842 funny things, due to bugs in the implementation of EVAL-WHEN
4843 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4844 non-toplevel DEFCONSTANTs are uncommon.)
4845 * The core file version number and fasl file version number have been
4846 incremented, because the old noncompliant DEFCONSTANT behavior involved
4847 calling functions which no longer exist, and because I also took the
4848 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4849 * fixed bug 1 (error handling before read-eval-print loop starts), and
4850 redid debugger restarts and related debugger commands somewhat while
4852 ** The QUIT debugger command is gone, since it did something
4853 rather different than the SB-EXT:QUIT command, and since it never
4854 worked properly outside the main toplevel read/eval/print loop.
4855 Invoking the new TOPLEVEL restart provides the same functionality.
4856 ** The GO debugger command is also gone, since you can just invoke
4857 the CONTINUE restart directly instead.
4858 ** The TOP debugger command is also gone, since it's redundant with the
4859 FRAME 0 command, and since it interfered with abbreviations for the
4861 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4863 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4864 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4865 some porting work by Martin Atzmueller)
4866 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4867 with a boatload of patches which he ported to SBCL. Now that those
4869 ** The system tries to make sure that its low-priority messages
4870 are prefixed by semicolons, to help people who like to use
4871 syntax highlighting in their ILISP buffer. (This patch
4872 was originally due to Raymond Toy.)
4873 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4874 patches originally written by Raymond Toy.
4875 ** The compiler understands coercion between single-value and
4876 multiple-VALUES type expressions better, getting rid of some very
4877 weird behavior, thanks to patches originally by Robert MacLachlan
4878 and Douglas Crosher.
4879 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4880 lambda lists, thanks to a patch originally by Pierre Mai.
4881 ** The system no longer bogusly warns about "abbreviated type
4883 ** The compiler gets less confused by inlining and RETURN-FROM,
4884 thanks to some patches originally by Tim Moore.
4885 ** The system no longer hangs when dumping circular lists to fasl
4886 files, thanks to a patch originally from Douglas Crosher.
4887 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4888 undefined function error.
4889 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4890 in structure slot initforms) for now, documented workaround instead:-|
4891 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4892 * fixed bug 5: added stubs for various Gray stream functions called
4893 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4894 installed, at least appropriate type errors are generated
4895 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4896 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4897 consistently in DEFMETHOD forms.
4898 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4899 it doesn't seem to affect SBCL after all
4900 * The C runtime system now builds with better optimization and many
4901 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4903 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4905 * The system is now under CVS at SourceForge (instead of the
4906 CVS repository on my home machine).
4907 * The new signal handling code has been tweaked to treat register
4908 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4909 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4910 downstream, e.g. in debug-int.lisp, has implicit dependencies
4911 on the unsignedness of integer representation of machine words,
4912 and that caused the system to bomb out with infinite regress
4913 when trying to recover from type errors involving signed values,
4914 e.g. (BUTLAST '(1 2 3) -1).)
4915 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4916 (This was one of the bugs Peter Van Eynde reported back in July.)
4917 * The system now uses code inspired by Colin Walters' O(N)
4918 implementation of MAP (from the cmucl-imp@cons.org mailing
4919 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4920 inline the MAP operation, and there is more than one
4921 sequence argument to the MAP call (so that it can't just
4922 do ETYPECASE once and for all based on the type of the
4923 single sequence argument). (The old non-inline implementation
4924 of the general M-argument sequence-of-length-N case required
4925 O(M*N*N) time when any of the sequence arguments were LISTs.)
4926 * The QUIT :UNIX-CODE keyword argument has been renamed to
4927 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4928 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4930 * Raymond Wiker's patches to port dynamic loading from Linux to
4931 FreeBSD have been added.
4932 * The BUGS file is now more nearly up to date, thanks in large part
4933 to Martin Atzmueller's review of it.
4934 * The debugger now flushes standard output streams before it begins
4935 its output ("debugger invoked" and so forth).
4936 * The core version number and fasl file version number have both
4937 been incremented, because of incompatible changes in the layout
4939 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4940 used to not be called for a saved Lisp image.)
4941 * Martin Atzmueller's version of a patch to fix a compiler crash,
4942 as posted on sbcl-devel 13 September 2000, has been installed.
4943 * Instead of installing Martin Atzmueller's patch for the
4944 compiler transform for SUBSEQ, I deleted the compiler transform,
4945 and transforms for some similar consing operations.
4946 * A bug in signal handling which kept TRACE from working on OpenBSD
4948 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4949 away by constant folding
4950 * The system now defines its address space constants in one place
4951 (in the Lisp sources), and propagates them automatically elsewhere
4952 (through GENESIS and the sbcl.h file). Therefore, patching the
4953 address map is less unnecessarily tedious and error-prone. The
4954 Lisp names of address space constants have also been systematized.
4955 * CVS tags like dollar-Header-dollar have been removed from
4956 the sources, because they have never saved me trouble and
4957 they've been source of trouble working with patches and other
4958 diff-related operations.
4959 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4960 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4962 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4964 * The system has been ported to OpenBSD.
4965 * The system now compiles with a simple "sh make.sh" on the systems
4966 that it's supported on. I.e., now you no longer need to tweak
4967 text in the target-features.lisp-expr and symlinks in src/runtime/
4968 by hand, the make.sh takes care of it for you.
4969 * The system is no longer so grossly inefficient when compiling code
4970 involving vectors implemented as general (not simple) vectors (VECTOR T),
4971 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4972 which dares to use the various sequence functions on non-simple
4973 vectors, takes less of a performance hit.
4974 * There is now a primitive type predicate VECTOR-T-P
4975 to test for the (VECTOR T) type, so that e.g.
4976 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4977 can now be compiled with some semblance of efficiency. (The old code
4978 turned the type declaration into a full call to %TYPEP at runtime!)
4979 * AREF on (VECTOR T) is still not fast, since it's still compiled
4980 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4981 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4982 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4983 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4984 without making full calls to SUBTYPEP at runtime.
4985 (Some analogous efficiency issues for non-simple vectors specialized to
4986 element types other than T, or for non-simple multidimensional arrays,
4987 have not been addressed. They could almost certainly be handled the
4988 same way if anyone is motivated to do so.)
4989 * The changes in array handling break binary compatibility, so
4990 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4991 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4992 instead of (VALUES T T).
4993 * By following the instructions that Dan Barlow posted to sbcl-devel
4994 on 2 July 2000, I was able to enable primitive dynamic object
4995 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4996 functionality is not implemented (since it calls ld to resolve
4997 library references automatically, requiring RUN-PROGRAM for its
4998 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4999 try to resolve library references) is now supported.
5000 * The system now flushes the standard output streams when it terminates,
5001 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5002 them at several other probably-convenient times, e.g. in each pass of
5003 the toplevel read-eval-print loop, and after evaluating a form given
5004 as an "--eval" command-line option. (These changes were motivated by a
5005 discussion of stream flushing issues on cmucl-imp in August 2000.)
5006 * The source transform for TYPEP of array types no longer assumes
5007 that an array whose element type is a not-yet-defined type
5008 is implemented as an array of T, but instead punts, so that the
5009 type will be interpreted at runtime.
5010 * There is now some support for cross-compiling in make.sh: each of
5011 the phases of make.sh has its own script. (This should be transparent
5012 to people doing ordinary, non-cross-compile builds.)
5013 * Since my laptop doesn't have hundreds of megabytes of memory like
5014 my desktop machine, I became more motivated to do some items on
5015 my to-do list in order to reduce the size of the system a little:
5016 ** Arrange for various needed-only-at-cold-init things to be
5017 uninterned after cold init. To support this, those things have
5018 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5019 symbols with such names are now uninterned after cold init).
5020 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5021 fasl files for cold load.
5022 ** Remove the old compiler structure pooling code (which used to
5023 be conditional on the target feature :SB-ALLOC) completely.
5024 ** Redo the representation of some data in cold init to be more compact.
5025 (I also looked into supporting byte compiled code at bootstrap time,
5026 which would probably reduce the size of the system a lot, but that
5027 looked too complicated, so I punted for now.)
5028 * The maximum signal nesting depth in the src/runtime/ support code has
5029 been reduced from 4096 to 256. (I don't know any reason for the very
5030 large old value. If the new smaller value turns out to break something,
5031 I'll probably just bump it back up.)
5032 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5034 * Many, many bugs reported by Peter Van Eynde have been added to
5035 the BUGS list; some have even been fixed.
5036 * While enabling dynamic object file loading, I tried to make the
5037 code easier to understand, renaming various functions and variables
5038 with less ambiguous names, and changing some function calling
5039 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5040 * While trying to figure out how to do the OpenBSD port, I tried to
5041 clean up some of the code in src/runtime/. In particular, I dropped
5042 support for non-POSIX signal handling, added various comments,
5043 tweaked the code to reduce the number of compilation warnings, and
5044 renamed some files to increase consistency.
5045 * To support the new automatic configuration functionality in make.sh,
5046 the source file target-features.lisp-expr has been replaced with the
5047 source file base-target-features.lisp-expr and the machine-generated
5048 file local-target-features.lisp-expr.
5049 * fixed a stupid quoting error in make.sh so that using CMU CL
5050 "lisp -batch" as cross-compilation host works again
5052 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5054 * DESCRIBE no longer tries to call itself recursively to describe
5055 bound/fbound values, so that it no longer fails on symbols which are
5056 bound to themselves (like keywords, T, and NIL).
5057 * DESCRIBE now works on generic functions.
5058 * The printer now prints less-screwed-up representations of closures
5059 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5060 * A private symbol is used instead of the :EMPTY keyword previously
5061 used to mark empty slots in hash tables. Thus
5062 (DEFVAR *HT* (MAKE-HASH-TABLE))
5063 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5064 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5065 now does what ANSI says that it should. (You can still get
5066 similar noncompliant behavior if bang on the hash table
5067 implementation with all the symbols you get back from
5068 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5069 This breaks binary compatibility, since tests for equality to
5070 :EMPTY are wired into things like the macroexpansion of
5071 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5073 * There's now a minimal placeholder implementation for CL:STEP,
5074 as required by ANSI.
5075 * An obscure bug in the interaction of the normal compiler, the byte
5076 compiler, inlining, and structure predicates has been patched
5077 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5078 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5080 * Missing ordinary arguments in a macro call are now detected even
5081 when the macro lambda list contains &KEY or &REST.
5082 * The debugger no longer complains about encountering the top of the
5083 stack when you type "FRAME 0" to explicitly instruct it to go to
5084 the top of the stack. And it now prints the frame you request even
5085 if it's the current frame (instead of saying "You are here.").
5086 * As specified by ANSI, the system now always prints keywords
5087 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5089 * The default initial SIZE of HASH-TABLEs is now smaller.
5090 * Type information from CLOS class dispatch is now propagated
5091 into DEFMETHOD bodies, so that e.g.
5092 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5094 is now basically equivalent to
5095 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5096 (DECLARE (TYPE SINGLE-FLOAT X))
5098 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5099 operation, without having to do run-time type dispatch.
5100 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5101 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5102 * Since I don't seem to be making big file reorganizations very often
5103 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5104 is overflowing my ability to conveniently back them up), I've finally
5105 checked the system into CVS. (The CVS repository is on my home system,
5106 not at SourceForge -- putting it on SourceForge might come later.)
5107 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5108 high-level GC-NOTIFY-FOO functions send their output. (There's
5109 still very little control of where low-level verbose GC functions
5110 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5111 less than it used to -- the GC-NOTIFY-FOO functions are now under
5112 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5113 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5114 in only one place in the source code, and propagates it automatically
5115 everywhere that it's needed. Thus e.g. when I bump the version from
5116 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5117 * The C source files now include boilerplate legalese and documentation
5118 at the head of each file (just as the Lisp source files already did).
5119 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5120 to his page will be replaced with a link to his new CLiki service.
5122 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5124 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5125 * The build process now looks for GNU make under the default name "gmake",
5126 instead of "make" as it used to. If GNU make is not available as "gmake"
5127 on your system, you can change this default behavior by setting the
5128 GNUMAKE environment variable.
5129 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5130 can build without error under CMU CL.
5132 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5134 * There is now a partial SBCL user manual (with some new text and some
5135 text cribbed from the CMU CL manual).
5136 * The beginnings of a profiler have been added (starting with the
5137 CMU CL profiler and simplifying and cleaning up). Eventually the
5138 main interface should be through the TRACE macro, but for now,
5139 it's still accessed through vaguely CMU-CL-style functions and macros
5140 exported from the package SB-PROFILE.
5141 * Some problems left over from porting CMU CL to the new
5142 cross-compilation bootstrap process have been cleaned up:
5143 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5144 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5145 part when getting rid of the compiler *BACKEND* stuff.)
5146 ** The value of *NULL-TYPE* was screwed up, because it was
5147 being initialized before the type system knew the final
5148 definition of the 'NULL type. This screwed up several key
5149 optimizations in the compiler, causing inefficiency in all sorts
5150 of places. (I found it because I wanted to understand why
5151 GET-INTERNAL-RUN-TIME was consing.)
5152 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5153 PROCLAIM FTYPE information. Unfortunately this broke binary
5154 compatibility again, since now the forms output by DEFGENERIC
5155 to refer to functions which didn't exist in 0.6.3.
5156 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5157 can use the new (as of 0.6.3) transform for SOME into MAP into
5159 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5160 values to (INTEGER 0 1000000), so that the time code will no longer
5161 occasionally get blown up by Linux returning 1000000 microseconds
5162 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5163 its output conform to the ANSI spec. (Alas, this makes its output
5164 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5165 * A full call to MAP NIL with a single sequence argument no longer conses.
5166 * fixes to problems pointed out by Martin Atzmueller:
5167 * The manual page no longer talks about multiprocessing as though
5168 it were currently supported.
5169 * The ILISP support patches have been removed from the distribution,
5170 because as of version 5.10.1, ILISP now supports SBCL without us
5171 having to maintain patches.
5172 * added a modified version of Raymond Toy's recent CMU CL patch for
5173 EQUALP comparison of HASH-TABLE
5175 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5177 * The system still can't cross-compile itself with
5178 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5179 entails), but at least it can compile more of itself that way
5180 than it used to be able to, and various buglets which were uncovered
5181 by trying to cross-compile itself that way have now been fixed.
5182 * This release breaks binary compatibility again. This time
5183 at least I've incremented the FASL file format version to 2, so that the
5184 problem can be detected reliably instead of just causing weird errors.
5185 * various new style warnings:
5186 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5187 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5188 ** using the lexical binding of a variable named in the *FOO* style
5189 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5190 as specified by ANSI.
5191 * *RANDOM-STATE* is no longer automatically initialized from
5192 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5193 default behavior of the system is to repeat its behavior every time
5194 it's run. If you'd like to change this behavior, you can always
5195 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5196 old convention there was no comparably easy way to get the system to
5197 repeat its behavior every time it was run.
5198 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5199 FTYPE declarations has been removed, in favor of their ANSI
5200 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5201 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5202 the types of their sequence arguments can be determined at compile time.
5203 This is done through a new open code expansion for MAP which eliminates
5204 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5205 argument types can be determined at compile time.
5206 * The optimizer now transforms COERCE into an identity operation when it
5207 can prove that the coerced object is already of the correct type. (This
5208 can be a win for machine generated code, including the output of other
5209 optimization transforms, such as the MAP transform above.)
5210 * Credit information has been moved from source file headers into CREDITS.
5211 * Source file headers have been made more standard.
5212 * The CASE macro now compiles without complaining even when it has
5215 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5217 * (Note that the way that the PCL macroexpansions were rewritten
5218 to accommodate the change in DEFGENERIC below breaks binary
5219 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5220 not run under sbcl-0.6.2. Once we get out of alpha releases,
5221 i.e. hit release 1.0.0, we'll probably try to maintain binary
5222 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5223 and sbcl-1.4.4. Until then, however, it might be fairly common
5224 for maintenance releases to break binary compatibility.)
5225 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5227 * The reporting of unhandled signals has been changed to print some
5228 explanatory text as well as the report form. (Previously only
5229 the report form was printed.)
5230 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5231 it defines, so that the compiler no longer issues undefined function
5232 warnings for compiled-but-not-yet-loaded generic functions.
5233 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5234 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5235 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5236 section of the ANSI spec are supported.
5237 * The "" nickname for the "KEYWORD" package has been removed.
5238 The reader still handles symbol tokens which begin with a package marker
5239 as keywords, but it doesn't expose its mechanism for doing so in the
5240 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5241 * The system now issues STYLE-WARNINGs for contradictory TYPE
5242 proclamations. (Warnings for contradictory FTYPE proclamations would
5243 be nice too, but those can't be done usefully unless the type system
5244 is made smarter about FUNCTION types.)
5245 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5246 systematized, so that "*target-*.lisp is supposed to exist only on the
5247 target and imply that there's a related file which exists on the
5248 host, and *host-*.lisp is supposed to exist only on the host and imply
5249 that there's a related file which exists on the target. This involves a
5250 lot of renaming. Hopefully the acute confusion caused by the renaming
5251 will be justified by the reduction in chronic confusion..
5252 ** runtime-type.lisp -> early-target-type.lisp
5253 ** target-type.lisp -> late-target-type.lisp
5254 ** early-host-format.lisp -> early-format.lisp
5255 ** late-host-format.lisp -> late-format.lisp
5256 ** host-error.lisp -> misc-error.lisp
5257 ** early-error.lisp -> early-target-error.lisp
5258 ** late-error.lisp -> late-target-error.lisp
5259 ** host-defboot.lisp -> early-defboot.lisp
5260 ** code/misc.lisp -> code/target-misc.lisp
5261 ** code/host-misc.lisp -> code/misc.lisp
5262 ** code/numbers.lisp -> code/target-numbers.lisp
5263 ** code/early-numbers.lisp -> numbers.lisp
5264 ** early-host-type.lisp -> early-type.lisp
5265 ** late-host-type.lisp -> late-type.lisp
5266 ** host-typep.lisp -> typep.lisp
5267 ** load.lisp -> target-load.lisp
5268 ** host-load.lisp -> load.lisp
5269 ** host-disassem.lisp -> disassem.lisp
5270 ** host-insts.lisp -> insts.lisp
5271 ** byte-comp.lisp -> target-byte-comp.lisp
5272 ** host-byte-comp.lisp -> byte-comp.lisp
5273 ** host-signal.lisp -> signal.lisp
5274 ** host-defstruct.lisp -> defstruct.lisp
5275 ** late-target-type.lisp -> deftypes-for-target.lisp
5276 Furthermore, several other previously target-only files foo.lisp (e.g.
5277 hash-table.lisp and random.lisp) have been split into a target-and-host
5278 foo.lisp file and a target-only target-foo.lisp file, with their key type
5279 definitions in the target-and-host part, so that the cross-compiler will
5280 know more about target types.
5281 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5282 gone away. In their place are various *BACKEND-FOO* variables
5283 corresponding to the slots of the old structure.
5284 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5285 into the target SBCL has been fixed.
5286 * The chill.lisp system for loading cold code into a running SBCL
5288 * Support for the CMU CL "scavenger hook" extension has been removed.
5289 (It was undocumented and unused in the CMU CL sources that SBCL was
5290 derived from, and stale in sbcl-0.6.1.)
5291 * Various errors in the cross-compiler type system were detected
5292 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5293 (enabling various consistency checks). Many of them were fixed,
5294 but some hard problems remain, so the compiler is back to
5295 running without *TYPE-SYSTEM-INITIALIZED* for now.
5296 * As part of the cross-compiler type system cleanup, I implemented
5297 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5298 * I have started adding UNCROSS calls throughout the type system
5299 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5300 on cross-compiler input files will be able to go away, and various
5302 * CONSTANTP now returns true for quoted forms (as explicitly required
5305 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5307 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5308 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5309 (MAKE-LIST -1). In the longer term, it ought to become true
5310 that declarations are assertions even at SAFETY 1. For now, it's not
5311 quite true even at SAFETY 3, but it's at least more nearly true..
5312 (Note that this change seems to increases the size of the system by
5313 O(5%) and to decrease the speed of the compiler by 20% or more.)
5314 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5315 for the problem of printing dozens of lines of distracting information
5316 about low-level system machinery as part of the top stack frame
5317 on entry to the debugger when an undefined function was called.
5318 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5319 is not reset to COMMON-LISP-USER.
5320 * Compilation of stuff related to dyncount.lisp has been made conditional
5321 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5322 smaller. The various dyncount-related symbols have been moved into
5323 a new "SB-DYNCOUNT" package.
5324 * tty-inspect.lisp has been renamed to inspect.lisp.
5325 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5326 feature has gone away. (When we eventually port to other flavors of
5327 libc and/or Unix, we'll try to make the differences between flavors
5328 invisible at the user level.)
5329 * Various other *FEATURES* tags, and/or their associated conditionals,
5330 have been removed if obsolescent, or given better documentation, or
5331 sometimes given more-mnemonic names.
5333 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5335 * tidied up "make.sh" script
5336 * tidied up system directory structure
5337 * better "clean.sh" behavior
5338 * added doc/FOR-CMUCL-DEVELOPERS
5339 * many many small tweaks to output format, e.g. removing possibly-confusing
5340 trailing #\. character in DESCRIBE-INSTANCE
5341 * (EQUALP #\A 'A) no longer signals an error.
5342 * new hashing code, including EQUALP hashing
5343 * tidied up Lisp initialization and toplevel
5344 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5345 * command line argument processing
5346 * added POSIX-GETENV function to deal with Unix-ish environment variables
5347 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5348 terminating SBCL on EOF
5349 * non-verbose GC by default
5350 * There is no more "sbcl" shell script; the sbcl file is now the C
5351 runtime executable (just like CMU CL).
5352 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5354 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5355 symbol and package information as Lisp native symbol and package objects
5356 instead of strings naming symbols and strings naming packages. This way,
5357 whenever packages are renamed (as in warm init), debug information is
5358 transformed along with everything else.
5359 * tweaked the optimization policy declarations which control the building
5360 of SBCL itself. Now, among other things, the system no longer saves
5361 source location debugging information. (This helps two problems at once
5362 by reducing SBCL size and by keeping SBCL from trying to look for its
5363 sources -- which may not exist -- when reporting errors.)
5364 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5365 debugging and testing purposes
5366 * cleaned up printing, making the printer call PRINT-OBJECT for
5367 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5368 methods, giving nearly-ANSI behavior
5369 * converted almost all special variables to use *FOO* naming convention
5370 * deleted PARSE-TIME functionality, since it can be done portably
5371 * moved some files out of cold init into warm init
5372 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5374 * regularized formatting of source files
5375 * added an install.sh script
5376 * fixed ridiculous memory usage of cross-compiler by making
5377 compiler/alloc.lisp not try to do pooling unless it can hook
5378 itself into the GC of the cross-compilation host. Now the system
5379 builds nicely on my old laptop.
5380 * added :SB-ALLOC in target-features.lisp-expr
5381 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5382 was not implemented)
5383 * re-did condition handling and note reporting in the compiler. Notes
5384 are no longer handled by signalling conditions. Style warnings
5385 and warnings are handled more correctly and reported in such a way
5386 that it's easy to find one or the other in your output (so that you
5387 can e.g. figure out which of many problems caused COMPILE-FILE to
5389 * changed the severity of several compiler warnings from full WARNING
5390 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5391 compiler note reporting so that it doesn't use the condition system
5392 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5393 COMPILE-FILE command)
5394 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5395 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5396 no longer supported, since their implementation was deeply intertwingled
5397 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5398 * removed bogus "support" for compiler macros named (SETF FOO), and
5399 removed the compiler macro for SETF INFO (but only after making a fool
5400 of myself on the cmucl-imp mailing list by posting a bogus patch for
5401 DEFINE-COMPILER-MACRO..)
5402 * Compiled files containing forms which have side effects on the Lisp
5403 reader (such as DEFPACKAGE forms) are now handled more correctly.
5404 (Compiler queuing of top level lambdas has been suppressed by setting
5405 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5406 * deleted various currently-unused source files, e.g. gengc.lisp. They
5407 may be added back at some point e.g. when porting to other architectures,
5408 but until they are it's distracting to distribute them and to try to
5410 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5411 there were so many of them they're just distractions, and UNCROSS is
5412 known to be able to handle the current sources
5413 * moved PROFILE functionality into TRACE, so that it will be clear
5414 how the wrapping and unwrapping of functions when you profile them
5415 interacts with the wrapping and unwrapping of functions when you
5416 trace them. (Actually, the functionality isn't there yet, but at least
5417 the interface specification is there. Hopefully, the functionality will
5418 arrive with some future maintenance release.)
5419 * removed host-oops.lisp
5420 * changed signature of QUIT function to allow UNIX-CODE argument
5421 * fixed READ-SEQUENCE bug
5422 * tweaked verbose GC output so that it looks more like the progress
5423 output that ANSI specifies for functions like LOAD
5424 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5425 * added <http://sbcl.sourceforge.com> to the banner information printed by