1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 * optimization: more efficient type-checks for FIXNUMs when the value
3 is known to be a signed word on x86 and x86-64.
4 * improvement: failure to provide requested stack allocation compiler notes
5 provided in all cases (requested stack allocation not happening without a
6 note being issued is now considered a bug.)
7 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
8 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
9 (thanks to Paul Khuong)
11 changes in sbcl-1.0.29 relative to 1.0.28:
12 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
13 https://bugs.launchpad.net/sbcl
14 Bugs can be reported directly there, or by sending email to
15 sbcl-bugs@lists.sourceforge.net
16 (no subscription required.)
17 * minor incompatible change: under weak type checking policy integer
18 types are weakened less aggressively.
19 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
20 allowed to return, which causes SBCL to quit with exit status 0. Previously
21 if the function returned with a small integer return value, that value
22 was accidentally reused as the exit status.
23 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
24 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
25 :HASH-FUNCTION argument. Refer to user manual for details.
26 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
28 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
29 microseconds since the Unix epoch on all platforms.
30 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
31 allows the compiler to safely elide boundedness checks for special
33 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
34 the symbol, prohibits both lexical and dynamic binding. This is mainly an
35 efficiency measure for threaded platforms, but also valueable in
37 * new feature: UNC pathnames are now understood by the system on Windows.
38 * optimization: the compiler uses a specialized version of FILL when the
39 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
41 * optimization: accesses to potentially non-simple arrays where element type
42 is known are 50% faster.
43 * optimization: compiler now generates faster array typechecking code.
44 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
46 * optimization: multidimensional array accesses in the absence of type
47 information regarding array rank are approximately 10% faster due to
48 open coding of ARRAY-RANK.
49 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
50 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
52 * optimization: result of call to VECTOR can now be stack allocated.
53 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
54 as long as the resulting array is one-dimensional and has a known
55 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
56 length of the list matches the known length of the vector does not
57 allocate the list as an intermediate step. Ditto for VECTOR and simple
59 * optimization: MAKE-ARRAY can now stack allocate in the presence of
60 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
61 known element type, and is known to be simple and one dimensional.
62 * improvement: SBCL now emits a compiler note where stack allocation was
63 requested but could not be provided (not in all cases, unfortunately)
64 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
65 * improvement: pretty-printing loop has been implemented properly. (thanks
67 * documentation: CLOS slot typechecing policy has been documented.
68 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
69 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
70 pointer, leading to memory faults. (thanks to Bart Botta)
71 * bug fix: better floating point exception handling on x86/OpenBSD.
72 (thanks to Josh Elsasser)
73 * bug fix: exit status from QUIT when called under --script was lost
74 (reported by Hubert Kauker)
75 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
76 same implementation of FILL to initialize the array, even if a more
77 efficient one was available (reported by Stas Boukarev, thanks to
79 * bug fix: potential miscompilation of array stack allocation on x86 and
80 x86-64. (reported by Time Tossavainen)
81 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
82 result in their subforms being treated as top level forms. (reported by
84 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
85 than a machine register could leave garbage in the high bits of the
86 result register (bug 316325).
87 * bug fix: disable address space randomization Linux/x86-64 as well,
88 not just x86-64. (reported by Ken Olum)
89 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
90 generate incorrect code.
91 * bug fix: #201; type inference for CONS and ARRAY types could derive
92 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
93 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
94 could not be assigned to or bound with PROGV. (reported by Lorenz
96 * bug fix: the value of CL:- in the inspector was the previous expression
97 evaluated rather than the expression being evaluated.
98 * bug fix: constants can no longer be locally declared special.
99 * bug fix: signals delivered to threads started from foreign land (read:
100 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
101 thread by blocking all signals and resignalling.
102 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
103 from :INITFORM, if any.
105 changes in sbcl-1.0.28 relative to 1.0.27:
106 * a number of bugs in cross-compilation have been fixed, with the ultimate
107 result that building under (at least) clisp should be much more reliable.
108 * minor incompatible changes: echo-streams now propagate unread-char to the
109 underlying input stream, and no longer permit unreading more than one
111 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
112 frames, allowing for instance more reliable backtraces.
113 * improvement: the debugger REPL can now reference lexical variables
114 by name directly for code compiled with (DEBUG 3).
115 * improvement: errors from malformed declarations now have better source
116 paths associated with them. (thanks to Tobias Rittweiler)
117 * optimization: faster local calls on x86/x86-64
118 * bug fix: some error messages for out-of-bound array indexes confused the
119 index and the bound. (thanks to Stas Boukarev)
120 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
122 * bug fix: running regressions tests in shells without OSTYPE set now works.
123 (reported by Harald Hanche-Olsen)
124 * bug fix: more robust static space exhaustion signalling from
125 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
126 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
127 docstring away instead of storing it under names such as (LAMBDA (X)).
128 (reported by Leslie Polzer)
129 * bug fix: timers could go off in the wrong order, be delayed indefinitely
130 (thanks to Ole Arndt for the patch)
131 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
132 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
133 potentially-invalid effective methods in its cache.
134 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
135 instances as well (thanks to Paul Khuong)
136 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
137 SB-POSIX:WAITPID and their C equivalents.
138 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
140 changes in sbcl-1.0.27 relative to 1.0.26:
141 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
142 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
143 * improvement: the system either recovers from stack exhaustion or dies
144 properly as opposed to leaving the user uncertain of whether the handler
145 trampled on some random memory next to the stack or having to rely on
146 --lose-on-corruption (which is still a good idea to use in production
147 because stack exhaustion can happen in signal handlers which will likely
149 * bug fix: fix gc related interrupt handling bug on ppc (regression from
150 1.0.25.37, reported by Harald Hanche-Olsen)
151 * bug fix: work around signal delivery bug in darwin (regression from
152 1.0.25.44, reported by Sidney Markowitz)
153 * bug fix: fix ERROR leaking memory (reported by David Thompson)
155 changes in sbcl-1.0.26 relative to 1.0.25:
156 * incompatible change: an interruption (be it a function passed to
157 INTERRUPT-THREAD or a timer function) runs in an environment where
158 interrupts can be enabled. The interruption can use
159 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
160 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
161 potentially running out of stack. Keep in mind that in the absence
162 of WITHOUT-INTERRUPTS some potentially blocking operation such as
163 acquiring a lock can enable interrupts.
164 * incompatible change: GC-OFF and GC-ON are removed, as they were
165 always unsafe. Use WITHOUT-GCING instead.
166 * new feature: runtime option --disable-ldb
167 * new feature: runtime option --lose-on-corruption to die at the
168 slightest hint of possibly non-recoverable errors: running out of
169 memory, stack, alien stack, binding stack, encountering a memory
170 fault, etc. In the absence of --lose-on-corruption a warning is
172 * enhancement: detect binding stack exhaustion
173 * enhancement: detect alien stack exhaustion on x86/x86-64
174 * improvement: generally more stable and reliable interrupt handling
175 * improvement: there is a per thread interruption queue,
176 interruptions are executed in order of arrival
177 * improvement: a repeating timer reschedules itself when the it has
178 finished, but expiration times are spaced equally. If an
179 expiration time is in the past it will trigger after a short grace
180 period that may give a chance to other things to run.
181 * optimization: slightly faster gc on multithreaded builds
182 * optimization: faster WITHOUT-GCING
183 * bug fix: when JOIN-THREAD signals an error, do it when not holding
184 important locks so that the debugger/handler doesn't produce
185 recursive errors or deadlock.
186 * bug fix: real-time signals are not used anymore, so no more
187 hanging when the system wide real-time signal queue gets full.
188 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
190 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
191 * bug fix: fix random memory faults related to interrupts on alpha
192 * bug fix: fix random memory faults related to interrupts on sparc
193 * bug fix: fix deadlocks related to starting threads
194 * bug fix: fix deadlines on locks on futex platforms
195 * bug fix: restore errno in signal handlers
196 * bug fix: fix deadlocks related to hash tables
197 * bug fix: fix deadlocks in pcl
199 changes in sbcl-1.0.25 relative to 1.0.24:
200 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
201 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
202 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
203 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
204 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
205 better name and does not return values so stale on multiprocessor systems.
206 Also, HOLDING-MUTEX-P was added for about the only sane usage of
208 * improvement: unithread builds keep track of MUTEX-VALUE.
209 * improvement: reading from a TWO-WAY-STREAM does not touch the output
210 stream anymore making it thread safe to have a concurrent reader and
211 a writer, for instance, in a pipe.
212 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
213 arguments, making compiler-macros for SETF-functions able to inspect
214 their constant arguments.
215 * improvement: COMPILE-FILE reports times with millisecond accuracy
216 (thanks to Luis Oliveira)
217 * optimization: CHAR-CODE type derivation has been improved, making
218 TYPEP elimination on subtypes of CHARACTER work better. (reported
219 by Tobias Rittweiler, patch by Paul Khuong)
220 * bug fix: setting alien structure fields of type struct by value now
221 computes the right offset for the memory copy.
222 * bug fix: compilation problem involving inlined calls to aliens with
223 result type VOID. (reported by Ken Olum)
224 * bug fix: #235a; sequential inline expasion in different policies no
225 longer reuses the functional from the previous expansion site.
226 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
227 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
228 * bug fix: named ENUMs in multiply-referenced alien record types no longer
229 cause an implied type redefinition. Regression from 1.0.21.29.
230 * bug fix: sign-extension of small signed return values now works with C
231 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
232 * improvements to the Windows port:
233 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
234 Westfold, thanks to Rudi Schlatte)
236 changes in sbcl-1.0.24 relative to 1.0.23:
237 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
238 vector of a multidimensional SIMPLE-ARRAY.
239 * new feature: the system now signals a continuable error if standard
240 readtable modification is attempted. (thanks to Tobias Rittweiler)
241 * new feature: DIRECTORY has been extended with a non-standard keyword
242 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
243 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
244 has been robustified and documented better. (thanks to Robert Goldman)
245 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
246 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
247 * tradeoff: constant FORMAT control strings are now compiled unless
248 SPACE > SPEED (previously only when SPEED > SPACE.)
249 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
251 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
253 * bug fix: lexical type declarations are now correctly reported by
254 SB-CLTL2. (reported by Larry D'Anna)
255 * bug fix: STRING-TO-OCTETS did not handle :START properly when
256 using UTF-8 as external format. (thanks to Luis Oliveira)
257 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
258 are signalled correctly. (thanks to Stas Boukarev)
259 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
260 designator. (thanks to Tobias Rittweiler)
261 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
262 designator, and returns T instead of the function. (thanks to
264 * bug fix: direct superclasses of STANDARD-CLASS and
265 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
266 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
267 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
268 when no class with the named slot yet exists no longer causes a
269 compile-time style-warning.
270 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
271 in safe code. (reported by Didier Verna)
272 * bug fix: #430; nested structure constructors can stack allocate.
273 * bug fix: on some 64-bit platforms dynamic space size was truncated
274 to #xffff0000 bytes. (reported by Benjamin Lambert)
275 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
276 REPL unusable. (reported by Daniel Herring)
277 * bug fix: return values of READ-SEQUENCE did not take :START into
278 account on file streams, regressions since 1.0.12.22. (reported by
279 Thomas Russ, patch by Paul Khuong)
280 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
281 method specializer used to confuse permuation vector optimization.
282 * bug fix: system inserted bogus implicit type declarations for local
283 special variables in DEFMETHOD bodies.
284 * bug fix: #354; duplicated frames in backtraces due to
285 non-tail-call-optimized XEPs to functions with return type NIL
287 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
288 initializes structure object slots according to DEFSTRUCT initforms,
289 and DEFSTRUCT forms :INCLUDEind structure classes defined using
290 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
291 (reported by Bruno Haible and Stephen Wilson)
292 * bug fix: #395; fill-pointer output streams used now support
293 element-type BASE-CHAR as well.
294 * bug fix: compiler error when attempting to derive return value of
295 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
297 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
299 * bug fix: Mac OS X binaries should now be portable between Leopard
302 changes in sbcl-1.0.23 relative to 1.0.22:
303 * enhancement: when disassembling method functions, disassembly
304 for the associated fast function is also produced.
305 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
307 * optimization: printing with *PRINT-PRETTY* true is now more
308 efficient as long as the object being printed doesn't require
309 special handling by the pretty printer.
310 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
311 now interact correctly with type declarations.
312 * partial bug fix: PCL detects infinite recursion during wrapper
313 validation. (thanks to Attila Lendvai)
314 * bug fix: #426; nested function calls are inlined properly.
315 Previously if FOO was an inline function, in calls of the form
316 (FOO (FOO ...)) the outer call was not inlined.
317 * bug fix: long long arguments passed in registers to alien
318 functions on PowerPC Linux and NetBSD are now handled correctly
319 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
321 changes in sbcl-1.0.22 relative to 1.0.21:
322 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
323 for the shared object in the current directory, but passes the native
324 namestring of the designated pathname to the operation system's shared
325 object loading function as-it.
326 * minor incompatible change: --disable-debugger toplevel option now takes
327 effect before processing of initialization files and --eval or --load
329 * new feature: new commandline argument: --script, which supports
330 shebang lines. See documentation for details. (based on work by
332 * new feature: SAVE-LISP-AND-DIE can save current values of
333 --dynamic-space-size and --control-stack-size in the executable core,
334 causing it to skip normal runtime option processing. See documentation
335 for details. (thanks to Zach Beane)
336 * enhancement: inoccous calls to EVAL or generic functions dispatching
337 on subclasses of eg. STREAM no longer cause compiler notes to appear.
338 * enhancement: the system no longer resignals errors from --load and
339 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
340 associated with the original error to be lost. (thanks to Ariel
342 * enhancement: :DONT-SAVE keyword argument has been added to
343 LOAD-SHARED-OBJECT for controlling interaction with
344 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
345 the effects of an earlier LOAD-SHARED-OBJECT call.
346 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
347 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
348 provided. (reported by Cedric St-Jean)
349 * bug fix: circularity handling in the reader did not treat raw
350 structure slots correctly. (reported by Cedric St-Jean)
351 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
352 file descriptors when there were none.
353 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
354 was broken. (reporteed by Willem Broekema)
355 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
356 pathnames without a directory.
357 * bug fix: COMPILE-FILE did not warn about undefined variable
358 references at toplevel, and LOAD of the resulting fasl did
360 * bug fix: functions with non-required arguments used to end up with
361 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
362 * bug fix: redefining a function with non-required arguments didn't
363 update the system's knowledge about its call signature properly.
364 * bug fix: fixed #431; incompatible alien record type redefinitions
365 are detected and handled. (reported by Neil Haven)
366 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
367 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
369 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
370 after alien stack frames.
371 * bug fix: strings passed to mk{s,d}temp lacked null termination
373 changes in sbcl-1.0.21 relative to 1.0.20:
374 * new feature: the compiler is able to track the effective type of a
375 generic function across method addition and removal.
376 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
377 appropriately typed structure slots without locking.
378 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
379 information like those gathered by TIME using a programming-friendly
381 * new feature: TIME reports time taken even if the form performs a
382 non-local transfer of control.
383 * enhancement: reduced conservativism on GENCGC platforms: on
384 average 45% less pages pinned (measured from SBCL self build).
385 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
386 mutate constant symbols or violate declaimed type of the symbol.
387 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
388 sleeping on the semaphore in heavily contested semaphores.
389 * bug fix: semaphores and condition variables were not interrupt
391 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
392 owned by other threads anymore.
393 * bug fix: FIND on lists called KEY outside the specified
394 subsequence. (reported by budden)
395 * bug fix: LOG doesn't use single-float intermediate results when
396 given mixed integer and double-float arguments, leading to better
397 precision. (reported by Bob Felts)
398 * bug fix: LOG with base zero returned values of inconsistent type.
400 changes in sbcl-1.0.20 relative to 1.0.19:
401 * minor incompatible change: OPTIMIZE qualities
402 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
403 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
404 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
405 * documentation: some slot access efficiency guidelines have been
406 added to the user manual.
407 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
408 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
409 as ASSOC and MEMEBER.
410 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
411 to more efficient EQ-comparison versions more often.
412 * optimization: enhanced derivation of DOLIST iteration variable type
414 * optimization: constant folding of simple (LIST ...) forms as DOLIST
416 * optimization: runtime lookup of function definitions can be
417 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
418 * optimization: compiler is able to derive the return type of
419 (AREF (THE STRING X) Y) as being CHARACTER.
420 * optimization: CLRHASH on empty hash-tables no longer does pointless
421 work. (thanks to Alec Berryman)
422 * optimization: REPLACE deftransforms don't punt when :START1 or
424 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
425 no longer emits a code deletion note. (reported by Andrew
427 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
428 functions with an odd number of &OPTIONAL arguments, a &REST
429 argument, and one or more &KEY arguments at the call site.
430 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
431 arguments appeared at call sites as well.
432 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
433 READ-LINE &co can no longer read from them afterwards. (reported
435 * bug fix: fixed #427: unused local aliens no longer cause compiler
436 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
438 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
439 alien-stack leakage. (reported by Andy Hefner)
440 * bug fix: PROGV signals an error when an attempt to violate declared
441 type of a variable or bind a constant is made.
442 * bug fix: SET signals an error when an attempt to violate declared
443 type of a variable is made.
444 * bug fix: restart computation during the execution of a restart
445 test function no longer causes infinite recursion. (reported by
447 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
448 signals an error. (thanks to Pierre Mai)
449 * bug fix: EXPORT left symbol unexported in conflict situations.
450 (thanks to Michael Weber)
451 * bug fix: correctly handle name conflicts involving CL:NIL.
452 (thanks to Michael Weber)
453 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
454 conflicts arising from USEing package with conflicting symbols
455 correctly. (thanks to Michael Weber)
457 changes in sbcl-1.0.19 relative to 1.0.18:
458 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
459 warnings that go otherwise unhandled will be muffled if they are
460 of the type that's the value of this variable.
461 * optimization: stack allocation is slightly more efficient on x86
463 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
464 where a raw slot always is initialized using the initform whose
465 type is not know sufficiently well a compile-time are now compiled
466 correctly. (reported by John Morrison)
467 * bug fix: compiler no longer makes erronous assumptions in the
468 presence of non-foldable SATISFIES types.
469 * bug fix: stack analysis missed cleanups of dynamic-extent
470 arguments in non-let-converted calls to local functions.
471 * improvements to the Windows port:
472 ** adjusted address spaces for building on both Win32 and
473 Win64. (thanks for John Connors)
474 * fixed some bugs revealed by Paul Dietz' test suite:
475 ** interval arithmetic during type derivation used inexact integer
476 to single-float coercions.
477 ** arithmetic operations involving large integers and single
478 floats give the same results in compiled and interpreted code.
479 ** deriving the result type of COERCE no longer signals an error
480 if the derived type of the second argument is a MEMBER type
481 containing invalid type specifiers.
482 ** ADJOIN with constant NIL as second argument works correctly.
483 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
485 changes in sbcl-1.0.18 relative to 1.0.17:
486 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
487 profiles only the current thread.
488 * minor incompatible change: changes to SYMBOL-VALUE of constants
489 defined with DEFCONSTANT now signal an error.
490 * enhancement: SB-SPROF now has support for wallclock profiling,
491 and is also able to profile specific threads. REPORT output
492 has also additional sorting options.
493 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
495 * optimization: structure allocation has been improved
496 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
497 ** out of line constructors are ~10% faster.
498 ** inline constructors are ~15% faster.
499 ** inline constructors are capable of dynamic extent allocation
500 (generally on x86 and x86-64, in some cases on other platforms
502 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
504 * optimization: file compiler is now able to coalesce non-circular
505 lists, non-base strings, and bit-vectors. Additionally, constants
506 are never referenced through SYMBOL-VALUE at runtime.
507 * optimization: code defining methods on PRINT-OBJECT (and other
508 generic functions in the COMMON-LISP package) now loads faster.
509 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
511 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
512 fasl is now deleted. (reported by Attila Lendvai)
513 * bug fix: READ-LINE always returned NIL for the last line in files.
514 (reported by Yoshinori Tahara)
515 * bug fix: more accurate disassembly annotations of foreign function
516 calls. (thanks to Andy Hefner)
517 * bug fix: trimming non-simple strings and non-string string
518 designators when the there is nothing to trim works properly.
519 (thanks to James Knight)
520 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
521 (thanks to Travis Cross)
522 * fixed some bugs revealed by Paul Dietz' test suite:
523 ** NIL is a valid function name (regression at 1.0.13.38)
524 ** FILL on lists was missing its return value (regression at 1.0.12.27)
525 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
526 fill pointers properly (regression at 1.0.12.23)
527 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
528 displacement indices properly (regression at 1.0.12.23)
530 changes in sbcl-1.0.17 relative to 1.0.16:
531 * temporary regression: user code can no longer allocate closure
532 variable storage on stack, due to bug 419 without explicitly
533 requesting it. Please consult sbcl-devel for advice if you need to
534 use this feature in the meanwhile.
535 * new feature: runtime argument --control-stack-size can be used to
536 adjust thread default control stack size.
537 * enhancement: improved TIME output
538 ** all times are reported using the measured accuracy (milliseconds
539 for real and GC times, microseconds for everything else.)
540 ** processor cycle counts on x86 and x86-64.
541 ** interpreted forms are counted for both evaluator modes.
542 ** number of lambdas converted by the compiler is reported.
543 ** CPU percentage report (computed from real and total run time.)
544 ** more comprehensive run time reporting, using a condenced format
545 ** interperted form, lambda, and page fault counts are omitted
547 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
549 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
550 * optimization: two argument forms of LAST are upto ~10% faster
551 in normal SPEED policies.
552 * optimization: NCONC no longer needs to heap cons its &REST list
553 in normal SPEED policies.
554 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
556 * bug fix: UNION and NUNION work with :TEST-NOT once more,
557 regression since 1.0.9.1. (thanks to Eric Marsden)
558 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
559 since 1.0.15.36. (thanks to Paul Khuong)
560 * bug fix: LAST when always returned the whole list when given a bignum
561 as the second argument.
562 * bug fix: dynamic extent allocation of nested lists and vectors
563 could leak to otherwise accessible parts.
564 * bug fix: invalid optimization of heap-allocated alien variable
566 * bug fix: fasl header checking is less vulnerable to different
567 platform word lengths.
568 * bug fix: more correct assembler syntax for GNU binutils
569 2.18.50.0.4 support. (thanks to Marijn Schouten)
570 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
572 * bug fix: the fopcompiler can handle LOCALLY forms (with no
573 declarations) successfully. (reported by Attila Lendvai)
575 changes in sbcl-1.0.16 relative to 1.0.15:
576 * minor incompatible change: revert the changes to sb-posix's error
577 signaling added in 1.0.14.
578 * minor incompatible change: change PROBE-FILE back to returning
579 NIL whenever we can't get a truename, as was the case before 1.0.14.
580 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
581 inherits from ERROR instead of just CONDITION.
582 * new feature: SB-INTROSPECT can provide source locations for instances
583 as well. (thanks to Tobias Rittweiler)
584 * optimization: binding special variables now generates smaller code
585 on threaded platforms.
586 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
587 and cases where no :TEST is given but the compiler can infer that
588 the element to search is of type (OR FIXNUM (NOT NUMBER)).
589 * optimization: better LOGNOT on fixnums.
590 * optimization: modular arithmetic for a particular requested width
591 is implemented using a tagged representation unless a better
592 representation is available.
593 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
594 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
595 for wellformedness and returns a specialized vector. (reported by
596 Francois-Rene Rideau)
597 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
598 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
599 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
600 unscheduling timer at the same time as another timer fires.
601 * bug fix: don't reschedule timers for dead threads.
602 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
603 * bug fix: copying output from RUN-PROGRAM to a stream signalled
604 bogus errors if select() was interrupted.
605 * enhancement: add support for fcntl's struct flock to SB-POSIX.
607 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
608 * enhancement: cleaner backtraces for interactive interrupts, as
609 well as other cases where the interesting frames used to be
610 obscured by interrupt handling frames.
611 * enhancement: untracing a whole package using (UNTRACE "FOO") is
612 now supported, and tracing a whole package using (TRACE "FOO") now
613 traces SETF-functions as well.
614 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
615 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
616 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
617 * unreadably printed representation of hash-tables now includes
619 * bug fix: partially fixed #188: type propagation from assignments
620 is now more efficient.
621 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
622 'DOUBLE-FLOAT) are not flushable.
623 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
624 full address of the object, and none of the tag bits.
625 * bug fix: readably printing hash-tables now respects other printer
626 control variables. (reported by Cedric St-Jean)
627 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
628 keyword with MAKE-HASH-TABLE.
629 * bug fix: export SB-POSIX:MKSTEMP.
630 * bug fix: SORT was not interrupt safe.
631 * bug fix: XREF accounts for the last node of each basic-block as
633 * bug fix: MAKE-INSTANCE optimizations interacted badly with
634 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
635 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
636 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
637 create obsolete instances in the case of redefinition or
638 obsoletion of a superclass. (thanks to Andy Hefner)
639 * bug fix: Support for the Alpha architecture has been revived; it had
640 suffered somewhat from lack of maintenance since sbcl-1.0.
641 * improvements to the Windows port:
642 ** The system detects the codepage to use at startup, instead of
643 using the value from the saved core. (thanks to Kei Suzuki)
645 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
646 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
647 (see documentation for details.)
648 * revived support for OpenBSD (contributed by Josh Elsasser)
649 * partially fixed bug #108: ROOM no longer suffers from occasional
650 (AVER (SAP= CURRENT END)) failures.
651 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
652 bodies no longer cause a WARNING to be signalled. (reported by
654 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
655 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
656 the bug in TRUNCATE.) (reported by Michael Weber)
657 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
658 no samples. (reported by Andy Hefner)
659 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
660 no longer appear as (NIL ...) frames in backtraces.
661 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
662 is now actually exported from SB-EXT as documented. (reported by
664 * bug fix: sb-aclrepl now correctly understands how to inspect
665 single-floats on 64-bit platforms where single-floats are not boxed.
666 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
667 yet been finalized. (reported by Levente Meszaros)
668 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
669 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
670 SBCL-specific optimize qualities.
672 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
673 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
674 an executable in the search path, and does so in the child
675 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
676 been removed; it can be found in the CVS history, for somebody who
677 needs that search behavior (see the manual).
678 * minor incompatible change: compiler policy re. weakening type
679 checks has changed: now type checks are weakened only if SAFETY < 2
681 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
682 unparsing of directory pathnames as files. Analogously,
683 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
684 filename to parse into a directory pathname.
685 * enhancement: implicit generic function creation now signals a
686 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
687 users can bind handlers for and muffle around calls to LOAD.
688 * enhancement: RUN-PROGRAM allows unicode arguments and environments
689 to be used (using the default stream external format), and allows
690 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
691 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
692 strings and vectors whose element-type or simplicity is not fully
693 known at compile-time.
694 * optimization: STRING-TRIM and related functions no longer allocate
695 a new string when no trimming needs to be performed. These functions
696 are also faster than before when the input string has been declared
698 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
699 * optimization: READ-LINE is significantly faster for files containing
701 * optimization: non-open coded uses of character comparison operators
702 (e.g. char=) no longer cons when called with more than one parameter
703 on platforms supporting dynamic-extent allocation.
704 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
705 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
706 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
708 * bug fix: some sequence functions elided bounds checking when
710 * bug fix: too liberal weakening of union-type checks when SPEED >
712 * bug fix: more bogus fixnum declarations in ROOM implementation
715 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
716 * new feature: MAKE-HASH-TABLE now experimentally accepts a
717 :SYNCHRONIZED argument, which makes the hash-table safe for
718 concurrent accesses (but not iteration.) See also:
719 SB-EXT:WITH-LOCKED-HASH-TABLE, and
720 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
721 * optimization: CONCATENATE on strings is an order of magnitude faster
722 in code compiled with (> SPEED SPACE).
723 * optimization: SUBSEQ is ~50% faster on lists.
724 * bug fix: bug 417 fixed -- source location reporting is now more robust.
725 * bug fix: SUBSEQ on a list will now correctly signal an error if if
726 END is smaller then START.
727 * bug fix: SB-PROFILE will no longer report extra consing for nested
728 calls to profiled functions.
729 * bug fix: ROOM implementation had bogus fixnum declarations which
730 could cause type-errors when calling ROOM on large images.
731 * bug fix: if file compilation is aborted, the partial fasl is now
732 deleted, and COMPILE-FILE returns NIL as the primary value.
733 * bug fix: number of thread safety issues relating to SBCL's internal
734 hash-table usage have been fixed.
735 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
736 be returned from its body when the values were being returned
737 using unknown-values return convection and the W-P-O was wrapped
738 inside an UNWIND-PROTECT.
739 * bug fix: sb-posix should now compile again under Windows, enabling
742 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
743 * incompatible change: hash-table accessor functions are no longer
744 automatically protected by locks. Concurrent accesses on the same hash-table
745 from multiple threads can give inconsistent results or even corrupt the
746 hash-table completely. Multi-threaded applications should do their own
747 locking at the correct granularity. In the current implementation it is
748 still safe to have multiple readers access the same table, but it's not
749 guaranteed that this property will be maintained in future releases.
750 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
751 and will signal an error at runtime.
752 * enhancement: SB-THREAD package now exports a semaphore interface.
753 * enhancement: CONS can now stack-allocate on x86 and
754 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
756 * enhancement: nested lists can now be stack allocated on
757 platforms providing stack allocation support.
758 * enhancement: dynamic-extent support has been extended to support
759 cases where there are multiple possible sources for the stack
761 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
762 if the mutex is uncontested on Linux.
763 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
764 as specified by the CLHS. (thanks to Tobias Rittweiler)
765 * bug fix: NaN comparison now works on x86-64.
766 * bug fix: CLOSE :ABORT T on a stream with pending output now
768 * bug fix: instances of non-standard metaclasses using standard
769 instance structure protocol sometimes missed the slot type checks
771 * bug fix: known functions can be inlined in high-debug code.
773 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
774 * minor incompatible change: the MSI installer on Windows no longer
775 associates .lisp and .fasl files with the installed SBCL.
776 * minor incompatible change: :UNIX is no longer present in *FEATURES*
777 on Windows. (thanks to Luis Oliviera)
778 * new feature: SB-CLTL2 contrib module now implements
779 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
780 * optimization: scavenging weak pointers is now more efficient,
781 requiring O(1) instead of O(N) per weak pointer to identify
782 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
783 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
784 method bodies using constant slot-names when the first argument is
785 a specializer parameter for the method.
786 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
787 names, when the class of the instance is a direct instance
788 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
789 as slow as the constant slot-name case.)
790 * optimization: member type construction is now O(N) instead
792 * optimization: UNION and NUNION are now O(N+M) for large
793 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
795 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
796 now more readable in environments like Slime which display it.
797 (thanks to Tobias C. Rittweiler)
798 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
799 was able to infer the correct argument type for the object on which
800 the CAS operation was being performed.
801 * bug fix: copy propagation interfered with parallel assignment
802 semantics in local calls. (reported by Paul Khuong)
803 * bug fix: the signed modular fixnum shift compiled to wrong code on
804 x86 and x86-64. (spotted by a slight modification to some of
807 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
808 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
809 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
810 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
812 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
813 and generic function now print the object identity for anonymous
814 instances. (thanks to Attila Lendvai)
815 * enhancement: as an extension to MOP, SBCL now supports SETF of
816 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
817 (thanks to Attila Lendvai)
818 * enhancement: sb-cover has an alternate annotation mode which puts
819 the form annotations at the car of the form, instead of annotating
820 it completely. The benefit of this mode is that it shows better
821 which forms were instrumented by the compiler.
822 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
823 by printer control variables. (reported by Dan Corkill)
824 * bug fix: system leaked memory when delayed output was performed by
825 the OS in smaller chunks then expected. (thanks to David Smith)
826 * bug fix: system leaked memory when file streams were not closed
828 * bug fix: large objects written to slow streams that were modified
829 after the write could end up with the modified state written to
830 the underlying file descriptor.
831 * bug fix: multiple threads operating in parallel on the same stream
832 could cause buffer-overflows.
833 * bug fix: source location information is stored correctly
834 (broken since 1.0.6). This bug would generally show up as the
835 Slime debugger highlighting the wrong form when the sldb-show-source
837 * bug fix: Branch forms are again annotated as branches in the sb-cover
839 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
840 on x86-64. (reported by Gregory Vanuxem)
841 * bug fix: EQUALP could return wrong results for structures with raw
842 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
843 word). (reported by Vjacheslav Fyodorov)
844 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
847 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
848 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
849 atomic compare-and-swap operations on threaded platforms.
850 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
851 allows assigning a global minimum value to optimization qualities
852 (overriding proclamations and declarations).
853 * enhancement: closed over variables can be stack-allocated on x86
855 * performance bug fix: GETHASH and (SETF GETHASH) are once again
857 * optimization: slot definition lookup is now O(1). This speeds up
858 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
859 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
860 * optimization: ASSOC and MEMBER can now be open-coded for all
861 combinations of keyword arguments when second argument is constant
862 and SPEED >= SPACE. In other cases a specialized version is
864 * bug fix: using obsoleted structure instances with TYPEP and
865 generic functions now signals a sensible error.
866 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
867 (reported by Kristoffer Kvello)
868 * bug fix: backtrace construction is now more careful when making
869 lisp-objects from pointers on the stack, to avoid creating bogus
870 objects that can be seen by the GC.
871 * bug fix: defaulting of values in contexts expecting more than 7
872 variables now works on x86-64. (reported by Christopher Laux)
873 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
875 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
876 as the property-list of a symbol.
877 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
878 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
879 situations requested, are once again file-compileable. (reported
882 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
883 * MOP improvement: support for user-defined subclasses of
884 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
885 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
886 the expansion of DEFMETHOD, is responsible for generating a form
887 which creates a list of specializers when evaluated. Additional
888 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
889 debugging and introspective support.
890 * minor incompatible change: the (unsupported) spinlock interface
891 has changed: free spinlock now has the value NIL, and a held spinlock
892 has the owning thread as its value.
893 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
894 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
896 * enhancement: name of a socket-stream is now "a socket" instead of
898 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
899 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
900 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
901 for generic functions. (Thanks to Tobias C. Rittweiler)
902 * optimization: bignum printing speed has been improved by 20-40%
903 (depending on the bignum size.)
904 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
906 * bug fix: the cache used by the CLOS to store precomputed effective
907 methods, slot offsets, and constant return values is now thread and
909 * bug fix: generic function dispatch function updating is now thread
910 and interrupt safe (in the sense that the known issues have been
912 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
913 * bug fix: interning EQL-specializers is now thread and interrupt safe.
914 * bug fix: asdf systems with dependencies to the SB-POSIX or
915 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
916 * bug fix: interrupt safety of applicable method computation has been
919 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
920 * new contrib: sb-cover, an experimental code coverage tool, is included
922 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
923 significantly faster.
924 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
925 produce more efficient code on x86-64 if the compiler can determine
926 that (+ INDEX <constant>) does not require a bounds check and FOO
927 has an element type at least 8 bits wide.
928 * enhancement: a new, experimental synchronous timeout facility is
929 provided. Refer to SB-SYS:WITH-DEADLINE for details.
930 * enhancement: when a symbol name conflict error arises, the
931 conflicting symbols are always printed with a package prefix.
932 (thanks to Kevin Reid)
933 * enhancement: stepping is now once again supported on the SPARC and
934 MIPS platforms. (It is also now more likely to work on CheneyGC
936 * enhancement: sb-sprof can now also track and report accurate call
938 * bug fixes: the treatment of non-standard subclasses of
939 SB-MOP:SPECIALIZER is more correct.
940 * incompatible change: PURIFY no longer copies the data from the
941 dynamic space into the static and read-only spaces on platforms
942 that use the generational garbage collector
943 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
945 * bug fix: GC race condition occasionally resulting in crashes with
946 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
948 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
950 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
951 a STYLE-WARNING to be signalled (regression from 1.0.4.)
952 * bug fix: an asynchronous interrupt could previously leave the
953 system running with GC inhibited.
954 * bug fix: a DECLARE form evaluated at top-level now causes an error
955 rather than silently (or verbosely) returning NIL.
956 * bug fix: trying to dissassemble functions compiled at high DEBUG could
957 result in a error being signalled due to source form lookup errors.
958 (reported by Peter Graves)
960 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
961 * incompatible change: removed writer methods for host-ent-name,
962 host-ent-addresses -- changing the values did not update the DNS
964 * minor incompatible change: changed experimental JOIN-THREAD interface
965 * documentation: the manual now lists reader and writer methods
966 in class slot documentation sections. (thanks to Richard M Kreuter)
967 * documentation: unwinding from asyncronous events has been
968 documented as unsafe.
969 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
970 in multithreaded application code.
971 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
972 platforms. (thanks to James Anderson for the optimization hint)
973 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
975 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
976 variants no longer cons.
977 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
978 their NOT- variants no longer cons.
979 * optimization: EQUAL hash tables no longer use SXHASH for objects
980 of all data types, but instead use an EQL hash for types for which
981 EQUAL is the same as EQL.
982 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
983 are significantly faster.
984 * optimization: new STRING-OUTPUT-STREAM implementation is much
985 faster for large outputs and conses 30% less on average.
986 * enhancement: XREF information is now collected for references made
987 to global variables using SYMBOL-VALUE and a constant argument.
988 * enhancement: SIGINT now causes a specific condition
989 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
990 * bug fix: FILE-POSITION used to signal an error in some cases where
991 ANSI requires it to return NIL.
992 * bug fix: ADJUST-ARRAY is now interrupt-safe.
993 * bug fix: adding and removing fd-handlers is now interrupt-safe.
994 * bug fix: inlined calls to C now ensure 16byte stack alignment on
996 * bug fix: bad type declaration in the CLOS implementation has
997 been fixed. (reported by James Anderson)
998 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
999 (thanks to Lutz Euler)
1000 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1001 required by the CLHS. (reported by Samium Gromoff)
1002 * bug fix: dead unbound variable references now signal an error.
1003 (reported by Marco Monteiro)
1004 * bug fix: / with an unused value was being deleted in safe code.
1005 (thanks to Marco Monteiro and Kevin Reid)
1006 * bug fix: number of characters that can be written onto a single
1007 line in a file is unlimited.
1008 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1009 been fixed by inhibiting interrupts for when GC is disabled.
1010 * bug fix: some interrupt safety issues with GETHASH, (SETF
1011 GETHASH), CLRHASH and REMHASH have been fixed.
1012 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1013 specifier no longer causes infinite recursion.
1014 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1015 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1016 * bug fix: an &environment argument with the correct variable information
1017 is passed to macros that are expanded during byte compilation.
1018 (reported by Samium Gromoff)
1019 * bug fix: a logic error was causing the hash function for bignums to
1020 have excessive amounts of collisions. (reported by Faré Rideau)
1021 * bug fix: modifying the contents of an array could change the return
1022 value of SXHASH on that array, which is only allowed for strings
1023 and bit vectors. (bug introduced in 0.9.16)
1024 * improvement: the x86-64/darwin port now passes all tests (except
1025 for the debugger tests) but should still be considered
1026 experimental until this is fixed.
1027 * improvement: a style-warning is signaled for CASE (etc) clauses with
1028 duplicate keys. (thanks to Kevin Reid)
1029 * improvement: macos/x86 and macos/x86-64 now use mach exception
1030 handlers for dealing with illegal instructions (for trapping and
1031 error handling) and memory protection violations (for GC).
1033 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1034 * new platform: experimental support for x86-64/darwin (MacOS).
1035 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1036 and getnameinfo sockets functions are used instead of gethostbyaddr
1037 and gethostbyname, on platforms where the newer functions are available.
1038 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1040 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1041 don't print the startup banner, but behave as if --noinform was passed
1042 as a command line argument. (thanks to Kevin Reid)
1043 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1044 * optimization: code using alien values with undeclared types is much faster.
1045 * optimization: the compiler is now able to open code SEARCH in more cases.
1046 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1047 * bug fix: using standardized COMMON-LISP special variables as loop
1048 variables no longer signals bogus package lock violations. (reported
1050 * bug fix: declaring local loop variables to be of a range-limited type
1051 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1052 (reported by Andras Simon)
1053 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1054 bugs remain on x86-64.)
1055 * bug fix: the #= and ## reader macros now interact reasonably with
1056 funcallable instances.
1057 * bug fix: type-checks for function arguments were compiled using the
1058 compiler policy settings of the wrong lexical environment (in 1.0.2
1060 * bug fix: SHADOW accepts characters as string designators, as required
1061 by the spec (thanks to Eric Marsden)
1062 * bug fix: fixed GC safety issues when foreign functions are called with
1063 non-base strings as arguments
1064 * bug fix: more consistent error output for fatal-compiler-warnings, like
1066 * bug fix: functions with proper names were showing up as NIL in
1067 backtraces (reported by Edi Weitz, regression in 1.0.2)
1069 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1070 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1071 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1072 produce more efficient code on the x86 if the compiler can determine
1073 that (+ INDEX <constant>) does not require a bounds check and FOO
1074 has an element type at least 8 bits wide.
1075 * bug fix: references to undefined variables are handled the same way
1076 in toplevel forms as in the normal compiler
1077 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1079 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1080 (thanks to Jon Buller)
1081 * improvement: faster compilation times for complex functions
1082 * improvement: added readlink support to SB-POSIX (thanks to Richard
1085 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1086 * improvement: experimental support for mach exception handling on
1087 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1089 * improvement: support for GBK external format.
1090 (thanks to Chun Tian (binghe))
1091 * improvement: the debugger now displays variables that have been closed
1092 over, in code compiled with (DEBUG 2) or higher
1093 * improvement: support for executable cores on NetBSD (thanks to
1095 * new feature: added a RESTART-FRAME debugger command
1096 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1097 be used to provide an implementation for FILE-POSITION on Gray streams
1098 (thanks to Eric Marsden)
1099 * new feature: add syslog, openlog and closelog support to SB-POSIX
1100 (thanks to Richard Kreuter)
1101 * optimization: the function call overhead in code compiled with
1102 a high DEBUG optimization setting is significantly
1103 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1104 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1105 (thanks to Tony Martinez)
1106 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1107 evaluated once (reported by Kevin Reid)
1108 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1109 works again (thanks to Kilian Sprotte)
1110 * bug fix: an error is signaled for tagbodies with duplicate tags
1111 (thanks to Stephen Wilson)
1112 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1113 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1114 stack frames from alien callbacks.
1115 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1116 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1117 65k pages (thanks to David Woodhouse)
1118 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1120 changes in sbcl-1.0.1 relative to sbcl-1.0:
1121 * new platform: FreeBSD/x86-64, including support for threading.
1122 * new feature: the compiler stores cross-referencing information
1123 about function calls (who-calls), macroexpansion (who-macroexpands)
1124 and special variables (who-binds, who-sets, who-references) for code
1125 compiled with (< SPACE 3). This information is available through the
1126 sb-introspect contrib.
1127 * new feature: users may subclass SEQUENCE, and have instances of
1128 these classes interoperate with standard Common Lisp functions if
1129 a number of methods are defined. (This feature is experimental
1130 and the interface subject to change based on feedback from SBCL
1131 users and the general community)
1132 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1133 x86/x86-64, rather than the previous fixed depth of 8
1134 * improvement: another pthread back-end of mutex "pthread-futex".
1135 * bug fix: non-ascii command-line arguments are processed correctly
1136 (thanks to Yaroslav Kavenchuk)
1137 * bug fix: non-required arguments were not passed correctly when a method
1138 defined using DEFMETHOD was called from a mop-generated method using
1139 CALL-NEXT-METHOD (reported by Pascal Costanza)
1140 * bug fix: recursion is now permitted in accessors through
1141 SLOT-UNBOUND. (reported by Pascal Costanza)
1142 * bug fix: an error was signaled at startup if the HOME environment
1143 variable was defined, but had an empty value (reported by Peter Van Eynde)
1144 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1145 signal a PROGRAM-ERROR, not a BUG.
1146 * bug fix: SB-POSIX:READDIR works when built with large file support.
1147 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1149 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1150 for better automatic indentation support. (thanks to Matt Pillsbury)
1151 * optimization: loading generic functions no longer takes O(n^2) time,
1152 proportional to the amount of methods in the generic function
1153 (reported by Todd Sabin and Jeremy Brown)
1154 * optimization: the FIND and POSITION family of sequence functions
1155 are significantly faster on arrays whose element types have been
1157 * improvements to the Windows port:
1158 ** Intermittent heap corruption problems have been fixed. (thanks
1159 to Alastair Bridgewater)
1160 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1162 ** Lisp is able to unwind foreign exception frames from alien
1163 callbacks. (thanks to Alastair Bridgewater)
1165 changes in sbcl-1.0 relative to sbcl-0.9.18:
1166 * improvement: experimental support for threading on FreeBSD/x86.
1167 (thanks to NIIMI Satoshi)
1168 * improvement: runtime option --dynamic-space-size can be used
1169 to set the size of the dynamic space reserved on startup.
1170 * improvement: floating point modes in effect are now saved in
1171 core, and restored on startup.
1172 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1173 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1174 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1175 threads are not running after *SAVE-HOOKS* have run.
1176 * improvement: writes to CLOS instance slots are type-checked in code
1177 compiled with (SAFETY 3)
1178 * improvement: floating-point exception handling on FreeBSD (thanks to
1180 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1181 (thanks to Zach Beane)
1182 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1184 * improvement: added support for the Shift-JIS external format.
1185 (contributed by NIIMI Satoshi)
1186 * improvement: callbacks are supported on Linux/PPC. (thanks to
1188 * bug fix: compiler bug triggered by a (non-standard) VALUES
1189 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1190 * bug fix: file compiler no longer confuses validated and already
1191 dumped structurres. (reported by Kaersten Poeck)
1192 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1193 fill-pointer signals a type-error as required. (thanks to
1195 * bug fix: disassemly of funcallable instances works.
1196 * bug fix: single stepping on PPC.
1197 * bug fix: fix thread-safety problems in the type system (generally
1198 manifesting as nonsensical errors like "STRING is a bad type specifier
1199 for sequences" or "The value 1 is not of type FIXNUM")
1200 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1201 (reported by Josip Gracin)
1202 * bug fix: an error is signaled for attempts to displace arrays with
1203 incompatible element types (thanks to Mario Mommer)
1204 * bug fix: more correct handling of wide characters in debug info
1205 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1206 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1207 and don't cause extra consing
1208 * optimization: MAP and MAP-INTO are significantly faster on vectors
1209 whose elements types have been declared.
1210 * Improvements to SB-SPROF:
1211 ** Support for allocation profiling
1212 ** Reduced profiling overhead, especially for long profiling runs
1213 * Improvements to the Windows port:
1214 ** floating point exceptions are now reported correctly.
1215 ** stack exhaustion detection works partially.
1216 ** more accurate GET-INTERNAL-REAL-TIME.
1217 ** better RUN-PROGRAM behaviour in case of errors in the child
1219 ** PROBE-FILE now simplifies pathnames correctly.
1220 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1221 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1222 1st 1970 (although time timezone data will be unreliable).
1223 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1225 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1226 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1227 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1229 * bug fix: two potential GC deadlocks affecting threaded builds.
1230 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1231 returns T (reported by Anton Kazennikov)
1232 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1233 with non-variable places
1234 * bug fix: remove a race condition in the setting of
1235 funcallable-instance functions, this should make threaded CLOS
1236 code more stable against memory faults.
1237 * bug fix: corruption of specials when unbinding is interrupted by an
1238 asynchronous unwind (reported by Hannu Koivisto)
1239 * improvement: the debugger will now also display local variables that
1240 are only used once, for code compiled with a DEBUG optimization quality
1243 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1244 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1245 * incompatible change: External-format support for FFI calls. The
1246 SB-ALIEN:C-STRING no longer implies an ASCII
1247 external-format. Instead the string is subject to external-format
1248 conversion. Additionally return values of type SB-ALIEN:C-STRING
1249 are by default of type (SIMPLE-ARRAY CHARACTER), not
1250 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1251 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1252 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1253 * incompatible change: SB-EXT package no longer contains the
1254 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1255 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1257 * incompatible change: the single-stepper is no longer available
1258 on Alpha, Mips and Sparc platforms.
1259 * minor incompatible change: the direct superclasses of
1260 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1261 not (STANDARD-OBJECT FUNCTION). This makes the
1262 class-precedence-lists of GENERIC-FUNCTION and
1263 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1265 * minor incompatible change: the default stream external format on
1266 non-unicode SBCL is no longer detected from the locale, but is always
1268 * new feature: Add a version of evaluator that uses an interpreter instead
1269 of the compiler. EVAL still uses the compiler by default, to switch it
1270 to use the interpreter, set the value of the variable
1271 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1272 * minor incompatible change: the single-stepper REPL has been merged
1273 with the normal debugger (see the "Stepping" heading of the debugger help
1274 for more details). The debugger command STEP will no longer switch
1275 to the single-stepper REPL.
1276 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1277 for a type now works.
1278 * bug fix: loading of default sysinit file works. (thanks to Leonid
1280 * bug fix: better detection of circularities in the file-compiler.
1281 (reported by Marco Monteiro)
1282 * bug fix: the CL pathname functions now work with files that have
1283 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1284 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1285 systems with Unix98 pty semantics.
1286 * bug fix: ASDF-INSTALL will now work with bsd tar.
1287 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1289 * bug fix: timers expiring in dead threads no longer cause a
1290 type-error (reported by Paul "Nonny Mouse").
1291 * bug fix: thanks to more lightweight single-stepper instrumentation,
1292 code compiled with (DEBUG 3) will compile and execute significantly faster,
1293 and will have more accurate type-inferencing than before
1294 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1295 whose bindings are modified
1296 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1297 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1298 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1299 CL:SOFTWARE-VERSION with proper version
1301 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1302 * feature: implemented the READER-METHOD-CLASS and
1303 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1304 as specified by AMOP.
1305 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1307 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1308 (thanks to Lutz Euler)
1309 * optimization: hashing of general arrays and vectors has been
1310 improved. (reported by Any Fingerhut)
1311 * enhancement: SB-INTROSPECT is now able to find definitions of
1312 profiled functions. (thanks to Troels Henriksen)
1313 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1314 as well, allowing compiler-macros for SETF-functions to expand.
1315 * enhancement: step-instrumentation no longer wraps known
1316 single-value functions with multiple-value context, allowing
1317 better type inference.
1318 * fixed bug #337: use of MAKE-METHOD in method combination now works
1319 even in the presence of user-defined method classes. (reported by
1320 Bruno Haible and Pascal Costanza)
1321 * fixed bug #339(c): if there are applicable methods not part of any
1322 long-form method-combination group, call INVALID-METHOD-ERROR.
1323 (reported by Bruno Haible)
1324 * fixed bug #361: the :FUNCTION initarg in the protocol for
1325 initialization of methods can now be used to override
1326 internally-produced optimized functions. (reported by Bruno
1328 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1329 system-provided lambda expression no longer cause warnings about
1330 unbound #:|pv-table| symbols.
1331 * bug fix: improved the handling of type declarations and the
1332 detection of violations for keyword arguments with non-constant
1334 * bug fix: potentially erronous calls to PATHNAME and
1335 MERGE-PATHNAMES were being flushed in some cases.
1336 (reported by Richard Kreuter)
1337 * bug fix: compiled calls to TYPEP were mishandling obsolete
1338 instances. (reported by James Bielman and Attila Lendvai)
1339 * bug fix: format strings with ~> without matching ~< no longer
1340 trigger an AVER, but signal an understandable error instead.
1341 (reported by Antonio Martinez)
1342 * bug fix: specifying an output-file without a pathname-type for
1343 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1344 of input-file instead of "fasl". (reported by Robert Dodier)
1345 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1346 (reported by James Y Knight).
1347 * bug fix: compiler-macros-function did not consider the environment
1348 argument for shadowing by local functions.
1349 * bug fix: compiler-macros expansion was inhibited by local INLINE
1351 * bug fix: inline expansions of known functions were subject to
1352 step-instrumentation in high debug policies, leading to problems
1353 with type-inference.
1354 * bug fix: compiler failed to differentiate between different CONS
1355 types in some cases.
1356 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1357 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1358 * bug fix: #368: incorrect use of expressed vs. upgraded array
1360 * bug fix: #306a: more precise unions of array types.
1361 * thread-safety improvements:
1362 ** CONDITION-WAIT could return early on Linux, if the thread was
1363 interrupted and subsequently continued with SIGCONT.
1364 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1366 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1367 * added support for the ucs-2 external format. (contributed by Ivan
1369 * minor incompatible change: pretty printing of objects of type
1370 (cons symbol) is, in the default pprint-dispatch-table, now
1371 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1373 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1374 called later in a class's lifetime, possibly as late as when the
1375 first instance of the class is created. Previously,
1376 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1377 class became finalizeable.
1378 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1379 for multibyte external-format streams. (thanks to "vbzoli")
1380 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1381 with :ALLOCATION :CLASS inherited from superclasses of the
1383 * fixed bug: anonymous classes can now be created using the :NAME
1384 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1385 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1386 * fixed bug: core-files saved with :EXECUTABLE T can again be
1387 executed when SBCL_HOME isn't set. (reported by James Knight)
1388 * fixed bug: toplevel LOCALLY forms with declarations could
1389 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1390 * fixed bug: printing from several different threads using different
1391 values of *print-case* could cause invalid output, due to
1392 some internal special variables of the printer not being bound
1393 thread-locally (reported by Max Mikhanosha)
1394 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1395 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1396 (reported by Pascal Costanza)
1397 * fixed bug: FINALIZE-INHERITANCE is called from
1398 REINITIALIZE-INSTANCE on classes when the class has previously
1399 been finalized, as required by AMOP.
1400 * minor code generation optimizations:
1401 ** better register allocation in CLOS dispatching functions
1402 ** overflow detection when coercing signed bytes to fixnums on x86-64
1403 ** is now implemented with one IMUL instruction instead of three shifts
1404 ** more efficient bit-vector access on x86 and x86-64
1405 ** more efficient access to raw structure slots on x86 and x86-64
1406 * fixed some bugs revealed by Paul Dietz' test suite:
1407 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1408 return its argument.
1410 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1411 * feature: thread support on Solaris/x86, and experimental thread support
1413 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1415 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1416 default method for SLOT-UNBOUND.
1417 * minor incompatible change: prevent the user from specializing the
1418 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1419 somewhat counter to the intent of the protocol, I (CSR) think, and
1420 additionally it just doesn't work in SBCL as currently
1421 implemented, thanks to optimizations (that are always valid for
1422 the other three SLOT-VALUEish functions, but not for the setter).
1423 * minor incompatible change: the :SB-LDB feature is now enabled by
1424 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1425 the low-level debugger.
1426 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1427 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1428 down to an SB-SYS:FD-STREAM, allowing direct communication in
1429 more cases. Temporary files and pipes are still used as a fallback
1431 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1432 on the non-reentrant C functions localtime(3) and gmtime(3).
1433 * bug fix: global optimization policy was not visible in LOCALLY and
1435 * bug fix: class objects can be used as specializers in methods.
1436 (reported by Pascal Costanza)
1437 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1438 with a type error. (reported by blitz_ on #lisp)
1439 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1440 failed with a type error. (reported by Pascal Bourguignon)
1441 * bug fix: merging pathnames against defaults with :DIRECTORY
1442 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1443 (reported by James Y Knight)
1444 * bug fix: saving large (>2GB) cores on x86-64 now works
1445 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1446 constant index and a (simple-array (signed-byte 32)) array
1447 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1448 error (patch by Robert J. Macomber)
1449 * feature: TIME now displays the amount of run-time spent in GC
1450 * bug fix: The debugger now does a better job of respecting
1451 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1452 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1453 workaround for bug 403.)
1454 * bug fix: floating point exception handling now works on FreeBSD
1455 (thanks to NIIMI Satoshi)
1456 * fixed some bugs revealed by Paul Dietz' test suite:
1457 ** MISC.641: LET-conversion were not supposed to work in late
1459 * improvements to the Win32/x86 port:
1460 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1461 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1463 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1464 * new feature: source path information is generated for macro-expansion
1465 errors for use in IDE's like Slime (thanks to Helmut Eller)
1466 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1467 * bug fix: compiler does not loop forever on an invalid type in
1469 * improvement: compilation of most CLOS applications is significantly
1471 * optimization: added a limited bytecode compiler for simple toplevel
1472 forms, speeding up compilation and FASL loading
1473 * bug fix: the statistical profiler now properly distinguishes anonymous
1476 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1477 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1478 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1479 into subclasses of the finalized class. Now user calls to
1480 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1481 system return before any subclasses are finalized.
1482 * minor incompatible change: The reader no longer ignores errors
1483 regarding non-existent packages in #+ and #- feature tests.
1484 * new feature: command line options --no-sysinit, --no-userinit to
1485 inhibit loading the corresponding init files
1486 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1487 for sending data through UDP sockets (thanks to François-René Rideau)
1488 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1489 error is signalled instead (thanks to François-René Rideau)
1490 * minor incompatible change: Error signalling behaviour of lexical
1491 operations violating package locks has changed slightly. Refer to
1492 documentation on package locks for details.
1493 * enhancement: EVAL can process IF-expressions without resorting to the
1495 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1496 constant-folded properly due to missing out-of-line functions.
1497 (reported by Mika Pihlajamäki)
1498 * bug fix: LISTEN sometimes returned T even in cases where no data was
1499 immediately available from the stream
1500 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1501 were reversed. (reported by Levente Mészáros)
1502 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1503 when given a vector displaced to an adjustable array. (reported
1505 * bug fix: derivation of float boundaries from numbers outside the
1506 appropriate float range (reported by John Wiseman)
1507 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1509 * bug fix: precomputing cache entries for generic functions with
1510 some subclasses of specializers as yet invalid does not attempt to
1511 fill a cache line with a negative offset. (reported by Levente
1513 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1514 allow condition class objects as arguments to DOCUMENTATION and
1515 (SETF DOCUMENTATION); only find and set documentation for
1516 structure names for the STRUCTURE doc-type. (suggested by Gary
1518 * improvements to the Win32/x86 port:
1519 ** (user-homedir-pathname) and default initialization file
1520 locations now know about the user's "Documents and Settings"
1521 directory (thanks to Yaroslav Kavenchuk)
1522 ** run-program is implemented (thanks to Mike Thomas)
1523 ** sockets support (thanks to Timothy Ritchey)
1524 ** better backtrace support (thanks to Alastair Bridgewater)
1525 ** sb-grovel supported
1526 ** asdf-install and sb-posix work somewhat
1527 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1528 * improvements to the Solaris/x86 port:
1529 ** works on Solaris 11/Solaris Express
1530 ** floating-point exception handling support
1531 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1532 * fixed some bugs revealed by Paul Dietz' test suite:
1533 ** REMOVE-METHOD returns its generic function argument even when
1534 the method is not one of the generic functions' methods.
1535 ** objects declared as MEMBER types can be admissible arguments to
1536 structure accessors.
1537 ** printing characters should simply be printed by the FORMAT ~:C
1539 ** compiler failure when compiling functions with hairy constant
1540 defaults for optional parameters.
1541 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1542 function, which is already optimized.
1544 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1545 * new platform: experimental support for SBCL x86/Darwin, including
1546 MacOS X 10.4.5 on Intel.
1547 * new feature: Unicode character names are now known to the system
1548 (through CHAR-NAME and NAME-CHAR).
1549 * new feature: the filesystem location of SBCL's core file is
1550 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1551 * minor incompatible change: the contrib modules SB-POSIX and
1552 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1553 this change is to make it easier to distribute
1554 location-independent binaries.
1555 * bug fix: as implied by AMOP, standardized classes no longer have
1556 slots named by external symbols of public packages. (reported by
1558 * optimization: calling functions via constant symbols -- as in
1559 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1560 via the function object as in (FUNCALL #'FOO).
1561 * optimization: on x86 and x86-64, the calling convention for the
1562 case of dealing with an unknown number of values has been altered
1563 to be friendlier to the prediction heuristics implemented,
1564 particularly with reference to CALL and RET pairing. (thanks to
1565 Alastair Bridgewater)
1566 * optimization: on x86, the code for access to thread-local symbol
1567 values and binding/unbinding of thread-local symbols is smaller.
1568 (thanks to Alastair Bridgewater)
1569 * enhancement: CONSTANTP is now able to determine constantness of
1570 more complex forms, including calls to constant-foldable standardized
1571 functions and some special forms beyond QUOTE.
1572 * fixed bug: occasional GC crashes on Solaris/x86
1573 * optimization: x86-64 supports stack allocation of results of simple
1574 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1575 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1576 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1577 (thanks to James Knight)
1578 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1579 by the standard (thanks to Stephen Compall)
1581 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1582 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1583 be used for bundling the runtime and the core file into one
1584 executable binary. This feature is not currently supported on all SBCL
1585 platforms. (thanks to James Bielman and NIIMI Satoshi)
1586 * new feature: a generational or ephemeral garbage collector is now
1587 the default on the PowerPC platform (both Linux and Darwin). The
1588 old Cheney (stop and copy) collector is a build-time option.
1589 (thanks to Cyrus Harmon, after Raymond Toy)
1590 * minor incompatible change: the method by which SBCL finds its
1591 contributed modules has changed; it no longer relies on symbolic
1592 links from an $SBCL_HOME/systems directory, but searches directly
1593 in the subdirectories of $SBCL_HOME.
1594 * enhancement: the dynamic heap size on the Linux/PPC platform is
1595 markedly larger, even using the older Cheney garbage collector.
1596 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1597 certain complicated string types. (reported by Gary King)
1598 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1599 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1600 * fixed bug: DOCUMENTATION on structures no longer signals an
1601 error if no structure type of the right name exists. (reported by
1603 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1604 applicable non-standard primary or :AROUND method on
1605 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1606 no longer cause unbound variable errors. (reported by Kevin Reid)
1607 * fixed bug: metacircle resolution in cases where methods have slots
1608 added before the slots from STANDARD-METHOD. (reported by Jean
1610 * fixed bug: the Power PC assembly code for calling into lisp
1611 sometimes computed its return address wrongly (depending on the
1612 15th bit of the address, fixed at link time). This used to
1613 manifest itself in a segmentation violation while building PCL.
1614 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1615 many others over the years)
1616 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1617 the stack pointer (treated as a signed integer) is negative.
1618 (thanks to Peter van Eynde)
1620 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1621 * new platform: experimental support for the Windows operating
1622 system has been added. (thanks to Alastair Bridgewater)
1623 * fixed several bugs in and robustified the PPC FFI (including
1624 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1625 * bug fix: allow non-simple string symbol names (reported by Paul
1627 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1629 * bug fix: saving a core corrupted callbacks on x86/x86-64
1630 * bug fix: closed a loophole in metacircularity detection and
1631 grounding in the PCL implementation of CLOS.
1632 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1633 (reported by tomppa on #lisp)
1634 * bug fix: clear the direction flag on Lisp -> C transitions, as
1635 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1636 (reported by Andrej Grozin and Hendrik Maryns)
1637 * optimization: major improvements to GC efficiency on GENCGC platforms
1638 * optimization: faster implementation of EQUAL
1639 * optimization: emit more efficient opcodes for some common
1640 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1641 * optimization: several other minor code-generation improvements on x86-64
1642 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1644 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1645 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1646 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1647 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1648 by ANSI as a generic function, and for consistency (SETF
1649 GENERIC-FUNCTION-NAME) is treated likewise.
1650 * fixed bug #233.b: make constraint propagation notice when a variable
1651 value is changed after it is referenced but before it is used
1652 * fixed bug #296: no more arbitrary behaviour from filenames with
1653 odd characters as --load arguments. (reported by Adam Warner)
1654 * fixed bug #390: :CHARACTER-SET pathname components now work as
1655 expected. (reported by Tim Daly Jr)
1656 * fixed bug #391: complicated :TYPE intersections in slot
1657 definitions no longer cause an error in PCL internals.
1658 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1659 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1660 returning the number of octets which would be written to the
1661 file-stream. (thanks to Robert J. Macomber)
1662 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1663 arguments to the internal stream functions. (thanks to David
1665 * bug fix: stack exhaustion is now handled on the x86/SunOS
1666 platform. (thanks to Daisuke Homma)
1667 * bug fix: more accurate ROOM results on GENCGC platforms
1668 * optimization: improved type inference for arithmetic-for
1669 index variables in LOOP
1670 * optimization: faster floating-point SQRT on x86-64
1671 * fixed some bugs revealed by Paul Dietz' test suite:
1672 ** DOCUMENTATION returns NIL instead of "" for method combinations
1673 that don't have a docstring
1675 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1676 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1677 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1678 therefore are not customizeable by user code (as seems to be at
1679 least permitted and maybe required by AMOP). As a consolation,
1680 however, the SBCL implementation of these functions now calls
1681 REINITIALIZE-INSTANCE as specified by AMOP.
1682 * bug fix: slot-definition documentation is propagated as per ANSI
1683 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1684 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1685 argument, as do eslotd initialization methods. (from Pascal
1686 Costanza's "Closer" project)
1687 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1688 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1690 * bug fix: it is now possible to have more than one subclass of
1691 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1692 (reported by Bruno Haible, Pascal Costanza and others)
1693 * bug fix: the dependent update protocol now works for generic
1694 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1695 and Pascal Costanza)
1696 * bug fix: condition-class instances corresponding to
1697 DEFINE-CONDITION forms are now created eagerly. (reported by
1698 Kalle Olavi Niemitalo on comp.lang.lisp)
1699 * bug fix: floating point printing is more accurate in some
1700 circumstances. (thanks to Simon Alexander)
1701 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1702 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1703 * bug fix: callbacks on OS X now preserve stack-alignment.
1704 (thanks to Cyrus Harmon)
1705 * enhancement: the x86-64 disassembler is much better at
1706 disassembling SSE instructions. (thanks to Lutz Euler)
1707 * enhancement: CHECK-TYPE on a variable now allows type-inference
1708 (thanks to Vincent Arkesteijn)
1709 * optimization: improved performance of EUC-JP external format.
1710 (thanks to NIIMI Satoshi)
1711 * optimization: performance improvements to IO on file streams of
1712 :ELEMENT-TYPE CHARACTER
1713 * optimization: much faster memory allocation on x86-64
1714 * optimization: faster garbage collections (latency and throughput)
1716 * optimization: faster bignum subtraction and division on x86 and x86-64
1717 (thanks to Lutz Euler)
1718 * optimization: more accurate type-inference for loops that use a
1719 floating point index variable or a negative step.
1721 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1722 * bug fix: add a workaround to SBCL looping infinitely at startup on
1723 Linux kernels with apparently buggy implementations of personality().
1724 (thanks to Svein Ove Aas)
1725 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1726 (thanks to David Lichteblau)
1727 * bug fix: local bindings shadow global symbol macros for
1728 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1729 * optimization: non-open coded uses of numeric comparison operators
1730 (e.g. >) no longer cons when called with more than one parameter
1731 on platforms supporting dynamic-extent allocation.
1732 * enhancement: saving cores with foreign code loaded is now supported
1733 on MIPS/Linux in addition to the previously supported platforms.
1734 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1735 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1736 * bug fix: division by zero in sb-sprof when no samples were collected
1737 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1738 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1739 (thanks to Alexander Kjeldaas)
1740 * new feature: ignoring the return values of destructive functions
1741 like NREVERSE signals a compile-time style-warning.
1742 (thanks to Kevin Reid)
1743 * new feature: the alignment of alien structure fields can be
1744 explicitly specified. (thanks to Cyrus Harmon)
1745 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1746 and dump core on SIGQUIT
1748 ** incompatible change: threads do not inherit values of specials
1749 from their parents (see manual)
1750 ** bug fix: threads stacks belonging to dead threads are freed by the
1751 next exiting thread, no need to gc to collect thread stacks anymore
1752 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1753 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1754 ** bug fix: dynamic variable and thread start related gc lossage
1755 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1757 * fixed some bugs revealed by Paul Dietz' test suite:
1758 ** SUBTYPEP is slightly more accurate on heinously complicated
1759 CONS types where some of the members have uncertain (in the
1760 NIL, NIL sense) type relationships to each other.
1762 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1763 no longer purified unless :PURIFY T is explicitly specified.
1764 ** Non-purified cores are significantly smaller than before
1766 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1767 * new feature: timers based on Zach Beane's excellent timer package
1768 * added support for the following external formats: koi8-u,
1769 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1770 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1771 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1772 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1773 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1774 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1775 * incompatible change: a threaded SBCL will no longer revert to
1776 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1777 * bug fix: interrupts are disabled until startup is complete; no
1778 more sigsegvs when receiving a signal to soon
1779 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1781 * bug fix: add a workaround for the memory randomization features in
1782 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1783 workaround will only be in effect on systems with the proc filesystem
1785 * bug fix: printing objects of type HASH-TABLE signals a
1786 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1788 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1789 have been running for over 50 days. (reported by Gilbert Baumann)
1790 * bug fix: the logic for getting names of functions gets less
1791 confused when confronded with alternate-metaclass
1792 funcallable-instances. (reported by Cyrus Harmon)
1793 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1794 consistent, even on internal alternate-metaclass objects.
1795 * bug fix: flush closure information collected by physical
1796 environment analysis prepass before the main pass. (bug reported
1798 * bug fix: compiler pack phase does not modify a hashtable, which is
1799 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1800 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1801 may be expanded. (reported by Alexander <malishev> on c.l.l)
1802 * bug fix: no more style-warnings when compiling code using LAST
1803 under high-SPEED low-SPACE settings. (reported by David Wallin
1805 * fixed some incompatibilities between SBCL's MOP and the MOP
1807 ** the METAOBJECT class is now implemented;
1808 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1809 STANDARD-OBJECT, as required;
1810 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1811 now compatible (as required by VALIDATE-SUPERCLASS); there
1812 remains a consistency requirement over the presence or absence
1813 of the FUNCTION class in the superclass list of finalized
1814 classes; see the manual for more details;
1815 ** the :AROUND method for COMPUTE-SLOTS on
1816 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1817 requested slot ordering.
1819 ** bug fix: parent thread now can be gc'ed even with a live
1821 ** bug fix: binding a special with PROGV to no value is not
1822 the same as that symbol not having been bound (thanks to
1824 ** bug fix: binding specials is thread safe (thanks to
1826 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1827 and SB-SPROF do not die with 'no handler for signal XX in
1828 interrupt_handle_now(..)' anymore
1829 ** bug fix: WITH-TIMEOUT works with multiple running threads
1830 * fixed some bugs revealed by Paul Dietz' test suite:
1831 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1832 the :method-class keyword argument.
1834 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1835 * new port: the Solaris operating system on x86 processors is now
1836 mostly supported, though some rough edges in the environment
1837 remain. (thanks to Daisuke Homma)
1838 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1839 space for its heap. (thanks to Thiemo Seufer)
1840 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1841 closures. (thanks to Thiemo Seufer)
1842 * minor incompatible change: eof selects abort in the debugger.
1843 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1844 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1846 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1847 deprecated, and will go away in a future revision of SBCL.
1848 * minor incompatible change: GC-ON and GC-OFF are no longer
1849 implemented with a counter, it does not matter how many times gc
1850 is switched on or off
1851 * bug fix: discriminating functions for generic function classes
1852 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1853 make invalid assumptions about method precedence order. (reported
1855 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1856 platforms. (thanks to Thiemo Seufer)
1857 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1858 * bug fix: correct pathname printing with printer escaping is on.
1859 (thanks to Kevin Reid)
1860 * bug fix: complex VOP definitions in "user-space" no longer trigger
1861 package locks. (reported by Zach Beane)
1862 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1863 for funcallable-instance functions, and is no different from
1865 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1866 characters in the current readtable. (reported by Nicholas Neuss)
1867 * bug fix: SUBTYPEP on various CONS types returns more a more
1868 accurate acknowledgment of its certainty.
1869 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1870 lists in some cases. This partially fixes bug 384.
1871 * flush all standard streams before prompting in the REPL and the
1873 * bug fix: signal handling and triggering gc do not conflict
1874 directly anymore, in particular a high frequency sb-sprof does
1875 not prevent gc from running
1876 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1877 approximation for timezone and DST information between the
1878 universal time epoch and the smallest negative 32-bit time_t.
1879 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1880 year 1899 so long as the encoded time is non-negative.
1881 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1882 the correct answer for non-constant rotate amounts when performing
1883 an inline 32-bit rotation.
1885 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1886 there is only one thread in the session
1887 ** bug fix: memory leak for streams created in one thread and
1888 written to in another
1889 ** bug fix: lockup when compiled with gcc4
1890 ** bug fix: race that allows the gc to be triggered when gc is
1892 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1893 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1895 ** bug fix: finished threads are gc'ed properly
1896 * fixed some bugs revealed by Paul Dietz' test suite:
1897 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1898 has arguments with a different set of applicable methods from
1899 the orignal arguments.
1900 ** The type error thrown by MAP now has a correct expected-type
1902 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1903 name a compiled function.
1904 ** Three MISC tests where a large bignum was improperly coerced to
1905 a float that couldn't represent that bignum during type
1906 derivation were fixed.
1907 ** SUBTYPEP can now handle types involving the negation of a
1908 list-form FUNCTION type.
1909 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1910 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1911 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1913 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1914 * New feature: Experimental support for bivalent streams: streams
1915 opened with :element-type :default now allow character and binary
1916 (unsigned-byte 8) I/O
1917 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1918 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1920 * bug fix: no more highly sporadic "couldn't check whether ~S is
1921 readable" when reading a stream and an interrupt hits in the middle
1922 of a select system call
1923 * compiler better recognizes complex arrays (reported by Eduardo
1925 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1926 for variables on SBCL built with linkage-tables. (reported by Luis
1928 * various error reporting improvements.
1929 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1930 (Thanks to Thiemo Seufer)
1931 * bug fix: nested reader invokations work correctly
1932 * bug fix: it is possible to have simultaneous references to foreign
1933 code and foreign data with the same name.
1935 ** added x86-64 support
1936 ** incompatible change: the threading api now works with thread
1937 objects instead of thread ids
1938 ** bug fix: threads are protected from signals and interruption when
1939 starting up or going down
1940 ** bug fix: a race where an exiting thread could lose its stack to gc
1941 ** bug fix: don't halt on infinite error in threads if possible
1942 ** fixed numerous gc deadlocks introduced in the pthread merge
1943 ** bug fix: fixed thread safety issues in read and print
1944 ** bug fix: debugger doesn't hang on session lock if interrupted at
1945 an inappropriate moment
1946 ** bug fix: run-program is now thread safe(r)
1947 ** bug fix: inner with-recursive-lock no longer releases the mutex
1948 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1949 * fixed some bugs revealed by Paul Dietz' test suite:
1950 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1951 EXPECTED-TYPE slots filled.
1952 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1954 ** MAKE-CONDITION accepts classes as type-designators.
1955 ** COMPILE may never return NIL.
1956 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1957 range before calling Unix time functions
1959 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1960 * numerous signal handling fixes to increase stability
1961 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1962 * minor incompatible change: we now correctly canonize default
1963 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1964 as per the MOP, rather than the historical (INITARG INITFUNCTION
1965 INITFORM). (reported by Bruno Haible)
1966 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1967 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1968 for more information.
1969 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1970 pathname is a directory pathname.
1971 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1972 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1974 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1975 :METACLASS argument in addition to a class name. (reported by
1976 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1977 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1978 (reported by Bruno Haible; patch from Gerd Moellmann)
1979 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1981 * bug fix: more cleanups to the floating point exception handling on
1982 x86-64 (thanks to James Knight)
1983 * bug fix: the compiler does not try to constant fold calls of
1984 COERCE and BIT-* functions when they return freshly constructed
1985 objects. (reported by Nikodemus Siivola and Paul Dietz)
1986 * optimization: improved the MIPS versions of generic (in the
1987 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1988 * optimization: direct conversion of (unsigned-byte 32) to floats on
1989 the PowerPC platform.
1990 * optimization: structure instances with raw slots now use less
1991 memory, and probably show better memory locality. (thanks to
1993 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1994 are treated as requests for stack allocation on the x86-64,
1995 Alpha-32, PPC and SPARC platforms.
1996 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1997 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1998 (thanks to Tony Martinez)
2000 ** gcing a dead thread can no longer lead to lockups
2001 ** threads block signals until they are set up properly
2002 ** errno is no longer shared by threads
2003 ** interrupt-thread restores the eflags register on x86
2004 ** fixed some lockups due to gc/thread interaction
2005 * fixed some bugs revealed by Paul Dietz' test suite:
2006 ** invalid dotted lists no longer raise a read error when
2007 *READ-SUPPRESS* is T
2008 ** signal an error if a symbol that names a declaration is used
2009 as the name of a type, or vice versa
2010 ** allow using the (declare (typespec var*)) abbreviation for
2011 (declare (type typespec var*)) with all type specifiers
2012 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2013 ** always return NIL from PPRINT-POP when OBJECT is NIL
2014 ** don't signal errors when pretty-printing malformed LABELS,
2015 FLET or MACROLET forms
2016 ** declarations in a DOLIST body are also in scope for the
2018 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2020 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2023 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2024 * fixed cross-compiler leakages that prevented building a 32-bit
2025 target with a 64-bit host compiler.
2026 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2027 opened with :IF-EXISTS :OVERWRITE.
2028 * fixed bug 281: error for an invalid qualifier in a short-form method
2029 combination method is not signalled until the faulty method is called.
2030 * bug fix: iteration variable type inferrer failed to deal with open
2031 intervals. (reported by Alan Shields)
2032 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2033 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2034 or more runtime options were provided to the sbcl binary.
2035 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2036 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2037 * optimization: there's now a fast-path for fixnum arguments in the
2038 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2039 * optimization: the code generated on x86-64 is more compact thanks
2040 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2041 * bug fix: floating-point exception handling now partly works on
2042 x86-64. (Thanks to James Knight)
2043 * improvement to the MIPS backend from Thiemo Seufer: C-style
2044 64-bit long long arguments and return values to alien functions
2046 * fixed some bugs revealed by Paul Dietz' test suite:
2047 ** the type-error signalled from WARN has a filled-in DATUM slot.
2048 ** the type-error required when a stream is not associated with
2049 a file has the stream as its datum.
2050 ** type-errors on single-floats on x86-64 no longer have
2051 :INVALID-OBJECT as the datum
2052 ** the type-errors signalled for invalid function names now have
2053 a correct expected type
2054 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2055 for structures defined with a :TYPE. Documentation strings for
2056 typed structures are no longer immediately discarded
2057 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2058 broadcast streams and synonym streams. FILE-LENGTH now also works
2059 on broadcast streams.
2061 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2062 * incompatible change: the --noprogrammer option, deprecated since
2063 version 0.7.5, has been removed. Please use the equivalent
2064 --disable-debugger option instead.
2065 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2067 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2068 inoperational for a while now) has been completely removed.
2069 * null lexical environments are now printed as #<NULL-LEXENV>,
2070 significantly reducing the amount of clutter in typical backtraces.
2071 * documentation on weak pointers, finalization, and after GC hooks
2072 has been added to the manual.
2073 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2074 as other specialized array types, is much faster. SUBSEQ and
2075 COPY-SEQ on such arrays have also been sped up.
2076 * optimization: EQL is now more efficient when at least other argument
2077 is known to be of type (OR FIXNUM (NOT NUMBER)).
2078 * fixed bug: the runtime is now less vulnerable to changes in the
2079 size of the SBCL object on OS X, and virtual memory is reserved for
2080 all spaces that need to be at a fixed address.
2081 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2082 * fixed bug: finalizers and after GC hooks that cause consing are now
2084 * fixed bug: compiler error messages and summaries are now printed to
2085 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2086 * fixed inference of the upper bound of an iteration variable.
2087 (reported by Rajat Datta).
2088 * fixed bug 211e: calling local functions with duplicated constant
2089 keyword argument no longer causes a bogus style warning about an
2091 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2092 ftype declaration to be disregarded. (reported by Dave Roberts)
2093 * fixed bug 373: caused by erronous compilation of references to alien
2094 variables in the runtime on ppc/darwin.
2095 * fixed bug 376: CONJUGATE type deriver.
2096 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2097 (reported by Baughn on #lisp)
2098 * a cross-compiler bug on non-x86 platforms has been identified and
2099 fixed. (thanks to Bruno Haible)
2100 * improvements to the MIPS runtime code for increased stability.
2101 (thanks to Thiemo Seufer)
2102 * increased the maximimum compact environment size to allow
2103 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2104 * partial workaround for bug 135: don't name the function we're
2105 calling for hairy cases of EVAL, so as not to accumulate one environment
2106 entry per call to EVAL. (reported by Kevin Reid)
2107 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2108 * optimization: type testing for non-vector arrays should be faster.
2109 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2111 * bug fix: setting 31st element of a bit vector to zero did not work
2113 * bug fix: redefining a class definition which failed due to a
2114 previous accessor / function clash now works (but see BUGS entry
2115 #380 for more problems in this area). (thanks to Zach Beane)
2116 * the long form of DEFINE-METHOD-COMBINATION disables method group
2117 checking when given a single method group with pattern *. (thanks
2119 * on x86 compiler supports stack allocation of results of simple
2120 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2121 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2122 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2123 * fixed some bugs related to Unicode integration:
2124 ** the restarts for recovering from input and output encoding
2125 errors only appear when there is in fact such an error to
2127 * fixed some bugs revealed by Paul Dietz' test suite:
2128 ** MISC.549 and similar: late transformation of unsafe type
2129 assertions into derived types caused unexpected code
2131 ** SCALE-FLOAT type deriver is less wrong.
2132 ** type derivers for EXP, LOG and similar functions compute result
2133 types for complex arguments better.
2134 ** (MISC.563) CONJUGATE type deriver works for very restricted
2136 ** out-of-line type testers for character strings are available.
2137 ** EQUAL compiler transform understands specialness of objects
2139 ** accessing double-floats stored on the stack now works on x86-64.
2140 ** debugger internals could sometimes create invalid lispobjs,
2141 resulting in GC crashes.
2142 ** MISC.548: type check weakening can convert required type into
2144 ** initialization forms for bindings are not in scope of free special
2147 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2148 * incompatible change: thread support for non-NPTL systems has
2149 been removed - locking is buggy and unreliable. A threaded
2150 SBCL build will now warn at startup and refuse to create
2151 new threads, unless futex support is detected in the kernel
2152 * incompatible change: the top level REPL now has only an ABORT
2153 restart associated with it, not TOPLEVEL and ABORT as it used to.
2154 TOP and TOPLEVEL are now available as debugger commands for
2155 returning to the top level.
2156 * incompatible change: forms evaluated in the REPL now use the
2157 global optimization policy.
2158 * incompatible change: user- and system-initialization files are
2159 no longer processed with LOAD, but by READ and EVAL; hence the
2160 global optimization policy, startup package, readtable, etc,
2162 * The .fasl file format number has been incremented because of
2163 various incompatible changes.
2164 * internal entry point details and argument counts no longer appear
2165 in backtraces unless explicitly requested by setting
2166 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2167 * built-in and standard functions no longer have names like "top
2168 level local call to FOO".
2169 * fixed bug 32: functions defined in non-null lexical environments
2170 now have more legible printed representation
2171 * fixed bug 33: functions defined in non-null lexical environemnts
2172 are now more amenable to inspection by INSPECT.
2173 * workaround for bug 354: XEPs no longer appear in backtraces unless
2174 explicitly requested.
2175 * fixed bug: receiving the signal which results from attempting to
2176 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2177 SIGBUS on other *BSDs) on architectures where the C stack is also
2178 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2179 to debugger confusion or wild instability. (reported by Cheuksan
2181 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2182 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2183 (reported by Lutz Euler)
2184 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2185 compiled code. (reported by Paul Dietz)
2186 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2187 specialized parameter to a method to something that is not TYPEP
2188 the specializer is now possible.
2189 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2190 face of package deletion.
2191 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2192 pathname. (reported by David Tolpin on c.l.l)
2193 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2194 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2195 STRING-STREAM and FILE-STREAM, respectively.
2196 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2197 than previously; in addition, its test suite is now run on build.
2198 (thanks to Luke Gorrie)
2199 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2200 * optimization: added a immediate representation for single-floats
2202 * fixed some bugs revealed by Paul Dietz' test suite:
2203 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2204 ** attempting to create a package with a colliding nickname causes
2205 correctable errors to be signalled.
2206 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2207 ** several x86-64 backend bugs related to sign-extension of immediate
2210 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2211 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2212 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2214 * fixed loading of multiply forward-referenced layouts.
2215 (thanks to Cheuksan Wang)
2216 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2217 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2218 (see COMPILE-FILE documentation for details of :PRINT option)
2219 * fixed bugs 19 and 317: fixed-format floating point printing is
2220 more accurate. This also fixes a bug reported by Adam Warner
2221 related to the ~@F format directive.
2222 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2224 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2225 dispatch table if the from-char is a dispatch macro character.
2226 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2227 by the wordsize no longer ignore the last word. (reported by Lutz
2229 * fixed bug in type checking of dynamic-extent variables. (reported
2231 * optimization: sequence traversal functions use their freedom to
2232 coerce function designators to functions.
2233 * optimization: code with many calls to CLOS methods specialized on
2234 CLOS classes has had redundant type checks removed.
2235 * optimization: added declarations to speed up operations that access
2236 the internal character database (for example STRING-UPCASE)
2237 * optimization: comparison operations between floats and sufficiently small
2238 fixnums no longer create extra rationals
2239 * fixed some bugs related to Unicode integration:
2240 ** portions of multibyte characters at the end of buffers for
2241 character-based file input are correctly transferred to the
2242 start of the buffer at the next read.
2243 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2244 passing it through to OPEN.
2245 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2246 argument given to internal calls to OPEN.
2247 ** the built-in comment readers (introduced by character sequences
2248 ";" and "#|") are more forgiving to encoding errors; they will
2249 STYLE-WARN and then attempt to resync the stream at a character
2250 boundary. (thanks to Teemu Kalvas)
2251 * fixed some bugs in the x86-64 port:
2252 ** Negative short int return values from c-calls are sign-extended
2254 ** The stack is aligned to 16-bytes for c-calls, as required by
2255 the ABI. (thanks to Cheuksan Wang)
2256 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2257 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2258 for enums. (thanks to Vincent Arkesteijn)
2259 ** Multiple small optimizations and bugfixes for floating point
2261 * fixed some bugs revealed by Paul Dietz' test suite:
2262 ** Space, Tab, Linefeed, Return and Page have the invalid
2263 secondary constituent character trait.
2264 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2266 ** WITH-INPUT-FROM-STRING should only update the index place on
2268 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2269 works more reliably.
2270 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2271 with one-dimensional arrays with fill pointers.
2272 ** TYPE-OF failed on a complex with an integer realpart and a
2274 ** compiler failure during type inference for the code of form
2275 (IF (EQL X (THE ...)) ...) (MISC.535).
2277 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2278 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2279 platform. The port supports 61-bit fixnums, large memory spaces
2280 and reloading shared object files.
2281 * enhancement: saving cores with foreign code loaded is now
2282 supported on ppc/Darwin in addition to the previously supported
2284 * enhancement: the statistical profiler now walks deeper into the
2285 call stack for more meaningful call-graphs and accrued time
2286 reports (x86/x86-64 only). It also now reports time spent in
2288 * enhancement: it is now possible to trace most individual methods
2289 of a generic function in addition to tracing the generic function
2291 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2293 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2294 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2295 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2296 produces an error. (thanks to Vincent Arkesteijn)
2297 * bug fix: NAMESTRING on pathnames with :WILD components in their
2298 directories works correctly. (thanks to Artem V. Andreev)
2299 * fixed bug 125: compiler preserves identity of closures. (reported
2301 * bug fixed: functions with &REST arguments sometimes failed with
2302 "Undefined function" when compiled with (DEBUG 3). (reported by
2304 * bug fix: overflow during compiling of setting element of a bit
2305 vector with constant index and value. (reported by Timmy Douglas)
2306 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2307 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2308 * on x86 compiler partially supports stack allocation of dynamic-extent
2310 * GO and RETURN-FROM do not check the extent of their exit points
2311 when compiled with SAFETY 0.
2312 * fixed some bugs related to Unicode integration:
2313 ** encoding and decoding errors are now much more robustly
2314 handled; it should now be possible to recover even from invalid
2315 input or output to the terminal. (thanks to Teemu Kalvas)
2316 ** provided a first cut at implementing STRING-TO-OCTETS and
2317 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2318 ** altered the SB-MD5 contributed module slightly, changing the
2319 interface just enough for it to be supportable for builds where
2320 lisp characters are not eight bits.
2321 * fixed some bugs revealed by Paul Dietz' test suite:
2322 ** the FORMATTER-generated functions for ~V[ conditionals require
2323 the correct number of arguments.
2324 ** READ-FROM-STRING returns the mandated second value when applied
2325 to displaced strings.
2326 ** the #\Rubout and #\Backspace characters are treated as invalid
2327 constituent characters by the tokenizer.
2329 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2330 * new feature: reloading changed shared object files with
2331 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2332 * new feature: references to foreign variables and functions
2333 can now be compiled and loaded before the corresponding shared
2334 object file is loaded, as long as the foreign definitions are
2335 available at runtime.
2336 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2337 supported. (thanks to Dan Debertin)
2338 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2339 just keywords. (thanks to Vincent Arkesteijn)
2340 * fixed bug #331: structure-class instances corresponding to
2341 DEFSTRUCT forms are now created eagerly.
2342 * fixed bug #345: backtraces from calls to undefined functions work
2343 on x86 as well. Related bug #61 is now also partially fixed on x86
2344 (backtraces from throws to unknown catch tags.)
2345 * bug fix: lambda-list parsing is now stricter vrt. order and number
2346 of lambda-list keywords.
2347 * bug fix: as specified by AMOP, an error is signalled if a
2348 class-option appears multiple times in a DEFCLASS form. (reported
2350 * bug fix: RANDOM can be compiled when the compiler derives the type
2351 of its numeric argument as a disjoint set of small integers.
2352 (reported by Paul Dietz)
2353 * bug fix: starting a core saved with shared objects loaded when
2354 those objects are not available no longer causes threaded SBCL to
2355 hang. (reported by Sean Ross)
2356 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2358 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2359 argument, which must always be NIL. (reported by Kalle Niemitalo)
2360 * bug fix: printing 1.0d+23 no longer results in an error.
2361 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2362 * bug fix: structure slot setters preserve evaluation order. (thanks
2364 * fixed some bugs related to Unicode integration:
2365 ** RUN-PROGRAM can allow its child to take input from a Lisp
2366 stream. (reported by Stefan Scholl)
2367 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2368 locales. (reported by Ken Causey)
2369 * fixed some bugs revealed by Paul Dietz' test suite:
2370 ** INCF, DECF and REMF evaluate their place form as specified in
2372 ** FORMATTER expands ~{ ~} iteration directives with V or #
2373 parameters correctly.
2374 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2375 consequent uses no arguments correctly.
2376 ** the system has a partial understanding of the (COMPLEX RATIO)
2378 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2381 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2382 * new feature: a build-time option (controlled by the :SB-UNICODE
2383 keyword feature, enabled by default) for building the system with
2384 support for the entire 21-bit character space defined by the
2386 * new feature: the system now has rudimentary external-format
2387 support; the primary user-visible change at this time is that
2388 characters with the high bit set (such as lower-case-e-acute) will
2389 print correctly to a terminal in a UTF-8 environment.
2390 * minor incompatible change: BASE-CHAR no longer names a class;
2391 however, CHARACTER continues to do so, as required by ANSI.
2392 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2393 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2394 has been moved to the SB-EXT package (temporarily re-exported from
2396 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2397 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2399 * fixed bug #351: better error-handlind and reporting for malformed
2401 * fixed bug #350: bignum-printing is now more memory-efficient,
2402 allowing printing of very large bignums, eg. (expt 2 10000000).
2403 (reported by Bruno Haible)
2404 * fixed bug #302: better primitive-type selection for intersection
2406 * fixed bug #308: non-graphic characters now all have names, as
2407 required. (reported by Bruno Haible)
2408 * bug fix: redefining a class with different superclasses now correctly
2409 removes it from the direct-subclasses of its previous superclasses.
2410 (reported by David Morse)
2411 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2412 new value now works. (reported by Bruno Haible)
2413 * bug fix: correct canonicalization of multiple non-standard slot
2414 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2415 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2416 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2417 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2418 now exists, an signals an error.
2419 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2420 during macroexpansion for non-iteration variables as well. (reported
2421 by Bruno Haible for CMUCL)
2422 * bug fix: Cyclic structures and unprintable objects in compiler
2423 messages no longer cause errors. (reported by Bruno Haible)
2424 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2425 and READ-FROM-STRING all now return a primary value of NIL if
2426 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2427 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2428 (reported by Bruno Haible for CMUCL)
2429 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2430 do not designate a condition. (reported by Bruno Haible for
2432 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2433 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2434 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2435 permitting resolution in favour of any of the conflicting symbols.
2436 (reported by Bruno Haible for CMUCL)
2437 * bug fix: EQUAL compiler optimizations is less aggressive on
2438 strings which can potentially compare true despite having distinct
2439 specialized array element types.
2440 * bug fix: unit enumerations can be defined without dividing by
2441 zero. (thanks to Vincent Arkesteijn)
2442 * FORMAT compile-time argument count checking has been enhanced.
2443 (report from Bruno Haible for CMUCL)
2444 * a partial workaround for the bug 262: the compiler does not try to
2445 inline-expand a local function doing RETURN-FROM from a deleted
2446 BLOCK. (thanks to Peter Denno for the bug report and to David
2447 Wragg for the simple test case)
2448 * fixed some bugs revealed by Paul Dietz' test suite:
2449 ** RENAME-PACKAGE allows all package designators as new package
2451 ** constraint propagation and lambda variable substitution are
2452 more cautious in dealing with partially deleted code.
2453 ** compiler sometimes lost reoptimization passes.
2454 ** CERROR, given a condition as condition designator, passes its
2455 remaining arguments to the continue format control without
2457 ** Case-altering FORMAT directives work correctly on non-ASCII
2459 ** The REAL type specifier handles bounds outside the floating
2460 point ranges without signalling FLOATING-POINT-OVERFLOW.
2461 ** Functions with IR1-transformations can create intercomponent
2462 references to global functions.
2463 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2465 ** FORMAT ~R treats a nil value for its first parameter correctly.
2467 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2468 * enhancement: saving cores with foreign code loaded is now
2469 supported on x86/NetBSD and sparc/Linux in addition to the previously
2470 supported platforms.
2471 * bug fix: on some platforms repeated installations caused multiple
2472 copies of HTML documentation to be installed -- should not happen
2473 any more. (reported by Stefan Scholl)
2474 * bug fix: parsing self-recursive alien record types multiple times
2475 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2476 original patch by Helmut Eller for CMUCL)
2477 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2478 (thanks to Richard Kreuter)
2479 * bug fix: defining classes whose accessors are methods on existing
2480 generic functions in other (locked) packages no longer signals
2481 bogus package lock violations. (reported by François-René Rideau)
2482 * bug fix: special variables as DEFMETHOD parameters no longer have
2483 associated bogus type declarations. (reported by David Wragg and
2485 * bug fix: read-write consistency on streams of element-type
2486 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2487 * bug fix: redefiniton of the only method of a generic function with
2488 no DEFGENERIC no longer emits a full WARNING. In addition,
2489 redefinition of generic functions with no DEFGENERIC to an
2490 incompatible lambda list now signals an error. (thanks to Zach
2492 * bug fix: DEFGENERIC now works even when there's a function of the
2493 same name in an enclosing lexical environment. (thanks to Zach
2495 * fixed compiler failure, caused by instrumenting code during
2496 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2497 * optimization: added loop analysis and improved register allocation
2498 * fixed some bugs revealed by Paul Dietz' test suite:
2499 ** POSITION on displaced vectors with non-zero displacement
2500 returns the right answer.
2501 ** (SIMPLE-STRING) is a valid type specifier for sequence
2503 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2505 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2506 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2508 ** The justification version of the FORMAT ~< directive treats
2509 non-zero minpad parameter correctly.
2511 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2512 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2513 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2514 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2515 the supported interface.
2516 * new feature: Single-stepping of code compiled with DEBUG 2 or
2517 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2518 * new feature: saving cores with foreign code loaded is now
2519 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2520 Timothy Moore's work for CMUCL)
2521 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2522 parameters to * instead of NIL if no initform is supplied.
2523 (reported by Johan Bockgaard)
2524 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2525 correctly when FUNCALL appears as the car of the form. Note:
2526 despite this FUNCALL forms are not currently subject to
2527 compiler-macro expansion. (port of Raymond Toy's fix for the
2528 same from CMUCL, reported by Johan Bockgaard)
2529 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2530 (thanks for Teemu Kalvas)
2531 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2532 case instead of terminating the iteration (thanks for Julian
2533 Squires, Sean Champ and Raymond Toy)
2534 * bug fix: incorrect expansion of defgeneric that caused a style
2535 warning. (thanks for Zach Beane)
2536 * bug fix: slot accessor effective method computation works properly
2537 for classes with multiple non-standard applicable methods on
2538 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2539 * on x86 compiler supports stack allocation of results of LIST and
2540 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2541 CMUCL implementation by Gerd Moellmann)
2542 * fixed some bugs revealed by Paul Dietz' test suite:
2543 ** FORMAT strings with both the ~<~:;~> form of the justification
2544 directive and pretty-printing directives cause an error.
2546 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2547 * incompatible change: the internal functions
2548 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2549 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2550 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2551 instead of the old functions.
2552 * new feature: on platforms where "dladdr" is available foreign
2553 function names now appear in backtraces. (based on Helmut Eller's
2555 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2556 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2558 * documentation: ASDF manual is now distributed with SBCL.
2559 * bug fix: SBCL can now load its contributed modules with REQUIRE
2560 even if the system-provided entries have been removed from
2561 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2563 * bug fix: backtraces involving undefined functions or assembly
2564 routines are more informative. (thanks to Brian Downing)
2565 * bug fix: mutually referent alien structures now work correctly.
2566 (reported by Rick Taube)
2567 * bug fix: structures defined by WITH-ALIEN can be referred to
2568 within other definitions in the same WITH-ALIEN.
2569 * bug fix: division operators (MOD, TRUNCATE and the like) with
2570 constant zero divisors and integer dividends no longer generate
2572 * bug fix: provide default methods for INPUT-STREAM-P and
2573 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2574 * bug fix: improve the detection and resolution of MOP metacycles
2575 (where effective method computation depends on the generic function
2576 having its effective method computed). (reported by Bruno Haible)
2577 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2578 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2579 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2580 * bug fix: pathnames with relative directory components can be
2581 represented relative to default pathnames.
2582 * optimization: in taking the GCD of bignums, reduce the two bignums
2583 to approximately the same size (using Euclid's algorithm) before
2584 applying the more sophisticated binary GCD. (thanks to Juho
2586 * optimization: COUNT on bitvectors now operates word-at-a-time.
2587 * optimization: ASH with a positive, but not necessarily constant,
2588 (leftwards) shift, when in a modular context, is compiled to a
2590 * fixed some bugs revealed by Paul Dietz' test suite:
2591 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2592 if the corresponding argument is NIL.
2593 ** FORMAT directives accepting a minpad parameter treat negative
2595 ** literal commas as character parameters to FORMAT directives are
2597 ** literal spaces directly after ~<Newline> directives within a
2598 format-logical-block (~:< ~@:>) do not induce :FILL-style
2599 conditional newlines.
2600 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2601 as specified: it no longer includes conditional newlines).
2602 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2604 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2605 :PER-LINE-PREFIX argument does not evaluate to a string.
2607 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2608 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2609 the manual for details; for now, package locks can be disabled by
2610 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2611 if no major problems are found then it is likely that they will be
2612 compiled in unconditionally.
2613 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2614 unsupported operators on all platforms. To load a shared library
2615 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2616 object file, link it into a shared library outside of SBCL and
2617 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2619 * bug workaround: ROOM T and the GC were not working together
2620 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2621 reporting facility aren't preserved. That reporting has been
2622 disabled, so now until and unless someone figures out how to make it
2623 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2624 * minor incompatible change: as threatened around sbcl-0.8.0, the
2625 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2626 The symbols are also exported from SB-PCL for backwards
2627 compatibility, but more so than before SB-PCL should be treated as
2628 an implementation-internal package.
2629 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2631 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2632 It is known as of this release not to work on the Alpha, however.
2633 * fixed bug #167: errors signalled due to illegal syntax in method
2634 bodies are now more legible.
2635 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2636 designators and can hence be used with TYPEP.
2637 * fixed bug #333: CHECK-TYPE now ensures that the type error
2638 signalled, if any, has the right object to be accessed by
2639 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2640 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2641 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2643 * fixed bug #334: programmatic addition of slots using specialized
2644 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2645 and :ALLOCATION :CLASS slots.
2646 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2647 float exponents. (rereported by Peter Seibel)
2648 * fixed a bug: #\Space (and other whitespace characters) are no
2649 longer considered to be macro characters in standard syntax by
2650 GET-MACRO-CHARACTER.
2651 * fixed bug: initialization of condition class metaobjects no longer
2652 causes an instance of the condition to be created. (reported by
2654 * fixed bug: it is now possible to have slots such that
2655 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2656 description is neither :INSTANCE nor :CLASS.
2657 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2658 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2659 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2660 non-standard SLOT-DEFINITION-ALLOCATION values.
2661 * fixed bugs: various race conditions handling exiting threads.
2662 CL-PPCRE's thread torture test now passes.
2663 * fixed arguably-a-bug: GC time proportional to number of threads in
2664 system even when most of them are idle
2665 * optimization: improved performance of BIT and SBIT on bit-vectors.
2666 * .fasl file incompatibility: The fasl file version number has
2667 been incremented because of changes associated with package locks.
2669 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2670 * minor incompatible change: the system no longer provides
2671 optimization hints (conditions which are TYPEP
2672 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2673 mode; these hints are still emitted when higher SPEED optimization
2675 * new contrib module: a sampling profiler (profiling by statistical
2676 sampling, rather than by instrumenting functions) is available as
2677 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2678 * the behaviour of the standard function ED is now customizeable by
2679 third parties through a hook variable: see ED's documentation
2680 string for information on the protocol.
2681 * the compiler no longer emits efficiency notes for (FUNCALL X)
2682 when the type of X is uncertain under default optimization
2684 * fixed bug 276: mutating a binding of a specialized parameter to a
2685 method to something that is not TYPEP the specializer is now
2687 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2688 exhibit the required behaviour on the x86 platform. (thanks to
2689 Peter van Eynde, Eric Marsden and Bruno Haible)
2690 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2691 even for difficult arguments. (reported by Peter Graves)
2692 * fixed bug 141a: the backquote printer now descends quoted
2694 * fixed another bug in backquote printing: no more destructive
2695 modification of the form's list structure. (reported by Brian
2697 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2698 move between its address being taken and the call to
2699 interrupt_thread, fixing a crashing race condition.
2700 * the SB-POSIX contrib implementation has been adjusted so that it
2701 no longer exhibits ridiculously poor performance when constructing
2702 instances corresponding to C structs.
2704 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2705 * minor incompatible change: the sb-grovel contrib now treats C
2706 structures as alien (in the sense of SB-ALIEN) objects rather than
2707 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2708 has implications for memory management of client code
2709 (sb-grovel-returned objects must now be manually managed) and for
2710 type safety (alien objects now have full types).
2711 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2712 used to control emission of compiler diagnostics, rather than the
2713 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2714 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2715 quality should be considered deprecated.
2716 * install.sh now installs the user manual as well
2717 * (not quite a new documentable feature, but worth considering in
2718 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2719 beginnings of a semantically meaningful condition hierarchy is
2720 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2722 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2723 designator as the defaults argument.
2724 * fixed bug: Displaced arrays whose displaced-to array has become
2725 too small now cause ARRAY-DIMENSION to signal an error, providing
2726 for safer bounds-checking. (reported by Bruno Haible)
2727 * fixed bug: DEFCLASS slot definitions with identical :READER and
2728 :WRITER names now signal a reasonable error. (reported by Thomas
2730 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2732 * fixed bug: Invalid slot specification errors now print correctly.
2733 (thanks to Zach Beane)
2734 * fixed bug 320: Shared to local slot value transfers in class
2735 redefinitions now happen corrently from superclasses as
2736 well. (reported by Bruno Haible)
2737 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2739 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2740 improper lists correctly. (reported by Bruno Haible)
2741 * fixed bug 313: source-transform for <fun-name> was erroneously
2742 applied to a call of a value of a variable with name <fun-name>.
2743 (reported by Antonio Menezes Leitao)
2744 * fixed bug 307: The obsolete instance protocol ensures that
2745 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2746 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2747 remove dead unknown-values globs from the middle of the stack.
2748 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2749 easier to resume long computations after using *BREAK-ON-SIGNALS*
2750 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2751 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2752 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2753 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2754 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2755 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2757 * fixed a (fairly theoretical) bug in string printing: if
2758 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2759 does not have array-element-type equal to the most general string
2761 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2762 function name. (thanks to Nikodemus Siivola)
2763 * fixed bug: compile-time format string checker failed on
2764 non-closed ~{. (reported by Thomas F Burdick)
2765 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2766 don't warn on legal loop code involving more than one aggregate
2767 boolean. (thanks to Nikodemus Siivola)
2768 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2769 in keyword position to MAKE-PACKAGE was not being reported as
2771 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2772 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2774 * fixed bugs 280 and 312: the checking for multiple definitions in a
2775 file is less likely to become confused by uses of inline
2777 * fixed bug: the #S reader macro performs the keyword coercion
2778 specified for slot names. (reported by Kalle Niemitalo)
2779 * fixed bug: lambda lists may contain symbols whose names start with
2780 & but are not lambda-list-keywords; their occurrence triggers a
2782 * fixed bug 321: define-method-combination argument lambda lists do
2783 not cause invalid code to be generated when &optional or &aux
2784 variables have default values. (reported by Bruno Haible)
2785 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2786 have CLOS classes; this appears also to have fixed reported
2787 instability in stack exhaustion detection.
2788 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2789 MUFFLE-WARNING when no associated restart is present is now
2791 * optimization: rearranged the expansion of various defining macros
2792 so that each expands into only one top-level form in a
2793 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2795 * optimization: used a previously little-used slot in symbols to
2796 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2798 * fixed some bugs revealed by Paul Dietz' test suite:
2799 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2801 ** Fixed an optimization bug related to inheritance of initforms
2802 from local to shared slots.
2803 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2804 ** CAST optimizer forgot to flush argument derived type.
2805 ** print/read consistency on floats is now orders of magnitude
2806 more likely. (thanks also to Bruno Haible for a similar report
2808 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2809 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2810 for objects of type REAL. Make it so.
2811 ** SXHASH is specified (infelicitously) to respect similarity,
2812 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2813 it so. (thanks to Markus Ziegler)
2814 ** on the Alpha, the compiler succeeds in compiling functions
2815 returning a known number of arguments greater than 63.
2816 ** fixed handling of invalid NIL arguments in keyword position
2818 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2820 ** provided a readably-printable representation for RANDOM-STATE
2822 ** ensured that pathnames, where they have a namestring, always
2823 print using #P"..." syntax.
2825 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2826 * Support for the forthcoming 2.0 version of the NetBSD kernel
2827 running on x86 hardware has been added. (thanks to Perry
2828 E. Metzger most immediately, and others for their past work)
2829 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2830 current release version; SBCL's OpenBSD support had been broken
2831 since about the time of OpenBSD's switch to ELF binary format.)
2832 * [placeholder for DX summary]
2833 ** user code with &REST lists declared dynamic-extent, under high
2834 speed or space and low safety and debug optimization policy.
2835 * The manual has been converted to Texinfo format and the debugger
2836 chapter from the cmucl manual has been added.
2837 * A facility has been added to extract documentation strings from
2838 sbcl and store them as Texinfo-formatted snippets for inclusion in
2839 the manual (via Texinfo's @include directive)
2840 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2841 the test case to Dave Roberts)
2842 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2843 pointers. (reported by Sean Ross)
2844 * bug fix: PROFILE output is printed nicely even for large numerical
2845 values. (thanks to Zach Beane)
2846 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2847 greater than 32 handle EOF correctly.
2848 * bug fix: on X86 an immediate argument of the IMUL instruction is
2849 correctly printed in disassembly. (thanks to Lutz Euler)
2850 * bug fix: class slots in redefined classes preserve their old
2851 values. (thanks to Bruno Haible and Nikodemus Siivola)
2852 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2853 succeeds. (reported by Marco Baringer)
2854 * fixed some bugs revealed by Paul Dietz' test suite:
2855 ** READ-SEQUENCE now works on ECHO-STREAMs.
2856 ** RATIONALIZE works more according to its specification. (thanks
2859 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2860 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2861 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2862 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2863 should matter to you only if you rebind the printer control
2864 variables and then find you want different bindings in the
2865 debugger than in the ordinary execution of your program.)
2866 * The runtime build system has been tweaked to support building
2867 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2868 assembler and linker. (thanks to Nikodemus Siivola)
2869 * Unbound, undefined, undeclared variables now trigger full
2870 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2871 more often programmer error than deliberate exploitation of undefined
2873 * optimization: the hash algorithm for strings has changed to one
2874 that is less vulnerable to spurious collisions. (thanks to Juho
2876 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2877 needless bounds checking. (thanks to Juho Snellman)
2878 * optimization: implemented multiplication as a modular
2879 (UNSIGNED-BYTE 32) operation on the PPC backend.
2880 * fixed some bugs revealed by Paul Dietz' test suite:
2881 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2883 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2884 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2885 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2887 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2889 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2891 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2892 their output stream on EOF from read.
2893 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2894 have been read to end-of-file.
2895 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2897 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2898 description of determination of which consecutive characters
2900 ** Printing the "Space" character with escaping on now yields "#\\ ",
2901 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2902 ** Reading floating-point numbers with *READ-BASE* set to a number
2903 less than 10 works correctly.
2904 ** Reading floating-point numbers with *READ-BASE* set to a number
2905 more than 10 works correctly.
2906 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2907 the readtable currently in effect.
2909 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2910 * minor incompatible change: parsing of namestrings on a physical
2911 (Unix) host has changed; numbers after the final #\. in a
2912 namestring are no longer interpreted as a version field. This is
2913 intented to be largely invisible to the user, except that the
2914 meaning of the namestring "*.*.*" has changed: it now refers to a
2915 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2916 should usually be replaced by
2917 (make-pathname :name :wild :type :wild :version :wild)
2918 with the added benefit that this is more likely to be portable.
2919 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2920 option to OPEN now signals an error if the file being opened
2921 exists; this may have an impact on existing code.
2922 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2923 signals received, on the PowerPC platforms (both Linux and
2924 Darwin). (thanks to Pierre Mai for pointing out the location of
2926 * several fixes on OS X: The system now builds and runs cleanly on
2927 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2928 (thanks to Brian Mastenbrook)
2929 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2930 second-resolution: integer multiples of 1/3600 between -24 and 24.
2931 (thanks to Vincent Arkesteijn)
2932 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2933 type when called with 1 argument; PEEK-CHAR checked type of
2934 PEEK-TYPE only after having read first character from a
2935 stream. (reported by Peter Graves)
2936 * bug fix: the garbage collector now has much better locality
2937 behaviour, and in particular no longer treats all memory as being
2938 exhausted when many small objects point to each other in a deeply
2940 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2941 recognized as being TYPEP their class.
2942 * bug fix: the PUSHNEW documentation string has been corrected.
2943 (thanks to Vincent Arkesteijn)
2944 * bug fix: defaulting of the value for the last of an atypically
2945 large number of multiple values being bound was not being
2946 performed correctly on the Alpha or PPC platforms
2947 * optimization: implemented multiplication as a modular
2948 (UNSIGNED-BYTE 32) operation on the x86 backend.
2949 * optimization: SEARCH on simple-base-strings can now be open-coded.
2950 (see also contrib/compiler-extras.lisp for inspiration for
2951 teaching the compiler about the Boyer-Moore algorithm).
2952 * value, returned by MAX (and MIN) called with several EQUALP, but
2953 not EQL, arguments now does not depend on compiler settings.
2954 * fixed some bugs revealed by Paul Dietz' test suite:
2955 ** in stack analysis liveness information is propagated from
2956 non-local entry points.
2957 ** pathwise CAST removing failed when the CAST node did not start
2959 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2960 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2962 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2963 host is already defined.
2964 ** RENAME-FILE works on streams instead of signalling an internal
2966 ** PEEK-CHAR uses the current readtable when determining whether
2967 or not a character is whitespace.
2968 ** MERGE-PATHNAMES handles the case when the pathname does not
2969 specify a name while the default-pathname specifies a version.
2970 ** Pathnames now stand a better chance of respecting print/read
2972 ** Attempting to use standardized file system operators with a
2973 pathname with invalid :DIRECTORY components signals a
2975 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2977 ** DIRECTORY on logical pathnames is more correct.
2978 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2979 signal a TYPE-ERROR if their argument is not a stream.
2980 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2981 designator argument does not designate a stream.
2982 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2983 examining the synonym.
2984 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2986 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2987 element-type larger than ([UN]SIGNED-BYTE 32).
2989 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2990 * When built with the :SB-FUTEX feature, threaded builds now take
2991 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2992 for faster/more reliable mutex and condition variable support.
2993 * Incompatible change (but one you probably shouldn't have been using
2994 anyway): the interface and code for arbitrating between multiple
2995 threads in the same user session has been redesigned.
2996 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2997 error when called without an explicit environment argument.
2998 (thanks to Nikodemus Siivola)
2999 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3000 confused about their position. (thanks to Adam Warner and Gerd
3002 * bug fix: Pretty printing backquoted forms with unquotations in the
3003 argument list position of various code constructs such as LAMBDA
3004 now works correctly. (reported by Paul Dietz)
3005 * bug fix: Pretty printing unquotations no longer loses all
3006 stream position information.
3007 * optimization: performance of string output streams is now less
3008 poor for multiple small sequence writes.
3009 * optimization: performance of CSUBTYPEP in the presence of complex
3010 expressions involving CONS and NOT many times has been improved.
3011 (reported by Paul Dietz)
3012 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3014 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3015 streams for the REPL, for the debugger, and so on. (thanks to
3017 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3018 * fixed some bugs revealed by Paul Dietz' test suite:
3019 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3020 is ignored if it is too small, rather than propagating through
3021 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3022 ** extremely complex negations of CONS types were not being
3023 sufficiently canonicalized, leading to inconsistencies in
3025 ** VALUES tranformer lost derived type.
3027 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3028 * fixed a bootstrapping bug: the build process no longer assumes
3029 that the various BOOLE-related constants have the same value in
3030 host and target lisps. (noted by Paul Dietz' test suite on an
3031 SBCL binary built from CLISP)
3032 * The system can now be dynamically linked on the MIPS platform,
3033 which enables dynamic loading of foreign code from Lisp. (thanks
3034 to Ralf Baechle for discussions on the MIPS ABI)
3035 * The system now records debugging information for its own source
3036 files in a filesystem-position-independent manner, relative to
3037 the "SYS" logical host.
3038 * fixed a compiler bug: MV-LET convertion did not check references
3039 to the "max args" entry point. (reported by Brian Downing)
3040 * tweaked disassembly notes to be less confident about proclaiming
3041 some instruction as an LRA. (thanks to Brian Downing)
3042 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3043 now each have their own history, command character, and other
3044 characteristics. (thanks to David Lichteblau)
3045 * fixed some bugs revealed by Paul Dietz' test suite:
3046 ** compiler failure in compiling LOGAND expressions including a
3048 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3049 shift greater than 32.
3050 ** FLUSH-DEST did not mark blocks for type check regeneration.
3051 ** HANDLER-CASE failed to accept declarations in handler clauses
3052 in some circumstances.
3054 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3055 * New code in contrib/sb-introspect (still probably not entirely
3056 stable yet) provides some support for smart Lisp development
3057 environments like SLIME.
3058 * The conditions signalled for errors occurring when loading .fasl
3059 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3060 in a way which should help ASDF recover gracefully.
3061 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3062 stuff has been cleaned up. If you code contrib/ stuff, this might
3063 affect you, and you can look at contrib/README, contrib/STANDARDS,
3064 and/or the 0.8.4.27 diff to check.
3065 * In full calls the compiler now does not generate checks for declared
3066 argument types for all arguments.
3067 * various threading fixes
3068 ** and some experimental patches which didn't make it into
3069 the main tree for this release, but which are shipped in
3070 contrib/experimental-thread.patch as a possible fix for some
3071 failures (deadlock, spinning...) in GC-intensive multithreaded
3073 * fixed PPC build problem (source code incompatibility of different
3074 library versions): added offsetof() hackery which attempts to divine
3075 where glibc maintainers put uc_mcontext today
3076 * fixed bug 282: compiler does not trust type assertions while passing
3077 arguments to a full call.
3078 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3079 &OPTIONAL VALUES type parameter.
3080 * fix bug 214: algorithm for noting rejected templates is now more
3081 similar to that of template seletion. (also reported by rydis on
3083 * fixed bug 141b: printing backquoted information readably and prettily
3084 inserts a space where necessary.
3085 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3086 (CHARACTER 10) are now reported as errors, rather than propagated
3087 as unknown types. (reported by piso on #lisp)
3088 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3089 with values NIL and :ERROR. (thanks to Milan Zamazal)
3090 * fixed bug 191c: CLOS now does proper keyword argument checking as
3091 described in CLHS 7.6.5 and 7.6.5.1.
3092 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3093 longer raise an error; further, using a list as a for-as-arithmetic
3094 counter now raises a meaningful error.
3095 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3096 now understood by sequence creation functions such as MAKE-SEQUENCE
3098 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3099 a STRING-INPUT-STREAM.
3100 * compiler enhancement: SIGNUM is now better able to derive the type
3102 * type declarations inside WITH-SLOTS are checked. (reported by
3104 * fixed some bugs revealed by Paul Dietz' test suite:
3105 ** incorrect optimization of TRUNCATE for a positive first
3106 argument and negative second.
3107 ** compiler failure in let-convertion during flushing dead code.
3108 ** compiler failure while deriving type of TRUNCATE on an
3109 interval, containing 0.
3110 ** ASH of a negative bignum by a negative bignum count now returns
3112 ** intersection of CONS types now canonicalizes properly, fixing
3113 inconsistencies in SUBTYPEP.
3115 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3116 * incompatible change: The --disable-debugger command line
3117 option now clobbers the debugger at a more fundamental
3118 level, by redefining #'INVOKE-DEBUGGER instead of by
3119 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3120 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3121 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3122 enter the debugger REPL and then suffer recursive errors
3123 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3124 while under the new system, BREAK in --disable-debugger mode
3125 terminates the system just as an unhandled error would.
3126 * fixed compiler performance when processing loops with a step >1;
3127 * bug fix: DOCUMENTATION now retrieves generic function
3128 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3129 support has been systematized, and now supports the methods
3130 specified by ANSI, along with a default method and a method for
3131 slot documentation. (reported by Nathan Froyd)
3132 * bug fix: effective methods associated with a generic function are
3133 no longer cached over a change of that generic function's method
3134 combination. (reported by Andreas Fuchs)
3135 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3136 names a non-existent directory. (thanks to Andreas Fuchs)
3137 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3138 the PPC platform, lead to stack corruption; this has been fixed.
3139 (reported by Rainer Joswig)
3140 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3141 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3142 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3143 arithmetic in general, is now much more reliable on the PPC
3145 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3146 platform now returns the right answer.
3147 * optimization: restored some effective method precomputation in
3148 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3149 precomputation is now tunable.
3150 * optimization: compiler-internal data structure use has been
3151 reviewed, and changes have been made that should improve the
3152 performance of the compiler by about 20%.
3153 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3154 simple-base-strings and simple-bit-vectors is improved.
3155 * optimization: the optimization of 32-bit logical and arithmetic
3156 functions introduced in version 0.8.3 on the x86 has been
3157 implemented on the mips, ppc and sparc platforms; an
3158 implementation of the same facility, but for 64-bit arithmetic,
3159 has been added for the alpha.
3160 * microoptimization: the compiler is better able to make use of the
3161 x86 LEA instruction for multiplication by constants.
3162 * bug fix: in some situations compiler did not report usage of
3163 generic arithmetic in (SPEED 3) policy.
3164 * bug 145b fix: compiler used wrong type specifier while converting
3165 MEMBER-types to numeric.
3166 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3168 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3169 index argument now works properly on the Alpha platform.
3170 * bug fix: floating point exception treatment on the Alpha platform
3172 * bug fix: FILE-POSITION works much better on string input and
3173 output streams. (thanks to Nikodemus Siivola)
3174 * bug fix: many threading/garbage collection symptoms sorted.
3175 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3176 might be pseudo-atomic.
3177 * internal change: Stopping for GC is now done with signals not
3178 ptrace. GC is now done in whichever thread wanted it, instead of
3180 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3182 * bug fix: result form in DO is not contained in the implicit
3184 * incompatible change: ICR structure is changed; the value part of
3185 CONTINUATION is now called LVAR; corresponding functions are
3186 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3187 * added type deriver for ISQRT (thanks to Robert E. Brown).
3188 * bug fix: better support for loading from the command line when an
3189 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3191 * fixed some bugs revealed by Paul Dietz' test suite:
3192 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3193 ** ROUND and FROUND now give the right answer when given very
3194 small float arguments.
3195 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3197 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3198 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3199 ** LCM should return a non-negative integer.
3200 ** PARSE-INTEGER returned the index of a terminator instead of the
3201 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3202 ** PARSE-INTEGER returned an incorrect index being applied to a
3204 ** LCM with two arguments of 0 returns 0 rather than signalling
3206 ** unsigned addition of a 32-bit constant with the high bit set no
3207 longer causes an internal compiler error on the x86.
3208 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3209 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3210 with negative last argument.
3211 ** byte specifiers with zero size and position no longer cause
3212 an error during type derivation.
3213 ** bignum multiplication on the Alpha platform now returns the
3215 * porting: The system now builds on SuSE AMD64, although it still
3216 generates a 32-bit binary.
3217 * .fasl file incompatibility: The fasl file version number has
3218 been incremented (because of the changes to internal compiler
3219 data structures referred to above).
3221 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3222 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3223 more accurately, on the Darwin kernel running on PowerPC hardware.
3224 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3225 * Compiler code deletion notes now signal a condition of type
3226 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3227 an associated MUFFLE-WARNING restart.
3228 * The compiler now performs limited argument count validation of
3229 constant format strings in FORMAT, and where appropriate in ERROR,
3230 CERROR and WARN. (thanks to Gerd Moellmann)
3231 * New ASDF-INSTALL contrib can be used for automatic download and
3232 installation of third-party Lisp code from CCLAN or other sites
3234 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3235 which forces another thread to execute a function supplied by the
3237 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3238 now accept and act upon their :ELEMENT-TYPE keyword argument.
3239 (reported by Martin Atzmueller, Edi Weitz)
3240 * bug fix: FILE-POSITION now accepts position designators up to
3241 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3242 is the greater. (thanks to Patrik Nordebo)
3243 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3244 Kalle Olavi Niemitalo)
3245 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3246 printable. (reported by Eric Marsden)
3247 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3248 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3249 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3250 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3251 (thanks to Stig Sandoe)
3252 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3253 UNREAD-CHAR now correctly includes the unread character in the
3254 target sequence. (thanks to Gerd Moellmann)
3255 * bug fix in threaded builds: the system can now be suspended and
3256 resumed by shell job control with minimal disruption.
3257 * bug fixes in times and timezones >2038AD
3258 * better handling of "where is GNU make?" problem in build scripts
3259 (thanks to Nikodemus Siivola)
3260 * new optimization: inside a named function any reference to a
3261 function with the same name is considered to be a self-reference;
3262 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3263 optimization quality.
3264 * new optimization on x86: logical functions and + now have
3265 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3266 used when the result is truncated to 32 bits.
3267 * VALUES declaration is partially enabled.
3268 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3269 * fixed some bugs revealed by Paul Dietz' test suite:
3270 ** The system now obeys the constraint imposed by
3271 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3272 types form a lattice under type intersection.
3273 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3274 ** ASSOC now ignores NIL elements in an alist.
3275 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3276 and (1+ MOST-POSITIVE-FIXNUM) answers.
3277 ** The addition of a method with invalid qualifiers to a generic
3278 function does not cause an error to be signalled immediately;
3279 a warning is signalled, and the error is generated only on
3280 calling the generic function.
3281 * changed .fasl file version number, in part to add type codes for
3282 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3283 obscure ANSI requirements
3285 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3286 * fixed bug 148: failure to inline-expand a local function left
3287 garbage, confusing the compiler.
3288 * fixed bugs 3cd: structure slot readers perform type check if the
3289 slot can have an invalid value (i.e. it is either not initialized
3290 or can be written with a less specific slot writer).
3291 * bug fix: the compiler now traps array references to elements off
3292 the end of an array; previously, the bounds checking in some
3293 circumstances could go off-by-one.
3294 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3296 * type declarations for array element types now obey the description
3297 on the CLHS page "Declaration TYPE", as per discussions on
3298 sbcl-help around 2003-05-08. This means that a declaration
3299 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3300 declaration, all references to BAR will be asserted or assumed
3301 (with THE, so dependent on compiler policy) to involve objects of
3302 type FOO. Note that no such declaration is implied in
3303 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3304 * declared types of functions from the "Conditions"
3305 chapter. (reported by Paul Dietz)
3306 * bug fix: CERROR accepts a function as its first argument.
3307 * bug fix: NTH an NTHCDR accept a bignum as index
3308 arguments. (reported by Adam Warner)
3309 * optimization: character compare routines now optimize comparing
3310 against a constant character. (reported by Gilbert Baumann)
3311 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3312 argument now works properly on the MIPS platform.
3313 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3314 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3315 declared to have a functional type, does not cause an error
3317 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3318 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3319 * fixed bug: if last continuation of a deleted block has a
3320 destination, this destination should be deleted too. (reported by
3322 * fixed a bug in the bootstrap process: the host compiler's values
3323 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3324 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3325 test case from Patrik Nordebo)
3326 * improved the ability of the disassembler on the PPC platform to
3327 provide helpful disassembly notes.
3328 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3329 the class in more cases than previously.
3330 * bug fix: FILE-POSITION now understands :START and :END for
3331 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3332 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3333 8) data. (thanks to David Lichteblau)
3334 * bug fix: it is possible to add a method to a generic function
3335 without lambda list.
3336 * bug fix: reader failed to signal END-OF-FILE inside an
3337 object representation. (reported by Nikodemus Siivola)
3338 * fixed some bugs revealed by Paul Dietz' test suite:
3339 ** LAST and [N]BUTLAST should accept a bignum.
3340 ** condition slot accessors are methods.
3341 ** (VECTOR NIL) is a subtype of STRING.
3343 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3344 * minor incompatible change: some nonsensical specialized lambda
3345 lists (used in DEFMETHOD) which were previously ignored now signal
3347 * minor incompatible change: the system is now aware of the types of
3348 variables in the COMMON-LISP package, and will signal errors for
3349 most violations of these type constraints (where previously they
3350 were silently accepted).
3351 * minor incompatible change: COMPILE-FILE now uses the freedom
3352 afforded (ANSI 3.2.2.3) to use derived function types for
3353 functions defined in the same file. This also permits the system
3354 to warn on static type mismatches and function
3355 redefinition. (Currently it does not work with high DEBUG level.)
3356 * minor incompatible change: VALUES declaration is disabled.
3357 * When issuing notes, the compiler now signals a condition of type
3358 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3359 restart for use in user handlers. It is expected that the
3360 COMPILER-NOTE condition will eventually become a condition
3361 supertype to a hierarchy of note types, which will then be
3362 handleable in a similar fashion. However, at the moment, no such
3363 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3364 but it's an implementation detail, not a classification for the
3366 * Changes in type checking closed the following bugs:
3367 ** type checking of unused values (192b, 194d, 203);
3368 ** template selection based on unsafe type assertions (192c, 236);
3369 ** type checking in branches (194bc).
3370 * A short form of VALUES type specifier has ANSI meaning (it has
3371 increased the number of situations when SBCL cannot perform type
3373 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3374 keywords or constants is permissible.
3375 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3376 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3377 classes. (thanks to Antonio Martinez)
3378 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3379 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3380 argument to a pretty-print stream. Instead, it leaves any such
3381 operations to DESCRIBE-OBJECT methods.
3382 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3384 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3385 lambda lists. (thanks to David Lichteblau)
3386 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3387 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3388 (thanks to Gerd Moellmann)
3389 * fixed bug 246: increased compilation speed of long
3390 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3392 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3394 * DEFCONSTANT now throws a condition of type
3395 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3396 constant to a non-EQL value; CONTINUE and ABORT restarts
3397 respectively change and preserve the value.
3398 * fixed bug 63: The code walker, part of the implementation of CLOS,
3399 is now better at handling symbol macros.
3400 * bug fix: There is no longer an internal implementation type named
3401 CL:LENGTH. (reported by Raymond Toy)
3402 * bug fix: In macro-like defining macros/special operators the
3403 implicit block does not enclose the lambda list.
3404 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3405 enclosed in parentheses) are not suitable as type specifiers, and
3406 their use properly signals an error now.
3407 * bug fix: An argument count mismatch for a type specifier in code
3408 being compiled no longer causes an unhandled error at compile
3409 time, but signals a compile-time warning.
3410 * fixed simple vector readable printing
3411 * bug fix: DESCRIBE takes more care over whether the class
3412 precedence list slot of a class is bound before accessing it.
3413 (reported by Markus Krummenacker)
3414 * bug fix: FORMATTER can successfully compile pretty-printer format
3415 strings which use variants of the ~* directive inside.
3416 * bug fix: SEARCH now applies its TEST predicate to the elements of
3417 the arguments in the correct order. (thanks to Wolfhard Buss)
3418 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3419 in type inference. (thanks to Robert E. Brown)
3420 * bug fix: Reading in symbols with an explicit package name of ""
3421 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3422 * fixed some bugs revealed by Paul Dietz' test suite:
3423 ** NIL is now allowed as a structure slot name.
3424 ** Arbitrary numbers, not just REALs, are allowed in certain
3425 circumstances in LOOP for-as-arithmetic clauses.
3426 ** Multiple class redefinitions before slot access no longer
3427 causes a type error.
3428 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3429 association between the name and a class.
3430 ** Generic functions with non-standard method-combination and over
3431 five methods all of which return constants no longer return NIL
3432 after the first few invocations. (thanks to Gerd Moellmann)
3433 ** CALL-NEXT-METHOD with no arguments now passes the original
3434 values of the arguments, even in the presence of assignment.
3435 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3437 ** DISASSEMBLE works with closures and funcallable instances.
3438 ** ADD-METHOD now returns the generic function, not the new method.
3439 ** FIND-METHOD signals an error if the lengths of the specializers
3440 is incompatible with the generic function, even if the ERRORP
3442 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3443 which its argument is a member.
3444 ** DEFCLASS only redefines the class named by its class-name
3445 argument if that name is the proper name of the class;
3446 otherwise, it creates a new class.
3447 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3448 of the UNBOUND-SLOT condition to the name of the slot.
3449 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3450 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3451 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3452 SLOT-MAKUNBOUND in the specified fashion.
3454 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3455 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3456 cross-compilation host. As a consequence, we can now bootstrap our
3457 way up to SBCL starting with a bare gcc toolchain and human-readable
3458 source code (first the source to CLISP, then the source to SBCL).
3459 * A contributed module containing a partial implementation of the
3460 simple-streams interface has been included. (thanks to Rudi
3462 * A contributed module implementing the RFC1321 Message Digest
3463 Algorithm, known as MD5, has been included.
3464 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3465 no longer has any effect, as the code controlled by this feature
3466 has been deleted. (As far as we know, no-one has ever built using
3467 this feature, and its semantics were confused in any case).
3468 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3469 work on conditions (as required by the ANSI specification),
3470 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3471 expected behaviour on conditions. Users should note, however,
3472 that such behaviour is not required by the ANSI specification,
3473 and so use of this behaviour may render their code unportable.
3474 * fixed some bugs revealed by Paul Dietz' test suite:
3475 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3477 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3478 ** SXHASH on condition objects no longer returns NIL.
3479 ** :ALLOCATION :CLASS slots are better treated; their values are
3480 updated on class redefinition, and initforms inherited from
3481 superclasses are applied.
3482 ** REMOVE-METHOD returns its generic function argument even when
3483 no method was removed.
3484 ** SHARED-INITIALIZE now initializes the values of the requested
3485 slots, including those with :ALLOCATION :CLASS.
3486 ** ALLOCATE-INSTANCE now works on structure classes defined via
3487 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3489 ** SLOT-EXISTS-P now works on conditions, as well as structures
3491 ** MAKE-LOAD-FORM now has the required methods on
3492 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3493 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3494 keyword, and now implements the SLOT-NAMES argument.
3495 ** methods with &OPTIONAL arguments no longer allow too many
3496 arguments to be passed in the call without error.
3497 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3498 option is consistent with the required arguments of the generic
3499 function lambda list.
3500 * bug fix: REQUIRE accepts a string designator. (Thanks to
3502 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3503 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3504 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3505 * bug fix: The compiler now checks for duplicated variables in macro
3507 * bug fix: SETQ on globals returns the correct value.
3508 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3509 not a COMPILER-ERROR (followed by some other strange error on
3510 choosing the CONTINUE restart).
3511 * bug fix: make.sh and friends are now more consistent in the way that
3512 they look for GNU "make".
3514 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3515 * experimental native threads support (on x86 Linux >=2.4 only).
3516 This is not compiled in by default: you need to add :SB-THREAD to
3517 the target features. See the "Beyond ANSI" chapter of the manual
3519 * fix for longstanding nonANSIism: The old distinction between
3520 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3521 The return value from CL:FIND-CLASS is now a CLOS class, and
3522 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3523 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3524 * An interface to the MetaObject Protocol, as described in Kiczales,
3525 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3526 MIT Press, 1991, is available from the SB-MOP package.
3527 * incompatible change: the SB-PCL package should now be considered
3528 a private implementation detail, and no longer a semi-private MOP
3530 * minor incompatible change: due to rearrangement for threads, the
3531 control stack and binding stack are now allocated at arbitrary
3532 addresses instead of being hardcoded per-port. Users affected by
3533 this probably have to be doing advanced things with shared
3534 libraries, and will know who they are.
3535 * minor incompatible change: Previously, all --eval forms used were
3536 processed with READ before any of them were processed with EVAL.
3537 Now each --eval form is processed with both READ and EVAL before
3538 the next --eval form is processed. (Thus package operations like
3539 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3540 work as the user might reasonably expect.)
3541 * minor incompatible change: *STANDARD-INPUT* is now only an
3542 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3544 * minor incompatible change: Y-OR-N-P is now character-oriented,
3545 not line oriented. Also, YES-OR-NO-P now works without errors.
3546 (thanks to Antonio Martinez)
3547 * sb-aclrepl module improvements: an integrated inspector, added
3548 repl features, and a bug fix to :trace command.
3549 * Known functions, which cannot be open coded by the backend, are
3550 considered to be able to check types of their arguments. (fixing
3551 a bug report by Nathan J. Froyd)
3552 * fixed a bug in computing method discriminating functions: It is
3553 now possible to define methods specialized on classes which have
3554 forward-referenced superclasses. (thanks to Gerd Moellmann)
3555 * fixed evaluation order in optional entries (reported by Gilbert
3557 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3558 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3559 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3560 required-by-AMOP NAME argument, as well as CLASS and
3561 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3562 * fixed bug 20: DEFMETHOD can define methods using names that are
3563 not the proper names of classes to designate class specializers.
3564 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3565 Unix file descriptors, instead of blowing up. (thanks to Antonio
3567 * Garbage collection refactoring: user-visible change is that a
3568 call to the GC function during WITHOUT-GCING will not do garbage
3569 collection until the end of the WITHOUT-GCING. If you were doing
3570 this you were probably losing anyway.
3571 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3572 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3573 TYPEP the latter but not the former.
3574 * The compiler issues a full WARNING for calls to undefined functions
3575 with names from the CL package.
3576 * MAP-INTO for a vector destination is open coded. (reported by
3577 Brian Downing on c.l.l)
3578 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3579 documentation string.
3580 * fixed some bugs revealed by Paul Dietz' test suite:
3581 ** COPY-ALIST now signals an error if its argument is a dotted
3583 ** Condition slots are now accessed more correctly in the presence
3584 of multiple initargs for a given slot.
3585 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3586 exclude restarts of the same name associated with a different
3588 ** DEFCLASS of forward-referenced classes with another
3589 forward-referenced class in the superclasses list no longer
3591 ** Condition slots are now initialized once each, not multiple
3592 times. (thanks to Gerd Moellmann)
3593 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3595 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3596 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3597 arguments contain duplicated elements.
3598 ** RESTART-CASE understands local macros.
3599 ** RESTART-CASE associates exactly its own restarts with a condition.
3600 ** ENDP in safe mode checks its argument to be of type LIST.
3601 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3602 in question is unbound.
3603 ** Optimized MAKE-INSTANCE functions no longer cause internal
3604 assertion failures in the presence of duplicate initargs.
3605 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3606 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3607 propagated even in the ctor optimized implementation of
3609 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3611 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3612 * a better implementation of SXHASH on (simple) bit vectors,
3613 measured both in execution speed and in distribution of results
3614 over the positive fixnums, has been installed. Likewise, a better
3615 implementation of EQUAL for simple bit vectors is now available.
3616 * fixed CEILING optimization for a divisor of form 2^k.
3617 * fixed bug 240 (emitting extra style warnings "using the lexical
3618 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3619 by Antonio Martinez)
3620 * fixed SXHASH, giving different results for NIL depending on type
3621 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3622 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3623 variable. (found by Rolf Wester)
3624 * SBCL does not ignore type declarations for special
3625 variables. (reported by rif on c.l.l 2003-03-05)
3626 * some bug fixes in contrib/sb-aclrepl/
3627 * fixed some bugs revealed by Paul Dietz' test suite:
3628 ** a bug in the CONS type specifier, whereby the CAR and CDR
3629 types got intertwined, has been fixed;
3630 ** the type system is now able to reason about the interaction
3631 between INTEGER and RATIO types more completely;
3632 ** APPEND, [N]REVERSE and NRECONC check that those their
3633 arguments, which must be proper lists, are really so;
3634 ** An array specialized to be unable to hold elements has been
3635 implemented, as required -- yes, really -- by ANSI;
3636 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3637 on malformed property lists;
3639 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3640 * incompatible packaging change: in line with Unix convention,
3641 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3642 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3643 * REQUIRE and PROVIDE are now optionally capable of doing something
3644 useful. See the documentation string for REQUIRE.
3645 * infrastructure for a managed SBCL contrib system: contributed
3646 modules in this release include:
3647 ** the ASDF system definition facility;
3648 ** an interface to the BSD Sockets API;
3649 ** an ACL-like convenience interface to the repl;
3650 (thanks to Kevin Rosenberg)
3651 ** an implementation of ROTATE-BYTE, with efficient implementation
3653 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3654 gives a closer approximation to the right answer than previously.
3655 (thanks to Raymond Toy)
3656 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3657 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3658 optional environment arguments, as required by ANSI.
3659 * fixed bugs in other functions taking environment objects, allowing
3660 calls with an explicit NIL environment argument to be compiled
3662 * fixed bug 228: primary return values from
3663 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3664 COMPILE or FUNCTION.
3665 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3666 :TYPE will no longer signal errors on innocuous objects.
3667 * fixed bug 231b: SETQ is better at respecting type declarations in
3668 the lexical environment.
3669 * fixed a bug in DEFCLASS: classes named by symbols with no or
3670 unprintable packages can now be defined.
3671 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3672 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3673 * fixed compiler failure related to checking types of functions.
3674 (reported by Robert E. Brown)
3675 * the compiler is now much more consistent in its error-checking
3676 treatment of bounding index arguments to sequence functions: in
3677 (SAFETY 3) code, errors will be signalled in almost all cases if
3678 invalid sequence bounding indices are passed to functions defined
3679 by ANSI to operate on sequences.
3680 * fixed a bug in the build procedure: documentation of SBCL-specific
3681 packages is now preserved and available in the final Lisp image.
3682 * lifted FDEFINITION lookup out of loops in the implementation of
3683 many list operations. (thanks to Robert E. Brown)
3684 * fixed a bug in the reader: the #n# reader macro now works for
3685 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3686 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3687 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3688 E. Brown and Tony Martinez respectively)
3689 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3690 SLOT-BOUNDP: in particular, it is now able to optimize them much
3691 better, and is now not vulnerable to having packages renamed.
3692 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3693 always called when a slot is not present in an instance. (thanks
3695 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3696 longer signal an error on unreading a character following EOF on
3697 the previous constituent stream. (thanks to Tony Martinez)
3698 * fixed some bugs revealed by Paul Dietz' test suite:
3699 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3700 not just nonnegative fixnums;
3701 ** the logical bit-array operators such as BIT-AND now accept an
3702 explicit NIL for their "opt-arg" argument (to indicate a
3703 freshly-consed result bit-array);
3704 ** ELT now signals an error on an invalid sequence index in safe
3706 ** the type system is now cleverer about negations of numeric
3707 types, and consequently understands the BIGNUM and RATIO types
3709 ** the type system is now cleverer about the interaction between
3710 INTEGER and RATIO types: while bugs still remain, many more
3711 cases are accurately computed;
3712 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3713 if it is in the last clause;
3714 ** CONSTANTLY now correctly returns a side-effect-free function in
3716 ** DECLARE is no longer treated as a special-operator; in
3717 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3718 * incremented fasl file version number due to the change in the
3719 DEFSTRUCT-SLOT-DESCRIPTION structure.
3721 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3722 * minor incompatible change: code processed by the "interpreter" or
3723 EVAL now has a compilation optimization policy of (DEBUG 2)
3724 (changed from (DEBUG 1)) to improve debuggability of interactive
3725 development, and to allow the use of the debug RETURN command in
3727 * an experimental implementation of the RETURN command for the
3728 debugger has been included. (thanks to Frederik Kuivinen)
3729 * fixed bug 62: constraints were not propagated into a loop.
3730 * fixed bug in embedded calls of SORT (reported and investigated by
3732 * fixed some bugs revealed by Paul Dietz' test suite:
3733 ** printing and reading of arrays with some dimensions having
3734 length 0 (thanks to Gerd Moellmann);
3735 ** BOA constructor with &AUX argument without a default value does
3736 not cause a type error;
3737 ** CONSTANTP now returns true for all self-evaluating objects.
3739 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3740 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3741 accessors that are related by inheritance, as specified in the
3742 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3743 Valtteri Vuorikoski)
3744 * The compiler is now able to inline functions that were defined in
3745 a complex lexical environment (e.g. inside a MACROLET).
3746 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3748 * Support for the upcoming FreeBSD-5.0 release has been included.
3749 (thanks to Dag-Erling Smorgrav)
3750 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3751 effect when it is not in a toplevel context.
3752 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3753 stand a better chance of being correct. (thanks to Gerd
3755 * fixed bug in COERCE, which now signals an error on coercing a
3756 rational to a bounded real type which excludes the expected
3758 * The compiler is now able to derive types more accurately from the
3759 COERCE and COMPILE functions.
3760 * fixed bug 223: functional binding is considered to be constant
3761 only for symbols in the CL package.
3762 * fixed bug 231: SETQ did not check the type of a variable being set
3763 (reported by Robert E. Brown)
3764 * A new optimization for MAKE-INSTANCE has been included, fixing
3765 various bugs (including relating to :ALLOCATION :CLASS slots and
3766 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3768 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3769 ** As required by ANSI, LOOP now disallows anonymous collection
3770 clauses such as COLLECT I in conjunction with aggregate boolean
3771 clauses such as THEREIS (= I 1);
3772 ** LOOP now signals an error when any variable is reused in the
3773 same loop (including the potentially useful construct analogous
3774 to WITH A = 1 WITH A = (1+ A);
3775 ** IT is only a special loop symbol within the first clause of a
3776 conditional loop clause;
3777 ** LOOP with a typed iteration variable over a hashtable now
3778 signals a type error iff it should.
3779 * fixed some other bugs revealed by Paul Dietz' test suite:
3780 ** FILE-STREAM now names the class previously known as FD-STREAM;
3781 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3782 argument) no longer signals an error;
3783 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3784 of the slot symbol, rather than using the current package
3785 ((:CONC-NAME "") continues to intern the slot's name in the
3787 * incremented fasl file version number, because of the incompatible
3788 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3789 of the new implementation of DEFINE-COMPILER-MACRO.
3791 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3792 * Support for building SBCL for MIPS platforms running in
3793 little-endian mode has now been checked in, and basic
3794 functionality on said platforms verified.
3795 * minor incompatible change: PCL now records the pathname of a file
3796 in which methods and the like are defined, rather than its
3798 * minor incompatible change: TRUENAME now considers the truename of
3799 a file naming a directory to be the pathname with :DIRECTORY
3800 component indicating that directory.
3801 * minor incompatible change: a NAMED clause in the extended form of
3802 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3803 reason for the previous behaviour is unclear.
3804 * more systematization and improvement of CLOS and MOP conformance
3805 in PCL (thanks to Gerd Moellman and Pierre Mai):
3806 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3808 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3809 primary methods with no specializers;
3810 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3812 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3813 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3814 FORWARD-REFERENCED-CLASSes; error reporting on
3815 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3817 ** SXHASH on CLOS instances now uses a slot internal to the
3818 instance to return different numbers on distinct instances,
3819 while preserving the same return value through invocations of
3821 ** DEFMETHOD signals errors when methods with longer incongruent
3822 lambda lists are added to generic functions;
3823 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3824 CLASS, as specified in AMOP;
3825 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3826 on the order returned by the primary method for classes of
3827 class STANDARD-CLASS;
3828 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3829 * fixed some bugs shown by Paul Dietz' test suite:
3830 ** DOLIST puts its body in TAGBODY;
3831 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3833 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3834 value producing form;
3835 ** if more variables are given to PROGV than values, extra
3836 variables are bound and made to have no value;
3837 ** NSUBSTITUTE on list arguments gets the right answer with
3839 ** ELT signals an error of type TYPE-ERROR when the index argument
3840 is not a valid sequence index;
3841 ** LOOP signals (at macroexpansion time) an error of type
3842 PROGRAM-ERROR when duplicate variable names are found;
3843 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3844 ** FUNCALL of special-operators now cause an error of type
3846 ** PSETQ now works as required in the presence of side-effecting
3847 symbol-macro places;
3848 ** NCONC accepts any object as its last argument;
3849 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3851 ** loop-for-as-package does not require a package to be explicitely
3853 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3855 * fixed bug 166: compiler preserves "there is a way to go"
3856 invariant when deleting code.
3857 * fixed bug 172: macro lambda lists with required arguments after
3858 &REST arguments now cause an error to be signalled. (thanks to
3860 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3861 bug. (thanks to Matthew Danish)
3862 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3864 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3865 arguments are lexically rebound. (thanks to Gerd Moellmann and
3867 * fixed bug 194: error messages are now more informative when there
3868 is no primary method applicable in a call to a generic
3869 function. (thanks to Gerd Moellmann)
3870 * fixed bug in command line argument checking (thanks to Julian
3872 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3873 (thanks to Matthew Danish)
3874 * incremented fasl file version number, because of the
3875 SXHASH-related changes in the layout of CLOS data structures
3877 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3878 * minor incompatible change: The runtime (the Unix executable named
3879 "sbcl") is now much pickier about the .core files it will load.
3880 Essentially it now requires .core files to descend from the same
3881 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3882 as the runtime does. (The intent is to prevent the crashes which
3883 can occur, and which can even be reported as mysterious failures,
3884 when people patch the sources or change the build parameters
3885 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3886 sbcl and .core files.)
3887 * fixed bug: VALUES-LIST is no longer optimized away.
3888 * fixed bug 142: The FFI conversion of C string values to Lisp
3889 string values no longer conses excessively. (thanks to Nathan
3890 Froyd porting Raymond Toy's fix to CMU CL)
3891 * began to systematize and improve MOP conformance in PCL (thanks to
3892 Nathan Froyd, Gerd Moellman and Pierre Mai):
3893 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3895 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3896 ** FINALIZE-INHERITANCE is now called on class finalization;
3897 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3898 argument precedence order.
3899 * fixed bug 202: The compiler no longer fails on functions whose
3900 derived types contradict their declared type.
3901 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3902 so it can be non-toplevel.
3903 * The fasl file version number has changed (because of the new
3904 implementation of DEFMACRO).
3905 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3906 safe code, that any length requirement by their type-specifier
3907 argument is valid. The exceptions to this are described in bug
3909 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3910 functions now check the types of their inputs as required by ANSI.
3911 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3912 introduced symbol is DECLAREd to be SPECIAL.
3913 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3914 * fixed bug: :COUNT argument to sequence functions may be negative
3915 * fixed bug: body of DO-SYMBOLS may contain declarations
3916 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3917 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3918 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3919 symbol macro only once
3920 * fixed printing of call frame when argument list is unavailable
3921 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3922 * compiler no longer signals WARNING on unknown keyword
3925 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3926 * A beta-quality port to the mips architecture running Linux,
3927 based on the old CMUCL backend, has been made. It has been tested
3928 on a big-endian kernel, and works sufficiently well to be able to
3929 rebuild itself; it has not been tested in little-endian mode.
3930 * fixed an inconsistency between gencgc.c and purify.c which made
3931 dumping/loading .core files unreliable
3932 * fixed bug 120a: The compiler now deals correctly with IFs where
3933 the consequent is the same as the alternative, instead of
3934 misderiving the return type. (thanks to Alexey Dejneka)
3935 * fixed bug 113: Logical pathnames are now dumpable (the logical
3936 host is resolved at load-time, throwing an error if it is not
3938 * fixed bug 174: FORMAT's error message is slightly clearer when a
3939 non-printing character is used in a format directive.
3940 * fixed several bugs in compiler checking of type declarations, i.e.
3941 violations of the Python "declarations are assertions" principle
3942 (thanks to Alexey Dejneka)
3943 * fixed several bugs in PCL's error checking (thanks to Gerd
3945 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3947 * fixed bug in compilation of functions as first class values
3948 (thanks to Antonio Martinez-Shotton)
3949 * The compiler's handling TYPE-ERRORs which it can prove will
3950 inevitably happen at runtime has been cleaned up and corrected
3951 in several ways. (thanks to Alexey Dejneka)
3952 * improved argument type checking for various basic arithmetic
3953 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3954 lavished on them in the past that they can be compiled in many
3955 ways in different special cases
3956 * fixed bug 181: compiler checks validity of user supplied type
3958 * cleaned up code flushing in optimization: Function calls which
3959 should signal errors for safety purposes (e.g. which ANSI says
3960 should signal errors when their arguments are of incorrect type)
3961 are no longer optimized away.
3962 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3963 * incremented fasl file version number, because changes in the
3964 implementation of sequence functions like COERCE caused
3965 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3966 in old inline expansions) to become undefined. (Actually these
3967 changes were later undone, so we might very well be binary
3968 compatible with 0.7.7 after all, but leaving the version number
3969 incremented seemed like the simplest and most conservative
3972 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3973 * An alpha-quality port to the parisc architecture running Linux,
3974 based on the old CMUCL backend, has been made. This, even more so
3975 than the other backends, should be considered still a work in
3976 progress; known problems include that the Linux kernel in 64-bit
3977 mode does not propagate the correct sigcontext structure to
3978 userspace, and consequently SBCL on a parisc64 kernel will not
3980 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3981 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3982 suppressed.) Also now that the compiler is looking at declarations
3983 in the environment, it checks optimization declarations as well,
3984 and suppresses inlining when (> DEBUG SPEED).
3985 * More fixes have been made to treatment of floating point exception
3986 treatment and other Unix signals. In particular, floating point
3987 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3988 * The detection and handling of control stack exhaustion (infinite
3989 or very deeply nested recursion) has changed. Stack exhaustion
3990 detection is now done by write-protecting pages at the OS level
3991 and applies at all optimization settings; when found, a
3992 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3993 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3994 be caught using IGNORE-ERRORS.
3995 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3996 correctly when transforming recursive LABELS functions to LETs.
3997 (thanks to Alexey Dejneka)
3998 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3999 that are names of constants or global variables.
4000 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4001 alien routines with docstrings.
4002 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4003 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4005 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4006 (thanks to Eric Marsden)
4007 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4008 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4009 * Bug fix: The SPARC backend can now compile functions involving
4010 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4011 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4012 to a functions expecting a PATHNAME-DESIGNATOR.
4013 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4014 lambda lists. (thanks to Alexey Dejneka)
4015 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4016 functions so that EXPORTing the name of the class doesn't cause
4017 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4018 to Antonio Martinez for reporting this)
4019 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4020 constant-folded without failing an assertion. (thanks to Einar
4021 Floystad Dorum for reporting this)
4022 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4023 types are now dealt with more correctly by the compiler.
4024 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4025 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4026 behaviour analogous to RENAME-FILE. This puts its behaviour more
4027 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4029 * The fasl file version number has changed again. (because of the
4030 bug fix involving the names of PCL MAKE-INSTANCE functions)
4032 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4033 * bug fix: Floating point exceptions are treated much more
4034 consistently on the x86/Linux and PPC/Linux platforms.
4035 * Array initialization with :INITIAL-ELEMENT is now much faster for
4036 cases when the compiler cannot open code the array creation, but
4037 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4038 array accesses have also seen a speed increase.
4039 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4040 specified. (This was at the root of some bad interactions between
4041 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4043 * bug fix: Internal error arguments for undefined functions are now
4044 computed correctly on the PPC/Linux platform.
4045 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4046 Raymond Toy's patch for CMU CL)
4047 * Support for the Solaris 9 operating environment has been included
4048 (thanks to Daniel Merritt)
4049 * A very ugly but hopefully complete draft of the missing FFI chapter
4050 of the manual has been created by reformatting the corresponding
4051 CMU CL manual chapter into (currently very ugly and incoherent)
4052 DocBook and bringing it up to date for SBCL behavior. Thus, the
4053 manual is now essentially complete, at least by my extreme
4054 once-and-only-once standards, whereby it's acceptable to refer to
4055 the doc strings of SB-EXT functions as the primary documentation.
4056 * The fasl file version number has changed again, due to cleanup of
4057 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4058 is no longer a static symbol.)
4060 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4061 * SBCL now builds with OpenMCL (version 0.12) as the
4062 cross-compilation host; also, more progress has been made toward
4063 bootstrapping under CLISP.
4064 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4066 * bug 158 fixed: The compiler can now deal with integer loop
4067 increments different from 1; fixing this turned out also to fix
4069 * bug 169 fixed: no more bogus warnings about using lexical bindings
4070 despite the presence of perfectly good SPECIAL declarations (thanks
4071 to David Lichteblau)
4072 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4073 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4074 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4076 * bug 180 fixed: Method combination specifications no longer ignore
4077 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4078 * bug fix: Structure type predicate functions now check their argument
4079 count as they should.
4080 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4081 correctly. (thanks to Pierre Mai)
4082 * minor incompatible change: The --noprogrammer option is deprecated
4083 in favor of the new --disable-debugger option, which is very similar.
4084 (The major difference is that it takes effect at a slightly different
4085 time at startup, causing handling of errors in --sysinit and
4086 --userinit files will be affected differently.) The
4087 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4088 been added to allow this functionality to be controlled from ordinary
4089 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4090 maintainers, who might want to run non-interactive scripts to
4091 build SBCL cores which will later be used interactively.)
4092 * minor incompatible change: The LOAD function no longer, when given
4093 a wild pathname to load, loads all files matching that pathname.
4094 Instead, an error of type FILE-ERROR is signalled.
4096 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4097 * bug 147 fixed: The compiler preserves its block link/count
4098 invariants more correctly now so that it doesn't crash. (thanks
4100 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4102 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4103 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4104 no-value-for-this-character as NIL (as specified by ANSI).
4105 * HOST-NAMESTRING on physical pathnames now returns a string that is
4106 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4107 (thanks to Christophe Rhodes)
4108 * The Alpha port handles icache flushing more correctly. (thanks to
4110 * More progress has been made toward bootstrapping under CLISP. (thanks
4111 to Christophe Rhodes)
4112 * The fasl file format has changed again, because dynamic loading
4113 on OpenBSD (which has non-ELF object files) motivated some cleanups
4114 in the way that foreign symbols are transformed and passed around.
4115 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4116 is no longer treated as whitespace by the reader, but instead as
4117 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4118 |A
\7fB|, instead of A as it used to.
4120 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4121 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4122 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4123 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4124 this as of 0.7.1.45, but was left out of the previous news section
4125 (thanks to Dan Barlow)
4126 * SBCL now runs on the Solaris operating system on SPARC architectures
4127 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4128 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4129 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4130 * SPARC backend cleanups, allowing builds of cores optimized for V8
4131 and V9 SPARCS, and also emission of code targeted to a particular
4132 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4134 * SBCL is closer to bootstrapping under CLISP, thanks to various
4135 fixes by Christophe Rhodes.
4136 * The fasl file format has changed again, to allow the compiler's
4137 INFO database to support symbol macros.
4138 * The user manual (in doc/) is formatted into HTML more nicely.
4139 (thanks to coreythomas)
4140 * The system is smarter about SUBTYPEP relationships, especially
4141 those involving NOT types (including types such as ATOM which are
4142 represented internally using NOT types). Thus SUBTYPEP is less
4143 likely to return (VALUES NIL NIL) in general, and in particular
4144 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4146 * The fasl file format has changed again, because the internal
4147 representation of types now includes a new slot to support the new
4148 SUBTYPEP-of-NOT-types logic.
4149 * (not a change in the main branch of SBCL, but a related prototype
4150 which can hopefully be merged into the main branch of SBCL in the
4151 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4152 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4153 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4154 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4155 dispatch macro character combinations. (thanks to Alexey Dejneka)
4156 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4157 that superficially look like logical namestrings correctly.
4158 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4160 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4161 default supplied-p) for &optional and &key arguments. (thanks to
4164 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4165 * incompatible change: The compiler is now less aggressive about
4166 tail call optimization, doing it only when (> SPACE DEBUG) or
4167 (> SPEED DEBUG). (This is an incompatible change because there are
4168 programs which relied on the old CMU-CL-style behavior to optimize
4169 away their unbounded recursion which will now die of stack overflow.)
4170 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4171 for non-GENCGC systems has been increased to 20M (since that
4172 seems much closer to the likely performance optimum for modern
4173 systems than the old 4M value was)
4174 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4175 and *DEBUG-PRINT-LEVEL*
4176 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4177 of CMU CL's support for SPARC, and various endianness and other
4178 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4179 * new syntactic sugar for the Unix command line: --load foo.bar is now
4180 an alternate notation for --eval '(load "foo.bar")'.
4182 ** The system now detects stack overflow and handles it gracefully,
4183 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4184 optimization settings. (This is a good thing in general, and
4185 its introduction in this version should be particularly timely
4186 for anyone whose code fails because of suppression of tail
4188 ** The system now hunts for the C variable "environ" in a more
4189 devious way, to avoid segfaults when the C library version differs
4190 between compile time and run time. (thanks to Christophe Rhodes)
4191 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4192 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4193 ** The compiler no longer issues bogus style warnings for undefined
4194 classes in the same source file as the DEFCLASSes which defined
4195 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4197 ** fixes in CONDITION class precedence list for undefined function
4198 errors (thanks to Alexei Dejneka)
4199 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4200 correctly. (thanks to Dan Barlow)
4201 ** portability fixes aiming at bootstrapping under CLISP (thanks
4202 to Dave McDonald and Christophe Rhodes)
4203 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4204 ** fixes in type translation and and type inference (thanks to
4206 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4207 ** various fixes in the new ports (thanks to Dan Barlow)
4208 * several changes related to debugging:
4209 ** suppression of tail recursion, as noted above
4210 ** stack overflow detection, as noted above
4211 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4212 is now the default. (For some time encapsulation has been more
4213 reliable than the breakpoint-based :ENCAPSULATE NIL
4214 implementation, at least on X86 systems; and I just noticed that
4215 encapsulation also seems closer to the spirit of the ANSI
4218 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4220 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4221 up properly again. (There was a packaging bug in 0.7.0 which
4222 left their definitions in SB-SYS::LOAD-FOREIGN and
4223 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4224 vital for most things which interface to C-level interfaces,
4225 like extensions working with sockets or databases or
4226 Perl-compatible regexes or whatever, and the need to fix
4227 this bug is the main reason that 0.7.1 was released so
4229 ** DEFGENERIC is now choosier about the methods it redefines, so that
4230 reLOADing a previously-LOADed file containing DEFGENERICs does
4231 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4232 cycle now works as it should. (thanks to Alexey Dejneka)
4233 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4234 fixed by Christophe Rhodes. (He actually submitted this patch
4235 months ago, and I delayed until after 0.7.0.)
4236 ** Bug 111 (internal compiler confusion about runtime checks on
4237 FUNCTION types) was fixed by Alexey Dejneka.
4238 * Some internal cleanups (getting rid of variables which aren't
4239 needed now that the byte interpreter is gone) caused the fasl
4240 file format number to change again.
4242 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4243 * major incompatible change: The default fasl file extension, i.e. the
4244 default extension for files produced by COMPILE-FILE, has changed
4245 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4247 ** There are many changes in the implementation of the compiler.
4248 SBCL is now essentially a compiler-only implementation of ANSI
4249 Common Lisp. EVAL still "interprets" a few special cases, but
4250 almost all the interesting cases are handled by creating
4251 a LAMBDA expression, calling COMPILE on it, then calling
4252 FUNCALL on the result.
4253 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4254 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4255 Since the code is newer, there might still be some new bugs
4256 (though not as many as before Martin Atzmueller's fixes:-). But
4257 the new code is substantially simpler and clearer, and hopefully
4258 any remaining bugs will be simpler, less fundamental, and more
4259 fixable then the bugs in the old code.
4260 ** The revised compiler is still a little unsteady on its feet.
4262 *** The debugging information it produces (particularly the names
4263 of FUNCTION objects) is sometimes much less useful than what
4264 the old compiler produced.
4265 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4266 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4267 within a MACROLET) has been temporarily weakened.
4268 ** There are new compiler optimizations for various functions:
4269 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4270 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4271 *** the math functions TRUNCATE, FLOOR, and CEILING
4272 *** the function-of-all-trades COERCE
4273 Mostly these should be transparent, but there's one
4274 potentially-annoying problem (bug 117): when the compiler
4275 inline-expands a function and does type analysis on the result,
4276 it can create control paths which have type mismatches, and
4277 when it can't prove that those control paths aren't taken,
4278 it will issue WARNINGs about the type mismatches. This is
4279 a particular problem in practice for the new sequence functions.
4280 It's not clear how this should be fixed, and for now, a
4281 workaround is given in the entry for 117 in the BUGS file.
4282 ** (Because of the interaction between the two previous items --
4283 occasional inlining problems and new inline expansions -- some
4284 of the new sequence function optimizations won't really kick in
4285 completely until debugging information, and then inlining, are
4286 straightened out in some future version.)
4287 * minor incompatible changes:
4288 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4289 DIRECTORY no longer implicitly promotes NIL slots of its
4290 pathname argument to :WILD. In particular, when you ask for the
4291 contents of a directory (which you used to be able to do without
4292 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4293 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4294 ** changes in behavior that ANSI explicitly defines to be
4295 implementation dependent:
4296 *** The new compiler-only implementation still conforms with ANSI,
4297 but acts a little different than before. Besides the obvious
4298 changes in performance tradeoffs (that the cost per form passed
4299 to EVAL has gone up, and the cost per form executed by EVAL
4300 has gone down), the behavior of the system changes a little
4301 because there are no longer any interpreted function objects.
4302 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4303 e.g. doing COMPILE on the output of interactive DEFUN is
4305 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4307 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4308 has changed from (:CL) to NIL.
4309 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4310 e.g. #\Newline and #\Tab, don't have names specified in the
4311 ANSI Common Lisp standard, is now based on their ASCII symbolic
4312 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4313 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4314 are no longer used for output.
4315 ** changes in internal implementation constants:
4316 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4317 4 million. (If your application spends a lot of time GCing and
4318 you have a lot of RAM, you might want to experiment with
4319 increasing it even more.)
4320 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4321 However, almost all old code should still continue to work without
4322 immediate update, as SB-C-CALL is now a (deprecated) nickname
4324 ** Old operator names in the style DEF-FOO are now deprecated in
4325 favor of new corresponding names DEFINE-FOO, for consistency with
4326 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4327 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4328 internal symbols, but a few supported extensions like
4329 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4330 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4331 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4332 etc. as you get deeper into recursive calls to the debugger
4333 command loop, instead of the old "5]", "5]]", "5]]]"
4334 sequence. (I was motivated to do this when squabbles between
4335 ILISP and SBCL left me very deeply nested in the debugger. In the
4336 short term, this change will probably provoke more ILISP/SBCL
4337 squabbles, but hopefully it will be an improvement in the long run.)
4338 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4339 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4340 function, since declaiming return types involving aliens is
4341 (1) annoyingly messy to do by hand and (2) vital to efficient
4342 compilation of code which calls such functions.
4343 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4344 longer reexported by the SB-EXT package. They're solely useful
4345 for alien code, so it seems more logical that you should get
4346 them from the SB-ALIEN package, not in SB-EXT.
4347 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4348 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4349 features. Instead, the code that they used to control is always
4350 built into the system.
4351 * many other bug fixes
4352 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4353 advantage of the new EVAL-WHEN stuff and to clean them up in
4354 general, and they are now more ANSI-compliant in a number of
4355 ways. Martin Atzmueller is responsible for a lot of this.
4356 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4358 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4359 *** correct ERROR type for various file operations
4360 *** some fixes for Lisp streams
4361 *** DEFMETHOD syntax checking
4362 *** changing old weird representation of debug information as
4363 strings (which, among their other deficiencies, don't transform
4364 correctly when you rename packages, and don't change their
4365 print representation when you change things like *PACKAGE*
4366 and *PRINT-LENGTH*) to symbols and lists of symbols
4367 He also made several improvements and fixed several bugs in DESCRIBE.
4368 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4370 *** misbehavior of WRITE-STRING/WRITE-LINE
4371 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4372 and several other LOOP problems as well
4373 *** DIRECTORY when similar filenames are present
4374 *** DEFGENERIC with :METHOD options
4375 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4376 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4377 *** argument ordering in FIND with :TEST option
4378 *** mishandled package designator argument in APROPOS-LIST
4379 *** various problems in the backquote readmacro
4380 *** a bug in APROPOS
4381 *** probably some others that I'm not describing very well here,
4382 since the CVS log documents them by reference to sbcl-devel
4383 messages, and the SourceForge archives aren't working well.:-(
4384 ** Dan Barlow improved the Alpha port (and is making progress on the
4385 PPC port, for those of you who think different).
4386 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4387 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4388 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4389 continues to work on the SPARC port (for those of you in a position
4390 to look down upon our little PC-compatible boxes from a great height).
4391 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4392 and uses that copy, rather than the current dynamic value, when
4393 it's trying to decide whether to truncate output. Thus e.g.
4394 (let ((*print-lines* 50))
4395 (pprint-logical-block (stream nil)
4397 (let ((*print-lines* 8))
4398 (print (aref possiblybigthings i) stream)))))
4399 should now truncate the logical block only at 50 lines, instead of
4400 often truncating it at 8 lines, as it did before.
4401 * The doc/cmucl/ directory, containing old CMU CL documentation
4402 from the time of the fork, is no longer part of the base system.
4403 SourceForge has shut down its anonymous FTP service, and with it
4404 my original plan for distributing the old CMU CL documentation
4405 there. For now, if you need these files you can download an old
4406 SBCL source release and extract them from it.
4407 * The fasl file version number changed again, for dozens of reasons,
4408 some of which are apparent above.
4410 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4411 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4412 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4413 patch, so that DISASSEMBLE output is much nicer.
4414 * The code in the SB-PROFILE package now seems reasonably stable.
4415 I still haven't decided what the final interface should look like
4416 (I'd like PROFILE to interact cleanly with TRACE, since both
4417 facilities use function encapsulation) but if you have a need
4418 for profiling now, you can probably use it successfully with
4419 the current CMU-CL-style interface.
4420 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4421 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4422 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4423 link now returns the dangling link itself, and for similar
4424 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4425 link itself. (In these cases the old code signalled an error and
4426 looped endlessly, respectively.) Thus, DIRECTORY now works even
4427 in the presence of dangling and cyclic symbolic links.
4428 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4429 is now a supported extension again, since the consensus on
4430 sbcl-devel was that it can be useful for ordinary development
4431 work, not just for debugging SBCL itself.
4432 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4433 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4434 that currently-defined functions might be redefined later with
4435 different return types.
4436 * Hash tables can be printed readably, as inspired by CMU CL code
4437 of Eric Marsden and SBCL code of Martin Atzmueller.
4438 * better error handling in CLOS method combination, thanks to
4439 Martin Atzmueller porting Pierre Mai's CMU CL patches
4440 * more overflow fixes for >16Mbyte I/O buffers
4441 * A bug in READ has been fixed, so that now a single Ctrl-D
4442 character suffices to cause end-of-file on character streams.
4443 In particular, now you only need one Ctrl-D at the command
4444 line (not two) to exit SBCL.
4445 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4447 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4448 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4449 does the right thing.
4450 * The implementation of some type tests, especially for CONDITION
4451 types, is now tidier and maybe faster, due to CMU CL code
4452 originally by Douglas Crosher, ported by Martin Atzmueller.
4453 * Some math functions have been fixed, and there are new
4454 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4455 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4456 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4457 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4458 likely to be built into sbcl-0.7.0.)
4459 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4460 CL, ported to SBCL by Martin Atzmueller)
4461 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4462 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4463 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4464 * There's a new slam.sh hack to shorten the edit/compile/debug
4465 cycle for low-level changes to SBCL itself, and a new
4466 :SB-AFTER-XC-CORE target feature to control the generation of
4467 the after-xc.core file needed by slam.sh.
4468 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4469 COMPILE-FILE is no longer supported, so that now every function
4470 gets an entry point, so that block compilation looks a little
4471 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4472 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4473 returns the number of bytes consed since the system started,
4474 rather than the number consed since the first time the function
4475 was called. (The new definition parallels ANSI functions like
4476 CL:GET-INTERNAL-RUN-TIME.)
4477 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4478 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4479 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4480 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4481 * Fasl file version numbers are now independent of the target CPU,
4482 since historically most system changes which required version
4483 number changes have affected all CPUs equally. Similarly,
4484 the byte fasl file version is now equal to the ordinary
4487 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4488 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4489 is no longer recognized. I apologize for this, because it was
4490 listed in SB-EXT as a supported extension, but I found that
4491 its existing behavior was poorly specified, as well as incorrectly
4492 specified, and it looked like too much of a mess to straighten it
4493 out. I have enough on my hands trying to get ANSI stuff to work..
4494 * many patches ported from CMU CL by Martin Atzmueller, with
4495 half a dozen bug fixes in pretty-printing and the debugger, and
4496 half a dozen others elsewhere
4497 * fixed bug 13: Floating point infinities are now supported again.
4498 They might still be a little bit flaky, but thanks to bug reports
4499 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4500 as flaky as they were.
4501 * The --noprogrammer command line option is now supported. (Its
4502 behavior is slightly different in detail from what the old man
4503 page claimed it would do, but it's still appropriate under the
4504 same circumstances that the man page talks about.)
4505 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4506 are now supported, and enabled by default. Thus, the compiler can
4507 handle many floating point and complex operations much less
4508 inefficiently. (Thus e.g. you can implement a complex FFT
4510 * The compiler now detects type mismatches between DECLAIM FTYPE
4511 and DEFUN better, and implements CHECK-TYPE more correctly, and
4512 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4513 thanks to patches from Martin Atzmueller.
4514 * various fixes to make the cross-compiler more portable to
4515 ANSI-conforming-but-different cross-compilation hosts (notably
4516 Lispworks for Windows, following bug reports from Arthur Lemmens)
4517 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4518 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4519 fixed thanks to Pierre Mai's CMU CL patches.
4520 * fixes to keep the system from overflowing internal counters when
4521 it tries to use i/o buffers larger than 16M bytes
4522 * fixed bug 45a: Various internal functions required to support
4523 complex special functions have been merged from CMU CL sources.
4524 (When I was first setting up SBCL, I misunderstood a compile-time
4525 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4526 * improved support for type intersection and union, fixing bug 12
4527 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4528 more obscure bugs as well
4529 * some steps toward byte-compiling non-performance-critical
4530 parts of the system, courtesy of patches from Martin Atzmueller
4531 * Christophe Rhodes has made some debian packages of sbcl at
4532 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4533 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4534 stable, but are nonetheless usable. When he's ready, I'd be happy
4535 to add them to the SourceForge "File Releases" section. (And if
4536 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4537 * new fasl file format version number (because of changes in
4538 internal representation of (OR ..) types to accommodate the new
4539 support for (AND ..) types, among other things)
4541 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4542 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4544 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4546 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4547 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4548 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4549 * DESCRIBE now works on structure objects again.
4550 * Most function call argument type mismatches are now handled as
4551 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4552 know whether the function will be redefined before the call is
4553 executed. (The compiler could flag local calls with full WARNINGs,
4554 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4555 it doesn't keep track of enough information to know whether calls
4556 are local in this sense.)
4557 * Compiler output is now more verbose, with messages truncated
4558 later than before. (There should be some supported way for users
4559 to override the default verbosity, but I haven't decided how to
4560 provide it yet, so this behavior is still controlled by the internal
4561 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4562 src/compiler/ir1util.lisp.)
4563 * Fasl file format version numbers have increased again, because
4564 support for the Gray streams extension changes the layout of the
4565 system's STREAM objects.
4566 * The Gray subclassable streams extension now works, thanks to a
4567 patch from Martin Atzmueller.
4568 * The full LOAD-FOREIGN extension (not just the primitive
4569 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4570 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4571 but like most other programs, it defaults to copying the Unix
4572 environment from the original process instead of starting the
4573 new process in an empty environment.
4574 * Extensions which manipulate the Unix environment now support
4575 an :ENVIRONMENT keyword option which doesn't smash case or
4576 do other bad things. The CMU-CL-style :ENV option is retained
4577 for porting convenience.
4578 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4579 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4581 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4583 * A patch from Martin Atzmueller seems to have solved the SIGINT
4584 problem, and as far as we know, signal-handling now works cleanly.
4585 (If you find any new bugs, please report them!)
4586 * The system no longer defaults Lisp source file names to types
4587 ".l", ".cl", or ".lsp", but only to ".lisp".
4588 * The compiler no longer uses special default file extensions for
4589 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4590 seems to expect a single default extension for all compiled code,
4591 and there's no compelling reason to try to stretch the standard
4592 to allow two different extensions.) Instead, byte-compiled files
4593 default to the same extension as native-compiled files.
4594 * Fasl file format version numbers have increased again, because
4595 a rearrangement of internal implementation packages made some
4596 dumped symbols in old fasl files unreadable in new cores.
4597 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4598 many fewer weird special cases.
4599 * Bug #17 (differing COMPILE-FILE behavior between logical and
4600 physical pathnames) has been fixed, and some related misbehavior too,
4601 thanks to a patch from Martin Atzmueller.
4602 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4603 by Tim Moore, ported to SBCL by Martin Atzmueller.
4604 * Martin Atzmueller fixed several filesystem-related problems,
4605 including bug #36, in part by porting CMU CL patches, which were
4606 written in part by Paul Werkowski.
4607 * More compiler warnings in src/runtime/ are gone, thanks to
4608 more patches from Martin Atzmueller.
4609 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4612 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4614 * DESCRIBE now works on CONDITION objects.
4615 * The debugger now handles errors which arise when trying to print
4616 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4618 * The build system now uses an additional file, customize-target-features.lisp,
4619 to allow local modifications to the target *FEATURES* list. (The point of
4620 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4621 debugging features enabled, without having to worry about propagating it
4622 into everyone's system when I do a "cvs update".) When no
4623 customize-target-features.lisp file exists, the target *FEATURES* list
4624 should be constructed the same way as before.
4625 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4626 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4627 warn about behavior which is undefined under the ANSI spec. Note: This
4628 is specified by ANSI, but it's not very popular with programmers.
4629 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4630 macro in the SBCL sources for an example of a workaround which you
4631 might use to make portable ANSI-standard code which does what you want.
4632 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4633 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4634 when it's used as a non-toplevel form. (This is required in order
4635 to implement the DEFCONSTANT-EQX macro.)
4636 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4637 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4638 funny things, due to bugs in the implementation of EVAL-WHEN
4639 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4640 non-toplevel DEFCONSTANTs are uncommon.)
4641 * The core file version number and fasl file version number have been
4642 incremented, because the old noncompliant DEFCONSTANT behavior involved
4643 calling functions which no longer exist, and because I also took the
4644 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4645 * fixed bug 1 (error handling before read-eval-print loop starts), and
4646 redid debugger restarts and related debugger commands somewhat while
4648 ** The QUIT debugger command is gone, since it did something
4649 rather different than the SB-EXT:QUIT command, and since it never
4650 worked properly outside the main toplevel read/eval/print loop.
4651 Invoking the new TOPLEVEL restart provides the same functionality.
4652 ** The GO debugger command is also gone, since you can just invoke
4653 the CONTINUE restart directly instead.
4654 ** The TOP debugger command is also gone, since it's redundant with the
4655 FRAME 0 command, and since it interfered with abbreviations for the
4657 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4659 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4660 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4661 some porting work by Martin Atzmueller)
4662 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4663 with a boatload of patches which he ported to SBCL. Now that those
4665 ** The system tries to make sure that its low-priority messages
4666 are prefixed by semicolons, to help people who like to use
4667 syntax highlighting in their ILISP buffer. (This patch
4668 was originally due to Raymond Toy.)
4669 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4670 patches originally written by Raymond Toy.
4671 ** The compiler understands coercion between single-value and
4672 multiple-VALUES type expressions better, getting rid of some very
4673 weird behavior, thanks to patches originally by Robert MacLachlan
4674 and Douglas Crosher.
4675 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4676 lambda lists, thanks to a patch originally by Pierre Mai.
4677 ** The system no longer bogusly warns about "abbreviated type
4679 ** The compiler gets less confused by inlining and RETURN-FROM,
4680 thanks to some patches originally by Tim Moore.
4681 ** The system no longer hangs when dumping circular lists to fasl
4682 files, thanks to a patch originally from Douglas Crosher.
4683 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4684 undefined function error.
4685 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4686 in structure slot initforms) for now, documented workaround instead:-|
4687 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4688 * fixed bug 5: added stubs for various Gray stream functions called
4689 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4690 installed, at least appropriate type errors are generated
4691 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4692 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4693 consistently in DEFMETHOD forms.
4694 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4695 it doesn't seem to affect SBCL after all
4696 * The C runtime system now builds with better optimization and many
4697 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4699 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4701 * The system is now under CVS at SourceForge (instead of the
4702 CVS repository on my home machine).
4703 * The new signal handling code has been tweaked to treat register
4704 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4705 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4706 downstream, e.g. in debug-int.lisp, has implicit dependencies
4707 on the unsignedness of integer representation of machine words,
4708 and that caused the system to bomb out with infinite regress
4709 when trying to recover from type errors involving signed values,
4710 e.g. (BUTLAST '(1 2 3) -1).)
4711 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4712 (This was one of the bugs Peter Van Eynde reported back in July.)
4713 * The system now uses code inspired by Colin Walters' O(N)
4714 implementation of MAP (from the cmucl-imp@cons.org mailing
4715 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4716 inline the MAP operation, and there is more than one
4717 sequence argument to the MAP call (so that it can't just
4718 do ETYPECASE once and for all based on the type of the
4719 single sequence argument). (The old non-inline implementation
4720 of the general M-argument sequence-of-length-N case required
4721 O(M*N*N) time when any of the sequence arguments were LISTs.)
4722 * The QUIT :UNIX-CODE keyword argument has been renamed to
4723 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4724 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4726 * Raymond Wiker's patches to port dynamic loading from Linux to
4727 FreeBSD have been added.
4728 * The BUGS file is now more nearly up to date, thanks in large part
4729 to Martin Atzmueller's review of it.
4730 * The debugger now flushes standard output streams before it begins
4731 its output ("debugger invoked" and so forth).
4732 * The core version number and fasl file version number have both
4733 been incremented, because of incompatible changes in the layout
4735 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4736 used to not be called for a saved Lisp image.)
4737 * Martin Atzmueller's version of a patch to fix a compiler crash,
4738 as posted on sbcl-devel 13 September 2000, has been installed.
4739 * Instead of installing Martin Atzmueller's patch for the
4740 compiler transform for SUBSEQ, I deleted the compiler transform,
4741 and transforms for some similar consing operations.
4742 * A bug in signal handling which kept TRACE from working on OpenBSD
4744 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4745 away by constant folding
4746 * The system now defines its address space constants in one place
4747 (in the Lisp sources), and propagates them automatically elsewhere
4748 (through GENESIS and the sbcl.h file). Therefore, patching the
4749 address map is less unnecessarily tedious and error-prone. The
4750 Lisp names of address space constants have also been systematized.
4751 * CVS tags like dollar-Header-dollar have been removed from
4752 the sources, because they have never saved me trouble and
4753 they've been source of trouble working with patches and other
4754 diff-related operations.
4755 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4756 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4758 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4760 * The system has been ported to OpenBSD.
4761 * The system now compiles with a simple "sh make.sh" on the systems
4762 that it's supported on. I.e., now you no longer need to tweak
4763 text in the target-features.lisp-expr and symlinks in src/runtime/
4764 by hand, the make.sh takes care of it for you.
4765 * The system is no longer so grossly inefficient when compiling code
4766 involving vectors implemented as general (not simple) vectors (VECTOR T),
4767 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4768 which dares to use the various sequence functions on non-simple
4769 vectors, takes less of a performance hit.
4770 * There is now a primitive type predicate VECTOR-T-P
4771 to test for the (VECTOR T) type, so that e.g.
4772 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4773 can now be compiled with some semblance of efficiency. (The old code
4774 turned the type declaration into a full call to %TYPEP at runtime!)
4775 * AREF on (VECTOR T) is still not fast, since it's still compiled
4776 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4777 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4778 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4779 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4780 without making full calls to SUBTYPEP at runtime.
4781 (Some analogous efficiency issues for non-simple vectors specialized to
4782 element types other than T, or for non-simple multidimensional arrays,
4783 have not been addressed. They could almost certainly be handled the
4784 same way if anyone is motivated to do so.)
4785 * The changes in array handling break binary compatibility, so
4786 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4787 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4788 instead of (VALUES T T).
4789 * By following the instructions that Dan Barlow posted to sbcl-devel
4790 on 2 July 2000, I was able to enable primitive dynamic object
4791 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4792 functionality is not implemented (since it calls ld to resolve
4793 library references automatically, requiring RUN-PROGRAM for its
4794 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4795 try to resolve library references) is now supported.
4796 * The system now flushes the standard output streams when it terminates,
4797 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4798 them at several other probably-convenient times, e.g. in each pass of
4799 the toplevel read-eval-print loop, and after evaluating a form given
4800 as an "--eval" command-line option. (These changes were motivated by a
4801 discussion of stream flushing issues on cmucl-imp in August 2000.)
4802 * The source transform for TYPEP of array types no longer assumes
4803 that an array whose element type is a not-yet-defined type
4804 is implemented as an array of T, but instead punts, so that the
4805 type will be interpreted at runtime.
4806 * There is now some support for cross-compiling in make.sh: each of
4807 the phases of make.sh has its own script. (This should be transparent
4808 to people doing ordinary, non-cross-compile builds.)
4809 * Since my laptop doesn't have hundreds of megabytes of memory like
4810 my desktop machine, I became more motivated to do some items on
4811 my to-do list in order to reduce the size of the system a little:
4812 ** Arrange for various needed-only-at-cold-init things to be
4813 uninterned after cold init. To support this, those things have
4814 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4815 symbols with such names are now uninterned after cold init).
4816 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4817 fasl files for cold load.
4818 ** Remove the old compiler structure pooling code (which used to
4819 be conditional on the target feature :SB-ALLOC) completely.
4820 ** Redo the representation of some data in cold init to be more compact.
4821 (I also looked into supporting byte compiled code at bootstrap time,
4822 which would probably reduce the size of the system a lot, but that
4823 looked too complicated, so I punted for now.)
4824 * The maximum signal nesting depth in the src/runtime/ support code has
4825 been reduced from 4096 to 256. (I don't know any reason for the very
4826 large old value. If the new smaller value turns out to break something,
4827 I'll probably just bump it back up.)
4828 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4830 * Many, many bugs reported by Peter Van Eynde have been added to
4831 the BUGS list; some have even been fixed.
4832 * While enabling dynamic object file loading, I tried to make the
4833 code easier to understand, renaming various functions and variables
4834 with less ambiguous names, and changing some function calling
4835 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4836 * While trying to figure out how to do the OpenBSD port, I tried to
4837 clean up some of the code in src/runtime/. In particular, I dropped
4838 support for non-POSIX signal handling, added various comments,
4839 tweaked the code to reduce the number of compilation warnings, and
4840 renamed some files to increase consistency.
4841 * To support the new automatic configuration functionality in make.sh,
4842 the source file target-features.lisp-expr has been replaced with the
4843 source file base-target-features.lisp-expr and the machine-generated
4844 file local-target-features.lisp-expr.
4845 * fixed a stupid quoting error in make.sh so that using CMU CL
4846 "lisp -batch" as cross-compilation host works again
4848 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4850 * DESCRIBE no longer tries to call itself recursively to describe
4851 bound/fbound values, so that it no longer fails on symbols which are
4852 bound to themselves (like keywords, T, and NIL).
4853 * DESCRIBE now works on generic functions.
4854 * The printer now prints less-screwed-up representations of closures
4855 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4856 * A private symbol is used instead of the :EMPTY keyword previously
4857 used to mark empty slots in hash tables. Thus
4858 (DEFVAR *HT* (MAKE-HASH-TABLE))
4859 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4860 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4861 now does what ANSI says that it should. (You can still get
4862 similar noncompliant behavior if bang on the hash table
4863 implementation with all the symbols you get back from
4864 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4865 This breaks binary compatibility, since tests for equality to
4866 :EMPTY are wired into things like the macroexpansion of
4867 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4869 * There's now a minimal placeholder implementation for CL:STEP,
4870 as required by ANSI.
4871 * An obscure bug in the interaction of the normal compiler, the byte
4872 compiler, inlining, and structure predicates has been patched
4873 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4874 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4876 * Missing ordinary arguments in a macro call are now detected even
4877 when the macro lambda list contains &KEY or &REST.
4878 * The debugger no longer complains about encountering the top of the
4879 stack when you type "FRAME 0" to explicitly instruct it to go to
4880 the top of the stack. And it now prints the frame you request even
4881 if it's the current frame (instead of saying "You are here.").
4882 * As specified by ANSI, the system now always prints keywords
4883 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4885 * The default initial SIZE of HASH-TABLEs is now smaller.
4886 * Type information from CLOS class dispatch is now propagated
4887 into DEFMETHOD bodies, so that e.g.
4888 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4890 is now basically equivalent to
4891 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4892 (DECLARE (TYPE SINGLE-FLOAT X))
4894 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4895 operation, without having to do run-time type dispatch.
4896 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4897 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4898 * Since I don't seem to be making big file reorganizations very often
4899 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4900 is overflowing my ability to conveniently back them up), I've finally
4901 checked the system into CVS. (The CVS repository is on my home system,
4902 not at SourceForge -- putting it on SourceForge might come later.)
4903 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4904 high-level GC-NOTIFY-FOO functions send their output. (There's
4905 still very little control of where low-level verbose GC functions
4906 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4907 less than it used to -- the GC-NOTIFY-FOO functions are now under
4908 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4909 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4910 in only one place in the source code, and propagates it automatically
4911 everywhere that it's needed. Thus e.g. when I bump the version from
4912 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4913 * The C source files now include boilerplate legalese and documentation
4914 at the head of each file (just as the Lisp source files already did).
4915 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4916 to his page will be replaced with a link to his new CLiki service.
4918 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4920 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4921 * The build process now looks for GNU make under the default name "gmake",
4922 instead of "make" as it used to. If GNU make is not available as "gmake"
4923 on your system, you can change this default behavior by setting the
4924 GNUMAKE environment variable.
4925 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4926 can build without error under CMU CL.
4928 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4930 * There is now a partial SBCL user manual (with some new text and some
4931 text cribbed from the CMU CL manual).
4932 * The beginnings of a profiler have been added (starting with the
4933 CMU CL profiler and simplifying and cleaning up). Eventually the
4934 main interface should be through the TRACE macro, but for now,
4935 it's still accessed through vaguely CMU-CL-style functions and macros
4936 exported from the package SB-PROFILE.
4937 * Some problems left over from porting CMU CL to the new
4938 cross-compilation bootstrap process have been cleaned up:
4939 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4940 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4941 part when getting rid of the compiler *BACKEND* stuff.)
4942 ** The value of *NULL-TYPE* was screwed up, because it was
4943 being initialized before the type system knew the final
4944 definition of the 'NULL type. This screwed up several key
4945 optimizations in the compiler, causing inefficiency in all sorts
4946 of places. (I found it because I wanted to understand why
4947 GET-INTERNAL-RUN-TIME was consing.)
4948 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4949 PROCLAIM FTYPE information. Unfortunately this broke binary
4950 compatibility again, since now the forms output by DEFGENERIC
4951 to refer to functions which didn't exist in 0.6.3.
4952 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4953 can use the new (as of 0.6.3) transform for SOME into MAP into
4955 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4956 values to (INTEGER 0 1000000), so that the time code will no longer
4957 occasionally get blown up by Linux returning 1000000 microseconds
4958 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4959 its output conform to the ANSI spec. (Alas, this makes its output
4960 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4961 * A full call to MAP NIL with a single sequence argument no longer conses.
4962 * fixes to problems pointed out by Martin Atzmueller:
4963 * The manual page no longer talks about multiprocessing as though
4964 it were currently supported.
4965 * The ILISP support patches have been removed from the distribution,
4966 because as of version 5.10.1, ILISP now supports SBCL without us
4967 having to maintain patches.
4968 * added a modified version of Raymond Toy's recent CMU CL patch for
4969 EQUALP comparison of HASH-TABLE
4971 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4973 * The system still can't cross-compile itself with
4974 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4975 entails), but at least it can compile more of itself that way
4976 than it used to be able to, and various buglets which were uncovered
4977 by trying to cross-compile itself that way have now been fixed.
4978 * This release breaks binary compatibility again. This time
4979 at least I've incremented the FASL file format version to 2, so that the
4980 problem can be detected reliably instead of just causing weird errors.
4981 * various new style warnings:
4982 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4983 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4984 ** using the lexical binding of a variable named in the *FOO* style
4985 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4986 as specified by ANSI.
4987 * *RANDOM-STATE* is no longer automatically initialized from
4988 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4989 default behavior of the system is to repeat its behavior every time
4990 it's run. If you'd like to change this behavior, you can always
4991 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4992 old convention there was no comparably easy way to get the system to
4993 repeat its behavior every time it was run.
4994 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4995 FTYPE declarations has been removed, in favor of their ANSI
4996 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4997 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4998 the types of their sequence arguments can be determined at compile time.
4999 This is done through a new open code expansion for MAP which eliminates
5000 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5001 argument types can be determined at compile time.
5002 * The optimizer now transforms COERCE into an identity operation when it
5003 can prove that the coerced object is already of the correct type. (This
5004 can be a win for machine generated code, including the output of other
5005 optimization transforms, such as the MAP transform above.)
5006 * Credit information has been moved from source file headers into CREDITS.
5007 * Source file headers have been made more standard.
5008 * The CASE macro now compiles without complaining even when it has
5011 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5013 * (Note that the way that the PCL macroexpansions were rewritten
5014 to accommodate the change in DEFGENERIC below breaks binary
5015 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5016 not run under sbcl-0.6.2. Once we get out of alpha releases,
5017 i.e. hit release 1.0.0, we'll probably try to maintain binary
5018 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5019 and sbcl-1.4.4. Until then, however, it might be fairly common
5020 for maintenance releases to break binary compatibility.)
5021 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5023 * The reporting of unhandled signals has been changed to print some
5024 explanatory text as well as the report form. (Previously only
5025 the report form was printed.)
5026 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5027 it defines, so that the compiler no longer issues undefined function
5028 warnings for compiled-but-not-yet-loaded generic functions.
5029 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5030 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5031 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5032 section of the ANSI spec are supported.
5033 * The "" nickname for the "KEYWORD" package has been removed.
5034 The reader still handles symbol tokens which begin with a package marker
5035 as keywords, but it doesn't expose its mechanism for doing so in the
5036 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5037 * The system now issues STYLE-WARNINGs for contradictory TYPE
5038 proclamations. (Warnings for contradictory FTYPE proclamations would
5039 be nice too, but those can't be done usefully unless the type system
5040 is made smarter about FUNCTION types.)
5041 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5042 systematized, so that "*target-*.lisp is supposed to exist only on the
5043 target and imply that there's a related file which exists on the
5044 host, and *host-*.lisp is supposed to exist only on the host and imply
5045 that there's a related file which exists on the target. This involves a
5046 lot of renaming. Hopefully the acute confusion caused by the renaming
5047 will be justified by the reduction in chronic confusion..
5048 ** runtime-type.lisp -> early-target-type.lisp
5049 ** target-type.lisp -> late-target-type.lisp
5050 ** early-host-format.lisp -> early-format.lisp
5051 ** late-host-format.lisp -> late-format.lisp
5052 ** host-error.lisp -> misc-error.lisp
5053 ** early-error.lisp -> early-target-error.lisp
5054 ** late-error.lisp -> late-target-error.lisp
5055 ** host-defboot.lisp -> early-defboot.lisp
5056 ** code/misc.lisp -> code/target-misc.lisp
5057 ** code/host-misc.lisp -> code/misc.lisp
5058 ** code/numbers.lisp -> code/target-numbers.lisp
5059 ** code/early-numbers.lisp -> numbers.lisp
5060 ** early-host-type.lisp -> early-type.lisp
5061 ** late-host-type.lisp -> late-type.lisp
5062 ** host-typep.lisp -> typep.lisp
5063 ** load.lisp -> target-load.lisp
5064 ** host-load.lisp -> load.lisp
5065 ** host-disassem.lisp -> disassem.lisp
5066 ** host-insts.lisp -> insts.lisp
5067 ** byte-comp.lisp -> target-byte-comp.lisp
5068 ** host-byte-comp.lisp -> byte-comp.lisp
5069 ** host-signal.lisp -> signal.lisp
5070 ** host-defstruct.lisp -> defstruct.lisp
5071 ** late-target-type.lisp -> deftypes-for-target.lisp
5072 Furthermore, several other previously target-only files foo.lisp (e.g.
5073 hash-table.lisp and random.lisp) have been split into a target-and-host
5074 foo.lisp file and a target-only target-foo.lisp file, with their key type
5075 definitions in the target-and-host part, so that the cross-compiler will
5076 know more about target types.
5077 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5078 gone away. In their place are various *BACKEND-FOO* variables
5079 corresponding to the slots of the old structure.
5080 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5081 into the target SBCL has been fixed.
5082 * The chill.lisp system for loading cold code into a running SBCL
5084 * Support for the CMU CL "scavenger hook" extension has been removed.
5085 (It was undocumented and unused in the CMU CL sources that SBCL was
5086 derived from, and stale in sbcl-0.6.1.)
5087 * Various errors in the cross-compiler type system were detected
5088 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5089 (enabling various consistency checks). Many of them were fixed,
5090 but some hard problems remain, so the compiler is back to
5091 running without *TYPE-SYSTEM-INITIALIZED* for now.
5092 * As part of the cross-compiler type system cleanup, I implemented
5093 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5094 * I have started adding UNCROSS calls throughout the type system
5095 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5096 on cross-compiler input files will be able to go away, and various
5098 * CONSTANTP now returns true for quoted forms (as explicitly required
5101 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5103 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5104 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5105 (MAKE-LIST -1). In the longer term, it ought to become true
5106 that declarations are assertions even at SAFETY 1. For now, it's not
5107 quite true even at SAFETY 3, but it's at least more nearly true..
5108 (Note that this change seems to increases the size of the system by
5109 O(5%) and to decrease the speed of the compiler by 20% or more.)
5110 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5111 for the problem of printing dozens of lines of distracting information
5112 about low-level system machinery as part of the top stack frame
5113 on entry to the debugger when an undefined function was called.
5114 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5115 is not reset to COMMON-LISP-USER.
5116 * Compilation of stuff related to dyncount.lisp has been made conditional
5117 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5118 smaller. The various dyncount-related symbols have been moved into
5119 a new "SB-DYNCOUNT" package.
5120 * tty-inspect.lisp has been renamed to inspect.lisp.
5121 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5122 feature has gone away. (When we eventually port to other flavors of
5123 libc and/or Unix, we'll try to make the differences between flavors
5124 invisible at the user level.)
5125 * Various other *FEATURES* tags, and/or their associated conditionals,
5126 have been removed if obsolescent, or given better documentation, or
5127 sometimes given more-mnemonic names.
5129 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5131 * tidied up "make.sh" script
5132 * tidied up system directory structure
5133 * better "clean.sh" behavior
5134 * added doc/FOR-CMUCL-DEVELOPERS
5135 * many many small tweaks to output format, e.g. removing possibly-confusing
5136 trailing #\. character in DESCRIBE-INSTANCE
5137 * (EQUALP #\A 'A) no longer signals an error.
5138 * new hashing code, including EQUALP hashing
5139 * tidied up Lisp initialization and toplevel
5140 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5141 * command line argument processing
5142 * added POSIX-GETENV function to deal with Unix-ish environment variables
5143 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5144 terminating SBCL on EOF
5145 * non-verbose GC by default
5146 * There is no more "sbcl" shell script; the sbcl file is now the C
5147 runtime executable (just like CMU CL).
5148 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5150 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5151 symbol and package information as Lisp native symbol and package objects
5152 instead of strings naming symbols and strings naming packages. This way,
5153 whenever packages are renamed (as in warm init), debug information is
5154 transformed along with everything else.
5155 * tweaked the optimization policy declarations which control the building
5156 of SBCL itself. Now, among other things, the system no longer saves
5157 source location debugging information. (This helps two problems at once
5158 by reducing SBCL size and by keeping SBCL from trying to look for its
5159 sources -- which may not exist -- when reporting errors.)
5160 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5161 debugging and testing purposes
5162 * cleaned up printing, making the printer call PRINT-OBJECT for
5163 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5164 methods, giving nearly-ANSI behavior
5165 * converted almost all special variables to use *FOO* naming convention
5166 * deleted PARSE-TIME functionality, since it can be done portably
5167 * moved some files out of cold init into warm init
5168 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5170 * regularized formatting of source files
5171 * added an install.sh script
5172 * fixed ridiculous memory usage of cross-compiler by making
5173 compiler/alloc.lisp not try to do pooling unless it can hook
5174 itself into the GC of the cross-compilation host. Now the system
5175 builds nicely on my old laptop.
5176 * added :SB-ALLOC in target-features.lisp-expr
5177 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5178 was not implemented)
5179 * re-did condition handling and note reporting in the compiler. Notes
5180 are no longer handled by signalling conditions. Style warnings
5181 and warnings are handled more correctly and reported in such a way
5182 that it's easy to find one or the other in your output (so that you
5183 can e.g. figure out which of many problems caused COMPILE-FILE to
5185 * changed the severity of several compiler warnings from full WARNING
5186 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5187 compiler note reporting so that it doesn't use the condition system
5188 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5189 COMPILE-FILE command)
5190 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5191 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5192 no longer supported, since their implementation was deeply intertwingled
5193 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5194 * removed bogus "support" for compiler macros named (SETF FOO), and
5195 removed the compiler macro for SETF INFO (but only after making a fool
5196 of myself on the cmucl-imp mailing list by posting a bogus patch for
5197 DEFINE-COMPILER-MACRO..)
5198 * Compiled files containing forms which have side effects on the Lisp
5199 reader (such as DEFPACKAGE forms) are now handled more correctly.
5200 (Compiler queuing of top level lambdas has been suppressed by setting
5201 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5202 * deleted various currently-unused source files, e.g. gengc.lisp. They
5203 may be added back at some point e.g. when porting to other architectures,
5204 but until they are it's distracting to distribute them and to try to
5206 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5207 there were so many of them they're just distractions, and UNCROSS is
5208 known to be able to handle the current sources
5209 * moved PROFILE functionality into TRACE, so that it will be clear
5210 how the wrapping and unwrapping of functions when you profile them
5211 interacts with the wrapping and unwrapping of functions when you
5212 trace them. (Actually, the functionality isn't there yet, but at least
5213 the interface specification is there. Hopefully, the functionality will
5214 arrive with some future maintenance release.)
5215 * removed host-oops.lisp
5216 * changed signature of QUIT function to allow UNIX-CODE argument
5217 * fixed READ-SEQUENCE bug
5218 * tweaked verbose GC output so that it looks more like the progress
5219 output that ANSI specifies for functions like LOAD
5220 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5221 * added <http://sbcl.sourceforge.com> to the banner information printed by