1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.30:
3 * improvement: stack allocation is should now be possible in all nested
4 inlining cases: failure to stack allocate when equivalent code is manually
5 open coded is now considered a bug.
6 * improvement: the Unicode character database has been upgraded to the
7 Unicode 5.0.1 standard, giving names and properties to a number of new
8 characters, and providing a few extra characters with case
10 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
11 be used to output toplevel compile-time effects into a separate .CFASL
13 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
14 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
16 * optimization: division of floating point numbers by constants uses
17 multiplication by reciprocal when an exact reciprocal exists.
18 * optimization: multiplication of single- and double-floats floats by
19 constant two has been optimized.
20 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
21 sufficient type information is available. (thanks to Leslie Polzer)
22 * improvement: a STYLE-WARNING is signalled when a generic function
23 clobbers an earlier FTYPE proclamation.
24 * improvement: the compiler is able to track the effective type of
25 generic function across method addition and removal even in the
26 absence of an explicit DEFGENERIC.
27 * improvement: DESCRIBE now reports on symbols naming undefined
28 but assumed or declared function as well.
29 * improvement: recompilation of systems using SB-GROVEL now works
30 (thanks to Leslie Polzer)
31 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
32 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
34 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
35 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
36 well as user defined declaration names.
37 ** VARIABLE-INFORMATION is now aware of alien variables.
38 * improvement: improved address space layout on OpenBSD (thanks to Josh
40 * improvement: pretty-printing of various Lisp forms has been improved
41 (thanks to Tobias Rittweiler)
42 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
44 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
45 (thanks to Larry D'Anna)
46 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
47 as well. (reported by Josh Elsasser)
48 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
49 leading to possible attempts to delete the same file twice. See docstring
50 on DELETE-FILE for details. (reported by John Fremlin)
51 * bug fix: the low-level debugger had 32-bit assumptions and was missing
52 information about some array types. (thanks to Luis Oliveira)
53 * bug fix: moderately complex combinations of inline expansions could
54 be miscompiled if the result was declared to be dynamic extent.
55 * bug fix: in some cases no compiler note about failure to stack allocate
56 was emitted, even if the objects were in fact heap allocated.
57 * bug fix: minor violation of "otherwise inaccessible" rule for stack
58 allocation could cause objects users might reasonably expect to
59 be heap allocated to be stack allocated.
60 * bug fix: DESCRIBE signalled an error for generic functions under
61 certain circumstances. (thanks to Leslie Polzer)
62 * bug fix: Fixed spelling of an error message.
64 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
65 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
66 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
67 of SB-THREAD:THREAD-ERROR-THREAD.
68 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
69 * new feature: docstrings for local and anonymous functions are no longer
70 discarded. (thanks to Leslie Polzer)
71 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
72 values in other threads.
73 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
74 about object allocation.
75 * optimization: division of a real float by a complex float is implemented
76 with a specialised code sequence.
77 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
78 keywords is an order of magnitude faster.
79 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
80 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
81 methods, and similarly for non-standard metaclass classes as long as there
82 are no methods additional on MAKE-INSTANCE.
83 * optimization: more efficient type-checks for FIXNUMs when the value
84 is known to be a signed word on x86 and x86-64.
85 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
86 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
88 * optimization: compiler is smarter about delegating argument type checks to
90 * optimization: several character functions are now compiled somewhat more
91 efficiently. (reported by Lynn Quam)
92 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
93 * improvement: less unsafe constant folding in floating point arithmetic,
94 especially for mixed complex/real -float operations.
95 * optimization: constant double and single floats are stored in native
96 unboxed format on x86[-64].
97 * optimization: smarter code for arithmetic operations with constant floats,
98 complex floats, or integers on x86[-64].
99 * optimization: smarter code for conjugate/multiplication of float complexes
100 and abs/negate of floats on x86-64.
101 * optimization: more efficient complex float and real float operations on
103 * improvement: complex float division is slightly more stable.
104 * improvement: DESCRIBE output has been reworked to be easier to read and
105 contains more pertinent information.
106 * improvement: failure to provide requested stack allocation compiler notes
107 provided in all cases (requested stack allocation not happening without a
108 note being issued is now considered a bug.)
109 * bug fix: SB-POSIX exports the documented types and functions
110 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
111 types. (reported by "abhi")
112 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
113 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
114 (thanks to Paul Khuong)
115 * bug fix: looping around HANDLER-CASE could silently consume stack space
116 on each iteration. (reported by "foobar")
117 * bug fix: better error signalling when calls to functions seeking elements
118 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
119 (reported by Tobias Rittweiler)
120 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
121 directory components now works as it used to. (various prolems reported by
122 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
123 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
124 (reported by Elliot Slaughter, thanks to Stas Boukarev)
125 * bug fix: bogus undefined variable warnings from fopcompiled references to
126 global variables. (thanks to Lars Rune Nøstdal)
127 * bug fix: foreign function names should now appear in backtraces on
128 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
129 * bug fix: SETF compiler macro documentation strings are not discarded
131 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
132 (thanks to Alex Plotnick)
133 * bug fix: SLEEP accepts large integer arguments, truncating them to
134 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
135 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
136 * bug fix: compiler notes for expensive slot type checks could be emitted
137 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
139 changes in sbcl-1.0.29 relative to 1.0.28:
140 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
141 https://bugs.launchpad.net/sbcl
142 Bugs can be reported directly there, or by sending email to
143 sbcl-bugs@lists.sourceforge.net
144 (no subscription required.)
145 * minor incompatible change: under weak type checking policy integer
146 types are weakened less aggressively.
147 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
148 allowed to return, which causes SBCL to quit with exit status 0. Previously
149 if the function returned with a small integer return value, that value
150 was accidentally reused as the exit status.
151 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
152 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
153 :HASH-FUNCTION argument. Refer to user manual for details.
154 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
156 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
157 microseconds since the Unix epoch on all platforms.
158 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
159 allows the compiler to safely elide boundedness checks for special
161 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
162 the symbol, prohibits both lexical and dynamic binding. This is mainly an
163 efficiency measure for threaded platforms, but also valueable in
165 * new feature: UNC pathnames are now understood by the system on Windows.
166 * optimization: the compiler uses a specialized version of FILL when the
167 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
169 * optimization: accesses to potentially non-simple arrays where element type
170 is known are 50% faster.
171 * optimization: compiler now generates faster array typechecking code.
172 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
174 * optimization: multidimensional array accesses in the absence of type
175 information regarding array rank are approximately 10% faster due to
176 open coding of ARRAY-RANK.
177 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
178 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
180 * optimization: result of call to VECTOR can now be stack allocated.
181 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
182 as long as the resulting array is one-dimensional and has a known
183 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
184 length of the list matches the known length of the vector does not
185 allocate the list as an intermediate step. Ditto for VECTOR and simple
187 * optimization: MAKE-ARRAY can now stack allocate in the presence of
188 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
189 known element type, and is known to be simple and one dimensional.
190 * improvement: SBCL now emits a compiler note where stack allocation was
191 requested but could not be provided (not in all cases, unfortunately)
192 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
193 * improvement: pretty-printing loop has been implemented properly. (thanks
194 to Tobias Rittweiler)
195 * documentation: CLOS slot typechecing policy has been documented.
196 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
197 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
198 pointer, leading to memory faults. (thanks to Bart Botta)
199 * bug fix: better floating point exception handling on x86/OpenBSD.
200 (thanks to Josh Elsasser)
201 * bug fix: exit status from QUIT when called under --script was lost
202 (reported by Hubert Kauker)
203 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
204 same implementation of FILL to initialize the array, even if a more
205 efficient one was available (reported by Stas Boukarev, thanks to
207 * bug fix: potential miscompilation of array stack allocation on x86 and
208 x86-64. (reported by Time Tossavainen)
209 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
210 result in their subforms being treated as top level forms. (reported by
212 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
213 than a machine register could leave garbage in the high bits of the
214 result register (bug 316325).
215 * bug fix: disable address space randomization Linux/x86-64 as well,
216 not just x86-64. (reported by Ken Olum)
217 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
218 generate incorrect code.
219 * bug fix: #201; type inference for CONS and ARRAY types could derive
220 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
221 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
222 could not be assigned to or bound with PROGV. (reported by Lorenz
224 * bug fix: the value of CL:- in the inspector was the previous expression
225 evaluated rather than the expression being evaluated.
226 * bug fix: constants can no longer be locally declared special.
227 * bug fix: signals delivered to threads started from foreign land (read:
228 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
229 thread by blocking all signals and resignalling.
230 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
231 from :INITFORM, if any.
233 changes in sbcl-1.0.28 relative to 1.0.27:
234 * a number of bugs in cross-compilation have been fixed, with the ultimate
235 result that building under (at least) clisp should be much more reliable.
236 * minor incompatible changes: echo-streams now propagate unread-char to the
237 underlying input stream, and no longer permit unreading more than one
239 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
240 frames, allowing for instance more reliable backtraces.
241 * improvement: the debugger REPL can now reference lexical variables
242 by name directly for code compiled with (DEBUG 3).
243 * improvement: errors from malformed declarations now have better source
244 paths associated with them. (thanks to Tobias Rittweiler)
245 * optimization: faster local calls on x86/x86-64
246 * bug fix: some error messages for out-of-bound array indexes confused the
247 index and the bound. (thanks to Stas Boukarev)
248 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
250 * bug fix: running regressions tests in shells without OSTYPE set now works.
251 (reported by Harald Hanche-Olsen)
252 * bug fix: more robust static space exhaustion signalling from
253 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
254 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
255 docstring away instead of storing it under names such as (LAMBDA (X)).
256 (reported by Leslie Polzer)
257 * bug fix: timers could go off in the wrong order, be delayed indefinitely
258 (thanks to Ole Arndt for the patch)
259 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
260 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
261 potentially-invalid effective methods in its cache.
262 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
263 instances as well (thanks to Paul Khuong)
264 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
265 SB-POSIX:WAITPID and their C equivalents.
266 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
268 changes in sbcl-1.0.27 relative to 1.0.26:
269 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
270 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
271 * improvement: the system either recovers from stack exhaustion or dies
272 properly as opposed to leaving the user uncertain of whether the handler
273 trampled on some random memory next to the stack or having to rely on
274 --lose-on-corruption (which is still a good idea to use in production
275 because stack exhaustion can happen in signal handlers which will likely
277 * bug fix: fix gc related interrupt handling bug on ppc (regression from
278 1.0.25.37, reported by Harald Hanche-Olsen)
279 * bug fix: work around signal delivery bug in darwin (regression from
280 1.0.25.44, reported by Sidney Markowitz)
281 * bug fix: fix ERROR leaking memory (reported by David Thompson)
283 changes in sbcl-1.0.26 relative to 1.0.25:
284 * incompatible change: an interruption (be it a function passed to
285 INTERRUPT-THREAD or a timer function) runs in an environment where
286 interrupts can be enabled. The interruption can use
287 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
288 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
289 potentially running out of stack. Keep in mind that in the absence
290 of WITHOUT-INTERRUPTS some potentially blocking operation such as
291 acquiring a lock can enable interrupts.
292 * incompatible change: GC-OFF and GC-ON are removed, as they were
293 always unsafe. Use WITHOUT-GCING instead.
294 * new feature: runtime option --disable-ldb
295 * new feature: runtime option --lose-on-corruption to die at the
296 slightest hint of possibly non-recoverable errors: running out of
297 memory, stack, alien stack, binding stack, encountering a memory
298 fault, etc. In the absence of --lose-on-corruption a warning is
300 * enhancement: detect binding stack exhaustion
301 * enhancement: detect alien stack exhaustion on x86/x86-64
302 * improvement: generally more stable and reliable interrupt handling
303 * improvement: there is a per thread interruption queue,
304 interruptions are executed in order of arrival
305 * improvement: a repeating timer reschedules itself when the it has
306 finished, but expiration times are spaced equally. If an
307 expiration time is in the past it will trigger after a short grace
308 period that may give a chance to other things to run.
309 * optimization: slightly faster gc on multithreaded builds
310 * optimization: faster WITHOUT-GCING
311 * bug fix: when JOIN-THREAD signals an error, do it when not holding
312 important locks so that the debugger/handler doesn't produce
313 recursive errors or deadlock.
314 * bug fix: real-time signals are not used anymore, so no more
315 hanging when the system wide real-time signal queue gets full.
316 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
318 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
319 * bug fix: fix random memory faults related to interrupts on alpha
320 * bug fix: fix random memory faults related to interrupts on sparc
321 * bug fix: fix deadlocks related to starting threads
322 * bug fix: fix deadlines on locks on futex platforms
323 * bug fix: restore errno in signal handlers
324 * bug fix: fix deadlocks related to hash tables
325 * bug fix: fix deadlocks in pcl
327 changes in sbcl-1.0.25 relative to 1.0.24:
328 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
329 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
330 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
331 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
332 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
333 better name and does not return values so stale on multiprocessor systems.
334 Also, HOLDING-MUTEX-P was added for about the only sane usage of
336 * improvement: unithread builds keep track of MUTEX-VALUE.
337 * improvement: reading from a TWO-WAY-STREAM does not touch the output
338 stream anymore making it thread safe to have a concurrent reader and
339 a writer, for instance, in a pipe.
340 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
341 arguments, making compiler-macros for SETF-functions able to inspect
342 their constant arguments.
343 * improvement: COMPILE-FILE reports times with millisecond accuracy
344 (thanks to Luis Oliveira)
345 * optimization: CHAR-CODE type derivation has been improved, making
346 TYPEP elimination on subtypes of CHARACTER work better. (reported
347 by Tobias Rittweiler, patch by Paul Khuong)
348 * bug fix: setting alien structure fields of type struct by value now
349 computes the right offset for the memory copy.
350 * bug fix: compilation problem involving inlined calls to aliens with
351 result type VOID. (reported by Ken Olum)
352 * bug fix: #235a; sequential inline expasion in different policies no
353 longer reuses the functional from the previous expansion site.
354 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
355 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
356 * bug fix: named ENUMs in multiply-referenced alien record types no longer
357 cause an implied type redefinition. Regression from 1.0.21.29.
358 * bug fix: sign-extension of small signed return values now works with C
359 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
360 * improvements to the Windows port:
361 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
362 Westfold, thanks to Rudi Schlatte)
364 changes in sbcl-1.0.24 relative to 1.0.23:
365 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
366 vector of a multidimensional SIMPLE-ARRAY.
367 * new feature: the system now signals a continuable error if standard
368 readtable modification is attempted. (thanks to Tobias Rittweiler)
369 * new feature: DIRECTORY has been extended with a non-standard keyword
370 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
371 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
372 has been robustified and documented better. (thanks to Robert Goldman)
373 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
374 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
375 * tradeoff: constant FORMAT control strings are now compiled unless
376 SPACE > SPEED (previously only when SPEED > SPACE.)
377 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
379 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
381 * bug fix: lexical type declarations are now correctly reported by
382 SB-CLTL2. (reported by Larry D'Anna)
383 * bug fix: STRING-TO-OCTETS did not handle :START properly when
384 using UTF-8 as external format. (thanks to Luis Oliveira)
385 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
386 are signalled correctly. (thanks to Stas Boukarev)
387 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
388 designator. (thanks to Tobias Rittweiler)
389 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
390 designator, and returns T instead of the function. (thanks to
392 * bug fix: direct superclasses of STANDARD-CLASS and
393 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
394 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
395 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
396 when no class with the named slot yet exists no longer causes a
397 compile-time style-warning.
398 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
399 in safe code. (reported by Didier Verna)
400 * bug fix: #430; nested structure constructors can stack allocate.
401 * bug fix: on some 64-bit platforms dynamic space size was truncated
402 to #xffff0000 bytes. (reported by Benjamin Lambert)
403 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
404 REPL unusable. (reported by Daniel Herring)
405 * bug fix: return values of READ-SEQUENCE did not take :START into
406 account on file streams, regressions since 1.0.12.22. (reported by
407 Thomas Russ, patch by Paul Khuong)
408 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
409 method specializer used to confuse permuation vector optimization.
410 * bug fix: system inserted bogus implicit type declarations for local
411 special variables in DEFMETHOD bodies.
412 * bug fix: #354; duplicated frames in backtraces due to
413 non-tail-call-optimized XEPs to functions with return type NIL
415 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
416 initializes structure object slots according to DEFSTRUCT initforms,
417 and DEFSTRUCT forms :INCLUDEind structure classes defined using
418 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
419 (reported by Bruno Haible and Stephen Wilson)
420 * bug fix: #395; fill-pointer output streams used now support
421 element-type BASE-CHAR as well.
422 * bug fix: compiler error when attempting to derive return value of
423 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
425 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
427 * bug fix: Mac OS X binaries should now be portable between Leopard
430 changes in sbcl-1.0.23 relative to 1.0.22:
431 * enhancement: when disassembling method functions, disassembly
432 for the associated fast function is also produced.
433 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
435 * optimization: printing with *PRINT-PRETTY* true is now more
436 efficient as long as the object being printed doesn't require
437 special handling by the pretty printer.
438 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
439 now interact correctly with type declarations.
440 * partial bug fix: PCL detects infinite recursion during wrapper
441 validation. (thanks to Attila Lendvai)
442 * bug fix: #426; nested function calls are inlined properly.
443 Previously if FOO was an inline function, in calls of the form
444 (FOO (FOO ...)) the outer call was not inlined.
445 * bug fix: long long arguments passed in registers to alien
446 functions on PowerPC Linux and NetBSD are now handled correctly
447 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
449 changes in sbcl-1.0.22 relative to 1.0.21:
450 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
451 for the shared object in the current directory, but passes the native
452 namestring of the designated pathname to the operation system's shared
453 object loading function as-it.
454 * minor incompatible change: --disable-debugger toplevel option now takes
455 effect before processing of initialization files and --eval or --load
457 * new feature: new commandline argument: --script, which supports
458 shebang lines. See documentation for details. (based on work by
460 * new feature: SAVE-LISP-AND-DIE can save current values of
461 --dynamic-space-size and --control-stack-size in the executable core,
462 causing it to skip normal runtime option processing. See documentation
463 for details. (thanks to Zach Beane)
464 * enhancement: inoccous calls to EVAL or generic functions dispatching
465 on subclasses of eg. STREAM no longer cause compiler notes to appear.
466 * enhancement: the system no longer resignals errors from --load and
467 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
468 associated with the original error to be lost. (thanks to Ariel
470 * enhancement: :DONT-SAVE keyword argument has been added to
471 LOAD-SHARED-OBJECT for controlling interaction with
472 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
473 the effects of an earlier LOAD-SHARED-OBJECT call.
474 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
475 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
476 provided. (reported by Cedric St-Jean)
477 * bug fix: circularity handling in the reader did not treat raw
478 structure slots correctly. (reported by Cedric St-Jean)
479 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
480 file descriptors when there were none.
481 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
482 was broken. (reporteed by Willem Broekema)
483 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
484 pathnames without a directory.
485 * bug fix: COMPILE-FILE did not warn about undefined variable
486 references at toplevel, and LOAD of the resulting fasl did
488 * bug fix: functions with non-required arguments used to end up with
489 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
490 * bug fix: redefining a function with non-required arguments didn't
491 update the system's knowledge about its call signature properly.
492 * bug fix: fixed #431; incompatible alien record type redefinitions
493 are detected and handled. (reported by Neil Haven)
494 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
495 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
497 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
498 after alien stack frames.
499 * bug fix: strings passed to mk{s,d}temp lacked null termination
501 changes in sbcl-1.0.21 relative to 1.0.20:
502 * new feature: the compiler is able to track the effective type of a
503 generic function across method addition and removal.
504 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
505 appropriately typed structure slots without locking.
506 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
507 information like those gathered by TIME using a programming-friendly
509 * new feature: TIME reports time taken even if the form performs a
510 non-local transfer of control.
511 * enhancement: reduced conservativism on GENCGC platforms: on
512 average 45% less pages pinned (measured from SBCL self build).
513 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
514 mutate constant symbols or violate declaimed type of the symbol.
515 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
516 sleeping on the semaphore in heavily contested semaphores.
517 * bug fix: semaphores and condition variables were not interrupt
519 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
520 owned by other threads anymore.
521 * bug fix: FIND on lists called KEY outside the specified
522 subsequence. (reported by budden)
523 * bug fix: LOG doesn't use single-float intermediate results when
524 given mixed integer and double-float arguments, leading to better
525 precision. (reported by Bob Felts)
526 * bug fix: LOG with base zero returned values of inconsistent type.
528 changes in sbcl-1.0.20 relative to 1.0.19:
529 * minor incompatible change: OPTIMIZE qualities
530 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
531 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
532 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
533 * documentation: some slot access efficiency guidelines have been
534 added to the user manual.
535 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
536 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
537 as ASSOC and MEMEBER.
538 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
539 to more efficient EQ-comparison versions more often.
540 * optimization: enhanced derivation of DOLIST iteration variable type
542 * optimization: constant folding of simple (LIST ...) forms as DOLIST
544 * optimization: runtime lookup of function definitions can be
545 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
546 * optimization: compiler is able to derive the return type of
547 (AREF (THE STRING X) Y) as being CHARACTER.
548 * optimization: CLRHASH on empty hash-tables no longer does pointless
549 work. (thanks to Alec Berryman)
550 * optimization: REPLACE deftransforms don't punt when :START1 or
552 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
553 no longer emits a code deletion note. (reported by Andrew
555 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
556 functions with an odd number of &OPTIONAL arguments, a &REST
557 argument, and one or more &KEY arguments at the call site.
558 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
559 arguments appeared at call sites as well.
560 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
561 READ-LINE &co can no longer read from them afterwards. (reported
563 * bug fix: fixed #427: unused local aliens no longer cause compiler
564 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
566 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
567 alien-stack leakage. (reported by Andy Hefner)
568 * bug fix: PROGV signals an error when an attempt to violate declared
569 type of a variable or bind a constant is made.
570 * bug fix: SET signals an error when an attempt to violate declared
571 type of a variable is made.
572 * bug fix: restart computation during the execution of a restart
573 test function no longer causes infinite recursion. (reported by
575 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
576 signals an error. (thanks to Pierre Mai)
577 * bug fix: EXPORT left symbol unexported in conflict situations.
578 (thanks to Michael Weber)
579 * bug fix: correctly handle name conflicts involving CL:NIL.
580 (thanks to Michael Weber)
581 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
582 conflicts arising from USEing package with conflicting symbols
583 correctly. (thanks to Michael Weber)
585 changes in sbcl-1.0.19 relative to 1.0.18:
586 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
587 warnings that go otherwise unhandled will be muffled if they are
588 of the type that's the value of this variable.
589 * optimization: stack allocation is slightly more efficient on x86
591 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
592 where a raw slot always is initialized using the initform whose
593 type is not know sufficiently well a compile-time are now compiled
594 correctly. (reported by John Morrison)
595 * bug fix: compiler no longer makes erronous assumptions in the
596 presence of non-foldable SATISFIES types.
597 * bug fix: stack analysis missed cleanups of dynamic-extent
598 arguments in non-let-converted calls to local functions.
599 * improvements to the Windows port:
600 ** adjusted address spaces for building on both Win32 and
601 Win64. (thanks for John Connors)
602 * fixed some bugs revealed by Paul Dietz' test suite:
603 ** interval arithmetic during type derivation used inexact integer
604 to single-float coercions.
605 ** arithmetic operations involving large integers and single
606 floats give the same results in compiled and interpreted code.
607 ** deriving the result type of COERCE no longer signals an error
608 if the derived type of the second argument is a MEMBER type
609 containing invalid type specifiers.
610 ** ADJOIN with constant NIL as second argument works correctly.
611 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
613 changes in sbcl-1.0.18 relative to 1.0.17:
614 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
615 profiles only the current thread.
616 * minor incompatible change: changes to SYMBOL-VALUE of constants
617 defined with DEFCONSTANT now signal an error.
618 * enhancement: SB-SPROF now has support for wallclock profiling,
619 and is also able to profile specific threads. REPORT output
620 has also additional sorting options.
621 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
623 * optimization: structure allocation has been improved
624 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
625 ** out of line constructors are ~10% faster.
626 ** inline constructors are ~15% faster.
627 ** inline constructors are capable of dynamic extent allocation
628 (generally on x86 and x86-64, in some cases on other platforms
630 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
632 * optimization: file compiler is now able to coalesce non-circular
633 lists, non-base strings, and bit-vectors. Additionally, constants
634 are never referenced through SYMBOL-VALUE at runtime.
635 * optimization: code defining methods on PRINT-OBJECT (and other
636 generic functions in the COMMON-LISP package) now loads faster.
637 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
639 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
640 fasl is now deleted. (reported by Attila Lendvai)
641 * bug fix: READ-LINE always returned NIL for the last line in files.
642 (reported by Yoshinori Tahara)
643 * bug fix: more accurate disassembly annotations of foreign function
644 calls. (thanks to Andy Hefner)
645 * bug fix: trimming non-simple strings and non-string string
646 designators when the there is nothing to trim works properly.
647 (thanks to James Knight)
648 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
649 (thanks to Travis Cross)
650 * fixed some bugs revealed by Paul Dietz' test suite:
651 ** NIL is a valid function name (regression at 1.0.13.38)
652 ** FILL on lists was missing its return value (regression at 1.0.12.27)
653 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
654 fill pointers properly (regression at 1.0.12.23)
655 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
656 displacement indices properly (regression at 1.0.12.23)
658 changes in sbcl-1.0.17 relative to 1.0.16:
659 * temporary regression: user code can no longer allocate closure
660 variable storage on stack, due to bug 419 without explicitly
661 requesting it. Please consult sbcl-devel for advice if you need to
662 use this feature in the meanwhile.
663 * new feature: runtime argument --control-stack-size can be used to
664 adjust thread default control stack size.
665 * enhancement: improved TIME output
666 ** all times are reported using the measured accuracy (milliseconds
667 for real and GC times, microseconds for everything else.)
668 ** processor cycle counts on x86 and x86-64.
669 ** interpreted forms are counted for both evaluator modes.
670 ** number of lambdas converted by the compiler is reported.
671 ** CPU percentage report (computed from real and total run time.)
672 ** more comprehensive run time reporting, using a condenced format
673 ** interperted form, lambda, and page fault counts are omitted
675 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
677 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
678 * optimization: two argument forms of LAST are upto ~10% faster
679 in normal SPEED policies.
680 * optimization: NCONC no longer needs to heap cons its &REST list
681 in normal SPEED policies.
682 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
684 * bug fix: UNION and NUNION work with :TEST-NOT once more,
685 regression since 1.0.9.1. (thanks to Eric Marsden)
686 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
687 since 1.0.15.36. (thanks to Paul Khuong)
688 * bug fix: LAST when always returned the whole list when given a bignum
689 as the second argument.
690 * bug fix: dynamic extent allocation of nested lists and vectors
691 could leak to otherwise accessible parts.
692 * bug fix: invalid optimization of heap-allocated alien variable
694 * bug fix: fasl header checking is less vulnerable to different
695 platform word lengths.
696 * bug fix: more correct assembler syntax for GNU binutils
697 2.18.50.0.4 support. (thanks to Marijn Schouten)
698 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
700 * bug fix: the fopcompiler can handle LOCALLY forms (with no
701 declarations) successfully. (reported by Attila Lendvai)
703 changes in sbcl-1.0.16 relative to 1.0.15:
704 * minor incompatible change: revert the changes to sb-posix's error
705 signaling added in 1.0.14.
706 * minor incompatible change: change PROBE-FILE back to returning
707 NIL whenever we can't get a truename, as was the case before 1.0.14.
708 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
709 inherits from ERROR instead of just CONDITION.
710 * new feature: SB-INTROSPECT can provide source locations for instances
711 as well. (thanks to Tobias Rittweiler)
712 * optimization: binding special variables now generates smaller code
713 on threaded platforms.
714 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
715 and cases where no :TEST is given but the compiler can infer that
716 the element to search is of type (OR FIXNUM (NOT NUMBER)).
717 * optimization: better LOGNOT on fixnums.
718 * optimization: modular arithmetic for a particular requested width
719 is implemented using a tagged representation unless a better
720 representation is available.
721 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
722 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
723 for wellformedness and returns a specialized vector. (reported by
724 Francois-Rene Rideau)
725 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
726 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
727 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
728 unscheduling timer at the same time as another timer fires.
729 * bug fix: don't reschedule timers for dead threads.
730 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
731 * bug fix: copying output from RUN-PROGRAM to a stream signalled
732 bogus errors if select() was interrupted.
733 * enhancement: add support for fcntl's struct flock to SB-POSIX.
735 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
736 * enhancement: cleaner backtraces for interactive interrupts, as
737 well as other cases where the interesting frames used to be
738 obscured by interrupt handling frames.
739 * enhancement: untracing a whole package using (UNTRACE "FOO") is
740 now supported, and tracing a whole package using (TRACE "FOO") now
741 traces SETF-functions as well.
742 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
743 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
744 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
745 * unreadably printed representation of hash-tables now includes
747 * bug fix: partially fixed #188: type propagation from assignments
748 is now more efficient.
749 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
750 'DOUBLE-FLOAT) are not flushable.
751 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
752 full address of the object, and none of the tag bits.
753 * bug fix: readably printing hash-tables now respects other printer
754 control variables. (reported by Cedric St-Jean)
755 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
756 keyword with MAKE-HASH-TABLE.
757 * bug fix: export SB-POSIX:MKSTEMP.
758 * bug fix: SORT was not interrupt safe.
759 * bug fix: XREF accounts for the last node of each basic-block as
761 * bug fix: MAKE-INSTANCE optimizations interacted badly with
762 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
763 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
764 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
765 create obsolete instances in the case of redefinition or
766 obsoletion of a superclass. (thanks to Andy Hefner)
767 * bug fix: Support for the Alpha architecture has been revived; it had
768 suffered somewhat from lack of maintenance since sbcl-1.0.
769 * improvements to the Windows port:
770 ** The system detects the codepage to use at startup, instead of
771 using the value from the saved core. (thanks to Kei Suzuki)
773 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
774 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
775 (see documentation for details.)
776 * revived support for OpenBSD (contributed by Josh Elsasser)
777 * partially fixed bug #108: ROOM no longer suffers from occasional
778 (AVER (SAP= CURRENT END)) failures.
779 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
780 bodies no longer cause a WARNING to be signalled. (reported by
782 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
783 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
784 the bug in TRUNCATE.) (reported by Michael Weber)
785 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
786 no samples. (reported by Andy Hefner)
787 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
788 no longer appear as (NIL ...) frames in backtraces.
789 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
790 is now actually exported from SB-EXT as documented. (reported by
792 * bug fix: sb-aclrepl now correctly understands how to inspect
793 single-floats on 64-bit platforms where single-floats are not boxed.
794 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
795 yet been finalized. (reported by Levente Meszaros)
796 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
797 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
798 SBCL-specific optimize qualities.
800 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
801 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
802 an executable in the search path, and does so in the child
803 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
804 been removed; it can be found in the CVS history, for somebody who
805 needs that search behavior (see the manual).
806 * minor incompatible change: compiler policy re. weakening type
807 checks has changed: now type checks are weakened only if SAFETY < 2
809 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
810 unparsing of directory pathnames as files. Analogously,
811 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
812 filename to parse into a directory pathname.
813 * enhancement: implicit generic function creation now signals a
814 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
815 users can bind handlers for and muffle around calls to LOAD.
816 * enhancement: RUN-PROGRAM allows unicode arguments and environments
817 to be used (using the default stream external format), and allows
818 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
819 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
820 strings and vectors whose element-type or simplicity is not fully
821 known at compile-time.
822 * optimization: STRING-TRIM and related functions no longer allocate
823 a new string when no trimming needs to be performed. These functions
824 are also faster than before when the input string has been declared
826 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
827 * optimization: READ-LINE is significantly faster for files containing
829 * optimization: non-open coded uses of character comparison operators
830 (e.g. char=) no longer cons when called with more than one parameter
831 on platforms supporting dynamic-extent allocation.
832 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
833 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
834 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
836 * bug fix: some sequence functions elided bounds checking when
838 * bug fix: too liberal weakening of union-type checks when SPEED >
840 * bug fix: more bogus fixnum declarations in ROOM implementation
843 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
844 * new feature: MAKE-HASH-TABLE now experimentally accepts a
845 :SYNCHRONIZED argument, which makes the hash-table safe for
846 concurrent accesses (but not iteration.) See also:
847 SB-EXT:WITH-LOCKED-HASH-TABLE, and
848 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
849 * optimization: CONCATENATE on strings is an order of magnitude faster
850 in code compiled with (> SPEED SPACE).
851 * optimization: SUBSEQ is ~50% faster on lists.
852 * bug fix: bug 417 fixed -- source location reporting is now more robust.
853 * bug fix: SUBSEQ on a list will now correctly signal an error if if
854 END is smaller then START.
855 * bug fix: SB-PROFILE will no longer report extra consing for nested
856 calls to profiled functions.
857 * bug fix: ROOM implementation had bogus fixnum declarations which
858 could cause type-errors when calling ROOM on large images.
859 * bug fix: if file compilation is aborted, the partial fasl is now
860 deleted, and COMPILE-FILE returns NIL as the primary value.
861 * bug fix: number of thread safety issues relating to SBCL's internal
862 hash-table usage have been fixed.
863 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
864 be returned from its body when the values were being returned
865 using unknown-values return convection and the W-P-O was wrapped
866 inside an UNWIND-PROTECT.
867 * bug fix: sb-posix should now compile again under Windows, enabling
870 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
871 * incompatible change: hash-table accessor functions are no longer
872 automatically protected by locks. Concurrent accesses on the same hash-table
873 from multiple threads can give inconsistent results or even corrupt the
874 hash-table completely. Multi-threaded applications should do their own
875 locking at the correct granularity. In the current implementation it is
876 still safe to have multiple readers access the same table, but it's not
877 guaranteed that this property will be maintained in future releases.
878 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
879 and will signal an error at runtime.
880 * enhancement: SB-THREAD package now exports a semaphore interface.
881 * enhancement: CONS can now stack-allocate on x86 and
882 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
884 * enhancement: nested lists can now be stack allocated on
885 platforms providing stack allocation support.
886 * enhancement: dynamic-extent support has been extended to support
887 cases where there are multiple possible sources for the stack
889 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
890 if the mutex is uncontested on Linux.
891 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
892 as specified by the CLHS. (thanks to Tobias Rittweiler)
893 * bug fix: NaN comparison now works on x86-64.
894 * bug fix: CLOSE :ABORT T on a stream with pending output now
896 * bug fix: instances of non-standard metaclasses using standard
897 instance structure protocol sometimes missed the slot type checks
899 * bug fix: known functions can be inlined in high-debug code.
901 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
902 * minor incompatible change: the MSI installer on Windows no longer
903 associates .lisp and .fasl files with the installed SBCL.
904 * minor incompatible change: :UNIX is no longer present in *FEATURES*
905 on Windows. (thanks to Luis Oliviera)
906 * new feature: SB-CLTL2 contrib module now implements
907 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
908 * optimization: scavenging weak pointers is now more efficient,
909 requiring O(1) instead of O(N) per weak pointer to identify
910 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
911 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
912 method bodies using constant slot-names when the first argument is
913 a specializer parameter for the method.
914 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
915 names, when the class of the instance is a direct instance
916 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
917 as slow as the constant slot-name case.)
918 * optimization: member type construction is now O(N) instead
920 * optimization: UNION and NUNION are now O(N+M) for large
921 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
923 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
924 now more readable in environments like Slime which display it.
925 (thanks to Tobias C. Rittweiler)
926 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
927 was able to infer the correct argument type for the object on which
928 the CAS operation was being performed.
929 * bug fix: copy propagation interfered with parallel assignment
930 semantics in local calls. (reported by Paul Khuong)
931 * bug fix: the signed modular fixnum shift compiled to wrong code on
932 x86 and x86-64. (spotted by a slight modification to some of
935 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
936 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
937 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
938 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
940 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
941 and generic function now print the object identity for anonymous
942 instances. (thanks to Attila Lendvai)
943 * enhancement: as an extension to MOP, SBCL now supports SETF of
944 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
945 (thanks to Attila Lendvai)
946 * enhancement: sb-cover has an alternate annotation mode which puts
947 the form annotations at the car of the form, instead of annotating
948 it completely. The benefit of this mode is that it shows better
949 which forms were instrumented by the compiler.
950 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
951 by printer control variables. (reported by Dan Corkill)
952 * bug fix: system leaked memory when delayed output was performed by
953 the OS in smaller chunks then expected. (thanks to David Smith)
954 * bug fix: system leaked memory when file streams were not closed
956 * bug fix: large objects written to slow streams that were modified
957 after the write could end up with the modified state written to
958 the underlying file descriptor.
959 * bug fix: multiple threads operating in parallel on the same stream
960 could cause buffer-overflows.
961 * bug fix: source location information is stored correctly
962 (broken since 1.0.6). This bug would generally show up as the
963 Slime debugger highlighting the wrong form when the sldb-show-source
965 * bug fix: Branch forms are again annotated as branches in the sb-cover
967 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
968 on x86-64. (reported by Gregory Vanuxem)
969 * bug fix: EQUALP could return wrong results for structures with raw
970 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
971 word). (reported by Vjacheslav Fyodorov)
972 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
975 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
976 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
977 atomic compare-and-swap operations on threaded platforms.
978 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
979 allows assigning a global minimum value to optimization qualities
980 (overriding proclamations and declarations).
981 * enhancement: closed over variables can be stack-allocated on x86
983 * performance bug fix: GETHASH and (SETF GETHASH) are once again
985 * optimization: slot definition lookup is now O(1). This speeds up
986 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
987 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
988 * optimization: ASSOC and MEMBER can now be open-coded for all
989 combinations of keyword arguments when second argument is constant
990 and SPEED >= SPACE. In other cases a specialized version is
992 * bug fix: using obsoleted structure instances with TYPEP and
993 generic functions now signals a sensible error.
994 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
995 (reported by Kristoffer Kvello)
996 * bug fix: backtrace construction is now more careful when making
997 lisp-objects from pointers on the stack, to avoid creating bogus
998 objects that can be seen by the GC.
999 * bug fix: defaulting of values in contexts expecting more than 7
1000 variables now works on x86-64. (reported by Christopher Laux)
1001 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1003 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1004 as the property-list of a symbol.
1005 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1006 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1007 situations requested, are once again file-compileable. (reported
1010 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1011 * MOP improvement: support for user-defined subclasses of
1012 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1013 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1014 the expansion of DEFMETHOD, is responsible for generating a form
1015 which creates a list of specializers when evaluated. Additional
1016 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1017 debugging and introspective support.
1018 * minor incompatible change: the (unsupported) spinlock interface
1019 has changed: free spinlock now has the value NIL, and a held spinlock
1020 has the owning thread as its value.
1021 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1022 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1024 * enhancement: name of a socket-stream is now "a socket" instead of
1025 "a constant string".
1026 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1027 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1028 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1029 for generic functions. (Thanks to Tobias C. Rittweiler)
1030 * optimization: bignum printing speed has been improved by 20-40%
1031 (depending on the bignum size.)
1032 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1034 * bug fix: the cache used by the CLOS to store precomputed effective
1035 methods, slot offsets, and constant return values is now thread and
1037 * bug fix: generic function dispatch function updating is now thread
1038 and interrupt safe (in the sense that the known issues have been
1040 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1041 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1042 * bug fix: asdf systems with dependencies to the SB-POSIX or
1043 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1044 * bug fix: interrupt safety of applicable method computation has been
1047 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1048 * new contrib: sb-cover, an experimental code coverage tool, is included
1049 as a contrib module.
1050 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1051 significantly faster.
1052 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1053 produce more efficient code on x86-64 if the compiler can determine
1054 that (+ INDEX <constant>) does not require a bounds check and FOO
1055 has an element type at least 8 bits wide.
1056 * enhancement: a new, experimental synchronous timeout facility is
1057 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1058 * enhancement: when a symbol name conflict error arises, the
1059 conflicting symbols are always printed with a package prefix.
1060 (thanks to Kevin Reid)
1061 * enhancement: stepping is now once again supported on the SPARC and
1062 MIPS platforms. (It is also now more likely to work on CheneyGC
1064 * enhancement: sb-sprof can now also track and report accurate call
1066 * bug fixes: the treatment of non-standard subclasses of
1067 SB-MOP:SPECIALIZER is more correct.
1068 * incompatible change: PURIFY no longer copies the data from the
1069 dynamic space into the static and read-only spaces on platforms
1070 that use the generational garbage collector
1071 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1073 * bug fix: GC race condition occasionally resulting in crashes with
1074 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1076 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1078 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1079 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1080 * bug fix: an asynchronous interrupt could previously leave the
1081 system running with GC inhibited.
1082 * bug fix: a DECLARE form evaluated at top-level now causes an error
1083 rather than silently (or verbosely) returning NIL.
1084 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1085 result in a error being signalled due to source form lookup errors.
1086 (reported by Peter Graves)
1088 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1089 * incompatible change: removed writer methods for host-ent-name,
1090 host-ent-addresses -- changing the values did not update the DNS
1092 * minor incompatible change: changed experimental JOIN-THREAD interface
1093 * documentation: the manual now lists reader and writer methods
1094 in class slot documentation sections. (thanks to Richard M Kreuter)
1095 * documentation: unwinding from asyncronous events has been
1096 documented as unsafe.
1097 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1098 in multithreaded application code.
1099 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1100 platforms. (thanks to James Anderson for the optimization hint)
1101 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1103 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1104 variants no longer cons.
1105 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1106 their NOT- variants no longer cons.
1107 * optimization: EQUAL hash tables no longer use SXHASH for objects
1108 of all data types, but instead use an EQL hash for types for which
1109 EQUAL is the same as EQL.
1110 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1111 are significantly faster.
1112 * optimization: new STRING-OUTPUT-STREAM implementation is much
1113 faster for large outputs and conses 30% less on average.
1114 * enhancement: XREF information is now collected for references made
1115 to global variables using SYMBOL-VALUE and a constant argument.
1116 * enhancement: SIGINT now causes a specific condition
1117 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1118 * bug fix: FILE-POSITION used to signal an error in some cases where
1119 ANSI requires it to return NIL.
1120 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1121 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1122 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1124 * bug fix: bad type declaration in the CLOS implementation has
1125 been fixed. (reported by James Anderson)
1126 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1127 (thanks to Lutz Euler)
1128 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1129 required by the CLHS. (reported by Samium Gromoff)
1130 * bug fix: dead unbound variable references now signal an error.
1131 (reported by Marco Monteiro)
1132 * bug fix: / with an unused value was being deleted in safe code.
1133 (thanks to Marco Monteiro and Kevin Reid)
1134 * bug fix: number of characters that can be written onto a single
1135 line in a file is unlimited.
1136 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1137 been fixed by inhibiting interrupts for when GC is disabled.
1138 * bug fix: some interrupt safety issues with GETHASH, (SETF
1139 GETHASH), CLRHASH and REMHASH have been fixed.
1140 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1141 specifier no longer causes infinite recursion.
1142 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1143 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1144 * bug fix: an &environment argument with the correct variable information
1145 is passed to macros that are expanded during byte compilation.
1146 (reported by Samium Gromoff)
1147 * bug fix: a logic error was causing the hash function for bignums to
1148 have excessive amounts of collisions. (reported by Faré Rideau)
1149 * bug fix: modifying the contents of an array could change the return
1150 value of SXHASH on that array, which is only allowed for strings
1151 and bit vectors. (bug introduced in 0.9.16)
1152 * improvement: the x86-64/darwin port now passes all tests (except
1153 for the debugger tests) but should still be considered
1154 experimental until this is fixed.
1155 * improvement: a style-warning is signaled for CASE (etc) clauses with
1156 duplicate keys. (thanks to Kevin Reid)
1157 * improvement: macos/x86 and macos/x86-64 now use mach exception
1158 handlers for dealing with illegal instructions (for trapping and
1159 error handling) and memory protection violations (for GC).
1161 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1162 * new platform: experimental support for x86-64/darwin (MacOS).
1163 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1164 and getnameinfo sockets functions are used instead of gethostbyaddr
1165 and gethostbyname, on platforms where the newer functions are available.
1166 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1168 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1169 don't print the startup banner, but behave as if --noinform was passed
1170 as a command line argument. (thanks to Kevin Reid)
1171 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1172 * optimization: code using alien values with undeclared types is much faster.
1173 * optimization: the compiler is now able to open code SEARCH in more cases.
1174 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1175 * bug fix: using standardized COMMON-LISP special variables as loop
1176 variables no longer signals bogus package lock violations. (reported
1178 * bug fix: declaring local loop variables to be of a range-limited type
1179 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1180 (reported by Andras Simon)
1181 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1182 bugs remain on x86-64.)
1183 * bug fix: the #= and ## reader macros now interact reasonably with
1184 funcallable instances.
1185 * bug fix: type-checks for function arguments were compiled using the
1186 compiler policy settings of the wrong lexical environment (in 1.0.2
1188 * bug fix: SHADOW accepts characters as string designators, as required
1189 by the spec (thanks to Eric Marsden)
1190 * bug fix: fixed GC safety issues when foreign functions are called with
1191 non-base strings as arguments
1192 * bug fix: more consistent error output for fatal-compiler-warnings, like
1194 * bug fix: functions with proper names were showing up as NIL in
1195 backtraces (reported by Edi Weitz, regression in 1.0.2)
1197 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1198 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1199 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1200 produce more efficient code on the x86 if the compiler can determine
1201 that (+ INDEX <constant>) does not require a bounds check and FOO
1202 has an element type at least 8 bits wide.
1203 * bug fix: references to undefined variables are handled the same way
1204 in toplevel forms as in the normal compiler
1205 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1207 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1208 (thanks to Jon Buller)
1209 * improvement: faster compilation times for complex functions
1210 * improvement: added readlink support to SB-POSIX (thanks to Richard
1213 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1214 * improvement: experimental support for mach exception handling on
1215 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1217 * improvement: support for GBK external format.
1218 (thanks to Chun Tian (binghe))
1219 * improvement: the debugger now displays variables that have been closed
1220 over, in code compiled with (DEBUG 2) or higher
1221 * improvement: support for executable cores on NetBSD (thanks to
1223 * new feature: added a RESTART-FRAME debugger command
1224 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1225 be used to provide an implementation for FILE-POSITION on Gray streams
1226 (thanks to Eric Marsden)
1227 * new feature: add syslog, openlog and closelog support to SB-POSIX
1228 (thanks to Richard Kreuter)
1229 * optimization: the function call overhead in code compiled with
1230 a high DEBUG optimization setting is significantly
1231 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1232 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1233 (thanks to Tony Martinez)
1234 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1235 evaluated once (reported by Kevin Reid)
1236 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1237 works again (thanks to Kilian Sprotte)
1238 * bug fix: an error is signaled for tagbodies with duplicate tags
1239 (thanks to Stephen Wilson)
1240 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1241 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1242 stack frames from alien callbacks.
1243 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1244 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1245 65k pages (thanks to David Woodhouse)
1246 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1248 changes in sbcl-1.0.1 relative to sbcl-1.0:
1249 * new platform: FreeBSD/x86-64, including support for threading.
1250 * new feature: the compiler stores cross-referencing information
1251 about function calls (who-calls), macroexpansion (who-macroexpands)
1252 and special variables (who-binds, who-sets, who-references) for code
1253 compiled with (< SPACE 3). This information is available through the
1254 sb-introspect contrib.
1255 * new feature: users may subclass SEQUENCE, and have instances of
1256 these classes interoperate with standard Common Lisp functions if
1257 a number of methods are defined. (This feature is experimental
1258 and the interface subject to change based on feedback from SBCL
1259 users and the general community)
1260 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1261 x86/x86-64, rather than the previous fixed depth of 8
1262 * improvement: another pthread back-end of mutex "pthread-futex".
1263 * bug fix: non-ascii command-line arguments are processed correctly
1264 (thanks to Yaroslav Kavenchuk)
1265 * bug fix: non-required arguments were not passed correctly when a method
1266 defined using DEFMETHOD was called from a mop-generated method using
1267 CALL-NEXT-METHOD (reported by Pascal Costanza)
1268 * bug fix: recursion is now permitted in accessors through
1269 SLOT-UNBOUND. (reported by Pascal Costanza)
1270 * bug fix: an error was signaled at startup if the HOME environment
1271 variable was defined, but had an empty value (reported by Peter Van Eynde)
1272 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1273 signal a PROGRAM-ERROR, not a BUG.
1274 * bug fix: SB-POSIX:READDIR works when built with large file support.
1275 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1277 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1278 for better automatic indentation support. (thanks to Matt Pillsbury)
1279 * optimization: loading generic functions no longer takes O(n^2) time,
1280 proportional to the amount of methods in the generic function
1281 (reported by Todd Sabin and Jeremy Brown)
1282 * optimization: the FIND and POSITION family of sequence functions
1283 are significantly faster on arrays whose element types have been
1285 * improvements to the Windows port:
1286 ** Intermittent heap corruption problems have been fixed. (thanks
1287 to Alastair Bridgewater)
1288 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1290 ** Lisp is able to unwind foreign exception frames from alien
1291 callbacks. (thanks to Alastair Bridgewater)
1293 changes in sbcl-1.0 relative to sbcl-0.9.18:
1294 * improvement: experimental support for threading on FreeBSD/x86.
1295 (thanks to NIIMI Satoshi)
1296 * improvement: runtime option --dynamic-space-size can be used
1297 to set the size of the dynamic space reserved on startup.
1298 * improvement: floating point modes in effect are now saved in
1299 core, and restored on startup.
1300 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1301 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1302 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1303 threads are not running after *SAVE-HOOKS* have run.
1304 * improvement: writes to CLOS instance slots are type-checked in code
1305 compiled with (SAFETY 3)
1306 * improvement: floating-point exception handling on FreeBSD (thanks to
1308 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1309 (thanks to Zach Beane)
1310 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1312 * improvement: added support for the Shift-JIS external format.
1313 (contributed by NIIMI Satoshi)
1314 * improvement: callbacks are supported on Linux/PPC. (thanks to
1316 * bug fix: compiler bug triggered by a (non-standard) VALUES
1317 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1318 * bug fix: file compiler no longer confuses validated and already
1319 dumped structurres. (reported by Kaersten Poeck)
1320 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1321 fill-pointer signals a type-error as required. (thanks to
1323 * bug fix: disassemly of funcallable instances works.
1324 * bug fix: single stepping on PPC.
1325 * bug fix: fix thread-safety problems in the type system (generally
1326 manifesting as nonsensical errors like "STRING is a bad type specifier
1327 for sequences" or "The value 1 is not of type FIXNUM")
1328 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1329 (reported by Josip Gracin)
1330 * bug fix: an error is signaled for attempts to displace arrays with
1331 incompatible element types (thanks to Mario Mommer)
1332 * bug fix: more correct handling of wide characters in debug info
1333 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1334 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1335 and don't cause extra consing
1336 * optimization: MAP and MAP-INTO are significantly faster on vectors
1337 whose elements types have been declared.
1338 * Improvements to SB-SPROF:
1339 ** Support for allocation profiling
1340 ** Reduced profiling overhead, especially for long profiling runs
1341 * Improvements to the Windows port:
1342 ** floating point exceptions are now reported correctly.
1343 ** stack exhaustion detection works partially.
1344 ** more accurate GET-INTERNAL-REAL-TIME.
1345 ** better RUN-PROGRAM behaviour in case of errors in the child
1347 ** PROBE-FILE now simplifies pathnames correctly.
1348 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1349 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1350 1st 1970 (although time timezone data will be unreliable).
1351 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1353 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1354 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1355 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1357 * bug fix: two potential GC deadlocks affecting threaded builds.
1358 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1359 returns T (reported by Anton Kazennikov)
1360 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1361 with non-variable places
1362 * bug fix: remove a race condition in the setting of
1363 funcallable-instance functions, this should make threaded CLOS
1364 code more stable against memory faults.
1365 * bug fix: corruption of specials when unbinding is interrupted by an
1366 asynchronous unwind (reported by Hannu Koivisto)
1367 * improvement: the debugger will now also display local variables that
1368 are only used once, for code compiled with a DEBUG optimization quality
1371 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1372 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1373 * incompatible change: External-format support for FFI calls. The
1374 SB-ALIEN:C-STRING no longer implies an ASCII
1375 external-format. Instead the string is subject to external-format
1376 conversion. Additionally return values of type SB-ALIEN:C-STRING
1377 are by default of type (SIMPLE-ARRAY CHARACTER), not
1378 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1379 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1380 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1381 * incompatible change: SB-EXT package no longer contains the
1382 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1383 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1385 * incompatible change: the single-stepper is no longer available
1386 on Alpha, Mips and Sparc platforms.
1387 * minor incompatible change: the direct superclasses of
1388 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1389 not (STANDARD-OBJECT FUNCTION). This makes the
1390 class-precedence-lists of GENERIC-FUNCTION and
1391 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1393 * minor incompatible change: the default stream external format on
1394 non-unicode SBCL is no longer detected from the locale, but is always
1396 * new feature: Add a version of evaluator that uses an interpreter instead
1397 of the compiler. EVAL still uses the compiler by default, to switch it
1398 to use the interpreter, set the value of the variable
1399 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1400 * minor incompatible change: the single-stepper REPL has been merged
1401 with the normal debugger (see the "Stepping" heading of the debugger help
1402 for more details). The debugger command STEP will no longer switch
1403 to the single-stepper REPL.
1404 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1405 for a type now works.
1406 * bug fix: loading of default sysinit file works. (thanks to Leonid
1408 * bug fix: better detection of circularities in the file-compiler.
1409 (reported by Marco Monteiro)
1410 * bug fix: the CL pathname functions now work with files that have
1411 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1412 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1413 systems with Unix98 pty semantics.
1414 * bug fix: ASDF-INSTALL will now work with bsd tar.
1415 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1417 * bug fix: timers expiring in dead threads no longer cause a
1418 type-error (reported by Paul "Nonny Mouse").
1419 * bug fix: thanks to more lightweight single-stepper instrumentation,
1420 code compiled with (DEBUG 3) will compile and execute significantly faster,
1421 and will have more accurate type-inferencing than before
1422 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1423 whose bindings are modified
1424 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1425 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1426 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1427 CL:SOFTWARE-VERSION with proper version
1429 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1430 * feature: implemented the READER-METHOD-CLASS and
1431 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1432 as specified by AMOP.
1433 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1435 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1436 (thanks to Lutz Euler)
1437 * optimization: hashing of general arrays and vectors has been
1438 improved. (reported by Any Fingerhut)
1439 * enhancement: SB-INTROSPECT is now able to find definitions of
1440 profiled functions. (thanks to Troels Henriksen)
1441 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1442 as well, allowing compiler-macros for SETF-functions to expand.
1443 * enhancement: step-instrumentation no longer wraps known
1444 single-value functions with multiple-value context, allowing
1445 better type inference.
1446 * fixed bug #337: use of MAKE-METHOD in method combination now works
1447 even in the presence of user-defined method classes. (reported by
1448 Bruno Haible and Pascal Costanza)
1449 * fixed bug #339(c): if there are applicable methods not part of any
1450 long-form method-combination group, call INVALID-METHOD-ERROR.
1451 (reported by Bruno Haible)
1452 * fixed bug #361: the :FUNCTION initarg in the protocol for
1453 initialization of methods can now be used to override
1454 internally-produced optimized functions. (reported by Bruno
1456 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1457 system-provided lambda expression no longer cause warnings about
1458 unbound #:|pv-table| symbols.
1459 * bug fix: improved the handling of type declarations and the
1460 detection of violations for keyword arguments with non-constant
1462 * bug fix: potentially erronous calls to PATHNAME and
1463 MERGE-PATHNAMES were being flushed in some cases.
1464 (reported by Richard Kreuter)
1465 * bug fix: compiled calls to TYPEP were mishandling obsolete
1466 instances. (reported by James Bielman and Attila Lendvai)
1467 * bug fix: format strings with ~> without matching ~< no longer
1468 trigger an AVER, but signal an understandable error instead.
1469 (reported by Antonio Martinez)
1470 * bug fix: specifying an output-file without a pathname-type for
1471 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1472 of input-file instead of "fasl". (reported by Robert Dodier)
1473 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1474 (reported by James Y Knight).
1475 * bug fix: compiler-macros-function did not consider the environment
1476 argument for shadowing by local functions.
1477 * bug fix: compiler-macros expansion was inhibited by local INLINE
1479 * bug fix: inline expansions of known functions were subject to
1480 step-instrumentation in high debug policies, leading to problems
1481 with type-inference.
1482 * bug fix: compiler failed to differentiate between different CONS
1483 types in some cases.
1484 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1485 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1486 * bug fix: #368: incorrect use of expressed vs. upgraded array
1488 * bug fix: #306a: more precise unions of array types.
1489 * thread-safety improvements:
1490 ** CONDITION-WAIT could return early on Linux, if the thread was
1491 interrupted and subsequently continued with SIGCONT.
1492 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1494 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1495 * added support for the ucs-2 external format. (contributed by Ivan
1497 * minor incompatible change: pretty printing of objects of type
1498 (cons symbol) is, in the default pprint-dispatch-table, now
1499 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1501 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1502 called later in a class's lifetime, possibly as late as when the
1503 first instance of the class is created. Previously,
1504 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1505 class became finalizeable.
1506 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1507 for multibyte external-format streams. (thanks to "vbzoli")
1508 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1509 with :ALLOCATION :CLASS inherited from superclasses of the
1511 * fixed bug: anonymous classes can now be created using the :NAME
1512 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1513 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1514 * fixed bug: core-files saved with :EXECUTABLE T can again be
1515 executed when SBCL_HOME isn't set. (reported by James Knight)
1516 * fixed bug: toplevel LOCALLY forms with declarations could
1517 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1518 * fixed bug: printing from several different threads using different
1519 values of *print-case* could cause invalid output, due to
1520 some internal special variables of the printer not being bound
1521 thread-locally (reported by Max Mikhanosha)
1522 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1523 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1524 (reported by Pascal Costanza)
1525 * fixed bug: FINALIZE-INHERITANCE is called from
1526 REINITIALIZE-INSTANCE on classes when the class has previously
1527 been finalized, as required by AMOP.
1528 * minor code generation optimizations:
1529 ** better register allocation in CLOS dispatching functions
1530 ** overflow detection when coercing signed bytes to fixnums on x86-64
1531 ** is now implemented with one IMUL instruction instead of three shifts
1532 ** more efficient bit-vector access on x86 and x86-64
1533 ** more efficient access to raw structure slots on x86 and x86-64
1534 * fixed some bugs revealed by Paul Dietz' test suite:
1535 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1536 return its argument.
1538 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1539 * feature: thread support on Solaris/x86, and experimental thread support
1541 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1543 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1544 default method for SLOT-UNBOUND.
1545 * minor incompatible change: prevent the user from specializing the
1546 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1547 somewhat counter to the intent of the protocol, I (CSR) think, and
1548 additionally it just doesn't work in SBCL as currently
1549 implemented, thanks to optimizations (that are always valid for
1550 the other three SLOT-VALUEish functions, but not for the setter).
1551 * minor incompatible change: the :SB-LDB feature is now enabled by
1552 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1553 the low-level debugger.
1554 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1555 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1556 down to an SB-SYS:FD-STREAM, allowing direct communication in
1557 more cases. Temporary files and pipes are still used as a fallback
1559 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1560 on the non-reentrant C functions localtime(3) and gmtime(3).
1561 * bug fix: global optimization policy was not visible in LOCALLY and
1563 * bug fix: class objects can be used as specializers in methods.
1564 (reported by Pascal Costanza)
1565 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1566 with a type error. (reported by blitz_ on #lisp)
1567 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1568 failed with a type error. (reported by Pascal Bourguignon)
1569 * bug fix: merging pathnames against defaults with :DIRECTORY
1570 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1571 (reported by James Y Knight)
1572 * bug fix: saving large (>2GB) cores on x86-64 now works
1573 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1574 constant index and a (simple-array (signed-byte 32)) array
1575 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1576 error (patch by Robert J. Macomber)
1577 * feature: TIME now displays the amount of run-time spent in GC
1578 * bug fix: The debugger now does a better job of respecting
1579 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1580 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1581 workaround for bug 403.)
1582 * bug fix: floating point exception handling now works on FreeBSD
1583 (thanks to NIIMI Satoshi)
1584 * fixed some bugs revealed by Paul Dietz' test suite:
1585 ** MISC.641: LET-conversion were not supposed to work in late
1587 * improvements to the Win32/x86 port:
1588 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1589 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1591 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1592 * new feature: source path information is generated for macro-expansion
1593 errors for use in IDE's like Slime (thanks to Helmut Eller)
1594 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1595 * bug fix: compiler does not loop forever on an invalid type in
1597 * improvement: compilation of most CLOS applications is significantly
1599 * optimization: added a limited bytecode compiler for simple toplevel
1600 forms, speeding up compilation and FASL loading
1601 * bug fix: the statistical profiler now properly distinguishes anonymous
1604 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1605 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1606 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1607 into subclasses of the finalized class. Now user calls to
1608 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1609 system return before any subclasses are finalized.
1610 * minor incompatible change: The reader no longer ignores errors
1611 regarding non-existent packages in #+ and #- feature tests.
1612 * new feature: command line options --no-sysinit, --no-userinit to
1613 inhibit loading the corresponding init files
1614 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1615 for sending data through UDP sockets (thanks to François-René Rideau)
1616 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1617 error is signalled instead (thanks to François-René Rideau)
1618 * minor incompatible change: Error signalling behaviour of lexical
1619 operations violating package locks has changed slightly. Refer to
1620 documentation on package locks for details.
1621 * enhancement: EVAL can process IF-expressions without resorting to the
1623 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1624 constant-folded properly due to missing out-of-line functions.
1625 (reported by Mika Pihlajamäki)
1626 * bug fix: LISTEN sometimes returned T even in cases where no data was
1627 immediately available from the stream
1628 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1629 were reversed. (reported by Levente Mészáros)
1630 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1631 when given a vector displaced to an adjustable array. (reported
1633 * bug fix: derivation of float boundaries from numbers outside the
1634 appropriate float range (reported by John Wiseman)
1635 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1637 * bug fix: precomputing cache entries for generic functions with
1638 some subclasses of specializers as yet invalid does not attempt to
1639 fill a cache line with a negative offset. (reported by Levente
1641 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1642 allow condition class objects as arguments to DOCUMENTATION and
1643 (SETF DOCUMENTATION); only find and set documentation for
1644 structure names for the STRUCTURE doc-type. (suggested by Gary
1646 * improvements to the Win32/x86 port:
1647 ** (user-homedir-pathname) and default initialization file
1648 locations now know about the user's "Documents and Settings"
1649 directory (thanks to Yaroslav Kavenchuk)
1650 ** run-program is implemented (thanks to Mike Thomas)
1651 ** sockets support (thanks to Timothy Ritchey)
1652 ** better backtrace support (thanks to Alastair Bridgewater)
1653 ** sb-grovel supported
1654 ** asdf-install and sb-posix work somewhat
1655 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1656 * improvements to the Solaris/x86 port:
1657 ** works on Solaris 11/Solaris Express
1658 ** floating-point exception handling support
1659 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1660 * fixed some bugs revealed by Paul Dietz' test suite:
1661 ** REMOVE-METHOD returns its generic function argument even when
1662 the method is not one of the generic functions' methods.
1663 ** objects declared as MEMBER types can be admissible arguments to
1664 structure accessors.
1665 ** printing characters should simply be printed by the FORMAT ~:C
1667 ** compiler failure when compiling functions with hairy constant
1668 defaults for optional parameters.
1669 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1670 function, which is already optimized.
1672 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1673 * new platform: experimental support for SBCL x86/Darwin, including
1674 MacOS X 10.4.5 on Intel.
1675 * new feature: Unicode character names are now known to the system
1676 (through CHAR-NAME and NAME-CHAR).
1677 * new feature: the filesystem location of SBCL's core file is
1678 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1679 * minor incompatible change: the contrib modules SB-POSIX and
1680 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1681 this change is to make it easier to distribute
1682 location-independent binaries.
1683 * bug fix: as implied by AMOP, standardized classes no longer have
1684 slots named by external symbols of public packages. (reported by
1686 * optimization: calling functions via constant symbols -- as in
1687 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1688 via the function object as in (FUNCALL #'FOO).
1689 * optimization: on x86 and x86-64, the calling convention for the
1690 case of dealing with an unknown number of values has been altered
1691 to be friendlier to the prediction heuristics implemented,
1692 particularly with reference to CALL and RET pairing. (thanks to
1693 Alastair Bridgewater)
1694 * optimization: on x86, the code for access to thread-local symbol
1695 values and binding/unbinding of thread-local symbols is smaller.
1696 (thanks to Alastair Bridgewater)
1697 * enhancement: CONSTANTP is now able to determine constantness of
1698 more complex forms, including calls to constant-foldable standardized
1699 functions and some special forms beyond QUOTE.
1700 * fixed bug: occasional GC crashes on Solaris/x86
1701 * optimization: x86-64 supports stack allocation of results of simple
1702 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1703 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1704 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1705 (thanks to James Knight)
1706 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1707 by the standard (thanks to Stephen Compall)
1709 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1710 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1711 be used for bundling the runtime and the core file into one
1712 executable binary. This feature is not currently supported on all SBCL
1713 platforms. (thanks to James Bielman and NIIMI Satoshi)
1714 * new feature: a generational or ephemeral garbage collector is now
1715 the default on the PowerPC platform (both Linux and Darwin). The
1716 old Cheney (stop and copy) collector is a build-time option.
1717 (thanks to Cyrus Harmon, after Raymond Toy)
1718 * minor incompatible change: the method by which SBCL finds its
1719 contributed modules has changed; it no longer relies on symbolic
1720 links from an $SBCL_HOME/systems directory, but searches directly
1721 in the subdirectories of $SBCL_HOME.
1722 * enhancement: the dynamic heap size on the Linux/PPC platform is
1723 markedly larger, even using the older Cheney garbage collector.
1724 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1725 certain complicated string types. (reported by Gary King)
1726 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1727 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1728 * fixed bug: DOCUMENTATION on structures no longer signals an
1729 error if no structure type of the right name exists. (reported by
1731 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1732 applicable non-standard primary or :AROUND method on
1733 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1734 no longer cause unbound variable errors. (reported by Kevin Reid)
1735 * fixed bug: metacircle resolution in cases where methods have slots
1736 added before the slots from STANDARD-METHOD. (reported by Jean
1738 * fixed bug: the Power PC assembly code for calling into lisp
1739 sometimes computed its return address wrongly (depending on the
1740 15th bit of the address, fixed at link time). This used to
1741 manifest itself in a segmentation violation while building PCL.
1742 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1743 many others over the years)
1744 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1745 the stack pointer (treated as a signed integer) is negative.
1746 (thanks to Peter van Eynde)
1748 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1749 * new platform: experimental support for the Windows operating
1750 system has been added. (thanks to Alastair Bridgewater)
1751 * fixed several bugs in and robustified the PPC FFI (including
1752 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1753 * bug fix: allow non-simple string symbol names (reported by Paul
1755 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1757 * bug fix: saving a core corrupted callbacks on x86/x86-64
1758 * bug fix: closed a loophole in metacircularity detection and
1759 grounding in the PCL implementation of CLOS.
1760 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1761 (reported by tomppa on #lisp)
1762 * bug fix: clear the direction flag on Lisp -> C transitions, as
1763 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1764 (reported by Andrej Grozin and Hendrik Maryns)
1765 * optimization: major improvements to GC efficiency on GENCGC platforms
1766 * optimization: faster implementation of EQUAL
1767 * optimization: emit more efficient opcodes for some common
1768 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1769 * optimization: several other minor code-generation improvements on x86-64
1770 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1772 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1773 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1774 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1775 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1776 by ANSI as a generic function, and for consistency (SETF
1777 GENERIC-FUNCTION-NAME) is treated likewise.
1778 * fixed bug #233.b: make constraint propagation notice when a variable
1779 value is changed after it is referenced but before it is used
1780 * fixed bug #296: no more arbitrary behaviour from filenames with
1781 odd characters as --load arguments. (reported by Adam Warner)
1782 * fixed bug #390: :CHARACTER-SET pathname components now work as
1783 expected. (reported by Tim Daly Jr)
1784 * fixed bug #391: complicated :TYPE intersections in slot
1785 definitions no longer cause an error in PCL internals.
1786 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1787 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1788 returning the number of octets which would be written to the
1789 file-stream. (thanks to Robert J. Macomber)
1790 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1791 arguments to the internal stream functions. (thanks to David
1793 * bug fix: stack exhaustion is now handled on the x86/SunOS
1794 platform. (thanks to Daisuke Homma)
1795 * bug fix: more accurate ROOM results on GENCGC platforms
1796 * optimization: improved type inference for arithmetic-for
1797 index variables in LOOP
1798 * optimization: faster floating-point SQRT on x86-64
1799 * fixed some bugs revealed by Paul Dietz' test suite:
1800 ** DOCUMENTATION returns NIL instead of "" for method combinations
1801 that don't have a docstring
1803 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1804 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1805 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1806 therefore are not customizeable by user code (as seems to be at
1807 least permitted and maybe required by AMOP). As a consolation,
1808 however, the SBCL implementation of these functions now calls
1809 REINITIALIZE-INSTANCE as specified by AMOP.
1810 * bug fix: slot-definition documentation is propagated as per ANSI
1811 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1812 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1813 argument, as do eslotd initialization methods. (from Pascal
1814 Costanza's "Closer" project)
1815 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1816 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1818 * bug fix: it is now possible to have more than one subclass of
1819 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1820 (reported by Bruno Haible, Pascal Costanza and others)
1821 * bug fix: the dependent update protocol now works for generic
1822 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1823 and Pascal Costanza)
1824 * bug fix: condition-class instances corresponding to
1825 DEFINE-CONDITION forms are now created eagerly. (reported by
1826 Kalle Olavi Niemitalo on comp.lang.lisp)
1827 * bug fix: floating point printing is more accurate in some
1828 circumstances. (thanks to Simon Alexander)
1829 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1830 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1831 * bug fix: callbacks on OS X now preserve stack-alignment.
1832 (thanks to Cyrus Harmon)
1833 * enhancement: the x86-64 disassembler is much better at
1834 disassembling SSE instructions. (thanks to Lutz Euler)
1835 * enhancement: CHECK-TYPE on a variable now allows type-inference
1836 (thanks to Vincent Arkesteijn)
1837 * optimization: improved performance of EUC-JP external format.
1838 (thanks to NIIMI Satoshi)
1839 * optimization: performance improvements to IO on file streams of
1840 :ELEMENT-TYPE CHARACTER
1841 * optimization: much faster memory allocation on x86-64
1842 * optimization: faster garbage collections (latency and throughput)
1844 * optimization: faster bignum subtraction and division on x86 and x86-64
1845 (thanks to Lutz Euler)
1846 * optimization: more accurate type-inference for loops that use a
1847 floating point index variable or a negative step.
1849 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1850 * bug fix: add a workaround to SBCL looping infinitely at startup on
1851 Linux kernels with apparently buggy implementations of personality().
1852 (thanks to Svein Ove Aas)
1853 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1854 (thanks to David Lichteblau)
1855 * bug fix: local bindings shadow global symbol macros for
1856 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1857 * optimization: non-open coded uses of numeric comparison operators
1858 (e.g. >) no longer cons when called with more than one parameter
1859 on platforms supporting dynamic-extent allocation.
1860 * enhancement: saving cores with foreign code loaded is now supported
1861 on MIPS/Linux in addition to the previously supported platforms.
1862 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1863 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1864 * bug fix: division by zero in sb-sprof when no samples were collected
1865 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1866 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1867 (thanks to Alexander Kjeldaas)
1868 * new feature: ignoring the return values of destructive functions
1869 like NREVERSE signals a compile-time style-warning.
1870 (thanks to Kevin Reid)
1871 * new feature: the alignment of alien structure fields can be
1872 explicitly specified. (thanks to Cyrus Harmon)
1873 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1874 and dump core on SIGQUIT
1876 ** incompatible change: threads do not inherit values of specials
1877 from their parents (see manual)
1878 ** bug fix: threads stacks belonging to dead threads are freed by the
1879 next exiting thread, no need to gc to collect thread stacks anymore
1880 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1881 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1882 ** bug fix: dynamic variable and thread start related gc lossage
1883 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1885 * fixed some bugs revealed by Paul Dietz' test suite:
1886 ** SUBTYPEP is slightly more accurate on heinously complicated
1887 CONS types where some of the members have uncertain (in the
1888 NIL, NIL sense) type relationships to each other.
1890 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1891 no longer purified unless :PURIFY T is explicitly specified.
1892 ** Non-purified cores are significantly smaller than before
1894 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1895 * new feature: timers based on Zach Beane's excellent timer package
1896 * added support for the following external formats: koi8-u,
1897 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1898 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1899 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1900 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1901 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1902 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1903 * incompatible change: a threaded SBCL will no longer revert to
1904 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1905 * bug fix: interrupts are disabled until startup is complete; no
1906 more sigsegvs when receiving a signal to soon
1907 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1909 * bug fix: add a workaround for the memory randomization features in
1910 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1911 workaround will only be in effect on systems with the proc filesystem
1913 * bug fix: printing objects of type HASH-TABLE signals a
1914 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1916 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1917 have been running for over 50 days. (reported by Gilbert Baumann)
1918 * bug fix: the logic for getting names of functions gets less
1919 confused when confronded with alternate-metaclass
1920 funcallable-instances. (reported by Cyrus Harmon)
1921 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1922 consistent, even on internal alternate-metaclass objects.
1923 * bug fix: flush closure information collected by physical
1924 environment analysis prepass before the main pass. (bug reported
1926 * bug fix: compiler pack phase does not modify a hashtable, which is
1927 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1928 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1929 may be expanded. (reported by Alexander <malishev> on c.l.l)
1930 * bug fix: no more style-warnings when compiling code using LAST
1931 under high-SPEED low-SPACE settings. (reported by David Wallin
1933 * fixed some incompatibilities between SBCL's MOP and the MOP
1935 ** the METAOBJECT class is now implemented;
1936 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1937 STANDARD-OBJECT, as required;
1938 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1939 now compatible (as required by VALIDATE-SUPERCLASS); there
1940 remains a consistency requirement over the presence or absence
1941 of the FUNCTION class in the superclass list of finalized
1942 classes; see the manual for more details;
1943 ** the :AROUND method for COMPUTE-SLOTS on
1944 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1945 requested slot ordering.
1947 ** bug fix: parent thread now can be gc'ed even with a live
1949 ** bug fix: binding a special with PROGV to no value is not
1950 the same as that symbol not having been bound (thanks to
1952 ** bug fix: binding specials is thread safe (thanks to
1954 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1955 and SB-SPROF do not die with 'no handler for signal XX in
1956 interrupt_handle_now(..)' anymore
1957 ** bug fix: WITH-TIMEOUT works with multiple running threads
1958 * fixed some bugs revealed by Paul Dietz' test suite:
1959 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1960 the :method-class keyword argument.
1962 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1963 * new port: the Solaris operating system on x86 processors is now
1964 mostly supported, though some rough edges in the environment
1965 remain. (thanks to Daisuke Homma)
1966 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1967 space for its heap. (thanks to Thiemo Seufer)
1968 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1969 closures. (thanks to Thiemo Seufer)
1970 * minor incompatible change: eof selects abort in the debugger.
1971 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1972 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1974 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1975 deprecated, and will go away in a future revision of SBCL.
1976 * minor incompatible change: GC-ON and GC-OFF are no longer
1977 implemented with a counter, it does not matter how many times gc
1978 is switched on or off
1979 * bug fix: discriminating functions for generic function classes
1980 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1981 make invalid assumptions about method precedence order. (reported
1983 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1984 platforms. (thanks to Thiemo Seufer)
1985 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1986 * bug fix: correct pathname printing with printer escaping is on.
1987 (thanks to Kevin Reid)
1988 * bug fix: complex VOP definitions in "user-space" no longer trigger
1989 package locks. (reported by Zach Beane)
1990 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1991 for funcallable-instance functions, and is no different from
1993 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1994 characters in the current readtable. (reported by Nicholas Neuss)
1995 * bug fix: SUBTYPEP on various CONS types returns more a more
1996 accurate acknowledgment of its certainty.
1997 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1998 lists in some cases. This partially fixes bug 384.
1999 * flush all standard streams before prompting in the REPL and the
2001 * bug fix: signal handling and triggering gc do not conflict
2002 directly anymore, in particular a high frequency sb-sprof does
2003 not prevent gc from running
2004 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2005 approximation for timezone and DST information between the
2006 universal time epoch and the smallest negative 32-bit time_t.
2007 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2008 year 1899 so long as the encoded time is non-negative.
2009 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2010 the correct answer for non-constant rotate amounts when performing
2011 an inline 32-bit rotation.
2013 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2014 there is only one thread in the session
2015 ** bug fix: memory leak for streams created in one thread and
2016 written to in another
2017 ** bug fix: lockup when compiled with gcc4
2018 ** bug fix: race that allows the gc to be triggered when gc is
2020 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2021 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2023 ** bug fix: finished threads are gc'ed properly
2024 * fixed some bugs revealed by Paul Dietz' test suite:
2025 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2026 has arguments with a different set of applicable methods from
2027 the orignal arguments.
2028 ** The type error thrown by MAP now has a correct expected-type
2030 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2031 name a compiled function.
2032 ** Three MISC tests where a large bignum was improperly coerced to
2033 a float that couldn't represent that bignum during type
2034 derivation were fixed.
2035 ** SUBTYPEP can now handle types involving the negation of a
2036 list-form FUNCTION type.
2037 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2038 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2039 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2041 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2042 * New feature: Experimental support for bivalent streams: streams
2043 opened with :element-type :default now allow character and binary
2044 (unsigned-byte 8) I/O
2045 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2046 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2048 * bug fix: no more highly sporadic "couldn't check whether ~S is
2049 readable" when reading a stream and an interrupt hits in the middle
2050 of a select system call
2051 * compiler better recognizes complex arrays (reported by Eduardo
2053 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2054 for variables on SBCL built with linkage-tables. (reported by Luis
2056 * various error reporting improvements.
2057 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2058 (Thanks to Thiemo Seufer)
2059 * bug fix: nested reader invokations work correctly
2060 * bug fix: it is possible to have simultaneous references to foreign
2061 code and foreign data with the same name.
2063 ** added x86-64 support
2064 ** incompatible change: the threading api now works with thread
2065 objects instead of thread ids
2066 ** bug fix: threads are protected from signals and interruption when
2067 starting up or going down
2068 ** bug fix: a race where an exiting thread could lose its stack to gc
2069 ** bug fix: don't halt on infinite error in threads if possible
2070 ** fixed numerous gc deadlocks introduced in the pthread merge
2071 ** bug fix: fixed thread safety issues in read and print
2072 ** bug fix: debugger doesn't hang on session lock if interrupted at
2073 an inappropriate moment
2074 ** bug fix: run-program is now thread safe(r)
2075 ** bug fix: inner with-recursive-lock no longer releases the mutex
2076 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2077 * fixed some bugs revealed by Paul Dietz' test suite:
2078 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2079 EXPECTED-TYPE slots filled.
2080 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2082 ** MAKE-CONDITION accepts classes as type-designators.
2083 ** COMPILE may never return NIL.
2084 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2085 range before calling Unix time functions
2087 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2088 * numerous signal handling fixes to increase stability
2089 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2090 * minor incompatible change: we now correctly canonize default
2091 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2092 as per the MOP, rather than the historical (INITARG INITFUNCTION
2093 INITFORM). (reported by Bruno Haible)
2094 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2095 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2096 for more information.
2097 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2098 pathname is a directory pathname.
2099 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2100 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2102 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2103 :METACLASS argument in addition to a class name. (reported by
2104 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2105 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2106 (reported by Bruno Haible; patch from Gerd Moellmann)
2107 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2109 * bug fix: more cleanups to the floating point exception handling on
2110 x86-64 (thanks to James Knight)
2111 * bug fix: the compiler does not try to constant fold calls of
2112 COERCE and BIT-* functions when they return freshly constructed
2113 objects. (reported by Nikodemus Siivola and Paul Dietz)
2114 * optimization: improved the MIPS versions of generic (in the
2115 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2116 * optimization: direct conversion of (unsigned-byte 32) to floats on
2117 the PowerPC platform.
2118 * optimization: structure instances with raw slots now use less
2119 memory, and probably show better memory locality. (thanks to
2121 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2122 are treated as requests for stack allocation on the x86-64,
2123 Alpha-32, PPC and SPARC platforms.
2124 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2125 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2126 (thanks to Tony Martinez)
2128 ** gcing a dead thread can no longer lead to lockups
2129 ** threads block signals until they are set up properly
2130 ** errno is no longer shared by threads
2131 ** interrupt-thread restores the eflags register on x86
2132 ** fixed some lockups due to gc/thread interaction
2133 * fixed some bugs revealed by Paul Dietz' test suite:
2134 ** invalid dotted lists no longer raise a read error when
2135 *READ-SUPPRESS* is T
2136 ** signal an error if a symbol that names a declaration is used
2137 as the name of a type, or vice versa
2138 ** allow using the (declare (typespec var*)) abbreviation for
2139 (declare (type typespec var*)) with all type specifiers
2140 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2141 ** always return NIL from PPRINT-POP when OBJECT is NIL
2142 ** don't signal errors when pretty-printing malformed LABELS,
2143 FLET or MACROLET forms
2144 ** declarations in a DOLIST body are also in scope for the
2146 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2148 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2151 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2152 * fixed cross-compiler leakages that prevented building a 32-bit
2153 target with a 64-bit host compiler.
2154 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2155 opened with :IF-EXISTS :OVERWRITE.
2156 * fixed bug 281: error for an invalid qualifier in a short-form method
2157 combination method is not signalled until the faulty method is called.
2158 * bug fix: iteration variable type inferrer failed to deal with open
2159 intervals. (reported by Alan Shields)
2160 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2161 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2162 or more runtime options were provided to the sbcl binary.
2163 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2164 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2165 * optimization: there's now a fast-path for fixnum arguments in the
2166 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2167 * optimization: the code generated on x86-64 is more compact thanks
2168 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2169 * bug fix: floating-point exception handling now partly works on
2170 x86-64. (Thanks to James Knight)
2171 * improvement to the MIPS backend from Thiemo Seufer: C-style
2172 64-bit long long arguments and return values to alien functions
2174 * fixed some bugs revealed by Paul Dietz' test suite:
2175 ** the type-error signalled from WARN has a filled-in DATUM slot.
2176 ** the type-error required when a stream is not associated with
2177 a file has the stream as its datum.
2178 ** type-errors on single-floats on x86-64 no longer have
2179 :INVALID-OBJECT as the datum
2180 ** the type-errors signalled for invalid function names now have
2181 a correct expected type
2182 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2183 for structures defined with a :TYPE. Documentation strings for
2184 typed structures are no longer immediately discarded
2185 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2186 broadcast streams and synonym streams. FILE-LENGTH now also works
2187 on broadcast streams.
2189 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2190 * incompatible change: the --noprogrammer option, deprecated since
2191 version 0.7.5, has been removed. Please use the equivalent
2192 --disable-debugger option instead.
2193 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2195 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2196 inoperational for a while now) has been completely removed.
2197 * null lexical environments are now printed as #<NULL-LEXENV>,
2198 significantly reducing the amount of clutter in typical backtraces.
2199 * documentation on weak pointers, finalization, and after GC hooks
2200 has been added to the manual.
2201 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2202 as other specialized array types, is much faster. SUBSEQ and
2203 COPY-SEQ on such arrays have also been sped up.
2204 * optimization: EQL is now more efficient when at least other argument
2205 is known to be of type (OR FIXNUM (NOT NUMBER)).
2206 * fixed bug: the runtime is now less vulnerable to changes in the
2207 size of the SBCL object on OS X, and virtual memory is reserved for
2208 all spaces that need to be at a fixed address.
2209 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2210 * fixed bug: finalizers and after GC hooks that cause consing are now
2212 * fixed bug: compiler error messages and summaries are now printed to
2213 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2214 * fixed inference of the upper bound of an iteration variable.
2215 (reported by Rajat Datta).
2216 * fixed bug 211e: calling local functions with duplicated constant
2217 keyword argument no longer causes a bogus style warning about an
2219 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2220 ftype declaration to be disregarded. (reported by Dave Roberts)
2221 * fixed bug 373: caused by erronous compilation of references to alien
2222 variables in the runtime on ppc/darwin.
2223 * fixed bug 376: CONJUGATE type deriver.
2224 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2225 (reported by Baughn on #lisp)
2226 * a cross-compiler bug on non-x86 platforms has been identified and
2227 fixed. (thanks to Bruno Haible)
2228 * improvements to the MIPS runtime code for increased stability.
2229 (thanks to Thiemo Seufer)
2230 * increased the maximimum compact environment size to allow
2231 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2232 * partial workaround for bug 135: don't name the function we're
2233 calling for hairy cases of EVAL, so as not to accumulate one environment
2234 entry per call to EVAL. (reported by Kevin Reid)
2235 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2236 * optimization: type testing for non-vector arrays should be faster.
2237 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2239 * bug fix: setting 31st element of a bit vector to zero did not work
2241 * bug fix: redefining a class definition which failed due to a
2242 previous accessor / function clash now works (but see BUGS entry
2243 #380 for more problems in this area). (thanks to Zach Beane)
2244 * the long form of DEFINE-METHOD-COMBINATION disables method group
2245 checking when given a single method group with pattern *. (thanks
2247 * on x86 compiler supports stack allocation of results of simple
2248 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2249 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2250 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2251 * fixed some bugs related to Unicode integration:
2252 ** the restarts for recovering from input and output encoding
2253 errors only appear when there is in fact such an error to
2255 * fixed some bugs revealed by Paul Dietz' test suite:
2256 ** MISC.549 and similar: late transformation of unsafe type
2257 assertions into derived types caused unexpected code
2259 ** SCALE-FLOAT type deriver is less wrong.
2260 ** type derivers for EXP, LOG and similar functions compute result
2261 types for complex arguments better.
2262 ** (MISC.563) CONJUGATE type deriver works for very restricted
2264 ** out-of-line type testers for character strings are available.
2265 ** EQUAL compiler transform understands specialness of objects
2267 ** accessing double-floats stored on the stack now works on x86-64.
2268 ** debugger internals could sometimes create invalid lispobjs,
2269 resulting in GC crashes.
2270 ** MISC.548: type check weakening can convert required type into
2272 ** initialization forms for bindings are not in scope of free special
2275 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2276 * incompatible change: thread support for non-NPTL systems has
2277 been removed - locking is buggy and unreliable. A threaded
2278 SBCL build will now warn at startup and refuse to create
2279 new threads, unless futex support is detected in the kernel
2280 * incompatible change: the top level REPL now has only an ABORT
2281 restart associated with it, not TOPLEVEL and ABORT as it used to.
2282 TOP and TOPLEVEL are now available as debugger commands for
2283 returning to the top level.
2284 * incompatible change: forms evaluated in the REPL now use the
2285 global optimization policy.
2286 * incompatible change: user- and system-initialization files are
2287 no longer processed with LOAD, but by READ and EVAL; hence the
2288 global optimization policy, startup package, readtable, etc,
2290 * The .fasl file format number has been incremented because of
2291 various incompatible changes.
2292 * internal entry point details and argument counts no longer appear
2293 in backtraces unless explicitly requested by setting
2294 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2295 * built-in and standard functions no longer have names like "top
2296 level local call to FOO".
2297 * fixed bug 32: functions defined in non-null lexical environments
2298 now have more legible printed representation
2299 * fixed bug 33: functions defined in non-null lexical environemnts
2300 are now more amenable to inspection by INSPECT.
2301 * workaround for bug 354: XEPs no longer appear in backtraces unless
2302 explicitly requested.
2303 * fixed bug: receiving the signal which results from attempting to
2304 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2305 SIGBUS on other *BSDs) on architectures where the C stack is also
2306 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2307 to debugger confusion or wild instability. (reported by Cheuksan
2309 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2310 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2311 (reported by Lutz Euler)
2312 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2313 compiled code. (reported by Paul Dietz)
2314 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2315 specialized parameter to a method to something that is not TYPEP
2316 the specializer is now possible.
2317 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2318 face of package deletion.
2319 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2320 pathname. (reported by David Tolpin on c.l.l)
2321 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2322 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2323 STRING-STREAM and FILE-STREAM, respectively.
2324 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2325 than previously; in addition, its test suite is now run on build.
2326 (thanks to Luke Gorrie)
2327 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2328 * optimization: added a immediate representation for single-floats
2330 * fixed some bugs revealed by Paul Dietz' test suite:
2331 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2332 ** attempting to create a package with a colliding nickname causes
2333 correctable errors to be signalled.
2334 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2335 ** several x86-64 backend bugs related to sign-extension of immediate
2338 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2339 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2340 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2342 * fixed loading of multiply forward-referenced layouts.
2343 (thanks to Cheuksan Wang)
2344 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2345 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2346 (see COMPILE-FILE documentation for details of :PRINT option)
2347 * fixed bugs 19 and 317: fixed-format floating point printing is
2348 more accurate. This also fixes a bug reported by Adam Warner
2349 related to the ~@F format directive.
2350 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2352 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2353 dispatch table if the from-char is a dispatch macro character.
2354 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2355 by the wordsize no longer ignore the last word. (reported by Lutz
2357 * fixed bug in type checking of dynamic-extent variables. (reported
2359 * optimization: sequence traversal functions use their freedom to
2360 coerce function designators to functions.
2361 * optimization: code with many calls to CLOS methods specialized on
2362 CLOS classes has had redundant type checks removed.
2363 * optimization: added declarations to speed up operations that access
2364 the internal character database (for example STRING-UPCASE)
2365 * optimization: comparison operations between floats and sufficiently small
2366 fixnums no longer create extra rationals
2367 * fixed some bugs related to Unicode integration:
2368 ** portions of multibyte characters at the end of buffers for
2369 character-based file input are correctly transferred to the
2370 start of the buffer at the next read.
2371 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2372 passing it through to OPEN.
2373 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2374 argument given to internal calls to OPEN.
2375 ** the built-in comment readers (introduced by character sequences
2376 ";" and "#|") are more forgiving to encoding errors; they will
2377 STYLE-WARN and then attempt to resync the stream at a character
2378 boundary. (thanks to Teemu Kalvas)
2379 * fixed some bugs in the x86-64 port:
2380 ** Negative short int return values from c-calls are sign-extended
2382 ** The stack is aligned to 16-bytes for c-calls, as required by
2383 the ABI. (thanks to Cheuksan Wang)
2384 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2385 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2386 for enums. (thanks to Vincent Arkesteijn)
2387 ** Multiple small optimizations and bugfixes for floating point
2389 * fixed some bugs revealed by Paul Dietz' test suite:
2390 ** Space, Tab, Linefeed, Return and Page have the invalid
2391 secondary constituent character trait.
2392 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2394 ** WITH-INPUT-FROM-STRING should only update the index place on
2396 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2397 works more reliably.
2398 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2399 with one-dimensional arrays with fill pointers.
2400 ** TYPE-OF failed on a complex with an integer realpart and a
2402 ** compiler failure during type inference for the code of form
2403 (IF (EQL X (THE ...)) ...) (MISC.535).
2405 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2406 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2407 platform. The port supports 61-bit fixnums, large memory spaces
2408 and reloading shared object files.
2409 * enhancement: saving cores with foreign code loaded is now
2410 supported on ppc/Darwin in addition to the previously supported
2412 * enhancement: the statistical profiler now walks deeper into the
2413 call stack for more meaningful call-graphs and accrued time
2414 reports (x86/x86-64 only). It also now reports time spent in
2416 * enhancement: it is now possible to trace most individual methods
2417 of a generic function in addition to tracing the generic function
2419 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2421 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2422 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2423 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2424 produces an error. (thanks to Vincent Arkesteijn)
2425 * bug fix: NAMESTRING on pathnames with :WILD components in their
2426 directories works correctly. (thanks to Artem V. Andreev)
2427 * fixed bug 125: compiler preserves identity of closures. (reported
2429 * bug fixed: functions with &REST arguments sometimes failed with
2430 "Undefined function" when compiled with (DEBUG 3). (reported by
2432 * bug fix: overflow during compiling of setting element of a bit
2433 vector with constant index and value. (reported by Timmy Douglas)
2434 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2435 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2436 * on x86 compiler partially supports stack allocation of dynamic-extent
2438 * GO and RETURN-FROM do not check the extent of their exit points
2439 when compiled with SAFETY 0.
2440 * fixed some bugs related to Unicode integration:
2441 ** encoding and decoding errors are now much more robustly
2442 handled; it should now be possible to recover even from invalid
2443 input or output to the terminal. (thanks to Teemu Kalvas)
2444 ** provided a first cut at implementing STRING-TO-OCTETS and
2445 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2446 ** altered the SB-MD5 contributed module slightly, changing the
2447 interface just enough for it to be supportable for builds where
2448 lisp characters are not eight bits.
2449 * fixed some bugs revealed by Paul Dietz' test suite:
2450 ** the FORMATTER-generated functions for ~V[ conditionals require
2451 the correct number of arguments.
2452 ** READ-FROM-STRING returns the mandated second value when applied
2453 to displaced strings.
2454 ** the #\Rubout and #\Backspace characters are treated as invalid
2455 constituent characters by the tokenizer.
2457 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2458 * new feature: reloading changed shared object files with
2459 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2460 * new feature: references to foreign variables and functions
2461 can now be compiled and loaded before the corresponding shared
2462 object file is loaded, as long as the foreign definitions are
2463 available at runtime.
2464 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2465 supported. (thanks to Dan Debertin)
2466 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2467 just keywords. (thanks to Vincent Arkesteijn)
2468 * fixed bug #331: structure-class instances corresponding to
2469 DEFSTRUCT forms are now created eagerly.
2470 * fixed bug #345: backtraces from calls to undefined functions work
2471 on x86 as well. Related bug #61 is now also partially fixed on x86
2472 (backtraces from throws to unknown catch tags.)
2473 * bug fix: lambda-list parsing is now stricter vrt. order and number
2474 of lambda-list keywords.
2475 * bug fix: as specified by AMOP, an error is signalled if a
2476 class-option appears multiple times in a DEFCLASS form. (reported
2478 * bug fix: RANDOM can be compiled when the compiler derives the type
2479 of its numeric argument as a disjoint set of small integers.
2480 (reported by Paul Dietz)
2481 * bug fix: starting a core saved with shared objects loaded when
2482 those objects are not available no longer causes threaded SBCL to
2483 hang. (reported by Sean Ross)
2484 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2486 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2487 argument, which must always be NIL. (reported by Kalle Niemitalo)
2488 * bug fix: printing 1.0d+23 no longer results in an error.
2489 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2490 * bug fix: structure slot setters preserve evaluation order. (thanks
2492 * fixed some bugs related to Unicode integration:
2493 ** RUN-PROGRAM can allow its child to take input from a Lisp
2494 stream. (reported by Stefan Scholl)
2495 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2496 locales. (reported by Ken Causey)
2497 * fixed some bugs revealed by Paul Dietz' test suite:
2498 ** INCF, DECF and REMF evaluate their place form as specified in
2500 ** FORMATTER expands ~{ ~} iteration directives with V or #
2501 parameters correctly.
2502 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2503 consequent uses no arguments correctly.
2504 ** the system has a partial understanding of the (COMPLEX RATIO)
2506 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2509 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2510 * new feature: a build-time option (controlled by the :SB-UNICODE
2511 keyword feature, enabled by default) for building the system with
2512 support for the entire 21-bit character space defined by the
2514 * new feature: the system now has rudimentary external-format
2515 support; the primary user-visible change at this time is that
2516 characters with the high bit set (such as lower-case-e-acute) will
2517 print correctly to a terminal in a UTF-8 environment.
2518 * minor incompatible change: BASE-CHAR no longer names a class;
2519 however, CHARACTER continues to do so, as required by ANSI.
2520 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2521 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2522 has been moved to the SB-EXT package (temporarily re-exported from
2524 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2525 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2527 * fixed bug #351: better error-handlind and reporting for malformed
2529 * fixed bug #350: bignum-printing is now more memory-efficient,
2530 allowing printing of very large bignums, eg. (expt 2 10000000).
2531 (reported by Bruno Haible)
2532 * fixed bug #302: better primitive-type selection for intersection
2534 * fixed bug #308: non-graphic characters now all have names, as
2535 required. (reported by Bruno Haible)
2536 * bug fix: redefining a class with different superclasses now correctly
2537 removes it from the direct-subclasses of its previous superclasses.
2538 (reported by David Morse)
2539 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2540 new value now works. (reported by Bruno Haible)
2541 * bug fix: correct canonicalization of multiple non-standard slot
2542 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2543 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2544 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2545 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2546 now exists, an signals an error.
2547 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2548 during macroexpansion for non-iteration variables as well. (reported
2549 by Bruno Haible for CMUCL)
2550 * bug fix: Cyclic structures and unprintable objects in compiler
2551 messages no longer cause errors. (reported by Bruno Haible)
2552 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2553 and READ-FROM-STRING all now return a primary value of NIL if
2554 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2555 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2556 (reported by Bruno Haible for CMUCL)
2557 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2558 do not designate a condition. (reported by Bruno Haible for
2560 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2561 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2562 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2563 permitting resolution in favour of any of the conflicting symbols.
2564 (reported by Bruno Haible for CMUCL)
2565 * bug fix: EQUAL compiler optimizations is less aggressive on
2566 strings which can potentially compare true despite having distinct
2567 specialized array element types.
2568 * bug fix: unit enumerations can be defined without dividing by
2569 zero. (thanks to Vincent Arkesteijn)
2570 * FORMAT compile-time argument count checking has been enhanced.
2571 (report from Bruno Haible for CMUCL)
2572 * a partial workaround for the bug 262: the compiler does not try to
2573 inline-expand a local function doing RETURN-FROM from a deleted
2574 BLOCK. (thanks to Peter Denno for the bug report and to David
2575 Wragg for the simple test case)
2576 * fixed some bugs revealed by Paul Dietz' test suite:
2577 ** RENAME-PACKAGE allows all package designators as new package
2579 ** constraint propagation and lambda variable substitution are
2580 more cautious in dealing with partially deleted code.
2581 ** compiler sometimes lost reoptimization passes.
2582 ** CERROR, given a condition as condition designator, passes its
2583 remaining arguments to the continue format control without
2585 ** Case-altering FORMAT directives work correctly on non-ASCII
2587 ** The REAL type specifier handles bounds outside the floating
2588 point ranges without signalling FLOATING-POINT-OVERFLOW.
2589 ** Functions with IR1-transformations can create intercomponent
2590 references to global functions.
2591 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2593 ** FORMAT ~R treats a nil value for its first parameter correctly.
2595 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2596 * enhancement: saving cores with foreign code loaded is now
2597 supported on x86/NetBSD and sparc/Linux in addition to the previously
2598 supported platforms.
2599 * bug fix: on some platforms repeated installations caused multiple
2600 copies of HTML documentation to be installed -- should not happen
2601 any more. (reported by Stefan Scholl)
2602 * bug fix: parsing self-recursive alien record types multiple times
2603 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2604 original patch by Helmut Eller for CMUCL)
2605 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2606 (thanks to Richard Kreuter)
2607 * bug fix: defining classes whose accessors are methods on existing
2608 generic functions in other (locked) packages no longer signals
2609 bogus package lock violations. (reported by François-René Rideau)
2610 * bug fix: special variables as DEFMETHOD parameters no longer have
2611 associated bogus type declarations. (reported by David Wragg and
2613 * bug fix: read-write consistency on streams of element-type
2614 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2615 * bug fix: redefiniton of the only method of a generic function with
2616 no DEFGENERIC no longer emits a full WARNING. In addition,
2617 redefinition of generic functions with no DEFGENERIC to an
2618 incompatible lambda list now signals an error. (thanks to Zach
2620 * bug fix: DEFGENERIC now works even when there's a function of the
2621 same name in an enclosing lexical environment. (thanks to Zach
2623 * fixed compiler failure, caused by instrumenting code during
2624 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2625 * optimization: added loop analysis and improved register allocation
2626 * fixed some bugs revealed by Paul Dietz' test suite:
2627 ** POSITION on displaced vectors with non-zero displacement
2628 returns the right answer.
2629 ** (SIMPLE-STRING) is a valid type specifier for sequence
2631 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2633 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2634 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2636 ** The justification version of the FORMAT ~< directive treats
2637 non-zero minpad parameter correctly.
2639 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2640 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2641 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2642 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2643 the supported interface.
2644 * new feature: Single-stepping of code compiled with DEBUG 2 or
2645 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2646 * new feature: saving cores with foreign code loaded is now
2647 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2648 Timothy Moore's work for CMUCL)
2649 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2650 parameters to * instead of NIL if no initform is supplied.
2651 (reported by Johan Bockgaard)
2652 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2653 correctly when FUNCALL appears as the car of the form. Note:
2654 despite this FUNCALL forms are not currently subject to
2655 compiler-macro expansion. (port of Raymond Toy's fix for the
2656 same from CMUCL, reported by Johan Bockgaard)
2657 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2658 (thanks for Teemu Kalvas)
2659 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2660 case instead of terminating the iteration (thanks for Julian
2661 Squires, Sean Champ and Raymond Toy)
2662 * bug fix: incorrect expansion of defgeneric that caused a style
2663 warning. (thanks for Zach Beane)
2664 * bug fix: slot accessor effective method computation works properly
2665 for classes with multiple non-standard applicable methods on
2666 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2667 * on x86 compiler supports stack allocation of results of LIST and
2668 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2669 CMUCL implementation by Gerd Moellmann)
2670 * fixed some bugs revealed by Paul Dietz' test suite:
2671 ** FORMAT strings with both the ~<~:;~> form of the justification
2672 directive and pretty-printing directives cause an error.
2674 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2675 * incompatible change: the internal functions
2676 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2677 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2678 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2679 instead of the old functions.
2680 * new feature: on platforms where "dladdr" is available foreign
2681 function names now appear in backtraces. (based on Helmut Eller's
2683 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2684 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2686 * documentation: ASDF manual is now distributed with SBCL.
2687 * bug fix: SBCL can now load its contributed modules with REQUIRE
2688 even if the system-provided entries have been removed from
2689 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2691 * bug fix: backtraces involving undefined functions or assembly
2692 routines are more informative. (thanks to Brian Downing)
2693 * bug fix: mutually referent alien structures now work correctly.
2694 (reported by Rick Taube)
2695 * bug fix: structures defined by WITH-ALIEN can be referred to
2696 within other definitions in the same WITH-ALIEN.
2697 * bug fix: division operators (MOD, TRUNCATE and the like) with
2698 constant zero divisors and integer dividends no longer generate
2700 * bug fix: provide default methods for INPUT-STREAM-P and
2701 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2702 * bug fix: improve the detection and resolution of MOP metacycles
2703 (where effective method computation depends on the generic function
2704 having its effective method computed). (reported by Bruno Haible)
2705 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2706 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2707 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2708 * bug fix: pathnames with relative directory components can be
2709 represented relative to default pathnames.
2710 * optimization: in taking the GCD of bignums, reduce the two bignums
2711 to approximately the same size (using Euclid's algorithm) before
2712 applying the more sophisticated binary GCD. (thanks to Juho
2714 * optimization: COUNT on bitvectors now operates word-at-a-time.
2715 * optimization: ASH with a positive, but not necessarily constant,
2716 (leftwards) shift, when in a modular context, is compiled to a
2718 * fixed some bugs revealed by Paul Dietz' test suite:
2719 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2720 if the corresponding argument is NIL.
2721 ** FORMAT directives accepting a minpad parameter treat negative
2723 ** literal commas as character parameters to FORMAT directives are
2725 ** literal spaces directly after ~<Newline> directives within a
2726 format-logical-block (~:< ~@:>) do not induce :FILL-style
2727 conditional newlines.
2728 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2729 as specified: it no longer includes conditional newlines).
2730 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2732 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2733 :PER-LINE-PREFIX argument does not evaluate to a string.
2735 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2736 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2737 the manual for details; for now, package locks can be disabled by
2738 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2739 if no major problems are found then it is likely that they will be
2740 compiled in unconditionally.
2741 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2742 unsupported operators on all platforms. To load a shared library
2743 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2744 object file, link it into a shared library outside of SBCL and
2745 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2747 * bug workaround: ROOM T and the GC were not working together
2748 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2749 reporting facility aren't preserved. That reporting has been
2750 disabled, so now until and unless someone figures out how to make it
2751 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2752 * minor incompatible change: as threatened around sbcl-0.8.0, the
2753 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2754 The symbols are also exported from SB-PCL for backwards
2755 compatibility, but more so than before SB-PCL should be treated as
2756 an implementation-internal package.
2757 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2759 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2760 It is known as of this release not to work on the Alpha, however.
2761 * fixed bug #167: errors signalled due to illegal syntax in method
2762 bodies are now more legible.
2763 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2764 designators and can hence be used with TYPEP.
2765 * fixed bug #333: CHECK-TYPE now ensures that the type error
2766 signalled, if any, has the right object to be accessed by
2767 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2768 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2769 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2771 * fixed bug #334: programmatic addition of slots using specialized
2772 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2773 and :ALLOCATION :CLASS slots.
2774 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2775 float exponents. (rereported by Peter Seibel)
2776 * fixed a bug: #\Space (and other whitespace characters) are no
2777 longer considered to be macro characters in standard syntax by
2778 GET-MACRO-CHARACTER.
2779 * fixed bug: initialization of condition class metaobjects no longer
2780 causes an instance of the condition to be created. (reported by
2782 * fixed bug: it is now possible to have slots such that
2783 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2784 description is neither :INSTANCE nor :CLASS.
2785 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2786 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2787 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2788 non-standard SLOT-DEFINITION-ALLOCATION values.
2789 * fixed bugs: various race conditions handling exiting threads.
2790 CL-PPCRE's thread torture test now passes.
2791 * fixed arguably-a-bug: GC time proportional to number of threads in
2792 system even when most of them are idle
2793 * optimization: improved performance of BIT and SBIT on bit-vectors.
2794 * .fasl file incompatibility: The fasl file version number has
2795 been incremented because of changes associated with package locks.
2797 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2798 * minor incompatible change: the system no longer provides
2799 optimization hints (conditions which are TYPEP
2800 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2801 mode; these hints are still emitted when higher SPEED optimization
2803 * new contrib module: a sampling profiler (profiling by statistical
2804 sampling, rather than by instrumenting functions) is available as
2805 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2806 * the behaviour of the standard function ED is now customizeable by
2807 third parties through a hook variable: see ED's documentation
2808 string for information on the protocol.
2809 * the compiler no longer emits efficiency notes for (FUNCALL X)
2810 when the type of X is uncertain under default optimization
2812 * fixed bug 276: mutating a binding of a specialized parameter to a
2813 method to something that is not TYPEP the specializer is now
2815 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2816 exhibit the required behaviour on the x86 platform. (thanks to
2817 Peter van Eynde, Eric Marsden and Bruno Haible)
2818 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2819 even for difficult arguments. (reported by Peter Graves)
2820 * fixed bug 141a: the backquote printer now descends quoted
2822 * fixed another bug in backquote printing: no more destructive
2823 modification of the form's list structure. (reported by Brian
2825 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2826 move between its address being taken and the call to
2827 interrupt_thread, fixing a crashing race condition.
2828 * the SB-POSIX contrib implementation has been adjusted so that it
2829 no longer exhibits ridiculously poor performance when constructing
2830 instances corresponding to C structs.
2832 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2833 * minor incompatible change: the sb-grovel contrib now treats C
2834 structures as alien (in the sense of SB-ALIEN) objects rather than
2835 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2836 has implications for memory management of client code
2837 (sb-grovel-returned objects must now be manually managed) and for
2838 type safety (alien objects now have full types).
2839 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2840 used to control emission of compiler diagnostics, rather than the
2841 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2842 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2843 quality should be considered deprecated.
2844 * install.sh now installs the user manual as well
2845 * (not quite a new documentable feature, but worth considering in
2846 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2847 beginnings of a semantically meaningful condition hierarchy is
2848 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2850 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2851 designator as the defaults argument.
2852 * fixed bug: Displaced arrays whose displaced-to array has become
2853 too small now cause ARRAY-DIMENSION to signal an error, providing
2854 for safer bounds-checking. (reported by Bruno Haible)
2855 * fixed bug: DEFCLASS slot definitions with identical :READER and
2856 :WRITER names now signal a reasonable error. (reported by Thomas
2858 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2860 * fixed bug: Invalid slot specification errors now print correctly.
2861 (thanks to Zach Beane)
2862 * fixed bug 320: Shared to local slot value transfers in class
2863 redefinitions now happen corrently from superclasses as
2864 well. (reported by Bruno Haible)
2865 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2867 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2868 improper lists correctly. (reported by Bruno Haible)
2869 * fixed bug 313: source-transform for <fun-name> was erroneously
2870 applied to a call of a value of a variable with name <fun-name>.
2871 (reported by Antonio Menezes Leitao)
2872 * fixed bug 307: The obsolete instance protocol ensures that
2873 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2874 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2875 remove dead unknown-values globs from the middle of the stack.
2876 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2877 easier to resume long computations after using *BREAK-ON-SIGNALS*
2878 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2879 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2880 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2881 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2882 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2883 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2885 * fixed a (fairly theoretical) bug in string printing: if
2886 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2887 does not have array-element-type equal to the most general string
2889 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2890 function name. (thanks to Nikodemus Siivola)
2891 * fixed bug: compile-time format string checker failed on
2892 non-closed ~{. (reported by Thomas F Burdick)
2893 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2894 don't warn on legal loop code involving more than one aggregate
2895 boolean. (thanks to Nikodemus Siivola)
2896 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2897 in keyword position to MAKE-PACKAGE was not being reported as
2899 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2900 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2902 * fixed bugs 280 and 312: the checking for multiple definitions in a
2903 file is less likely to become confused by uses of inline
2905 * fixed bug: the #S reader macro performs the keyword coercion
2906 specified for slot names. (reported by Kalle Niemitalo)
2907 * fixed bug: lambda lists may contain symbols whose names start with
2908 & but are not lambda-list-keywords; their occurrence triggers a
2910 * fixed bug 321: define-method-combination argument lambda lists do
2911 not cause invalid code to be generated when &optional or &aux
2912 variables have default values. (reported by Bruno Haible)
2913 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2914 have CLOS classes; this appears also to have fixed reported
2915 instability in stack exhaustion detection.
2916 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2917 MUFFLE-WARNING when no associated restart is present is now
2919 * optimization: rearranged the expansion of various defining macros
2920 so that each expands into only one top-level form in a
2921 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2923 * optimization: used a previously little-used slot in symbols to
2924 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2926 * fixed some bugs revealed by Paul Dietz' test suite:
2927 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2929 ** Fixed an optimization bug related to inheritance of initforms
2930 from local to shared slots.
2931 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2932 ** CAST optimizer forgot to flush argument derived type.
2933 ** print/read consistency on floats is now orders of magnitude
2934 more likely. (thanks also to Bruno Haible for a similar report
2936 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2937 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2938 for objects of type REAL. Make it so.
2939 ** SXHASH is specified (infelicitously) to respect similarity,
2940 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2941 it so. (thanks to Markus Ziegler)
2942 ** on the Alpha, the compiler succeeds in compiling functions
2943 returning a known number of arguments greater than 63.
2944 ** fixed handling of invalid NIL arguments in keyword position
2946 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2948 ** provided a readably-printable representation for RANDOM-STATE
2950 ** ensured that pathnames, where they have a namestring, always
2951 print using #P"..." syntax.
2953 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2954 * Support for the forthcoming 2.0 version of the NetBSD kernel
2955 running on x86 hardware has been added. (thanks to Perry
2956 E. Metzger most immediately, and others for their past work)
2957 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2958 current release version; SBCL's OpenBSD support had been broken
2959 since about the time of OpenBSD's switch to ELF binary format.)
2960 * [placeholder for DX summary]
2961 ** user code with &REST lists declared dynamic-extent, under high
2962 speed or space and low safety and debug optimization policy.
2963 * The manual has been converted to Texinfo format and the debugger
2964 chapter from the cmucl manual has been added.
2965 * A facility has been added to extract documentation strings from
2966 sbcl and store them as Texinfo-formatted snippets for inclusion in
2967 the manual (via Texinfo's @include directive)
2968 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2969 the test case to Dave Roberts)
2970 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2971 pointers. (reported by Sean Ross)
2972 * bug fix: PROFILE output is printed nicely even for large numerical
2973 values. (thanks to Zach Beane)
2974 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2975 greater than 32 handle EOF correctly.
2976 * bug fix: on X86 an immediate argument of the IMUL instruction is
2977 correctly printed in disassembly. (thanks to Lutz Euler)
2978 * bug fix: class slots in redefined classes preserve their old
2979 values. (thanks to Bruno Haible and Nikodemus Siivola)
2980 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2981 succeeds. (reported by Marco Baringer)
2982 * fixed some bugs revealed by Paul Dietz' test suite:
2983 ** READ-SEQUENCE now works on ECHO-STREAMs.
2984 ** RATIONALIZE works more according to its specification. (thanks
2987 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2988 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2989 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2990 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2991 should matter to you only if you rebind the printer control
2992 variables and then find you want different bindings in the
2993 debugger than in the ordinary execution of your program.)
2994 * The runtime build system has been tweaked to support building
2995 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2996 assembler and linker. (thanks to Nikodemus Siivola)
2997 * Unbound, undefined, undeclared variables now trigger full
2998 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2999 more often programmer error than deliberate exploitation of undefined
3001 * optimization: the hash algorithm for strings has changed to one
3002 that is less vulnerable to spurious collisions. (thanks to Juho
3004 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3005 needless bounds checking. (thanks to Juho Snellman)
3006 * optimization: implemented multiplication as a modular
3007 (UNSIGNED-BYTE 32) operation on the PPC backend.
3008 * fixed some bugs revealed by Paul Dietz' test suite:
3009 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3011 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3012 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3013 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3015 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3017 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3019 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3020 their output stream on EOF from read.
3021 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3022 have been read to end-of-file.
3023 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3025 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3026 description of determination of which consecutive characters
3028 ** Printing the "Space" character with escaping on now yields "#\\ ",
3029 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3030 ** Reading floating-point numbers with *READ-BASE* set to a number
3031 less than 10 works correctly.
3032 ** Reading floating-point numbers with *READ-BASE* set to a number
3033 more than 10 works correctly.
3034 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3035 the readtable currently in effect.
3037 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3038 * minor incompatible change: parsing of namestrings on a physical
3039 (Unix) host has changed; numbers after the final #\. in a
3040 namestring are no longer interpreted as a version field. This is
3041 intented to be largely invisible to the user, except that the
3042 meaning of the namestring "*.*.*" has changed: it now refers to a
3043 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3044 should usually be replaced by
3045 (make-pathname :name :wild :type :wild :version :wild)
3046 with the added benefit that this is more likely to be portable.
3047 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3048 option to OPEN now signals an error if the file being opened
3049 exists; this may have an impact on existing code.
3050 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3051 signals received, on the PowerPC platforms (both Linux and
3052 Darwin). (thanks to Pierre Mai for pointing out the location of
3054 * several fixes on OS X: The system now builds and runs cleanly on
3055 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3056 (thanks to Brian Mastenbrook)
3057 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3058 second-resolution: integer multiples of 1/3600 between -24 and 24.
3059 (thanks to Vincent Arkesteijn)
3060 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3061 type when called with 1 argument; PEEK-CHAR checked type of
3062 PEEK-TYPE only after having read first character from a
3063 stream. (reported by Peter Graves)
3064 * bug fix: the garbage collector now has much better locality
3065 behaviour, and in particular no longer treats all memory as being
3066 exhausted when many small objects point to each other in a deeply
3068 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3069 recognized as being TYPEP their class.
3070 * bug fix: the PUSHNEW documentation string has been corrected.
3071 (thanks to Vincent Arkesteijn)
3072 * bug fix: defaulting of the value for the last of an atypically
3073 large number of multiple values being bound was not being
3074 performed correctly on the Alpha or PPC platforms
3075 * optimization: implemented multiplication as a modular
3076 (UNSIGNED-BYTE 32) operation on the x86 backend.
3077 * optimization: SEARCH on simple-base-strings can now be open-coded.
3078 (see also contrib/compiler-extras.lisp for inspiration for
3079 teaching the compiler about the Boyer-Moore algorithm).
3080 * value, returned by MAX (and MIN) called with several EQUALP, but
3081 not EQL, arguments now does not depend on compiler settings.
3082 * fixed some bugs revealed by Paul Dietz' test suite:
3083 ** in stack analysis liveness information is propagated from
3084 non-local entry points.
3085 ** pathwise CAST removing failed when the CAST node did not start
3087 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3088 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3090 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3091 host is already defined.
3092 ** RENAME-FILE works on streams instead of signalling an internal
3094 ** PEEK-CHAR uses the current readtable when determining whether
3095 or not a character is whitespace.
3096 ** MERGE-PATHNAMES handles the case when the pathname does not
3097 specify a name while the default-pathname specifies a version.
3098 ** Pathnames now stand a better chance of respecting print/read
3100 ** Attempting to use standardized file system operators with a
3101 pathname with invalid :DIRECTORY components signals a
3103 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3105 ** DIRECTORY on logical pathnames is more correct.
3106 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3107 signal a TYPE-ERROR if their argument is not a stream.
3108 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3109 designator argument does not designate a stream.
3110 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3111 examining the synonym.
3112 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3114 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3115 element-type larger than ([UN]SIGNED-BYTE 32).
3117 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3118 * When built with the :SB-FUTEX feature, threaded builds now take
3119 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3120 for faster/more reliable mutex and condition variable support.
3121 * Incompatible change (but one you probably shouldn't have been using
3122 anyway): the interface and code for arbitrating between multiple
3123 threads in the same user session has been redesigned.
3124 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3125 error when called without an explicit environment argument.
3126 (thanks to Nikodemus Siivola)
3127 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3128 confused about their position. (thanks to Adam Warner and Gerd
3130 * bug fix: Pretty printing backquoted forms with unquotations in the
3131 argument list position of various code constructs such as LAMBDA
3132 now works correctly. (reported by Paul Dietz)
3133 * bug fix: Pretty printing unquotations no longer loses all
3134 stream position information.
3135 * optimization: performance of string output streams is now less
3136 poor for multiple small sequence writes.
3137 * optimization: performance of CSUBTYPEP in the presence of complex
3138 expressions involving CONS and NOT many times has been improved.
3139 (reported by Paul Dietz)
3140 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3142 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3143 streams for the REPL, for the debugger, and so on. (thanks to
3145 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3146 * fixed some bugs revealed by Paul Dietz' test suite:
3147 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3148 is ignored if it is too small, rather than propagating through
3149 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3150 ** extremely complex negations of CONS types were not being
3151 sufficiently canonicalized, leading to inconsistencies in
3153 ** VALUES tranformer lost derived type.
3155 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3156 * fixed a bootstrapping bug: the build process no longer assumes
3157 that the various BOOLE-related constants have the same value in
3158 host and target lisps. (noted by Paul Dietz' test suite on an
3159 SBCL binary built from CLISP)
3160 * The system can now be dynamically linked on the MIPS platform,
3161 which enables dynamic loading of foreign code from Lisp. (thanks
3162 to Ralf Baechle for discussions on the MIPS ABI)
3163 * The system now records debugging information for its own source
3164 files in a filesystem-position-independent manner, relative to
3165 the "SYS" logical host.
3166 * fixed a compiler bug: MV-LET convertion did not check references
3167 to the "max args" entry point. (reported by Brian Downing)
3168 * tweaked disassembly notes to be less confident about proclaiming
3169 some instruction as an LRA. (thanks to Brian Downing)
3170 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3171 now each have their own history, command character, and other
3172 characteristics. (thanks to David Lichteblau)
3173 * fixed some bugs revealed by Paul Dietz' test suite:
3174 ** compiler failure in compiling LOGAND expressions including a
3176 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3177 shift greater than 32.
3178 ** FLUSH-DEST did not mark blocks for type check regeneration.
3179 ** HANDLER-CASE failed to accept declarations in handler clauses
3180 in some circumstances.
3182 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3183 * New code in contrib/sb-introspect (still probably not entirely
3184 stable yet) provides some support for smart Lisp development
3185 environments like SLIME.
3186 * The conditions signalled for errors occurring when loading .fasl
3187 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3188 in a way which should help ASDF recover gracefully.
3189 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3190 stuff has been cleaned up. If you code contrib/ stuff, this might
3191 affect you, and you can look at contrib/README, contrib/STANDARDS,
3192 and/or the 0.8.4.27 diff to check.
3193 * In full calls the compiler now does not generate checks for declared
3194 argument types for all arguments.
3195 * various threading fixes
3196 ** and some experimental patches which didn't make it into
3197 the main tree for this release, but which are shipped in
3198 contrib/experimental-thread.patch as a possible fix for some
3199 failures (deadlock, spinning...) in GC-intensive multithreaded
3201 * fixed PPC build problem (source code incompatibility of different
3202 library versions): added offsetof() hackery which attempts to divine
3203 where glibc maintainers put uc_mcontext today
3204 * fixed bug 282: compiler does not trust type assertions while passing
3205 arguments to a full call.
3206 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3207 &OPTIONAL VALUES type parameter.
3208 * fix bug 214: algorithm for noting rejected templates is now more
3209 similar to that of template seletion. (also reported by rydis on
3211 * fixed bug 141b: printing backquoted information readably and prettily
3212 inserts a space where necessary.
3213 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3214 (CHARACTER 10) are now reported as errors, rather than propagated
3215 as unknown types. (reported by piso on #lisp)
3216 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3217 with values NIL and :ERROR. (thanks to Milan Zamazal)
3218 * fixed bug 191c: CLOS now does proper keyword argument checking as
3219 described in CLHS 7.6.5 and 7.6.5.1.
3220 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3221 longer raise an error; further, using a list as a for-as-arithmetic
3222 counter now raises a meaningful error.
3223 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3224 now understood by sequence creation functions such as MAKE-SEQUENCE
3226 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3227 a STRING-INPUT-STREAM.
3228 * compiler enhancement: SIGNUM is now better able to derive the type
3230 * type declarations inside WITH-SLOTS are checked. (reported by
3232 * fixed some bugs revealed by Paul Dietz' test suite:
3233 ** incorrect optimization of TRUNCATE for a positive first
3234 argument and negative second.
3235 ** compiler failure in let-convertion during flushing dead code.
3236 ** compiler failure while deriving type of TRUNCATE on an
3237 interval, containing 0.
3238 ** ASH of a negative bignum by a negative bignum count now returns
3240 ** intersection of CONS types now canonicalizes properly, fixing
3241 inconsistencies in SUBTYPEP.
3243 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3244 * incompatible change: The --disable-debugger command line
3245 option now clobbers the debugger at a more fundamental
3246 level, by redefining #'INVOKE-DEBUGGER instead of by
3247 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3248 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3249 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3250 enter the debugger REPL and then suffer recursive errors
3251 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3252 while under the new system, BREAK in --disable-debugger mode
3253 terminates the system just as an unhandled error would.
3254 * fixed compiler performance when processing loops with a step >1;
3255 * bug fix: DOCUMENTATION now retrieves generic function
3256 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3257 support has been systematized, and now supports the methods
3258 specified by ANSI, along with a default method and a method for
3259 slot documentation. (reported by Nathan Froyd)
3260 * bug fix: effective methods associated with a generic function are
3261 no longer cached over a change of that generic function's method
3262 combination. (reported by Andreas Fuchs)
3263 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3264 names a non-existent directory. (thanks to Andreas Fuchs)
3265 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3266 the PPC platform, lead to stack corruption; this has been fixed.
3267 (reported by Rainer Joswig)
3268 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3269 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3270 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3271 arithmetic in general, is now much more reliable on the PPC
3273 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3274 platform now returns the right answer.
3275 * optimization: restored some effective method precomputation in
3276 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3277 precomputation is now tunable.
3278 * optimization: compiler-internal data structure use has been
3279 reviewed, and changes have been made that should improve the
3280 performance of the compiler by about 20%.
3281 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3282 simple-base-strings and simple-bit-vectors is improved.
3283 * optimization: the optimization of 32-bit logical and arithmetic
3284 functions introduced in version 0.8.3 on the x86 has been
3285 implemented on the mips, ppc and sparc platforms; an
3286 implementation of the same facility, but for 64-bit arithmetic,
3287 has been added for the alpha.
3288 * microoptimization: the compiler is better able to make use of the
3289 x86 LEA instruction for multiplication by constants.
3290 * bug fix: in some situations compiler did not report usage of
3291 generic arithmetic in (SPEED 3) policy.
3292 * bug 145b fix: compiler used wrong type specifier while converting
3293 MEMBER-types to numeric.
3294 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3296 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3297 index argument now works properly on the Alpha platform.
3298 * bug fix: floating point exception treatment on the Alpha platform
3300 * bug fix: FILE-POSITION works much better on string input and
3301 output streams. (thanks to Nikodemus Siivola)
3302 * bug fix: many threading/garbage collection symptoms sorted.
3303 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3304 might be pseudo-atomic.
3305 * internal change: Stopping for GC is now done with signals not
3306 ptrace. GC is now done in whichever thread wanted it, instead of
3308 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3310 * bug fix: result form in DO is not contained in the implicit
3312 * incompatible change: ICR structure is changed; the value part of
3313 CONTINUATION is now called LVAR; corresponding functions are
3314 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3315 * added type deriver for ISQRT (thanks to Robert E. Brown).
3316 * bug fix: better support for loading from the command line when an
3317 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3319 * fixed some bugs revealed by Paul Dietz' test suite:
3320 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3321 ** ROUND and FROUND now give the right answer when given very
3322 small float arguments.
3323 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3325 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3326 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3327 ** LCM should return a non-negative integer.
3328 ** PARSE-INTEGER returned the index of a terminator instead of the
3329 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3330 ** PARSE-INTEGER returned an incorrect index being applied to a
3332 ** LCM with two arguments of 0 returns 0 rather than signalling
3334 ** unsigned addition of a 32-bit constant with the high bit set no
3335 longer causes an internal compiler error on the x86.
3336 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3337 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3338 with negative last argument.
3339 ** byte specifiers with zero size and position no longer cause
3340 an error during type derivation.
3341 ** bignum multiplication on the Alpha platform now returns the
3343 * porting: The system now builds on SuSE AMD64, although it still
3344 generates a 32-bit binary.
3345 * .fasl file incompatibility: The fasl file version number has
3346 been incremented (because of the changes to internal compiler
3347 data structures referred to above).
3349 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3350 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3351 more accurately, on the Darwin kernel running on PowerPC hardware.
3352 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3353 * Compiler code deletion notes now signal a condition of type
3354 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3355 an associated MUFFLE-WARNING restart.
3356 * The compiler now performs limited argument count validation of
3357 constant format strings in FORMAT, and where appropriate in ERROR,
3358 CERROR and WARN. (thanks to Gerd Moellmann)
3359 * New ASDF-INSTALL contrib can be used for automatic download and
3360 installation of third-party Lisp code from CCLAN or other sites
3362 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3363 which forces another thread to execute a function supplied by the
3365 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3366 now accept and act upon their :ELEMENT-TYPE keyword argument.
3367 (reported by Martin Atzmueller, Edi Weitz)
3368 * bug fix: FILE-POSITION now accepts position designators up to
3369 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3370 is the greater. (thanks to Patrik Nordebo)
3371 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3372 Kalle Olavi Niemitalo)
3373 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3374 printable. (reported by Eric Marsden)
3375 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3376 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3377 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3378 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3379 (thanks to Stig Sandoe)
3380 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3381 UNREAD-CHAR now correctly includes the unread character in the
3382 target sequence. (thanks to Gerd Moellmann)
3383 * bug fix in threaded builds: the system can now be suspended and
3384 resumed by shell job control with minimal disruption.
3385 * bug fixes in times and timezones >2038AD
3386 * better handling of "where is GNU make?" problem in build scripts
3387 (thanks to Nikodemus Siivola)
3388 * new optimization: inside a named function any reference to a
3389 function with the same name is considered to be a self-reference;
3390 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3391 optimization quality.
3392 * new optimization on x86: logical functions and + now have
3393 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3394 used when the result is truncated to 32 bits.
3395 * VALUES declaration is partially enabled.
3396 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3397 * fixed some bugs revealed by Paul Dietz' test suite:
3398 ** The system now obeys the constraint imposed by
3399 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3400 types form a lattice under type intersection.
3401 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3402 ** ASSOC now ignores NIL elements in an alist.
3403 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3404 and (1+ MOST-POSITIVE-FIXNUM) answers.
3405 ** The addition of a method with invalid qualifiers to a generic
3406 function does not cause an error to be signalled immediately;
3407 a warning is signalled, and the error is generated only on
3408 calling the generic function.
3409 * changed .fasl file version number, in part to add type codes for
3410 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3411 obscure ANSI requirements
3413 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3414 * fixed bug 148: failure to inline-expand a local function left
3415 garbage, confusing the compiler.
3416 * fixed bugs 3cd: structure slot readers perform type check if the
3417 slot can have an invalid value (i.e. it is either not initialized
3418 or can be written with a less specific slot writer).
3419 * bug fix: the compiler now traps array references to elements off
3420 the end of an array; previously, the bounds checking in some
3421 circumstances could go off-by-one.
3422 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3424 * type declarations for array element types now obey the description
3425 on the CLHS page "Declaration TYPE", as per discussions on
3426 sbcl-help around 2003-05-08. This means that a declaration
3427 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3428 declaration, all references to BAR will be asserted or assumed
3429 (with THE, so dependent on compiler policy) to involve objects of
3430 type FOO. Note that no such declaration is implied in
3431 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3432 * declared types of functions from the "Conditions"
3433 chapter. (reported by Paul Dietz)
3434 * bug fix: CERROR accepts a function as its first argument.
3435 * bug fix: NTH an NTHCDR accept a bignum as index
3436 arguments. (reported by Adam Warner)
3437 * optimization: character compare routines now optimize comparing
3438 against a constant character. (reported by Gilbert Baumann)
3439 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3440 argument now works properly on the MIPS platform.
3441 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3442 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3443 declared to have a functional type, does not cause an error
3445 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3446 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3447 * fixed bug: if last continuation of a deleted block has a
3448 destination, this destination should be deleted too. (reported by
3450 * fixed a bug in the bootstrap process: the host compiler's values
3451 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3452 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3453 test case from Patrik Nordebo)
3454 * improved the ability of the disassembler on the PPC platform to
3455 provide helpful disassembly notes.
3456 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3457 the class in more cases than previously.
3458 * bug fix: FILE-POSITION now understands :START and :END for
3459 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3460 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3461 8) data. (thanks to David Lichteblau)
3462 * bug fix: it is possible to add a method to a generic function
3463 without lambda list.
3464 * bug fix: reader failed to signal END-OF-FILE inside an
3465 object representation. (reported by Nikodemus Siivola)
3466 * fixed some bugs revealed by Paul Dietz' test suite:
3467 ** LAST and [N]BUTLAST should accept a bignum.
3468 ** condition slot accessors are methods.
3469 ** (VECTOR NIL) is a subtype of STRING.
3471 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3472 * minor incompatible change: some nonsensical specialized lambda
3473 lists (used in DEFMETHOD) which were previously ignored now signal
3475 * minor incompatible change: the system is now aware of the types of
3476 variables in the COMMON-LISP package, and will signal errors for
3477 most violations of these type constraints (where previously they
3478 were silently accepted).
3479 * minor incompatible change: COMPILE-FILE now uses the freedom
3480 afforded (ANSI 3.2.2.3) to use derived function types for
3481 functions defined in the same file. This also permits the system
3482 to warn on static type mismatches and function
3483 redefinition. (Currently it does not work with high DEBUG level.)
3484 * minor incompatible change: VALUES declaration is disabled.
3485 * When issuing notes, the compiler now signals a condition of type
3486 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3487 restart for use in user handlers. It is expected that the
3488 COMPILER-NOTE condition will eventually become a condition
3489 supertype to a hierarchy of note types, which will then be
3490 handleable in a similar fashion. However, at the moment, no such
3491 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3492 but it's an implementation detail, not a classification for the
3494 * Changes in type checking closed the following bugs:
3495 ** type checking of unused values (192b, 194d, 203);
3496 ** template selection based on unsafe type assertions (192c, 236);
3497 ** type checking in branches (194bc).
3498 * A short form of VALUES type specifier has ANSI meaning (it has
3499 increased the number of situations when SBCL cannot perform type
3501 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3502 keywords or constants is permissible.
3503 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3504 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3505 classes. (thanks to Antonio Martinez)
3506 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3507 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3508 argument to a pretty-print stream. Instead, it leaves any such
3509 operations to DESCRIBE-OBJECT methods.
3510 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3512 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3513 lambda lists. (thanks to David Lichteblau)
3514 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3515 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3516 (thanks to Gerd Moellmann)
3517 * fixed bug 246: increased compilation speed of long
3518 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3520 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3522 * DEFCONSTANT now throws a condition of type
3523 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3524 constant to a non-EQL value; CONTINUE and ABORT restarts
3525 respectively change and preserve the value.
3526 * fixed bug 63: The code walker, part of the implementation of CLOS,
3527 is now better at handling symbol macros.
3528 * bug fix: There is no longer an internal implementation type named
3529 CL:LENGTH. (reported by Raymond Toy)
3530 * bug fix: In macro-like defining macros/special operators the
3531 implicit block does not enclose the lambda list.
3532 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3533 enclosed in parentheses) are not suitable as type specifiers, and
3534 their use properly signals an error now.
3535 * bug fix: An argument count mismatch for a type specifier in code
3536 being compiled no longer causes an unhandled error at compile
3537 time, but signals a compile-time warning.
3538 * fixed simple vector readable printing
3539 * bug fix: DESCRIBE takes more care over whether the class
3540 precedence list slot of a class is bound before accessing it.
3541 (reported by Markus Krummenacker)
3542 * bug fix: FORMATTER can successfully compile pretty-printer format
3543 strings which use variants of the ~* directive inside.
3544 * bug fix: SEARCH now applies its TEST predicate to the elements of
3545 the arguments in the correct order. (thanks to Wolfhard Buss)
3546 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3547 in type inference. (thanks to Robert E. Brown)
3548 * bug fix: Reading in symbols with an explicit package name of ""
3549 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3550 * fixed some bugs revealed by Paul Dietz' test suite:
3551 ** NIL is now allowed as a structure slot name.
3552 ** Arbitrary numbers, not just REALs, are allowed in certain
3553 circumstances in LOOP for-as-arithmetic clauses.
3554 ** Multiple class redefinitions before slot access no longer
3555 causes a type error.
3556 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3557 association between the name and a class.
3558 ** Generic functions with non-standard method-combination and over
3559 five methods all of which return constants no longer return NIL
3560 after the first few invocations. (thanks to Gerd Moellmann)
3561 ** CALL-NEXT-METHOD with no arguments now passes the original
3562 values of the arguments, even in the presence of assignment.
3563 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3565 ** DISASSEMBLE works with closures and funcallable instances.
3566 ** ADD-METHOD now returns the generic function, not the new method.
3567 ** FIND-METHOD signals an error if the lengths of the specializers
3568 is incompatible with the generic function, even if the ERRORP
3570 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3571 which its argument is a member.
3572 ** DEFCLASS only redefines the class named by its class-name
3573 argument if that name is the proper name of the class;
3574 otherwise, it creates a new class.
3575 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3576 of the UNBOUND-SLOT condition to the name of the slot.
3577 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3578 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3579 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3580 SLOT-MAKUNBOUND in the specified fashion.
3582 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3583 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3584 cross-compilation host. As a consequence, we can now bootstrap our
3585 way up to SBCL starting with a bare gcc toolchain and human-readable
3586 source code (first the source to CLISP, then the source to SBCL).
3587 * A contributed module containing a partial implementation of the
3588 simple-streams interface has been included. (thanks to Rudi
3590 * A contributed module implementing the RFC1321 Message Digest
3591 Algorithm, known as MD5, has been included.
3592 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3593 no longer has any effect, as the code controlled by this feature
3594 has been deleted. (As far as we know, no-one has ever built using
3595 this feature, and its semantics were confused in any case).
3596 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3597 work on conditions (as required by the ANSI specification),
3598 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3599 expected behaviour on conditions. Users should note, however,
3600 that such behaviour is not required by the ANSI specification,
3601 and so use of this behaviour may render their code unportable.
3602 * fixed some bugs revealed by Paul Dietz' test suite:
3603 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3605 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3606 ** SXHASH on condition objects no longer returns NIL.
3607 ** :ALLOCATION :CLASS slots are better treated; their values are
3608 updated on class redefinition, and initforms inherited from
3609 superclasses are applied.
3610 ** REMOVE-METHOD returns its generic function argument even when
3611 no method was removed.
3612 ** SHARED-INITIALIZE now initializes the values of the requested
3613 slots, including those with :ALLOCATION :CLASS.
3614 ** ALLOCATE-INSTANCE now works on structure classes defined via
3615 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3617 ** SLOT-EXISTS-P now works on conditions, as well as structures
3619 ** MAKE-LOAD-FORM now has the required methods on
3620 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3621 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3622 keyword, and now implements the SLOT-NAMES argument.
3623 ** methods with &OPTIONAL arguments no longer allow too many
3624 arguments to be passed in the call without error.
3625 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3626 option is consistent with the required arguments of the generic
3627 function lambda list.
3628 * bug fix: REQUIRE accepts a string designator. (Thanks to
3630 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3631 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3632 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3633 * bug fix: The compiler now checks for duplicated variables in macro
3635 * bug fix: SETQ on globals returns the correct value.
3636 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3637 not a COMPILER-ERROR (followed by some other strange error on
3638 choosing the CONTINUE restart).
3639 * bug fix: make.sh and friends are now more consistent in the way that
3640 they look for GNU "make".
3642 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3643 * experimental native threads support (on x86 Linux >=2.4 only).
3644 This is not compiled in by default: you need to add :SB-THREAD to
3645 the target features. See the "Beyond ANSI" chapter of the manual
3647 * fix for longstanding nonANSIism: The old distinction between
3648 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3649 The return value from CL:FIND-CLASS is now a CLOS class, and
3650 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3651 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3652 * An interface to the MetaObject Protocol, as described in Kiczales,
3653 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3654 MIT Press, 1991, is available from the SB-MOP package.
3655 * incompatible change: the SB-PCL package should now be considered
3656 a private implementation detail, and no longer a semi-private MOP
3658 * minor incompatible change: due to rearrangement for threads, the
3659 control stack and binding stack are now allocated at arbitrary
3660 addresses instead of being hardcoded per-port. Users affected by
3661 this probably have to be doing advanced things with shared
3662 libraries, and will know who they are.
3663 * minor incompatible change: Previously, all --eval forms used were
3664 processed with READ before any of them were processed with EVAL.
3665 Now each --eval form is processed with both READ and EVAL before
3666 the next --eval form is processed. (Thus package operations like
3667 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3668 work as the user might reasonably expect.)
3669 * minor incompatible change: *STANDARD-INPUT* is now only an
3670 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3672 * minor incompatible change: Y-OR-N-P is now character-oriented,
3673 not line oriented. Also, YES-OR-NO-P now works without errors.
3674 (thanks to Antonio Martinez)
3675 * sb-aclrepl module improvements: an integrated inspector, added
3676 repl features, and a bug fix to :trace command.
3677 * Known functions, which cannot be open coded by the backend, are
3678 considered to be able to check types of their arguments. (fixing
3679 a bug report by Nathan J. Froyd)
3680 * fixed a bug in computing method discriminating functions: It is
3681 now possible to define methods specialized on classes which have
3682 forward-referenced superclasses. (thanks to Gerd Moellmann)
3683 * fixed evaluation order in optional entries (reported by Gilbert
3685 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3686 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3687 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3688 required-by-AMOP NAME argument, as well as CLASS and
3689 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3690 * fixed bug 20: DEFMETHOD can define methods using names that are
3691 not the proper names of classes to designate class specializers.
3692 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3693 Unix file descriptors, instead of blowing up. (thanks to Antonio
3695 * Garbage collection refactoring: user-visible change is that a
3696 call to the GC function during WITHOUT-GCING will not do garbage
3697 collection until the end of the WITHOUT-GCING. If you were doing
3698 this you were probably losing anyway.
3699 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3700 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3701 TYPEP the latter but not the former.
3702 * The compiler issues a full WARNING for calls to undefined functions
3703 with names from the CL package.
3704 * MAP-INTO for a vector destination is open coded. (reported by
3705 Brian Downing on c.l.l)
3706 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3707 documentation string.
3708 * fixed some bugs revealed by Paul Dietz' test suite:
3709 ** COPY-ALIST now signals an error if its argument is a dotted
3711 ** Condition slots are now accessed more correctly in the presence
3712 of multiple initargs for a given slot.
3713 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3714 exclude restarts of the same name associated with a different
3716 ** DEFCLASS of forward-referenced classes with another
3717 forward-referenced class in the superclasses list no longer
3719 ** Condition slots are now initialized once each, not multiple
3720 times. (thanks to Gerd Moellmann)
3721 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3723 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3724 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3725 arguments contain duplicated elements.
3726 ** RESTART-CASE understands local macros.
3727 ** RESTART-CASE associates exactly its own restarts with a condition.
3728 ** ENDP in safe mode checks its argument to be of type LIST.
3729 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3730 in question is unbound.
3731 ** Optimized MAKE-INSTANCE functions no longer cause internal
3732 assertion failures in the presence of duplicate initargs.
3733 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3734 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3735 propagated even in the ctor optimized implementation of
3737 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3739 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3740 * a better implementation of SXHASH on (simple) bit vectors,
3741 measured both in execution speed and in distribution of results
3742 over the positive fixnums, has been installed. Likewise, a better
3743 implementation of EQUAL for simple bit vectors is now available.
3744 * fixed CEILING optimization for a divisor of form 2^k.
3745 * fixed bug 240 (emitting extra style warnings "using the lexical
3746 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3747 by Antonio Martinez)
3748 * fixed SXHASH, giving different results for NIL depending on type
3749 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3750 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3751 variable. (found by Rolf Wester)
3752 * SBCL does not ignore type declarations for special
3753 variables. (reported by rif on c.l.l 2003-03-05)
3754 * some bug fixes in contrib/sb-aclrepl/
3755 * fixed some bugs revealed by Paul Dietz' test suite:
3756 ** a bug in the CONS type specifier, whereby the CAR and CDR
3757 types got intertwined, has been fixed;
3758 ** the type system is now able to reason about the interaction
3759 between INTEGER and RATIO types more completely;
3760 ** APPEND, [N]REVERSE and NRECONC check that those their
3761 arguments, which must be proper lists, are really so;
3762 ** An array specialized to be unable to hold elements has been
3763 implemented, as required -- yes, really -- by ANSI;
3764 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3765 on malformed property lists;
3767 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3768 * incompatible packaging change: in line with Unix convention,
3769 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3770 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3771 * REQUIRE and PROVIDE are now optionally capable of doing something
3772 useful. See the documentation string for REQUIRE.
3773 * infrastructure for a managed SBCL contrib system: contributed
3774 modules in this release include:
3775 ** the ASDF system definition facility;
3776 ** an interface to the BSD Sockets API;
3777 ** an ACL-like convenience interface to the repl;
3778 (thanks to Kevin Rosenberg)
3779 ** an implementation of ROTATE-BYTE, with efficient implementation
3781 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3782 gives a closer approximation to the right answer than previously.
3783 (thanks to Raymond Toy)
3784 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3785 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3786 optional environment arguments, as required by ANSI.
3787 * fixed bugs in other functions taking environment objects, allowing
3788 calls with an explicit NIL environment argument to be compiled
3790 * fixed bug 228: primary return values from
3791 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3792 COMPILE or FUNCTION.
3793 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3794 :TYPE will no longer signal errors on innocuous objects.
3795 * fixed bug 231b: SETQ is better at respecting type declarations in
3796 the lexical environment.
3797 * fixed a bug in DEFCLASS: classes named by symbols with no or
3798 unprintable packages can now be defined.
3799 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3800 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3801 * fixed compiler failure related to checking types of functions.
3802 (reported by Robert E. Brown)
3803 * the compiler is now much more consistent in its error-checking
3804 treatment of bounding index arguments to sequence functions: in
3805 (SAFETY 3) code, errors will be signalled in almost all cases if
3806 invalid sequence bounding indices are passed to functions defined
3807 by ANSI to operate on sequences.
3808 * fixed a bug in the build procedure: documentation of SBCL-specific
3809 packages is now preserved and available in the final Lisp image.
3810 * lifted FDEFINITION lookup out of loops in the implementation of
3811 many list operations. (thanks to Robert E. Brown)
3812 * fixed a bug in the reader: the #n# reader macro now works for
3813 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3814 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3815 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3816 E. Brown and Tony Martinez respectively)
3817 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3818 SLOT-BOUNDP: in particular, it is now able to optimize them much
3819 better, and is now not vulnerable to having packages renamed.
3820 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3821 always called when a slot is not present in an instance. (thanks
3823 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3824 longer signal an error on unreading a character following EOF on
3825 the previous constituent stream. (thanks to Tony Martinez)
3826 * fixed some bugs revealed by Paul Dietz' test suite:
3827 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3828 not just nonnegative fixnums;
3829 ** the logical bit-array operators such as BIT-AND now accept an
3830 explicit NIL for their "opt-arg" argument (to indicate a
3831 freshly-consed result bit-array);
3832 ** ELT now signals an error on an invalid sequence index in safe
3834 ** the type system is now cleverer about negations of numeric
3835 types, and consequently understands the BIGNUM and RATIO types
3837 ** the type system is now cleverer about the interaction between
3838 INTEGER and RATIO types: while bugs still remain, many more
3839 cases are accurately computed;
3840 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3841 if it is in the last clause;
3842 ** CONSTANTLY now correctly returns a side-effect-free function in
3844 ** DECLARE is no longer treated as a special-operator; in
3845 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3846 * incremented fasl file version number due to the change in the
3847 DEFSTRUCT-SLOT-DESCRIPTION structure.
3849 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3850 * minor incompatible change: code processed by the "interpreter" or
3851 EVAL now has a compilation optimization policy of (DEBUG 2)
3852 (changed from (DEBUG 1)) to improve debuggability of interactive
3853 development, and to allow the use of the debug RETURN command in
3855 * an experimental implementation of the RETURN command for the
3856 debugger has been included. (thanks to Frederik Kuivinen)
3857 * fixed bug 62: constraints were not propagated into a loop.
3858 * fixed bug in embedded calls of SORT (reported and investigated by
3860 * fixed some bugs revealed by Paul Dietz' test suite:
3861 ** printing and reading of arrays with some dimensions having
3862 length 0 (thanks to Gerd Moellmann);
3863 ** BOA constructor with &AUX argument without a default value does
3864 not cause a type error;
3865 ** CONSTANTP now returns true for all self-evaluating objects.
3867 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3868 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3869 accessors that are related by inheritance, as specified in the
3870 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3871 Valtteri Vuorikoski)
3872 * The compiler is now able to inline functions that were defined in
3873 a complex lexical environment (e.g. inside a MACROLET).
3874 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3876 * Support for the upcoming FreeBSD-5.0 release has been included.
3877 (thanks to Dag-Erling Smorgrav)
3878 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3879 effect when it is not in a toplevel context.
3880 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3881 stand a better chance of being correct. (thanks to Gerd
3883 * fixed bug in COERCE, which now signals an error on coercing a
3884 rational to a bounded real type which excludes the expected
3886 * The compiler is now able to derive types more accurately from the
3887 COERCE and COMPILE functions.
3888 * fixed bug 223: functional binding is considered to be constant
3889 only for symbols in the CL package.
3890 * fixed bug 231: SETQ did not check the type of a variable being set
3891 (reported by Robert E. Brown)
3892 * A new optimization for MAKE-INSTANCE has been included, fixing
3893 various bugs (including relating to :ALLOCATION :CLASS slots and
3894 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3896 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3897 ** As required by ANSI, LOOP now disallows anonymous collection
3898 clauses such as COLLECT I in conjunction with aggregate boolean
3899 clauses such as THEREIS (= I 1);
3900 ** LOOP now signals an error when any variable is reused in the
3901 same loop (including the potentially useful construct analogous
3902 to WITH A = 1 WITH A = (1+ A);
3903 ** IT is only a special loop symbol within the first clause of a
3904 conditional loop clause;
3905 ** LOOP with a typed iteration variable over a hashtable now
3906 signals a type error iff it should.
3907 * fixed some other bugs revealed by Paul Dietz' test suite:
3908 ** FILE-STREAM now names the class previously known as FD-STREAM;
3909 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3910 argument) no longer signals an error;
3911 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3912 of the slot symbol, rather than using the current package
3913 ((:CONC-NAME "") continues to intern the slot's name in the
3915 * incremented fasl file version number, because of the incompatible
3916 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3917 of the new implementation of DEFINE-COMPILER-MACRO.
3919 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3920 * Support for building SBCL for MIPS platforms running in
3921 little-endian mode has now been checked in, and basic
3922 functionality on said platforms verified.
3923 * minor incompatible change: PCL now records the pathname of a file
3924 in which methods and the like are defined, rather than its
3926 * minor incompatible change: TRUENAME now considers the truename of
3927 a file naming a directory to be the pathname with :DIRECTORY
3928 component indicating that directory.
3929 * minor incompatible change: a NAMED clause in the extended form of
3930 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3931 reason for the previous behaviour is unclear.
3932 * more systematization and improvement of CLOS and MOP conformance
3933 in PCL (thanks to Gerd Moellman and Pierre Mai):
3934 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3936 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3937 primary methods with no specializers;
3938 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3940 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3941 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3942 FORWARD-REFERENCED-CLASSes; error reporting on
3943 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3945 ** SXHASH on CLOS instances now uses a slot internal to the
3946 instance to return different numbers on distinct instances,
3947 while preserving the same return value through invocations of
3949 ** DEFMETHOD signals errors when methods with longer incongruent
3950 lambda lists are added to generic functions;
3951 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3952 CLASS, as specified in AMOP;
3953 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3954 on the order returned by the primary method for classes of
3955 class STANDARD-CLASS;
3956 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3957 * fixed some bugs shown by Paul Dietz' test suite:
3958 ** DOLIST puts its body in TAGBODY;
3959 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3961 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3962 value producing form;
3963 ** if more variables are given to PROGV than values, extra
3964 variables are bound and made to have no value;
3965 ** NSUBSTITUTE on list arguments gets the right answer with
3967 ** ELT signals an error of type TYPE-ERROR when the index argument
3968 is not a valid sequence index;
3969 ** LOOP signals (at macroexpansion time) an error of type
3970 PROGRAM-ERROR when duplicate variable names are found;
3971 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3972 ** FUNCALL of special-operators now cause an error of type
3974 ** PSETQ now works as required in the presence of side-effecting
3975 symbol-macro places;
3976 ** NCONC accepts any object as its last argument;
3977 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3979 ** loop-for-as-package does not require a package to be explicitely
3981 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3983 * fixed bug 166: compiler preserves "there is a way to go"
3984 invariant when deleting code.
3985 * fixed bug 172: macro lambda lists with required arguments after
3986 &REST arguments now cause an error to be signalled. (thanks to
3988 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3989 bug. (thanks to Matthew Danish)
3990 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3992 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3993 arguments are lexically rebound. (thanks to Gerd Moellmann and
3995 * fixed bug 194: error messages are now more informative when there
3996 is no primary method applicable in a call to a generic
3997 function. (thanks to Gerd Moellmann)
3998 * fixed bug in command line argument checking (thanks to Julian
4000 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4001 (thanks to Matthew Danish)
4002 * incremented fasl file version number, because of the
4003 SXHASH-related changes in the layout of CLOS data structures
4005 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4006 * minor incompatible change: The runtime (the Unix executable named
4007 "sbcl") is now much pickier about the .core files it will load.
4008 Essentially it now requires .core files to descend from the same
4009 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4010 as the runtime does. (The intent is to prevent the crashes which
4011 can occur, and which can even be reported as mysterious failures,
4012 when people patch the sources or change the build parameters
4013 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4014 sbcl and .core files.)
4015 * fixed bug: VALUES-LIST is no longer optimized away.
4016 * fixed bug 142: The FFI conversion of C string values to Lisp
4017 string values no longer conses excessively. (thanks to Nathan
4018 Froyd porting Raymond Toy's fix to CMU CL)
4019 * began to systematize and improve MOP conformance in PCL (thanks to
4020 Nathan Froyd, Gerd Moellman and Pierre Mai):
4021 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4023 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4024 ** FINALIZE-INHERITANCE is now called on class finalization;
4025 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4026 argument precedence order.
4027 * fixed bug 202: The compiler no longer fails on functions whose
4028 derived types contradict their declared type.
4029 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4030 so it can be non-toplevel.
4031 * The fasl file version number has changed (because of the new
4032 implementation of DEFMACRO).
4033 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4034 safe code, that any length requirement by their type-specifier
4035 argument is valid. The exceptions to this are described in bug
4037 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4038 functions now check the types of their inputs as required by ANSI.
4039 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4040 introduced symbol is DECLAREd to be SPECIAL.
4041 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4042 * fixed bug: :COUNT argument to sequence functions may be negative
4043 * fixed bug: body of DO-SYMBOLS may contain declarations
4044 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4045 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4046 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4047 symbol macro only once
4048 * fixed printing of call frame when argument list is unavailable
4049 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4050 * compiler no longer signals WARNING on unknown keyword
4053 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4054 * A beta-quality port to the mips architecture running Linux,
4055 based on the old CMUCL backend, has been made. It has been tested
4056 on a big-endian kernel, and works sufficiently well to be able to
4057 rebuild itself; it has not been tested in little-endian mode.
4058 * fixed an inconsistency between gencgc.c and purify.c which made
4059 dumping/loading .core files unreliable
4060 * fixed bug 120a: The compiler now deals correctly with IFs where
4061 the consequent is the same as the alternative, instead of
4062 misderiving the return type. (thanks to Alexey Dejneka)
4063 * fixed bug 113: Logical pathnames are now dumpable (the logical
4064 host is resolved at load-time, throwing an error if it is not
4066 * fixed bug 174: FORMAT's error message is slightly clearer when a
4067 non-printing character is used in a format directive.
4068 * fixed several bugs in compiler checking of type declarations, i.e.
4069 violations of the Python "declarations are assertions" principle
4070 (thanks to Alexey Dejneka)
4071 * fixed several bugs in PCL's error checking (thanks to Gerd
4073 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4075 * fixed bug in compilation of functions as first class values
4076 (thanks to Antonio Martinez-Shotton)
4077 * The compiler's handling TYPE-ERRORs which it can prove will
4078 inevitably happen at runtime has been cleaned up and corrected
4079 in several ways. (thanks to Alexey Dejneka)
4080 * improved argument type checking for various basic arithmetic
4081 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4082 lavished on them in the past that they can be compiled in many
4083 ways in different special cases
4084 * fixed bug 181: compiler checks validity of user supplied type
4086 * cleaned up code flushing in optimization: Function calls which
4087 should signal errors for safety purposes (e.g. which ANSI says
4088 should signal errors when their arguments are of incorrect type)
4089 are no longer optimized away.
4090 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4091 * incremented fasl file version number, because changes in the
4092 implementation of sequence functions like COERCE caused
4093 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4094 in old inline expansions) to become undefined. (Actually these
4095 changes were later undone, so we might very well be binary
4096 compatible with 0.7.7 after all, but leaving the version number
4097 incremented seemed like the simplest and most conservative
4100 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4101 * An alpha-quality port to the parisc architecture running Linux,
4102 based on the old CMUCL backend, has been made. This, even more so
4103 than the other backends, should be considered still a work in
4104 progress; known problems include that the Linux kernel in 64-bit
4105 mode does not propagate the correct sigcontext structure to
4106 userspace, and consequently SBCL on a parisc64 kernel will not
4108 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4109 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4110 suppressed.) Also now that the compiler is looking at declarations
4111 in the environment, it checks optimization declarations as well,
4112 and suppresses inlining when (> DEBUG SPEED).
4113 * More fixes have been made to treatment of floating point exception
4114 treatment and other Unix signals. In particular, floating point
4115 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4116 * The detection and handling of control stack exhaustion (infinite
4117 or very deeply nested recursion) has changed. Stack exhaustion
4118 detection is now done by write-protecting pages at the OS level
4119 and applies at all optimization settings; when found, a
4120 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4121 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4122 be caught using IGNORE-ERRORS.
4123 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4124 correctly when transforming recursive LABELS functions to LETs.
4125 (thanks to Alexey Dejneka)
4126 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4127 that are names of constants or global variables.
4128 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4129 alien routines with docstrings.
4130 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4131 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4133 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4134 (thanks to Eric Marsden)
4135 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4136 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4137 * Bug fix: The SPARC backend can now compile functions involving
4138 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4139 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4140 to a functions expecting a PATHNAME-DESIGNATOR.
4141 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4142 lambda lists. (thanks to Alexey Dejneka)
4143 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4144 functions so that EXPORTing the name of the class doesn't cause
4145 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4146 to Antonio Martinez for reporting this)
4147 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4148 constant-folded without failing an assertion. (thanks to Einar
4149 Floystad Dorum for reporting this)
4150 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4151 types are now dealt with more correctly by the compiler.
4152 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4153 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4154 behaviour analogous to RENAME-FILE. This puts its behaviour more
4155 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4157 * The fasl file version number has changed again. (because of the
4158 bug fix involving the names of PCL MAKE-INSTANCE functions)
4160 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4161 * bug fix: Floating point exceptions are treated much more
4162 consistently on the x86/Linux and PPC/Linux platforms.
4163 * Array initialization with :INITIAL-ELEMENT is now much faster for
4164 cases when the compiler cannot open code the array creation, but
4165 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4166 array accesses have also seen a speed increase.
4167 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4168 specified. (This was at the root of some bad interactions between
4169 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4171 * bug fix: Internal error arguments for undefined functions are now
4172 computed correctly on the PPC/Linux platform.
4173 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4174 Raymond Toy's patch for CMU CL)
4175 * Support for the Solaris 9 operating environment has been included
4176 (thanks to Daniel Merritt)
4177 * A very ugly but hopefully complete draft of the missing FFI chapter
4178 of the manual has been created by reformatting the corresponding
4179 CMU CL manual chapter into (currently very ugly and incoherent)
4180 DocBook and bringing it up to date for SBCL behavior. Thus, the
4181 manual is now essentially complete, at least by my extreme
4182 once-and-only-once standards, whereby it's acceptable to refer to
4183 the doc strings of SB-EXT functions as the primary documentation.
4184 * The fasl file version number has changed again, due to cleanup of
4185 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4186 is no longer a static symbol.)
4188 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4189 * SBCL now builds with OpenMCL (version 0.12) as the
4190 cross-compilation host; also, more progress has been made toward
4191 bootstrapping under CLISP.
4192 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4194 * bug 158 fixed: The compiler can now deal with integer loop
4195 increments different from 1; fixing this turned out also to fix
4197 * bug 169 fixed: no more bogus warnings about using lexical bindings
4198 despite the presence of perfectly good SPECIAL declarations (thanks
4199 to David Lichteblau)
4200 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4201 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4202 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4204 * bug 180 fixed: Method combination specifications no longer ignore
4205 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4206 * bug fix: Structure type predicate functions now check their argument
4207 count as they should.
4208 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4209 correctly. (thanks to Pierre Mai)
4210 * minor incompatible change: The --noprogrammer option is deprecated
4211 in favor of the new --disable-debugger option, which is very similar.
4212 (The major difference is that it takes effect at a slightly different
4213 time at startup, causing handling of errors in --sysinit and
4214 --userinit files will be affected differently.) The
4215 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4216 been added to allow this functionality to be controlled from ordinary
4217 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4218 maintainers, who might want to run non-interactive scripts to
4219 build SBCL cores which will later be used interactively.)
4220 * minor incompatible change: The LOAD function no longer, when given
4221 a wild pathname to load, loads all files matching that pathname.
4222 Instead, an error of type FILE-ERROR is signalled.
4224 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4225 * bug 147 fixed: The compiler preserves its block link/count
4226 invariants more correctly now so that it doesn't crash. (thanks
4228 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4230 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4231 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4232 no-value-for-this-character as NIL (as specified by ANSI).
4233 * HOST-NAMESTRING on physical pathnames now returns a string that is
4234 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4235 (thanks to Christophe Rhodes)
4236 * The Alpha port handles icache flushing more correctly. (thanks to
4238 * More progress has been made toward bootstrapping under CLISP. (thanks
4239 to Christophe Rhodes)
4240 * The fasl file format has changed again, because dynamic loading
4241 on OpenBSD (which has non-ELF object files) motivated some cleanups
4242 in the way that foreign symbols are transformed and passed around.
4243 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4244 is no longer treated as whitespace by the reader, but instead as
4245 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4246 |A
\7fB|, instead of A as it used to.
4248 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4249 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4250 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4251 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4252 this as of 0.7.1.45, but was left out of the previous news section
4253 (thanks to Dan Barlow)
4254 * SBCL now runs on the Solaris operating system on SPARC architectures
4255 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4256 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4257 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4258 * SPARC backend cleanups, allowing builds of cores optimized for V8
4259 and V9 SPARCS, and also emission of code targeted to a particular
4260 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4262 * SBCL is closer to bootstrapping under CLISP, thanks to various
4263 fixes by Christophe Rhodes.
4264 * The fasl file format has changed again, to allow the compiler's
4265 INFO database to support symbol macros.
4266 * The user manual (in doc/) is formatted into HTML more nicely.
4267 (thanks to coreythomas)
4268 * The system is smarter about SUBTYPEP relationships, especially
4269 those involving NOT types (including types such as ATOM which are
4270 represented internally using NOT types). Thus SUBTYPEP is less
4271 likely to return (VALUES NIL NIL) in general, and in particular
4272 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4274 * The fasl file format has changed again, because the internal
4275 representation of types now includes a new slot to support the new
4276 SUBTYPEP-of-NOT-types logic.
4277 * (not a change in the main branch of SBCL, but a related prototype
4278 which can hopefully be merged into the main branch of SBCL in the
4279 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4280 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4281 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4282 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4283 dispatch macro character combinations. (thanks to Alexey Dejneka)
4284 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4285 that superficially look like logical namestrings correctly.
4286 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4288 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4289 default supplied-p) for &optional and &key arguments. (thanks to
4292 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4293 * incompatible change: The compiler is now less aggressive about
4294 tail call optimization, doing it only when (> SPACE DEBUG) or
4295 (> SPEED DEBUG). (This is an incompatible change because there are
4296 programs which relied on the old CMU-CL-style behavior to optimize
4297 away their unbounded recursion which will now die of stack overflow.)
4298 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4299 for non-GENCGC systems has been increased to 20M (since that
4300 seems much closer to the likely performance optimum for modern
4301 systems than the old 4M value was)
4302 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4303 and *DEBUG-PRINT-LEVEL*
4304 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4305 of CMU CL's support for SPARC, and various endianness and other
4306 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4307 * new syntactic sugar for the Unix command line: --load foo.bar is now
4308 an alternate notation for --eval '(load "foo.bar")'.
4310 ** The system now detects stack overflow and handles it gracefully,
4311 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4312 optimization settings. (This is a good thing in general, and
4313 its introduction in this version should be particularly timely
4314 for anyone whose code fails because of suppression of tail
4316 ** The system now hunts for the C variable "environ" in a more
4317 devious way, to avoid segfaults when the C library version differs
4318 between compile time and run time. (thanks to Christophe Rhodes)
4319 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4320 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4321 ** The compiler no longer issues bogus style warnings for undefined
4322 classes in the same source file as the DEFCLASSes which defined
4323 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4325 ** fixes in CONDITION class precedence list for undefined function
4326 errors (thanks to Alexei Dejneka)
4327 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4328 correctly. (thanks to Dan Barlow)
4329 ** portability fixes aiming at bootstrapping under CLISP (thanks
4330 to Dave McDonald and Christophe Rhodes)
4331 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4332 ** fixes in type translation and and type inference (thanks to
4334 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4335 ** various fixes in the new ports (thanks to Dan Barlow)
4336 * several changes related to debugging:
4337 ** suppression of tail recursion, as noted above
4338 ** stack overflow detection, as noted above
4339 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4340 is now the default. (For some time encapsulation has been more
4341 reliable than the breakpoint-based :ENCAPSULATE NIL
4342 implementation, at least on X86 systems; and I just noticed that
4343 encapsulation also seems closer to the spirit of the ANSI
4346 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4348 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4349 up properly again. (There was a packaging bug in 0.7.0 which
4350 left their definitions in SB-SYS::LOAD-FOREIGN and
4351 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4352 vital for most things which interface to C-level interfaces,
4353 like extensions working with sockets or databases or
4354 Perl-compatible regexes or whatever, and the need to fix
4355 this bug is the main reason that 0.7.1 was released so
4357 ** DEFGENERIC is now choosier about the methods it redefines, so that
4358 reLOADing a previously-LOADed file containing DEFGENERICs does
4359 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4360 cycle now works as it should. (thanks to Alexey Dejneka)
4361 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4362 fixed by Christophe Rhodes. (He actually submitted this patch
4363 months ago, and I delayed until after 0.7.0.)
4364 ** Bug 111 (internal compiler confusion about runtime checks on
4365 FUNCTION types) was fixed by Alexey Dejneka.
4366 * Some internal cleanups (getting rid of variables which aren't
4367 needed now that the byte interpreter is gone) caused the fasl
4368 file format number to change again.
4370 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4371 * major incompatible change: The default fasl file extension, i.e. the
4372 default extension for files produced by COMPILE-FILE, has changed
4373 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4375 ** There are many changes in the implementation of the compiler.
4376 SBCL is now essentially a compiler-only implementation of ANSI
4377 Common Lisp. EVAL still "interprets" a few special cases, but
4378 almost all the interesting cases are handled by creating
4379 a LAMBDA expression, calling COMPILE on it, then calling
4380 FUNCALL on the result.
4381 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4382 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4383 Since the code is newer, there might still be some new bugs
4384 (though not as many as before Martin Atzmueller's fixes:-). But
4385 the new code is substantially simpler and clearer, and hopefully
4386 any remaining bugs will be simpler, less fundamental, and more
4387 fixable then the bugs in the old code.
4388 ** The revised compiler is still a little unsteady on its feet.
4390 *** The debugging information it produces (particularly the names
4391 of FUNCTION objects) is sometimes much less useful than what
4392 the old compiler produced.
4393 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4394 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4395 within a MACROLET) has been temporarily weakened.
4396 ** There are new compiler optimizations for various functions:
4397 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4398 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4399 *** the math functions TRUNCATE, FLOOR, and CEILING
4400 *** the function-of-all-trades COERCE
4401 Mostly these should be transparent, but there's one
4402 potentially-annoying problem (bug 117): when the compiler
4403 inline-expands a function and does type analysis on the result,
4404 it can create control paths which have type mismatches, and
4405 when it can't prove that those control paths aren't taken,
4406 it will issue WARNINGs about the type mismatches. This is
4407 a particular problem in practice for the new sequence functions.
4408 It's not clear how this should be fixed, and for now, a
4409 workaround is given in the entry for 117 in the BUGS file.
4410 ** (Because of the interaction between the two previous items --
4411 occasional inlining problems and new inline expansions -- some
4412 of the new sequence function optimizations won't really kick in
4413 completely until debugging information, and then inlining, are
4414 straightened out in some future version.)
4415 * minor incompatible changes:
4416 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4417 DIRECTORY no longer implicitly promotes NIL slots of its
4418 pathname argument to :WILD. In particular, when you ask for the
4419 contents of a directory (which you used to be able to do without
4420 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4421 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4422 ** changes in behavior that ANSI explicitly defines to be
4423 implementation dependent:
4424 *** The new compiler-only implementation still conforms with ANSI,
4425 but acts a little different than before. Besides the obvious
4426 changes in performance tradeoffs (that the cost per form passed
4427 to EVAL has gone up, and the cost per form executed by EVAL
4428 has gone down), the behavior of the system changes a little
4429 because there are no longer any interpreted function objects.
4430 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4431 e.g. doing COMPILE on the output of interactive DEFUN is
4433 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4435 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4436 has changed from (:CL) to NIL.
4437 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4438 e.g. #\Newline and #\Tab, don't have names specified in the
4439 ANSI Common Lisp standard, is now based on their ASCII symbolic
4440 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4441 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4442 are no longer used for output.
4443 ** changes in internal implementation constants:
4444 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4445 4 million. (If your application spends a lot of time GCing and
4446 you have a lot of RAM, you might want to experiment with
4447 increasing it even more.)
4448 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4449 However, almost all old code should still continue to work without
4450 immediate update, as SB-C-CALL is now a (deprecated) nickname
4452 ** Old operator names in the style DEF-FOO are now deprecated in
4453 favor of new corresponding names DEFINE-FOO, for consistency with
4454 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4455 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4456 internal symbols, but a few supported extensions like
4457 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4458 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4459 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4460 etc. as you get deeper into recursive calls to the debugger
4461 command loop, instead of the old "5]", "5]]", "5]]]"
4462 sequence. (I was motivated to do this when squabbles between
4463 ILISP and SBCL left me very deeply nested in the debugger. In the
4464 short term, this change will probably provoke more ILISP/SBCL
4465 squabbles, but hopefully it will be an improvement in the long run.)
4466 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4467 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4468 function, since declaiming return types involving aliens is
4469 (1) annoyingly messy to do by hand and (2) vital to efficient
4470 compilation of code which calls such functions.
4471 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4472 longer reexported by the SB-EXT package. They're solely useful
4473 for alien code, so it seems more logical that you should get
4474 them from the SB-ALIEN package, not in SB-EXT.
4475 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4476 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4477 features. Instead, the code that they used to control is always
4478 built into the system.
4479 * many other bug fixes
4480 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4481 advantage of the new EVAL-WHEN stuff and to clean them up in
4482 general, and they are now more ANSI-compliant in a number of
4483 ways. Martin Atzmueller is responsible for a lot of this.
4484 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4486 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4487 *** correct ERROR type for various file operations
4488 *** some fixes for Lisp streams
4489 *** DEFMETHOD syntax checking
4490 *** changing old weird representation of debug information as
4491 strings (which, among their other deficiencies, don't transform
4492 correctly when you rename packages, and don't change their
4493 print representation when you change things like *PACKAGE*
4494 and *PRINT-LENGTH*) to symbols and lists of symbols
4495 He also made several improvements and fixed several bugs in DESCRIBE.
4496 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4498 *** misbehavior of WRITE-STRING/WRITE-LINE
4499 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4500 and several other LOOP problems as well
4501 *** DIRECTORY when similar filenames are present
4502 *** DEFGENERIC with :METHOD options
4503 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4504 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4505 *** argument ordering in FIND with :TEST option
4506 *** mishandled package designator argument in APROPOS-LIST
4507 *** various problems in the backquote readmacro
4508 *** a bug in APROPOS
4509 *** probably some others that I'm not describing very well here,
4510 since the CVS log documents them by reference to sbcl-devel
4511 messages, and the SourceForge archives aren't working well.:-(
4512 ** Dan Barlow improved the Alpha port (and is making progress on the
4513 PPC port, for those of you who think different).
4514 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4515 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4516 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4517 continues to work on the SPARC port (for those of you in a position
4518 to look down upon our little PC-compatible boxes from a great height).
4519 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4520 and uses that copy, rather than the current dynamic value, when
4521 it's trying to decide whether to truncate output. Thus e.g.
4522 (let ((*print-lines* 50))
4523 (pprint-logical-block (stream nil)
4525 (let ((*print-lines* 8))
4526 (print (aref possiblybigthings i) stream)))))
4527 should now truncate the logical block only at 50 lines, instead of
4528 often truncating it at 8 lines, as it did before.
4529 * The doc/cmucl/ directory, containing old CMU CL documentation
4530 from the time of the fork, is no longer part of the base system.
4531 SourceForge has shut down its anonymous FTP service, and with it
4532 my original plan for distributing the old CMU CL documentation
4533 there. For now, if you need these files you can download an old
4534 SBCL source release and extract them from it.
4535 * The fasl file version number changed again, for dozens of reasons,
4536 some of which are apparent above.
4538 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4539 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4540 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4541 patch, so that DISASSEMBLE output is much nicer.
4542 * The code in the SB-PROFILE package now seems reasonably stable.
4543 I still haven't decided what the final interface should look like
4544 (I'd like PROFILE to interact cleanly with TRACE, since both
4545 facilities use function encapsulation) but if you have a need
4546 for profiling now, you can probably use it successfully with
4547 the current CMU-CL-style interface.
4548 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4549 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4550 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4551 link now returns the dangling link itself, and for similar
4552 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4553 link itself. (In these cases the old code signalled an error and
4554 looped endlessly, respectively.) Thus, DIRECTORY now works even
4555 in the presence of dangling and cyclic symbolic links.
4556 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4557 is now a supported extension again, since the consensus on
4558 sbcl-devel was that it can be useful for ordinary development
4559 work, not just for debugging SBCL itself.
4560 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4561 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4562 that currently-defined functions might be redefined later with
4563 different return types.
4564 * Hash tables can be printed readably, as inspired by CMU CL code
4565 of Eric Marsden and SBCL code of Martin Atzmueller.
4566 * better error handling in CLOS method combination, thanks to
4567 Martin Atzmueller porting Pierre Mai's CMU CL patches
4568 * more overflow fixes for >16Mbyte I/O buffers
4569 * A bug in READ has been fixed, so that now a single Ctrl-D
4570 character suffices to cause end-of-file on character streams.
4571 In particular, now you only need one Ctrl-D at the command
4572 line (not two) to exit SBCL.
4573 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4575 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4576 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4577 does the right thing.
4578 * The implementation of some type tests, especially for CONDITION
4579 types, is now tidier and maybe faster, due to CMU CL code
4580 originally by Douglas Crosher, ported by Martin Atzmueller.
4581 * Some math functions have been fixed, and there are new
4582 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4583 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4584 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4585 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4586 likely to be built into sbcl-0.7.0.)
4587 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4588 CL, ported to SBCL by Martin Atzmueller)
4589 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4590 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4591 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4592 * There's a new slam.sh hack to shorten the edit/compile/debug
4593 cycle for low-level changes to SBCL itself, and a new
4594 :SB-AFTER-XC-CORE target feature to control the generation of
4595 the after-xc.core file needed by slam.sh.
4596 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4597 COMPILE-FILE is no longer supported, so that now every function
4598 gets an entry point, so that block compilation looks a little
4599 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4600 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4601 returns the number of bytes consed since the system started,
4602 rather than the number consed since the first time the function
4603 was called. (The new definition parallels ANSI functions like
4604 CL:GET-INTERNAL-RUN-TIME.)
4605 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4606 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4607 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4608 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4609 * Fasl file version numbers are now independent of the target CPU,
4610 since historically most system changes which required version
4611 number changes have affected all CPUs equally. Similarly,
4612 the byte fasl file version is now equal to the ordinary
4615 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4616 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4617 is no longer recognized. I apologize for this, because it was
4618 listed in SB-EXT as a supported extension, but I found that
4619 its existing behavior was poorly specified, as well as incorrectly
4620 specified, and it looked like too much of a mess to straighten it
4621 out. I have enough on my hands trying to get ANSI stuff to work..
4622 * many patches ported from CMU CL by Martin Atzmueller, with
4623 half a dozen bug fixes in pretty-printing and the debugger, and
4624 half a dozen others elsewhere
4625 * fixed bug 13: Floating point infinities are now supported again.
4626 They might still be a little bit flaky, but thanks to bug reports
4627 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4628 as flaky as they were.
4629 * The --noprogrammer command line option is now supported. (Its
4630 behavior is slightly different in detail from what the old man
4631 page claimed it would do, but it's still appropriate under the
4632 same circumstances that the man page talks about.)
4633 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4634 are now supported, and enabled by default. Thus, the compiler can
4635 handle many floating point and complex operations much less
4636 inefficiently. (Thus e.g. you can implement a complex FFT
4638 * The compiler now detects type mismatches between DECLAIM FTYPE
4639 and DEFUN better, and implements CHECK-TYPE more correctly, and
4640 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4641 thanks to patches from Martin Atzmueller.
4642 * various fixes to make the cross-compiler more portable to
4643 ANSI-conforming-but-different cross-compilation hosts (notably
4644 Lispworks for Windows, following bug reports from Arthur Lemmens)
4645 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4646 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4647 fixed thanks to Pierre Mai's CMU CL patches.
4648 * fixes to keep the system from overflowing internal counters when
4649 it tries to use i/o buffers larger than 16M bytes
4650 * fixed bug 45a: Various internal functions required to support
4651 complex special functions have been merged from CMU CL sources.
4652 (When I was first setting up SBCL, I misunderstood a compile-time
4653 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4654 * improved support for type intersection and union, fixing bug 12
4655 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4656 more obscure bugs as well
4657 * some steps toward byte-compiling non-performance-critical
4658 parts of the system, courtesy of patches from Martin Atzmueller
4659 * Christophe Rhodes has made some debian packages of sbcl at
4660 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4661 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4662 stable, but are nonetheless usable. When he's ready, I'd be happy
4663 to add them to the SourceForge "File Releases" section. (And if
4664 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4665 * new fasl file format version number (because of changes in
4666 internal representation of (OR ..) types to accommodate the new
4667 support for (AND ..) types, among other things)
4669 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4670 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4672 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4674 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4675 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4676 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4677 * DESCRIBE now works on structure objects again.
4678 * Most function call argument type mismatches are now handled as
4679 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4680 know whether the function will be redefined before the call is
4681 executed. (The compiler could flag local calls with full WARNINGs,
4682 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4683 it doesn't keep track of enough information to know whether calls
4684 are local in this sense.)
4685 * Compiler output is now more verbose, with messages truncated
4686 later than before. (There should be some supported way for users
4687 to override the default verbosity, but I haven't decided how to
4688 provide it yet, so this behavior is still controlled by the internal
4689 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4690 src/compiler/ir1util.lisp.)
4691 * Fasl file format version numbers have increased again, because
4692 support for the Gray streams extension changes the layout of the
4693 system's STREAM objects.
4694 * The Gray subclassable streams extension now works, thanks to a
4695 patch from Martin Atzmueller.
4696 * The full LOAD-FOREIGN extension (not just the primitive
4697 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4698 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4699 but like most other programs, it defaults to copying the Unix
4700 environment from the original process instead of starting the
4701 new process in an empty environment.
4702 * Extensions which manipulate the Unix environment now support
4703 an :ENVIRONMENT keyword option which doesn't smash case or
4704 do other bad things. The CMU-CL-style :ENV option is retained
4705 for porting convenience.
4706 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4707 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4709 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4711 * A patch from Martin Atzmueller seems to have solved the SIGINT
4712 problem, and as far as we know, signal-handling now works cleanly.
4713 (If you find any new bugs, please report them!)
4714 * The system no longer defaults Lisp source file names to types
4715 ".l", ".cl", or ".lsp", but only to ".lisp".
4716 * The compiler no longer uses special default file extensions for
4717 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4718 seems to expect a single default extension for all compiled code,
4719 and there's no compelling reason to try to stretch the standard
4720 to allow two different extensions.) Instead, byte-compiled files
4721 default to the same extension as native-compiled files.
4722 * Fasl file format version numbers have increased again, because
4723 a rearrangement of internal implementation packages made some
4724 dumped symbols in old fasl files unreadable in new cores.
4725 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4726 many fewer weird special cases.
4727 * Bug #17 (differing COMPILE-FILE behavior between logical and
4728 physical pathnames) has been fixed, and some related misbehavior too,
4729 thanks to a patch from Martin Atzmueller.
4730 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4731 by Tim Moore, ported to SBCL by Martin Atzmueller.
4732 * Martin Atzmueller fixed several filesystem-related problems,
4733 including bug #36, in part by porting CMU CL patches, which were
4734 written in part by Paul Werkowski.
4735 * More compiler warnings in src/runtime/ are gone, thanks to
4736 more patches from Martin Atzmueller.
4737 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4740 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4742 * DESCRIBE now works on CONDITION objects.
4743 * The debugger now handles errors which arise when trying to print
4744 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4746 * The build system now uses an additional file, customize-target-features.lisp,
4747 to allow local modifications to the target *FEATURES* list. (The point of
4748 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4749 debugging features enabled, without having to worry about propagating it
4750 into everyone's system when I do a "cvs update".) When no
4751 customize-target-features.lisp file exists, the target *FEATURES* list
4752 should be constructed the same way as before.
4753 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4754 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4755 warn about behavior which is undefined under the ANSI spec. Note: This
4756 is specified by ANSI, but it's not very popular with programmers.
4757 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4758 macro in the SBCL sources for an example of a workaround which you
4759 might use to make portable ANSI-standard code which does what you want.
4760 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4761 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4762 when it's used as a non-toplevel form. (This is required in order
4763 to implement the DEFCONSTANT-EQX macro.)
4764 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4765 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4766 funny things, due to bugs in the implementation of EVAL-WHEN
4767 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4768 non-toplevel DEFCONSTANTs are uncommon.)
4769 * The core file version number and fasl file version number have been
4770 incremented, because the old noncompliant DEFCONSTANT behavior involved
4771 calling functions which no longer exist, and because I also took the
4772 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4773 * fixed bug 1 (error handling before read-eval-print loop starts), and
4774 redid debugger restarts and related debugger commands somewhat while
4776 ** The QUIT debugger command is gone, since it did something
4777 rather different than the SB-EXT:QUIT command, and since it never
4778 worked properly outside the main toplevel read/eval/print loop.
4779 Invoking the new TOPLEVEL restart provides the same functionality.
4780 ** The GO debugger command is also gone, since you can just invoke
4781 the CONTINUE restart directly instead.
4782 ** The TOP debugger command is also gone, since it's redundant with the
4783 FRAME 0 command, and since it interfered with abbreviations for the
4785 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4787 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4788 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4789 some porting work by Martin Atzmueller)
4790 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4791 with a boatload of patches which he ported to SBCL. Now that those
4793 ** The system tries to make sure that its low-priority messages
4794 are prefixed by semicolons, to help people who like to use
4795 syntax highlighting in their ILISP buffer. (This patch
4796 was originally due to Raymond Toy.)
4797 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4798 patches originally written by Raymond Toy.
4799 ** The compiler understands coercion between single-value and
4800 multiple-VALUES type expressions better, getting rid of some very
4801 weird behavior, thanks to patches originally by Robert MacLachlan
4802 and Douglas Crosher.
4803 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4804 lambda lists, thanks to a patch originally by Pierre Mai.
4805 ** The system no longer bogusly warns about "abbreviated type
4807 ** The compiler gets less confused by inlining and RETURN-FROM,
4808 thanks to some patches originally by Tim Moore.
4809 ** The system no longer hangs when dumping circular lists to fasl
4810 files, thanks to a patch originally from Douglas Crosher.
4811 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4812 undefined function error.
4813 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4814 in structure slot initforms) for now, documented workaround instead:-|
4815 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4816 * fixed bug 5: added stubs for various Gray stream functions called
4817 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4818 installed, at least appropriate type errors are generated
4819 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4820 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4821 consistently in DEFMETHOD forms.
4822 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4823 it doesn't seem to affect SBCL after all
4824 * The C runtime system now builds with better optimization and many
4825 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4827 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4829 * The system is now under CVS at SourceForge (instead of the
4830 CVS repository on my home machine).
4831 * The new signal handling code has been tweaked to treat register
4832 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4833 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4834 downstream, e.g. in debug-int.lisp, has implicit dependencies
4835 on the unsignedness of integer representation of machine words,
4836 and that caused the system to bomb out with infinite regress
4837 when trying to recover from type errors involving signed values,
4838 e.g. (BUTLAST '(1 2 3) -1).)
4839 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4840 (This was one of the bugs Peter Van Eynde reported back in July.)
4841 * The system now uses code inspired by Colin Walters' O(N)
4842 implementation of MAP (from the cmucl-imp@cons.org mailing
4843 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4844 inline the MAP operation, and there is more than one
4845 sequence argument to the MAP call (so that it can't just
4846 do ETYPECASE once and for all based on the type of the
4847 single sequence argument). (The old non-inline implementation
4848 of the general M-argument sequence-of-length-N case required
4849 O(M*N*N) time when any of the sequence arguments were LISTs.)
4850 * The QUIT :UNIX-CODE keyword argument has been renamed to
4851 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4852 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4854 * Raymond Wiker's patches to port dynamic loading from Linux to
4855 FreeBSD have been added.
4856 * The BUGS file is now more nearly up to date, thanks in large part
4857 to Martin Atzmueller's review of it.
4858 * The debugger now flushes standard output streams before it begins
4859 its output ("debugger invoked" and so forth).
4860 * The core version number and fasl file version number have both
4861 been incremented, because of incompatible changes in the layout
4863 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4864 used to not be called for a saved Lisp image.)
4865 * Martin Atzmueller's version of a patch to fix a compiler crash,
4866 as posted on sbcl-devel 13 September 2000, has been installed.
4867 * Instead of installing Martin Atzmueller's patch for the
4868 compiler transform for SUBSEQ, I deleted the compiler transform,
4869 and transforms for some similar consing operations.
4870 * A bug in signal handling which kept TRACE from working on OpenBSD
4872 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4873 away by constant folding
4874 * The system now defines its address space constants in one place
4875 (in the Lisp sources), and propagates them automatically elsewhere
4876 (through GENESIS and the sbcl.h file). Therefore, patching the
4877 address map is less unnecessarily tedious and error-prone. The
4878 Lisp names of address space constants have also been systematized.
4879 * CVS tags like dollar-Header-dollar have been removed from
4880 the sources, because they have never saved me trouble and
4881 they've been source of trouble working with patches and other
4882 diff-related operations.
4883 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4884 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4886 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4888 * The system has been ported to OpenBSD.
4889 * The system now compiles with a simple "sh make.sh" on the systems
4890 that it's supported on. I.e., now you no longer need to tweak
4891 text in the target-features.lisp-expr and symlinks in src/runtime/
4892 by hand, the make.sh takes care of it for you.
4893 * The system is no longer so grossly inefficient when compiling code
4894 involving vectors implemented as general (not simple) vectors (VECTOR T),
4895 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4896 which dares to use the various sequence functions on non-simple
4897 vectors, takes less of a performance hit.
4898 * There is now a primitive type predicate VECTOR-T-P
4899 to test for the (VECTOR T) type, so that e.g.
4900 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4901 can now be compiled with some semblance of efficiency. (The old code
4902 turned the type declaration into a full call to %TYPEP at runtime!)
4903 * AREF on (VECTOR T) is still not fast, since it's still compiled
4904 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4905 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4906 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4907 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4908 without making full calls to SUBTYPEP at runtime.
4909 (Some analogous efficiency issues for non-simple vectors specialized to
4910 element types other than T, or for non-simple multidimensional arrays,
4911 have not been addressed. They could almost certainly be handled the
4912 same way if anyone is motivated to do so.)
4913 * The changes in array handling break binary compatibility, so
4914 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4915 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4916 instead of (VALUES T T).
4917 * By following the instructions that Dan Barlow posted to sbcl-devel
4918 on 2 July 2000, I was able to enable primitive dynamic object
4919 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4920 functionality is not implemented (since it calls ld to resolve
4921 library references automatically, requiring RUN-PROGRAM for its
4922 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4923 try to resolve library references) is now supported.
4924 * The system now flushes the standard output streams when it terminates,
4925 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4926 them at several other probably-convenient times, e.g. in each pass of
4927 the toplevel read-eval-print loop, and after evaluating a form given
4928 as an "--eval" command-line option. (These changes were motivated by a
4929 discussion of stream flushing issues on cmucl-imp in August 2000.)
4930 * The source transform for TYPEP of array types no longer assumes
4931 that an array whose element type is a not-yet-defined type
4932 is implemented as an array of T, but instead punts, so that the
4933 type will be interpreted at runtime.
4934 * There is now some support for cross-compiling in make.sh: each of
4935 the phases of make.sh has its own script. (This should be transparent
4936 to people doing ordinary, non-cross-compile builds.)
4937 * Since my laptop doesn't have hundreds of megabytes of memory like
4938 my desktop machine, I became more motivated to do some items on
4939 my to-do list in order to reduce the size of the system a little:
4940 ** Arrange for various needed-only-at-cold-init things to be
4941 uninterned after cold init. To support this, those things have
4942 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4943 symbols with such names are now uninterned after cold init).
4944 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4945 fasl files for cold load.
4946 ** Remove the old compiler structure pooling code (which used to
4947 be conditional on the target feature :SB-ALLOC) completely.
4948 ** Redo the representation of some data in cold init to be more compact.
4949 (I also looked into supporting byte compiled code at bootstrap time,
4950 which would probably reduce the size of the system a lot, but that
4951 looked too complicated, so I punted for now.)
4952 * The maximum signal nesting depth in the src/runtime/ support code has
4953 been reduced from 4096 to 256. (I don't know any reason for the very
4954 large old value. If the new smaller value turns out to break something,
4955 I'll probably just bump it back up.)
4956 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4958 * Many, many bugs reported by Peter Van Eynde have been added to
4959 the BUGS list; some have even been fixed.
4960 * While enabling dynamic object file loading, I tried to make the
4961 code easier to understand, renaming various functions and variables
4962 with less ambiguous names, and changing some function calling
4963 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4964 * While trying to figure out how to do the OpenBSD port, I tried to
4965 clean up some of the code in src/runtime/. In particular, I dropped
4966 support for non-POSIX signal handling, added various comments,
4967 tweaked the code to reduce the number of compilation warnings, and
4968 renamed some files to increase consistency.
4969 * To support the new automatic configuration functionality in make.sh,
4970 the source file target-features.lisp-expr has been replaced with the
4971 source file base-target-features.lisp-expr and the machine-generated
4972 file local-target-features.lisp-expr.
4973 * fixed a stupid quoting error in make.sh so that using CMU CL
4974 "lisp -batch" as cross-compilation host works again
4976 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4978 * DESCRIBE no longer tries to call itself recursively to describe
4979 bound/fbound values, so that it no longer fails on symbols which are
4980 bound to themselves (like keywords, T, and NIL).
4981 * DESCRIBE now works on generic functions.
4982 * The printer now prints less-screwed-up representations of closures
4983 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4984 * A private symbol is used instead of the :EMPTY keyword previously
4985 used to mark empty slots in hash tables. Thus
4986 (DEFVAR *HT* (MAKE-HASH-TABLE))
4987 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4988 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4989 now does what ANSI says that it should. (You can still get
4990 similar noncompliant behavior if bang on the hash table
4991 implementation with all the symbols you get back from
4992 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4993 This breaks binary compatibility, since tests for equality to
4994 :EMPTY are wired into things like the macroexpansion of
4995 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4997 * There's now a minimal placeholder implementation for CL:STEP,
4998 as required by ANSI.
4999 * An obscure bug in the interaction of the normal compiler, the byte
5000 compiler, inlining, and structure predicates has been patched
5001 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5002 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5004 * Missing ordinary arguments in a macro call are now detected even
5005 when the macro lambda list contains &KEY or &REST.
5006 * The debugger no longer complains about encountering the top of the
5007 stack when you type "FRAME 0" to explicitly instruct it to go to
5008 the top of the stack. And it now prints the frame you request even
5009 if it's the current frame (instead of saying "You are here.").
5010 * As specified by ANSI, the system now always prints keywords
5011 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5013 * The default initial SIZE of HASH-TABLEs is now smaller.
5014 * Type information from CLOS class dispatch is now propagated
5015 into DEFMETHOD bodies, so that e.g.
5016 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5018 is now basically equivalent to
5019 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5020 (DECLARE (TYPE SINGLE-FLOAT X))
5022 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5023 operation, without having to do run-time type dispatch.
5024 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5025 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5026 * Since I don't seem to be making big file reorganizations very often
5027 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5028 is overflowing my ability to conveniently back them up), I've finally
5029 checked the system into CVS. (The CVS repository is on my home system,
5030 not at SourceForge -- putting it on SourceForge might come later.)
5031 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5032 high-level GC-NOTIFY-FOO functions send their output. (There's
5033 still very little control of where low-level verbose GC functions
5034 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5035 less than it used to -- the GC-NOTIFY-FOO functions are now under
5036 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5037 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5038 in only one place in the source code, and propagates it automatically
5039 everywhere that it's needed. Thus e.g. when I bump the version from
5040 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5041 * The C source files now include boilerplate legalese and documentation
5042 at the head of each file (just as the Lisp source files already did).
5043 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5044 to his page will be replaced with a link to his new CLiki service.
5046 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5048 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5049 * The build process now looks for GNU make under the default name "gmake",
5050 instead of "make" as it used to. If GNU make is not available as "gmake"
5051 on your system, you can change this default behavior by setting the
5052 GNUMAKE environment variable.
5053 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5054 can build without error under CMU CL.
5056 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5058 * There is now a partial SBCL user manual (with some new text and some
5059 text cribbed from the CMU CL manual).
5060 * The beginnings of a profiler have been added (starting with the
5061 CMU CL profiler and simplifying and cleaning up). Eventually the
5062 main interface should be through the TRACE macro, but for now,
5063 it's still accessed through vaguely CMU-CL-style functions and macros
5064 exported from the package SB-PROFILE.
5065 * Some problems left over from porting CMU CL to the new
5066 cross-compilation bootstrap process have been cleaned up:
5067 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5068 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5069 part when getting rid of the compiler *BACKEND* stuff.)
5070 ** The value of *NULL-TYPE* was screwed up, because it was
5071 being initialized before the type system knew the final
5072 definition of the 'NULL type. This screwed up several key
5073 optimizations in the compiler, causing inefficiency in all sorts
5074 of places. (I found it because I wanted to understand why
5075 GET-INTERNAL-RUN-TIME was consing.)
5076 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5077 PROCLAIM FTYPE information. Unfortunately this broke binary
5078 compatibility again, since now the forms output by DEFGENERIC
5079 to refer to functions which didn't exist in 0.6.3.
5080 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5081 can use the new (as of 0.6.3) transform for SOME into MAP into
5083 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5084 values to (INTEGER 0 1000000), so that the time code will no longer
5085 occasionally get blown up by Linux returning 1000000 microseconds
5086 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5087 its output conform to the ANSI spec. (Alas, this makes its output
5088 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5089 * A full call to MAP NIL with a single sequence argument no longer conses.
5090 * fixes to problems pointed out by Martin Atzmueller:
5091 * The manual page no longer talks about multiprocessing as though
5092 it were currently supported.
5093 * The ILISP support patches have been removed from the distribution,
5094 because as of version 5.10.1, ILISP now supports SBCL without us
5095 having to maintain patches.
5096 * added a modified version of Raymond Toy's recent CMU CL patch for
5097 EQUALP comparison of HASH-TABLE
5099 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5101 * The system still can't cross-compile itself with
5102 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5103 entails), but at least it can compile more of itself that way
5104 than it used to be able to, and various buglets which were uncovered
5105 by trying to cross-compile itself that way have now been fixed.
5106 * This release breaks binary compatibility again. This time
5107 at least I've incremented the FASL file format version to 2, so that the
5108 problem can be detected reliably instead of just causing weird errors.
5109 * various new style warnings:
5110 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5111 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5112 ** using the lexical binding of a variable named in the *FOO* style
5113 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5114 as specified by ANSI.
5115 * *RANDOM-STATE* is no longer automatically initialized from
5116 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5117 default behavior of the system is to repeat its behavior every time
5118 it's run. If you'd like to change this behavior, you can always
5119 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5120 old convention there was no comparably easy way to get the system to
5121 repeat its behavior every time it was run.
5122 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5123 FTYPE declarations has been removed, in favor of their ANSI
5124 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5125 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5126 the types of their sequence arguments can be determined at compile time.
5127 This is done through a new open code expansion for MAP which eliminates
5128 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5129 argument types can be determined at compile time.
5130 * The optimizer now transforms COERCE into an identity operation when it
5131 can prove that the coerced object is already of the correct type. (This
5132 can be a win for machine generated code, including the output of other
5133 optimization transforms, such as the MAP transform above.)
5134 * Credit information has been moved from source file headers into CREDITS.
5135 * Source file headers have been made more standard.
5136 * The CASE macro now compiles without complaining even when it has
5139 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5141 * (Note that the way that the PCL macroexpansions were rewritten
5142 to accommodate the change in DEFGENERIC below breaks binary
5143 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5144 not run under sbcl-0.6.2. Once we get out of alpha releases,
5145 i.e. hit release 1.0.0, we'll probably try to maintain binary
5146 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5147 and sbcl-1.4.4. Until then, however, it might be fairly common
5148 for maintenance releases to break binary compatibility.)
5149 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5151 * The reporting of unhandled signals has been changed to print some
5152 explanatory text as well as the report form. (Previously only
5153 the report form was printed.)
5154 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5155 it defines, so that the compiler no longer issues undefined function
5156 warnings for compiled-but-not-yet-loaded generic functions.
5157 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5158 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5159 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5160 section of the ANSI spec are supported.
5161 * The "" nickname for the "KEYWORD" package has been removed.
5162 The reader still handles symbol tokens which begin with a package marker
5163 as keywords, but it doesn't expose its mechanism for doing so in the
5164 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5165 * The system now issues STYLE-WARNINGs for contradictory TYPE
5166 proclamations. (Warnings for contradictory FTYPE proclamations would
5167 be nice too, but those can't be done usefully unless the type system
5168 is made smarter about FUNCTION types.)
5169 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5170 systematized, so that "*target-*.lisp is supposed to exist only on the
5171 target and imply that there's a related file which exists on the
5172 host, and *host-*.lisp is supposed to exist only on the host and imply
5173 that there's a related file which exists on the target. This involves a
5174 lot of renaming. Hopefully the acute confusion caused by the renaming
5175 will be justified by the reduction in chronic confusion..
5176 ** runtime-type.lisp -> early-target-type.lisp
5177 ** target-type.lisp -> late-target-type.lisp
5178 ** early-host-format.lisp -> early-format.lisp
5179 ** late-host-format.lisp -> late-format.lisp
5180 ** host-error.lisp -> misc-error.lisp
5181 ** early-error.lisp -> early-target-error.lisp
5182 ** late-error.lisp -> late-target-error.lisp
5183 ** host-defboot.lisp -> early-defboot.lisp
5184 ** code/misc.lisp -> code/target-misc.lisp
5185 ** code/host-misc.lisp -> code/misc.lisp
5186 ** code/numbers.lisp -> code/target-numbers.lisp
5187 ** code/early-numbers.lisp -> numbers.lisp
5188 ** early-host-type.lisp -> early-type.lisp
5189 ** late-host-type.lisp -> late-type.lisp
5190 ** host-typep.lisp -> typep.lisp
5191 ** load.lisp -> target-load.lisp
5192 ** host-load.lisp -> load.lisp
5193 ** host-disassem.lisp -> disassem.lisp
5194 ** host-insts.lisp -> insts.lisp
5195 ** byte-comp.lisp -> target-byte-comp.lisp
5196 ** host-byte-comp.lisp -> byte-comp.lisp
5197 ** host-signal.lisp -> signal.lisp
5198 ** host-defstruct.lisp -> defstruct.lisp
5199 ** late-target-type.lisp -> deftypes-for-target.lisp
5200 Furthermore, several other previously target-only files foo.lisp (e.g.
5201 hash-table.lisp and random.lisp) have been split into a target-and-host
5202 foo.lisp file and a target-only target-foo.lisp file, with their key type
5203 definitions in the target-and-host part, so that the cross-compiler will
5204 know more about target types.
5205 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5206 gone away. In their place are various *BACKEND-FOO* variables
5207 corresponding to the slots of the old structure.
5208 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5209 into the target SBCL has been fixed.
5210 * The chill.lisp system for loading cold code into a running SBCL
5212 * Support for the CMU CL "scavenger hook" extension has been removed.
5213 (It was undocumented and unused in the CMU CL sources that SBCL was
5214 derived from, and stale in sbcl-0.6.1.)
5215 * Various errors in the cross-compiler type system were detected
5216 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5217 (enabling various consistency checks). Many of them were fixed,
5218 but some hard problems remain, so the compiler is back to
5219 running without *TYPE-SYSTEM-INITIALIZED* for now.
5220 * As part of the cross-compiler type system cleanup, I implemented
5221 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5222 * I have started adding UNCROSS calls throughout the type system
5223 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5224 on cross-compiler input files will be able to go away, and various
5226 * CONSTANTP now returns true for quoted forms (as explicitly required
5229 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5231 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5232 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5233 (MAKE-LIST -1). In the longer term, it ought to become true
5234 that declarations are assertions even at SAFETY 1. For now, it's not
5235 quite true even at SAFETY 3, but it's at least more nearly true..
5236 (Note that this change seems to increases the size of the system by
5237 O(5%) and to decrease the speed of the compiler by 20% or more.)
5238 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5239 for the problem of printing dozens of lines of distracting information
5240 about low-level system machinery as part of the top stack frame
5241 on entry to the debugger when an undefined function was called.
5242 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5243 is not reset to COMMON-LISP-USER.
5244 * Compilation of stuff related to dyncount.lisp has been made conditional
5245 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5246 smaller. The various dyncount-related symbols have been moved into
5247 a new "SB-DYNCOUNT" package.
5248 * tty-inspect.lisp has been renamed to inspect.lisp.
5249 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5250 feature has gone away. (When we eventually port to other flavors of
5251 libc and/or Unix, we'll try to make the differences between flavors
5252 invisible at the user level.)
5253 * Various other *FEATURES* tags, and/or their associated conditionals,
5254 have been removed if obsolescent, or given better documentation, or
5255 sometimes given more-mnemonic names.
5257 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5259 * tidied up "make.sh" script
5260 * tidied up system directory structure
5261 * better "clean.sh" behavior
5262 * added doc/FOR-CMUCL-DEVELOPERS
5263 * many many small tweaks to output format, e.g. removing possibly-confusing
5264 trailing #\. character in DESCRIBE-INSTANCE
5265 * (EQUALP #\A 'A) no longer signals an error.
5266 * new hashing code, including EQUALP hashing
5267 * tidied up Lisp initialization and toplevel
5268 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5269 * command line argument processing
5270 * added POSIX-GETENV function to deal with Unix-ish environment variables
5271 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5272 terminating SBCL on EOF
5273 * non-verbose GC by default
5274 * There is no more "sbcl" shell script; the sbcl file is now the C
5275 runtime executable (just like CMU CL).
5276 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5278 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5279 symbol and package information as Lisp native symbol and package objects
5280 instead of strings naming symbols and strings naming packages. This way,
5281 whenever packages are renamed (as in warm init), debug information is
5282 transformed along with everything else.
5283 * tweaked the optimization policy declarations which control the building
5284 of SBCL itself. Now, among other things, the system no longer saves
5285 source location debugging information. (This helps two problems at once
5286 by reducing SBCL size and by keeping SBCL from trying to look for its
5287 sources -- which may not exist -- when reporting errors.)
5288 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5289 debugging and testing purposes
5290 * cleaned up printing, making the printer call PRINT-OBJECT for
5291 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5292 methods, giving nearly-ANSI behavior
5293 * converted almost all special variables to use *FOO* naming convention
5294 * deleted PARSE-TIME functionality, since it can be done portably
5295 * moved some files out of cold init into warm init
5296 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5298 * regularized formatting of source files
5299 * added an install.sh script
5300 * fixed ridiculous memory usage of cross-compiler by making
5301 compiler/alloc.lisp not try to do pooling unless it can hook
5302 itself into the GC of the cross-compilation host. Now the system
5303 builds nicely on my old laptop.
5304 * added :SB-ALLOC in target-features.lisp-expr
5305 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5306 was not implemented)
5307 * re-did condition handling and note reporting in the compiler. Notes
5308 are no longer handled by signalling conditions. Style warnings
5309 and warnings are handled more correctly and reported in such a way
5310 that it's easy to find one or the other in your output (so that you
5311 can e.g. figure out which of many problems caused COMPILE-FILE to
5313 * changed the severity of several compiler warnings from full WARNING
5314 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5315 compiler note reporting so that it doesn't use the condition system
5316 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5317 COMPILE-FILE command)
5318 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5319 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5320 no longer supported, since their implementation was deeply intertwingled
5321 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5322 * removed bogus "support" for compiler macros named (SETF FOO), and
5323 removed the compiler macro for SETF INFO (but only after making a fool
5324 of myself on the cmucl-imp mailing list by posting a bogus patch for
5325 DEFINE-COMPILER-MACRO..)
5326 * Compiled files containing forms which have side effects on the Lisp
5327 reader (such as DEFPACKAGE forms) are now handled more correctly.
5328 (Compiler queuing of top level lambdas has been suppressed by setting
5329 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5330 * deleted various currently-unused source files, e.g. gengc.lisp. They
5331 may be added back at some point e.g. when porting to other architectures,
5332 but until they are it's distracting to distribute them and to try to
5334 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5335 there were so many of them they're just distractions, and UNCROSS is
5336 known to be able to handle the current sources
5337 * moved PROFILE functionality into TRACE, so that it will be clear
5338 how the wrapping and unwrapping of functions when you profile them
5339 interacts with the wrapping and unwrapping of functions when you
5340 trace them. (Actually, the functionality isn't there yet, but at least
5341 the interface specification is there. Hopefully, the functionality will
5342 arrive with some future maintenance release.)
5343 * removed host-oops.lisp
5344 * changed signature of QUIT function to allow UNIX-CODE argument
5345 * fixed READ-SEQUENCE bug
5346 * tweaked verbose GC output so that it looks more like the progress
5347 output that ANSI specifies for functions like LOAD
5348 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5349 * added <http://sbcl.sourceforge.com> to the banner information printed by